Heat exchange piece, battery and electric equipment

Abstract

The invention discloses a heat exchange part, a battery and electric equipment. The heat exchange part comprises a first heat exchange runner, and the first heat exchange runner comprises a first heat exchange section and a second heat exchange section; the second heat exchange section is arranged in a bent mode, and the first heat exchange section is arranged in an area defined by the second heat exchange section in a bent mode and connected with the second heat exchange section in a bent mode. Wherein the second heat exchange section is configured to be opposite to and in heat exchange fit with part of the battery monomers, located on the peripheral side, of the battery assembly, and the first heat exchange section is configured to be opposite to and in heat exchange fit with the corresponding battery monomers in an area defined by the second heat exchange section. According to the heat exchange piece, the second heat exchange section is bent, and the first heat exchange section is bent in the area defined by the second heat exchange section, so that when the heat exchange piece exchanges heat with the battery assembly, the second heat exchange section is opposite to part of the battery monomers, located on the peripheral side, of the battery assembly; the corresponding battery monomers in the area defined by the first heat exchange section and the second heat exchange section are opposite, so that the heat exchange piece can compensate for the internal and external temperature difference caused by heat exchange between the peripheral battery monomers and the environment, the heat exchange effects of the battery monomers on the periphery of the battery assembly and the battery monomers in the battery assembly tend to be consistent, the temperature uniformity of the battery is improved, and the service life of the battery assembly is prolonged. Therefore, the service life of the battery can be prolonged to a certain extent.

Description

[0001] This case is a divisional application of Chinese patent application number 202410171636.6, application date 2024-02-06, and invention name “Heat exchange components, batteries and electrical equipment”. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a heat exchange component, a battery and an electrical device. Background Art

[0003] In the prior art, in order to ensure the normal operation and service life of the battery, a heat exchanger is usually provided in the battery, which can exchange heat with the battery cells to adjust the temperature of each battery cell, thereby ensuring the battery life. However, at present, there are a large number of battery cells in the battery pack, and the temperature uniformity of each battery cell under the heat exchange of the heat exchanger needs to be further improved.

[0004] Application Contents

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a heat exchange component, and a battery and an electrical device including the heat exchange component, which can compensate for the internal and external temperature difference caused by the heat exchange between the peripheral battery cells and the environment, so that the heat exchange effect of the battery cells outside the battery assembly and the battery cells inside the battery assembly tends to be consistent, thereby improving the temperature uniformity of the battery and increasing the service life of the battery.

[0006] In a first aspect, an embodiment of the present application provides a heat exchange component for a battery, wherein the battery comprises a battery assembly, and the battery assembly comprises a plurality of battery cells, and is characterized in that the heat exchange component comprises a first heat exchange channel, and the first heat exchange channel comprises a first heat exchange section and a second heat exchange section; the second heat exchange section is bent, and the first heat exchange section is bent within an area surrounded by the second heat exchange section and is bent and connected to the second heat exchange section; wherein the second heat exchange section is configured to be opposite to and heat-exchange cooperative with part of the battery cells located on the peripheral side of the battery assembly, and the first heat exchange section is configured to be opposite to and heat-exchange cooperative with the corresponding battery cells within the area surrounded by the second heat exchange section.

[0007] The present application bends the second heat exchange section and bends the first heat exchange section within the area enclosed by the second heat exchange section. When the heat exchange component exchanges heat with the battery assembly, the outer second heat exchange section can be opposite to the outer battery cells of the battery, and the first heat exchange section can be opposite to the internal battery cells. This allows the heat exchange component to compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cells and the environment, so that the heat exchange effect of the battery cells outside the battery assembly and the battery cells inside the battery assembly are consistent, thereby improving the temperature uniformity of the battery, thereby improving the service life of the battery to a certain extent, thereby improving the overall performance of the battery.

[0008] In some embodiments, the second heat exchange section includes: a first flow channel portion and a second flow channel portion, the first flow channel portion extends along a first direction and has two ends respectively connected to the first heat exchange section and the second flow channel portion, the second flow channel portion extends along a second direction, and the first direction intersects with the second direction, wherein at least one of the first flow channel portion and the second flow channel portion is configured to be opposite to the battery cell and cooperate in heat exchange.

[0009] In this embodiment, the second heat exchange section is configured to include a first flow channel portion and a second flow channel portion. At least one of the first flow channel portion and the second flow channel portion is opposite to the battery cell and cooperates in heat exchange. The structure is simple, and the second heat exchange section can be arranged as needed while meeting the heat exchange needs of the battery assembly, making the arrangement of the second heat exchange section more flexible and making it more convenient to assemble and arrange the heat exchange components in the battery.

[0010] In one embodiment, the first flow channel portion is configured to be opposite to the battery cell and to cooperate with the battery cell in heat exchange, and the second flow channel portion is configured to be arranged outside the battery assembly.

[0011] In this embodiment, the first flow channel portion is set to be opposite to the battery cell and cooperate with the heat exchange, and can cooperate with the first heat exchange section to perform heat exchange operations from the peripheral battery cells of the battery to the middle battery cells in the second direction, thereby better meeting the need to improve the temperature uniformity of heat exchange of the battery. The second flow channel portion is arranged on the outside of the battery assembly, which makes it convenient to set up the second flow channel portion and arrange it inside the battery. The heat exchange fluid flowing in the second flow channel portion can be used for heat exchange of other components, thereby making the use range of the heat exchange component wider and the utilization more complete.

[0012] In some examples, the battery housing defines a battery compartment and an electrical compartment that are spaced apart from each other, and the second flow channel portion is configured to at least partially extend into the electrical compartment.

[0013] In this embodiment, at least part of the second flow channel portion extends into the electrical compartment, so that the electrical components in the electrical compartment can use the heat exchange element to perform heat exchange operations, so that the heat exchange element can simultaneously perform heat exchange on the battery cells and electrical components, making the use of the heat exchange element more extensive.

[0014] In one example, the second flow channel portion is configured to be opposite to and heat-exchangeably cooperate with a high-voltage box in the electrical compartment.

[0015] In this embodiment, the second flow channel portion is configured to be opposite to the high-pressure box and cooperate with the high-pressure box for heat exchange, so that the second flow channel portion can play a good heat exchange effect for the operation of the high-pressure box, thereby allowing the high-pressure box to operate more stably.

[0016] In some embodiments, the second heat exchange section is located at the outermost side of the first heat exchange channel in the circumferential direction.

[0017] In the above embodiment, by arranging the second heat exchange section at the outermost side of the circumference of the first heat exchange channel, the second heat exchange section can exchange heat on the outer circumference of the battery assembly, which is beneficial to improving the temperature difference of the battery assembly in different environments and improving the service life of the battery assembly to a certain extent.

[0018] In some embodiments, the first heat exchange section and the second heat exchange section are bent in the same plane.

[0019] In the above-mentioned embodiment, by setting the first heat exchange section and the second heat exchange section to bend in the same plane, the first heat exchange channel can exchange heat for the battery in the same plane. Therefore, the structure of the first heat exchange channel can be simplified, the production difficulty of the first heat exchange channel can be reduced, and at the same time, the space occupied by the first heat exchange channel can be reduced, thereby improving the volume energy density of the battery.

[0020] In some embodiments, the first heat exchange section includes a plurality of first heat exchange parts, and the plurality of first heat exchange parts are arranged at intervals and are connected in series by bending.

[0021] In the above-mentioned embodiment, on the one hand, by setting up a plurality of first heat exchange parts, the heat exchange area of ​​the first heat exchange section can be increased, and then the heat exchange area of ​​the first heat exchange channel can be increased, thereby improving the heat exchange effect of the first heat exchange channel; on the other hand, since the internal battery cells are wrapped by the external battery cells, the temperature difference between the internal battery cells is not large. Therefore, by setting up a plurality of first heat exchange parts, the overall heat exchange effect can be guaranteed while ensuring that the temperature difference between the internal and external battery cells is small.

[0022] In some embodiments, a plurality of first heat exchange portions are arranged at intervals along the first direction, each first heat exchange portion extends linearly along the second direction, and the first direction and the second direction are arranged at an angle.

[0023] In the above-mentioned embodiment, by setting the first heat exchange part to extend in a straight line along the second direction, the difficulty of producing and manufacturing the first heat exchange part can be reduced, thereby reducing the production complexity of the first heat exchange channel and reducing the production cost. At the same time, the straight tube can also increase the flow rate of the heat exchange fluid, thereby improving the heat exchange effect of the first heat exchange channel; in addition, multiple first heat exchange parts are arranged in parallel, which can also save occupied space, facilitate the miniaturization of the heat exchange component structure, and help ensure the volume energy density of the battery.

[0024] In some embodiments, the first heat exchange section further includes: a first bending portion, which is arc-shaped and bent and connected between two adjacent first heat exchange portions.

[0025] In the above-mentioned embodiment, by setting the first bending portion, the fluid flow direction inside the first heat exchange section can be changed, and a smooth transition between the two first heat exchange portions can be achieved, thereby realizing a circuitous extension of the first heat exchange channel. As a result, the contact area between a single battery cell and the first heat exchange channel can be increased, thereby increasing the heat exchange area and improving the heat exchange efficiency of the first heat exchange channel; at the same time, the first bending portion is arc-shaped, which can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the fluid and further increasing the heat exchange efficiency of the first heat exchange section; in addition, the bending setting makes the entire heat exchange component structure compact and reliable, which can be adapted to the battery cell arrangement of the battery and improve the volume energy density of the battery cell.

[0026] In some embodiments, the second heat exchange section is bent to form a U-shaped area, and the first heat exchange section is bent and disposed in the U-shaped area.

[0027] In some embodiments, the second heat exchange section includes: a second heat exchange part, a third heat exchange part and a fourth heat exchange part, the second heat exchange part extends along the first side circumference of the first heat exchange section, the third heat exchange part is connected between the second heat exchange part and the first heat exchange section, and extends along the second side circumference of the first heat exchange section, the first end of the third heat exchange part is connected to the second heat exchange part at an angle, and the second end of the third heat exchange part is connected to the first heat exchange section at an angle; the fourth heat exchange part is connected to the second heat exchange part, is connected to the second heat exchange part at an angle, and extends along the third side circumference of the first heat exchange section.

[0028] In the above-mentioned embodiment, by arranging the second heat exchange part, the third heat exchange part and the fourth heat exchange part on three sides of the first heat exchange section respectively, the second heat exchange section can surround the first heat exchange section, thereby increasing the compactness of the arrangement of the first heat exchange channel, realizing the miniaturization of the structure of the first heat exchange channel, which is beneficial to improving the volume energy density of the battery. At the same time, the structure of the first heat exchange channel can be simplified to facilitate the processing and production of the heat exchange components.

[0029] In some embodiments, the first heat exchange section includes a plurality of first heat exchange parts, and the plurality of first heat exchange parts are bent and connected in sequence in the first direction; wherein the second heat exchange part is located on one side of the plurality of first heat exchange parts along the first direction, and the third heat exchange part is located on one side of the plurality of first heat exchange parts along the second direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange part is connected to one end of the second heat exchange part along the second direction, and a second end of the third heat exchange part is connected to one of the plurality of first heat exchange parts farthest from the second heat exchange part along the first direction, and a fourth heat exchange part is located on the other side of the plurality of first heat exchange parts along the second direction, and one end of the fourth heat exchange part is connected to one end of the second heat exchange part away from the third heat exchange part, and the other end of the fourth heat exchange part extends along the first direction toward a direction away from the second heat exchange part; or,

[0030] The second heat exchange part is located on one side of the multiple first heat exchange parts along the second direction, the third heat exchange part is located on one side of the multiple first heat exchange parts along the first direction, and the first direction and the second direction are arranged at an angle; the first end of the third heat exchange part is connected to one end of the second heat exchange part along the first direction, the second end of the third heat exchange part is connected to one of the multiple first heat exchange parts that is closest to the third heat exchange part along the first direction, the fourth heat exchange part is located on the other side of the multiple first heat exchange parts along the first direction, one end of the fourth heat exchange part is connected to one end of the second heat exchange part away from the third heat exchange part, and the other end of the fourth heat exchange part extends along the second direction toward a direction away from the second heat exchange part.

[0031] In the above-mentioned embodiment, by setting a plurality of first heat exchange parts to be bent and connected in sequence in the first direction, the second heat exchange part is located on one side of the plurality of first heat exchange parts along the first direction, the third heat exchange part is located on one side of the plurality of first heat exchange parts along the second direction, and the fourth heat exchange part is located on the other side of the plurality of first heat exchange parts along the second direction, the positional relationship among the second heat exchange part, the third heat exchange part, the fourth heat exchange part and the first heat exchange part is defined, the layout of the first heat exchange flow channel is further defined, the structure of the first heat exchange flow channel is simplified, and it is easy to process and manufacture. By setting the second heat exchange part to be located on one side of the plurality of first heat exchange parts along the second direction, the third heat exchange part is located on one side of the plurality of first heat exchange parts along the first direction, and the fourth heat exchange part is located on the other side of the plurality of first heat exchange parts along the first direction, another layout of the first heat exchange flow channel is defined, thereby increasing the diversity of the first heat exchange flow channel, so that it can meet the heat exchange requirements of different batteries, simplifying the structure of the first heat exchange flow channel, and facilitating processing and manufacturing.

[0032] In some embodiments, the third heat exchange section and the fourth heat exchange section extend along the first direction, and the first heat exchange section and the second heat exchange section both extend along the second direction; or, the first heat exchange section, the third heat exchange section and the fourth heat exchange section all extend along the second direction, and the second heat exchange section extends along the first direction.

[0033] In the above-mentioned embodiment, by arranging the third heat exchange part and the fourth heat exchange part to extend along the first direction, the first heat exchange part and the second heat exchange part are both extended along the second direction, which can be beneficial to the circuitous arrangement of the first heat exchange channel, thereby reducing the difficulty of producing the first heat exchange channel and reducing the production cost of the heat exchange component.

[0034] By arranging the first heat exchange part, the third heat exchange part and the fourth heat exchange part to extend along the second direction, and the second heat exchange part to extend along the first direction, it can be beneficial to the circuitous arrangement of the first heat exchange channel, thereby reducing the production difficulty of the first heat exchange channel and reducing the production cost of the heat exchange component; at the same time, through such an arrangement, the structure of the first heat exchange channel is also made more compact and reliable.

[0035] In some embodiments, the third heat exchange section and the fourth heat exchange section are both extended along the first direction, and in the first direction, the length of the fourth heat exchange section is less than or equal to the length of the third heat exchange section; or the first heat exchange section and the third heat exchange section extend along the second direction, and the second heat exchange section extends along the first direction, and in the second direction, the length of the third heat exchange section is greater than or equal to the length of the first heat exchange section.

[0036] In the above-mentioned embodiment, by setting the length of the fourth heat exchange part equal to the length of the third heat exchange part in the first direction, the sizes of the two ends of the U-shaped area can be made close, which is beneficial to controlling the temperature difference of the battery cells at the two ends of the battery assembly in the second direction and improving the temperature uniformity of the battery assembly; by setting the length of the fourth heat exchange part less than the length of the third heat exchange part in the first direction, it is convenient to connect the fourth heat exchange part to the collector, and the fourth heat exchange part can also avoid other flow channel sections, other flow channel structures or other components of the first heat exchange channel.

[0037] In the above-mentioned embodiment, by setting the length of the third heat exchange part in the second direction to be greater than the length of the first heat exchange part, the first heat exchange section can be covered in the U-shaped area of ​​the second heat exchange section, the length of the third heat exchange part is increased, the heat exchange area of ​​the third heat exchange part is increased, and the second heat exchange section can enclose a larger U-shaped area, thereby improving the heat exchange effect of the heat exchange component; by setting the length of the third heat exchange part to be equal to the length of the first heat exchange part, the length dimensions of the third heat exchange part extending along the second direction of the first heat exchange channel and the multiple first heat exchange parts can be close, which is beneficial to controlling the temperature difference of the battery assembly along the first direction and improving the temperature uniformity of the battery assembly.

[0038] In some embodiments, the fourth heat exchange portion extends along the first direction and extends to a position close to one of the plurality of first heat exchange portions that is farthest from the second heat exchange portion.

[0039] In the above-mentioned embodiment, by setting the fourth heat exchange part to extend along the first direction and extend to a position close to one of the multiple first heat exchange parts that is farthest from the second heat exchange part, the heat exchange area of ​​the fourth heat exchange part can be increased, so that the first heat exchange channel can exchange heat with the multiple battery cells arranged corresponding to the first heat exchange channel as much as possible, thereby improving the comprehensiveness of heat exchange of the first heat exchange channel, and further improving the heat exchange effect of the battery.

[0040] In some embodiments, the second heat exchange section also includes: a second bending portion and a third bending portion, the second bending portion and the third bending portion are both arc-shaped, and the second bending portion is connected between the first end of the third heat exchange portion and the second heat exchange portion, and the third bending portion is connected between the second end of the third heat exchange portion and the first heat exchange portion.

[0041] In the above-mentioned embodiment, by setting the second bend and the third bend, the flow direction of the fluid in the first heat exchange channel can be changed, and the smooth transition between the third heat exchange section and the second heat exchange section can be realized, and the smooth transition between the third heat exchange section and the first heat exchange section can be realized. Therefore, the second bend and the third bend can reduce the flow resistance of the fluid flow in the second heat exchange section, reduce the pressure drop, increase the flow rate of the heat exchange fluid, and further increase the heat exchange efficiency of the first heat exchange channel. In addition, by setting the second bend and the third bend, the circuitous arrangement of the first heat exchange channel can also be realized, so that the heat exchange area of ​​the first heat exchange channel can be increased and the structure can be more compact, which is more conducive to realizing the miniaturization design of the battery and ensuring the volume energy density of the battery.

[0042] In some embodiments, the second heat exchange section further includes: a fifth heat exchange portion, which extends along the fourth side periphery of the first heat exchange section and closes at least part of the opening of the U-shaped area formed by the second heat exchange portion, the third heat exchange portion and the fourth heat exchange portion.

[0043] In the above-mentioned embodiment, by providing the fifth heat exchange part, the second heat exchange section can perform heat exchange on the four sides of the battery assembly. In this way, the second heat exchange section of the first heat exchange channel can perform heat exchange on the four sides of the battery assembly. As a result, the heat exchange effect on the four sides of the battery assembly can be improved, and the temperature uniformity of the battery assembly can be improved.

[0044] In some embodiments, the fifth heat exchange section is arranged opposite to the second heat exchange section, the fifth heat exchange section is connected between the second end of the third heat exchange section and the first heat exchange section, and is connected to the third heat exchange section at an angle, and is connected to the first heat exchange section at an angle; or, one end of the fifth heat exchange section is connected to an end of the fourth heat exchange section away from the second heat exchange section, and the fifth heat exchange section is connected to the fourth heat exchange section at an angle.

[0045] In the above embodiment, by arranging the fifth heat exchange part relative to the second heat exchange part and connecting the fifth heat exchange part between the third heat exchange part and the first heat exchange section or between the fourth heat exchange part and the first heat exchange section, the structure of the first heat exchange channel can be further optimized according to the heat exchange requirements of the battery assembly.

[0046] In some embodiments, the first heat exchange channel further includes: a third heat exchange section, the first heat exchange section is connected between the third heat exchange section and the second heat exchange section, and the third heat exchange section is connected to the first heat exchange section at an angle.

[0047] In the above-mentioned embodiment, by providing the third heat exchange section, the heat exchange area of ​​the first heat exchange channel can be further increased, thereby further improving the heat exchange effect of the first heat exchange channel.

[0048] In some embodiments, the first heat exchange section includes multiple first heat exchange parts, which are bent and connected in sequence in the first direction; the third heat exchange section is arranged on the side of the first heat exchange section away from the third heat exchange part, and the third heat exchange section is connected to the one of the multiple first heat exchange parts that is closest to the second heat exchange part along the first direction.

[0049] In the above embodiment, by adding a third heat exchange section and connecting the third heat exchange section to the one of the multiple first heat exchange parts that is closest to the second heat exchange part along the first direction, the heat exchange area can be increased, the temperature difference of the battery assembly can be balanced, and the temperature uniformity of the battery assembly can be improved.

[0050] In some embodiments, the third heat exchange section extends along the first direction toward a direction away from the second heat exchange portion, and the first heat exchange portion extends along the second direction, wherein the first direction and the second direction are arranged at an angle.

[0051] In the above-mentioned embodiment, by setting the third heat exchange section to extend along the first direction toward the direction away from the second heat exchange part, the heat exchange area of ​​the first heat exchange channel can be increased, thereby improving the heat exchange effect of the first heat exchange channel on the battery cell; at the same time, when the third heat exchange section and the fourth heat exchange part jointly exchange heat with the battery assembly, the temperature difference in the edge area of ​​the battery assembly can be balanced, thereby improving the temperature uniformity at the edge of the battery assembly.

[0052] In some embodiments, the third heat exchange section extends along the first direction to a position close to one of the plurality of first heat exchange parts that is farthest from the second heat exchange part.

[0053] In the above embodiment, by setting the third heat exchange section to extend along the first direction to a position close to one of the multiple first heat exchange parts that is farthest from the second heat exchange part, the length of the third heat exchange part can be increased, the heat exchange area of ​​the third heat exchange part can be increased, and the heat exchange effect of the first heat exchange channel can be improved.

[0054] In some embodiments, the first heat exchange channel further includes: a fourth bending portion, which is arc-shaped and bent and connected between the third heat exchange section and the first heat exchange portion.

[0055] In the above-mentioned embodiment, by setting the fourth bend, the flow direction of the fluid between the third heat exchange section and the first heat exchange section can be changed. At the same time, the arc-shaped fourth bend can reduce the flow resistance of the fluid, reduce the pressure drop, increase the flow rate of the fluid, and further increase the heat exchange efficiency of the first heat exchange channel. In addition, by setting the fourth bend, the circuitous arrangement of the first heat exchange channel can also be realized, so that the heat exchange area of ​​the first heat exchange channel can be increased and the structure can be more compact, which is more conducive to realizing the miniaturization design of the battery and improving the volume energy density of the battery.

[0056] In some embodiments, the first heat exchange channel further includes: a first inlet and outlet section, one end of the first inlet and outlet section is connected to the third heat exchange section at an angle, and the other end of the first inlet and outlet section forms a first inlet and outlet of the first heat exchange channel.

[0057] In the above-mentioned embodiment, by setting the first entrance and exit section, the external pipeline can be facilitated so that the heat exchange medium can enter or discharge the first heat exchange channel. At the same time, it can also guide the heat exchange fluid entering or discharging the first heat exchange channel, so that the heat exchange fluid can enter or discharge quickly, thereby improving the heat exchange rate.

[0058] In some embodiments, the first inlet and outlet section extends along the second direction away from the first heat exchange section, and the third heat exchange section extends along the first direction.

[0059] In the above-mentioned embodiment, by setting the first inlet and outlet section to extend along the second direction away from the first heat exchange section, the pipeline arrangement of the first heat exchange channel can be more rationalized and convenient for connection with external pipelines; at the same time, the first inlet and outlet can be kept away from the battery assembly, which is beneficial to reduce the possibility of damage to the battery assembly due to water leakage from the first inlet and outlet.

[0060] In some embodiments, the first heat exchange channel further includes: a fifth bending portion, which is arc-shaped and bent and connected between the third heat exchange section and the first inlet and outlet section.

[0061] In the above-mentioned embodiment, by setting the fifth bending section, the heat exchange fluid can flow smoothly from the third heat exchange section to the first inlet and outlet section or from the first inlet and outlet section to the third heat exchange section, thereby realizing the liquid inlet or liquid outlet of the first inlet and outlet section; at the same time, the arc-shaped fifth bending portion can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel.

[0062] In some embodiments, the first heat exchange channel also includes: a second entrance and exit section, one end of the second entrance and exit section is connected to the fourth heat exchange part at an angle, and the other end of the second entrance and exit section forms a second entrance and exit of the first heat exchange channel; and the second entrance and exit section extends along the second direction away from the first heat exchange section, and the fourth heat exchange part is extended along the first direction.

[0063] In the above-mentioned embodiment, by setting up a second entrance and exit section, it can be beneficial to the external pipeline so that the heat exchange medium can enter or discharge the first heat exchange channel to complete the heat exchange of the battery cell. At the same time, it can also guide the heat exchange fluid entering or discharging the first heat exchange channel, so that the heat exchange fluid can enter or discharge quickly, thereby improving the heat exchange rate.

[0064] In some embodiments, the first heat exchange section is connected to the downstream of the second heat exchange section along the direction of fluid flow; or, the heat exchange element is configured as follows: when heating the battery assembly of the battery, the first heat exchange section is connected to the downstream of the second heat exchange section along the direction of fluid flow; when cooling the battery assembly of the battery, the first heat exchange section is connected to the upstream of the second heat exchange section along the direction of fluid flow.

[0065] In the above-mentioned embodiment, by setting the first heat exchange section to be connected to the downstream of the second heat exchange section along the fluid flow direction, the first heat exchange channel can be made to preferentially exchange heat on the outer circumference of the battery, which is beneficial to improve the temperature difference of the battery in different environments and to a certain extent improve the service life of the battery. By setting the heat exchange component to be configured as follows: when heating the battery assembly of the battery, the first heat exchange section is connected to the downstream of the second heat exchange section along the fluid flow direction; when cooling the battery assembly of the battery, the first heat exchange section is connected to the upstream of the second heat exchange section along the fluid flow direction, the heat exchange effect on the battery can be further improved, and the temperature uniformity of the battery assembly can be improved.

[0066] In some embodiments, the heat exchange element has one or more heat exchange channels. When the number of heat exchange channels is multiple, the multiple heat exchange channels are arranged at intervals along the first direction, or arranged around each other, at least one heat exchange channel is formed as a first heat exchange channel, and multiple heat exchange channels are arranged in parallel.

[0067] In the above-mentioned embodiments, by setting the heat exchange element to have one or more heat exchange channels, and the multiple heat exchange channels are arranged at intervals or around each other along the first direction, the diversity of the heat exchange channels can be increased, thereby improving the adaptability of the heat exchange element, so that it can meet different battery requirements, thereby improving the market competitiveness of the battery; at the same time, multiple heat exchange channels are arranged in parallel, so that multiple heat exchange channels can exchange heat at the same time, thereby reducing the heat exchange time of the heat exchange element and improving the heat exchange efficiency. In some embodiments, multiple heat exchange channels are arranged at intervals along the first direction, and the two heat exchange channels at both ends of the first direction are both first heat exchange channels; and the two first heat exchange channels are arranged symmetrically about the center line of the heat exchange element along the second direction, wherein the second direction is arranged at an angle to the first direction.

[0068] In the above embodiment, by providing two symmetrically arranged first heat exchange channels, liquid can be fed into both sides simultaneously, the liquid flow rate can be increased, the length of a single heat exchange channel can be shortened, and the pressure drop in a single heat exchange channel can be reduced, thereby improving the heat exchange efficiency.

[0069] In some embodiments, the plurality of heat exchange channels are symmetrically arranged about a center line of the heat exchange element along the second direction.

[0070] In the above-mentioned embodiment, by arranging multiple heat exchange channels symmetrically about the center line of the heat exchange element along the second direction, the multiple heat exchange channels can synchronously exchange heat with the battery assembly to improve the heat exchange efficiency. At the same time, it can also improve the temperature consistency of the two symmetrically arranged heat exchange areas of the battery assembly and the heat exchange element, thereby further improving the temperature uniformity effect of the battery assembly.

[0071] In some embodiments, the multiple heat exchange channels further include: at least one second heat exchange channel, the second heat exchange channel is arranged between two first heat exchange channels, wherein the structure of any second heat exchange channel is the same as or different from that of the first heat exchange channel.

[0072] In the above-mentioned embodiment, by providing at least one second heat exchange channel, the diversity of the arrangement of the heat exchange channels can be increased, so that the heat exchange element can better exchange heat with the battery assembly, thereby improving the heat exchange effect of the heat exchange element.

[0073] In some embodiments, the second heat exchange channel includes a plurality of fourth heat exchange segments, and the plurality of fourth heat exchange segments are connected in sequence, wherein the fourth heat exchange segments extend along the second direction, and the plurality of fourth heat exchange segments are arranged at intervals in the first direction.

[0074] In the above embodiment, by providing the second heat exchange channel with a plurality of fourth heat exchange segments connected in sequence, the structural complexity of the second heat exchange channel can be reduced, thereby reducing the production cost of the second heat exchange channel and thus reducing the production cost of the heat exchange component.

[0075] In some embodiments, the heat exchange element has multiple heat exchange channels, and the multiple heat exchange channels include a first heat exchange channel and at least one third heat exchange channel, the third heat exchange channel is bent in the U-shaped area of ​​the first heat exchange channel, and the first heat exchange channel and the third heat exchange channel are bent in the same plane, and the bending structures of the first heat exchange channel and the third heat exchange channel are the same or different.

[0076] In the above-mentioned embodiment, by providing a plurality of heat exchange channels, the diversity of the heat exchange channels can be increased, so that the arrangement of the heat exchange channels can be designed according to the cooling requirements of the battery, thereby further increasing the heat exchange effect of the heat exchange component and improving the temperature uniformity of the battery.

[0077] In some embodiments, the third heat exchange channel includes a U-shaped region with the same structure as the first heat exchange channel, and at least a portion of the first heat exchange section of the first heat exchange channel is disposed in the U-shaped region of the third heat exchange channel.

[0078] In the above-mentioned embodiment, by setting the third heat exchange channel to include a U-shaped area with the same structure as the first heat exchange channel, at least a portion of the first heat exchange section of the first heat exchange channel is arranged in the U-shaped area of ​​the third heat exchange channel, so that at least a portion of the first heat exchange channel and the third heat exchange channel can be arranged around each other. In this way, the winding method of the heat exchange channel can be arranged according to the heat exchange requirements of various parts of the battery assembly, thereby further increasing the heat exchange effect of the heat exchange component and improving the temperature uniformity of the battery.

[0079] In some embodiments, the U-shaped region of the first heat exchange channel is located at the outermost circumference of the heat exchange element.

[0080] In the above-mentioned embodiment, by arranging the U-shaped area of ​​the second heat exchange section of the first heat exchange channel to be located at the outermost circumference of the heat exchange element, the second heat exchange section can exchange heat on the outer circumference of the battery, which is beneficial to improving the temperature difference of the battery in different environments and increasing the service life of the battery to a certain extent.

[0081] In some embodiments, the heat exchange element includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along the first direction, and a heat exchange channel is defined on the inner side of each heat exchange tube.

[0082] In the above embodiment, by setting the heat exchange element to include at least one heat exchange tube, not only can the process complexity of the heat exchange element be reduced, thereby increasing the production rate of the heat exchange element, but also the fluid pressure drop in a single heat exchange tube can be reduced, thereby increasing the heat exchange efficiency. In addition, the tubular structure is simpler, lower in cost, and easier to process than the plate structure.

[0083] In some embodiments, the heat exchange tube is formed by bending a single tube. Optionally, the heat exchange tube is bent in an arc shape at the bending position.

[0084] In the above-mentioned embodiment, by setting the heat exchange tube to be formed by bending a single tube, the number of welding points of the heat exchanger can be reduced, thereby reducing the risk of leakage of the heat exchanger and improving the reliability of the heat exchanger; at the same time, the operation process of bending a single tube is simpler than the manufacturing process of a plate-like structure, and less material is used, which can significantly reduce the cost of the heat exchanger. By setting the heat exchange tube to be bent in an arc at the bending position, the flow resistance of the fluid can be reduced, the pressure drop can be reduced, and the flow rate of the heat exchange fluid in the heat exchange flow channel can be increased, thereby increasing the heat exchange efficiency of the heat exchanger.

[0085] In some embodiments, the heat exchange tube is bent in an arc at a bending position, and the ratio of the bending radius of the heat exchange tube on the center line along the length direction to the width of the heat exchange tube is greater than or equal to 0.6; optionally, the ratio of the bending radius of the heat exchange tube to the width of the heat exchange tube is greater than or equal to 0.8; optionally, the wall thickness of the heat exchange tube at the bending position is greater than or equal to 0.2 mm.

[0086] In the above-mentioned embodiment, by setting the ratio of the bending radius r of the heat exchange tube on the center line along the length direction to the width d of the heat exchange tube to be greater than or equal to 0.6, the heat exchange tube can be bent and stretched to be less likely to break, thereby reducing the probability of damage to the heat exchange tube when it is bent, improving the structural strength of the heat exchange tube at the bending position, and improving the sealing performance of the heat exchange tube at the bending position. By setting the ratio of the bending radius of the heat exchange tube to the width of the heat exchange tube to be greater than or equal to 0.8, the probability of damage to the heat exchange tube when it is bent can be further reduced, the structural strength of the heat exchange tube at the bending position can be further improved, and the sealing performance of the heat exchange tube at the bending position can be improved. By setting the wall thickness of the heat exchange tube at the bending position to be greater than or equal to 0.2 mm, the wall thickness of the heat exchange tube at the bending position can be prevented from being too thin, which is conducive to ensuring the strength of the heat exchange tube at the bending position, thereby effectively reducing the risk of leakage at the bending position of the heat exchange tube, thereby improving the reliability of the use of the heat exchange tube.

[0087] In some embodiments, at the bending position of the heat exchange tube, the bending thinning rate of the wall thickness of the heat exchange tube is less than or equal to 50%; optionally, the bending thinning rate of the heat exchange tube is less than or equal to 30%.

[0088] In the above-mentioned embodiment, by setting the bending thinning rate of the wall thickness of the heat exchange tube to be less than or equal to 50%, the wall thickness loss of the heat exchange tube can be within a preset range, and the wall thickness of the heat exchange tube at the bending position can be prevented from being too thin, which is conducive to ensuring the strength of the heat exchange tube at the bending position, and effectively reducing the risk of leakage at the bending position of the heat exchange tube, thereby improving the reliability of the heat exchange tube. By setting the bending thinning rate of the heat exchange tube to be less than or equal to 30%, the wall thickness loss of the heat exchange tube after bending can be further reduced, and the strength of the heat exchange tube at the bending position can be further improved.

[0089] In some embodiments, the wall thickness of the heat exchange tube is 0.2 mm-3 mm; optionally, the wall thickness of the heat exchange tube is 0.5 mm-1.2 mm.

[0090] In the above embodiment, by setting the wall thickness of the heat exchange tube to 0.2mm-3mm, the heat exchange tube has a suitable thickness, so that the wall thickness of the heat exchange tube is not too small, thereby ensuring the use strength of the heat exchange tube and effectively reducing the risk of damage to the heat exchange tube; the wall thickness of the heat exchange tube is not too large, which is conducive to reducing the overall weight of the heat exchange tube, thereby reducing the overall weight of the battery and achieving lightweight batteries. By setting the wall thickness of the heat exchange tube to 0.5mm-1.2mm, the overall weight of the heat exchange tube can be reduced while ensuring the strength of the heat exchange tube, thereby achieving lightweight batteries.

[0091] In some embodiments, the heat exchange element includes a heat exchange plate, and the heat exchange channel is formed on the heat exchange plate by stamping.

[0092] In the above embodiment, the heat exchange flow channel is set on the heat exchange plate by stamping, which can reduce the process steps of the heat exchange component and thus improve the production rate of the heat exchange component; at the same time, the stamped heat exchange plate has a large heat exchange area and can ensure the heat exchange efficiency.

[0093] In some embodiments, the width of the heat exchange channel is 3mm-200mm; optionally, the width of the heat exchange channel is 5mm-80mm; further optionally, the height of the heat exchange channel in the third direction is 1mm-20mm; further optionally, the height of the heat exchange channel in the third direction is 4mm-6mm.

[0094] In the above-mentioned embodiment, by setting the width of the heat exchange channel to 3mm-200mm, the width of the heat exchange channel can be made not too large, which is beneficial to the layout of the heat exchange channel and can meet the heat exchange effect required by the heat exchange element; the width of the heat exchange channel can also be made not too small, so that the number of arrangements of the first heat exchange section can be reduced, and the overall cost of the heat exchange element can be reduced. By setting the width of the heat exchange channel to 5mm-80mm, it is beneficial to the layout of the heat exchange channel and can meet the heat exchange effect required by the heat exchange element. At the same time, the number of arrangements of the first heat exchange section can be reduced, and the overall cost of the heat exchange element can be reduced. By setting the height of the heat exchange channel in the third direction to 1mm-20mm, the height of the heat exchange element can be made not too small, and the flow rate of the heat exchange fluid in the heat exchange element can be guaranteed, thereby ensuring the heat exchange effect of the heat exchange element; at the same time, the height of the heat exchange element can be made not too large, which is beneficial to reducing the space occupied by the heat exchange element and realizing the miniaturization of the battery. By setting the height of the heat exchange channel in the third direction to 4 mm-6 mm, the heat exchange effect of the heat exchange component can be guaranteed, and the space occupied by the heat exchange component can be reduced, thereby realizing the miniaturization of the battery.

[0095] In some embodiments, the number of heat exchange channels is 2 to 4.

[0096] In the above embodiment, the number of heat exchange channels is set to 2 to 4, which can reduce the length of a single heat exchange channel, thereby reducing the friction resistance of the heat exchange channel, reducing the pressure drop, and thus improving the heat exchange efficiency of the heat exchange element.

[0097] In some embodiments, the heat exchange component also includes a collector, which includes: a tube body; a plurality of first flow channel interfaces, which correspond one-to-one to and are connected with the first inlets and outlets of the plurality of heat exchange channels; a plurality of second flow channel interfaces, which correspond one-to-one to and are connected with the second inlets and outlets of the plurality of heat exchange channels, and, along the extension direction of the tube body, at least two second flow channel interfaces are respectively located on both sides of the plurality of first flow channel interfaces; a partition structure, which is arranged inside the tube body, and the partition structure separates the first flow channel interface and the second flow channel interface inside the tube body, and the plurality of second flow channel interfaces are connected inside the tube body.

[0098] In the above-mentioned embodiment, by setting a collector, a plurality of first flow channel interfaces and a plurality of second flow channel interfaces are separated by a partition structure, and the plurality of second flow channel interfaces are connected in the tube body, so that the first flow channel interface and the second flow channel interface can be respectively formed as the input end and the output end of the heat exchange flow channel, and then one tube body can be used to complete the work of liquid intake and liquid discharge, reducing the number of collecting pipes used, and at the same time, the use of external connecting pipes can also be reduced, thereby reducing the production cost and occupied space of the heat exchange management component, and reducing the assembly steps and installation space of the thermal management component; in addition, the second flow channel interface includes a plurality of, and at least two second flow channel interfaces are located on both sides of the first flow channel interface, so that the heat exchange fluid can flow from the surrounding area of ​​the battery to the middle area to realize heat exchange, and the heat exchange fluid can also flow from the middle area of ​​the battery to the surrounding area to realize heat exchange, thereby improving the temperature uniformity of the battery and extending the service life of the battery.

[0099] In some embodiments, the tube body is divided into a first space and a second space that are independent of each other by a partition structure. The first space is connected to the first flow channel interface, and the second space is connected to the second flow channel interface. Along the extension direction of the tube body, the second space includes a first section, a second section, and a third section that are connected in sequence. The first section and the third section are respectively located on both sides of the first space, and the second section is side by side with the first space.

[0100] In the above-mentioned embodiment, by setting the first space and the second space to be independent of each other and not connected to each other, two independent flow channels can be formed inside the tube body, so that the inlet and outlet of the heat exchange fluid do not interfere with each other. At the same time, the first space and the second space are arranged side by side, thereby reducing the size of the tube body, thereby reducing the space occupied by the collecting pipe.

[0101] In some embodiments, the partition structure includes a first partition plate and a second partition plate, the first partition plate is used to separate the second section and the first space, the second partition plate includes at least two and is respectively located at both ends of the first partition plate along the extension direction of the tube body, the second partition plate is used to separate the first section and the first space, and, the third section and the first space.

[0102] In the above embodiment, by providing the first partition plate and the second partition plate, two independent spaces can be formed inside the tube body, so that the inflow and outflow of liquid do not interfere with each other, thereby improving the heat exchange effect of the battery.

[0103] In some embodiments, the heat exchange component also includes: a first tube portion, an inlet end of the first tube portion is formed as a first inlet and outlet of the heat exchange channel; a second tube portion, an outlet end of the second tube portion is formed as a second inlet and outlet of the heat exchange channel; a mounting component, the mounting component is configured to be sealed and connected to the battery box, and a through hole is formed on the mounting component to connect the spaces on both sides of the mounting component, and the first tube portion and / or the second tube portion pass through the through hole and are sealed and connected to the through hole.

[0104] In the above-mentioned embodiment, by providing a mounting part, it is no longer necessary to separately seal the first tube part and the second tube part with the box body when assembling the battery. In this way, the labor and materials required for battery assembly can be reduced, thereby increasing the battery production rate and reducing the labor cost of producing the battery.

[0105] In some embodiments, the mounting member has a cavity with an opening on one side, and a through hole passes through the bottom wall of the cavity opposite to the opening. The mounting member is suitable for being arranged between the box body and the bottom guard plate of the box body, and the outer peripheral surface of the mounting member is suitable for being sealed and connected with the box body and the bottom guard plate.

[0106] In the above-mentioned embodiment, by setting the mounting member as a cavity with an opening on one side, the overall weight of the mounting member can be reduced, and then the overall weight of the entire battery can be reduced, thereby achieving lightweight battery; at the same time, the mounting member is suitable for being arranged between the box body and the bottom guard plate of the box body, so that the bottom of the box body can isolate the heat exchange component and multiple battery cells, thereby, when the heat exchange component is damaged, it will not affect multiple battery cells, thereby reducing the cost of battery maintenance.

[0107] In a second aspect, an embodiment of the present application provides a battery, comprising a heat exchange element according to the first aspect of the present application.

[0108] In the above-mentioned embodiment, by setting the heat exchange element of the above-mentioned first aspect, by bending the second heat exchange section, and the first heat exchange section is bent and set in the area surrounded by the second heat exchange section, when the heat exchange element exchanges heat with the battery assembly, the outer second heat exchange section can be opposite to the outer battery cells of the battery, and the first heat exchange section can be opposite to the internal battery cells, so that the heat exchange element can compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cells and the environment, so that the heat exchange effect of the battery cells outside the battery assembly and the battery cells inside the battery assembly tend to be consistent, thereby improving the temperature uniformity of the battery, thereby improving the service life of the battery to a certain extent, thereby improving the overall performance of the battery.

[0109] In some embodiments, the battery also includes: a battery assembly, the battery assembly includes a battery cell, the battery cell includes a plurality of battery cells stacked in sequence along a third direction; a heat exchange element is arranged on one side of the battery assembly in a fourth direction and exchanges heat with the battery assembly; wherein the third direction and the fourth direction are arranged at an angle.

[0110] In the above embodiment, by arranging the heat exchange element on one side of the battery assembly in the fourth direction and exchanging heat with the battery assembly, the temperature of the battery assembly can be maintained within the safe operating temperature, thereby improving the reliability and service life of the battery assembly.

[0111] In some embodiments, multiple battery cells located at the outermost periphery of the battery assembly constitute peripheral battery cells, and the second heat exchange section includes a first flow channel portion and a second flow channel portion connected to each other, and at least one of the first flow channel portion and the second flow channel portion is in contact with the peripheral battery cells.

[0112] In the above embodiment, by setting at least a portion of the second heat exchange section to fit the peripheral battery cell group, the heat exchange efficiency of the peripheral battery cell group can be improved, thereby further balancing the temperature difference caused by the heat dissipation of the peripheral battery cells of the battery assembly being greater than the heat dissipation of the inner battery cells.

[0113] In some embodiments, the battery assembly includes a battery cell, and all battery cells of the battery cell together form a peripheral battery cell; or, the battery assembly includes multiple battery cells, and the multiple battery cells are arranged in sequence along the fifth direction, and the multiple battery cells located at the outermost periphery of the battery assembly together form a peripheral battery cell, and the third direction, the fourth direction and the fifth direction are arranged at angles to each other.

[0114] In the above-mentioned embodiment, by setting the battery assembly to include a battery unit, all the battery cells of the battery unit together form a peripheral battery cell. At this time, the entire second heat exchange section and the first heat exchange section exchange heat with the peripheral battery cell, thereby not limiting the specific structure and layout of the second heat exchange section and the first heat exchange section, thereby reducing the layout complexity of the first heat exchange channel; by setting multiple battery cells located at the outermost periphery of the battery assembly, the multiple battery cells together form a peripheral battery cell, thereby limiting the heat exchange position of the second heat exchange section, thereby facilitating the layout of the heat exchange channel.

[0115] In some embodiments, the peripheral battery cell group includes a first group of battery cells, a second group of battery cells and a third group of battery cells arranged adjacent to each other, the multiple battery cells included in the first group of battery cells are stacked along the third direction, the multiple battery cells included in the second group of battery cells are stacked along the fifth direction, and the multiple battery cells included in the third group of battery cells are stacked along the fifth direction; the second heat exchange section includes a second heat exchange part, a third heat exchange part and a fourth heat exchange part connected to each other; the second heat exchange part extends and fits to the first group of battery cells to enable heat exchange, and / or the third heat exchange part extends and fits to the second group of battery cells to enable heat exchange, and / or the fourth heat exchange part extends and fits to the third group of battery cells to enable heat exchange.

[0116] In the above-mentioned embodiment, since the first group of battery cells, the second group of battery cells and the third group of battery cells are all peripheral battery cell groups, wherein the peripheral battery cell group is arranged at the outermost periphery of the battery assembly, is closest to the battery case, has more heat exchange with the environment, and has a lower temperature than the battery cells at other positions, and then by providing at least one of the second heat exchange part, the third heat exchange part and the fourth heat exchange part to be in close contact with the peripheral battery cells for heat exchange, the heat exchange component can stably and reliably cool or heat the peripheral battery cell group, so that the battery assembly can have a good heat exchange effect, and the temperature distribution in the battery assembly is more uniform, thereby making the battery operation more stable.

[0117] In some embodiments, the peripheral battery cells also include a fourth group of battery cells, and the plurality of battery cells included in the fourth group of battery cells are arranged along a third direction. The second heat exchange section also includes a fifth heat exchange portion, and the fifth heat exchange portion closes at least a portion of the opening of the U-shaped area formed by the second heat exchange portion, the third heat exchange portion and the fourth heat exchange portion. The fifth heat exchange portion extends and fits the fourth group of battery cells to enable heat exchange.

[0118] In the above-mentioned embodiment, a fifth heat exchange part is provided in the second heat exchange section to fit with the fourth group of battery cells, so that the heat exchange component can better cooperate with the heat dissipation conditions of the battery cells at different positions in the battery to arrange the heat exchange flow channels, so that the heat exchange component has a better heat exchange effect on the battery assembly, thereby making the internal temperature distribution of the battery more uniform during operation, thereby making the battery operation more stable.

[0119] In some embodiments, the second heat exchange section extends along the second direction, the second direction and the third direction are the same direction, the third heat exchange section and the fourth heat exchange section extend along the first direction, the first direction and the fifth direction are the same direction; and / or, the first heat exchange section extends along the first direction, the first direction and the fifth direction are the same direction.

[0120] In the above-mentioned embodiment, since the battery unit includes a plurality of battery cells stacked in sequence along the third direction, and the plurality of battery cells are arranged in sequence along the fifth direction, the second heat exchange portion is extended along the second direction, and the second direction is the same direction as the third direction, and the third heat exchange portion and the fourth heat exchange portion extend along the first direction, and the first direction and the fifth direction are the same direction, the second heat exchange portion can be extended along the stacking direction of the plurality of battery cells, and the third heat exchange portion and the fourth heat exchange portion can be extended along the arrangement direction of the plurality of battery cells, and the extension directions of the second heat exchange portion, the third heat exchange portion and the fourth heat exchange portion can be designed according to the arrangement of the battery cells, thereby enabling the layout of the first heat exchange channel to better meet the heat exchange requirements of the battery assembly and improve the heat exchange efficiency.

[0121] In the above-mentioned embodiment, by setting the first heat exchange portion to extend along the first direction, the first direction and the fifth direction are the same direction, so that the first heat exchange portion can extend along the arrangement direction of the multiple battery cells, and then the first heat exchange portion can perform heat exchange on the multiple battery cells of the multiple battery cells. When the multiple battery cells are arranged in sequence along the thickness direction of the battery cells, the first heat exchange portion can realize heat exchange for the multiple battery cells; when the multiple battery cells are arranged in sequence along the length direction of the battery cells, the heat exchange area between the first heat exchange portion and the battery cells increases, and then the heat exchange effect of the battery cells can be increased.

[0122] In some embodiments, the battery assembly includes a plurality of battery cells arranged in sequence along a fifth direction, at least one battery cell located at both ends in the fifth direction is a first group of battery cells, and the second heat exchange portion, and at least one first heat exchange portion of the first heat exchange section are jointly attached to the first group of battery cells to enable heat exchange.

[0123] In the above-mentioned embodiment, by providing a second heat exchange portion and at least one first heat exchange portion of the first heat exchange section to jointly exchange heat with the first group of battery cells, the heat exchange area between the first heat exchange channel and the first group of battery cells can be increased. At the same time, the temperature difference at different positions of the first group of battery cells can be balanced, thereby improving the temperature uniformity of the first group of battery cells.

[0124] In some embodiments, there are multiple first heat exchange parts, which are bent and connected in sequence in the first direction; the second heat exchange part and the first heat exchange part farthest from the second heat exchange part along the connecting line connected in sequence exchange heat with the first group of battery cells.

[0125] In the above-mentioned embodiment, a second heat exchange part and a first heat exchange part which is farthest from the second heat exchange part along a connecting line connected in sequence are provided to exchange heat with the first group of battery cells, so that the second heat exchange part and an adjacent first heat exchange part exchange heat with the first group of battery cells, and furthermore, the second heat exchange part exchanges heat with an edge of the first group of battery cells, and the first heat exchange part exchanges heat with the other side of the first group of battery cells, wherein the temperature difference between the heat exchange fluid in the second heat exchange part and the fluid in the first heat exchange part is large, and the heat exchange temperature of the first group of battery cells is approximately the average temperature of the second heat exchange part and the adjacent first heat exchange part, thereby balancing the temperature difference of the first group of battery cells, and further improving the temperature uniformity of the first group of battery cells.

[0126] In some embodiments, the second heat exchange section includes a second heat exchange part, a third heat exchange part and a fourth heat exchange part that are connected to each other, the first end of the third heat exchange part is connected to the second heat exchange part at an angle, the second end of the third heat exchange part is connected to the first heat exchange section at an angle, the second heat exchange part extends and fits to the first group of battery cells to enable heat exchange, the third heat exchange part extends and fits to the second group of battery cells to enable heat exchange, and the fourth heat exchange part extends and fits to the third group of battery cells to enable heat exchange; or the second heat exchange part is fitted to the second group of battery cells to enable heat exchange, and the third heat exchange part is fitted to the first group of battery cells to enable heat exchange.

[0127] In the above-mentioned embodiment, by setting the second heat exchange part to extend and fit to the first group of battery cells so as to be able to perform heat exchange, the third heat exchange part to extend and fit to the second group of battery cells so as to be able to perform heat exchange, and the fourth heat exchange part to extend and fit to the third group of battery cells so as to be able to perform heat exchange, the second heat exchange section can be heat exchanged with the periphery of the battery assembly, thereby balancing the temperature difference of the battery assembly caused by heat dissipation. By setting the second heat exchange part to fit to the second group of battery cells so as to be able to perform heat exchange, and the third heat exchange part to fit to the first group of battery cells so as to be able to perform heat exchange, the heat exchange flow channel of the heat exchange component can be designed according to the arrangement of multiple battery cells, thereby improving the applicability of the heat exchange component, enabling it to meet the cooling requirements of different batteries, and increasing the heat exchange efficiency and temperature equalization effect of the battery.

[0128] In some embodiments, the first heat exchange channel also includes: a third heat exchange section, the third heat exchange section is connected to the end of the first heat exchange section away from the second heat exchange section, and is connected to the first heat exchange section at an angle; the battery assembly also has a fifth group of battery cells, the fifth group of battery cells includes multiple battery cells arranged in a stacked manner along a fifth direction, and the fifth group of battery cells are arranged adjacent to the third group of battery cells, wherein the third heat exchange section and the fourth heat exchange part are both attached to the third group of battery cells to enable heat exchange; or, the third heat exchange section is attached to the fifth group of battery cells to enable heat exchange, and the fourth heat exchange part is attached to the third group of battery cells to enable heat exchange; or, the third heat exchange section is attached to the third group of battery cells to enable heat exchange, and the fourth heat exchange part is arranged on the outside of the battery assembly in the third direction.

[0129] In the above-mentioned embodiment, by setting the third heat exchange section and the fourth heat exchange part to be in close contact with the third group of battery cells for heat exchange, the temperature difference of the third group of battery cells can be balanced and the temperature uniformity of the third group of battery cells can be improved; by setting the third heat exchange section to be in close contact with the third group of battery cells for heat exchange and the fourth heat exchange part is arranged on the outside of the battery assembly in the third direction, the heat exchange process can be simplified and the difficulty of producing the heat exchange parts can be reduced.

[0130] In some embodiments, the first heat exchange portion of the first heat exchange section and the second heat exchange portion of the second heat exchange section both extend along the second direction and are arranged at intervals in the first direction, and a battery unit is fitted with a second heat exchange portion and at least one first heat exchange portion to enable heat exchange; or, a battery unit is fitted with at least two first heat exchange portions to enable heat exchange.

[0131] In the above-mentioned embodiment, a battery cell is arranged to be attached to a second heat exchange part and at least one first heat exchange part so as to enable heat exchange; or a battery cell is attached to at least two first heat exchange parts so as to enable heat exchange. Thus, a battery cell can exchange heat with at least two heat exchange parts, thereby increasing the heat exchange area and further increasing the heat exchange effect.

[0132] In some embodiments, the total number of the first heat exchange parts and the second heat exchange parts of the first heat exchange channel is greater than or equal to 4.

[0133] In the above embodiment, by setting the total number of the first heat exchange part and the second heat exchange part of the first heat exchange channel to be greater than or equal to 4, the length of each heat exchange channel can be increased, the total number of heat exchange channels can be reduced, and the sealing performance of the heat exchange component can be improved.

[0134] In some embodiments, the number of first heat exchange channels is two, and each first heat exchange channel includes: three first heat exchange parts, one second heat exchange part, one third heat exchange part, one fourth heat exchange part and a third heat exchange section. The number of battery cells is four. The battery cell at the end located in the fifth direction is fitted with a first heat exchange part and a second heat exchange part to enable heat exchange, and any remaining battery cells are fitted with two first heat exchange parts to enable exchange. The third heat exchange part connects the second heat exchange part and the first heat exchange part farthest from the second heat exchange part, and is fitted with the second group of battery cells to enable heat exchange. The third heat exchange section is connected to the first heat exchange part closest to the second heat exchange part, and the third heat exchange section and / or the fourth heat exchange part are fitted with the third group of battery cells to enable heat exchange.

[0135] In the above embodiment, four battery cells are matched with two first heat exchange channels, and each first heat exchange channel includes three first heat exchange parts and one second heat exchange part, so that each battery cell can exchange heat with the two heat exchange parts. In this way, the temperature uniformity of each battery cell can be improved, and then the temperature uniformity of the entire battery can be improved.

[0136] In some embodiments, the number of first heat exchange channels is two, and each first heat exchange channel includes: five first heat exchange parts, one second heat exchange part, one third heat exchange part, one fourth heat exchange part and a third heat exchange section. The number of battery cells is six. The battery cell at the end located in the fifth direction is fitted with a first heat exchange part and a second heat exchange part to enable heat exchange, and any remaining battery cells are fitted with two first heat exchange parts to enable heat exchange. The third heat exchange part connects the second heat exchange part and the first heat exchange part farthest from the second heat exchange part, and is fitted with the second group of battery cells to enable heat exchange. The third heat exchange section is connected to the first heat exchange part closest to the second heat exchange part, and the third heat exchange section and / or the fourth heat exchange part are fitted with the third group of battery cells to enable heat exchange.

[0137] In the above embodiment, six battery cells are matched with two first heat exchange channels, and each first heat exchange channel includes five first heat exchange parts and one second heat exchange part, which can ensure that each battery cell can exchange heat with the two heat exchange parts, thereby ensuring the uniformity of the temperature of each battery cell.

[0138] In some embodiments, the number of first heat exchange channels is two, and each first heat exchange channel includes: five first heat exchange parts, one second heat exchange part, one third heat exchange part, one fourth heat exchange part and a third heat exchange section. The number of battery cells is four, and the battery cell at the end located in the fifth direction is fitted with two first heat exchange parts and one second heat exchange part to enable heat exchange, and any remaining battery cells are fitted with three first heat exchange parts to enable heat exchange, the third heat exchange part connects the second heat exchange part and the first heat exchange part farthest from the second heat exchange part, and is fitted with the second group of battery cells to enable heat exchange, the third heat exchange section is connected to the first heat exchange part closest to the second heat exchange part, and the third heat exchange section and / or the fourth heat exchange part are fitted with the third group of battery cells to enable heat exchange.

[0139] In the above-mentioned embodiment, four battery cells are matched with two first heat exchange channels, and each first heat exchange channel includes five first heat exchange parts and one second heat exchange part, so that each battery cell can exchange heat with three heat exchange parts, which can further improve the temperature uniformity of each battery cell. At the same time, the heat exchange area of ​​the heat exchange component for each battery cell can be increased, thereby improving the heat exchange effect of the heat exchange component and improving the temperature uniformity of the battery.

[0140] In some embodiments, the battery includes a case and a battery assembly, the case includes a case body, the case body is an integral stamped part and includes a bottom wall and a surrounding wall, the battery assembly is disposed in the case body, the battery assembly includes a battery cell, and the battery cell includes a plurality of battery cells stacked in sequence along a third direction.

[0141] In the above embodiment, by setting the box body as an integral stamped part, the process steps of the box can be reduced and the production cost of the box can be reduced. At the same time, the overall weight of the box can be reduced while ensuring the rigidity of the box, thereby reducing the overall weight of the battery and reducing the load on the vehicle.

[0142] In some embodiments, the thermal management system of the battery includes a temperature regulating component, which includes at least one of a first temperature regulating component and a second temperature regulating component. The first temperature regulating component is arranged outside the box body and is in contact with the outer wall of the box body; the second temperature regulating component is arranged inside the box body and is located between the surrounding wall of the battery cell and the box body; at least one of the first temperature regulating component and the second temperature regulating component forms a heat exchange component.

[0143] In the above-mentioned embodiment, by setting at least one of the first temperature regulating component and the second temperature regulating component to form a heat exchange component, the thermal management system of the battery can better manage the thermal state of the battery, so that during the operation of the battery, the battery components can operate in a good temperature environment, thereby making the battery operation more stable and the battery performance better.

[0144] In some embodiments, the thermal management system of the battery further includes a third temperature regulating component, which is disposed in the box body and between two adjacent battery cells. The structure of the third temperature regulating component is the same as or different from that of the heat exchange component.

[0145] In the above-mentioned embodiment, by providing a third temperature regulating member between two adjacent battery cells, the third temperature regulating member can be in contact with a large surface of the battery cell, thereby increasing the contact area between the third temperature regulating member and the battery cell, thereby improving the heat exchange effect of the third temperature regulating member and improving the heat exchange efficiency of the entire battery.

[0146] In some embodiments, the box body also includes a bottom guard plate, which is arranged on the lower side of the box body, and the heat exchange element is arranged between the box body and the bottom guard plate; the battery also includes a foam element, at least part of which is filled in the gap formed by the bending of the heat exchange tube of the heat exchange element.

[0147] In the above-mentioned embodiment, by providing a foam part, and at least partially filling the gap formed by the bending of the heat exchange tube of the heat exchanger, the heat exchanger can be fixed to a certain extent, so that the heat exchanger can be more stably arranged between the bottom guard plate and the bottom wall of the box body. At the same time, when the battery is subjected to external impact, the foam part can also absorb a certain impact energy, play a certain protective role for the heat exchanger, and further reduce the probability of damage to the heat exchanger.

[0148] In some embodiments, the foam part includes a main body and a plurality of ribs, the plurality of ribs are formed on one side surface of the main body in the thickness direction, the plurality of ribs cooperate with the main body to define a receiving groove, the heat exchange tube is arranged in the receiving groove, and the thickness of the heat exchange tube is greater than the depth of the receiving groove.

[0149] In the above embodiment, by providing a plurality of ribs, the movement of the heat exchange tube can be limited, thereby improving the stability of the heat exchange element; at the same time, by setting the thickness of the heat exchange tube to be greater than the depth of the receiving groove, the heat exchange effect of the heat exchange tube can be guaranteed.

[0150] In a third aspect, an embodiment of the present application provides an electrical device, comprising a battery according to the second aspect of the present application.

[0151] According to the electric device of the present application, the battery of the second aspect is provided, thereby improving the overall performance of the electric device.

[0152] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0153] Figure 1 is a schematic diagram of a vehicle according to an embodiment of the present application;

[0154] Figure 2 is an exploded diagram of a battery according to an embodiment of the present application;

[0155] Figure 3 is an exploded diagram of a battery according to another embodiment of the present application;

[0156] Figure 4 is a schematic diagram of a battery assembly and a heat exchange element according to a first embodiment of the present application;

[0157] Figure 5 is a schematic diagram of a battery assembly and a heat exchange element according to a second embodiment of the present application;

[0158] Figure 6 is a schematic diagram of a battery assembly and a heat exchange element according to a third embodiment of the present application;

[0159] Figure 7 is a schematic diagram of a battery assembly and a heat exchange element according to a fourth embodiment of the present application;

[0160] Figure 8 is a schematic diagram of a battery assembly and a heat exchange element according to a fifth embodiment of the present application;

[0161] Fig. 9 is a schematic diagram of a heat exchanger and a battery box according to some embodiments of the present application;

[0162] Fig.10 is a schematic diagram of a heat exchange element and a box according to other embodiments of the present application;

[0163] Fig.11 is a schematic diagram of a heat exchange element according to an embodiment of the present application at an angle;

[0164] Fig.12 A schematic diagram of a current collector according to an embodiment of the present application;

[0165] Fig.13 A schematic diagram of a current collector according to another angle of an embodiment of the present application;

[0166] Fig.14 is a schematic diagram of a heat exchange element according to another embodiment of the present application;

[0167] Fig.15 yes Fig.14 An enlarged view of the circled A;

[0168] Fig.16 yes Fig.14 A schematic diagram of the heat exchange element from another angle shown in FIG.

[0169] Fig.17 yes Fig.16 An enlarged view of the circled B;

[0170] Fig.18 is a schematic diagram of a battery assembly and a heat exchange element according to a sixth embodiment of the present application;

[0171] Fig.19 is a schematic diagram of a battery assembly and a heat exchange element according to a seventh embodiment of the present application;

[0172] Fig. 20 is a schematic diagram of a battery assembly and a heat exchange element according to an eighth embodiment of the present application;

[0173] Fig.21 is a schematic diagram of a battery assembly and a heat exchange element according to a ninth embodiment of the present application;

[0174] Fig. 22 is a schematic diagram of a battery assembly and a heat exchange element according to a tenth embodiment of the present application;

[0175] Fig.23 is a schematic diagram of a battery assembly and a heat exchange element according to an eleventh embodiment of the present application;

[0176] Fig.24 is an exploded diagram of a battery according to another embodiment of the present application;

[0177] Fig.25 is a partial cross-sectional view of a battery according to another embodiment of the present application;

[0178] Fig.26 is a partial schematic diagram of a battery according to another embodiment of the present application;

[0179] Fig. 27 yes Fig.24 A partial schematic diagram of a battery shown in;

[0180] Fig.28 yes Fig. 27 An enlarged view of the circled C;

[0181] Fig.29 It is a schematic diagram of the arrangement of heat exchange components and battery assemblies according to an embodiment of the present application.

[0182] Reference numerals:

[0183] 1. Vehicles;

[0184] 1000. Battery;

[0185] 100. Heat exchange parts;

[0186] 10. The first heat exchange channel;

[0187] 11. first heat exchange section; 111. first heat exchange portion; 112. first bending portion;

[0188] 12, second heat exchange section; 120, U-shaped area; 121, second heat exchange part; 122, third heat exchange part; 123, second bending part; 124, third bending part; 125, fourth heat exchange part; 126, sixth bending part; 127, fifth heat exchange part; 1201, first flow channel part; 1202, second flow channel part;

[0189] 13. third heat exchange section; 14. fourth bending portion; 15. first inlet and outlet section; 16. fifth bending portion; 17. second inlet and outlet section; 18. seventh bending portion; 19. mounting member;

[0190] 20. Current collector; 21. Tube body; 211. First space; 212. Second space; 22. First flow channel interface; 23. Second flow channel interface; 24. Partition structure; 241. First partition plate; 242. Second partition plate;

[0191] 30. second heat exchange channel; 31. fourth heat exchange section; 40. third heat exchange channel;

[0192] 200, battery assembly; 201, battery unit; 2011, battery monomer; 202, first group of battery monomers; 203, second group of battery monomers; 204, third group of battery monomers; 205, fourth group of battery monomers; 206, fifth group of battery monomers;

[0193] 300, box body; 301, box body; 302, bottom guard plate; 303, cover plate;

[0194] 400. Foam parts; 401. Body; 402. Convex ribs;

[0195] 500, temperature adjustment element; 501, first temperature adjustment element; 502, second temperature adjustment element; 503, third temperature adjustment element;

[0196] 2000, controller; 3000, motor. DETAILED DESCRIPTION

[0197] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0198] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0199] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0200] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0201] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0202] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0203] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0204] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0205] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0206] It is understandable that the temperature environment inside the battery is affected by the external weather conditions. The battery cells in the battery need to be within a certain temperature range during operation. When the temperature inside the battery exceeds or falls below this range, the stability and performance of the battery will be greatly affected. For example, when the weather is hot, the battery cells need to be cooled and dissipated so that the temperature inside the battery is within the required temperature range. When the weather is cold, the battery cells need to be heated and heated so that the temperature inside the battery can still be within the required temperature range.

[0207] In the related art, batteries are usually equipped with heat exchange structures to dissipate heat and cool down the battery cells as well as heat and increase the temperature. However, since the battery cells arranged on the periphery of the battery are closer to the side walls of the box body than the internal battery cells, the battery cells on the periphery of the battery can dissipate heat outwards more easily through structures such as the side walls or end plates of the battery, and are less affected by the heat dissipation of adjacent battery cells; while it is more difficult for the internal battery cells to dissipate heat and they are more affected by the heat dissipation of adjacent battery cells. In this way, the heat dissipation conditions of the battery cells at different positions of the battery are different, resulting in a relatively uneven temperature distribution between the peripheral battery cells and the internal battery cells in the battery after the battery is in operation, which makes the battery less stable during operation and the battery performance is prone to attenuation.

[0208] Based on the above considerations, in order to solve the temperature difference caused by the heat dissipation of the battery cells around the battery, and to make the temperature distribution between the peripheral battery cells and the internal battery cells in the battery more uniform, the present application proposes a heat exchange component, the heat exchange component includes a first heat exchange channel, the first heat exchange channel includes a first heat exchange section and a second heat exchange section; the second heat exchange section is bent, the first heat exchange section is bent in the area surrounded by the second heat exchange section, and is connected to the second heat exchange section in a bent manner; wherein the second heat exchange section is configured to be opposite to and heat-exchange with part of the battery cells located on the peripheral side of the battery assembly, and the first heat exchange section is configured to be opposite to and heat-exchange with the corresponding battery cells in the area surrounded by the second heat exchange section, thereby, So that the second heat exchange section can exchange heat with multiple battery cells on the periphery of the battery. When the battery needs to be heated under low temperature conditions, the second heat exchange section can be located upstream of the first heat exchange section along the fluid flow direction, that is, the high-temperature fluid first flows through the second heat exchange section. When the battery needs to dissipate heat and cool down, the second heat exchange section can be located downstream of the first heat exchange section along the fluid flow direction. At this time, the low-temperature fluid first passes through the first heat exchange section and then to the second heat exchange section. The temperature of the heat exchange fluid at the second heat exchange section is higher. In this way, the temperature of the heat exchange fluid inside the second heat exchange section can always be higher than the temperature inside the first heat exchange section. As a result, the temperature difference caused by heat dissipation around the battery can be improved, the temperature uniformity of the battery can be improved to a certain extent, and then the service life of the battery can be improved to a certain extent.

[0209] The heat exchanger disclosed in the present application can be used in electrical devices that use batteries as power sources or various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0210] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device in an embodiment of the present application.

[0211] Reference Figure 1 , Figure 1A schematic diagram of a vehicle 1 provided for some embodiments of the present application. Vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1000 is provided inside the vehicle 1, and the battery 1000 may be provided at the bottom, head or tail of the vehicle 1. The battery 1000 may be used to power the vehicle 1, for example, the battery 1000 may be used as an operating power source for the vehicle 1. The vehicle 1 may also include a controller 2000 and a motor 3000, and the controller 2000 is used to control the battery 1000 to power the motor 3000, for example, for the starting, navigation and working power requirements of the vehicle 1 during driving.

[0212] In some embodiments of the present application, the battery 1000 can not only serve as an operating power source for the vehicle 1 , but also serve as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0213] Reference Figure 2-Figure 3 , Figure 2 An exploded view of a battery 1000 according to some embodiments of the present application is shown in FIG. Figure 3 This is an exploded view of a battery 1000 according to some other embodiments of the present application. The battery 1000 includes a case body 300, a battery cell 2011 and a heat exchange element 100. The case body 300 has a receiving cavity. The battery cell 2011 is received in the receiving cavity of the case body 300. The heat exchange element 100 can be disposed between the battery cell 2011 and the case body 300, or between adjacent battery cells 2011.

[0214] Among them, the box body 300 is used to provide a storage space for the battery cell 2011, and the box body 300 can adopt a variety of structures. In some embodiments, the box body 300 may include a first part (such as the box body 301 described below) and a second part (such as the cover plate 303 described below), the first part and the second part cover each other, and the first part and the second part jointly define a storage space for accommodating the battery cell 2011. The second part can be a hollow structure with an opening at one end, and the first part can be a plate-like structure, and the first part covers the opening side of the second part, so that the first part and the second part jointly define a storage space; the first part and the second part can also be hollow structures with an opening on one side, and the opening side of the first part covers the opening side of the second part. Of course, the box body 300 formed by the first part and the second part can be a variety of shapes, such as a cylinder, a cuboid, etc. Optionally, in some embodiments, the box body 300 also includes a bottom guard plate 302, which is arranged on the lower side of the box body 401 to further enhance the bearing strength and impact resistance of the bottom of the box body 401. The base plate may be made of a variety of materials, including but not limited to: copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0215] In the battery 1000, there may be multiple battery cells 2011, and the multiple battery cells 2011 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 2011 are both connected in series and in parallel. The multiple battery cells 2011 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 2011 is accommodated in the box 300; of course, the battery 1000 may also be a battery module formed by connecting multiple battery cells 2011 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 300. The battery 1000 may also include other structures, for example, the battery 1000 may also include a converging component for realizing electrical connection between the multiple battery cells 2011.

[0216] Each battery cell 2011 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 2011 may be cylindrical, flat, rectangular, or in other shapes.

[0217] In the battery 1000, the heat exchange element 100 may be disposed between the multiple battery cells 2011 and the top wall of the box 300, or between the multiple battery cells 2011 and the bottom wall of the box 300, or between the bottom wall of the box 300 and the bottom guard plate 302, or between two adjacent battery cells 2011, to provide heat exchange for the multiple battery cells 2011. In some embodiments, the heat exchange element 100 may include a heat exchange tube and a current collector 20, wherein the heat exchange tube is connected to the current collector 20, the heat exchange tube may be a flat tube, a round tube, a harmonica tube or other shapes of tubes, and the current collector 20 may be a rectangular tube or a round tube, etc.

[0218] Reference below Figure 4-Figure 17 The heat exchange element 100 according to the first embodiment of the present application is described. Figure 4 is a schematic diagram of a battery assembly 200 and a heat exchange element 100 according to a first embodiment of the present application, Figure 5 is a schematic diagram of a battery assembly 200 and a heat exchange element 100 according to a second embodiment of the present application. Figure 6 is a schematic diagram of a battery assembly 200 and a heat exchange element 100 according to a third embodiment of the present application. Figure 7 is a schematic diagram of a battery assembly 200 and a heat exchange element 100 according to a fourth embodiment of the present application, Figure 8 is a schematic diagram of a battery assembly 200 and a heat exchange element 100 according to a fifth embodiment of the present application, Fig. 9 is a schematic diagram of a heat exchange element 100 and a box 300 of a battery 1000 according to some embodiments of the present application, Fig.10 is a schematic diagram of a heat exchange element 100 and a box body 300 according to other embodiments of the present application. Fig.11It is a schematic diagram of a heat exchange element 100 at an angle according to an embodiment of the present application.

[0219] The present application embodiment provides a heat exchange element 100, such as Figure 4 As shown, the heat exchange element 100 includes a first heat exchange channel 10, and the first heat exchange channel 10 includes a first heat exchange section 11 and a second heat exchange section 12; the second heat exchange section 12 is bent, and the first heat exchange section 11 is bent in the area surrounded by the second heat exchange section 12, and is bent and connected to the second heat exchange section 12; wherein the second heat exchange section 11 is configured to be opposite to and heat-exchange with part of the battery cells 2011 located on the peripheral side of the battery assembly, and the first heat exchange section 11 is configured to be opposite to and heat-exchange with the corresponding battery cells in the area surrounded by the second heat exchange section 12.

[0220] Specifically, the battery 1000 may include a battery assembly, the battery assembly includes a plurality of battery cells 2011, the battery 1000 may include a plurality of battery cells 2011, and the first heat exchange channel 10 is used to exchange heat with the plurality of battery cells 2011 of the battery 1000, so that the temperature of the battery 1000 can be limited within a safe operating temperature, thereby ensuring the operating reliability of the battery 1000.

[0221] In this embodiment, the second heat exchange section is bent, and the bending form and extension range of the second heat exchange section can be flexibly arranged and adjusted according to the layout needs. For example, the second heat exchange section can be extended into an L shape or a U shape to surround the outer periphery of the first heat exchange section. The second heat exchange section is configured to be opposite to and cooperate with the battery cells located on the peripheral side of the battery assembly for heat exchange. Then, the area enclosed by the second heat exchange section can be opposite to the battery cells in the middle position of the battery. Therefore, the first heat exchange section arranged in the area enclosed by the second heat exchange section can be opposite to and cooperate with the battery cells in the middle position of the battery for heat exchange.

[0222] In this embodiment, the first heat exchange section is bent and arranged in the area surrounded by the second heat exchange section, which is intended to illustrate that the second heat exchange section 12 is arranged on the circumferential periphery of the first heat exchange section 11 and can be arranged on the peripheral side of the first heat exchange section 11. The second heat exchange section 12 can be arranged closer to the peripheral edge of the battery 1000 relative to the first heat exchange section 11.

[0223] The first heat exchange section is bent and arranged in the area surrounded by the second heat exchange section, that is, the first heat exchange section 11 is arranged in the space surrounded by the second heat exchange section 12, and the first heat exchange section 11 extends along a non-straight line on the inner side of the second heat exchange section 12 and has at least one bending position.

[0224] It should be noted that, in this embodiment, the first heat exchange section 11 is only limited to be bent and arranged in the area surrounded by the second heat exchange section, and the bending form of the first heat exchange section 11 is not limited, that is, the specific bending form of the first heat exchange section 11 can be designed according to the heat exchange requirements of the battery 1000. For example, the first heat exchange section 11 can be arranged along the length direction of the battery cell 2011 (that is, Figure 4 The battery cell 2011 extends in the Y1 direction and then extends to a certain length in the width direction of the battery cell 2011 (i.e. Figure 4 Alternatively, the first heat exchange section 11 may extend along the width direction of the battery cell 2011, bend toward the length direction of the battery cell 2011 after extending to a certain length, and then continue to extend along the width direction of the battery cell 2011 and bend along the length direction.

[0225] The first heat exchange section 11 and the second heat exchange section 12 are connected in a bent manner, that is, one end of the first heat exchange section 11 is connected to one end of the second heat exchange section 12, and the connection position between the first heat exchange section 11 and the second heat exchange section 12 is a bent non-linear structure. For example, the connection position between the first heat exchange section 11 and the second heat exchange section 12 can be bent into an arc segment.

[0226] Among them, the first heat exchange section 11 and the second heat exchange section 12 are connected, so that one of the end of the first heat exchange section 11 away from the second heat exchange section 12 and the end of the second heat exchange section 12 away from the first heat exchange section 11 can be used as the liquid inlet end and the other can be used as the liquid outlet end, so that when the first heat exchange channel 10 performs heat exchange, the heat exchange medium can flow from the first heat exchange section 11 to the second heat exchange section 12, and can also flow from the second heat exchange section 12 to the first heat exchange section 11.

[0227] It is understandable that, during the process of the heat exchange fluid flowing in the first heat exchange channel 10, the temperature of the heat exchange fluid gradually changes, resulting in a gradual decrease in the heat exchange effect. For example, when the heat exchange element 100 cools and dissipates heat for the battery assembly 200, the heat of the battery cell 2011 is gradually transferred to the heat exchange fluid, so that the temperature of the heat exchange fluid gradually increases during the process of flowing along the first heat exchange channel 10, the temperature difference between the heat exchange fluid and the battery cell 2011 gradually decreases, and the heat exchange efficiency gradually decreases; when the heat exchange element 100 heats and heats up the battery assembly 200, the heat in the heat exchange fluid is gradually transferred to the battery cell 2011, so that the temperature of the heat exchange fluid gradually decreases during the process of flowing along the first heat exchange channel 10, the temperature difference between the heat exchange fluid and the battery cell 2011 gradually decreases, and the heat exchange efficiency gradually decreases.

[0228] In this embodiment, when the heat exchange element 100 is dissipating heat and cooling the battery assembly 200, the heat exchange fluid can also flow from the first heat exchange section 11 to the second heat exchange section 12, but the heat exchange fluid can also flow from the second heat exchange section 12 to the first heat exchange section 11. When the heat exchange fluid also flows from the first heat exchange section 11 to the second heat exchange section 12, the battery cells 2011 in the middle of the battery 1000 (that is, the internal battery cells 2011 on the inner side of the periphery) can be cooled first, and then the battery cells 2011 at the peripheral position of the battery 1000 can be cooled. Since the heat dissipation of the battery cells 2011 at the peripheral position of the battery 1000 is better than that of the internal battery cells 2011, the heat exchange fluid with a lower temperature in the first heat exchange section 11 can better meet the heat dissipation requirements of the battery cells 2011 in the middle of the battery 1000. At the same time, due to The battery cells 2011 at the peripheral position can dissipate heat naturally directly to the external environment. When the temperature of the heat exchange fluid in the second heat exchange section 12 is slightly higher, it can still meet the heat dissipation needs of the peripheral battery cells 2011, so that the cooling effects obtained by the battery cells 2011 at the peripheral position of the battery 1000 and the battery cells 2011 at the middle position of the battery 1000 are roughly the same, and then the temperatures of the battery cells 2011 at the peripheral position of the battery 1000 and the battery cells 2011 at the middle position of the battery 1000 after cooling and heat dissipation are relatively consistent, making the temperature distribution in the battery 1000 more uniform.

[0229] When the heat exchange element 100 heats the battery assembly 200, the heat exchange fluid may also flow from the first heat exchange section 11 to the second heat exchange section 12, but the heat exchange fluid may also flow from the second heat exchange section 12 to the first heat exchange section 11. Exemplarily, when the heat exchange fluid flows from the second heat exchange section 12 to the first heat exchange section 11, the battery cells 2011 at the periphery of the battery assembly 200 may be heated first, and then the heat exchange fluid may cool the battery cells 2011 at the middle of the battery assembly 200. Since the battery cells 2011 at the periphery of the battery 1000 dissipate more heat to the external environment, the temperature of the battery cells 2011 at the periphery of the battery 1000 is more likely to drop. The heat exchange fluid may first heat the battery cells 2011 at the periphery of the battery 1000. The higher temperature heat exchange fluid may increase the temperature of the battery cells 2011 at the periphery while compensating for the heat lost by the battery cells 2011 due to heat dissipation to the external environment. To meet its heating needs, the battery cells 2011 in the middle of the battery assembly 200 have a small contact area with the external environment and less heat loss. The lower temperature heat exchange fluid flowing in the first heat exchange section 11 can cooperate with the heat generated by the battery cells 2011 themselves to meet its heating needs. As a result, the heating effects obtained by the battery cells 2011 on the periphery of the battery 1000 and the battery cells 2011 in the middle of the battery assembly 200 are basically the same, and the temperatures of the battery cells 2011 on the periphery of the battery 1000 and the battery cells 2011 in the middle of the battery assembly 200 after heating are relatively consistent, making the temperature distribution in the battery 1000 more uniform.

[0230] In the above-mentioned embodiment, the second heat exchange section 12 is bent and arranged, and the first heat exchange section 11 is bent and arranged in the area surrounded by the second heat exchange section 12. When the heat exchange element 100 exchanges heat with the battery assembly 200, the outer second heat exchange section 12 can be opposite to the outer battery cells of the battery, and the first heat exchange section 11 can be opposite to the internal battery cells, so that the heat exchange element 100 can make up for the internal and external temperature difference caused by the heat exchange between the outer battery cells 2011 and the environment, so that the heat exchange effect of the battery cells 2011 on the periphery of the battery assembly 200 and the battery cells 2011 inside the battery assembly 200 tend to be consistent, thereby improving the temperature uniformity of the battery 1000, thereby improving the service life of the battery 1000 to a certain extent.

[0231] In some embodiments, reference Fig.29 As shown, Fig.29It is a schematic diagram of the arrangement of the heat exchange component 100 and the battery assembly 200 according to an embodiment of the present application. The second heat exchange section 12 may include: a first flow channel portion 1201 and a second flow channel portion 1202, the first flow channel portion 1201 extends along a first direction and its two ends are respectively connected to the first heat exchange section 11 and the second flow channel portion 1202, the second flow channel portion 1202 extends along a second direction, and the first direction intersects the second direction, wherein at least one of the first flow channel portion 1201 and the second flow channel portion 1202 is configured to be opposite to the battery cell 2011 and cooperate in heat exchange.

[0232] In this embodiment, the second heat exchange section 12 includes a first flow channel portion 1201 and a second flow channel portion 1202 that are connected. The first flow channel portion 1201 extends along the first direction, and both ends are respectively connected to the first heat exchange section 11 and the second flow channel portion 1202. The second flow channel portion 1202 extends along the second direction. The first flow channel portion 1201 can be arranged on one side of the battery 1000 in the second direction, and the second flow channel portion 1202 can be arranged on one side of the battery 1000 in the first direction. The first flow channel portion 1201 can be opposite to and heat-exchange with the peripheral battery cells 2011 of the battery 1000. The first flow channel portion 1201 can also be arranged on the outside of the battery 1000 in the second direction. The second flow channel portion 1202 can also be opposite to and heat-exchange with the peripheral battery cells 2011 of the battery 1000. The second flow channel portion 1202 can also be arranged on the outside of the battery 1000 in the first direction.

[0233] The second heat exchange section 12 can form an L-shaped flow channel structure by the arrangement of the first flow channel portion 1201 and the second flow channel portion 1202. The first heat exchange section 11 is arranged on the side of the first flow channel portion 1201 facing the middle position of the battery 1000 in the second direction, and on the side of the second flow channel portion 1202 facing the middle position of the battery 1000 in the first direction. When the heat exchange element 100 performs heat exchange, the heat exchange fluid can flow along the second flow channel portion 1202 in the second direction, and then flow along the first flow channel portion 1201 in the first direction. , the heat exchange fluid then flows from the first flow channel portion 1201 to the first heat exchange section 11. When the first flow channel portion 1201 and the second flow channel portion 1202 of the second heat exchange section 12 are both opposite to the battery cell 2011 and cooperate in heat exchange, the second heat exchange section 12 can perform heat exchange operations with the peripheral battery cells 2011 of the battery 1000 in the first direction and the second direction. After the heat exchange fluid exchanges heat with the peripheral battery cells 2011, it flows into the first heat exchange section 11 and continues to exchange heat for the battery cells 2011 in the middle position of the battery 1000.

[0234] When one of the first flow channel portion 1201 and the second flow channel portion 1202 is not opposite to the battery cell 2011 and cooperates with heat exchange, for example, when the second flow channel portion 1202 is arranged on the outside of the battery 1000, the arrangement of the second flow channel portion 1202 does not need to consider the arrangement position of the battery cell 2011, and the second flow channel portion 1202 can be more conveniently adjusted in position and extended in length as needed, so that the heat exchange component 100 can be more conveniently arranged in coordination with external structural components to a certain extent, and the second flow channel portion 1202 can also be used for heat exchange of other components as needed, thereby expanding the use of the heat exchange component 100 and making comprehensive use of the heat exchange component 100.

[0235] In the present embodiment, the second heat exchange section 12 is configured to include a first flow channel portion 1201 and a second flow channel portion 1202. At least one of the first flow channel portion 1201 and the second flow channel portion 1202 is opposite to the battery cell 2011 and cooperates in heat exchange. The structure is simple, and the second heat exchange section 12 can be arranged as needed while meeting the heat exchange needs of the battery assembly 200, making the arrangement of the second heat exchange section 12 more flexible and making it more convenient to assemble and arrange the heat exchange component 100 in the battery 1000.

[0236] In one embodiment, reference Fig.29 As shown, the first flow channel portion 1201 is configured to be opposite to the battery cell 2011 ( 2011 ) and to cooperate with the heat exchange, and the second flow channel portion 1202 is configured to be arranged on the outside of the battery assembly 200 .

[0237] In this embodiment, the first flow channel portion 1201 is opposite to the battery cell 2011 and cooperates with heat exchange, and the second flow channel portion 1202 is arranged on the outside of the battery assembly 200. Then, when the heat exchange element 100 exchanges heat, the heat exchange fluid does not exchange heat with the battery cell 2011 when flowing in the second flow channel portion 1202. When the heat exchange fluid flows into the first flow channel portion 1201, it starts to exchange heat with the battery cell 2011.

[0238] In this embodiment, the first flow channel portion 1201 is set to be opposite to the battery cell 2011 and cooperate with the heat exchange, and can cooperate with the first heat exchange section 11 to perform heat exchange operations from the peripheral battery cells 2011 of the battery 1000 to the middle battery cells 2011 in the second direction, thereby better meeting the need to improve the heat exchange uniformity of the battery 1000. The second flow channel portion 1202 is arranged on the outside of the battery assembly 200, which can make the second flow channel portion 1202 convenient to set up and arrange in the battery 1000. The heat exchange fluid flowing in the second flow channel portion 1202 can be used for heat exchange of other components, thereby making the use range of the heat exchange component 100 wider and more effective.

[0239] In some examples, such as Fig.29As shown, the housing 300 of the battery 1000 defines a battery compartment and an electrical compartment that are spaced apart, and the second flow channel portion 1202 is configured to at least partially extend into the electrical compartment.

[0240] In this embodiment, the box body 300 of the battery 1000 defines a battery compartment and an electrical compartment, the battery compartment can accommodate multiple battery cells 2011 of the battery 1000, and the first heat exchange section 11 and part of the second heat exchange section 12 of the heat exchange element 100 can be arranged in the battery compartment to cooperate with the battery cells 2011 for heat exchange. The electrical compartment can be used to accommodate other electrical components in the battery 1000, such as a high-voltage box, a controller, a converter, and the like.

[0241] In this embodiment, the second flow channel at least partially extends into the electrical compartment. When the heat exchange element 100 is in operation, the heat exchange fluid can first pass through the electrical compartment along the second flow channel portion 1202 and then flow into the battery compartment, and then flow to the first flow channel portion 1201 and the first heat exchange section 11 to exchange heat with the battery cell 2011.

[0242] It is understandable that the electrical components in the electrical compartment need to be in a suitable temperature environment during operation, and some electrical components will generate more heat during operation. In this embodiment, at least a portion of the second flow channel portion 1202 is extended into the electrical compartment, and the heat exchange fluid flowing through the second flow channel portion 1202 can exchange heat with the heat in the electrical compartment, thereby exchanging heat with the electrical components in the electrical compartment. The heat exchange operation of the second flow channel portion 1202 in the electrical compartment can form a stable and good operating environment, thereby making the battery 1000 operate more stably.

[0243] In this embodiment, at least a portion of the second flow channel portion 1202 extends into the electrical compartment, so that the electrical components in the electrical compartment can use the heat exchange element 100 to perform heat exchange operations, so that the heat exchange element 100 can simultaneously perform heat exchange on the battery cells 2011 and the electrical components, making the heat exchange element 100 more widely used.

[0244] In one example, the second flow channel portion 1202 is configured to be opposite to and heat-exchange-matched with a high-voltage box in an electrical compartment.

[0245] In this embodiment, the second flow channel portion 1202 is opposite to the high-voltage box in the electrical compartment and cooperates with heat exchange. The high-voltage box may refer to a high-voltage distribution box. The high-voltage box will generate more heat during operation, which will increase the temperature in the electrical compartment, thereby possibly reducing the operating stability of the high-voltage box and other electrical components.

[0246] In this embodiment, the second flow channel portion 1202 is configured to be opposite to the high-pressure box and cooperate with the heat exchange, so that the second flow channel portion 1202 can provide a good heat exchange effect for the operation of the high-pressure box, thereby allowing the high-pressure box to operate more stably.

[0247] According to some embodiments of the present application, Figure 4 As shown, the second heat exchange section 12 may be located at the outermost side of the first heat exchange channel 10 in the circumferential direction.

[0248] That is to say, the second heat exchange section 12 is formed as the outermost flow channel of the first heat exchange flow channel 10. In this way, the second heat exchange section 12 can be used to exchange heat with the battery cells 2011 around the battery 1000, thereby improving the temperature uniformity of the battery cells 2011 around the battery 1000.

[0249] In the above-mentioned embodiment, by arranging the second heat exchange section 12 at the outermost side of the first heat exchange channel 10 in the circumferential direction, the second heat exchange section 12 can exchange heat with the battery cells 2011 on the outer circumference of the battery assembly 200, which is beneficial to improving the temperature difference between the inside and outside of the battery assembly 200 caused by heat exchange with the environment, thereby improving the service life of the battery assembly 200 to a certain extent.

[0250] According to some embodiments of the present application, the first heat exchange section 11 and the second heat exchange section 12 can be bent in the same plane.

[0251] In the above-mentioned embodiment, by setting the first heat exchange section 11 and the second heat exchange section 12 to bend in the same plane, the first heat exchange channel 10 can exchange heat for the battery 1000 in the same plane. Therefore, the structure of the first heat exchange channel 10 can be simplified, and the production difficulty of the first heat exchange channel 10 can be reduced. At the same time, the space occupied by the first heat exchange channel 10 can be reduced, and the volume energy density of the battery 1000 can be improved.

[0252] According to some embodiments of the present application, Figure 4-Figure 5 As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111 , and the plurality of first heat exchange parts 111 are arranged at intervals and are bent and connected in sequence.

[0253] That is, the plurality of first heat exchange parts 111 are connected in sequence, and the connection position of two connected first heat exchange parts 111 is bent. For example, the two connected first heat exchange parts 111 can be bent along a fold line or along an arc line. The number of the first heat exchange parts 111 can be two, three, four, five or more.

[0254] It should be noted that the shape of the first heat exchange portion 111 can be various, for example, the first heat exchange portion 111 can be straight or arc-shaped. The extension direction of the first heat exchange portion 111 can also be various, for example, it can extend along the length direction or thickness direction of the battery cell 2011. In this way, multiple first heat exchange portions 111 are bent and connected in sequence, so that the first heat exchange section 11 can form an S-shaped, X-shaped, V-shaped, etc. heat exchange flow channel.

[0255] In the above embodiment, on the one hand, by setting up a plurality of first heat exchange parts 111, the heat exchange area of ​​the first heat exchange section 11 can be increased, and then the heat exchange area of ​​the first heat exchange channel 10 can be increased, thereby improving the heat exchange effect of the first heat exchange channel 10; on the other hand, since the internal battery cells are wrapped by the external battery cells, the temperature difference between the internal battery cells is not large. Therefore, by setting up a plurality of first heat exchange parts 111, the overall heat exchange effect can be guaranteed while ensuring that the temperature difference between the internal and external battery cells is small.

[0256] According to some embodiments of the present application, Figure 4 As shown, the plurality of first heat exchange parts 111 are arranged along a first direction (ie Figure 4 The Y1 direction shown in the figure) is arranged at intervals, and each first heat exchange part 111 is arranged along the second direction (that is, Figure 4 The first direction extends in a straight line (in the X1 direction shown), and the first direction and the second direction are set at an angle.

[0257] The phrase “the first direction and the second direction are arranged at an angle” is intended to explain that the first direction and the second direction may be arranged perpendicularly or intersectingly and non-perpendicularly. For example, the first direction and the second direction may be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°. Figure 4 As shown, the first direction is the length direction of the battery cell 2011, and the second direction is the thickness direction of the battery cell 2011. The first heat exchange parts 111 extend along the length direction of the battery cell 2011 and are arranged at intervals along the thickness direction of the battery cell 2011. In this way, multiple first heat exchange parts 111 are bent and connected to form an S-shaped heat exchange channel, which can realize heat exchange for multiple battery cells 2011.

[0258] In the above-mentioned embodiment, by setting the first heat exchange part 111 to extend straightly along the second direction, the production difficulty of the first heat exchange part 111 can be reduced, and the production complexity of the first heat exchange channel 10 can be reduced. At the same time, the straight tube can also increase the flow rate of the heat exchange fluid, thereby improving the heat exchange effect of the first heat exchange channel 10.

[0259] According to some embodiments of the present application, Figure 4 As shown, the first heat exchange section 11 may further include: a first bending portion 112 , the first bending portion 112 is arc-shaped, and is bent and connected between two adjacent first heat exchange portions 111 .

[0260] Among them, the first bending portion 112 is arc-shaped, that is, the first bending portion 112 extends along the arc line, and the fluid flow direction at both ends of the first bending portion 112 has a certain angle, thereby, the first bending portion 112 can change the flow direction of the fluid, and then the two connected first heat exchange parts 111 can be extended and arranged in a preset area, thereby increasing the heat exchange area of ​​the first heat exchange section 11 and improving the heat exchange efficiency of the first heat exchange section 11. At the same time, the first bending portion 112 is arc-shaped, wherein the arc line shape can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the fluid and further increasing the heat exchange efficiency of the first heat exchange section 11.

[0261] Furthermore, the number of the first bending portions 112 can be one, two, three or more. The first bending portions 112 can make the first heat exchange section 11 arranged in a circuitous manner, thereby increasing the heat exchange area of ​​the first heat exchange channel 10 and improving the heat exchange efficiency of the first heat exchange channel 10.

[0262] In the above-mentioned embodiment, by setting the first bending portion 112, the fluid flow direction inside the first heat exchange section 11 can be changed, and the two first heat exchange sections 111 can be smoothly connected to each other, and the first heat exchange channel 10 can be extended in a circuitous manner, thereby increasing the contact area between a single battery cell and the first heat exchange channel 10, thereby increasing the heat exchange area and improving the heat exchange efficiency of the first heat exchange channel 10; at the same time, the first bending portion 112 is arc-shaped, which can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the fluid and further increasing the heat exchange efficiency of the first heat exchange section 11. In addition, by setting the first bending portion 112, the structure of the first heat exchange section 11 is also made more compact, and the overall space occupied is smaller, which is more conducive to realizing the miniaturized design of the battery 1000 and ensuring the volume energy density of the battery 1000.

[0263] According to some embodiments of the present application, Figure 4 As shown, the first bending portion 112 may be in a semicircular arc shape.

[0264] That is to say, the first bending portion 112 can extend along a semicircular arc line. Specifically, the first bending portion 112 can extend along a semicircular arc line that is raised in the direction away from the two first heat exchange portions 111 connected by the first bending portion 112. The angle between the inlet and outlet of the first bending portion 112 is 180°, and the flow directions at the outlet and inlet positions of the first bending portion 112 are opposite, so that the two adjacent first heat exchange portions 111 are closer, and the structure of the entire first heat exchange section 11 is more compact and reliable. Among them, the first bending portion 112 is used to connect two first heat exchange portions 111 that are parallel to each other and arranged at intervals. In other embodiments, the bending degree of the first bending portion 112 can also be adjusted according to needs, for example, it can be 150°, 135°, etc., and the embodiments of the present application are not limited thereto.

[0265] The two first heat exchange parts 111 are connected through the first bending part 112 to form a "U"-shaped heat exchange channel. The first heat exchange section 11 may include one or more "U"-shaped heat exchange channels. Multiple "U"-shaped heat exchange channels are connected in sequence, and the connected "U"-shaped heat exchange channels are connected through the first bending part 112.

[0266] In the above-mentioned embodiment, by setting the first bending portion 112 to be semicircular, the design diversity of the heat exchange flow channel can be increased, thereby improving the compatibility of the heat exchange component 100 and the battery 1000; at the same time, the semicircular structure is relatively simple, thereby reducing the difficulty of producing the heat exchange component 100 and improving the production speed of the heat exchange component 100.

[0267] In some embodiments, Figure 4 As shown, the second heat exchange section may be bent to form a U-shaped area, and the first heat exchange section is bent and arranged in the U-shaped area.

[0268] The above “the second heat exchange section 12 is bent to form a U-shaped area 120, and the first heat exchange section 11 is bent and arranged in the U-shaped area 120” is intended to illustrate that the second heat exchange section 12 is arranged at the circumferential periphery of the first heat exchange section 11, and can be arranged on three circumferential sides of the first heat exchange section 11. The second heat exchange section 12 can be arranged closer to the peripheral position of the battery 1000 relative to the first heat exchange section 11.

[0269] The second heat exchange section 12 is bent to form a U-shaped area 120 , that is, in a direction from one end of the second heat exchange section 12 toward the other end, the second heat exchange section 12 extends along a U-shaped line to form a U-shaped area 120 .

[0270] The first heat exchange section 11 is bent and disposed in the U-shaped area 120 , that is, the first heat exchange section 11 is arranged in the space enclosed by the second heat exchange section 12 , and the first heat exchange section 11 extends along a non-straight line on the inner side of the second heat exchange section 12 , and has at least one bending position.

[0271] In this embodiment, the second heat exchange section 12 is bent to form a U-shaped area 120, and the first heat exchange section 11 is bent and arranged in the U-shaped area 120. When the heat exchange component 100 exchanges heat with the battery assembly 200, the U-shaped area 120 formed by the outer second heat exchange section 12 can be opposite to the outer battery cells of the battery, and the first heat exchange section 11 in the U-shaped area 120 can be opposite to the internal battery cells, so that the heat exchange component 100 can make up for the internal and external temperature difference caused by the heat exchange between the outer battery cells 2011 and the environment, so that the heat exchange effect of the battery cells 2011 outside the battery assembly 200 and the battery cells 2011 inside the battery assembly 200 tend to be consistent, thereby improving the temperature uniformity of the battery 1000, thereby improving the service life of the battery 1000 to a certain extent.

[0272] According to some embodiments of the present application, Figure 4 As shown, the second heat exchange section 12 may include: a second heat exchange part 121, a third heat exchange part 122 and a fourth heat exchange part 125, the second heat exchange part 121 extends along the first side circumference of the first heat exchange section 11, the third heat exchange part 122 is connected between the second heat exchange part 121 and the first heat exchange section 11, and extends along the second side circumference of the first heat exchange section 11, the first end of the third heat exchange part 122 is connected to the second heat exchange part 121 at an angle, and the second end of the third heat exchange part 122 is connected to the first heat exchange section 11 at an angle; the fourth heat exchange part 125 is in communication with the second heat exchange part 121, is connected to the second heat exchange part 121 at an angle, and extends along the third side circumference of the first heat exchange section 11.

[0273] It can be understood that the fourth heat exchange part 125 is connected to the end of the second heat exchange part 121 away from the third heat exchange part 122, the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 are connected in sequence to form a U-shaped area 120, and the first heat exchange section 11 is arranged in the U-shaped area 120 and is connected to the end of the third heat exchange part 122 away from the second heat exchange part 121.

[0274] The first end of the third heat exchange part 122 is connected to the second heat exchange part 121 at an angle, that is, the third heat exchange part 122 is connected to the second heat exchange part 121, and the third heat exchange part 122 and the second heat exchange part 121 are not collinear or parallel, but are arranged at an angle greater than 0° and less than 180°. For example, the third heat exchange part 122 is connected to the second heat exchange part 121 and the angle is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0275] The second end of the third heat exchange part 122 is connected to the first heat exchange section 11 at an angle; that is, the second end of the third heat exchange part 122 is connected to the second heat exchange part 121, and the second end of the third heat exchange part 122 is arranged at an angle greater than 0° and less than 180° to the first heat exchange section 11. For example, the second end of the third heat exchange part 122 is connected to the first heat exchange section 11 and the angle is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0276] The fourth heat exchange part 125 is in communication with the second heat exchange part 121 and is connected to the second heat exchange part 121 at an angle, that is, the fourth heat exchange part 125 is connected to the second heat exchange part 121 and is arranged at an angle greater than 0° and less than 180°. For example, the fourth heat exchange part 125 is connected to the second heat exchange part 121 and the angle is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0277] It should be noted that, this embodiment limits the second heat exchange section 12 to be arranged on three sides of the circumference of the first heat exchange section 11, and does not limit the specific positions of the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125 relative to the first heat exchange section 11. Therefore, the specific positions of the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125 can be designed according to actual conditions. For example, if the second heat exchange section 121 can be arranged on one side of the first heat exchange section 11 in the first direction, the third heat exchange section 122 and the fourth heat exchange section 125 are respectively arranged on both sides of the first heat exchange section 11 in the second direction; if the second heat exchange section 121 is arranged on one side of the first heat exchange section 11 in the second direction, the third heat exchange section 122 and the fourth heat exchange section 125 are respectively arranged on both sides of the first heat exchange section 11 in the first direction.

[0278] In the above-mentioned embodiment, by arranging the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125 on three sides of the first heat exchange section 11 respectively, the second heat exchange section 12 can surround the first heat exchange section 11, thereby increasing the compactness of the arrangement of the first heat exchange channel 10, realizing the miniaturization of the structure of the first heat exchange channel 10, which is beneficial to improving the volume energy density of the battery 1000. At the same time, the structure of the first heat exchange channel 10 can also be simplified, and the processing and production of the heat exchange component 100 can be facilitated.

[0279] According to some embodiments of the present application, Figure 4As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, and the plurality of first heat exchange parts 111 are bent and connected in sequence in the first direction; wherein, the second heat exchange part 121 is located on one side of the plurality of first heat exchange parts 111 along the first direction, and the third heat exchange part 122 is located on one side of the plurality of first heat exchange parts 111 along the second direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange part 122 is connected to one end of the second heat exchange part 121 along the second direction, and a second end of the third heat exchange part 122 is connected to one of the plurality of first heat exchange parts 111 that is farthest from the second heat exchange part 121 along the first direction, and a fourth heat exchange part 125 is located on the other side of the plurality of first heat exchange parts 111 along the second direction, and one end of the fourth heat exchange part 125 is connected to one end of the second heat exchange part 121 away from the third heat exchange part 122, and the other end of the fourth heat exchange part 125 extends along the first direction toward a direction away from the second heat exchange part 121.

[0280] The plurality of first heat exchange parts 111 are bent and connected in sequence in the first direction, that is, the plurality of first heat exchange parts 111 are arranged in sequence in the first direction, and in the first direction, two adjacent and connected first heat exchange parts 111 are bent and connected. The first heat exchange parts 111 may extend along a straight line parallel to the second direction, the first heat exchange parts 111 may extend along a straight line arranged at an angle to the second direction, and the first heat exchange parts 111 may extend along a curve and / or a broken line in the second direction.

[0281] It can be understood that the fourth heat exchange part 125, the second heat exchange part 121, the third heat exchange part 122 and the first heat exchange part 111 farthest from the second heat exchange part 121 are connected in sequence, and the multiple first heat exchange parts 111 are arranged at intervals along the first direction and connected in sequence. In this way, the heat exchange fluid can flow through the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 in sequence, and then enter the first heat exchange section 11. In the first heat exchange section 11, the fluid first passes through the first heat exchange part 111 farthest from the second heat exchange part 121, and finally flows to the first heat exchange part 111 closest to the second heat exchange part 121; or, the heat exchange fluid can first flow into the first heat exchange section 11. In the first heat exchange section 11, the fluid first flows through the first heat exchange part 111 closest to the second heat exchange part 121, flows out from the first heat exchange part 111 farthest from the second heat exchange part 121, and then flows through the second heat exchange part 121 and the fourth heat exchange part 125 in sequence through the third heat exchange part 122.

[0282] In addition, “the first direction and the second direction are arranged at an angle” is intended to illustrate that the first direction and the second direction can be arranged vertically, or can be arranged non-vertically so as to only intersect. For example, the first direction and the second direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0283] For example Figure 4 As shown, the first direction may be the length direction of the battery cell 2011, that is, Figure 4 The second direction is the thickness direction of the battery cell 2011, that is, Figure 4 The X1 direction shown. Taking the first heat exchange channel 10 arranged in the Y1 direction away from the coordinate origin as an example, the first heat exchange part 111 extends straight along the X1 direction, and the plurality of first heat exchange parts 111 are arranged at intervals in the Y1 direction. The second heat exchange part 121 is arranged on the side of the plurality of first heat exchange parts 111 away from the coordinate origin in the Y1 direction and extends straight in the X1 direction, and is used to exchange heat with the edge of the battery assembly 200 away from the coordinate origin in the Y1 direction. The third heat exchange part 122 is arranged on the side of the plurality of first heat exchange parts 111 close to the coordinate origin in the X1 direction and extends straight in the Y1 direction. The third heat exchange part 122 is used to exchange heat with the edge of the battery assembly 200 close to the coordinate origin in the X1 direction. The fourth heat exchange part 125 is arranged on the side of the plurality of first heat exchange parts 111 away from the coordinate origin in the X1 direction and extends straight in the Y1 direction. The fourth heat exchange part 125 can be used to exchange heat with the edge of the battery assembly 200 away from the coordinate origin in the X1 direction.

[0284] In the above-mentioned embodiment, a plurality of first heat exchange parts 111 are provided to be bent and connected in sequence in the first direction, the second heat exchange part 121 is located on one side of the plurality of first heat exchange parts 111 along the first direction, the third heat exchange part 122 is located on one side of the plurality of first heat exchange parts 111 along the second direction, and the fourth heat exchange part 125 is located on the other side of the plurality of first heat exchange parts 111 along the second direction. The positional relationship among the second heat exchange part 121, the third heat exchange part 122, the fourth heat exchange part 125 and the first heat exchange part 111 is limited, the layout of the first heat exchange channel 10 is further limited, the structure of the first heat exchange channel 10 is simplified, and the processing and manufacturing are facilitated.

[0285] According to some specific embodiments of the present application, Figure 4 As shown, the third heat exchange portion 122 and the fourth heat exchange portion 125 are arranged along a first direction (eg Figure 4 The first heat exchange portion 111 and the second heat exchange portion 121 are both extended along the second direction.

[0286] Furthermore, the third heat exchange portion 122 and the fourth heat exchange portion 125 can both extend in a straight line along the first direction, and the first heat exchange portion 111 and the second heat exchange portion 121 can both extend in a straight line along the second direction. The linear structure is simple, convenient to produce, and easy to arrange, thereby further reducing the production complexity and production cost of the first heat exchange channel 10.

[0287] In the above-mentioned embodiment, by arranging the third heat exchange part 122 and the fourth heat exchange part 125 to extend along the first direction, the first heat exchange part 111 and the second heat exchange part 121 are both extended along the second direction, which can be beneficial to the circuitous arrangement of the first heat exchange channel 10, thereby reducing the production difficulty of the first heat exchange channel 10 and reducing the production cost of the heat exchange component 100.

[0288] According to some examples of this application, such as Figure 4 As shown, the third heat exchange portion 122 and the fourth heat exchange portion 125 are both extended along the first direction. In the first direction, the length b1 of the fourth heat exchange portion 125 is less than or equal to the length a1 of the third heat exchange portion 122 .

[0289] When the length b1 of the fourth heat exchange portion 125 is equal to the length a1 of the third heat exchange portion 122, the fourth heat exchange portion 125, the second heat exchange portion 121 and the third heat exchange portion 122 are sequentially connected to form a standard U-shaped flow channel; when the length b1 of the fourth heat exchange portion 125 is less than the length a1 of the third heat exchange portion 122, it is beneficial to avoid other flow channel sections of the first heat exchange flow channel 10 (for example, avoiding Figure 4 The first inlet and outlet section 15 shown in the figure avoids other heat exchange channels or other components, which is beneficial to the layout of the first heat exchange channel 10 and the compact structure.

[0290] In the above-mentioned embodiment, by setting the length of the fourth heat exchange part 125 equal to the length of the third heat exchange part 122, the sizes of the two ends of the U-shaped region 120 can be made close, which is beneficial to controlling the temperature difference of the battery cells 2011 at both ends of the battery assembly 200 in the second direction, and improving the temperature uniformity of the battery assembly 200; by setting the length of the fourth heat exchange part 125 to be smaller than the length of the third heat exchange part 122 in the first direction, it is convenient to connect the fourth heat exchange part 125 to the collector, and it is also possible to make the fourth heat exchange part 125 avoid other channel sections, other channel structures or other components of the first heat exchange channel 10.

[0291] According to some specific embodiments of the present application, Figure 4 As shown, the fourth heat exchange portion 125 extends along the first direction and extends to a position close to one of the plurality of first heat exchange portions 111 that is farthest from the second heat exchange portion 121 .

[0292] Specifically, the fourth heat exchange part 125 extends along the first direction, one end of the fourth heat exchange part 125 is connected to the second heat exchange part 121, and the other end of the fourth heat exchange part 125 extends to a position close to one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121, that is, the other end of the fourth heat exchange part 125 extends to be flush with the first heat exchange part 111 that is farthest from the second heat exchange part 121, or, the other end of the fourth heat exchange part 125 extends to be close to the first heat exchange part 111 that is farthest from the second heat exchange part 121, or, the other end of the fourth heat exchange part 125 extends to exceed the first heat exchange part 111 that is farthest from the second heat exchange part 121.

[0293] In this way, the length of the fourth heat exchange part 125 can be increased, the heat exchange area between the fourth heat exchange part 125 and the battery assembly 200 can be increased, the heat exchange effect of the heat exchange element 100 is further improved, and it is also beneficial to the layout of the first heat exchange channel 10.

[0294] In the above-mentioned embodiment, by setting the fourth heat exchange part 125 to extend along the first direction and extend to a position close to one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121, the heat exchange area of ​​the fourth heat exchange part 125 can be increased, so that the first heat exchange channel 10 can exchange heat with the multiple battery cells 2011 arranged corresponding to the first heat exchange channel 10 as much as possible, thereby improving the comprehensiveness of heat exchange of the first heat exchange channel 10, and further improving the heat exchange effect of the battery 1000.

[0295] According to some embodiments of the present application, Figure 6 As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, and the plurality of first heat exchange parts 111 are bent and connected in sequence in the first direction; wherein, the second heat exchange part 121 is located on one side of the plurality of first heat exchange parts 111 along the second direction, and the third heat exchange part 122 is located on one side of the plurality of first heat exchange parts 111 along the first direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange part 122 is connected to one end of the second heat exchange part 121 along the first direction, and a second end of the third heat exchange part 122 is connected to one of the plurality of first heat exchange parts 111 that is closest to the third heat exchange part 122 along the first direction, and a fourth heat exchange part 125 is located on the other side of the plurality of first heat exchange parts 111 along the first direction, and one end of the fourth heat exchange part 125 is connected to one end of the second heat exchange part 121 away from the third heat exchange part 122, and the other end of the fourth heat exchange part 125 extends along the second direction toward a direction away from the second heat exchange part 121.

[0296] The plurality of first heat exchange parts 111 are bent and connected in sequence in the first direction, that is, the plurality of first heat exchange parts 111 are arranged in sequence in the first direction, and in the first direction, two adjacent and connected first heat exchange parts 111 are bent and connected. The first heat exchange parts 111 may extend along a straight line parallel to the second direction, the first heat exchange parts 111 may extend along a straight line arranged at an angle to the second direction, and the first heat exchange parts 111 may extend along a curve and / or a broken line in the second direction.

[0297] It can be understood that the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 are connected in sequence with the first heat exchange part 111 closest to the third heat exchange part 122, and the multiple first heat exchange parts 111 are arranged at intervals along the first direction and connected in sequence. In this way, the heat exchange fluid can flow through the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 in sequence, and then enter the first heat exchange section 11. In the first heat exchange section 11, the fluid first passes through the first heat exchange part 111 closest to the third heat exchange part 122, and finally flows to the first heat exchange part 111 farthest from the third heat exchange part 122; or, the heat exchange fluid can first flow into the first heat exchange section 11. In the first heat exchange section 11, the fluid first flows through the first heat exchange part 111 farthest from the third heat exchange part 122, flows out from the first heat exchange part 111 closest to the third heat exchange part 122, and then flows through the second heat exchange part 121 and the fourth heat exchange part 125 in sequence through the third heat exchange part 122.

[0298] In addition, “the first direction and the second direction are arranged at an angle” is intended to illustrate that the first direction and the second direction can be arranged vertically, or can be arranged non-vertically so as to only intersect. For example, the first direction and the second direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0299] For example Figure 6 As shown, the first direction may be the length direction of the battery cell 2011, that is, Figure 6 The second direction is the thickness direction of the battery cell 2011, that is, Figure 6The direction of X1 shown, wherein, taking the first heat exchange flow channel 10 arranged in the Y1 direction away from the coordinate origin in the figure as an example, the first heat exchange part 111 extends in a straight line along the X1 direction, and the multiple first heat exchange parts 111 are arranged at intervals in the Y1 direction. The second heat exchange part 121 is arranged on the side of the multiple first heat exchange parts 111 along the X1 direction close to the coordinate origin and extends in a straight line in the Y1 direction, and is used to exchange heat with the edge of the side of the battery assembly 200 close to the coordinate origin in the X1 direction. The third heat exchange part 122 is arranged on the side of the multiple first heat exchange parts 111 along the Y1 direction away from the coordinate origin and extends in a straight line in the X1 direction. The third heat exchange part 122 is used to exchange heat with the edge of the side of the battery assembly 200 in the Y1 direction away from the coordinate origin. The fourth heat exchange part 125 is arranged on the side of the multiple first heat exchange parts 111 along the Y1 direction close to the coordinate origin and extends in a straight line in the X1 direction, and can be used to exchange heat with the edge of the side of the battery assembly 200 close to the coordinate origin in the Y1 direction.

[0300] In the above-mentioned embodiment, by arranging the second heat exchange part 121 to be located on one side of the plurality of first heat exchange parts 111 along the second direction, the third heat exchange part 122 to be located on one side of the plurality of first heat exchange parts 111 along the first direction, and the fourth heat exchange part 125 to be located on the other side of the plurality of first heat exchange parts 111 along the first direction, another layout of the first heat exchange channel 10 is defined, thereby increasing the diversity of the first heat exchange channel 10 so that it can meet the heat exchange requirements of different batteries 1000, simplifying the structure of the first heat exchange channel 10, and facilitating processing and manufacturing.

[0301] According to some specific embodiments of the present application, Figure 6 As shown, the first heat exchange portion 111, the third heat exchange portion 122 and the fourth heat exchange portion 125 are arranged along the second direction (eg Figure 6 The second heat exchange portion 121 extends in the first direction (eg, Figure 6 The Y1 direction shown in the figure extends.

[0302] Furthermore, the first heat exchange portion 111, the third heat exchange portion 122 and the fourth heat exchange portion 125 extend linearly along the second direction, and the second heat exchange portion 121 extends linearly along the first direction. The linear structure is simple, convenient to produce, and easy to arrange, thereby further reducing the production complexity and production cost of the first heat exchange channel 10.

[0303] In the above-mentioned embodiment, by arranging the first heat exchange part 111, the third heat exchange part 122 and the fourth heat exchange part 125 to extend along the second direction, and the second heat exchange part 121 to extend along the first direction, it can be beneficial to the circuitous arrangement of the first heat exchange channel 10, thereby reducing the production difficulty of the first heat exchange channel 10 and reducing the production cost of the heat exchange component 100; at the same time, through such an arrangement, the structure of the first heat exchange channel 10 is also made more compact and reliable.

[0304] According to some examples of this application, such as Figure 6 As shown, the first heat exchange portion 111 and the third heat exchange portion 122 extend along the second direction, the second heat exchange portion 121 extends along the first direction, and in the second direction, the length a2 of the third heat exchange portion 122 is greater than or equal to the length c1 of the first heat exchange portion 111 .

[0305] In the above-mentioned embodiment, by setting the length a2 of the third heat exchange part 122 in the second direction to be greater than the length c1 of the first heat exchange part 111, the first heat exchange section 11 can be enclosed in the U-shaped area 120 of the second heat exchange section 12, the length of the third heat exchange part 122 is increased, the heat exchange area of ​​the third heat exchange part 122 is increased, and the second heat exchange section 12 can enclose a larger U-shaped area 120, thereby improving the heat exchange effect of the heat exchange component 100; by setting the length a2 of the third heat exchange part 122 equal to the length c1 of the first heat exchange part 111, the length dimensions of the third heat exchange part 122 extending along the second direction of the first heat exchange channel 10 and the multiple first heat exchange parts 121 can be close, which is beneficial to controlling the temperature difference of the battery assembly 200 along the first direction and improving the temperature uniformity of the battery assembly 200.

[0306] According to some embodiments of the present application, Figure 4 As shown, the second heat exchange section 12 may also include: a second bending portion 123 and a third bending portion 124, the second bending portion 123 and the third bending portion 124 are both arc-shaped, and the second bending portion 123 is connected between the first end of the third heat exchange portion 122 and the second heat exchange portion 121, and the third bending portion 124 is connected between the second end of the third heat exchange portion 122 and the first heat exchange portion 111.

[0307] Among them, the second bending portion 123 and the third bending portion 124 are respectively used to connect the second heat exchange portion 121 and the third heat exchange portion 122 and the third heat exchange portion 122 and the first heat exchange portion 111, the second bending portion 123 is arc-shaped, that is, the second bending portion 123 extends along the arc line, and the fluid flow directions at both ends of the second bending portion 123 have a certain angle, and the third bending portion 124 is arc-shaped, that is, the third bending portion 124 extends along the arc line, and the fluid flow directions at both ends of the third bending portion 124 have a certain angle.

[0308] Thus, the second bend 123 and the third bend 124 can change the flow direction of the heat exchange fluid, so that the second heat exchange section 12 extends within the preset area and is used for heat exchange with the battery assembly 200. At the same time, the arc-shaped second bend 123 and the third bend 124 can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0309] In the above-mentioned embodiment, by providing the second bend 123 and the third bend 124, the flow direction of the fluid in the first heat exchange channel 10 can be changed, and the smooth transition connection between the third heat exchange section 122 and the second heat exchange section 121 can be realized, and the smooth transition connection between the third heat exchange section 122 and the first heat exchange section 111 can be realized. Therefore, the second bend 123 and the third bend 124 can reduce the flow resistance of the fluid flow in the second heat exchange section 12, reduce the pressure drop, increase the flow rate of the heat exchange fluid, and further increase the heat exchange efficiency of the first heat exchange channel 10. In addition, by providing the second bend 123 and the third bend 124, the circuitous arrangement of the first heat exchange channel 10 can also be realized, so that the heat exchange area of ​​the first heat exchange channel 10 can be increased and the structure can be more compact, which is more conducive to realizing the miniaturization design of the battery 1000 and improving the volume energy density of the battery 1000.

[0310] According to some embodiments of the present application, Figure 4 As shown, the second bending portion 123 may be in a quarter arc shape.

[0311] That is to say, the second bend 123 can extend along a semicircular arc line, specifically, the first bend 112 can extend along a quarter-circular arc line that is convex away from the first connection section. The angle between the inlet and outlet of the second bend 123 can be 90°. The second bend 123 is similar to a 90° elbow in a pipe material, which can change the direction of the flow channel so that the fluid flow direction changes by 90° after passing through the second bend 123. For example, the flow direction of the liquid can be changed from the Y1 direction to the X1 direction, or from the X1 direction to the Y1 direction. Among them, the second bend 123 connects the second heat exchange section 121 and the third heat exchange section 122. At this time, the second heat exchange section 121 and the third heat exchange section 122 are arranged vertically to each other. In this way, the layout of the second heat exchange section 12 can be more regular, and the flow channel of the second heat exchange section 12 can be more in line with the layout of the battery assembly 200, thereby increasing the heat exchange effect of the second heat exchange section 12 on the battery assembly 200.

[0312] In other embodiments, the bending degree of the second bending portion 123 can be adjusted according to needs, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., which is not limited to the embodiments of the present application.

[0313] In the above embodiment, by setting the second bending portion 123 to be a quarter arc shape, the flow direction of the fluid can be changed from the original flow direction to a direction perpendicular to the original flow direction after passing through the second bending portion 123; at the same time, the arc shape can also reduce the resistance to the fluid flow, so that the fluid can flow smoothly in the second bending portion 123, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0314] According to some embodiments of the present application, Figure 4 As shown, the third bending portion 124 is in a quarter arc shape.

[0315] That is to say, the third bend 124 can extend along a semicircular arc line, specifically, the third bend 124 can extend along a quarter-circular arc line that is convex away from the first connection section. The angle between the inlet and the outlet of the third bend 124 is 90°. The third bend 124 is similar to a 90° elbow in a pipe material, which can change the direction of the flow channel so that the fluid flow direction changes by 90° after passing through the third bend 124. For example, the flow direction of the liquid can be changed from the Y1 direction to the X1 direction, or from the X1 direction to the Y1 direction. Among them, the third bend 124 connects the third heat exchange part 122 and the first heat exchange part 111. At this time, the third heat exchange part 122 and the first heat exchange part 111 are arranged perpendicular to each other. In this way, the layout of the first heat exchange channel 10 can be more regular, and the first heat exchange channel 10 can be more in line with the layout of the battery assembly 200. Thus, the heat exchange effect of the first heat exchange channel on the battery assembly 200 can be increased.

[0316] In other embodiments, the bending degree of the third bending portion 124 can be adjusted according to needs, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., which is not limited to the embodiments of the present application.

[0317] In the above-mentioned embodiment, by setting the third bending portion 124 to be a quarter arc shape, the flow direction of the fluid can be changed from the original flow direction to a direction perpendicular to the original flow direction after passing through the third bending portion 124; at the same time, the arc-shaped third bending portion 124 can also reduce the resistance to the fluid flow, so that the fluid can flow smoothly in the third bending portion 124, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0318] According to some embodiments of the present application, Figure 7 As shown, the second heat exchange section 12 may further include: a fifth heat exchange section 127, which extends along the fourth side periphery of the first heat exchange section 11 and closes at least a portion of the opening of the U-shaped area 120 formed by the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125.

[0319] It can be understood that the fifth heat exchange portion 127 can partially close the opening of the U-shaped area 120, or completely close the opening of the U-shaped area 120, thereby, the second heat exchange segment 12 can basically cover the peripheral position of the battery assembly 200, and exchange heat with the peripheral edge of the battery assembly 200, so that the second heat exchange segment 12 can exchange heat with all or most of the peripheral edges of the battery assembly 200. Therefore, the structure of the first heat exchange channel 10 can be set according to the actual arrangement of the battery assembly 200 or the heat exchange requirement, and the second heat exchange segment 12 with the fifth heat exchange portion 127 is set to optimize the heat exchange structure of the first heat exchange channel 10 and improve the heat exchange efficiency.

[0320] In the above-mentioned embodiment, by providing the fifth heat exchange part 127, the second heat exchange section 12 can perform heat exchange on the four sides of the battery assembly 200. In this way, the second heat exchange section 12 of the first heat exchange channel 10 can perform heat exchange on the four sides of the battery assembly 200. As a result, the heat exchange effect on the four sides of the battery assembly 200 can be improved, and the temperature uniformity of the battery assembly 200 can be improved.

[0321] According to some embodiments of the present application, Figure 7 As shown, the fifth heat exchange part 127 is arranged opposite to the second heat exchange part 121, and the fifth heat exchange part 127 is connected between the second end of the third heat exchange part 122 and the first heat exchange section 11, and is connected to the third heat exchange part 122 at an angle, and is connected to the first heat exchange section 11 at an angle.

[0322] It should be noted that, in the above embodiment, the second heat exchange portion 121 is arranged on one side of the first heat exchange section 11 in the first direction (for example Figure 7 The fifth heat exchange portion 127 is arranged opposite to the second heat exchange portion 121, that is, the fifth heat exchange portion 127 is arranged on the other side of the first heat exchange section 11 in the first direction (for example, Figure 7 The third heat exchange portion 122 is arranged on one side of the first heat exchange section 11 in the second direction of the first heat exchange section 11 (for example, Figure 7 The two ends of the third heat exchange part 122 in the Y1 direction are respectively connected to the second heat exchange part 121 and the fifth heat exchange part 127.

[0323] Among them, the fifth heat exchange part 127 is connected to the third heat exchange part 122 at an angle, for example, the fifth heat exchange part 127 is connected to the third heat exchange part 122 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the fifth heat exchange part 127 and the third heat exchange part 122 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc. The fifth heat exchange part 127 is connected to the first heat exchange section 11 at an angle, for example, the fifth heat exchange part 127 is connected to the first heat exchange section 11 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the fifth heat exchange part 127 and the third heat exchange part 122 is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0324] Furthermore, the fifth heat exchange portion 127 and the third heat exchange portion 122 may be connected via an arc segment. For example, the fifth heat exchange portion 127 and the third heat exchange portion 122 may be connected via a quarter arc.

[0325] Furthermore, the fifth heat exchange portion 127 and the first heat exchange section 11 may be connected via an arc segment. For example, the fifth heat exchange portion 127 and the first heat exchange section 11 may be connected via a semicircular arc.

[0326] In the above embodiment, by arranging the fifth heat exchange part 127 relative to the second heat exchange part 121 and connecting the fifth heat exchange part 127 between the third heat exchange part 122 and the first heat exchange section 11, the structure of the first heat exchange channel 10 can be further optimized according to the heat exchange requirements of the battery assembly 200.

[0327] In other specific embodiments, referring to Fig. 9 As shown, the fifth heat exchange part 127 is arranged opposite to the second heat exchange part 121, one end of the fifth heat exchange part 127 is connected to the end of the fourth heat exchange part 125 away from the second heat exchange part 121, and the fifth heat exchange part 127 is connected to the fourth heat exchange part 125 at an angle.

[0328] The fifth heat exchange portion 127 is connected to the fourth heat exchange portion 125 at an angle, for example, the fifth heat exchange portion 127 is connected to the fourth heat exchange portion 125 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the fifth heat exchange portion 127 and the third heat exchange portion 122 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0329] For example, refer to Fig.10The second heat exchange part 121 and the fifth heat exchange part 127 are respectively arranged on both sides of the first heat exchange section 11 in the X1 direction, the third heat exchange part 122 and the fourth heat exchange part 125 are respectively arranged on both sides of the first heat exchange section 11 in the Y1 direction, the fifth heat exchange part 127 extends along the Y1 direction, and the end of the fifth heat exchange part 127 close to the coordinate origin in the Y1 direction is connected to the fourth heat exchange part 125, and the end of the fifth heat exchange part 127 away from the coordinate origin in the Y1 direction extends toward the third heat exchange section 13.

[0330] The fifth heat exchange portion 127 and the fourth heat exchange portion 125 may be connected by an arc. For example, the fifth heat exchange portion 127 and the fourth heat exchange portion 125 may be connected by a quarter arc.

[0331] In the above embodiment, by arranging the fifth heat exchange part 127 relative to the second heat exchange part 121 and connecting the fifth heat exchange part 127 to the fourth heat exchange part 125 , the structure of the first heat exchange channel 10 can be further optimized according to the heat exchange requirements of the battery assembly 200 .

[0332] In the above-mentioned embodiment, by arranging the fifth heat exchange part 127 relative to the second heat exchange part 121, and connecting the fifth heat exchange part 127 between the second end of the third heat exchange part 122 and the first heat exchange section 11, or connecting one end of the fifth heat exchange part 127 to the end of the fourth heat exchange part 125 away from the second heat exchange part 121, it is possible to arrange a variety of heat exchange channels, thereby meeting the heat exchange requirements of a variety of batteries 1000.

[0333] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the first heat exchange channel 10 may further include: a third heat exchange section 13, the first heat exchange section 11 is connected between the third heat exchange section 13 and the second heat exchange section 12, and the third heat exchange section 13 is connected to the first heat exchange section 11 at an angle.

[0334] That is to say, in the first heat exchange channel 10, the second heat exchange section 12, the first heat exchange section 11 and the third heat exchange section 13 are connected in sequence, and the heat exchange fluid can flow from the second heat exchange section 12 to the third heat exchange section 13 via the first heat exchange section 11, or from the third heat exchange section 13 to the second heat exchange section 12 via the first heat exchange section 11.

[0335] The third heat exchange section 13 is connected to the first heat exchange section 11 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the third heat exchange section 13 and the first heat exchange section 11 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0336] In the above embodiment, by providing the third heat exchange section 13 , the heat exchange area of ​​the first heat exchange channel 10 can be further increased, and thus the heat exchange effect of the first heat exchange channel 10 can be further improved.

[0337] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the first heat exchange section 11 includes a plurality of first heat exchange parts 111, and the plurality of first heat exchange parts 111 are arranged in a first direction (eg Figure 4 The third heat exchange section 13 is arranged on the side of the first heat exchange section 11 away from the third heat exchange section 122, and the third heat exchange section 13 is connected to the one of the multiple first heat exchange sections 111 that is closest to the second heat exchange section 121 along the first direction.

[0338] Specifically, the third heat exchange section 13 is arranged adjacent to the fourth heat exchange portion 125 and between the fourth heat exchange portion 125 and the first heat exchange portion 111, so that the third heat exchange section 13 is also arranged on the circumferential outer side of the first heat exchange section 11. In this way, the heat exchange area of ​​the first heat exchange channel 10 in the circumferential direction can be increased, and the heat exchange efficiency of the first heat exchange channel 10 at the circumferential side position can be improved.

[0339] Furthermore, the third heat exchange section 13 and the fourth heat exchange section 125 can be arranged inside and outside the same side of the first heat exchange section 11, so that the heat exchange area at this position can be further increased and the heat exchange efficiency can be improved. In addition, since the third heat exchange section 13 and the fourth heat exchange section 125 are respectively located at the two ends of the first flow channel in the fluid flow direction, the third heat exchange section 13 and the fourth heat exchange section 125 can exchange heat with the same area of ​​the battery assembly 200, thereby improving the temperature uniformity of the area.

[0340] Furthermore, the third heat exchange section 13 is connected to the one of the multiple first heat exchange parts 111 that is closest to the second heat exchange part 121 along the first direction, the multiple first heat exchange parts 111 are connected sequentially in the first direction, and the third heat exchange part 122 is connected to the one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121 along the first direction. In this way, when heat is exchanged with the battery assembly 200, in the first heat exchange channel 10, the temperature of the heat exchange fluid in the first heat exchange part 111 that is closest to the second heat exchange part 121 and the heat exchange fluid in the third heat exchange section 13, as well as the temperature of the heat exchange fluid in the second heat exchange part 121 and the fourth heat exchange part 125 are respectively the relatively highest temperature and the relatively lowest temperature in the first heat exchange channel 10, while the temperature of the remaining parts is in the middle.

[0341] Due to the heat dissipation effect of the battery 1000, the edge temperature of the battery 1000 is lower than the middle temperature. In this way, the second heat exchange part 121 and the first heat exchange part 111 which is closest to the second heat exchange part 121 exchange heat in the same area, and the third heat exchange section 13 and the fourth heat exchange part 125 exchange heat in the same area, thereby further improving the temperature uniformity in the battery assembly 200, balancing the temperature difference of the battery assembly 200, and further improving the temperature uniformity of the battery assembly 200.

[0342] In the above-mentioned embodiment, by adding a third heat exchange section 13 and connecting the third heat exchange section 13 to the one of the multiple first heat exchange parts 111 that is closest to the second heat exchange part 121 along the first direction, the heat exchange area can be increased, the temperature difference of the battery assembly 200 can be balanced, and the temperature uniformity of the battery assembly 200 can be improved.

[0343] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the third heat exchange segment 13 extends along the first direction toward a direction away from the second heat exchange portion 121, and the first heat exchange portion 111 extends along the second direction, wherein the first direction and the second direction are arranged at an angle.

[0344] Specifically, one end of the third heat exchange part 122 is connected to one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121 along the first direction, and the other end of the third heat exchange part 122 extends toward a first heat exchange part 111 that is farthest from the second heat exchange part 121. At the same time, the fourth heat exchange part 125 also extends toward a first heat exchange part 111 that is farthest from the second heat exchange part 121.

[0345] Furthermore, the third heat exchange section 13 is arranged on the side of the first heat exchange section 11 away from the third heat exchange part 122. At this time, the third heat exchange section 13 and the fourth heat exchange part 125 are arranged on the same outer side of the circumferential direction of the first heat exchange part 111. The third heat exchange section 13 and the fourth heat exchange part 125 are respectively located at the two ends of the first flow channel in the fluid flow direction. When the third heat exchange section 13 and the fourth heat exchange part 125 perform heat exchange with the same area of ​​the battery assembly 200 together, the temperature difference at the edge of the battery assembly 200 can be balanced, thereby improving the temperature uniformity at the edge of the battery assembly 200.

[0346] In the above-mentioned embodiment, by setting the third heat exchange section 13 to extend along the first direction toward the direction away from the second heat exchange part 121, the heat exchange area of ​​the first heat exchange channel 10 can be increased, and the heat exchange effect of the first heat exchange channel 10 on the battery cell 2011 can be improved; at the same time, when the third heat exchange section 13 and the fourth heat exchange part 125 jointly exchange heat with the battery assembly 200, the temperature difference in the edge area of ​​the battery assembly 200 can be balanced, thereby improving the temperature uniformity at the edge of the battery assembly 200.

[0347] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the third heat exchange segment 13 extends along the first direction to a position close to one of the plurality of first heat exchange parts 111 that is farthest from the second heat exchange part 121 .

[0348] In the above-mentioned embodiment, by setting the third heat exchange section 13 to extend along the first direction to a position close to one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121, the length of the third heat exchange part 122 can be increased, the heat exchange area of ​​the third heat exchange part 122 can be increased, and the heat exchange effect of the first heat exchange channel 10 can be improved.

[0349] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the first heat exchange channel 10 may further include: a fourth bending portion 14 , which is arc-shaped and bent and connected between the third heat exchange section 13 and the first heat exchange portion 111 .

[0350] The fourth bend 14 is arc-shaped, that is, the fourth bend 14 extends along an arc line, and the fluid flow directions at both ends of the fourth bend 14 have a certain angle, so that the fourth bend 14 can change the flow direction of the fluid, thereby allowing the third heat exchange section 13 to extend along a preset direction. At the same time, the arc shape can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0351] In the above-mentioned embodiment, by providing the fourth bend 14, the flow direction of the fluid between the third heat exchange section 13 and the first heat exchange section 111 can be changed. At the same time, the arc-shaped fourth bend 14 can reduce the flow resistance of the fluid, reduce the pressure drop, increase the flow rate of the fluid, and further increase the heat exchange efficiency of the first heat exchange channel 10. In addition, by providing the fourth bend 14, the circuitous arrangement of the first heat exchange channel 10 can also be achieved, so that the heat exchange area of ​​the first heat exchange channel 10 can be increased and the structure can be more compact, which is more conducive to realizing the miniaturization design of the battery 1000 and improving the volume energy density of the battery 1000.

[0352] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the fourth bending portion 14 is in the shape of a quarter arc.

[0353] That is, the fourth bend 14 can extend along a semicircular arc line, specifically, the fourth bend 14 can extend along a quarter arc line protruding toward the connection position of the second heat exchange part 121 and the fourth heat exchange part 125. The angle between the inlet and the outlet of the fourth bend 14 is 90°. The fourth bend 14 is similar to a 90° elbow in a pipe material, and can change the direction of the flow channel, so that the fluid flow direction changes by 90° after passing through the fourth bend 14. For example, the flow direction of the liquid can be changed from the X1 direction to the Y1 direction, or from the Y1 direction to the X1 direction.

[0354] Furthermore, the fourth bend 14 connects the third heat exchange section 13 and the first heat exchange section 111, and the third heat exchange section 13 and the first heat exchange section 111 can be arranged perpendicular to each other, wherein the first heat exchange section 111 extends along the second direction, and the third heat exchange section 13 extends along the first direction, and the first direction is perpendicular to the second direction. In this way, the layout of the first heat exchange channel 10 can be more regular, and the first heat exchange channel 10 can be more closely fitted to the layout of the battery assembly 200, thereby increasing the heat exchange effect of the first heat exchange channel on the battery assembly 200.

[0355] In other embodiments, the bending degree of the fourth bending portion 14 can be adjusted according to needs, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., which is not limited to the embodiments of the present application.

[0356] In the above-mentioned embodiment, by setting the fourth bending portion 14 to be a quarter arc shape, the flow direction of the fluid can be changed from the original flow direction to a direction perpendicular to the original flow direction after passing through the fourth bending portion 14; at the same time, the arc shape can also reduce the resistance to the fluid flow, so that the fluid can flow smoothly in the fourth bending portion 14, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0357] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the first heat exchange channel 10 may further include: a first inlet and outlet section 15 , one end of which is connected to the third heat exchange section 13 at an angle, and the other end of the first inlet and outlet section 15 forms a first inlet and outlet of the first heat exchange channel 10 .

[0358] Among them, the first inlet and outlet are used for the inlet or outlet of the heat exchange fluid. When the first inlet and outlet are used for the inlet of the heat exchange fluid, the first inlet and outlet section 15 is used to transport the heat exchange fluid to the third heat exchange section 13; when the first inlet and outlet are used for the outlet of the heat exchange fluid, the first inlet and outlet section 15 is used to guide the heat exchange fluid after heat exchange out of the first heat exchange channel 10 through the first inlet and outlet.

[0359] The first inlet and outlet section 15 is connected to the third heat exchange section 13 at an angle, for example, the first inlet and outlet section 15 is connected to the third heat exchange section 13 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the first inlet and outlet section 15 and the third heat exchange section 13 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0360] In the above-mentioned embodiment, by setting the first entrance and exit section 15, the external pipeline can be facilitated so that the heat exchange medium can enter or discharge the first heat exchange channel 10. At the same time, it can also guide the heat exchange fluid entering or discharging the first heat exchange channel 10, so that the heat exchange fluid can enter or discharge quickly, thereby improving the heat exchange rate.

[0361] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the first inlet and outlet section 15 extends along the second direction away from the first heat exchange section 11, and the third heat exchange section 13 extends along the first direction.

[0362] It is understandable that a certain angle is formed between the first entrance and exit section 15 and the third heat exchange section 13 , thereby a certain space is formed on the side of the third heat exchange section 13 facing the first entrance and exit section 15 , which can be beneficial to the layout of other components in the battery 1000 .

[0363] In the above-mentioned embodiment, by setting the first inlet and outlet section 15 to extend along the second direction away from the first heat exchange section 11, the pipeline arrangement of the first heat exchange channel 10 can be more rationalized and convenient for connection with external pipelines; at the same time, the first inlet and outlet can be kept away from the battery assembly 200, which is beneficial to reduce the possibility of damage to the battery assembly 200 due to water leakage from the first inlet and outlet.

[0364] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the first heat exchange channel 10 may further include: a fifth bending portion 16 , which is arc-shaped and bent and connected between the third heat exchange section 13 and the first inlet and outlet section 15 .

[0365] Among them, the fifth bend 16 is arc-shaped, that is, the fifth bend 16 extends along the arc line, and the fluid flow directions at both ends of the fifth bend 16 have a certain angle, thereby, the third heat exchange section 13 and the first inlet and outlet section 15 can be connected, so that the heat exchange fluid can flow smoothly from the third heat exchange section 13 to the first inlet and outlet section 15 or from the first inlet and outlet section 15 to the third heat exchange section 13, thereby realizing the liquid inlet or liquid outlet of the first inlet and outlet section 15; at the same time, the arc shape can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0366] In the above-mentioned embodiment, by setting the fifth bending section, the heat exchange fluid can flow smoothly from the third heat exchange section 13 to the first inlet and outlet section 15 or from the first inlet and outlet section 15 to the third heat exchange section 13, thereby realizing the liquid inlet or liquid outlet of the first inlet and outlet section 15; at the same time, the arc-shaped fifth bending portion 16 can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0367] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the fifth bending portion 16 is in an arc shape, and the central angle corresponding to the fifth bending portion 16 is greater than or equal to 90° and less than 180°.

[0368] For example, the central angle corresponding to the fifth bending portion 16 may be 90°, 120°, 150° or 170°.

[0369] like Figure 4 As shown, the heat exchanger 100 includes two first heat exchange channels 10, the fifth bend 16 of the first heat exchange channel 10 located on the side away from the coordinate origin in the Y1 direction is in a quarter arc shape, and the third heat exchange section 13 is arranged vertically with the first inlet and outlet section 15. At the same time, the first inlet and outlet section 15 of the first heat exchange channel 10 located on the lower side includes a first extension section and a second extension section, and the first extension section is connected between the second extension section and the third heat exchange section 13, wherein the first extension section extends along a straight line inclined relative to the second direction, and the second extension section extends along a straight line parallel to the second direction, and the first extension section is connected to the third heat exchange section 13 through the fifth bend 16, and the central angle corresponding to the arc line of the fifth bend 16 is greater than 90° and less than 135°.

[0370] In the above-mentioned embodiment, by setting the fifth bend 16 to be in an arc shape, the resistance to fluid flow can be further reduced, so that the fluid can flow smoothly in the fifth bend 16, and the heat exchange efficiency can be effectively prevented from being reduced due to the fluid flowing too slowly; at the same time, the central angle corresponding to the fifth bend 16 is greater than or equal to 90° and less than 180°, and a certain space can also be formed on the side of the third heat exchange section 13 toward the first entrance and exit section 15, which can be beneficial to the arrangement of other components in the battery 1000 and improve the rationality of the layout of the battery 1000.

[0371] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the second heat exchange section 12 further includes: a sixth bending portion 126 , and the sixth bending portion 126 is connected between the fourth heat exchange portion 125 and the second heat exchange portion 121 .

[0372] Among them, the sixth bending portion 126 is formed in an arc shape, that is, the sixth bending portion 126 extends along the arc line, and the fluid flow directions at both ends of the sixth bending portion 126 have a certain angle, thereby, the sixth bending portion 126 can change the flow direction of the heat exchange fluid, and then the second heat exchange portion 121 and the fourth heat exchange portion 125 can be extended along a preset direction. At the same time, the arc-shaped sixth bending portion 126 can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0373] In the above-mentioned embodiment, by setting the sixth bend 126, the flow direction of the fluid in the first heat exchange channel 10 can be changed, and the circuitous arrangement of the first heat exchange channel 10 can be realized, thereby increasing the heat exchange area of ​​the first heat exchange channel 10 and improving the heat exchange efficiency of the first heat exchange channel 10; at the same time, the sixth bend 126 is arc-shaped, which can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10. In addition, by setting the sixth bend, the second heat exchange section 12 can form a U-shaped area 120, thereby realizing that the second heat exchange section 12 surrounds the first heat exchange section, thereby increasing the compactness of the arrangement of the first heat exchange channel 10, realizing the miniaturization of the structure of the first heat exchange channel 10, and facilitating the improvement of the volume energy density of the battery.

[0374] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the sixth bending portion 126 is in a quarter arc shape.

[0375] That is to say, the sixth bend 126 can extend along a semicircular arc line, specifically, the sixth bend 126 can extend along a quarter-circular arc line that is protruding away from the first heat exchange section 11. The angle between the inlet and the outlet of the sixth bend 126 is 90°. The sixth bend 126 is similar to a 90° elbow in a pipe material, which can change the direction of the flow channel so that the fluid flow direction changes by 90° after passing through the sixth bend 126. For example, the flow direction of the liquid can be changed from the X1 direction to the Y1 direction, or from the Y1 direction to the X1 direction. Among them, the sixth bend 126 connects the second heat exchange section 121 and the fourth heat exchange section 125. At this time, the second heat exchange section 121 and the fourth heat exchange section 125 are arranged vertically. In this way, the layout of the second heat exchange section 12 can be made more regular, and the second heat exchange section 12 can be more in line with the layout of the battery assembly 200, thereby increasing the heat exchange effect of the second heat exchange section 12 on the battery assembly 200.

[0376] In other embodiments, the bending degree of the sixth bending portion 126 can be adjusted according to needs, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., which is not limited to the embodiments of the present application.

[0377] In the above-mentioned embodiment, by setting the sixth bending portion 126 to be a quarter arc shape, the flow direction of the fluid can be changed from the original flow direction to a direction perpendicular to the original flow direction after passing through the sixth bending portion 126; at the same time, the arc shape can further reduce the resistance to the fluid flow, so that the fluid can flow smoothly in the sixth bending portion 126, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0378] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the first heat exchange channel 10 may further include: a second inlet and outlet section 17 , one end of which is connected to the fourth heat exchange portion 125 at an angle, and the other end of the second inlet and outlet section 17 forms a second inlet and outlet of the first heat exchange channel 10 .

[0379] The second inlet and outlet are used for the inlet or outlet of the heat exchange fluid. When the second inlet and outlet are used for the inlet of the heat exchange fluid, the second inlet and outlet section 17 is used to transport the heat exchange fluid to the third heat exchange section 13; when the second inlet and outlet are used for the outlet of the heat exchange fluid, the second inlet and outlet section 17 is used to guide the heat exchange fluid after heat exchange into the first heat exchange channel 10 through the second inlet and outlet.

[0380] The second inlet and outlet section 17 is connected to the fourth heat exchange part 125 at an angle, for example, the second inlet and outlet section 17 is connected to the fourth heat exchange part 125 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the second inlet and outlet section 17 and the fourth heat exchange part 125 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0381] In the above-mentioned embodiment, by setting the second entrance and exit section 17, it can be beneficial to the external pipeline so that the heat exchange medium can enter or discharge the first heat exchange channel 10 to complete the heat exchange of the battery cell 2011. At the same time, it can also guide the heat exchange fluid entering or discharging the first heat exchange channel 10, so that the heat exchange fluid can enter or discharge quickly, thereby improving the heat exchange rate.

[0382] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the second inlet and outlet section 17 extends along the second direction away from the first heat exchange section 11, and the fourth heat exchange portion 125 extends along the first direction (eg Figure 4 The device is arranged to extend in the Y1 direction as shown.

[0383] It can be understood that a certain angle is formed between the second entrance and exit section 17 and the fourth heat exchange part 125, thereby, a certain space is formed on the side of the fourth heat exchange part 125 facing the second entrance and exit section 17, which can be beneficial to the layout of other components in the battery 1000 (such as structures such as high-voltage boxes).

[0384] In the above-mentioned embodiment, by setting the second inlet and outlet section 17 to extend along the second direction away from the first heat exchange section 11, the pipeline arrangement of the first heat exchange channel 10 can be more rationalized and convenient for connection with external pipelines; at the same time, the second inlet and outlet can be made away from the battery assembly 200, which is beneficial to reduce the possibility of damage to the battery assembly 200 due to water leakage at the second inlet and outlet.

[0385] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the first heat exchange channel 10 further includes: a seventh bending portion 18 , which is arc-shaped and bent and connected between the fourth heat exchange portion 125 and the second inlet and outlet section 17 .

[0386] Among them, the seventh bending portion 18 is arc-shaped, that is, the seventh bending portion 18 has a certain angle, thereby, the seventh bending portion 18 is bent and connected between the fourth heat exchange portion 125 and the second inlet and outlet section 17, which can realize the connection between the fourth heat exchange portion 125 and the second inlet and outlet section 17, so that the heat exchange fluid can flow smoothly from the fourth heat exchange portion 125 to the second inlet and outlet section 17 or from the second inlet and outlet section 17 to the fourth heat exchange portion 125, realizing the liquid inlet or liquid outlet of the second inlet and outlet section 17; at the same time, the arc shape can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0387] In the above-mentioned embodiment, by setting the seventh bend portion, the heat exchange fluid can flow smoothly from the fourth heat exchange portion 125 to the second inlet and outlet section 17 or from the second inlet and outlet section 17 to the fourth heat exchange portion 125, thereby realizing the liquid inlet or liquid outlet of the second inlet and outlet section 17; at the same time, the arc-shaped seventh bend portion 18 can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0388] According to some embodiments of the present application, Figure 4-Figure 8 As shown, the seventh bending portion 18 is in an arc shape, and the central angle corresponding to the seventh bending portion 18 is greater than or equal to 90° and less than 180°.

[0389] For example, the central angle corresponding to the seventh bending portion 18 may be 90°, 120°, 150° or 170°.

[0390] like Figure 4As shown, the heat exchanger 100 includes two first heat exchange channels 10, the seventh bend 18 of the first heat exchange channel 10 located on the side away from the coordinate origin in the Y1 direction is in a quarter arc shape, and the fourth heat exchange portion 125 is arranged vertically with the second inlet and outlet section 17. At the same time, the second inlet and outlet section 17 of the first heat exchange channel 10 located on the lower side includes a third extension section and a fourth extension section, and the third extension section is connected between the fourth extension section and the fourth heat exchange portion 125, wherein the third extension section extends along a straight line inclined relative to the second direction, and the fourth extension section extends along a straight line parallel to the second direction, and the third extension section is connected to the fourth heat exchange portion 125 through the seventh bend 18, and the central angle corresponding to the arc line of the seventh bend 18 is greater than 90° and less than 135°.

[0391] In the above-mentioned embodiment, by setting the seventh bend 18 to be an arc shape, the resistance to fluid flow can be further reduced, so that the fluid can flow smoothly in the seventh bend 18, and the heat exchange efficiency can be effectively prevented from being reduced due to the slow flow of the fluid; at the same time, the central angle corresponding to the seventh bend 18 is greater than or equal to 90° and less than 180°, and an avoidance space can be formed on the side of the fourth heat exchange part 125 toward the second entrance and exit section 17, which can be beneficial to the layout of other components in the battery 1000 and improve the rationality of the layout of the battery 1000.

[0392] According to some embodiments of the present application, the first heat exchange section 11 is connected downstream of the second heat exchange section 12 along the fluid flow direction.

[0393] That is to say, the heat exchange fluid first flows through the second heat exchange section 12 and then flows into the first heat exchange section 11, wherein the second heat exchange section 12 is arranged around the circumference of the first heat exchange section 11. When the first heat exchange channel 10 exchanges heat with the battery assembly 200, the peripheral temperature of the battery assembly 200 dissipates heat quickly, especially under low-temperature heating conditions. The high-temperature heat exchange fluid starts to exchange heat from the second heat exchange section 12, so that the first heat exchange channel 10 can preferentially exchange heat with the outer circumference of the battery assembly 200, which is beneficial to improve the temperature difference between the inside and outside of the battery assembly 200, thereby improving the service life of the battery 1000 to a certain extent.

[0394] In the above-mentioned embodiment, by setting the first heat exchange section 11 to be connected to the downstream of the second heat exchange section 12 along the fluid flow direction, the first heat exchange channel 10 can preferentially exchange heat on the outer circumference of the battery 1000, which is beneficial to improve the temperature difference of the battery 1000 in different environments and increase the service life of the battery 1000 to a certain extent.

[0395] According to some embodiments of the present application, the heat exchange element 100 is configured as follows: when heating the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected to the downstream of the second heat exchange section 12 along the fluid flow direction; when cooling the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected to the upstream of the second heat exchange section 12 along the fluid flow direction.

[0396] Specifically, when heating the battery assembly 200 of the battery 1000, the temperature of the heat exchange fluid flowing in the heat exchange element 100 is higher than the operating temperature of the battery 1000. The heat exchange element 100 heats the battery assembly 200, and the high-temperature heat exchange fluid first flows into the second heat exchange section 12 and then flows to the first heat exchange section 11. The temperature of the heat exchange fluid flowing inside the second heat exchange section 12 is higher than the temperature of the heat exchange fluid inside the first heat exchange section 11.

[0397] Since the high-temperature fluid first enters the second heat exchange section 12 located at the periphery of the first heat exchange channel 10, the second heat exchange section 12 can first heat the battery cells 2011 at the periphery of the battery assembly 200, and the heat exchange fluid enters the first heat exchange section 11 and then cools the battery cells 2011 at the middle of the battery assembly 200. Since the battery cells 2011 at the periphery of the battery 1000 dissipate more heat to the external environment, the temperature of the battery cells 2011 at the periphery of the battery 1000 drops more. The heat exchange fluid first heats the battery cells 2011 at the periphery of the battery 1000. The higher temperature heat exchange fluid can increase the temperature of the battery cells 2011 at the periphery while compensating for the heat lost by the battery cells 2011 due to heat dissipation to the external environment, thereby meeting its heating needs. The battery cells 2011 at the middle of the battery assembly 200 have less contact area with the external environment and less heat loss. The lower temperature heat exchange fluid flowing in the first heat exchange section 11 can cooperate with the heat generated by the battery cells 2011 themselves to meet their heating needs. As a result, the heating effects obtained by the battery cells 2011 at the periphery of the battery assembly 200 and the battery cells 2011 at the middle of the battery assembly 200 are basically the same, and the temperatures of the battery cells 2011 at the periphery of the battery assembly 200 and the battery cells 2011 at the middle of the battery assembly 200 after heating are relatively consistent, making the temperature distribution in the battery 1000 more uniform.

[0398] When cooling the battery assembly 200 of the battery 1000, the temperature of the heat exchange fluid flowing in the heat exchange element 100 is lower than the operating temperature of the battery 1000. The heat exchange element 100 is used to cool the battery 1000. The heat exchange fluid flows from the first heat exchange section 11 to the second heat exchange section 12. The temperature of the heat exchange fluid flowing in the first heat exchange section 11 is lower than the temperature of the heat exchange fluid inside the second heat exchange section 12.

[0399] When the battery 1000 is cooled, the heat exchange fluid flows from the first heat exchange section 11 to the second heat exchange section 12 , that is, the heat exchange fluid flows from the middle portion of the battery assembly 200 to the edge portion of the battery assembly 200 and exchanges heat. Among them, since the heat dissipation of the battery cells 2011 at the periphery of the battery 1000 is better than that of the internal battery cells 2011, the heat exchange fluid with a lower temperature in the first heat exchange section 11 can better meet the heat dissipation requirements of the battery cells 2011 at the middle part of the battery 1000. At the same time, since the battery cells 2011 at the periphery of the battery assembly 200 can directly dissipate heat naturally toward the external environment, even if the temperature of the heat exchange fluid in the second heat exchange section 12 is slightly higher, it can still meet the heat dissipation requirements of the peripheral battery cells 2011, so that the cooling effects obtained by the battery cells 2011 at the periphery of the battery 1000 and the battery cells 2011 at the middle part of the battery 1000 are roughly the same, and then the temperatures of the battery cells 2011 at the periphery of the battery 1000 and the battery cells 2011 at the middle part of the battery 1000 after cooling and heat dissipation are relatively consistent, thereby reducing the temperature difference between the inside and outside of the battery assembly 200 and making the temperature distribution in the battery 1000 more uniform.

[0400] In the above-mentioned embodiment, the heat exchange element 100 is configured as follows: when heating the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected to the downstream of the second heat exchange section 12 along the fluid flow direction; when cooling the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected to the upstream of the second heat exchange section 12 along the fluid flow direction, which can further enhance the heat exchange effect on the battery 1000 and improve the temperature uniformity of the battery assembly 200.

[0401] According to some embodiments of the present application, Figure 4-Figure 10 As shown, the heat exchange element 100 has one or more heat exchange channels. When the number of heat exchange channels is multiple, the multiple heat exchange channels are arranged at intervals along the first direction, or arranged around each other, at least one heat exchange channel is formed as a first heat exchange channel 10, and multiple heat exchange channels are arranged in parallel.

[0402] It is understandable that the number of heat exchange channels of the heat exchange element 100 may be one, two, three, four or more. When the number of heat exchange channels is multiple, one of the multiple heat exchange channels may be formed as the first heat exchange channel 10, or two, three, four or more heat exchange channels may be formed as the first heat exchange channel 10, or multiple heat exchange channels may all be formed as the first heat exchange channel 10.

[0403] In some specific embodiments, a plurality of heat exchange channels are arranged at intervals along the first direction, for example Figure 4As shown, the heat exchange element 100 may include two heat exchange channels, and the two first heat exchange channels 10 are arranged at intervals along the first direction. Further, the two heat exchange channels may both be formed as first heat exchange channels 10. For another example, the heat exchange element 100 may include three heat exchange channels, and the three heat exchange channels are arranged in sequence along the first direction. Further, two of the three heat exchange channels are first heat exchange channels 10, and one is a second heat exchange channel 30, and the second heat exchange channel 30 is arranged between the two first heat exchange channels 10.

[0404] In other embodiments, multiple heat exchange channels are arranged around each other. Fig. 9 As shown, the heat exchange element 100 has two heat exchange channels arranged in parallel, and the two heat exchange channels are arranged around each other. Further, the two heat exchange channels can both be formed into the first heat exchange channel 10. Fig.10 As shown, the heat exchange element 100 has three heat exchange channels arranged in parallel, the three heat exchange channels are arranged around each other, and the three heat exchange channels can all be formed as first heat exchange channels.

[0405] The multiple heat exchange channels are arranged in parallel, that is, the inlets of the multiple heat exchange channels are connected to the same liquid supply pipe, and the outlets of the multiple heat exchange channels are connected to the same liquid outlet pipe.

[0406] In the above-mentioned embodiment, by arranging the heat exchange element 100 with one or more heat exchange channels, and the multiple heat exchange channels are arranged at intervals along the first direction or arranged around each other, the diversity of the heat exchange channels can be increased, thereby improving the adaptability of the heat exchange element 100, so that it can meet the needs of different batteries 1000, thereby improving the market competitiveness of the battery 1000; at the same time, the multiple heat exchange channels are arranged in parallel, so that the multiple heat exchange channels can exchange heat at the same time, thereby reducing the heat exchange time of the heat exchange element 100 and improving the heat exchange efficiency.

[0407] According to some embodiments of the present application, Figure 4 As shown, multiple heat exchange channels are arranged at intervals along the first direction, and the two heat exchange channels located at both ends of the first direction are both first heat exchange channels 10; and the two first heat exchange channels 10 are symmetrically arranged about the center line of the heat exchange element 100 along the second direction, wherein the second direction is set at an angle to the first direction.

[0408] It can be understood that arranging the second heat exchange section 12 of the first heat exchange channel 10 on the periphery of the battery assembly 200 can improve the uniformity of the temperature inside and outside the battery assembly 200. Therefore, the two heat exchange channels located at both ends of the first direction are formed into the first heat exchange channel 10, which can make the battery cells 2011 at both ends of the battery assembly 200 in the first direction have better temperature uniformity performance and achieve overall temperature uniformity of the battery assembly 200.

[0409] Furthermore, the fluid flow directions and the inlets and outlets at both ends of the two first heat exchange channels 10 are arranged symmetrically, so that the two first heat exchange channels 10 can synchronously exchange heat at both ends of the battery assembly 200 in the first direction, resulting in a better temperature equalization effect.

[0410] “The second direction is arranged at an angle to the first direction” is intended to explain that the first direction and the second direction can be arranged vertically, or can be arranged so as to only intersect non-vertically. For example, the first direction and the second direction can be arranged at an angle of 30°, 60° or 80°.

[0411] In the above embodiment, by providing two symmetrically arranged first heat exchange channels 10, liquid can be fed into both sides simultaneously, the liquid flow rate can be increased, the length of a single heat exchange channel can be shortened, and the pressure drop in a single heat exchange channel can be reduced, thereby improving the heat exchange efficiency.

[0412] According to some embodiments of the present application, Figure 4 As shown, the plurality of heat exchange channels are symmetrically arranged about the center line of the heat exchange element 100 along the second direction.

[0413] Among them, the flow directions of multiple heat exchange channels and the inlets and outlets at both ends are also arranged symmetrically, so that the heat exchange element 100 can be divided into two symmetrically distributed parts. In this way, during the heat exchange process, the fluid distribution of the two symmetrical parts of the heat exchange element 100 is consistent, thereby improving the temperature consistency of the heat exchange areas of the battery assembly 200 corresponding to the two parts of the heat exchange element 100, thereby further improving the temperature uniformity of the battery assembly 200.

[0414] In the above-mentioned embodiment, by arranging multiple heat exchange channels symmetrically about the center line of the heat exchange element 100 along the second direction, the multiple heat exchange channels can synchronously exchange heat with the battery assembly 200 to improve the heat exchange efficiency. At the same time, it can also improve the temperature consistency of the two symmetrically arranged heat exchange areas of the battery assembly 200 and the heat exchange element 100, thereby further improving the temperature uniformity effect of the battery assembly 200.

[0415] In some specific embodiments of the present application, multiple heat exchange channels are arranged asymmetrically about the center line of the heat exchange element 100 along the second direction. In this way, the multiple heat exchange channels can be designed according to the actual situation of the battery assembly 200, so that the heat exchange element 100 can meet the heat exchange requirements of the battery assembly 200, and further ensure the heat exchange effect of the battery assembly 200.

[0416] According to some embodiments of the present application, Figure 8 As shown, the multiple heat exchange channels also include: at least one second heat exchange channel 30, the second heat exchange channel 30 is arranged between the two first heat exchange channels 10, wherein the structure of any second heat exchange channel 30 is the same as or different from the structure of the first heat exchange channel 10.

[0417] Specifically, the second heat exchange channel 30 is arranged between the two first heat exchange channels 10, and is mainly used for heat exchange with the middle position of the battery assembly 200, wherein the temperature of the battery unit 201 arranged in the middle position is relatively balanced. Therefore, the structure of any second heat exchange channel 30 may be the same as or different from the structure of the first heat exchange channel 10. For example, the structure of the second heat exchange channel 30 may be a simple U-shaped structure. Furthermore, the structure of the second heat exchange channel 30 may be designed according to the actual heat exchange conditions of the battery 1000.

[0418] In addition, the number of the second heat exchange channels 30 can be one or more. For example, the number of the second heat exchange channels 30 can be one, two, three or more. The number of the second heat exchange channels 30 can be selected according to the arrangement of the battery components 200.

[0419] In the above embodiment, by providing at least one second heat exchange channel 30 , the diversity of the heat exchange channel arrangement can be increased, so that the heat exchange element 100 can better exchange heat with the battery assembly 200 , thereby improving the heat exchange effect of the heat exchange element 100 .

[0420] According to some embodiments of the present application, Figure 8 As shown, the second heat exchange channel 30 includes a plurality of fourth heat exchange segments 31, which are sequentially connected along the fluid flow direction, wherein the fourth heat exchange segments 31 extend along the second direction, and the plurality of fourth heat exchange segments 31 are arranged at intervals in the first direction.

[0421] Specifically, a plurality of fourth heat exchange segments 31 are sequentially connected to form a U-shaped heat exchange channel or an S-shaped heat exchange channel.

[0422] For example, the number of the fourth heat exchange segments 31 may be two, three or more, and the number of the fourth heat exchange segments 31 may be designed according to the size of the battery assembly 200 .

[0423] In the above embodiment, by setting the second heat exchange channel 30 to include multiple fourth heat exchange segments 31 connected in sequence, the structural complexity of the second heat exchange channel 30 can be reduced, and then the production cost of the second heat exchange channel 30 can be reduced, thereby reducing the production cost of the heat exchange component 100.

[0424] According to some embodiments of the present application, Fig. 9As shown, the heat exchange element 100 has a plurality of heat exchange channels, and the plurality of heat exchange channels include a first heat exchange channel 10 and at least one third heat exchange channel 40, the third heat exchange channel 40 is bent in a U-shaped region 120 of the first heat exchange channel 10, and the first heat exchange channel 10 and the third heat exchange channel 40 are bent in the same plane, and the bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 are the same or different.

[0425] It is understandable that the bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 may be the same or different. The number of the third heat exchange channel 40 is one or more, for example, the number of the third heat exchange channel 40 may be one, two, three or more.

[0426] For example Fig. 9 As shown, the multiple heat exchange channels include a first heat exchange channel 10 and a third heat exchange channel 40 . The third heat exchange channel 40 has the same structure as the first heat exchange channel 10 , and the third heat exchange channel 40 is bent in the U-shaped area 120 of the first heat exchange channel 10 .

[0427] Specifically, the first heat exchange channel 10 and the third heat exchange channel 40 both include a first heat exchange portion 111, a second heat exchange portion 121, a third heat exchange portion 122 and a fourth heat exchange portion 125. The first heat exchange portion 111, the third heat exchange portion 122 and the fourth heat exchange portion 125 of the first heat exchange channel 10 and the third heat exchange channel 40 all extend along the X1 direction, and the second heat exchange portion 121 extends along the Y1 direction. Among them, the fourth heat exchange portion 125, the second heat exchange portion 121 and the third heat exchange portion 122 are bent and connected in sequence to form a U-shaped structure with an opening facing the side away from the coordinate origin in the X1 direction. The first heat exchange portion 111 includes a plurality of first heat exchange portions 111 arranged in the U-shaped area 120, and arranged at intervals along the Y1 direction and bent and connected in sequence.

[0428] The third heat exchange part 122 of the first heat exchange channel 10 is arranged on the side of the multiple first heat exchange parts 111 far from the coordinate origin in the Y1 direction, and the fourth heat exchange part 125 is arranged on the side of the multiple first heat exchange parts 111 close to the coordinate origin in the Y1 direction, and the third heat exchange channel 40 is connected to the first heat exchange part 111 farthest from the coordinate origin in the Y1 direction. The third heat exchange part 122 of the third heat exchange channel 40 is arranged on the side of the multiple first heat exchange parts 111 close to the coordinate origin in the Y1 direction, and the fourth heat exchange part 125 is arranged on the side of the multiple first heat exchange parts 111 far from the coordinate origin in the Y1 direction, and the third heat exchange part 122 of the third heat exchange channel 40 is connected to the first heat exchange part 111 closest to the coordinate origin in the Y1 direction. The third heat exchange channel 40 is arranged between the fourth heat exchange part 125 of the first heat exchange channel 10 and the multiple first heat exchange parts 111.

[0429] In addition, the first heat exchange channel 10 and the third heat exchange channel 40 also include a first entrance and exit section 15 and a second entrance and exit section 17, wherein the first entrance and exit section 15 of the first heat exchange channel 10 is connected to the fourth heat exchange part 125, and the second entrance and exit section 17 is connected to the first heat exchange part 111 which is closest to the coordinate origin in the Y1 direction; the first entrance and exit section 15 of the third heat exchange channel 40 is connected to the first heat exchange part 111 which is farthest from the coordinate origin in the Y1 direction, and the second entrance and exit section 17 is connected to the fourth heat exchange part 125.

[0430] In the above-mentioned embodiment, by setting a plurality of heat exchange channels, the diversity of the heat exchange channels can be increased, so that the arrangement of the heat exchange channels can be designed according to the cooling requirements of the battery 1000, thereby further increasing the heat exchange effect of the heat exchange element 100 and improving the temperature uniformity of the battery 1000.

[0431] According to some embodiments of the present application, Fig.10 As shown, the third heat exchange channel 40 includes a U-shaped region 120 having the same structure as the first heat exchange channel 10 , and at least a portion of the first heat exchange segment 11 of the first heat exchange channel 10 is disposed in the U-shaped region 120 of the third heat exchange channel 40 .

[0432] It is understandable that, the first heat exchange channel 10 may have only a portion of the first heat exchange section 11 disposed in the U-shaped region 120 of the third heat exchange channel 40 , or may have the entire first heat exchange section 11 disposed in the U-shaped region 120 of the third heat exchange channel 40 .

[0433] For example Fig.10 As shown, the plurality of heat exchange channels include a first heat exchange channel 10 and two third heat exchange channels 40 , and the two third heat exchange channels 40 have the same structure as the first heat exchange channel 10 .

[0434] Specifically, the first heat exchange channel 10 and the two third heat exchange channels 40 each include a first heat exchange portion 111, a second heat exchange portion 121, a third heat exchange portion 122 and a fourth heat exchange portion 125. The fourth heat exchange portion 125, the second heat exchange portion 121 and the third heat exchange portion 122 of the first heat exchange channel 10 and any one of the two third heat exchange channels 40 are bent and connected in sequence to form a U-shaped structure with an opening facing the side away from the origin of the coordinate in the X1 direction; the first heat exchange portion 111 includes a plurality of first heat exchange portions 111 arranged in the U-shaped region 120, and the plurality of first heat exchange portions 111 extend in a straight line along the X1 direction, and are arranged at intervals along the Y1 direction and bent and connected in sequence; the second heat exchange portion 121 extends along the Y1 direction, and the third heat exchange portion 122 and the fourth heat exchange portion 125 both extend along the X1 direction.

[0435] Among them, the third heat exchange part 122 of the first heat exchange channel 10 is located on the side of the multiple first heat exchange parts 111 away from the coordinate origin in the Y1 direction, and is connected to the first heat exchange part 111 farthest from the coordinate origin in the Y1 direction, and the fourth heat exchange part 125 is located on the side of the multiple first heat exchange parts 111 close to the coordinate origin in the Y1 direction.

[0436] The third heat exchange part 122 of the third heat exchange channel 40a is located on the side of the plurality of first heat exchange parts 111 far from the coordinate origin in the Y1 direction, and is connected to the first heat exchange part 111 farthest from the coordinate origin in the Y1 direction. The third heat exchange part 122 of the third heat exchange channel 40a and the first heat exchange part 111 of the third heat exchange channel 40a farthest from the coordinate origin in the Y1 direction are located between the third heat exchange part 122 of the first heat exchange channel 10 and the plurality of first heat exchange parts 111 of the first heat exchange channel 10. The plurality of first heat exchange parts 111 of the first heat exchange channel 10 are located between the first heat exchange part 111 of the third heat exchange channel 40a farthest from the coordinate origin in the Y1 direction and the second first heat exchange part 111 of the third heat exchange channel 40a on the side far from the coordinate origin in the Y1 direction.

[0437] The third heat exchange channel 40b is located between the fourth heat exchange part 125 of the third heat exchange channel 40a and the multiple first heat exchange parts 111 of the third heat exchange channel 40a, and the fourth heat exchange part 125 of the third heat exchange channel 40b is located on the side of the multiple first heat exchange parts 111 of the third heat exchange channel 40b away from the coordinate origin in the Y1 direction, and the third heat exchange part 122 of the third heat exchange channel 40b is connected to the first heat exchange part 111 of the third heat exchange channel 40 that is closest to the coordinate origin in the Y1 direction.

[0438] In addition, the first heat exchange channel 10 and the two third heat exchange channels 40 also include a first inlet and outlet section 15 and a second inlet and outlet section 17 , wherein the first inlet and outlet section 15 and the second inlet and outlet section 17 are respectively connected to the fourth heat exchange part 125 and the first heat exchange part 111 .

[0439] In the above-mentioned embodiment, by setting the third heat exchange channel 40 to include a U-shaped area 120 with the same structure as the first heat exchange channel 10, at least a portion of the first heat exchange section 11 of the first heat exchange channel 10 is arranged in the U-shaped area 120 of the third heat exchange channel 40, so that at least a portion of the first heat exchange channel 10 and the third heat exchange channel 40 can be arranged around each other. In this way, the winding method of the heat exchange channel can be arranged according to the heat exchange requirements of various parts of the battery assembly 200, thereby further increasing the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 1000.

[0440] According to some embodiments of the present application, Figure 9-10As shown, the U-shaped region 120 of the second heat exchange section 12 of the first heat exchange channel 10 is located at the outermost circumference of the heat exchange element 100 .

[0441] That is to say, the U-shaped area 120 of the second heat exchange section 12 of the first heat exchange channel 10 is formed as the outermost heat exchange channel of the heat exchange element 100. In this way, the U-shaped area 120 of the first heat exchange channel 10 can be used to exchange heat with the outer peripheral edge of the battery assembly 200, thereby improving the heat exchange effect on the peripheral edge of the battery assembly 200.

[0442] In the above-mentioned embodiment, by arranging the U-shaped area 120 of the second heat exchange section 12 of the first heat exchange channel 10 to be located at the outermost circumference of the heat exchange element 100, the second heat exchange section 12 can exchange heat on the outer circumference of the battery 1000, which is beneficial to improving the temperature difference of the battery 1000 in different environments and improving the service life of the battery 1000 to a certain extent.

[0443] According to some embodiments of the present application, the heat exchange element 100 includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along the first direction, and a heat exchange channel is defined on the inner side of each heat exchange tube.

[0444] For example, the number of heat exchange tubes may be one, two, three or more, and the number of heat exchange tubes may be designed according to the size of the battery assembly 200 .

[0445] Specifically, a heat exchange channel is defined in the heat exchange tube for the circulation of the heat exchange fluid. The heat exchange tube may have a variety of shapes, such as a round tube, a flat tube, etc.; at the same time, the heat exchange channel defined by the heat exchange tube may also have a variety of shapes, such as a U-shaped heat exchange channel, a meandering heat exchange channel, etc.

[0446] Further, the plurality of heat exchange tubes are arranged in parallel. For example, the inlet ends of the plurality of heat exchange tubes are connected to the flow-dividing cavity of the current collector 20 , and the outlet ends of the plurality of heat exchange tubes are all connected to the flow-collecting cavity of the current collector 20 .

[0447] Among them, multiple heat exchange tubes can be arranged in sequence along the first direction, for example, multiple heat exchange tubes can be arranged at intervals along the Y1 direction. Of course, multiple heat exchange tubes can also be arranged around each other, and further, multiple heat exchange tubes can be arranged around each other in the same plane.

[0448] In the above embodiment, by setting the heat exchanger 100 to include at least one heat exchange tube, not only can the process complexity of the heat exchanger 100 be reduced, thereby increasing the production rate of the heat exchanger 100, but also the fluid pressure drop in a single heat exchange tube can be reduced, thereby increasing the heat exchange efficiency. In addition, the tubular structure is simpler, lower in cost, and easier to process than the plate structure.

[0449] According to some embodiments of the present application, the heat exchange tube can be formed by bending a single tube.

[0450] The single tube bending forming means that the heat exchange tube can be formed by bending a single straight tube multiple times through a processing technology such as pressing and rolling. For example, a single straight tube can be bent at multiple preset positions to form a V shape, a U shape, etc. at the bending position. The bending shape of the single tube can be designed according to actual conditions.

[0451] In the above-mentioned embodiment, by setting the heat exchange tube to be formed by bending a single tube, the number of welding points of the heat exchanger 100 can be reduced, thereby reducing the risk of leakage of the heat exchanger 100 and improving the reliability of the use of the heat exchanger 100; at the same time, the operation process of bending a single tube is simpler than the manufacturing process of a plate structure, thereby significantly reducing the cost of the heat exchanger 100.

[0452] According to some embodiments of the present application, the heat exchange tube is bent in an arc shape at the bending position.

[0453] Among them, the arc-shaped bend can reduce the flow resistance of the fluid and reduce the pressure drop. Furthermore, the arc-shaped bend of the heat exchange tube at the bending position can increase the flow rate of the heat exchange fluid in the heat exchange channel, thereby increasing the heat exchange efficiency of the heat exchange element 100.

[0454] In the above embodiment, by setting the heat exchange tube to be bent in an arc shape at the bending position, the flow resistance of the fluid can be reduced, the pressure drop can be reduced, and the flow rate of the heat exchange fluid in the heat exchange channel can be increased, thereby increasing the heat exchange efficiency of the heat exchange element 100.

[0455] According to some embodiments of the present application, Fig.11 As shown, the bending angle of the heat exchange tube at the bending position is less than 180°.

[0456] For example, the bending angle of the heat exchange tube at the bending position may be 30°, 60°, 90°, 120°, 150° or 179°.

[0457] In the above embodiment, by setting the bending angle of the heat exchange tube at the bending position to be less than 180°, the probability of the heat exchange tube being damaged by bending can be reduced.

[0458] According to some embodiments of the present application, Fig.11 As shown, the heat exchange tube is bent in an arc at the bending position, and the ratio of the bending radius r of the heat exchange tube on the center line along the length direction to the width d of the heat exchange tube is greater than or equal to 0.6.

[0459] For example, the ratio of the bending radius r of the heat exchange tube on the center line along the length direction to the width d of the heat exchange tube can be 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 or above.

[0460] It should be noted that when the heat exchange tube is bent, under the action of internal pressure stress, the circular cross-section tends to be elliptical, producing a short axis and a long axis. The tube bending machine will generate additional stress at the long axis. The greater the ellipticity, that is, the greater the bending angle, the smaller the ratio of the bending radius to the width of the heat exchange tube, the greater the additional stress, and even a high stress area may be formed, resulting in local plastic deformation. When it reaches a certain value, the bearing capacity of the bent tube will be reduced and it will be damaged.

[0461] In the above-mentioned embodiment, by setting the ratio of the bending radius r of the heat exchange tube on the center line along the length direction to the width d of the heat exchange tube to be greater than or equal to 0.6, the heat exchange tube can be made less likely to be damaged by bending and stretching, thereby reducing the probability of damage to the heat exchange tube when bending, improving the structural strength of the heat exchange tube at the bending position, and improving the sealing performance of the heat exchange tube at the bending position.

[0462] According to some embodiments of the present application, a ratio of a bending radius r of the heat exchange tube to a width d of the heat exchange tube is greater than or equal to 0.8.

[0463] For example, the ratio of the bending radius of the heat exchange tube to the width of the heat exchange tube may be 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 or more.

[0464] In the above embodiment, by setting the ratio of the bending radius of the heat exchange tube to the width of the heat exchange tube to be greater than or equal to 0.8, the probability of damage to the heat exchange tube when bending can be further reduced, the structural strength of the heat exchange tube at the bending position can be further improved, and the sealing performance of the heat exchange tube at the bending position can be improved.

[0465] According to some embodiments of the present application, the wall thickness of the heat exchange tube at the bending position is greater than or equal to 0.2 mm.

[0466] For example, the wall thickness of the heat exchange tube at the bending position can be 0.2 mm, 0.3 mm, 0.4 mm or above.

[0467] In the above embodiment, by setting the wall thickness of the heat exchange tube at the bending position to be greater than or equal to 0.2 mm, the wall thickness of the heat exchange tube at the bending position can be prevented from being too thin, which is beneficial to ensuring the strength of the heat exchange tube at the bending position, and then effectively reducing the risk of leakage at the bending position of the heat exchange tube, thereby improving the reliability of the use of the heat exchange tube.

[0468] According to some embodiments of the present application, at the bending position of the heat exchange tube, the bending thinning rate of the wall thickness of the heat exchange tube is less than or equal to 50%.

[0469] The bending reduction rate is equal to the thickness loss of the heat exchange tube divided by the original thickness multiplied by 100%.

[0470] For example, the bending reduction rate of the wall thickness of the heat exchange tube may be 2%, 5%, 10%, 20%, 30%, 40% or 50%.

[0471] In the above-mentioned embodiment, by setting the bending thinning rate of the wall thickness of the heat exchange tube to be less than or equal to 50%, the wall thickness loss of the heat exchange tube can be within a preset range, and the wall thickness of the heat exchange tube at the bending position can be prevented from being too thin, which is beneficial to ensuring the strength of the heat exchange tube at the bending position, and thus effectively reducing the risk of leakage at the bending position of the heat exchange tube, thereby improving the reliability of the heat exchange tube.

[0472] According to some embodiments of the present application, the bending thinning rate of the heat exchange tube is less than or equal to 30%.

[0473] For example, the bending reduction rate of the wall thickness of the heat exchange tube may be 2%, 5%, 10%, 20% or 30%.

[0474] In the above embodiment, by setting the bending thinning rate of the heat exchange tube to be less than or equal to 30%, the wall thickness loss of the heat exchange tube after bending can be further reduced, and the strength of the heat exchange tube at the bending position can be further improved.

[0475] According to some embodiments of the present application, the heat exchange tube may be a flat tube or a harmonica tube.

[0476] It is understandable that in some embodiments, the heat exchange tube is a flat tube, and in other embodiments, the heat exchange tube is a harmonica tube. A flat tube refers to a heat exchange tube having a non-circular cross section perpendicular to its extension direction, such as an elliptical or rectangular cross section; a harmonica tube is a type of flat tube.

[0477] Specifically, the upper and lower surfaces of the flat tube are flat and the contact area is large, which can increase the heat transfer area of ​​the heat exchanger 100, and thus increase the heat exchange effect of the heat exchanger 100. At the same time, the flat tube is relatively light in weight when the bending and torsional strengths are the same. Therefore, using flat tubes as heat exchange tubes can also reduce the overall weight of the heat exchanger 100, and thus improve the energy density of the battery 1000.

[0478] Furthermore, a heat exchange channel may be formed inside the flat tube, or multiple heat exchange channels may be formed by providing a separator inside the flat tube. For example, a separator rib may be provided inside the flat tube and the harmonica tube, and the separator rib may extend along the length direction of the flat tube or the harmonica tube, and divide the heat exchange channel inside the flat tube or the harmonica tube into multiple sub-channels.

[0479] In the above-mentioned embodiment, by setting the heat exchange tube to a flat tube or a harmonica tube, the heat transfer area of ​​the heat exchange element 100 can be increased, thereby increasing the heat exchange effect of the heat exchange element 100; at the same time, the overall weight of the heat exchange element 100 can be reduced, thereby increasing the energy density of the battery 1000.

[0480] According to some embodiments of the present application, Fig.11 As shown, the wall thickness m of the heat exchange tube can be 0.2mm-3mm.

[0481] For example, the wall thickness m of the heat exchange tube may be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2.0 mm, 2.5 mm or 3 mm.

[0482] In the above-mentioned embodiment, by setting the wall thickness m of the heat exchange tube to 0.2mm-3mm, the heat exchange tube has an appropriate thickness, so that the wall thickness of the heat exchange tube is not too small, thereby ensuring the use strength of the heat exchange tube and effectively reducing the risk of damage to the heat exchange tube; the wall thickness of the heat exchange tube is not too large, which is beneficial to reducing the overall weight of the heat exchange tube, thereby reducing the overall weight of the battery 1000 and achieving lightweight battery 1000.

[0483] According to some embodiments of the present application, Fig.11 As shown, the wall thickness m of the heat exchange tube can be 0.5mm-1.2mm.

[0484] For example, the wall thickness m of the heat exchange tube may be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm or 1.2 mm.

[0485] In the above embodiment, by setting the wall thickness m of the heat exchange tube to 0.5 mm-1.2 mm, the strength of the heat exchange tube can be ensured while the overall weight of the heat exchange tube can be reduced, thereby achieving lightweight battery 1000.

[0486] According to some embodiments of the present application, the heat exchange element 100 may include a heat exchange plate, and the heat exchange channel may be formed on the heat exchange plate by stamping.

[0487] Among them, stamping is a forming method that uses a press and a die to apply external force to plates, strips, tubes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining a workpiece (stamping part) of the desired shape and size. In this way, the heat exchanger 100 does not need to be assembled, the number of parts of the heat exchanger 100 is reduced, the assembly steps of the battery 1000 are reduced, and the assembly rate of the battery 1000 is increased.

[0488] In the above-mentioned embodiment, the heat exchange flow channel is set on the heat exchange plate by stamping, which can reduce the process steps of the heat exchange component 100, thereby improving the production rate of the heat exchange component 100; at the same time, stamping is simple to make and has low material consumption, thereby reducing the production cost of the heat exchange component 100.

[0489] According to some embodiments of the present application, Fig.11 As shown, the width f of the heat exchange channel can be 3mm-200mm.

[0490] For example, the width f of the heat exchange channel may be 3 mm, 5 mm, 10 mm, 20 mm, 30 mm, 60 mm, 90 mm, 120 mm, 150 mm, 180 mm or 200 mm. The width of the heat exchange channel may be designed according to the layout of the heat exchange channel and the width of the battery cell 2011 .

[0491] In the above-mentioned embodiment, by setting the width f of the heat exchange channel to 3mm-200mm, the width of the heat exchange channel can be prevented from being too large, which is beneficial to the layout of the heat exchange channel and can meet the heat exchange effect required by the heat exchange element 100; the width of the heat exchange channel can also be prevented from being too small, so that the number of arrangements of the first heat exchange section 11 can be reduced, thereby reducing the overall cost of the heat exchange element 100.

[0492] According to some embodiments of the present application, the width f of the heat exchange channel is 5 mm-80 mm.

[0493] For example, the width f of the heat exchange channel may be 5 mm, 10 mm, 15 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm or 80 mm.

[0494] In the above embodiment, by setting the width f of the heat exchange channel to 5mm-80mm, it is beneficial to the layout of the heat exchange channel and can meet the heat exchange effect required by the heat exchange element 100. At the same time, it can also reduce the number of arrangements of the first heat exchange section 11, thereby reducing the overall cost of the heat exchange element 100.

[0495] According to some embodiments of the present application, the height of the heat exchange channel in the third direction is 1 mm-20 mm.

[0496] For example, the third direction can refer to Figure 3 As shown in the direction from top to bottom, the height of the heat exchange channel in the third direction can be 1 mm, 2 mm, 3 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm or 20 mm.

[0497] In the above-mentioned embodiment, by setting the height of the heat exchange flow channel in the third direction to 1mm-20mm, the height of the heat exchange element 100 can be prevented from being too small, thereby ensuring the flow rate of the heat exchange fluid in the heat exchange element 100, thereby ensuring the heat exchange effect of the heat exchange element 100; at the same time, the height of the heat exchange element 100 is not too large, which is beneficial to reducing the space occupied by the heat exchange element 100 and realizing the miniaturization of the battery 1000.

[0498] According to some embodiments of the present application, the height of the heat exchange channel in the third direction is 4 mm-6 mm.

[0499] For example, the height of the heat exchange channel in the third direction may be 4 mm, 5 mm or 6 mm.

[0500] In the above embodiment, by setting the height of the heat exchange channel in the third direction to 4 mm-6 mm, the heat exchange effect of the heat exchange element 100 can be guaranteed, and the space occupied by the heat exchange element 100 can be reduced, thereby realizing the miniaturization of the battery 1000.

[0501] According to some embodiments of the present application, the number of heat exchange channels is 2 to 4.

[0502] For example, the number of heat exchange channels may be 2, 3 or 4, wherein the number of heat exchange channels may be designed according to actual needs.

[0503] In the above embodiment, by setting the number of heat exchange channels to 2 to 4, the length of a single heat exchange channel can be reduced, thereby reducing the friction resistance of the heat exchange channel and the pressure drop, thereby improving the heat exchange efficiency of the heat exchange element 100.

[0504] Reference below Figure 12-13 The current collector 20 according to an embodiment of the present application is described. Fig.12 A schematic diagram of a current collector 20 according to an embodiment of the present application, Fig.13 A schematic diagram of the current collector 20 according to an embodiment of the present application from another angle.

[0505] According to some embodiments of the present application, Figure 12-13 As shown, the heat exchange component 100 may also include a collector 20, which includes: a tube body 21, a plurality of first flow channel interfaces 22, a plurality of second flow channel interfaces 23 and a partition structure 24, wherein the plurality of first flow channel interfaces 22 correspond one-to-one to and are connected with the first inlets and outlets of the plurality of heat exchange channels; the plurality of second flow channel interfaces 23 correspond one-to-one to and are connected with the second inlets and outlets of the plurality of heat exchange channels, and, along the extension direction of the tube body 21, at least two second flow channel interfaces 23 are respectively located on both sides of the plurality of first flow channel interfaces 22; the partition structure 24 is arranged inside the tube body 21, and the partition structure 24 separates the first flow channel interfaces 22 and the second flow channel interfaces 23 inside the tube body 21, and the plurality of second flow channel interfaces 23 are connected inside the tube body 21.

[0506] Specifically, the pipe body 21 is used for collecting and dividing the heat exchange fluid; the first flow channel interface 22 and the second flow channel interface 23 are arranged on the pipe body 21, and the first flow channel interface 22 and the second flow channel interface 23 are respectively connected to the inlet and outlet of the heat exchange flow channel, and are used to input and output the heat exchange fluid into and out of the collecting pipe. The partition structure 24 is arranged in the pipe body 21, and separates the first flow channel interface 22 and the second flow channel interface 23 inside the pipe body 21, that is, the first flow channel interface 22 and the second flow channel interface 23 are not connected in the pipe body 21, so that the first flow channel interface 22 and the second flow channel interface 23 can be the input end and the output end of the heat exchange flow channel respectively, so that the pipe body 21 and the heat exchange flow channel form a complete channel, so that the liquid can enter the heat exchange flow channel from the pipe body 21 for heat exchange, and then be discharged from the pipe body 21 to complete the heat exchange work. Therefore, the work of liquid inlet and liquid discharge can be completed by using one pipe body 21, so that the number of collecting pipes used can be reduced, thereby reducing the production cost and occupied space of the heat exchange management component.

[0507] In addition, there are multiple first flow channel interfaces 22 and second flow channel interfaces 23, for example, the number of first flow channel interfaces 22 and second flow channel interfaces 23 can be two, three or more. Among them, multiple second flow channel interfaces 23 are connected inside the pipe body 21, and along the extension direction of the pipe body 21, at least two second flow channel interfaces 23 are respectively located on both sides of the first flow channel interface 22, that is, at least two second flow channel interfaces 23 are arranged at both ends of the pipe body 21, and multiple first flow channel interfaces 22 are arranged between at least two second flow channel interfaces 23, so that the heat exchange fluid can flow out of the pipe body 21 from the second flow channel interfaces 23 on both sides, and then flow back to the pipe body 21 from the middle first flow channel interface 22 after heat exchange, or the heat exchange fluid can flow out of the pipe body 21 from the first flow channel interface 22 in the middle area of ​​the pipe body 21, and then flow back to the pipe body 21 from the second flow channel interfaces 23 at both ends of the pipe body 21 after heat exchange. In this way, the heat exchange fluid can flow from the surrounding areas to the middle area of ​​the battery 1000 to achieve heat exchange, or the heat exchange fluid can flow from the middle area to the surrounding areas of the battery 1000 to achieve heat exchange, thereby improving the temperature uniformity of the battery 1000, thereby reducing the assembly steps and installation space of the thermal management components, improving the temperature uniformity of the battery 1000, and extending the service life of the battery 1000.

[0508] In the above-mentioned embodiment, by setting a current collector 20, a plurality of first flow channel interfaces 22 and a plurality of second flow channel interfaces 23 are separated by a partition structure 24, and the plurality of second flow channel interfaces 23 are connected in the tube body 21, so that the first flow channel interface 22 and the second flow channel interface 23 can be respectively formed as the input end and the output end of the heat exchange flow channel, and then the work of liquid inlet and liquid discharge can be completed by using one tube body 21, thereby reducing the number of current collecting pipes used, and at the same time, the use of external connecting pipes can also be reduced, thereby reducing the production cost and occupied space of the heat exchange management component, and reducing the assembly steps and installation space of the thermal management component; in addition, the second flow channel interface 23 includes a plurality of, and at least two second flow channel interfaces 23 are located on both sides of the first flow channel interface 22, so that the heat exchange fluid can flow from the surrounding area of ​​the battery 1000 to the middle area to realize heat exchange, and the heat exchange fluid can also flow from the middle area of ​​the battery 1000 to the surrounding area to realize heat exchange, thereby improving the temperature uniformity of the battery 1000 and extending the service life of the battery 1000.

[0509] According to some embodiments of the present application, Figure 12-13 As shown, the tube body 21 is divided into a first space 211 and a second space 212 which are independent of each other by a partition structure 24. The first space 211 is connected to the first flow channel interface 22, and the second space 212 is connected to the second flow channel interface 23. Along the extension direction of the tube body 21, the second space 212 includes a first section, a second section and a third section which are connected in sequence. The first section and the third section are respectively located on both sides of the first space 211, and the second section is side by side with the first space 211.

[0510] The first space 211 and the second space 212 are independent of each other and are not connected to each other, forming two independent flow channels. The second space 212 includes a first section, a second section and a third section that are connected in sequence. The first section and the third section are both provided with a second flow channel interface 23. The second space 212 can connect multiple second flow channel interfaces 23. The first space 211 and the second section are arranged side by side, and the first space 211 is connected to the first flow channel interface 22, and the first flow channel interface 22 is arranged in the middle of the multiple second flow channel interfaces 23.

[0511] For example Fig.12 As shown, the first flow channel interface 22 and the second flow channel interface 23 each include two, and the two second flow channel interfaces 23 are arranged on both sides of the two first flow channel interfaces 22. In the length direction of the tube body 21, the second space 212 is "C"-shaped, and the first space 211 is arranged parallel to the second section and is arranged between the first section and the third section.

[0512] In the above-mentioned embodiment, by setting the first space 211 and the second space 212 to be independent of each other and not connected to each other, two independent flow channels can be formed inside the tube body 21, so that the inflow and outflow of the heat exchange fluid do not interfere with each other. At the same time, the first space 211 and the second space 212 are arranged side by side, thereby reducing the size of the tube body 21, thereby reducing the space occupied by the collecting pipe.

[0513] According to some embodiments of the present application, Figure 12-13 As shown, the partition structure 24 includes a first partition plate 241 and a second partition plate 242. The first partition plate 241 is used to separate the second section and the first space 211. The second partition plate 242 includes at least two and is respectively located at both ends of the first partition plate 241 along the extension direction of the tube body 21. The second partition plate 242 is used to separate the first section and the first space 211, as well as the third section and the first space 211.

[0514] Specifically, the first partition plate 241 can be formed as a plate body of a certain size. The size of the first partition plate 241 can be set according to the position size of the pipe body 21 and the first flow channel interface 22. The first partition plate 241 is arranged along the length direction of the pipe body 21 (for example, Fig.12 The first partition plate 241 extends in the Y1 direction as shown in the figure, and both ends of the first partition plate 241 in the width direction are sealed and connected to the inner wall surface of the tube body 21. Fig.13 In the X1 direction shown in FIG, it is used to separate the second section and the first space 211 so that the second section and the first space 211 are arranged side by side in the width direction of the tube body 21.

[0515] The second partition plates 242 include at least two, that is, the second partition plates 242 may include two, three or more. When the second partition plates 242 include only two, the second partition plates 242 are respectively located at both ends of the first partition plate 241 in the length direction, and are sealed and connected to the first partition plate 241 and the inner wall surface of the tube body 21, so that the first space 211 and the second space 212 can be completely independent and not connected to each other.

[0516] In the above embodiment, by providing the first partition plate 241 and the second partition plate 242 , two independent spaces can be formed inside the tube body 21 , so that the inflow and outflow of liquids do not interfere with each other, thereby improving the heat exchange effect of the battery 1000 .

[0517] Reference below Figure 14-17 The mounting member 19 according to the embodiment of the present application is described. Fig.14 is a schematic diagram of a heat exchange element 100 according to another embodiment of the present application. Fig.15 yes Fig.14 The enlarged view of the circled A in FIG. Fig.16 yes Fig.14 A schematic diagram of the heat exchange element 100 from another angle is shown in FIG. Fig.17 yes Fig.16 An enlarged view of the circled B.

[0518] According to some embodiments of the present application, Figure 14-17 As shown, the heat exchange element 100 further includes: a first pipe portion, a second pipe portion and a mounting member 19 .

[0519] Among them, one end of the first tube portion is formed as a first inlet and outlet of the heat exchange channel; one end of the second tube portion is formed as a second inlet and outlet of the heat exchange channel.

[0520] Specifically, the first tube portion and the second tube portion are mainly used for the current collector 20, and are used to provide heat exchange fluid to the heat exchange channel or discharge the heat exchange fluid after heat exchange, so that the heat exchange element 100 can achieve heat exchange. Among them, the first inlet and outlet and the second inlet and outlet can be used for the inlet and outlet of the heat exchange fluid. When the first inlet and outlet are used as the inlet end of the heat exchange fluid, the second inlet and outlet are used as the outlet end of the heat exchange fluid; when the first inlet and outlet are used as the outlet end of the heat exchange fluid, the second inlet and outlet are used as the inlet end of the heat exchange fluid.

[0521] The mounting member 19 is configured to be sealed and connected to the box body 300 of the battery 1000. A through hole is formed on the mounting member 19 to communicate with the space on both sides of the mounting member 19. The first tube portion and / or the second tube portion passes through the through hole and is sealed and connected to the periphery of the through hole. In other words, at least one of the first tube portion and the second tube portion passes through the through hole and is sealed and connected to the through hole.

[0522] Specifically, the spaces on both sides of the mounting member 19 are respectively the space for placing the heat exchange member 100 and the space for connecting the first inlet and outlet and the second inlet and outlet to the external pipeline, wherein the mounting member 19 is configured to be sealed and connected to the box body 300 of the battery 1000, thereby making the spaces on both sides of the mounting member 19 independent of each other, so that when leakage occurs at the connection between the first inlet and outlet and the second inlet and outlet and the current collector 20, the heat exchange fluid will not enter the space for placing the heat exchange member 100, thereby effectively reducing the risk of corrosion of the heat exchange member 100.

[0523] In the prior art, in order to reduce the risk of corrosion of the heat exchanger 100, the gaps between the first pipeline, the second pipeline and the box body 300 are usually sealed. This requires a large amount of sealing structural adhesive and more manpower, resulting in low production efficiency and high production cost of the battery 1000.

[0524] In the above embodiment, after the mounting member 19 is sealed with the first pipeline and the second pipeline, the mounting member 19 is then sealed with the box body 300. In this way, not only the structural strength at the position of the first pipeline and the second pipeline is increased, but also the labor and materials required for sealing are reduced. Therefore, the production rate of the battery 1000 can be improved and the labor cost of producing the battery 1000 can be reduced.

[0525] In the above-mentioned embodiment, by providing the mounting member 19, it is no longer necessary to separately seal the first tube portion and the second tube portion with the box body 300 when assembling the battery 1000. In this way, the labor and materials required for assembling the battery 1000 can be reduced, thereby increasing the production rate of the battery 1000 and reducing the labor cost of producing the battery 1000.

[0526] According to some embodiments of the present application, Figure 14-17 As shown, the mounting member 19 has a cavity with an opening on one side, and the mounting member 19 has a mounting plate arranged opposite to the opening of the cavity, and a through hole passes through the mounting plate. The mounting member 19 is suitable for being arranged between the box body 401 and the bottom guard plate 302 of the box body 300, and the outer peripheral surface of the mounting member 19 is suitable for being sealed and connected with the box body 401 and the bottom guard plate 302.

[0527] The mounting member 19 has a cavity with one side open. It should be noted that the open side of the mounting member 19 can face one side of the space where the first entrance and the second entrance are located, or can face a side of the space away from the first entrance and the second entrance.

[0528] Furthermore, the opening side of the mounting member 19 faces a space on one side away from the first inlet and the second inlet, for example, the opening of the cavity is arranged away from the current collector 20 , so that dust and other impurities can be effectively prevented from accumulating in the mounting member 19 .

[0529] The mounting member 19 is suitable for being arranged between the box body 401 and the bottom guard plate 302, that is, the heat exchanger 100 is arranged between the bottom wall of the box body 401 and the guard plate, that is, the heat exchanger 100 is arranged outside the box body 401, so that the damage to the battery cells 2011 caused by leakage of the heat exchanger 100 can be effectively reduced. In addition, the bottom guard plate 302 is arranged on the lower side of the box body 401, which can further increase the structural strength of the bottom of the battery 1000 and increase the bearing strength of the bottom plate. At the same time, it can also protect the bottom from impact, which can effectively reduce the safety problems caused by the bottom impact of multiple battery cells 2011 and the heat exchanger 100.

[0530] The outer peripheral surface of the mounting member 19 is suitable for sealing connection with the box body 401 and the bottom guard plate 302. It should be noted that the outer peripheral surface of the mounting member 19 can be designed according to the specific structure of the box body 401 and the bottom guard plate 302. For example, the bottom of the box body 401 and the bottom guard plate 302 are both flat plates, and the outer peripheral surface of the mounting member 19 is also formed in a flat plate shape, so that it can be sealed and connected with the bottom plate and the bottom guard plate 302, thereby increasing the sealing performance of the bottom plate and the bottom guard plate 302.

[0531] For example Figure 14-17 As shown, the mounting member 19 includes a first plate, a second plate and a mounting plate, the mounting plate is vertically arranged, the first plate is horizontally arranged and connected to one end of the mounting plate in the Z direction, the second plate is horizontally arranged and connected to the other end of the mounting plate in the Z direction, and the first plate and the second plate are located on the same side of the mounting plate in the thickness direction and are arranged at intervals along the Z direction, a plurality of through holes are formed on the mounting plate, the plurality of through holes are respectively a first through hole and a second through hole, the first pipe portion is passed through the first through hole, and the second pipe portion is passed through the second through hole.

[0532] Furthermore, the first tube portion is connected to the periphery of the first through hole by welding, and the second tube portion is connected to the periphery of the second through hole by welding.

[0533] Further, the number of the first through holes is one or more, and the first through holes correspond to the first tube parts one by one. The number of the second through holes is one or more, and the second through holes correspond to the second tube parts one by one.

[0534] Further, one end of the first plate is connected to the mounting plate and the other end extends toward the first heat exchange section 11, and one end of the second plate is connected to the mounting plate and the other end extends toward the first heat exchange section 11. Further, in the direction from the mounting member 19 toward the first heat exchange section 11, the length of the first plate is different from the length of the second plate, for example, the length of the first plate is less than the length of the second plate, specifically, the length of the first plate is less than two-thirds of the length of the second plate.

[0535] Furthermore, the first plate, the second plate and the mounting plate are integrally formed.

[0536] Furthermore, the mounting member 19 further includes a stopper, which is arranged at both ends of the mounting plate in the length direction, and the stopper is connected and sealed to the mounting plate, the first plate and the second plate, for example, the stopper and the mounting plate, the first plate and the second plate can be welded or bonded. The mounting plate, the first plate, the second plate and the two stoppers enclose a cavity.

[0537] Among them, the side surface of the stopper facing away from the mounting plate is formed as a slope, the length of the first plate is smaller than the length of the second plate, the end of the slope facing the first plate is flush with the end of the first plate facing away from the mounting plate, and in the direction from the first plate toward the second plate, the other end of the slope extends obliquely to the end of the second plate facing away from the mounting plate.

[0538] In addition, it should be noted that a seal is provided around the heat exchanger 100, and the seal extends along the circumference of the heat exchanger 100, and the seal extends into a ring shape, or after the seal surrounds the heat exchanger 100, both ends of the seal are connected to the mounting member 19. The seal can be a sealant.

[0539] In the above-mentioned embodiment, by setting the mounting member 19 as a cavity with an opening on one side, the overall weight of the mounting member 19 can be reduced, and then the overall weight of the entire battery 1000 can be reduced, thereby achieving lightweight battery 1000; at the same time, the mounting member 19 is suitable for being set between the box body 401 and the bottom guard plate 302 of the box body 300, so that the bottom of the box body 401 can isolate the heat exchange component 100 and the multiple battery cells 2011, thereby, when the heat exchange component 100 is damaged, it will not affect the multiple battery cells 2011, thereby reducing the cost of repairing the battery 1000.

[0540] Please refer again Figures 4 to 8 In the embodiment of the present application, the battery 1000 is provided with the heat exchange element 100 of the first embodiment described above, and the second heat exchange segment 12 is bent and arranged, and the first heat exchange segment 11 is bent and arranged in the area surrounded by the second heat exchange segment 12. When the heat exchange element 100 exchanges heat with the battery assembly 200, the outer second heat exchange segment 12 can be opposite to the outer battery cells of the battery, and the first heat exchange segment 11 can be opposite to the internal battery cells, so that the heat exchange element 100 can make up for the internal and external temperature difference caused by the heat exchange between the outer battery cells 2011 and the environment, so that the heat exchange effect of the battery cells 2011 on the periphery of the battery assembly 200 and the battery cells 2011 inside the battery assembly 200 tends to be consistent, thereby improving the temperature uniformity of the battery 1000, thereby improving the service life of the battery 1000 to a certain extent, thereby improving the overall performance of the battery 1000.

[0541] According to some embodiments of the present application, Figure 18-Figure 24 As shown, the battery 1000 specifically includes: a battery assembly 200, the battery assembly 200 includes a battery cell 201, and the battery cell 201 includes a battery cell 201 along a third direction (for example Fig.24 The heat exchange element 100 is disposed on the battery assembly 200 in the fourth direction (eg, Fig.24 One side on the Z direction shown in the figure and heat exchange with the battery assembly 200; wherein the third direction and the fourth direction are set at an angle.

[0542] Specifically, the battery assembly 200 is mainly used to store and release energy and is the core component of the battery 1000. The heat exchanger 100 is used to perform heat exchange with the battery assembly 200 so that the temperature of the battery assembly 200 can be maintained within the safe operating temperature, thereby improving the reliability and service life of the battery assembly 200.

[0543] In addition, “the third direction and the fourth direction are arranged at an angle” is intended to indicate that the third direction and the fourth direction may be arranged vertically, for example Fig.24 As shown, the third direction may be the thickness direction of the battery cell 2011, that is, Fig.24 The fourth direction may be the height direction of the battery cell 2011, that is, Fig.24 Thus, a plurality of battery cells 2011 are stacked and arranged along the thickness direction of the battery cells 2011 to form a battery unit 201, and the heat exchange element 100 is arranged on one side of the height direction of the battery assembly 200 for heat exchange with the battery assembly 200. The third direction and the fourth direction may also be arranged in a non-perpendicular manner, for example, the third direction and the fourth direction may be arranged at an angle of 30°, 60° or 80°.

[0544] Optionally, the number of battery cells 201 may be one or more, for example, the number of battery cells 201 may be one, two, three or more.

[0545] In the above embodiment, by arranging the heat exchange element 100 on one side of the battery assembly 200 in the fourth direction and exchanging heat with the battery assembly 200, the temperature of the battery assembly 200 can be kept within the safe operating temperature, thereby improving the reliability and service life of the battery assembly 200.

[0546] According to some embodiments of the present application, Figure 4 and Fig.18 As shown, a plurality of battery cells 2011 located at the outermost periphery of the battery assembly 200 constitute a peripheral battery cell group, and at least a portion of the second heat exchange segment 12 is in contact with the peripheral battery cell group.

[0547] It is understandable that the second heat exchange section 12 can be at least partially attached to the peripheral battery monomer group, or can be fully attached to the peripheral battery monomer group. Among them, since the periphery of the battery assembly 200 dissipates more heat to the environment, the temperature of the peripheral battery monomer group is lower than the temperature of the inner battery monomer, and the temperature of the heat exchange fluid in the second heat exchange section 12 is always the highest. Therefore, at least part of the second heat exchange section 12 is attached to the peripheral battery monomer group, which can improve the heat exchange efficiency of the peripheral battery monomer group, and further balance the temperature difference of the battery assembly 200 caused by heat dissipation.

[0548] In the above embodiment, by arranging at least a portion of the second heat exchange section 12 to fit the peripheral battery cell group, the heat exchange efficiency of the peripheral battery cell group can be improved, thereby further balancing the temperature difference of the battery assembly 200 caused by heat dissipation.

[0549] According to some embodiments of the present application, Figure 7 and Fig.19 As shown, the battery assembly 200 includes a battery unit 201, and all battery cells 2011 of the battery unit 201 together form a peripheral battery cell, or the battery assembly 200 includes a plurality of battery cells 201, and the plurality of battery cells 201 are arranged along a fifth direction (eg Fig.19 The battery cells 201 are arranged in sequence along the Y2 direction shown in the figure, and the battery cells 2011 located at the outermost periphery of the battery assembly 200 together form a peripheral battery cell. The third direction, the fourth direction and the fifth direction are arranged at an angle to each other.

[0550] Among them, the number of battery cells 201 included in the battery assembly 200 can be designed according to actual conditions, and the number of battery cells 201 can be one or more, for example, the number of battery cells 201 can be one, two, three or more.

[0551] Specifically, when the battery assembly 200 includes a battery unit 201, all battery cells 2011 of the battery unit 201 together form a peripheral battery cell. At this time, the entire second heat exchange section 12 and the first heat exchange section 11 exchange heat with the peripheral battery cell. Specifically, the second heat exchange section 12 exchanges heat with the periphery of the peripheral battery cell, and the first heat exchange section 11 exchanges heat with the middle position of the peripheral battery cell.

[0552] When the battery assembly 200 includes multiple battery cells 201, the multiple battery cells 201 located at the outermost part of the battery assembly 200 together form a peripheral battery cell, thereby limiting the heat exchange position of the second heat exchange section 12, which is beneficial to the layout of the heat exchange flow channel.

[0553] In the above-mentioned embodiment, by setting the battery assembly 200 to include a battery unit 201, all the battery cells 2011 of the battery unit 201 together form a peripheral battery cell. At this time, all of the second heat exchange section 12 and the first heat exchange section 11 exchange heat with the peripheral battery cell, thereby not limiting the specific structure and layout of the second heat exchange section 12 and the first heat exchange section 11, thereby reducing the layout complexity of the first heat exchange channel 10; by setting multiple battery units 201 and multiple battery cells 2011 located at the outermost periphery of the battery assembly 200 together form a peripheral battery cell, thereby, the heat exchange position of the second heat exchange section 12 can be limited, which is beneficial to the layout of the heat exchange channel.

[0554] In the above embodiment, multiple battery cells 201 are arranged at the outermost battery cells 2011 of the battery assembly 200 to form peripheral battery cells, thereby limiting the heat exchange position of the second heat exchange section 12, which is beneficial to the layout of the heat exchange flow channel.

[0555] Please refer again Figure 4 and Fig.18 The peripheral battery cell group includes a first group of battery cells 202, a second group of battery cells 203 and a third group of battery cells 204 which are arranged adjacent to each other. The first group of battery cells 202 includes a plurality of battery cells 2011 which are stacked along a third direction, the second group of battery cells 203 includes a plurality of battery cells 2011 which are stacked along a fifth direction, and the third group of battery cells 204 includes a plurality of battery cells 2011 which are stacked along a fifth direction.

[0556] For example Fig.18 As shown, the third direction may be the thickness direction of the battery cell 2011, that is, Fig.18 The fifth direction may be the length direction of the battery cell 2011, that is, Fig.18 Thus, the first group of battery cells 202 includes a plurality of battery cells 2011 stacked in the thickness direction of the battery cells 2011, the second group of battery cells 203 includes a plurality of battery cells 2011 stacked in the length direction of the battery cells 2011, and the third group of battery cells 204 includes a plurality of battery cells 2011 stacked in the length direction of the battery cells 2011. Fig.18 As shown, the first group of battery cells 202 is arranged at one end of the battery assembly 200 in the Y2 direction; the second group of battery cells 203 and the third group of battery cells 204 are respectively arranged at the two ends of the battery assembly 200 in the X1 direction.

[0557] The second heat exchange section 12 includes a second heat exchange part 121, a third heat exchange part 122 and a fourth heat exchange part 125 that are connected to each other; the second heat exchange part 121 extends and fits on the first group of battery cells 202 to enable heat exchange, and / or the third heat exchange part 122 extends and fits on the second group of battery cells 203 to enable heat exchange, and / or the fourth heat exchange part 125 extends and fits on the third group of battery cells 204 to enable heat exchange.

[0558] It can be understood that when the second heat exchange section 12 is in contact with the peripheral battery monomer for heat exchange, only one of the second heat exchange section 121, the third heat exchange section 122 or the fourth heat exchange section 125 can be in contact with the peripheral battery monomer, such as the second heat exchange section 121 is in contact with the first group of battery monomers 202 for heat exchange, or the third heat exchange section 122 is in contact with the second group of battery monomers 203 for heat exchange, or the fourth heat exchange section 125 is in contact with the third group of battery monomers 204 for heat exchange; or two of the second heat exchange section 121, the third heat exchange section 122 or the fourth heat exchange section 125 can be in contact with the peripheral battery monomer, such as the second heat exchange section 121 is in contact with the first group of battery monomers 202 for heat exchange, the third heat exchange section 122 is in contact with the fourth group of battery monomers 205 for heat exchange. Two groups of battery cells 203 are fitted together for heat exchange, or the second heat exchange unit 121 is fitted together with the first group of battery cells 202 for heat exchange, and the fourth heat exchange unit 125 is fitted together with the third group of battery cells 204 for heat exchange, or the third heat exchange unit 122 is fitted together with the second group of battery cells 203 for heat exchange, and the fourth heat exchange unit 125 is fitted together with the third group of battery cells 204 for heat exchange; the second heat exchange unit 121, the third heat exchange unit 122 and the fourth heat exchange unit 125 can also be fitted together with peripheral battery cells, such as the second heat exchange unit 121 is fitted together with the first group of battery cells 202 for heat exchange, the third heat exchange unit 122 is fitted together with the second group of battery cells 203 for heat exchange, and the fourth heat exchange unit 125 is fitted together with the third group of battery cells 204 for heat exchange.

[0559] In the above-mentioned embodiment, since the first group of battery ...

Claims

1. A heat exchange component for a battery, the battery comprising a battery assembly (200), the battery assembly (200) comprising a plurality of battery cells (2011), characterized in that: The heat exchange element comprises a first heat exchange channel (10), the first heat exchange channel (10) comprising a first heat exchange section (11) and a second heat exchange section (12); the second heat exchange section (12) is arranged in a bent manner, the first heat exchange section (11) is arranged in a bent manner within an area surrounded by the second heat exchange section (12), and is connected to the second heat exchange section (12) in a bent manner; The second heat exchange section (11) is configured to be opposite to and cooperate with the battery cells (2011) located on the peripheral side of the battery assembly (200), and the first heat exchange section (11) is configured to be opposite to and cooperate with the corresponding battery cells (2011) within the area enclosed by the second heat exchange section (12).

2. The heat exchange element according to claim 1, characterized in that: The second heat exchange section (12) comprises: a first flow channel portion (1201) and a second flow channel portion (1202), wherein the first flow channel portion (1201) extends along a first direction and two ends thereof are respectively connected to the first heat exchange section (11) and the second flow channel portion (1202), and the second flow channel portion (1202) extends along a second direction, and the first direction intersects with the second direction, wherein at least one of the first flow channel portion (1201) and the second flow channel portion (1202) is configured to be opposite to the battery cell (2011) and cooperate in heat exchange.

3. The heat exchange element according to claim 2, characterized in that: The first flow channel portion (1201) is configured to be opposite to the battery cell (2011) and to cooperate with the battery cell (2011) in heat exchange, and the second flow channel portion (1202) is configured to be arranged on the outside of the battery assembly (200).

4. The heat exchange element according to claim 3, characterized in that: The battery box (300) defines a battery compartment and an electrical compartment that are spaced apart from each other, and the second flow channel portion (1202) is configured to at least partially extend into the electrical compartment.

5. The heat exchange element according to claim 4, characterized in that: The second flow channel portion (1202) is configured to be opposite to the high-voltage box in the electrical compartment and to cooperate with the heat exchange.

6. The heat exchange element according to claim 1, characterized in that: The second heat exchange section (12) is located at the outermost side in the circumferential direction of the first heat exchange channel (10).

7. The heat exchange element according to claim 1, characterized in that: The first heat exchange section (11) and the second heat exchange section (12) are bent in the same plane.

8. The heat exchange element according to claim 1, characterized in that: The first heat exchange section (11) comprises a plurality of first heat exchange parts (111), and the plurality of first heat exchange parts (111) are arranged at intervals and are bent and connected in sequence.

9. The heat exchange element according to claim 8, characterized in that: A plurality of the first heat exchange parts (111) are arranged at intervals along a first direction, and each of the first heat exchange parts (111) extends linearly along a second direction, and the first direction and the second direction are arranged at an angle.

10. The heat exchange element according to claim 8, characterized in that: The first heat exchange section (11) further comprises: a first bending portion (112), the first bending portion (112) being arc-shaped and bent and connected between two adjacent first heat exchange portions (111).

11. The heat exchange element according to claim 1, characterized in that: The second heat exchange section (12) is bent to form a U-shaped area, and the first heat exchange section (11) is bent and arranged in the U-shaped area.

12. The heat exchange element according to claim 11, characterized in that: The second heat exchange section (12) comprises: a second heat exchange portion (121), a third heat exchange portion (122) and a fourth heat exchange portion (125); the second heat exchange portion (121) extends along a first side circumference of the first heat exchange section (11); the third heat exchange portion (122) is connected between the second heat exchange portion (121) and the first heat exchange section (11), and extends along a second side circumference of the first heat exchange section (11); a first end of the third heat exchange portion (122) is connected to the second heat exchange portion (121) at an angle, and a second end of the third heat exchange portion (122) is connected to the first heat exchange section (11) at an angle; the fourth heat exchange portion (125) is in communication with the second heat exchange portion (121), is connected to the second heat exchange portion (121) at an angle, and extends along a third side circumference of the first heat exchange section (11).

13. The heat exchange element according to claim 12, characterized in that: The first heat exchange section (11) comprises a plurality of first heat exchange parts (111), and the plurality of first heat exchange parts (111) are bent and connected in sequence in a first direction; wherein: The second heat exchange portion (121) is located on one side of the plurality of first heat exchange portions (111) along the first direction, the third heat exchange portion (122) is located on one side of the plurality of first heat exchange portions (111) along the second direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange portion (122) is connected to one end of the second heat exchange portion (121) along the second direction, a second end of the third heat exchange portion (122) is connected to one of the plurality of first heat exchange portions (111) that is farthest from the second heat exchange portion (121) along the first direction, the fourth heat exchange portion (125) is located on the other side of the plurality of first heat exchange portions (111) along the second direction, one end of the fourth heat exchange portion (125) is connected to one end of the second heat exchange portion (121) that is farthest from the third heat exchange portion (122), and the other end of the fourth heat exchange portion (125) extends along the first direction toward a direction away from the second heat exchange portion (121); or, The second heat exchange portion (121) is located on one side of the plurality of first heat exchange portions (111) along the second direction, and the third heat exchange portion (122) is located on one side of the plurality of first heat exchange portions (111) along the first direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange portion (122) is connected to one end of the second heat exchange portion (121) along the first direction, and a second end of the third heat exchange portion (122) is connected to one of the plurality of first heat exchange portions (111) that is closest to the third heat exchange portion (122) along the first direction; the fourth heat exchange portion (125) is located on the other side of the plurality of first heat exchange portions (111) along the first direction, one end of the fourth heat exchange portion (125) is connected to one end of the second heat exchange portion (121) that is away from the third heat exchange portion (122), and the other end of the fourth heat exchange portion (125) extends along the second direction toward a direction away from the second heat exchange portion (121).

14. The heat exchange element according to claim 13, characterized in that: The third heat exchange portion (122) and the fourth heat exchange portion (125) are extended along the first direction, and the first heat exchange portion (111) and the second heat exchange portion (121) are both extended along the second direction; or, The first heat exchange portion (111), the third heat exchange portion (122) and the fourth heat exchange portion (125) are all extended along the second direction, and the second heat exchange portion (121) is extended along the first direction.

15. The heat exchange element according to claim 14, characterized in that: The third heat exchange portion (122) and the fourth heat exchange portion (125) are both extended along a first direction, and in the first direction, the length of the fourth heat exchange portion (125) is less than or equal to the length of the third heat exchange portion (122); or, The first heat exchange portion (111) and the third heat exchange portion (122) extend along the second direction, the second heat exchange portion (121) extends along the first direction, and in the second direction, the length of the third heat exchange portion (122) is greater than or equal to the length of the first heat exchange portion (111).

16. The heat exchange element according to claim 14, characterized in that: The fourth heat exchange portion (125) extends along the first direction and extends to a position close to one of the plurality of first heat exchange portions (111) that is farthest from the second heat exchange portion (121).

17. The heat exchange element according to claim 13, characterized in that: The second heat exchange section (12) further comprises: a second bending portion (123) and a third bending portion (124); the second bending portion (123) and the third bending portion (124) are both arc-shaped, and the second bending portion (123) is connected between the first end of the third heat exchange portion (122) and the second heat exchange portion (121), and the third bending portion (124) is connected between the second end of the third heat exchange portion (122) and the first heat exchange portion (111).

18. The heat exchange element according to claim 12, characterized in that: The second heat exchange section (12) further includes: a fifth heat exchange portion (127), wherein the fifth heat exchange portion (127) extends along a fourth side periphery of the first heat exchange section (11) and closes at least a portion of an opening of the U-shaped region formed by the second heat exchange portion (121), the third heat exchange portion (122) and the fourth heat exchange portion (125).

19. The heat exchange element according to claim 18, characterized in that: The fifth heat exchange portion (127) is arranged opposite to the second heat exchange portion (121), The fifth heat exchange portion (127) is connected between the second end of the third heat exchange portion (122) and the first heat exchange section (11), and is connected to the third heat exchange portion (122) at an angle, and is connected to the first heat exchange section (11) at an angle; or, one end of the fifth heat exchange portion (127) is connected to an end of the fourth heat exchange portion (125) away from the second heat exchange portion (121), and the fifth heat exchange portion (127) is connected to the fourth heat exchange portion (125) at an angle.

20. The heat exchange element according to claim 12, characterized in that: The first heat exchange channel (10) further comprises: a third heat exchange section (13); the first heat exchange section (11) is connected between the third heat exchange section (13) and the second heat exchange section (12); and the third heat exchange section (13) is connected to the first heat exchange section (11) at an angle.

21. The heat exchange element according to claim 20, characterized in that: The first heat exchange section (11) comprises a plurality of first heat exchange parts (111), and the plurality of first heat exchange parts (111) are bent and connected in sequence in a first direction; The third heat exchange section (13) is arranged on a side of the first heat exchange section (11) away from the third heat exchange portion (122), and the third heat exchange section (13) is connected to one of the plurality of first heat exchange portions (111) that is closest to the second heat exchange portion (121) along the first direction.

22. The heat exchange element according to claim 21, characterized in that: The third heat exchange section (13) extends along the first direction in a direction away from the second heat exchange portion (121), and the first heat exchange portion (111) extends along the second direction, wherein the first direction and the second direction are arranged at an angle.

23. The heat exchange element according to claim 22, characterized in that: The third heat exchange section (13) extends along the first direction to a position close to one of the plurality of first heat exchange parts (111) that is farthest from the second heat exchange part (121).

24. The heat exchange element according to claim 21, characterized in that: The first heat exchange channel (10) further comprises: a fourth bending portion (14), the fourth bending portion (14) being arc-shaped and bent and connected between the third heat exchange section (13) and the first heat exchange portion (111).

25. The heat exchange element according to claim 20, characterized in that: The first heat exchange channel (10) further comprises: a first inlet and outlet section (15), one end of the first inlet and outlet section (15) being connected to the third heat exchange section (13) at an angle, and the other end of the first inlet and outlet section (15) forming a first inlet and outlet of the first heat exchange channel (10).

26. The heat exchange element according to claim 25, characterized in that: The first inlet and outlet section (15) extends along the second direction in a direction away from the first heat exchange section (11), and the third heat exchange section (13) is extended along the first direction.

27. The heat exchange element according to claim 26, characterized in that: The first heat exchange channel (10) further comprises: a fifth bending portion (16), the fifth bending portion (16) being arc-shaped and bent and connected between the third heat exchange section (13) and the first inlet and outlet section (15).

28. The heat exchange element according to claim 12, characterized in that: The first heat exchange channel (10) further comprises: a second inlet and outlet section (17), one end of the second inlet and outlet section (17) being connected to the fourth heat exchange portion (125) at an angle, and the other end of the second inlet and outlet section (17) forming a second inlet and outlet of the first heat exchange channel (10); and the second inlet and outlet section (17) extending along a second direction away from the first heat exchange section (11), and the fourth heat exchange portion (125) extending along the first direction.

29. The heat exchange element according to any one of claims 11 to 28, characterized in that: The first heat exchange section (11) is connected to the downstream of the second heat exchange section (12) along the direction of fluid flow; or, the heat exchange element is configured as follows: when heating the battery assembly (200) of the battery, the first heat exchange section (11) is connected to the downstream of the second heat exchange section (12) along the direction of fluid flow; when cooling the battery assembly (200) of the battery, the first heat exchange section (11) is connected to the upstream of the second heat exchange section (12) along the direction of fluid flow.

30. The heat exchange element according to any one of claims 11 to 28, characterized in that: The heat exchange element has one or more heat exchange channels. When the number of the heat exchange channels is multiple, the multiple heat exchange channels are arranged at intervals along a first direction, or arranged around each other, at least one of the heat exchange channels forms the first heat exchange channel (10), and the multiple heat exchange channels are arranged in parallel.

31. The heat exchange element according to claim 30, characterized in that: The plurality of heat exchange channels are arranged at intervals along a first direction, and the two heat exchange channels located at both ends of the first direction are both the first heat exchange channels (10); and the two first heat exchange channels (10) are arranged symmetrically about a center line of the heat exchange element along a second direction, wherein the second direction is arranged at an angle to the first direction.

32. The heat exchange element according to claim 30, characterized in that: The plurality of heat exchange channels are symmetrically arranged about a center line of the heat exchange element along the second direction.

33. The heat exchange element according to claim 30, characterized in that: The plurality of heat exchange channels also include: at least one second heat exchange channel (30), wherein the second heat exchange channel (30) is arranged between two of the first heat exchange channels (10), wherein the structure of any one of the second heat exchange channels (30) is the same as or different from the structure of the first heat exchange channel (10).

34. The heat exchange element according to claim 33, characterized in that: The second heat exchange channel (30) comprises a plurality of fourth heat exchange segments (31), and the plurality of fourth heat exchange segments (31) are connected in sequence, wherein the fourth heat exchange segments (31) extend along the second direction, and the plurality of fourth heat exchange segments (31) are arranged at intervals in the first direction.

35. The heat exchange element according to claim 30, characterized in that: The heat exchange component has a plurality of heat exchange channels, and the plurality of heat exchange channels include a first heat exchange channel (10) and at least one third heat exchange channel (40), the third heat exchange channel (40) is bent in the U-shaped area of ​​the first heat exchange channel (10), and the first heat exchange channel (10) and the third heat exchange channel (40) are bent in the same plane, and the bending structures of the first heat exchange channel (10) and the third heat exchange channel (40) are the same or different.

36. The heat exchange element according to claim 35, characterized in that: The third heat exchange channel (40) comprises a U-shaped region having the same structure as the first heat exchange channel (10), and at least a portion of the first heat exchange section (11) of the first heat exchange channel (10) is arranged in the U-shaped region of the third heat exchange channel (40).

37. The heat exchange element according to claim 35, characterized in that: The U-shaped region of the first heat exchange channel (10) is located at the outermost circumference of the heat exchange element.

38. The heat exchange element according to claim 30, characterized in that: The heat exchange element includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along the first direction, and the inner side of each heat exchange tube defines a heat exchange channel.

39. The heat exchange element according to claim 38, characterized in that: The heat exchange tube is formed by bending a single tube. Optionally, the heat exchange tube is bent in an arc shape at a bending position.

40. The heat exchange element according to claim 39, characterized in that: The heat exchange tube is bent in an arc at a bending position, and the ratio of the bending radius of the heat exchange tube on the center line along the length direction to the width of the heat exchange tube is greater than or equal to 0.6; optionally, the ratio of the bending radius of the heat exchange tube to the width of the heat exchange tube is greater than or equal to 0.8; optionally, the wall thickness of the heat exchange tube at the bending position is greater than or equal to 0.2 mm.

41. The heat exchange element according to claim 39, characterized in that: At the bending position of the heat exchange tube, the bending thinning rate of the wall thickness of the heat exchange tube is less than or equal to 50%; optionally, the bending thinning rate of the heat exchange tube is less than or equal to 30%.

42. The heat exchange element according to claim 38, characterized in that: The wall thickness of the heat exchange tube is 0.2mm-3mm; optionally, the wall thickness of the heat exchange tube is 0.5mm-1.2mm.

43. The heat exchange element according to claim 30, characterized in that: The heat exchange element comprises a heat exchange plate, and the heat exchange channel is formed on the heat exchange plate by stamping.

44. The heat exchange element according to claim 30, characterized in that: The width of the heat exchange channel is 3mm-200mm; optionally, the width of the heat exchange channel is 5mm-80mm; further optionally, the height of the heat exchange channel in the third direction is 1mm-20mm; further optionally, the height of the heat exchange channel in the third direction is 4mm-6mm.

45. The heat exchange element according to claim 30, characterized in that: The number of the heat exchange channels is 2 to 4.

46. ​​The heat exchange element according to claim 30, characterized in that: The heat exchange element further comprises a current collector (20), wherein the current collector (20) comprises: A pipe body (21); A plurality of first flow channel interfaces (22), the plurality of first flow channel interfaces (22) corresponding one-to-one to and connected with the plurality of first inlets and outlets of the heat exchange flow channels; a plurality of second flow channel interfaces (23), the plurality of second flow channel interfaces (23) corresponding one-to-one to and connected with the second inlets and outlets of the plurality of heat exchange flow channels, and at least two of the second flow channel interfaces (23) are respectively located on both sides of the plurality of first flow channel interfaces (22) along the extension direction of the tube body (21); A partition structure (24), wherein the partition structure (24) is arranged inside the tube body (21), and the partition structure (24) separates the first flow channel interface (22) and the second flow channel interface (23) inside the tube body (21), and the plurality of second flow channel interfaces (23) are connected inside the tube body (21).

47. The heat exchange element according to claim 46, characterized in that: The pipe body (21) is divided into a first space (211) and a second space (212) which are independent of each other by the partition structure (24); the first space (211) is connected to the first flow channel interface (22); the second space (212) is connected to the second flow channel interface (23); along the extension direction of the pipe body (21), the second space (212) comprises a first section, a second section and a third section which are connected in sequence; the first section and the third section are respectively located on two sides of the first space (211); and the second section is arranged side by side with the first space (211).

48. The heat exchange element according to claim 47, characterized in that: The partition structure (24) includes a first partition plate (241) and a second partition plate (242), wherein the first partition plate (241) is used to separate the second section and the first space (211), and the second partition plate (242) includes at least two and respectively located at both ends of the first partition plate (241) along the extension direction of the tube body (21), and the second partition plate (242) is used to separate the first section and the first space (211), and the third section and the first space (211).

49. The heat exchange element according to claim 30, characterized in that: Also includes: a first pipe portion, wherein an inlet end of the first pipe portion is formed as a first inlet and outlet of the heat exchange flow channel; a second pipe portion, wherein an outlet end of the second pipe portion is formed as a second inlet and outlet of the heat exchange flow channel; The mounting member (19) is configured to be sealed and connected to a battery box (300); a through hole is formed on the mounting member (19) and communicates with spaces on both sides of the mounting member (19); the first tube portion and / or the second tube portion passes through the through hole and is sealed and connected to the through hole.

50. The heat exchange element according to claim 49, characterized in that: The mounting member (19) has a cavity with an opening on one side, and the mounting member (19) includes a mounting plate arranged opposite to the opening of the cavity, and the through hole passes through the mounting plate. The mounting member (19) is suitable for being arranged between the box body (401) and the bottom guard plate (302) of the box body (300), and the outer peripheral surface of the mounting member (19) is suitable for being sealed and connected with the box body (401) and the bottom guard plate (302).

51. A battery, characterized in that: include: The heat exchange element according to any one of claims 1 to 50; A battery assembly (200), the battery assembly (200) comprising a battery unit (201), the battery unit (201) comprising a plurality of battery cells (2011) sequentially stacked along a third direction; The heat exchange component is arranged on one side of the battery assembly (200) in a fourth direction and performs heat exchange with the battery assembly (200), wherein the third direction and the fourth direction are arranged at an angle, The battery assembly (200) comprises a plurality of battery cells (2011) at the outermost periphery thereof, forming a peripheral battery cell. The second heat exchange section (12) comprises a first flow channel portion and a second flow channel portion connected to each other. At least one of the first flow channel portion and the second flow channel portion is in contact with the peripheral battery cell.

52. The battery according to claim 51, characterized in that The battery assembly (200) comprises one battery unit (201), and all battery cells (2011) of the battery unit (201) together form the peripheral battery cells; or, the battery assembly (200) comprises a plurality of battery units (201), and the plurality of battery units (201) are arranged in sequence along a fifth direction, and a plurality of battery cells (2011) located at the outermost periphery of the battery assembly (200) together form the peripheral battery cells, and the third direction, the fourth direction and the fifth direction are arranged at angles to each other.

53. The battery according to claim 52, characterized in that The peripheral battery cell group comprises a first group of battery cells (202), a second group of battery cells (203) and a third group of battery cells (204) arranged adjacent to each other, the first group of battery cells (202) comprising a plurality of battery cells (2011) arranged in a stacked manner along the third direction, the second group of battery cells (203) comprising a plurality of battery cells (2011) arranged in a stacked manner along the fifth direction, and the third group of battery cells (204) comprising a plurality of battery cells (2011) arranged in a stacked manner along the fifth direction; The second heat exchange section (12) comprises a second heat exchange portion (121), a third heat exchange portion (122) and a fourth heat exchange portion (125) which are connected; The second heat exchange portion (121) extends and fits the first group of battery cells (202) to enable heat exchange, and / or the third heat exchange portion (122) extends and fits the second group of battery cells (203) to enable heat exchange, and / or the fourth heat exchange portion (125) extends and fits the third group of battery cells (204) to enable heat exchange.

54. The battery according to claim 53, characterized in that The peripheral battery cells also include a fourth group of battery cells (205), wherein the plurality of battery cells (2011) included in the fourth group of battery cells (205) are arranged along the third direction, and the second heat exchange section (12) also includes a fifth heat exchange portion (127), wherein the fifth heat exchange portion (127) closes at least a portion of an opening of a U-shaped region formed by the second heat exchange portion (121), the third heat exchange portion (122) and the fourth heat exchange portion (125), and the fifth heat exchange portion (127) extends and fits the fourth group of battery cells (205) to enable heat exchange.

55. The battery according to claim 53, characterized in that The second heat exchange portion (121) extends along a second direction, and the second direction is the same direction as the third direction; the third heat exchange portion (122) and the fourth heat exchange portion (125) extend along a first direction, and the first direction is the same direction as the fifth direction; and / or the first heat exchange portion (111) extends along the first direction, and the first direction is the same direction as the fifth direction.

56. The battery according to claim 55, characterized in that The battery assembly (200) comprises a plurality of battery cells (201) arranged in sequence along a fifth direction, at least one of the battery cells (201) located at both ends in the fifth direction is the first group of battery cells (202), The second heat exchange portion (121) and at least one first heat exchange portion (111) of the first heat exchange section (11) are jointly attached to the first group of battery cells (202) to enable heat exchange.

57. The battery according to claim 56, characterized in that The first heat exchange parts (111) are multiple in number and are bent and connected in sequence in the first direction; The second heat exchange part (121) and the first heat exchange part (111) which is farthest from the second heat exchange part (121) along a line connected in sequence perform heat exchange with the first group of battery cells (202).

58. The battery according to claim 53, characterized in that The second heat exchange section (12) comprises a second heat exchange portion (121), a third heat exchange portion (122) and a fourth heat exchange portion (125) which are connected to each other; a first end of the third heat exchange portion (122) is connected to the second heat exchange portion (121) at an angle, and a second end of the third heat exchange portion (122) is connected to the first heat exchange section (11) at an angle. The second heat exchange portion (121) extends and fits the first group of battery cells (202) to enable heat exchange, the third heat exchange portion (122) extends and fits the second group of battery cells (203) to enable heat exchange, and the fourth heat exchange portion (125) extends and fits the third group of battery cells (204) to enable heat exchange; or The second heat exchange portion (121) is attached to the second group of battery cells (203) to enable heat exchange, and the third heat exchange portion (122) is attached to the first group of battery cells (202) to enable heat exchange.

59. The battery according to claim 53, characterized in that The first heat exchange channel (10) further comprises: a third heat exchange section (13), the third heat exchange section (13) being connected to an end of the first heat exchange section (11) away from the second heat exchange section (12), and being connected to the first heat exchange section (11) at an angle; The battery assembly (200) further comprises a fifth group of battery cells (206), wherein the fifth group of battery cells (206) comprises a plurality of battery cells (2011) arranged in a stacked manner along a fifth direction, and the fifth group of battery cells (206) is arranged adjacent to the third group of battery cells (204). Wherein, the third heat exchange section (13) and the fourth heat exchange part (125) are both attached to the third group of battery cells (204) to enable heat exchange; or, the third heat exchange section (13) is attached to the fifth group of battery cells (206) to enable heat exchange, and the fourth heat exchange part (125) is attached to the third group of battery cells (204) to enable heat exchange; or, the third heat exchange section (13) is attached to the third group of battery cells (204) to enable heat exchange, and the fourth heat exchange part (125) is arranged on the outside of the battery assembly (200) in the third direction.

60. The battery according to claim 55, characterized in that The first heat exchange portion (111) of the first heat exchange section (11) and the second heat exchange portion (121) of the second heat exchange section (12) both extend along a second direction and are arranged at intervals in the first direction, One of the battery units (201) is bonded to one of the second heat exchange parts (121) and at least one of the first heat exchange parts (111) to enable heat exchange; or one of the battery units (201) is bonded to at least two of the first heat exchange parts (111) to enable heat exchange.

61. The battery according to claim 60, characterized in that The total number of the first heat exchange parts (111) and the second heat exchange parts (121) of the first heat exchange channel (10) is greater than or equal to 4.

62. The battery according to claim 60, characterized in that The number of the first heat exchange channels (10) is two, and each of the first heat exchange channels (10) comprises: three first heat exchange parts (111), one second heat exchange part (121), one third heat exchange part (122), one fourth heat exchange part (125) and one third heat exchange section (13), The number of the battery units (201) is four, the battery unit (201) at the end portion in the fifth direction is attached to a first heat exchange portion (111) and a second heat exchange portion (121) to enable heat exchange, and any other battery unit (201) is attached to two first heat exchange portions (111) to enable exchange, The third heat exchange part (122) is connected to the second heat exchange part (121) and the first heat exchange part (111) which is farthest from the second heat exchange part (121), and is fitted with the second group of battery cells (203) to enable heat exchange. The third heat exchange section (13) is connected to the first heat exchange part (111) which is closest to the second heat exchange part (121). The third heat exchange section (13) and / or the fourth heat exchange part (125) are fitted with the third group of battery cells (204) to enable heat exchange.

63. The battery according to claim 60, characterized in that The number of the first heat exchange channels (10) is two, and each of the first heat exchange channels (10) comprises: five first heat exchange parts (111), one second heat exchange part (121), one third heat exchange part (122), one fourth heat exchange part (125) and one third heat exchange section (13), The number of the battery cells (201) is six, the battery cells (201) at the end portion in the fifth direction are attached to a first heat exchange portion (111) and a second heat exchange portion (121) to enable heat exchange, and any other battery cells (201) are attached to two of the first heat exchange portions (111) to enable heat exchange, The third heat exchange part (122) is connected to the second heat exchange part (121) and the first heat exchange part (111) which is farthest from the second heat exchange part (121), and is fitted with the second group of battery cells (203) to enable heat exchange. The third heat exchange section (13) is connected to the first heat exchange part (111) which is closest to the second heat exchange part (121). The third heat exchange section (13) and / or the fourth heat exchange part (125) are fitted with the third group of battery cells (204) to enable heat exchange.

64. The battery according to claim 60, characterized in that The number of the first heat exchange channels (10) is two, and each of the first heat exchange channels (10) comprises: five first heat exchange parts (111), one second heat exchange part (121), one third heat exchange part (122), one fourth heat exchange part (125) and one third heat exchange section (13), The number of the battery cells (201) is four, the battery cell (201) at the end portion in the fifth direction is attached to two first heat exchange portions (111) and one second heat exchange portion (121) to enable heat exchange, and any other battery cell (201) is attached to three first heat exchange portions (111) to enable heat exchange, The third heat exchange part (122) is connected to the second heat exchange part (121) and the first heat exchange part (111) which is farthest from the second heat exchange part (121), and is fitted with the second group of battery cells (203) to enable heat exchange. The third heat exchange section (13) is connected to the first heat exchange part (111) which is closest to the second heat exchange part (121). The third heat exchange section (13) and / or the fourth heat exchange part (125) are fitted with the third group of battery cells (204) to enable heat exchange.

65. The battery according to claim 51, characterized in that The battery comprises a box body (300) and a battery assembly (200), wherein the box body (300) comprises a box body (401), wherein the box body (401) is an integral stamped part and comprises a bottom wall and a surrounding wall, wherein the battery assembly (200) is arranged in the box body (401), wherein the battery assembly (200) comprises a battery cell (201), and wherein the battery cell (201) comprises a plurality of battery cells (2011) sequentially stacked along a third direction.

66. The battery according to claim 65, characterized in that The thermal management system of the battery comprises a temperature regulating component (500), wherein the temperature regulating component (500) comprises at least one of a first temperature regulating component (501) and a second temperature regulating component (502), The first temperature regulating component (501) is arranged outside the box body (401) and is in contact with the outer wall of the box body (401); The second temperature regulating component (502) is disposed in the box body (300) and is located between the peripheral wall of the battery cell (2011) and the box body (300); At least one of the first temperature regulating element (501) and the second temperature regulating element (502) forms the heat exchange element.

67. The battery according to claim 66, characterized in that The thermal management system of the battery further comprises a third temperature regulating component (503), wherein the third temperature regulating component (503) is arranged in the box body (401) and between two adjacent battery cells (2011), and the structure of the third temperature regulating component (503) is the same as or different from the structure of the heat exchange component.

68. The battery according to claim 65, characterized in that The box body (300) further comprises a bottom guard plate (302), wherein the bottom guard plate (302) is arranged on the lower side of the box body (401), and the heat exchange element is arranged between the box body (401) and the bottom guard plate (302); The battery further comprises a foamed part (400), at least a portion of which fills a gap formed by the bending of the heat exchange tube of the heat exchange part.

69. The battery according to claim 68, characterized in that The foaming member (400) comprises a main body (401) and a plurality of convex ribs (402), wherein the plurality of convex ribs (402) are formed on a side surface of the main body (401) in a thickness direction, and the plurality of convex ribs (402) cooperate with the main body (401) to define a receiving groove, wherein the heat exchange tube is arranged in the receiving groove, and the thickness of the heat exchange tube is greater than the depth of the receiving groove.

70. An electrical device, characterized in that: Comprising a battery according to any one of claims 51-69.

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