Heat exchange member, battery and electrical device

Abstract

A heat exchange member (100), a battery (1000) and an electrical device. The heat exchange member (100) comprises a first heat exchange flow channel (10), the first heat exchange flow channel (10) comprising a first heat exchange section (11) and a second heat exchange section (12), wherein 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) and is connected to the second heat exchange section (12) by bending.

Description

Heat exchangers, batteries and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202410171636.6 and application date of February 6, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] 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

[0004] To ensure proper battery operation and longevity, existing batteries are typically equipped with heat exchangers. These heat exchangers exchange heat with the battery cells to regulate the temperature of each cell, thereby ensuring battery life. However, due to the large number of cells in a battery pack, the temperature uniformity of each cell under the heat exchange effect of the heat exchanger needs to be further improved.

[0005] Application Contents

[0006] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a heat exchange component, a battery and an electrical device incorporating the heat exchange component. The heat exchange component can compensate for the internal and external temperature difference caused by heat exchange between the surrounding battery cells and the environment, making the heat exchange effect between the battery cells outside the battery assembly and the battery cells inside the battery assembly more consistent, thereby improving the temperature uniformity of the battery and extending the battery life.

[0007] In the first aspect, an embodiment of the present application provides a heat exchange element, which is used for a battery. The heat exchange element includes a first heat exchange channel, and the first heat exchange channel includes a first heat exchange section and a second heat exchange section; the second heat exchange section is bent to form a U-shaped area, and the first heat exchange section is bent and arranged in the U-shaped area, and is bent and connected to the second heat exchange section.

[0008] In the above embodiment, since the battery cells arranged on the periphery of the battery are closer to the side wall of the box body than the internal battery cells, the battery cells on the periphery of the battery can dissipate heat more easily through the side wall or end plate and other structures of the battery, and are less affected by the heat dissipation of the adjacent battery cells, while the battery cells located inside have difficulty in dissipating heat and are more affected by the heat dissipation of the 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 operated, which makes the battery less stable during operation and the battery performance Attenuation is prone to occur; in view of this, the present application bends the second heat exchange section to form a U-shaped area, and the first heat exchange section is bent and arranged in the U-shaped area. When the heat exchange component of this embodiment is used to exchange heat with the battery assembly, the U-shaped area formed by the outer second heat exchange section can be opposite to the outer battery cells of the battery, and the first heat exchange section in the U-shaped area can be opposite to the internal battery cells, so that the heat exchange component can make up 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 battery life to a certain extent.

[0009] According to an example of the present application, the second heat exchange section is located at the outermost side of the first heat exchange channel in the circumferential direction.

[0010] 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 increasing the service life of the battery assembly to a certain extent.

[0011] According to an example of the present application, the first heat exchange section and the second heat exchange section are bent in the same plane.

[0012] In the above 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. As a result, 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.

[0013] According to an example of the present application, 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.

[0014] In the above embodiment, on the one hand, by setting up multiple 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 multiple 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.

[0015] According to an example of the present application, a plurality of first heat exchange parts are arranged at intervals along the first direction, each first heat exchange part extends straightly along the second direction, and the first direction and the second direction are arranged at an angle.

[0016] In the above 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 pipe 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 facilitate ensuring the volume energy density of the battery.

[0017] According to an example of the present application, the first heat exchange section further includes: a first bending portion, the first bending portion is arc-shaped, and is bent and connected between two adjacent first heat exchange portions.

[0018] In the above embodiment, by setting the first bend portion, the fluid flow direction inside the first heat exchange section can be changed, a smooth transition between the two first heat exchange sections can be achieved, and the circuitous extension of the first heat exchange channel can be achieved. 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 bend 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.

[0019] According to an example of the present application, 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 communicated with 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.

[0020] In the above 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 and 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, it can also simplify the structure of the first heat exchange channel and facilitate the processing and production of the heat exchange components.

[0021] According to an example of the present application, 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, 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,

[0022] 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 the 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.

[0023] In the above embodiment, by setting a plurality of first heat exchange parts to bend and connect 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 between the second heat exchange part, the third heat exchange part, the fourth heat exchange part and the first heat exchange part is defined, and the layout of the first heat exchange flow channel is further defined, simplifying the structure of the first heat exchange flow channel and facilitating processing and manufacturing. 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.

[0024] According to an example of the present application, the third heat exchange part and the fourth heat exchange part are extended along the first direction, and the first heat exchange part and the second heat exchange part are both extended along the second direction; or, the first heat exchange part, the third heat exchange part and the fourth heat exchange part are all extended along the second direction, and the second heat exchange part is extended along the first direction.

[0025] In the above embodiment, by arranging the third heat exchange part and the fourth heat exchange part to extend along the first direction, and the first heat exchange part and the second heat exchange part to extend along the second 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.

[0026] 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.

[0027] According to an example of the present application, 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, 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.

[0028] 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 dimensions 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 both 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 can be facilitated 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.

[0029] In the above embodiment, by setting the length of the third heat exchange part to be greater than the length of the first heat exchange part in the second direction, the first heat exchange section can be covered in the U-shaped area of ​​the second heat exchange section, increasing the length of the third heat exchange part, increasing the heat exchange area of ​​the third heat exchange part, and enabling the second heat exchange section to 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.

[0030] According to an example of the present application, 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.

[0031] In the above embodiment, by setting the fourth heat exchange part to extend along the first direction and extend to a position close to the 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.

[0032] According to an example of the present application, the second heat exchange section also includes: a second bend portion and a third bend portion, the second bend portion and the third bend portion are both arc-shaped, and the second bend portion is connected between the first end of the third heat exchange portion and the second heat exchange portion, and the third bend portion is connected between the second end of the third heat exchange portion and the first heat exchange portion.

[0033] In the above-described embodiment, by providing the second and third bends, the direction of fluid flow in the first heat exchange channel can be changed, achieving a smooth transition between the third heat exchange section and the second heat exchange section, and achieving a smooth transition between the third heat exchange section and the first heat exchange section. As a result, the second and third bends can reduce the flow resistance of the fluid flow in the second heat exchange section, reduce pressure drop, increase the flow rate of the heat exchange fluid, and further increase the heat exchange efficiency of the first heat exchange channel. Furthermore, by providing the second and third bends, a circuitous arrangement of the first heat exchange channel can be achieved. This can increase the heat exchange area of ​​the first heat exchange channel and make the structure more compact, which is more conducive to the miniaturization of the battery design and ensures the volumetric energy density of the battery.

[0034] According to an example of the present application, the second heat exchange section also includes: a fifth heat exchange part, 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 part, the third heat exchange part and the fourth heat exchange part.

[0035] In the above embodiment, by providing the fifth heat exchange portion, 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 a 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.

[0036] According to an example of the present application, the fifth heat exchange part is arranged opposite to the second heat exchange part, the fifth heat exchange part is connected between the second end of the third heat exchange part and the first heat exchange section, and is connected to the third heat exchange part at an angle, and is connected to the first heat exchange section at an angle; or, one end of the fifth heat exchange part is connected to an end of the fourth heat exchange part away from the second heat exchange part, and the fifth heat exchange part is connected to the fourth heat exchange part at an angle.

[0037] 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.

[0038] According to an example of the present application, 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.

[0039] In the above 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.

[0040] According to an example of the present application, 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.

[0041] 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.

[0042] According to an example of the present application, the third heat exchange section extends along a first direction away from the second heat exchange portion, and the first heat exchange portion extends along a second direction, wherein the first direction and the second direction are arranged at an angle.

[0043] In the above embodiment, by setting the third heat exchange section to extend along the first direction away from the second heat exchange part, the heat exchange area of ​​the first heat exchange channel can be increased, and the heat exchange effect of the first heat exchange channel on the battery cell can be improved; 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.

[0044] According to an example of the present application, 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.

[0045] 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.

[0046] According to an example of the present application, 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.

[0047] In the above-described embodiment, the provision of the fourth bend changes the flow direction of the fluid between the third heat exchange section and the first heat exchange section. Furthermore, the curved fourth bend reduces fluid flow resistance, reduces pressure drop, increases fluid flow rate, and further enhances the heat exchange efficiency of the first heat exchange channel. Furthermore, the provision of the fourth bend allows for a circuitous arrangement of the first heat exchange channel, thereby increasing the heat exchange area of ​​the first heat exchange channel and making the structure more compact, further facilitating a miniaturized battery design and improving the battery's volumetric energy density.

[0048] According to an example of the present application, the first heat exchange channel also 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 the first inlet and outlet of the first heat exchange channel.

[0049] In the above embodiment, by setting the first inlet and outlet 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 quickly enter or discharge, thereby improving the heat exchange rate.

[0050] According to an example of the present application, 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.

[0051] In the above 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 made more reasonable and convenient for connection with external pipelines; at the same time, the first inlet and outlet can be made away from the battery assembly, which is beneficial to reduce the occurrence of damage to the battery assembly due to water leakage from the first inlet and outlet.

[0052] According to an example of the present application, 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.

[0053] In the above 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 shape of the 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.

[0054] According to an example of the present application, the first heat exchange channel also includes: a second inlet and outlet section, one end of the second inlet and outlet section is connected to the fourth heat exchange part at an angle, and the other end of the second inlet and outlet section forms a second inlet and outlet of the first heat exchange channel; and the second inlet and outlet 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.

[0055] In the above embodiment, by setting up a second inlet and outlet section, it is 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 quickly enter or discharge, thereby improving the heat exchange rate.

[0056] According to an example of the present application, 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.

[0057] In the above-described embodiment, by connecting the first heat exchange section downstream of the second heat exchange section along the fluid flow direction, the first heat exchange channel can preferentially exchange heat along the outer circumference of the battery, thereby improving the temperature difference between the battery and different environments, thereby increasing the battery life to a certain extent. By configuring the heat exchange element so that when heating the battery pack, the first heat exchange section is connected downstream of the second heat exchange section along the fluid flow direction; when cooling the battery pack, the first heat exchange section is connected upstream of the second heat exchange section along the fluid flow direction, the heat exchange effect on the battery can be further improved, thereby improving the temperature uniformity of the battery pack.

[0058] According to an example of the present application, 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.

[0059] In the above-mentioned embodiment, by providing a heat exchange element 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, enabling it to meet different battery requirements, thereby improving the market competitiveness of the battery; 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 and improving the heat exchange efficiency. According to an example of the present application, the 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; 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.

[0060] In the above embodiment, by setting up two symmetrically arranged first heat exchange channels, liquid can be fed into both sides at the same time, the liquid inlet flow rate is increased, the length of a single heat exchange channel is shortened, and the pressure drop in a single heat exchange channel is reduced, thereby improving the heat exchange efficiency.

[0061] According to an example of the present application, the plurality of heat exchange channels are symmetrically arranged about a center line of the heat exchange element along the second direction.

[0062] In the above 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.

[0063] According to an example of the present application, the multiple heat exchange channels also 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 the structure of the first heat exchange channel.

[0064] In the above embodiment, by providing at least one second heat exchange channel, the diversity of the heat exchange channel arrangement 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.

[0065] According to an example of the present application, the second heat exchange channel includes multiple fourth heat exchange segments, which are connected in sequence, wherein the fourth heat exchange segments extend along the second direction, and the multiple fourth heat exchange segments are arranged at intervals in the first direction.

[0066] 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.

[0067] According to an example of the present application, 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. The bending structures of the first heat exchange channel and the third heat exchange channel are the same or different.

[0068] In the above embodiment, by setting up multiple 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.

[0069] According to an example of the present application, the third heat exchange channel includes a U-shaped region with the same structure as the first heat exchange channel, and at least part of the first heat exchange section of the first heat exchange channel is arranged in the U-shaped region of the third heat exchange channel.

[0070] In the above 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 part 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 part 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, further increasing the heat exchange effect of the heat exchange component and improving the temperature uniformity of the battery.

[0071] According to an example of the present application, the U-shaped region of the first heat exchange channel is located at the outermost circumference of the heat exchange element.

[0072] In the above embodiment, by setting the U-shaped area of ​​the second heat exchange section of the first heat exchange channel at the outermost circumference of the heat exchange component, 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.

[0073] According to an example of the present application, 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.

[0074] In the above-described embodiment, by configuring 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 it can also reduce the fluid pressure drop within a single heat exchange tube, thereby improving heat exchange efficiency. Furthermore, compared to a plate-like structure, a tubular structure is simpler, less expensive, and easier to manufacture.

[0075] According to an example of the present application, 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.

[0076] In the above-described embodiment, by bending the heat exchange tube from a single tube, the number of weld points of the heat exchange component can be reduced, thereby reducing the risk of leakage in the heat exchange component and improving the reliability of the heat exchange component. At the same time, the operation process of bending the single tube is simpler than the production process of a plate-like structure, and less material is used, which can significantly reduce the cost of the heat exchange component. By bending the heat exchange tube 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 exchange component.

[0077] According to an example of the present application, 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.

[0078] In the above embodiment, by setting the ratio of the bending radius r of the heat exchange tube along the centerline of 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 break when bent and stretched, thereby reducing the probability of damage to the heat exchange tube during 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. 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 during 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. 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, and thus improving the reliability of the heat exchange tube.

[0079] According to an example 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%; optionally, the bending thinning rate of the heat exchange tube is less than or equal to 30%.

[0080] In the above-described embodiment, by setting the bend reduction rate of the heat exchange tube wall thickness to be less than or equal to 50%, the wall thickness loss of the heat exchange tube can be kept within a preset range, thereby preventing the wall thickness of the heat exchange tube from being too thin at the bend. This helps to ensure the strength of the heat exchange tube at the bend, effectively reducing the risk of leakage at the bend, and thus improving the reliability of the heat exchange tube. By setting the bend reduction 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, further improving the strength of the heat exchange tube at the bend.

[0081] According to an example of the present application, 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.

[0082] In the above embodiment, the wall thickness of the heat exchange tube is set to 0.2mm-3mm. This ensures that the heat exchange tube has an appropriate thickness, preventing the wall thickness from being too thin, thereby ensuring the heat exchange tube's strength and effectively reducing the risk of damage. The wall thickness of the heat exchange tube is also prevented from being too thick, which helps reduce the overall weight of the heat exchange tube, thereby reducing the overall weight of the battery and achieving a lightweight battery. Setting the wall thickness of the heat exchange tube to 0.5mm-1.2mm ensures the strength of the heat exchange tube while reducing the overall weight of the heat exchange tube and achieving a lightweight battery.

[0083] According to an example of the present application, the heat exchange component includes a heat exchange plate, and the heat exchange channel is formed on the heat exchange plate by stamping.

[0084] 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, which can ensure the heat exchange efficiency.

[0085] According to an example of the present application, 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.

[0086] In the above 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 component; the width of the heat exchange channel can also be made not too small, so that the number of first heat exchange sections arranged can be reduced, thereby reducing the overall cost of the heat exchange component. 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 component. At the same time, the number of first heat exchange sections arranged can be reduced, thereby reducing the overall cost of the heat exchange component. By setting the height of the heat exchange channel in the third direction to 1mm-20mm, the height of the heat exchange component can be made not too small, thereby ensuring the flow rate of the heat exchange fluid in the heat exchange component and thus ensuring the heat exchange effect of the heat exchange component; at the same time, the height of the heat exchange component can be made not too large, which is beneficial to reducing the space occupied by the heat exchange component and realizing miniaturization of the battery. By setting the height of the heat exchange channel in the third direction to 4mm-6mm, 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 achieving miniaturization of the battery.

[0087] According to an example of the present application, the number of heat exchange channels is 2 to 4.

[0088] 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.

[0089] According to an example of the present application, the heat exchanger also includes a fluid 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.

[0090] In the above 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 multiple, 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.

[0091] According to an example of the present application, 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.

[0092] In the above 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 inflow and outflow 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, which can reduce the size of the tube body and thus reduce the space occupied by the collecting pipe.

[0093] According to an example of the present application, 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, as well as, the third section and the first space.

[0094] 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.

[0095] According to an example of the present application, the heat exchange component also includes: a first tube portion, the inlet end of the first tube portion is formed as a first inlet and outlet of the heat exchange channel; a second tube portion, the 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.

[0096] In the above embodiment, by providing mounting parts, it is no longer necessary to separately seal the first tube portion and the second tube portion with the box body when assembling the battery. This can reduce the labor and materials required for battery assembly, thereby increasing the battery production rate and reducing the labor cost of battery production.

[0097] According to an example of the present application, 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.

[0098] In the above 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 set 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 member and multiple battery cells, thereby, when the heat exchange member is damaged, it will not affect multiple battery cells, thereby reducing the cost of battery maintenance.

[0099] In a second aspect, an embodiment of the present application provides a battery comprising the heat exchange element according to the first aspect of the present application.

[0100] In the above embodiment, by setting the heat exchange element of the first aspect, the second heat exchange section of the heat exchange element is bent to form a U-shaped area, and the first heat exchange section is bent and set in the U-shaped area. When the heat exchange element is used to exchange heat with the battery assembly, the U-shaped area formed by the outer second heat exchange section can be opposite to the outer battery cells of the battery, and the first heat exchange section in the U-shaped area can be opposite to the internal battery cells, so that the heat exchange element can make up 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.

[0101] According to an example of the present application, 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 exchanger 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.

[0102] 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 kept within the safe operating temperature, thereby improving the reliability and service life of the battery assembly.

[0103] According to an example of the present application, a plurality of battery cells located at the outermost periphery of the battery assembly constitute peripheral battery cells, and at least a portion of the second heat exchange section is in contact with the peripheral battery cells.

[0104] In the above embodiment, by arranging at least a portion of the second heat exchange section to be in contact with 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.

[0105] According to an example of the present application, a 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.

[0106] In the above embodiment, when the battery assembly is arranged to include one 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 restricting 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 arranging multiple battery cells located at the outermost periphery of the battery assembly to form a peripheral battery cell together, the heat exchange position of the second heat exchange section can be limited, thereby facilitating the layout of the heat exchange channel.

[0107] According to an example of the present application, 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 that are connected; 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.

[0108] In the above 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, the peripheral battery cell group is arranged at the outermost periphery of the battery assembly, closest to the battery case, has more heat exchange with the environment, and has a lower temperature than the battery cells in other positions. Then, by setting at least one of the second heat exchange part, the third heat exchange part and the fourth heat exchange part to be in 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.

[0109] According to an example of the present application, the peripheral battery cells also include a fourth group of battery cells, and the multiple 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 part, and the fifth heat exchange part closes at least part of the opening of the U-shaped area formed by the second heat exchange part, the third heat exchange part and the fourth heat exchange part. The fifth heat exchange part extends and fits the fourth group of battery cells to enable heat exchange.

[0110] In the above embodiment, a fifth heat exchange portion 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.

[0111] According to an example of the present application, the second heat exchange portion extends along the second direction, the second direction and the third direction are the same direction, the third heat exchange portion and the fourth heat exchange portion extend along the first direction, the first direction and the fifth direction are the same direction; and / or, the first heat exchange portion extends along the first direction, the first direction and the fifth direction are the same direction.

[0112] In the above 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. As a result, the layout of the first heat exchange channel can better meet the heat exchange requirements of the battery assembly and improve the heat exchange efficiency.

[0113] In the above 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.

[0114] According to an example of the present application, 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, 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.

[0115] In the above 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.

[0116] According to an example of the present application, 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.

[0117] In the above embodiment, a second heat exchange part is provided and the first heat exchange part that is farthest away from the second heat exchange part along the connecting line connected in sequence exchanges heat with the first group of battery cells, so that the second heat exchange part and the adjacent first heat exchange part exchange heat with the first group of battery cells, and then the second heat exchange part exchanges heat with the 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 roughly 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 thereby improving the temperature uniformity of the first group of battery cells.

[0118] According to an example of the present application, 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.

[0119] In the above-described embodiment, by providing a second heat exchange portion extending and affixing to the first group of battery cells to enable heat exchange, a third heat exchange portion extending and affixing to the second group of battery cells to enable heat exchange, and a fourth heat exchange portion extending and affixing to the third group of battery cells to enable heat exchange, the second heat exchange section can exchange heat with the periphery of the battery assembly, thereby balancing the temperature difference caused by heat dissipation in the battery assembly. By providing a second heat exchange portion affixing to the second group of battery cells to enable heat exchange, and a third heat exchange portion affixing to the first group of battery cells to enable heat exchange, the heat exchange flow path of the heat exchange element can be designed according to the arrangement of multiple battery cells, thereby improving the applicability of the heat exchange element, enabling it to meet the cooling requirements of different batteries, and increasing the heat exchange efficiency and temperature equalization effect of the batteries.

[0120] According to an example of the present application, 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 stacked along the fifth direction, and the fifth group of battery cells is 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.

[0121] In the above 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 production difficulty of the heat exchange component can be reduced.

[0122] According to an example of the present application, the first heat exchange part of the first heat exchange section and the second heat exchange part 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 part and at least one first heat exchange part to enable heat exchange; or, a battery unit is fitted with at least two first heat exchange parts to enable heat exchange.

[0123] In the above embodiment, a battery cell is arranged to be bonded to a second heat exchange portion and at least one first heat exchange portion so as to enable heat exchange; or a battery cell is bonded to at least two first heat exchange portions so as to enable heat exchange, so that a battery cell can exchange heat with at least two heat exchange portions, thereby increasing the heat exchange area and thereby increasing the heat exchange effect.

[0124] According to an example of the present application, 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.

[0125] 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.

[0126] According to an example of the present application, 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 segment. The number of battery cells is four, and 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 is connected to 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 segment is connected to the first heat exchange part closest to the second heat exchange part, and the third heat exchange segment and / or the fourth heat exchange part are fitted with the third group of battery cells to enable heat exchange.

[0127] 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 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.

[0128] According to an example of the present application, 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 segment. The number of battery cells is six, and 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 is connected to 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 segment is connected to the first heat exchange part closest to the second heat exchange part, and the third heat exchange segment and / or the fourth heat exchange part are fitted with the third group of battery cells to enable heat exchange.

[0129] In the above embodiment, by setting six battery cells to match two first heat exchange channels, and each first heat exchange channel includes five first heat exchange parts and one second heat exchange part, it can be ensured that each battery cell can exchange heat with the two heat exchange parts, thereby ensuring the temperature uniformity of each battery cell.

[0130] According to an example of the present application, 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 segment. 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 is connected to 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 segment is connected to the first heat exchange part closest to the second heat exchange part, and the third heat exchange segment and / or the fourth heat exchange part are fitted with the third group of battery cells to enable heat exchange.

[0131] In the above 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.

[0132] According to an example of the present application, a battery includes a box body and a battery assembly, the box body includes a box body, the box body is an integral stamped part and includes a bottom wall and a surrounding wall, the battery assembly is arranged in the box 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.

[0133] 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.

[0134] According to an example of the present application, the thermal management system of the battery includes a thermostat, which includes at least one of a first thermostat and a second thermostat. The first thermostat is arranged outside the box body and is in contact with the outer wall of the box body; the second thermostat is arranged inside the box body and is located between the peripheral wall of the battery cell and the box body; at least one of the first thermostat and the second thermostat forms a heat exchanger.

[0135] In the above 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 battery's thermal management system can better manage the battery's heat, so that during the battery operation, the battery assembly can operate in a good temperature environment, thereby making the battery operation more stable and the battery performance better.

[0136] According to an example of the present application, the battery thermal management system also includes a third temperature regulating component, which is arranged in the box body and located 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.

[0137] In the above 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.

[0138] According to an example of the present application, 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.

[0139] In the above embodiment, by arranging 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.

[0140] According to an example of the present application, 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.

[0141] In the above embodiment, by providing multiple ribs, the movement of the heat exchange tube can be restricted, thereby improving the stability of the heat exchange component; at the same time, by setting the thickness of the heat exchange tube to be greater than the depth of the accommodating groove, the heat exchange effect of the heat exchange tube can be guaranteed.

[0142] 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.

[0143] 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.

[0144] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0145] FIG1 is a schematic diagram of a vehicle according to an embodiment of the present application;

[0146] FIG2 is an exploded view of a battery according to an embodiment of the present application;

[0147] FIG3 is an exploded view of a battery according to another embodiment of the present application;

[0148] FIG4 is a schematic diagram of a battery assembly and a heat exchange element according to a first embodiment of the present application;

[0149] FIG5 is a schematic diagram of a battery assembly and a heat exchange element according to a second embodiment of the present application;

[0150] FIG6 is a schematic diagram of a battery assembly and a heat exchange element according to a third embodiment of the present application;

[0151] FIG7 is a schematic diagram of a battery assembly and a heat exchange element according to a fourth embodiment of the present application;

[0152] FIG8 is a schematic diagram of a battery assembly and a heat exchange element according to a fifth embodiment of the present application;

[0153] FIG9 is a schematic diagram of a heat exchange element and a battery box according to some embodiments of the present application;

[0154] FIG10 is a schematic diagram of a heat exchange element and a housing according to other embodiments of the present application;

[0155] FIG11 is a schematic diagram of a heat exchange element according to an embodiment of the present application from an angle;

[0156] FIG12 is a schematic diagram of a current collector according to an embodiment of the present application;

[0157] FIG13 is a schematic diagram of a current collector according to an embodiment of the present application from another angle;

[0158] FIG14 is a schematic diagram of a heat exchange element according to another embodiment of the present application;

[0159] FIG15 is an enlarged view of the circled area A in FIG14 ;

[0160] FIG16 is a schematic diagram of the heat exchange element shown in FIG14 from another angle;

[0161] FIG17 is an enlarged view of the circled point B in FIG16 ;

[0162] FIG18 is a schematic diagram of a battery assembly and a heat exchange element according to a sixth embodiment of the present application;

[0163] FIG19 is a schematic diagram of a battery assembly and a heat exchange element according to a seventh embodiment of the present application;

[0164] FIG20 is a schematic diagram of a battery assembly and a heat exchange element according to an eighth embodiment of the present application;

[0165] FIG21 is a schematic diagram of a battery assembly and a heat exchange element according to a ninth embodiment of the present application;

[0166] FIG22 is a schematic diagram of a battery assembly and a heat exchange element according to a tenth embodiment of the present application;

[0167] FIG23 is a schematic diagram of a battery assembly and a heat exchange element according to an eleventh embodiment of the present application;

[0168] FIG24 is an exploded view of a battery according to yet another embodiment of the present application;

[0169] FIG25 is a partial cross-sectional view of a battery according to yet another embodiment of the present application;

[0170] FIG26 is a partial schematic diagram of a battery according to another embodiment of the present application;

[0171] FIG27 is a partial schematic diagram of the battery shown in FIG24;

[0172] FIG28 is an enlarged view of the circled point C in FIG25 .

[0173] Reference numerals:

[0174] Vehicle 1;

[0175] Battery 1000;

[0176] Heat exchange element 100;

[0177] First heat exchange channel 10; first heat exchange section 11; first heat exchange portion 111; first bend 112; second heat exchange section 12; U-shaped region 120; second heat exchange portion 121; third heat exchange portion 122; second bend 123; third bend 124; fourth heat exchange portion 125; sixth bend 126; fifth heat exchange portion 127; third heat exchange section 13; fourth bend 14; first inlet / outlet section 15; fifth bend 16; second inlet / outlet section 17; seventh bend 18; mounting member 19;

[0178] Current collector 20; tube body 21; first space 211; second space 212; first flow channel interface 22; second flow channel interface 23; partition structure 24; first partition plate 241; second partition plate 242;

[0179] Second heat exchange channel 30; fourth heat exchange section 31; third heat exchange channel 40;

[0180] Battery assembly 200; 201, battery unit 201; 2011, battery cell 2011; 202, first group of battery cells 202; second group of battery cells 203; third group of battery cells 204; fourth group of battery cells 205; fifth group of battery cells 206;

[0181] Box body 300; box body 301; bottom guard plate 302; cover plate 303;

[0182] Foam part 400; body 401; ribs 402;

[0183] Temperature regulating element 500; first temperature regulating element 501; second temperature regulating element 502; third temperature regulating element 503;

[0184] Controller 2000; Motor 3000. DETAILED DESCRIPTION

[0185] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0186] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art 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" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0187] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0188] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0189] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0190] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0191] 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., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0192] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0193] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0194] It is understood that the temperature environment within the battery is affected by external weather conditions. The battery cells within the battery need to be within a certain temperature range during operation. When the temperature within the battery exceeds or falls below this range, the stability and performance of the battery will be significantly affected. For example, in hot weather, the battery cells need to be cooled and dissipated to keep the temperature within the required range. In cold weather, the battery cells need to be heated to keep the temperature within the required range.

[0195] 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 their temperature. However, since the battery cells arranged on the periphery of the battery are closer to the side walls of the box than the internal battery cells, the battery cells on the periphery of the battery can dissipate heat outwards more easily through the side walls or end plates of the battery and are less affected by the heat dissipation of adjacent battery cells; while the battery cells in the interior have difficulty in dissipating heat and 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 operation, which makes the battery less stable during operation and the battery performance is prone to attenuation.

[0196] 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, which includes a first heat exchange channel, and the first heat exchange channel includes a first heat exchange section and a second heat exchange section; the second heat exchange section is bent to form a U-shaped area, and the first heat exchange section is bent and arranged in the U-shaped area, and is connected to the second heat exchange section by bending, thereby enabling the second heat exchange section to exchange heat with multiple battery cells around the battery. When the battery needs to be heated under low temperature conditions, the second heat exchange section It can be located upstream of the first heat exchange section along the fluid flow direction, that is, the high-temperature fluid flows through the second heat exchange section first. 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 around the battery caused by heat dissipation 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.

[0197] The heat exchanger disclosed in this 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 may include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, battery-powered vehicles, electric vehicles, ships, spacecraft, and the like. Electric toys may include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, and spacecraft may include airplanes, rockets, space shuttles, and spacecraft.

[0198] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device according to an embodiment of the present application.

[0199] Referring to Figure 1, Figure 1 is a schematic diagram of a vehicle 1 provided in some embodiments of the present application. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can 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 can be provided at the bottom, head or tail of the vehicle 1. The battery 1000 can be used to power the vehicle 1. For example, the battery 1000 can serve as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 2000 and a motor 3000. The controller 2000 is used to control the battery 1000 to power the motor 3000, for example, for starting, navigating and operating power requirements of the vehicle 1 during driving.

[0200] In some embodiments of the present application, the battery 1000 can serve not only as an operating power source for the vehicle 1 , but also 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 .

[0201] 2-3 , FIG2 is an exploded view of the battery 1000 of some embodiments of the present application, and FIG3 is an exploded view of the battery 1000 of other embodiments of the present application. The battery 1000 includes a case 300, a battery cell 2011 and a heat exchanger 100. The case 300 has a receiving cavity, and the battery cell 2011 is received in the receiving cavity of the case 300. The heat exchanger 100 can be arranged between the battery cell 2011 and the case 300, or between adjacent battery cells 2011.

[0202] The housing 300 is used to provide storage space for the battery cells 2011. The housing 300 can have a variety of structures. In some embodiments, the housing 300 can include a first portion (e.g., the housing body 301 described below) and a second portion (e.g., the cover plate 303 described below). The first and second portions overlap, and together they define a storage space for the battery cells 2011. The second portion can be a hollow structure with one end open, and the first portion can be a plate-like structure, with the first portion overlapping the open side of the second portion, so that the first and second portions together define the storage space. The first and second portions can also be hollow structures with one end open, with the open side of the first portion overlapping the open side of the second portion. Of course, the housing 300 formed by the first and second portions can have a variety of shapes, such as a cylinder, a rectangular parallelepiped, etc. Optionally, in some embodiments, the housing 300 also includes a bottom guard plate 302, which is located on the underside of the housing body 401 to further enhance the bearing strength and impact resistance of the bottom of the housing 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.

[0203] In the battery 1000, there may be multiple battery cells 2011, which may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections within the battery cells 2011. Multiple battery cells 2011 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 2011 structure may be housed within the housing 300. Alternatively, the battery 1000 may be constructed by first connecting multiple battery cells 2011 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a single unit housed within the housing 300. The battery 1000 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 2011.

[0204] Each battery cell 2011 can 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 can be cylindrical, flat, rectangular, or in other shapes.

[0205] In the battery 1000, the heat exchange element 100 can be disposed between the multiple battery cells 2011 and the top wall of the housing 300, between the multiple battery cells 2011 and the bottom wall of the housing 300, between the bottom wall of the housing 300 and the bottom guard plate 302, or between two adjacent battery cells 2011, providing 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. The heat exchange tube is connected to the current collector 20 and may be a flat tube, a round tube, a harmonica tube, or other shaped tube. The current collector 20 may be a rectangular tube, a round tube, or the like.

[0206] The heat exchanger 100 according to the embodiment of the first aspect of the present application is described below with reference to Figures 4 to 17. Figure 4 is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the first embodiment of the present application, Figure 5 is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the second embodiment of the present application, Figure 6 is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the third embodiment of the present application, Figure 7 is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the fourth embodiment of the present application, Figure 8 is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the fifth embodiment of the present application, Figure 9 is a schematic diagram of the heat exchanger 100 and the case 300 of the battery 1000 according to some embodiments of the present application, Figure 10 is a schematic diagram of the heat exchanger 100 and the case 300 according to other embodiments of the present application, and Figure 11 is a schematic diagram of the heat exchanger 100 at an angle according to an embodiment of the present application.

[0207] An embodiment of the present application proposes a heat exchange element 100, as shown in Figure 4, the heat exchange element 100 is used for a battery 1000, and 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 to form a U-shaped area 120, and the first heat exchange section 11 is bent and arranged in the U-shaped area 120, and is bent and connected to the second heat exchange section 12.

[0208] Specifically, the battery 1000 may include multiple battery cells 2011, and the first heat exchange channel 10 is used to exchange heat with the multiple battery cells 2011 of the battery 1000, so that the temperature of the battery 1000 can be limited to a safe operating temperature, thereby ensuring the operating reliability of the battery 1000.

[0209] Among them, the above-mentioned "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 explain 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 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.

[0210] The second heat exchange section 12 is bent to form a U-shaped area 120 , that is, in the direction from one end of the second heat exchange section 12 toward the other end, the second heat exchange section 12 extends along the U-shaped line to form the U-shaped area 120 .

[0211] The first heat exchange section 11 is bent and arranged 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.

[0212] It should be noted that this embodiment only limits the first heat exchange section 11 to being bent within the U-shaped region 120, and does not limit the bending form of the first heat exchange section 11. 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 extend along the length direction of the battery cell 2011 (i.e., the Y1 direction in FIG. 4 ), and after extending to a certain length, bend toward the width direction of the battery cell 2011 (i.e., the X1 direction in FIG. 4 ), and then continue to extend along the length direction of the battery cell 2011 and bend along the width direction. Alternatively, the first heat exchange section 11 can extend along the width direction of the battery cell 2011, and after extending to a certain length, bend toward the length direction of the battery cell 2011, and then continue to extend along the width direction of the battery cell 2011 and bend along the length direction.

[0213] 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.

[0214] 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. Therefore, when the first heat exchange channel 10 is exchanging heat, the heat exchange medium can flow from the first heat exchange section 11 to the second heat exchange section 12, or from the second heat exchange section 12 to the first heat exchange section 11.

[0215] It is understandable that as the heat exchange fluid flows through 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 the battery assembly 200, the heat from the battery cells 2011 is gradually transferred to the heat exchange fluid, causing the temperature of the heat exchange fluid to gradually increase as it flows along the first heat exchange channel 10, the temperature difference between the heat exchange fluid and the battery cells 2011 gradually decreases, and the heat exchange efficiency gradually decreases. When the heat exchange element 100 heats the battery assembly 200, the heat in the heat exchange fluid is gradually transferred to the battery cells 2011, causing the temperature of the heat exchange fluid to gradually decrease as it flows along the first heat exchange channel 10, the temperature difference between the heat exchange fluid and the battery cells 2011 gradually decreases, and the heat exchange efficiency gradually decreases.

[0216] In this embodiment, when the heat exchange element 100 is 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 edge of the battery 1000 can be cooled. Since the heat dissipation of the battery cells 2011 at the peripheral edge 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 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 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 inside the battery 1000 more uniform.

[0217] When the heat exchange element 100 heats 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. For example, 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 can be heated first, and then the heat exchange fluid can 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 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. To meet its heating needs, the battery cells 2011 in 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 its heating needs well. 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 inside the battery 1000 more uniform.

[0218] In the above 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 compensate 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.

[0219] According to an example of the present application, as shown in FIG. 4 , the second heat exchange section 12 may be located at the outermost side of the first heat exchange channel 10 in the circumferential direction.

[0220] That is to say, the second heat exchange section 12 is formed as the outermost flow channel of the first heat exchange 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.

[0221] In the above embodiment, by arranging the second heat exchange section 12 at the outermost side of the circumference of the first heat exchange channel 10, 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, and to a certain extent, improve the service life of the battery assembly 200.

[0222] According to an example of the present application, the first heat exchange section 11 and the second heat exchange section 12 can be bent in the same plane.

[0223] In the above 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. As a result, the structure of the first heat exchange channel 10 can be simplified, the production difficulty of the first heat exchange channel 10 can be reduced, and at the same time, the space occupied by the first heat exchange channel 10 can be reduced, thereby improving the volume energy density of the battery 1000.

[0224] According to an example of the present application, as shown in FIG. 4-FIG . 5 , 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.

[0225] That is, the plurality of first heat exchange sections 111 are sequentially connected, and the connection between two connected first heat exchange sections 111 is bent. For example, the two connected first heat exchange sections 111 can be bent along a fold line or an arc. The number of first heat exchange sections 111 can be two, three, four, five, or more.

[0226] It should be noted that the first heat exchange portion 111 can have various shapes. For example, the first heat exchange portion 111 can be linear or arc-shaped. The first heat exchange portion 111 can also extend in various directions. For example, it can extend along the length or thickness of the battery cell 2011. In this way, multiple first heat exchange portions 111 are connected in a series of bends, allowing the first heat exchange section 11 to form an S-shaped, X-shaped, or V-shaped heat exchange channel.

[0227] In the above embodiment, on the one hand, by providing 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 providing 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.

[0228] According to an example of the present application, as shown in Figure 4, a plurality of first heat exchange parts 111 are arranged at intervals along a first direction (i.e., the Y1 direction shown in Figure 4), and each first heat exchange part 111 extends in a straight line along a second direction (i.e., the X1 direction shown in Figure 4), and the first direction and the second direction are set at an angle.

[0229] The phrase "the first direction and the second direction are arranged at an angle" is intended to illustrate that the first and second directions can be arranged perpendicularly or intersectingly in a non-perpendicular arrangement. For example, the first and second directions can be arranged at an angle of 30°, 60°, 80°, 120°, 150°, or 170°. For example, as shown in FIG4 , 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 portion 111 extends along the length direction of the battery cell 2011 and is arranged at intervals along the thickness direction of the battery cell 2011. In this way, multiple first heat exchange portions 111 are connected by bending to form an S-shaped heat exchange channel, which can achieve heat exchange for multiple battery cells 2011.

[0230] In the above 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 pipe can also increase the flow rate of the heat exchange fluid, and thus improve the heat exchange effect of the first heat exchange channel 10.

[0231] According to an example of the present application, as shown in FIG4 , 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 .

[0232] The first bend 112 is arc-shaped, that is, the first bend 112 extends along an arc, and the fluid flow directions at both ends of the first bend 112 form a certain angle. As a result, the first bend 112 can change the flow direction of the fluid, thereby allowing the two connected first heat exchange sections 111 to be extended and arranged within 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 bend 112 is arc-shaped, and 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 improving the heat exchange efficiency of the first heat exchange section 11.

[0233] Furthermore, the number of the first bends 112 can be one, two, three or more. The first bends 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.

[0234] In the above-described embodiment, by providing the first bend 112, the direction of fluid flow within the first heat exchange section 11 can be changed, achieving a smooth transition between the two first heat exchange sections 111 and a circuitous extension of the first heat exchange channel 10. This increases 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. Furthermore, the arc-shaped first bend 112 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. Furthermore, the provision of the first bend 112 makes the structure of the first heat exchange section 11 more compact, occupies a smaller overall space, and is more conducive to achieving a miniaturized design of the battery 1000, thereby ensuring the volumetric energy density of the battery 1000.

[0235] According to an example of the present application, as shown in FIG4 , the first bending portion 112 may be in a semicircular arc shape.

[0236] That is to say, the first bend portion 112 can extend along a semicircular arc line. Specifically, the first bend 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 bend portion 112. The angle between the inlet and outlet of the first bend portion 112 is 180°, and the flow directions at the outlet and inlet positions of the first bend portion 112 are opposite, so that the two adjacent first heat exchange portions 111 are closer together, and the structure of the entire first heat exchange section 11 is more compact and reliable. Among them, the first bend 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 bend 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.

[0237] 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 can 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.

[0238] In the above 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 production difficulty of the heat exchange component 100 and improving the production speed of the heat exchange component 100.

[0239] According to an example of the present application, as shown in Figure 4, 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 communicated 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.

[0240] 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.

[0241] The first end of the third heat exchange portion 122 is connected to the second heat exchange portion 121 at an angle. That is, the third heat exchange portion 122 is connected to the second heat exchange portion 121, and the third heat exchange portion 122 and the second heat exchange portion 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 portion 122 and the second heat exchange portion 121 can be connected at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0242] The second end of the third heat exchange section 122 is connected to the first heat exchange section 11 at an angle; that is, the second end of the third heat exchange section 122 is connected to the second heat exchange section 121, and the second end of the third heat exchange section 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 section 122 can be connected to the first heat exchange section 11 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, and so on.

[0243] The fourth heat exchange portion 125 is in communication with the second heat exchange portion 121 and is connected to the second heat exchange portion 121 at an angle. That is, the fourth heat exchange portion 125 is connected to the second heat exchange portion 121 at an angle greater than 0° and less than 180°. For example, the fourth heat exchange portion 125 is connected to the second heat exchange portion 121 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0244] 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.

[0245] In the above 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, and thus facilitating the improvement of 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, facilitating the processing and production of the heat exchange component 100.

[0246] According to an example of the present application, as shown in Figure 4, 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 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, 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.

[0247] The plurality of first heat exchange portions 111 are connected by bending in sequence in the first direction. That is, the plurality of first heat exchange portions 111 are arranged sequentially in the first direction, and two adjacent and connected first heat exchange portions 111 are connected by bending in the first direction. The first heat exchange portions 111 may extend along a straight line parallel to the second direction, along a straight line arranged at an angle to the second direction, or along a curve and / or a broken line in the second direction.

[0248] 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 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 flows 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.

[0249] 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°.

[0250] For example, as shown in FIG4 , the first direction may be the length direction of the battery cell 2011 , ie, the direction Y1 shown in FIG4 , and the second direction may be the thickness direction of the battery cell 2011 , ie, the direction X1 shown in FIG4 . Among them, taking the first heat exchange 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 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 away from the coordinate origin along the Y1 direction and extends in a straight line in the X1 direction, and is used to exchange heat with the edge of the battery assembly 200 in the Y1 direction away from the coordinate origin. The third heat exchange part 122 is arranged on the side of the multiple first heat exchange parts 111 close to the coordinate origin along the X1 direction and extends in a straight line in the Y1 direction. The third heat exchange part 122 is used to exchange heat with the edge of the battery assembly 200 in the X1 direction close to the coordinate origin. The fourth heat exchange part 125 is arranged on the side of the multiple first heat exchange parts 111 away from the coordinate origin along the X1 direction and extends in a straight line in the Y1 direction. The fourth heat exchange part 125 can be used to exchange heat with the edge of the battery assembly 200 in the X1 direction away from the coordinate origin.

[0251] In the above embodiment, multiple first heat exchange parts 111 are arranged to be bent and connected in sequence in the first direction, the second heat exchange part 121 is located on one side of the multiple first heat exchange parts 111 along the first direction, the third heat exchange part 122 is located on one side of the multiple first heat exchange parts 111 along the second direction, and the fourth heat exchange part 125 is located on the other side of the multiple 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 processing and manufacturing are facilitated.

[0252] According to some specific embodiments of the present application, as shown in Figure 4, the third heat exchange part 122 and the fourth heat exchange part 125 are extended along the first direction (for example, the Y1 direction shown in Figure 4), and the first heat exchange part 111 and the second heat exchange part 121 are both extended along the second direction.

[0253] Furthermore, the third heat exchange portion 122 and the fourth heat exchange portion 125 can both extend linearly along the first direction, and the first heat exchange portion 111 and the second heat exchange portion 121 can both extend linearly along the second direction. The linear structure is simple, easy to produce, and convenient to arrange, thereby further reducing the production complexity and production cost of the first heat exchange channel 10.

[0254] In the above 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.

[0255] According to some examples of the present application, as shown in Figure 4, the third heat exchange part 122 and the fourth heat exchange part 125 are both extended along the first direction. In the first direction, the length b1 of the fourth heat exchange part 125 is less than or equal to the length a1 of the third heat exchange part 122.

[0256] Among them, when the length b1 of the fourth heat exchange part 125 is equal to the length a1 of 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 standard U-shaped flow channel; when the length b1 of the fourth heat exchange part 125 is less than the length a1 of the third heat exchange part 122, it can be beneficial to avoid other flow channel sections of the first heat exchange flow channel 10 (for example, avoiding the first inlet and outlet section 15 shown in Figure 4), avoid other heat exchange flow channels or avoid other components, thereby being beneficial to the layout of the first heat exchange flow channel 10 and the compact structure.

[0257] In the above embodiment, by setting the length of the fourth heat exchange part 125 equal to the length of the third heat exchange part 122, the dimensions of the two ends of the U-shaped area 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 can be facilitated to connect the fourth heat exchange part 125 to the collector, and the fourth heat exchange part 125 can also avoid other flow channel sections, other flow channel structures or other components of the first heat exchange channel 10.

[0258] According to some specific embodiments of the present application, as shown in FIG. 4 , 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 .

[0259] 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 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 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 farthest from the second heat exchange part 121.

[0260] In this way, the length of the fourth heat exchange portion 125 can be increased, the heat exchange area between the fourth heat exchange portion 125 and the battery assembly 200 can be increased, the heat exchange effect of the heat exchange element 100 can be further improved, and it is also beneficial to the layout of the first heat exchange channel 10.

[0261] In the above embodiment, by setting the fourth heat exchange part 125 to extend along the first direction and extend to a position close to the 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.

[0262] According to an example of the present application, as shown in Figure 6, 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 the 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, 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.

[0263] The plurality of first heat exchange portions 111 are connected by bending in sequence in the first direction. That is, the plurality of first heat exchange portions 111 are arranged sequentially in the first direction, and two adjacent and connected first heat exchange portions 111 are connected by bending in the first direction. The first heat exchange portions 111 may extend along a straight line parallel to the second direction, along a straight line arranged at an angle to the second direction, or along a curve and / or a broken line in the second direction.

[0264] 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 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.

[0265] 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°.

[0266] For example, as shown in FIG6 , the first direction may be the length direction of the battery cell 2011, that is, the direction of Y1 shown in FIG6 , and the second direction may be the thickness direction of the battery cell 2011, that is, the direction of X1 shown in FIG6 , wherein, taking the first heat exchange channel 10 arranged in the Y1 direction away from the coordinate origin in the figure as an example, the first heat exchange portion 111 extends straight along the X1 direction, and the plurality of first heat exchange portions 111 are arranged at intervals in the Y1 direction, and the second heat exchange portion 121 is arranged on one side of the plurality of first heat exchange portions 111 close to the coordinate origin in the X1 direction and extends straight along the Y1 direction for contact with the battery assembly 200 exchanges heat along one side edge 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 side edge of the battery component 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 side edge of the battery component 200 in the Y1 direction close to the coordinate origin.

[0267] In the above embodiment, by arranging the second heat exchange part 121 to be located on one side of the multiple first heat exchange parts 111 along the second direction, the third heat exchange part 122 to be located on one side of the multiple 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 multiple first heat exchange parts 111 along the first direction, another layout of the first heat exchange channel 10 is defined. Thus, the diversity of the first heat exchange channel 10 can be increased so that it can meet the heat exchange requirements of different batteries 1000, simplify the structure of the first heat exchange channel 10, and facilitate processing and manufacturing.

[0268] According to some specific embodiments of the present application, as shown in Figure 6, the first heat exchange part 111, the third heat exchange part 122 and the fourth heat exchange part 125 extend along the second direction (for example, the X1 direction shown in Figure 6), and the second heat exchange part 121 extends along the first direction (for example, the Y1 direction shown in Figure 6).

[0269] 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, easy to produce, and convenient to arrange, thereby further reducing the production complexity and production cost of the first heat exchange channel 10.

[0270] In the above 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.

[0271] According to some examples of the present application, as shown in Figure 6, the first heat exchange part 111 and the third heat exchange part 122 extend along the second direction, the second heat exchange part 121 extends along the first direction, and in the second direction, the length a2 of the third heat exchange part 122 is greater than or equal to the length c1 of the first heat exchange part 111.

[0272] In the above 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, increasing the length of the third heat exchange part 122, and increasing the heat exchange area of ​​the third heat exchange part 122, so that 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 to be 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.

[0273] According to an example of the present application, as shown in Figure 4, 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.

[0274] 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 direction at both ends of the second bending portion 123 has a certain angle, the third bending portion 124 is arc-shaped, that is, the third bending portion 124 extends along the arc line, and the fluid flow direction at both ends of the third bending portion 124 has a certain angle.

[0275] Thus, the second bend 123 and the third bend 124 can change the flow direction of the heat exchange fluid, allowing the second heat exchange section 12 to extend within a predetermined area and be used for heat exchange with the battery assembly 200. At the same time, the curved 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 improving the heat exchange efficiency of the first heat exchange channel 10.

[0276] In the above 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 a smooth transition connection between the third heat exchange section 122 and the second heat exchange section 121 can be achieved, and a smooth transition connection between the third heat exchange section 122 and the first heat exchange section 111 can be achieved. As a result, 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, a circuitous arrangement of the first heat exchange channel 10 can be achieved. In this way, 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.

[0277] According to an example of the present application, as shown in FIG4 , the second bending portion 123 may be in the shape of a quarter arc.

[0278] That is, 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 connecting 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 perpendicular 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 closely aligned 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.

[0279] 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., and the embodiments of the present application are not limited thereto.

[0280] 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 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 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.

[0281] According to an example of the present application, as shown in FIG4 , the third bending portion 124 is in the shape of a quarter arc.

[0282] That is, the third bend 124 can extend along a semicircular arc. Specifically, the third bend 124 can extend along a quarter-circular arc that is convex away from the first connecting section. The angle between the inlet and 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. The third bend 124 connects the third heat exchange section 122 and the first heat exchange section 111. At this time, the third heat exchange section 122 and the first heat exchange section 111 are arranged perpendicular to each other. In this way, the layout of the first heat exchange channel 10 can be made more regular, and the first heat exchange channel 10 can be more closely aligned with the layout of the battery assembly 200. As a result, the heat exchange effect of the first heat exchange channel on the battery assembly 200 can be increased.

[0283] 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., and the embodiments of the present application are not limited thereto.

[0284] In the above 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 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 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.

[0285] According to an example of the present application, as shown in Figure 7, the second heat exchange section 12 may further include: a fifth heat exchange portion 127, which extends along the fourth side periphery of the first heat exchange section 11 and closes at least part of the opening of the U-shaped area 120 formed by the second heat exchange portion 121, the third heat exchange portion 122 and the fourth heat exchange portion 125.

[0286] It can be understood that the fifth heat exchange part 127 can close part of the opening of the U-shaped area 120, or completely close the opening of the U-shaped area 120. Thus, the second heat exchange section 12 can basically cover the peripheral position of the battery assembly 200 and exchange heat with the periphery of the battery assembly 200. In this way, the second heat exchange section 12 can exchange heat with all or most of the peripheries of the battery assembly 200. Thus, 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 requirements, and the second heat exchange section 12 with the fifth heat exchange part 127 can be set to optimize the heat exchange structure of the first heat exchange channel 10 and improve the heat exchange efficiency.

[0287] In the above embodiment, by providing the fifth heat exchange portion 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 a 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.

[0288] According to an example of the present application, as shown in Figure 7, 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.

[0289] It should be noted that, in the above embodiment, the second heat exchange part 121 is arranged on one side of the first heat exchange section 11 in the first direction (for example, the side of the multiple first heat exchange parts 111 shown in Figure 7 along the Y1 direction away from the coordinate origin), and the fifth heat exchange part 127 is arranged opposite to the second heat exchange part 121, that is, the fifth heat exchange part 127 is arranged on the other side of the first heat exchange section 11 in the first direction (for example, the side of the multiple first heat exchange parts 111 shown in Figure 7 along the Y1 direction close to the coordinate origin), and the third heat exchange part 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, the side of the multiple first heat exchange parts 111 shown in Figure 7 along the X1 direction close to the coordinate origin), and 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.

[0290] The fifth heat exchange section 127 is connected to the third heat exchange section 122 at an angle. For example, the fifth heat exchange section 127 is connected to the third heat exchange section 122 at an angle greater than 0° and less than or equal to 180°. For example, the angle between the fifth heat exchange section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc. The fifth heat exchange section 127 is connected to the first heat exchange section 11 at an angle. For example, the fifth heat exchange section 127 is connected to the first heat exchange section 11 at an angle greater than 0° and less than or equal to 180°, etc. For example, the angle between the fifth heat exchange section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0291] 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-circle arc.

[0292] 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.

[0293] 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.

[0294] In other specific embodiments, as shown in Figure 9, 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.

[0295] 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.

[0296] For example, referring to Figure 10, the 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.

[0297] The fifth heat exchange portion 127 and the fourth heat exchange portion 125 may be connected in an arc, for example, the fifth heat exchange portion 127 and the fourth heat exchange portion 125 may be connected in a quarter arc.

[0298] 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.

[0299] 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 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 realize the arrangement of multiple heat exchange channels, thereby meeting the heat exchange requirements of multiple batteries 1000.

[0300] According to an example of the present application, as shown in Figures 4 to 8, 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.

[0301] 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 through the first heat exchange section 11, or from the third heat exchange section 13 to the second heat exchange section 12 through the first heat exchange section 11.

[0302] 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.

[0303] 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, thereby further improving the heat exchange effect of the first heat exchange channel 10 .

[0304] According to an example of the present application, as shown in Figures 4 to 8, 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 connected sequentially in a first direction (for example, the Y1 direction shown in Figure 4); the third heat exchange section 13 is arranged on a side of the first heat exchange section 11 away from the third heat exchange part 122, and the third heat exchange section 13 is connected to the one of the plurality of first heat exchange parts 111 that is closest to the second heat exchange part 121 along the first direction.

[0305] Specifically, the third heat exchange segment 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. Thus, the third heat exchange segment 13 is also arranged circumferentially outside the first heat exchange segment 11. This increases the circumferential heat exchange area of ​​the first heat exchange channel 10 and improves the heat exchange efficiency of the first heat exchange channel 10 at the circumferential side.

[0306] Furthermore, the third heat exchange section 13 and the fourth heat exchange section 125 can be arranged inside and outside of the same side of the first heat exchange section 11, thereby further increasing the heat exchange area at that location and improving heat exchange efficiency. Furthermore, because the third heat exchange section 13 and the fourth heat exchange section 125 are located at opposite ends of the first flow channel in the direction of fluid flow, they can exchange heat with the same area of ​​the battery assembly 200, thereby improving temperature uniformity in that area.

[0307] 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 exchange is performed 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.

[0308] 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 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.

[0309] In the above 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.

[0310] According to an example of the present application, as shown in Figures 4 to 8, the third heat exchange section 13 extends along the first direction toward a direction away from the second heat exchange part 121, and the first heat exchange part 111 extends along the second direction, wherein the first direction and the second direction are set at an angle.

[0311] 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 the first heat exchange part 111 farthest from the second heat exchange part 121. At the same time, the fourth heat exchange part 125 also extends toward the first heat exchange part 111 farthest from the second heat exchange part 121.

[0312] Furthermore, 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. In this case, the third heat exchange section 13 and the fourth heat exchange portion 125 are arranged on the same outer side of the first heat exchange portion 111 in the circumferential direction. The third heat exchange section 13 and the fourth heat exchange portion 125 are respectively located at opposite ends of the first flow channel in the direction of fluid flow. When the third heat exchange section 13 and the fourth heat exchange portion 125 jointly exchange heat with the same area of ​​the battery assembly 200, they can equalize temperature differences at the edge of the battery assembly 200, thereby improving temperature uniformity at the edge of the battery assembly 200.

[0313] In the above embodiment, by setting the third heat exchange section 13 to extend along the first 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, and the temperature uniformity at the edge of the battery assembly 200 can be improved.

[0314] According to an example of the present application, as shown in FIG. 4 to FIG. 8 , 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 .

[0315] In the above embodiment, by setting the third heat exchange section 13 to extend along the first direction to a position close to the 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.

[0316] According to an example of the present application, as shown in Figures 4 to 8, 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.

[0317] The fourth bend 14 is arc-shaped, that is, it extends along an arc, and the fluid flow directions at both ends of the fourth bend 14 form a certain angle. As a result, the fourth bend 14 can change the flow direction of the fluid, thereby causing the third heat exchange section 13 to extend along a predetermined direction. Furthermore, 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 enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0318] In the above-described embodiment, the fourth bend 14 is provided to change the flow direction of the fluid between the third heat exchange section 13 and the first heat exchange section 111. Furthermore, the curved fourth bend 14 can reduce the flow resistance of the fluid, reduce pressure drop, increase the flow rate of the fluid, and further enhance the heat exchange efficiency of the first heat exchange channel 10. Furthermore, the fourth bend 14 can also achieve a circuitous arrangement of the first heat exchange channel 10. This increases the heat exchange area of ​​the first heat exchange channel 10 and makes the structure more compact, further facilitating a miniaturized design of the battery 1000 and improving the volumetric energy density of the battery 1000.

[0319] According to an example of the present application, as shown in FIG. 4 to FIG. 8 , the fourth bending portion 14 is in the shape of a quarter arc.

[0320] That is, the fourth bend 14 can extend along a semicircular arc. Specifically, the fourth bend 14 can extend along a quarter-circular arc that protrudes toward the connection between the second heat exchange portion 121 and the fourth heat exchange portion 125. The angle between the inlet and 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 flow direction. After the fluid passes through the fourth bend 14, the flow direction of the fluid changes by 90°. 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.

[0321] Furthermore, the fourth bend 14 connects the third heat exchange section 13 and the first heat exchange section 111. 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, with the first direction being perpendicular to the second direction. This can make the layout of the first heat exchange channel 10 more regular, allowing the first heat exchange channel 10 to better fit the layout of the battery assembly 200, thereby increasing the heat exchange effect of the first heat exchange channel on the battery assembly 200.

[0322] 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., and the embodiments of the present application are not limited thereto.

[0323] In the above embodiment, by setting the fourth bend 14 to be a quarter arc shape, the flow direction of the fluid can be changed from the original flow direction to perpendicular to the original flow direction after passing through the fourth bend 14; at the same time, the arc shape can also reduce the resistance to fluid flow, so that the fluid can flow smoothly in the fourth bend 14, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0324] According to an example of the present application, as shown in Figures 4 to 8, the first heat exchange channel 10 may also include: a first inlet and outlet section 15, one end of the first inlet and outlet section 15 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.

[0325] 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 into the first heat exchange channel 10 through the first inlet and outlet.

[0326] The first inlet / outlet section 15 is connected to the third heat exchange section 13 at an angle. For example, the first inlet / 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 / outlet section 15 and the third heat exchange section 13 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc.

[0327] In the above embodiment, by setting the first inlet and outlet 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 quickly enter or discharge, thereby improving the heat exchange rate.

[0328] According to an example of the present application, as shown in FIG. 4 to FIG. 8 , 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.

[0329] It can be understood that there is a certain angle between the first inlet and outlet section 15 and the third heat exchange section 13, thereby forming a certain space on the side of the third heat exchange section 13 facing the first inlet and outlet section 15, which can be beneficial to the layout of other components in the battery 1000.

[0330] In the above 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 made more reasonable and convenient for connection with external pipelines; at the same time, the first inlet and outlet can be made away from the battery assembly 200, which is beneficial to reduce the occurrence of damage to the battery assembly 200 due to water leakage at the first inlet and outlet.

[0331] According to an example of the present application, as shown in Figures 4 to 8, 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.

[0332] Among them, the fifth bend 16 is arc-shaped, that is, the fifth bend 16 extends along the arc, and the fluid flow direction at both ends of the fifth bend 16 has a certain angle, thereby realizing the connection between the third heat exchange section 13 and the first inlet and outlet section 15, 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, realizing the liquid inlet or 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.

[0333] In the above 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 shape of the 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.

[0334] According to an example of the present application, as shown in FIG. 4 to FIG. 8 , 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°.

[0335] For example, the central angle corresponding to the fifth bending portion 16 may be 90°, 120°, 150° or 170°.

[0336] As shown in Figure 4, the heat exchange element 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 the shape of a quarter circle. The third heat exchange section 13 is arranged perpendicular to the first inlet and outlet section 15. Simultaneously, 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. The first extension section is connected between the second extension section and the third heat exchange section 13. 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. The first extension section and the third heat exchange section 13 are connected by the fifth bend 16. The central angle corresponding to the arc line of the fifth bend 16 is greater than 90° and less than 135°.

[0337] In the above embodiment, by setting the fifth bend 16 to be arc-shaped, the resistance to fluid flow can be further reduced, so that the fluid can flow smoothly in the fifth bend 16, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency; 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.

[0338] According to an example of the present application, as shown in FIG. 4 to FIG. 8 , 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 .

[0339] The sixth bend 126 is formed into an arc shape, that is, it extends along an arc, and the fluid flow directions at both ends of the sixth bend 126 form a certain angle. As a result, the sixth bend 126 can change the flow direction of the heat exchange fluid, thereby allowing the second heat exchange portion 121 and the fourth heat exchange portion 125 to extend along a predetermined direction. At the same time, the arc-shaped sixth bend 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 improving the heat exchange efficiency of the first heat exchange channel 10.

[0340] In the above-described embodiment, by providing the sixth bend 126, the direction of fluid flow in the first heat exchange channel 10 can be changed, achieving a circuitous arrangement of the first heat exchange channel 10. This can increase the heat exchange area of ​​the first heat exchange channel 10 and improve the heat exchange efficiency of the first heat exchange channel 10. At the same time, the arc-shaped sixth bend 126 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 providing the sixth bend, the second heat exchange section 12 can be formed into a U-shaped region 120, thereby achieving the second heat exchange section 12 surrounding the first heat exchange section, thereby increasing the compactness of the arrangement of the first heat exchange channel 10 and achieving a miniaturized structure of the first heat exchange channel 10, which is conducive to improving the volumetric energy density of the battery.

[0341] According to an example of the present application, as shown in FIG. 4 to FIG. 8 , the sixth bending portion 126 is in the shape of a quarter circle.

[0342] That is, 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 raised away from the first heat exchange section 11. The angle between the inlet and outlet of the sixth bend 126 is 90°. The sixth bend 126 is similar to a 90° elbow in a pipe material. It 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 closely aligned 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.

[0343] 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., and the embodiments of the present application are not limited thereto.

[0344] In the above embodiment, by setting the sixth bend 126 to be a quarter arc shape, the flow direction of the fluid can be changed from the original flow direction to perpendicular to the original flow direction after passing through the sixth bend 126; at the same time, the arc shape can further reduce the resistance to fluid flow, so that the fluid can flow smoothly in the sixth bend 126, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0345] According to an example of the present application, as shown in Figures 4 to 8, the first heat exchange channel 10 may further include: a second inlet and outlet section 17, one end of the second inlet and outlet section 17 is connected to the fourth heat exchange part 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.

[0346] The second inlet and outlet are used for the inlet and 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 exchanged fluid through the second inlet and outlet into the first heat exchange channel 10.

[0347] The second inlet / outlet section 17 is connected to the fourth heat exchange portion 125 at an angle. For example, the second inlet / outlet section 17 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 second inlet / outlet section 17 and the fourth heat exchange portion 125 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc.

[0348] In the above embodiment, by setting the second inlet and outlet section 17, it is 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 quickly enter or discharge, thereby improving the heat exchange rate.

[0349] According to an example of the present application, as shown in Figures 4 to 8, 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 (for example, the Y1 direction shown in Figure 4).

[0350] It can be understood that a certain angle is formed between the second inlet and outlet section 17 and the fourth heat exchange part 125. Thus, a certain space is formed on the side of the fourth heat exchange part 125 facing the second inlet and outlet section 17. This is beneficial to the layout of other components in the battery 1000 (such as high-voltage boxes and other structures).

[0351] In the above 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 made more reasonable 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.

[0352] According to an example of the present application, as shown in Figures 4 to 8, the first heat exchange channel 10 also includes: a seventh bend 18, which is arc-shaped and bends and connects between the fourth heat exchange part 125 and the second inlet and outlet section 17.

[0353] Among them, the seventh bend 18 is arc-shaped, that is, the seventh bend 18 has a certain angle, thus, the seventh bend 18 is bent and connected between the fourth heat exchange part 125 and the second inlet and outlet section 17, which can realize the connection between the fourth heat exchange part 125 and the second inlet and outlet section 17, so that the heat exchange fluid can flow smoothly from the fourth heat exchange part 125 to the second inlet and outlet section 17 or from the second inlet and outlet section 17 to the fourth heat exchange part 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.

[0354] In the above embodiment, by providing the seventh bend, the heat exchange fluid can flow smoothly from the fourth heat exchange part 125 to the second inlet and outlet section 17 or from the second inlet and outlet section 17 to the fourth heat exchange part 125, thereby realizing the liquid inlet or outlet of the second inlet and outlet section 17; at the same time, the arc shape of the seventh bend 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.

[0355] According to an example of the present application, as shown in FIG. 4 to FIG. 8 , 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°.

[0356] For example, the central angle corresponding to the seventh bending portion 18 may be 90°, 120°, 150° or 170°.

[0357] As shown in FIG4 , the heat exchange element 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 the shape of a quarter circle. The fourth heat exchange portion 125 is arranged perpendicular to the second inlet and outlet section 17. Meanwhile, 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. The third extension section is connected between the fourth extension section and the fourth heat exchange portion 125. 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. The third extension section and the fourth heat exchange portion 125 are connected by the seventh bend 18. The central angle corresponding to the arc line of the seventh bend 18 is greater than 90° and less than 135°.

[0358] In the above embodiment, by setting the seventh bend 18 to be arc-shaped, the resistance to fluid flow can be further reduced, so that the fluid can flow smoothly in the seventh bend 18, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency; 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 also 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.

[0359] According to an example 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.

[0360] 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 faster, especially under low-temperature heating conditions, the high-temperature heat exchange fluid starts to exchange heat from the second heat exchange section 12, which can enable the first heat exchange channel 10 to preferentially exchange heat with the outer circumference of the battery assembly 200, thereby helping to improve the temperature difference between the inside and outside of the battery assembly 200, and to a certain extent, improve the service life of the battery 1000.

[0361] In the above 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 improving the temperature difference of the battery 1000 in different environments and increasing the service life of the battery 1000 to a certain extent.

[0362] According to an example 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.

[0363] 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.

[0364] Since the high-temperature fluid first enters the second heat exchange section 12 located on the periphery of the first heat exchange channel 10, the second heat exchange section 12 can first heat the battery cells 2011 on the periphery of the battery assembly 200. After the heat exchange fluid enters the first heat exchange section 11, it cools the battery cells 2011 in the middle of the battery assembly 200. Since the battery cells 2011 on the periphery of the battery 1000 dissipate more heat to the external environment, the temperature of the battery cells 2011 on the periphery of the battery 1000 drops more. The heat exchange fluid first heats the battery cells 2011 on the periphery of the battery 1000. The higher temperature heat exchange fluid can increase the temperature of the battery cells 2011 on the periphery while compensating for the heat lost by the battery cells 2011 due to heat dissipation to the external environment, thereby meeting their heating needs. The battery cells 2011 in 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 well. 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 inside the battery 1000 more uniform.

[0365] 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.

[0366] 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 of the battery assembly 200 to the edge 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 thus 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, 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.

[0367] In the above 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.

[0368] According to an example of the present application, as shown in Figures 4 to 10, 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.

[0369] 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 there are multiple heat exchange channels, 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 all of the multiple heat exchange channels may be formed as the first heat exchange channel 10.

[0370] In some specific embodiments, a plurality of heat exchange channels are arranged at intervals along the first direction. For example, as shown in FIG4 , a heat exchange element 100 may include two heat exchange channels, and two first heat exchange channels 10 are arranged at intervals along the first direction. Furthermore, both heat exchange channels may 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. Furthermore, 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.

[0371] In other embodiments, multiple heat exchange channels are arranged to wind around each other. For example, as shown in FIG9 , a heat exchange element 100 has two heat exchange channels arranged in parallel, the two heat exchange channels wind around each other, and further, both heat exchange channels can be formed into first heat exchange channels 10. As shown in FIG10 , a heat exchange element 100 has three heat exchange channels arranged in parallel, the three heat exchange channels wind around each other, and all three heat exchange channels can be formed into first heat exchange channels.

[0372] 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.

[0373] 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 different needs of the battery 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.

[0374] According to an example of the present application, as shown in Figure 4, a plurality of 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.

[0375] 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, forming the two heat exchange channels located at both ends of the first direction into the first heat exchange channel 10 can make the battery cells 2011 at both ends of the battery assembly 200 in the first direction have better temperature uniformity performance, thereby achieving overall temperature uniformity of the battery assembly 200.

[0376] 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.

[0377] “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 in a non-vertical arrangement that only intersects. For example, the first direction and the second direction can be arranged at an angle of 30°, 60° or 80°.

[0378] In the above embodiment, by setting two symmetrically arranged first heat exchange channels 10, liquid can be fed into both sides at the same time, the liquid inlet flow rate is increased, the length of a single heat exchange channel is shortened, and the pressure drop in a single heat exchange channel is reduced, thereby improving the heat exchange efficiency.

[0379] According to an example of the present application, as shown in FIG. 4 , the plurality of heat exchange channels are symmetrically arranged about the center line of the heat exchange element 100 along the second direction.

[0380] 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.

[0381] In the above embodiment, by setting up multiple heat exchange channels symmetrically arranged 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.

[0382] In some specific embodiments of the present application, multiple heat exchange channels are asymmetrically arranged about the center line of the heat exchange element 100 along the second direction. In this way, 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.

[0383] According to an example of the present application, as shown in Figure 8, 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.

[0384] 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 can 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 can be a simple U-shaped structure. Furthermore, the structure of the second heat exchange channel 30 can be designed according to the actual heat exchange conditions of the battery 1000.

[0385] In addition, the number of second heat exchange channels 30 can be one or more. For example, the number of second heat exchange channels 30 can be one, two, three or more. The number of second heat exchange channels 30 can be selected according to the arrangement of the battery components 200.

[0386] 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.

[0387] According to an example of the present application, as shown in Figure 8, the second heat exchange channel 30 includes a plurality of fourth heat exchange sections 31, and the plurality of fourth heat exchange sections 31 are connected sequentially along the fluid flow direction, wherein the fourth heat exchange sections 31 extend along the second direction, and the plurality of fourth heat exchange sections 31 are arranged at intervals in the first direction.

[0388] Specifically, a plurality of fourth heat exchange sections 31 connected in sequence may form a U-shaped heat exchange channel or an S-shaped heat exchange channel.

[0389] For example, the number of the fourth heat exchange sections 31 may be two, three or more, and the number of the fourth heat exchange sections 31 may be designed according to the size of the battery assembly 200 .

[0390] In the above embodiment, by setting the second heat exchange channel 30 to include multiple fourth heat exchange sections 31 connected in sequence, the structural complexity of the second heat exchange channel 30 can be reduced, and the production cost of the second heat exchange channel 30 can be reduced, thereby reducing the production cost of the heat exchange component 100.

[0391] According to an example of the present application, as shown in Figure 9, the heat exchange element 100 has multiple heat exchange channels, and the multiple 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 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.

[0392] It is understandable that the bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 can be the same or different. The number of the third heat exchange channel 40 can be one or more, for example, the number of the third heat exchange channel 40 can be one, two, three or more.

[0393] For example, as shown in Figure 9, 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 and arranged in the U-shaped area 120 of the first heat exchange channel 10.

[0394] Specifically, the first heat exchange channel 10 and the third heat exchange channel 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 multiple first heat exchange portions 111, third heat exchange portions 122, and fourth heat exchange portions 125 of the first heat exchange channel 10 and the third heat exchange channel 40 extend along the X1 direction, and the second heat exchange portion 121 extends along the Y1 direction. The fourth heat exchange portion 125, the second heat exchange portion 121, and the third heat exchange portion 122 are sequentially bent and connected 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 multiple first heat exchange portions 111, which are arranged within the U-shaped region 120 and spaced apart along the Y1 direction and sequentially bent and connected.

[0395] The third heat exchange section 122 of the first heat exchange channel 10 is arranged on the side of the multiple first heat exchange sections 111 that is farthest from the coordinate origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 that is close to the coordinate origin in the Y1 direction. The third heat exchange channel 40 is connected to the first heat exchange section 111 that is farthest from the coordinate origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40 is arranged on the side of the multiple first heat exchange sections 111 that is close to the coordinate origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 that is farthest from the coordinate origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40 is connected to the first heat exchange section 111 that is closest to the coordinate origin in the Y1 direction. The third heat exchange channel 40 is arranged between the fourth heat exchange section 125 of the first heat exchange channel 10 and the multiple first heat exchange sections 111.

[0396] In addition, the first heat exchange channel 10 and the third heat exchange channel 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 of the first heat exchange channel 10 is connected to the fourth heat exchange part 125, and the second inlet and outlet section 17 is connected to the first heat exchange part 111 closest to the coordinate origin in the Y1 direction; the first inlet and outlet section 15 of the third heat exchange channel 40 is connected to the first heat exchange part 111 farthest from the coordinate origin in the Y1 direction, and the second inlet and outlet section 17 is connected to the fourth heat exchange part 125.

[0397] In the above embodiment, by setting up multiple 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 component 100 and improving the temperature uniformity of the battery 1000.

[0398] According to an example of the present application, as shown in Figure 10, the third heat exchange channel 40 includes a U-shaped area 120 with the same structure as the first heat exchange channel 10, and at least part 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.

[0399] It is understandable that only part of the first heat exchange section 11 of the first heat exchange channel 10 may be arranged in the U-shaped area 120 of the third heat exchange channel 40 , or the entire first heat exchange section 11 may be arranged in the U-shaped area 120 of the third heat exchange channel 40 .

[0400] For example, as shown in FIG10 , the plurality of heat exchange channels include a first heat exchange channel 10 and two third heat exchange channels 40 . The two third heat exchange channels 40 have the same structure as the first heat exchange channel 10 .

[0401] 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 of the two third heat exchange channels 40 are bent and connected in sequence to form a U-shaped structure with its 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, which are arranged within the U-shaped region 120. The plurality of first heat exchange portions 111 extend linearly along the X1 direction and are spaced apart and bent and connected in sequence along the Y1 direction. 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.

[0402] 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.

[0403] The third heat exchange portion 122 of the third heat exchange channel 40a is located on the side of the multiple first heat exchange portions 111 farthest from the coordinate origin in the Y1 direction and is connected to the first heat exchange portion 111 farthest from the coordinate origin in the Y1 direction. The third heat exchange portion 122 of the third heat exchange channel 40a and the first heat exchange portion 111 of the third heat exchange channel 40a farthest from the coordinate origin in the Y1 direction are located between the third heat exchange portion 122 of the first heat exchange channel 10 and the multiple first heat exchange portions 111 of the first heat exchange channel 10. The multiple first heat exchange portions 111 of the first heat exchange channel 10 are located between the first heat exchange portion 111 of the third heat exchange channel 40a farthest from the coordinate origin in the Y1 direction and the second first heat exchange portion 111 of the third heat exchange channel 40a on the side farthest from the coordinate origin in the Y1 direction.

[0404] 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.

[0405] 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 .

[0406] In the above 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 part 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 part 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, further increasing the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 1000.

[0407] According to an example of the present application, as shown in FIG. 9 and FIG. 10 , 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 .

[0408] 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 periphery of the battery assembly 200, thereby improving the heat exchange effect on the periphery of the battery assembly 200.

[0409] In the above embodiment, by setting 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 component 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 increasing the service life of the battery 1000 to a certain extent.

[0410] According to an example 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.

[0411] For example, the number of heat exchange tubes can be one, two, three or more, and the number of heat exchange tubes can be designed according to the size of the battery assembly 200.

[0412] Specifically, heat exchange channels are defined within the heat exchange tubes for circulating the heat exchange fluid. The heat exchange tubes can have various shapes, such as circular tubes and flat tubes. The heat exchange channels defined within the heat exchange tubes can also have various shapes, such as U-shaped channels and meandering channels.

[0413] Furthermore, 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 diversion cavity of the collector 20 , and the outlet ends of the plurality of heat exchange tubes are all connected to the confluence cavity of the collector 20 .

[0414] The heat exchange tubes may be arranged sequentially along the first direction, for example, the heat exchange tubes may be arranged at intervals along the Y1 direction. Of course, the heat exchange tubes may also be arranged around each other, or further, the heat exchange tubes may be arranged around each other in the same plane.

[0415] In the above-described embodiment, by configuring the heat exchange element 100 to include at least one heat exchange tube, not only can the process complexity of the heat exchange element 100 be reduced, thereby increasing the production rate of the heat exchange element 100, but the fluid pressure drop within a single heat exchange tube can also be reduced, thereby improving heat exchange efficiency. Furthermore, compared to a plate-like structure, a tubular structure is simpler, less expensive, and easier to manufacture.

[0416] According to an example of the present application, the heat exchange tube can be formed by bending a single tube.

[0417] Single tube bending refers to the process of bending a single straight tube multiple times through a process such as rolling to form a heat exchange tube. For example, a single straight tube can be bent at multiple preset locations to form a V-shape, U-shape, or other shape. The bending shape of a single tube can be designed based on actual conditions.

[0418] In the above embodiment, by setting the heat exchange tube to be formed by bending a single tube, the number of welding points of the heat exchange element 100 can be reduced, thereby reducing the risk of leakage of the heat exchange element 100 and improving the reliability of the use of the heat exchange element 100; at the same time, the operation process of bending a single tube is simpler than the manufacturing process of the plate structure, thereby significantly reducing the cost of the heat exchange element 100.

[0419] According to an example of the present application, the heat exchange tube is bent in an arc shape at the bending position.

[0420] 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.

[0421] In the above embodiment, by setting the heat exchange tube to bend 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.

[0422] According to an example of the present application, as shown in FIG11 , the bending angle of the heat exchange tube at the bending position is less than 180°.

[0423] For example, the bending angle of the heat exchange tube at the bending position can be 30°, 60°, 90°, 120°, 150° or 179°.

[0424] 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.

[0425] According to an example of the present application, as shown in FIG11 , the heat exchange tube is bent in an arc at a 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.

[0426] 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.

[0427] 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 ellipticality, that is, the larger 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 form a high stress area, resulting in local plastic deformation. When it reaches a certain value, the bearing capacity of the bent tube will be reduced and damaged.

[0428] In the above 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.

[0429] According to an example of the present application, the ratio of the bending radius r of the heat exchange tube to the width d of the heat exchange tube is greater than or equal to 0.8.

[0430] For example, the ratio of the bending radius of the heat exchange tube to the width of the heat exchange tube can be 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 or above.

[0431] 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 during 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.

[0432] According to an example 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.

[0433] 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.

[0434] 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 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.

[0435] According to an example 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%.

[0436] The bending reduction rate is equal to the thickness loss of the heat exchange tube divided by the original thickness multiplied by 100%.

[0437] 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%.

[0438] In the above 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.

[0439] According to an example of the present application, the bending thinning rate of the heat exchange tube is less than or equal to 30%.

[0440] For example, the bending reduction rate of the wall thickness of the heat exchange tube may be 2%, 5%, 10%, 20% or 30%.

[0441] 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.

[0442] According to an example of the present application, the heat exchange tube may be a flat tube or a harmonica tube.

[0443] It is understood that in some embodiments, the heat exchange tube is a flat tube, while 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.

[0444] Specifically, the upper and lower surfaces of the flat tube are flat and have a large contact area, which can increase the heat transfer area of ​​the heat exchange element 100, thereby increasing the heat exchange effect of the heat exchange element 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 exchange element 100, thereby increasing the energy density of the battery 1000.

[0445] Furthermore, a single heat exchange channel may be formed within the flat tube, or multiple heat exchange channels may be formed by providing internal dividers. For example, both the flat tube and the harmonica tube may be provided with divider ribs, which may extend along the length of the flat tube or harmonica tube and divide the heat exchange channel within the flat tube or harmonica tube into multiple sub-channels.

[0446] In the above 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.

[0447] According to an example of the present application, as shown in FIG11 , the wall thickness m of the heat exchange tube may be 0.2 mm to 3 mm.

[0448] 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.

[0449] In the above 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; it can also prevent the wall thickness of the heat exchange tube from being 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.

[0450] According to an example of the present application, as shown in FIG11 , the wall thickness m of the heat exchange tube may be 0.5 mm to 1.2 mm.

[0451] 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.

[0452] 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 lightweighting of the battery 1000.

[0453] According to an example 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.

[0454] Among them, stamping is a forming method that uses a press and a die to apply external force to plates, strips, tubes and profiles, causing 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, reducing the number of parts of the heat exchanger 100, reducing the number of assembly steps of the battery 1000, and improving the assembly speed of the battery 1000.

[0455] 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 100 and thus improve the production rate of the heat exchange component 100; at the same time, stamping is simple to produce and has low material consumption, which can also reduce the production cost of the heat exchange component 100.

[0456] According to an example of the present application, as shown in FIG11 , the width f of the heat exchange channel may be 3 mm to 200 mm.

[0457] For example, the width f of the heat exchange channel can 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 can be designed according to the layout of the heat exchange channel and the width of the battery cell 2011.

[0458] In the above 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 component 100; the width of the heat exchange channel can also be prevented from being too small, so that the number of arranged first heat exchange sections 11 can be reduced, thereby reducing the overall cost of the heat exchange component 100.

[0459] According to an example of the present application, the width f of the heat exchange channel is 5 mm-80 mm.

[0460] 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.

[0461] 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 component 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 component 100.

[0462] According to an example of the present application, the height of the heat exchange channel in the third direction is 1 mm-20 mm.

[0463] For example, the third direction can refer to the top-down direction shown in Figure 3, and the height of the heat exchange channel in the third direction can be 1mm, 2mm, 3mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm or 20mm.

[0464] In the above 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.

[0465] According to an example of the present application, the height of the heat exchange channel in the third direction is 4 mm-6 mm.

[0466] For example, the height of the heat exchange channel in the third direction may be 4 mm, 5 mm, or 6 mm.

[0467] In the above embodiment, by setting the height of the heat exchange channel in the third direction to 4mm-6mm, 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.

[0468] According to an example of the present application, the number of heat exchange channels is 2 to 4.

[0469] 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.

[0470] 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.

[0471] The current collector 20 according to an embodiment of the present application is described below with reference to Figures 12 and 13. Figure 12 is a schematic diagram of the current collector 20 according to an embodiment of the present application, and Figure 13 is a schematic diagram of the current collector 20 according to an embodiment of the present application from another angle.

[0472] According to an example of the present application, as shown in Figures 12-13, the heat exchanger 100 may also include a collector 20, which includes: a tube body 21, multiple first flow channel interfaces 22, multiple second flow channel interfaces 23 and a separation structure 24, the multiple first flow channel interfaces 22 correspond one-to-one to and are connected to the first inlets and outlets of the multiple heat exchange channels; the multiple second flow channel interfaces 23 correspond one-to-one to and are connected to the second inlets and outlets of the multiple 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 multiple first flow channel interfaces 22; the separation structure 24 is arranged inside the tube body 21, and the separation structure 24 separates the first flow channel interface 22 and the second flow channel interface 23 inside the tube body 21, and the multiple second flow channel interfaces 23 are connected inside the tube body 21.

[0473] Specifically, the pipe body 21 is used to collect and distribute heat exchange fluids. A first flow channel interface 22 and a second flow channel interface 23 are provided on the pipe body 21. The first and second flow channel interfaces 22 and 23 are respectively connected to the inlet and outlet of the heat exchange channel, and are used to input and output the heat exchange fluid into and out of the manifold. A partition structure 24 is provided within the pipe body 21 and separates the first and second flow channel interfaces 22 and 23 within the pipe body 21. That is, the first and second flow channel interfaces 22 and 23 are not connected within the pipe body 21. This allows the first and second flow channel interfaces 22 and 23 to serve as the input and output ends of the heat exchange channel, respectively. This allows the pipe body 21 and the heat exchange channel to form a complete channel, allowing liquid to enter the heat exchange channel from the pipe body 21 after heat exchange and then be discharged from the pipe body 21, completing the heat exchange process. Therefore, a single pipe body 21 can be used to complete both liquid inlet and outlet operations, thereby reducing the number of manifolds used and the production cost and space occupied by the heat exchange management assembly.

[0474] 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, the 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 the multiple first flow channel interfaces 22 are arranged between the at least two second flow channel interfaces 23. In this way, 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. Alternatively, 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 central area of ​​the battery 1000 to achieve heat exchange, or the heat exchange fluid can flow from the central 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.

[0475] In the above embodiment, by setting a collector 20, using a partition structure 24 to separate multiple first flow channel interfaces 22 and multiple second flow channel interfaces 23, and multiple second flow channel interfaces 23 are connected in the tube body 21, the first flow channel interface 22 and the second flow channel interface 23 can be respectively formed as the input end and output end of the heat exchange channel, and then one tube body 21 can be used to complete the liquid inlet and outlet work, reducing the number of collecting pipes used. 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 multiple, 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 central area to achieve heat exchange, or the heat exchange fluid can flow from the central area of ​​the battery 1000 to the surrounding area to achieve heat exchange, thereby improving the temperature uniformity of the battery 1000 and extending the service life of the battery 1000.

[0476] According to an example of the present application, as shown in Figures 12-13, the tube body 21 is divided into a first space 211 and a second space 212 that 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 that 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.

[0477] The first space 211 and the second space 212 are independent of each other and do not communicate with each other, forming two independent flow channels. The second space 212 includes a first section, a second section, and a third section that are sequentially connected. 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. The first flow channel interface 22 is further provided in the middle of the multiple second flow channel interfaces 23.

[0478] For example, as shown in Figure 12, there are two first flow channel interfaces 22 and two second flow channel interfaces 23. 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.

[0479] In the above 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.

[0480] According to an example of the present application, as shown in Figures 12-13, 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.

[0481] 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 tube body 21 and the first flow channel interface 22. The first partition plate 241 extends along the length direction of the tube body 21 (for example, the Y1 direction shown in Figure 12). The two 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. In the width direction of the tube body 21 (for example, the X1 direction shown in Figure 13), 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.

[0482] 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 only include 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 with 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.

[0483] In the above embodiment, by providing the first partition plate 241 and the second partition plate 242 , two independent spaces are formed inside the tube body 21 , thereby preventing the inflow and outflow of liquid from interfering with each other, thereby improving the heat exchange effect of the battery 1000 .

[0484] The following describes the mounting member 19 according to an embodiment of the present application with reference to Figures 14-17. Figure 14 is a schematic diagram of a heat exchange member 100 according to another embodiment of the present application, Figure 15 is an enlarged view of the circled area A in Figure 14, Figure 16 is a schematic diagram of the heat exchange member 100 shown in Figure 14 from another angle, and Figure 17 is an enlarged view of the circled area B in Figure 16.

[0485] According to an example of the present application, as shown in FIG. 14 to FIG. 17 , the heat exchange element 100 further includes: a first pipe portion, a second pipe portion and a mounting member 19 .

[0486] 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.

[0487] Specifically, the first and second tube portions are primarily used for the fluid collector 20, and are used to supply 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. The first inlet and outlet and the second inlet and outlet can both be used for the inlet and outlet of the heat exchange fluid. When the first inlet and outlet serves as the inlet of the heat exchange fluid, the second inlet and outlet serves as the outlet of the heat exchange fluid; when the first inlet and outlet serves as the outlet of the heat exchange fluid, the second inlet and outlet serves as the inlet of the heat exchange fluid.

[0488] The mounting member 19 is configured to be sealed with the housing 300 of the battery 1000. A through-hole is formed on the mounting member 19, connecting the 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 with 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 with the through-hole.

[0489] 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. In this way, 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.

[0490] In the prior art, in order to reduce the risk of corrosion of the heat exchanger 100, the gaps between the first and second pipelines 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 costs of the battery 1000.

[0491] 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. As a result, the production rate of the battery 1000 can be improved and the labor cost of producing the battery 1000 can be reduced.

[0492] In the above 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.

[0493] According to an example of the present application, as shown in Figures 14 to 17, the mounting member 19 has a cavity with an opening on one side, the mounting member 19 has a mounting plate arranged opposite to the opening of the cavity, 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.

[0494] Among them, 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 face the space on the side away from the first entrance and the second entrance.

[0495] Furthermore, the opening side of the mounting member 19 faces the space on one side away from the first and second inlets and outlets. For example, the opening of the cavity is set away from the current collector 20. In this way, dust and other impurities can be effectively prevented from accumulating in the mounting member 19.

[0496] The mounting member 19 is adapted to be positioned between the housing 401 and the bottom guard plate 302. This means that the heat exchange element 100 is positioned between the bottom wall of the housing 401 and the guard plate, or, more accurately, outside the housing 401. This effectively reduces damage to the battery cells 2011 caused by leakage from the heat exchange element 100. Furthermore, the bottom guard plate 302, positioned on the underside of the housing 401, further strengthens the structural strength of the bottom of the battery 1000 and increases the bearing capacity of the bottom plate. It also provides protection against impacts from the bottom, effectively reducing safety issues associated with multiple battery cells 2011 and the heat exchange element 100.

[0497] 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 into 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.

[0498] For example, as shown in Figures 14 to 17, 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, and 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.

[0499] 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.

[0500] Furthermore, there are one or more first through holes, and the first through holes correspond to the first tube parts one-to-one. There are one or more second through holes, and the second through holes correspond to the second tube parts one-to-one.

[0501] Furthermore, 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. Furthermore, 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.

[0502] Furthermore, the first plate, the second plate and the mounting plate are integrally formed.

[0503] Furthermore, the mounting member 19 further includes stoppers, which are arranged at both ends of the mounting plate in the longitudinal direction. The stoppers are connected to the mounting plate, the first plate, and the second plate in a sealed manner. For example, the stoppers can be welded or adhesively connected to the mounting plate, the first plate, and the second plate. The mounting plate, the first plate, the second plate, and the two stoppers enclose a cavity.

[0504] The surface of the side 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, one 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.

[0505] In addition, it should be noted that a sealing member is provided around the periphery of the heat exchanger 100. The sealing member extends along the circumference of the heat exchanger 100 and is extended into a ring shape. Alternatively, the sealing member surrounds the heat exchanger 100 and both ends of the sealing member are connected to the mounting member 19. The sealing member may be a sealant.

[0506] In the above 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 lightweighting of the 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.

[0507] Please refer to Figures 4 to 8 again. In the embodiment of the present application, the battery 1000 is provided with the heat exchange element 100 of the first embodiment mentioned above, and the second heat exchange section 12 of the heat exchange element 100 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 element 100 is used to exchange 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 element 100 can compensate 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 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.

[0508] According to an example of the present application, as shown in Figures 18 to 24, the battery 1000 specifically includes: a battery assembly 200, the battery assembly 200 includes a battery cell 201, the battery cell 201 includes a plurality of battery cells 2011 stacked in sequence along a third direction (for example, the X2 direction shown in Figure 24); the heat exchange component 100 is arranged on one side of the battery assembly 200 in a fourth direction (for example, the Z direction shown in Figure 24) and exchanges heat with the battery assembly 200; wherein the third direction and the fourth direction are arranged at an angle.

[0509] Specifically, the battery assembly 200 is primarily used to store and release energy and is a core component of the battery 1000. The heat exchanger 100 is used to exchange heat with the battery assembly 200, keeping the temperature of the battery assembly 200 within a safe operating range, thereby improving the reliability and service life of the battery assembly 200.

[0510] Furthermore, the phrase "the third direction and the fourth direction are arranged at an angle" is intended to indicate that the third and fourth directions can be arranged perpendicularly. For example, as shown in Figure 24 , the third direction can be the thickness direction of the battery cell 2011, i.e., the X2 direction shown in Figure 24 , and the fourth direction can be the height direction of the battery cell 2011, i.e., the Z direction shown in Figure 24 . Thus, multiple battery cells 2011 are stacked along the thickness direction of the battery cells 2011 to form the battery unit 201, and the heat exchange element 100 is arranged on one side of the battery assembly 200 in the height direction to exchange heat with the battery assembly 200. The third and fourth directions can also be arranged so as to intersect in a non-perpendicular manner. For example, the third and fourth directions can be arranged at an angle of 30°, 60°, or 80°.

[0511] 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.

[0512] 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.

[0513] According to an example of the present application, as shown in FIG4 and FIG18 , a plurality of battery cells 2011 located at the outermost circumference of the battery assembly 200 form a peripheral battery cell group, and at least a portion of the second heat exchange section 12 is in contact with the peripheral battery cell group.

[0514] It is understood that the second heat exchange section 12 may be at least partially or entirely in contact with the surrounding battery cell groups. Since the periphery of the battery assembly 200 dissipates more heat to the environment, the temperature of the surrounding battery cell groups is lower than that of the inner battery cells, while the temperature of the heat exchange fluid within the second heat exchange section 12 is always the highest. Therefore, at least partially contacting the second heat exchange section 12 with the surrounding battery cell groups can improve the heat exchange efficiency of the surrounding battery cell groups, thereby further balancing the temperature differences caused by heat dissipation within the battery assembly 200.

[0515] In the above embodiment, by arranging at least a portion of the second heat exchange section 12 to be in contact with 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.

[0516] According to an example of the present application, as shown in Figures 7 and 19, the battery assembly 200 includes a battery cell 201, and all battery cells 2011 of the battery cell 201 together form a peripheral battery cell, or, the battery assembly 200 includes multiple battery cells 201, and the multiple battery cells 201 are arranged in sequence along the fifth direction (for example, the Y2 direction shown in Figure 19), and the multiple battery cells 201 located at the outermost periphery of the battery assembly 200 together form a peripheral battery cell, and the third direction, the fourth direction and the fifth direction are arranged at angles to each other.

[0517] 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.

[0518] Specifically, when the battery assembly 200 includes a battery unit 201, all the 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.

[0519] When the battery assembly 200 includes multiple battery cells 201, the multiple battery cells 201 located at the outermost periphery 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.

[0520] In the above 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. Therefore, the specific structure and layout of the second heat exchange section 12 and the first heat exchange section 11 are not restricted, and the layout complexity of the first heat exchange channel 10 can be reduced; by setting multiple battery cells 201 and multiple battery cells 2011 located at the outermost periphery of the battery assembly 200 to form a peripheral battery cell together, 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.

[0521] In the above embodiment, multiple battery cells 201 are arranged at the outermost periphery of the battery assembly 200 to form peripheral battery cells. This can limit the heat exchange position of the second heat exchange section 12, thereby facilitating the layout of the heat exchange flow channel.

[0522] Please refer to Figures 4 and 18 again. 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 that are arranged adjacent to each other. The multiple battery cells 2011 included in the first group of battery cells 202 are stacked along the third direction, the multiple battery cells 2011 included in the second group of battery cells 203 are stacked along the fifth direction, and the multiple battery cells 2011 included in the third group of battery cells 204 are stacked along the fifth direction.

[0523] For example, as shown in FIG18 , the third direction may be the thickness direction of the battery cell 2011, i.e., the X2 direction shown in FIG18 , and the fifth direction may be the length direction of the battery cell 2011, i.e., the Y2 direction shown in FIG18 . Thus, the plurality of battery cells 2011 included in the first group of battery cells 202 are stacked along the thickness direction of the battery cell 2011, the plurality of battery cells 2011 included in the second group of battery cells 203 are stacked along the length direction of the battery cell 2011, and the plurality of battery cells 2011 included in the third group of battery cells 204 are stacked along the length direction of the battery cell 2011. As shown in FIG18 , the first group of battery cells 202 is arranged at one of the two ends 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.

[0524] 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 connected to each other; the second heat exchange part 121 extends and fits to the first group of battery cells 202 to enable heat exchange, and / or, the third heat exchange part 122 extends and fits to the second group of battery cells 203 to enable heat exchange, and / or, the fourth heat exchange part 125 extends and fits to the third group of battery cells 204 to enable heat exchange.

[0525] 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 portion 121, the third heat exchange portion 122 or the fourth heat exchange portion 125 can be in contact with the peripheral battery monomer, such as the second heat exchange portion 121 and the first group of battery monomers 202 for heat exchange, or the third heat exchange portion 122 and the second group of battery monomers 203 for heat exchange, or the fourth heat exchange portion 125 and the third group of battery monomers 204 for heat exchange; or two of the second heat exchange portion 121, the third heat exchange portion 122 or the fourth heat exchange portion 125 can be in contact with the peripheral battery monomer, such as the second heat exchange portion 121 and the first group of battery monomers 202 The third heat exchange part 122 is in close contact with the second group of battery cells 203 for heat exchange, or the second heat exchange part 121 is in close contact with the first group of battery cells 202 for heat exchange, and the fourth heat exchange part 125 is in close contact with the third group of battery cells 204 for heat exchange, or the third heat exchange part 122 is in close contact with the second group of battery cells 203 for heat exchange, and the fourth heat exchange part 125 is in close contact with the third group of battery cells 204 for heat exchange; the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125 can also be in close contact with the peripheral battery cells, such as the second heat exchange part 121 is in close contact with the first group of battery cells 202 for heat exchange, the third heat exchange part 122 is in close contact with the second group of battery cells 203 for heat exchange, and the fourth heat exchange part 125 is in close contact with the third group of battery cells 204 for heat exchange.

[0526] In the above embodiment, since the first group of battery cells 202, the second group of battery cells 203 and the third group of battery cells 204 are all peripheral battery cell groups, wherein the peripheral battery cell group is arranged at the outermost periphery of the battery assembly 200, closest to the side wall of the battery case 300, has more heat exchange with the environment, and has a lower temperature than the battery cells at other positions, then by setting at least one of the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125 to be in contact with the peripheral battery cells for heat exchange, the heat exchange component 100 can stably and reliably cool or heat the peripheral battery cell group, so that the battery assembly 200 can have a good heat exchange effect, and the temperature distribution in the battery assembly 200 is more uniform, thereby making the battery 100 operate more stably.

[0527] According to an example of the present application, as shown in Figure 20, the peripheral battery cells also include a fourth group of battery cells 205, and the multiple battery cells 2011 included in the fourth group of battery cells 205 are arranged along the third direction. The second heat exchange section 12 also includes a fifth heat exchange part 127, and the fifth heat exchange part 127 closes at least part of the opening of the U-shaped area 120 formed by the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125. The fifth heat exchange part 127 extends and fits the fourth group of battery cells 205 to enable heat exchange.

[0528] In the above embodiment, the peripheral battery cell group further includes a fourth group of battery cells 205. The fourth group of battery cells 205 can be arranged opposite the first group of battery cells 202 in the fifth direction. The fourth group of battery cells 205 is disposed on a side of the battery assembly 200 adjacent to the sidewall of the battery 1000. For example, the fourth group of battery cells 205 and the first group of battery cells 202 can be respectively disposed at opposite ends of Y2 of the battery assembly 200. The fifth heat exchange portion 127 of the second heat exchange section 12 is in contact with the fourth group of battery cells 205. When the heat exchange fluid flows along the second heat exchange section 12, the heat exchange fluid exchanges heat with the fourth group of battery cells along the fifth heat exchange portion 127.

[0529] For example, when the heat exchange element 100 exchanges heat with the battery assembly 200, the heat exchange fluid may first enter the second heat exchange section 12. Within the second heat exchange section 12, the heat exchange fluid first flows into the fourth heat exchange portion 125, flows along the fifth direction within the fourth heat exchange portion 125, and exchanges heat with the third group of battery cells 204. Then, the heat exchange fluid enters the second heat exchange portion 121, flows along the third direction within the second heat exchange portion 121, and exchanges heat with the first group of battery cells 202. Then, the heat exchange fluid enters the third heat exchange portion 122, flows along the fifth direction within the third heat exchange portion 122, and exchanges heat with the second group of battery cells 203. Finally, the heat exchange fluid enters the fifth heat exchange portion 127, flows along the third direction, and exchanges heat with the fourth group of battery cells 205. Finally, the heat exchange fluid flows into the first heat exchange section 11 to exchange heat with the battery cells 2011 located inside the peripheral battery cell group in the battery assembly 200. Of course, the heat exchange fluid may also first flow into the first heat exchange section 11 and then flow into the second heat exchange section 12 to exchange heat with the battery assembly 200, which will not be repeated here.

[0530] In the above embodiment, a fifth heat exchange portion 127 is provided in the second heat exchange section 12 to fit with the fourth group of battery cells 205, so that the heat exchange component 100 can better cooperate with the heat dissipation conditions of the battery cells 2011 at different positions in the battery 1000 to arrange the heat exchange flow channels, so that the heat exchange component 100 has a better heat exchange effect on the battery assembly 200, thereby making the internal temperature distribution of the battery 1000 more uniform during operation, thereby making the battery 1000 operate more stably.

[0531] Please refer to Figures 4 and 18 again. In the embodiment of the present application, the second heat exchange part 121 extends along the second direction, and the second direction and the third direction are the same direction. The third heat exchange part 122 and the fourth heat exchange part 125 extend along the first direction, and the first direction and the fifth direction are the same direction.

[0532] Specifically, the battery unit 201 includes a plurality of battery cells 2011 stacked in sequence along the third direction, and the plurality of battery cells 201 are arranged in sequence along the fifth direction. Thus, the second heat exchange portion 121 extends along the stacking direction of the plurality of battery cells 2011, and the third heat exchange portion 122 and the fourth heat exchange portion 125 extend along the arrangement direction of the plurality of battery cells 201. That is, the second heat exchange portion 121 can perform heat exchange on the plurality of battery cells 2011 of a battery unit 201, and the third heat exchange portion 122 and the fourth heat exchange portion 125 can perform heat exchange on the plurality of battery cells 2011 of a plurality of battery units 201.

[0533] It should be noted that there are generally two ways to stack multiple battery cells 2011: one is stacking along the thickness direction of the battery cells 2011, and the other is stacking along the length direction of the battery cells 2011. When multiple battery cells 2011 are stacked along the thickness direction of the battery cells 2011, the multiple battery units 201 are arranged sequentially along the length direction of the battery cells 2011; when multiple battery cells 2011 are stacked along the length direction of the battery cells 2011, the multiple battery units 201 are arranged sequentially along the thickness direction of the battery cells 2011. Therefore, when multiple battery cells 2011 are stacked along the thickness direction of the battery cell 2011, the second heat exchange part 121 can exchange heat for multiple battery cells 2011 of one battery unit 201 along the thickness direction of the battery cell 2011, and the third heat exchange part 122 and the fourth heat exchange part 125 can exchange heat for multiple battery cells 2011 of multiple battery units 201 along the length direction of the battery cell 2011; when multiple battery cells 2011 are stacked along the length direction of the battery cell 2011, the second heat exchange part 121 can exchange heat for multiple battery cells 2011 of one battery unit 201 along the length direction of the battery cell 2011, and the third heat exchange part 122 and the fourth heat exchange part 125 can exchange heat for multiple battery cells 2011 of multiple battery units 201 along the width direction of the battery cell 2011, which can ensure heat exchange efficiency and effect.

[0534] Please refer to Figure 18 again. The second direction is the thickness direction of the battery cell 2011, that is, the direction of X2 as shown in Figure 18, and the first direction is the length direction of the battery cell 2011, that is, the direction of Y2 as shown in Figure 18. Therefore, the multiple battery cells 2011 included in the battery unit 201 are stacked along the thickness direction of the battery cell 2011, and the multiple battery cells 201 included in the battery assembly 200 are arranged in sequence along the length direction of the battery cell 2011. Therefore, the second heat exchange part 121 can extend along the thickness direction of the battery cell 2011 to achieve heat exchange for multiple battery cells 2011; the third heat exchange part 122 and the fourth heat exchange part 125 can extend along the length direction of the battery cell 2011 and exchange heat with the battery cell 2011. Therefore, the arrangement of the first heat exchange channel 10 of the heat exchange component 100 can be more reasonable, thereby enhancing the heat exchange effect of the heat exchange component 100 on the battery assembly 200.

[0535] In the above embodiment, the second heat exchange part 121 is extended along the second direction, the second direction and the third direction are the same direction, the third heat exchange part 122 and the fourth heat exchange part 125 are extended along the first direction, the first direction and the fifth direction are the same direction, so that the extension directions of the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125 can be designed according to the arrangement of the battery unit 201. Therefore, the arrangement of the first heat exchange channel 10 can better meet the heat exchange requirements of the battery assembly 200 and improve the heat exchange efficiency.

[0536] Please refer to FIG. 21 again. In the embodiment of the present application, the first heat exchange portion 111 extends along the first direction, and the first direction and the fifth direction are the same direction.

[0537] It should be noted that, in this embodiment, the first heat exchange part 111, the third heat exchange part 122 and the fourth heat exchange part 125 can all extend along the first direction, and the second heat exchange part 121 extends along the second direction. In this way, multiple first heat exchange parts 111 are connected to form an S-shaped heat exchange channel extending along the second direction.

[0538] Among them, the first direction can be the length direction of the battery cell 2011. For example, as shown in Figure 21, the first direction is the length direction of the battery cell 2011, that is, the direction of Y2 as shown in Figure 21. Therefore, the first heat exchange part 111 extends along the length direction of the battery cell 2011 and exchanges heat with the battery cell 2011. In this way, the heat exchange area between the first heat exchange part 111 and the battery cell 2011 can be increased, thereby increasing the heat exchange effect of the battery cell 2011; it can also be the thickness direction of the battery cell 2011. In this way, heat exchange of multiple battery cells 2011 can be achieved.

[0539] In the above embodiment, by setting the first heat exchange portion 111 to extend along the first direction, the first direction and the fifth direction are the same direction, so that the first heat exchange portion 111 can extend along the arrangement direction of the multiple battery cells 201, and then the first heat exchange portion 111 can perform heat exchange on the multiple battery cells 2011 of the multiple battery cells 201. When the multiple battery cells 201 are arranged in sequence along the thickness direction of the battery cells 2011, the first heat exchange portion 111 can realize heat exchange for the multiple battery cells 2011; when the multiple battery cells 201 are arranged in sequence along the length direction of the battery cells 2011, the heat exchange area between the first heat exchange portion 111 and the battery cells 2011 is increased, thereby increasing the heat exchange effect of the battery cells 2011.

[0540] In some specific embodiments of the present application, the first heat exchange portion 111 extends along the second direction, and the second direction and the third direction are the same direction.

[0541] It can be understood that the first heat exchange part 111 and the second heat exchange part 121 extend in the same direction, the first heat exchange part 111 and the second heat exchange part 121 are arranged in parallel and spaced apart, the third heat exchange part 122 and the fourth heat exchange part 125 extend along the first direction, and the first direction and the fifth direction are the same direction.

[0542] Please refer to Figure 20 again. The second direction is the thickness direction of the battery cell 2011, that is, the direction of X2 as shown in Figure 20. The first direction is the length direction of the battery cell 2011, that is, the direction of Y2 as shown in Figure 20. At this time, the first heat exchange portion 111 and the second heat exchange portion 121 both extend along the thickness direction of the battery cell 2011 and can exchange heat with the battery cell 2011 along the thickness direction of the battery cell 2011. Therefore, when the length of the first heat exchange portion 111 is constant, the first heat exchange portion 111 extending along the second direction can exchange heat with more battery cells 2011 than the first heat exchange portion 111 extending along the first direction. for heat exchange; when the number of bending times of the first heat exchange section 11 is certain, the first heat exchange portion 111 extending along the second direction is closer to the first heat exchange portion 111 extending along the first direction, so that the heat exchange effect is better; when one battery cell 2011 is limited to exchange heat with two heat exchange portions, the number of first heat exchange portions 111 extending along the second direction and arranged along the first direction is lower than the number of first heat exchange portions 111 extending along the first direction and arranged at intervals along the second direction, that is, the number of required bending times is small, and thus the first heat exchange portion 11 is less difficult to form and is easy to process.

[0543] Therefore, the first heat exchange part 111 extends along the second direction, which can not only meet the heat exchange effect, but also reduce the number of first heat exchange parts 111, thereby reducing the number of bending times of the first heat exchange channel 10, reducing the pressure drop of the heat exchange fluid in the first heat exchange channel 10, and improving the heat exchange efficiency. At the same time, it can also reduce the molding difficulty and production cost of the heat exchange component 100, and improve the production rate of the heat exchange component 100.

[0544] In the above embodiment, by setting the first heat exchange part 111 to extend along the second direction, the number of first heat exchange parts 111 can be reduced, the number of bends of the first heat exchange channel 10 can be reduced, the pressure drop of the heat exchange fluid in the first heat exchange channel 10 can be reduced, and the heat exchange efficiency can be improved.

[0545] Please refer to Figures 18 to 23 again. In an embodiment of the present application, the battery assembly 200 includes a plurality of battery cells 201 arranged in sequence along the fifth direction. At least one battery cell 201 located at both ends in the fifth direction is a 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.

[0546] Among them, the above-mentioned "at least one battery cell 201 located at both ends in the fifth direction is a first group of battery cells 202" is intended to indicate that either one of the battery cells 201 located at both ends in the fifth direction can be formed into a first group of battery cells 202, or both battery cells 201 located at both ends in the fifth direction can be formed into a first group of battery cells 202.

[0547] The above “the second heat exchange part 121 and at least one first heat exchange part 111 of the first heat exchange section 11 are jointly attached to the first group of battery cells 202” is intended to indicate that the first group of battery cells 202 can be attached to and exchange heat with the second heat exchange part 121 and one first heat exchange part 111, or can be attached to and exchange heat with the second heat exchange part 121 and multiple first heat exchange parts 111. For example, the number of first heat exchange parts 111 attached to and exchange heat with the first group of battery cells 202 can be two, three or more.

[0548] In the above embodiment, by providing the second heat exchange portion 121 and at least one first heat exchange portion 111 of the first heat exchange section 11 to jointly exchange heat with the first group of battery cells 202, the heat exchange area between the first heat exchange channel 10 and the first group of battery cells 202 can be increased. At the same time, the temperature difference at different positions of the first group of battery cells 202 can be balanced, thereby improving the temperature uniformity of the first group of battery cells 202.

[0549] According to an example of the present application, as shown in Figure 18, there are multiple first heat exchange parts 111, which are bent and connected in sequence in a first direction (for example, the Y1 direction shown in Figure 18); the second heat exchange part 121 and the first heat exchange part 111 farthest away from the second heat exchange part 121 along the connecting line connected in sequence exchange heat with the first group of battery cells 202.

[0550] Among them, the first heat exchange part 111 and the second heat exchange part 121 both extend along the second direction (for example, the X1 direction shown in Figure 18), and the first heat exchange part 111 and the second heat exchange part 121 are connected through the third heat exchange part 122. 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. Therefore, the second heat exchange part 121 and the first heat exchange part 111 that is farthest away from the second heat exchange part 121 along the connecting line connected in sequence are heat-exchanged with the first group of battery cells 202. That is, the second heat exchange part 121 and the first heat exchange part 111 closest to the second heat exchange part 121 are heat-exchanged with the first group of battery cells 202.

[0551] Specifically, when the battery assembly 200 is heated, the high-temperature heat exchange fluid can enter the second heat exchange part 121 through the fourth heat exchange part 125. At this time, the temperature of the heat exchange fluid in the second heat exchange part 121 is relatively high, and then the heat exchange fluid flows through the third heat exchange part 122 to the first heat exchange section 11. In the first heat exchange section 11, the heat exchange fluid first enters the first heat exchange part 111 farthest from the second heat exchange part 121, and then passes through multiple first heat exchange parts 111 in turn to exchange heat with the battery assembly 200 until it flows to the first heat exchange part 111 farthest along the fluid flow direction. The first heat exchange part 111 is closest to the second heat exchange part 121 in a straight line, and exchanges heat with the first group of battery cells 202 together with the second heat exchange part 121. Among them, the temperature of the heat exchange fluid entering the second heat exchange part 121 is higher, close to the inlet temperature of the first heat exchange c...

Claims

1. A heat exchange component for a battery, wherein: It includes a first heat exchange channel, which includes a first heat exchange section and a second heat exchange section; the second heat exchange section is bent to form a U-shaped area, the first heat exchange section is bent and arranged in the U-shaped area, and is bent and connected to the second heat exchange section.

2. The heat exchange element according to claim 1, wherein: The second heat exchange section is located at the outermost side of the first heat exchange channel in the circumferential direction.

3. The heat exchange element according to claim 1, wherein: The first heat exchange section and the second heat exchange section are bent in the same plane.

4. The heat exchange element according to claim 1, wherein: The first heat exchange section includes a plurality of first heat exchange parts, which are arranged at intervals and are bent and connected in sequence.

5. The heat exchange element according to claim 4, wherein: The plurality of first heat exchange parts are arranged at intervals along the first direction, each of the first heat exchange parts extends linearly along the second direction, and the first direction and the second direction are arranged at an angle.

6. The heat exchange element according to any one of claims 4 to 5, wherein: 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.

7. The heat exchange element according to any one of claims 1 to 6, wherein: 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 communicated with the second heat exchange part, connected to the second heat exchange part at an angle, and extends along the third side circumference of the first heat exchange section.

8. The heat exchange element according to claim 7, wherein: 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 portion is located on one side of the plurality of first heat exchange portions along the first direction, the third heat exchange portion is located on one side of the plurality of first heat exchange portions 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 is connected to one end of the second heat exchange portion along the second direction, a second end of the third heat exchange portion is connected to one of the plurality of first heat exchange portions farthest from the second heat exchange portion along the first direction, the fourth heat exchange portion is located on the other side of the plurality of first heat exchange portions along the second direction, one end of the fourth heat exchange portion is connected to one end of the second heat exchange portion away from the third heat exchange portion, and the other end of the fourth heat exchange portion extends along the first direction toward a direction away from the second heat exchange portion; or, The second heat exchange section is located on one side of the multiple first heat exchange sections along the second direction, and the third heat exchange section is located on one side of the multiple first heat exchange sections 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 section is connected to one end of the second heat exchange section along the first direction, and the second end of the third heat exchange section is connected to the one of the multiple first heat exchange sections that is closest to the third heat exchange section along the first direction; the fourth heat exchange section is located on the other side of the multiple first heat exchange sections along the first direction, one end of the fourth heat exchange section is connected to one end of the second heat exchange section away from the third heat exchange section, and the other end of the fourth heat exchange section extends along the second direction toward a direction away from the second heat exchange section.

9. The heat exchange element according to claim 8, wherein: The third heat exchange portion and the fourth heat exchange portion are extended along the first direction, and the first heat exchange portion and the second heat exchange portion are both extended along the second direction; or, The first heat exchange portion, the third heat exchange portion and the fourth heat exchange portion are all extended along the second direction. The second heat exchange portion is extended along the first direction.

10. The heat exchange element according to claim 9, wherein: The third heat exchange portion and the fourth heat exchange portion are both extended along a first direction, and in the first direction, the length of the fourth heat exchange portion is less than or equal to the length of the third heat exchange portion; or, The first heat exchange portion and the third heat exchange portion extend along the second direction, the second heat exchange portion extends along the first direction, and in the second direction, a length of the third heat exchange portion is greater than or equal to a length of the first heat exchange portion.

11. The heat exchange element according to any one of claims 9 to 10, wherein: 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.

12. The heat exchange element according to any one of claims 8 to 10, wherein: 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.

13. The heat exchange element according to any one of claims 7 to 10, wherein: 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 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.

14. The heat exchange element according to claim 13, wherein: The fifth heat exchange portion is arranged opposite to the second heat exchange portion, The fifth heat exchange part is connected between the second end of the third heat exchange part and the first heat exchange section, and is connected to the third heat exchange part at an angle, and is connected to the first heat exchange section at an angle; or, one end of the fifth heat exchange part is connected to an end of the fourth heat exchange part away from the second heat exchange part, and the fifth heat exchange part is connected to the fourth heat exchange part at an angle.

15. The heat exchange element according to claim 7, wherein: 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.

16. The heat exchange element according to claim 15, wherein: 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 a first direction; The third heat exchange section is arranged on a side of the first heat exchange section away from the third heat exchange part, and the third heat exchange section is connected to one of the plurality of first heat exchange parts that is closest to the second heat exchange part along the first direction.

17. The heat exchange element according to claim 16, wherein: 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.

18. The heat exchange element according to claim 17, wherein: 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.

19. The heat exchange element according to any one of claims 16 to 18, wherein: 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.

20. The heat exchange element according to any one of claims 15 to 19, wherein: The first heat exchange channel further includes: a first inlet and outlet section, one end of which 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.

21. The heat exchange element according to claim 20, wherein: 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.

22. The heat exchange element according to claim 21, wherein: The first heat exchange channel further includes a fifth bending portion, which is arc-shaped and bends and connects between the third heat exchange section and the first inlet and outlet section.

23. The heat exchange element according to claim 7, wherein: The first heat exchange channel also includes: a second inlet and outlet section, one end of the second inlet and outlet section is connected to the fourth heat exchange part at an angle, and the other end of the second inlet and outlet section forms a second inlet and outlet of the first heat exchange channel; and the second inlet and outlet 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.

24. The heat exchange element according to any one of claims 1 to 6, wherein: The first heat exchange section is connected 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 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 upstream of the second heat exchange section along the direction of fluid flow.

25. The heat exchange element according to any one of claims 1 to 6, wherein: 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 the first direction, or arranged around each other, at least one heat exchange channel is formed as the first heat exchange channel, and multiple heat exchange channels are arranged in parallel.

26. The heat exchange element according to claim 25, wherein: The plurality of 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 the 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 set at an angle to the first direction.

27. The heat exchange element according to any one of claims 25-26, wherein: The plurality of heat exchange channels are symmetrically arranged about a center line of the heat exchange element along the second direction.

28. The heat exchange element according to claim 25, wherein: The plurality of heat exchange channels further include: at least one second heat exchange channel, the second heat exchange channel being arranged between two of the first heat exchange channels, wherein the structure of any one of the second heat exchange channels is the same as or different from the structure of the first heat exchange channel.

29. The heat exchange element according to claim 28, wherein: The second heat exchange channel includes a plurality of fourth heat exchange segments, which are sequentially connected. 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.

30. The heat exchange element according to claim 25, wherein: The heat exchange element has multiple heat exchange channels, and the multiple heat exchange channels include one 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. The bending structures of the first heat exchange channel and the third heat exchange channel are the same or different.

31. The heat exchange element according to claim 30, wherein: 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.

32. The heat exchange element according to any one of claims 30-31, wherein: The U-shaped region of the first heat exchange channel is located at the outermost circumference of the heat exchange element.

33. The heat exchange element according to claim 25, wherein: 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.

34. The heat exchange element according to claim 33, wherein: 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.

35. The heat exchange element according to claim 34, wherein: 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.

36. The heat exchange element according to claim 34, wherein: 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%.

37. The heat exchange element according to claim 33, wherein: The wall thickness of the heat exchange tube is 0.2 mm to 3 mm; optionally, the wall thickness of the heat exchange tube is 0.5 mm to 1.2 mm.

38. The heat exchange element according to claim 25, wherein: The heat exchange component includes a heat exchange plate, and the heat exchange channel is formed on the heat exchange plate by stamping.

39. The heat exchange element according to claim 25, wherein: 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.

40. The heat exchange element according to claim 25, wherein: The number of the heat exchange channels is 2 to 4.

41. The heat exchange element according to claim 25, wherein: The heat exchange element further includes a current collector, which includes: pipe body; A plurality of first flow channel interfaces, each of which corresponds to and is connected to a plurality of first inlets and outlets of the heat exchange channels; a plurality of second flow channel interfaces, the plurality of second flow channel interfaces corresponding one-to-one to and connected with the second inlets and outlets of the plurality of heat exchange channels, and at least two of the second flow channel interfaces are respectively located on both sides of the plurality of first flow channel interfaces along the extension direction of the tube body; A partition structure is provided inside the pipe body, the partition structure separates the first flow channel interface and the second flow channel interface inside the pipe body, and the plurality of second flow channel interfaces are connected inside the pipe body.

42. The heat exchange element according to claim 41, wherein: The tube body is divided into a first space and a second space that are independent of each other by the 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.

43. The heat exchange element according to claim 42, wherein: 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.

44. The heat exchange element according to claim 25, wherein: 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 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 channel; The mounting member is configured to be sealed and connected to the battery box. A through hole is formed on the mounting member to connect the spaces on both sides of the mounting member. The first tube portion and / or the second tube portion passes through the through hole and is sealed and connected to the through hole.

45. The heat exchange element according to claim 44, wherein: The mounting member has a cavity with an opening on one side, and the mounting member includes a mounting plate arranged opposite to the opening of the cavity. The through hole passes through the mounting plate. 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.

46. A battery, wherein The heat exchange element comprises the heat exchange element according to any one of claims 1 to 45.

47. The battery according to claim 46, wherein Also includes: A battery assembly, the battery assembly comprising a battery unit, the battery unit comprising a plurality of battery cells stacked in sequence along a third direction; The heat exchange component is provided on one side of the battery assembly in the fourth direction and exchanges heat with the battery assembly; Wherein, the third direction and the fourth direction are arranged at an angle.

48. The battery according to claim 47, wherein The battery cells of the battery assembly located at the outermost periphery in the circumferential direction constitute peripheral battery cells, and at least a portion of the second heat exchange section is in contact with the peripheral battery cells.

49. The battery according to claim 48, wherein The battery assembly includes one battery unit, and all the battery cells of the battery unit together form the 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 the peripheral battery cell, and the third direction, the fourth direction and the fifth direction are arranged at angles to each other.

50. The battery according to claim 49, wherein 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 that are adjacently arranged, wherein the first group of battery cells includes a plurality of battery cells arranged in a stacked manner along the third direction, the second group of battery cells includes a plurality of battery cells arranged in a stacked manner along the fifth direction, and the third group of battery cells includes a plurality of battery cells arranged in a stacked manner along the fifth direction; The second heat exchange section includes a second heat exchange portion, a third heat exchange portion and a fourth heat exchange portion that are connected; The second heat exchange portion extends and fits to the first group of battery cells to enable heat exchange, and / or the third heat exchange portion extends and fits to the second group of battery cells to enable heat exchange, and / or the fourth heat exchange portion extends and fits to the third group of battery cells to enable heat exchange.

51. The battery according to claim 50, wherein 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 the third direction. The second heat exchange section also includes a fifth heat exchange part, and the fifth heat exchange part closes at least a portion of the opening of the U-shaped area formed by the second heat exchange part, the third heat exchange part and the fourth heat exchange part. The fifth heat exchange part extends and fits the fourth group of battery cells to enable heat exchange.

52. The battery according to claim 50, wherein The second heat exchange portion extends along a second direction, which is the same as the third direction; the third heat exchange portion and the fourth heat exchange portion extend along a first direction, which is the same as the fifth direction; And / or, the first heat exchange portion extends along the first direction, and the first direction and the fifth direction are the same direction.

53. The battery according to claim 52, wherein The battery assembly includes a plurality of battery cells arranged in sequence along a fifth direction, at least one of the battery cells located at both ends in the fifth direction is the first group of battery cells, The second heat exchange portion and at least one first heat exchange portion of the first heat exchange section are attached to the first group of battery cells to enable heat exchange.

54. The battery according to claim 53, wherein There are multiple first heat exchange parts, which are bent and connected in sequence in the first direction; The second heat exchange portion and the first heat exchange portion that is farthest away from the second heat exchange portion along a line connected in sequence to the second heat exchange portion exchange heat with the first group of battery cells.

55. The battery according to claim 50, wherein The second heat exchange section includes a second heat exchange portion, a third heat exchange portion, and a fourth heat exchange portion connected to each other. The first end of the third heat exchange portion is connected to the second heat exchange portion at an angle, and the second end of the third heat exchange portion is connected to the first heat exchange section at an angle. The second heat exchange portion extends and fits the first group of battery cells to enable heat exchange, the third heat exchange portion extends and fits the second group of battery cells to enable heat exchange, and the fourth heat exchange portion extends and fits the third group of battery cells to enable heat exchange; or The second heat exchange portion is attached to the second group of battery cells to enable heat exchange, and the third heat exchange portion is attached to the first group of battery cells to enable heat exchange.

56. The battery according to claim 50, wherein The first heat exchange channel further includes: a third heat exchange section, the third heat exchange section being connected to an end of the first heat exchange section away from the second heat exchange section and being connected to the first heat exchange section at an angle; The battery assembly further includes a fifth group of battery cells, wherein the fifth group of battery cells includes a plurality of battery cells stacked along a fifth direction, and the fifth group of battery cells is arranged adjacent to the third group of battery cells. Among them, 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.

57. The battery according to claim 52, wherein 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. One of the battery cells is attached to one of the second heat exchange parts and at least one of the first heat exchange parts to enable heat exchange; Alternatively, one of the battery cells is attached to at least two of the first heat exchange parts to enable heat exchange.

58. The battery according to claim 57, wherein 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.

59. The battery according to claim 57, wherein There are two first heat exchange channels, each of which includes three first heat exchange parts, one second heat exchange part, one third heat exchange part, one fourth heat exchange part, and one third heat exchange section. The number of the battery cells is four, and the battery cells at the end in the fifth direction are attached to a first heat exchange portion and a second heat exchange portion to enable heat exchange, and any remaining battery cells are attached to two first heat exchange portions to enable exchange, The third heat exchange part is connected to the second heat exchange part and the first heat exchange part which is 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 which is closest to the second heat exchange part. 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.

60. The battery according to claim 57, wherein There are two first heat exchange channels, each of which includes five first heat exchange parts, one second heat exchange part, one third heat exchange part, one fourth heat exchange part, and one third heat exchange section. The number of the battery cells is six, and the battery cells at the end in the fifth direction are connected to a first The heat exchange portion and the second heat exchange portion are attached to each other so as to be able to perform heat exchange, and any of the remaining battery cells are attached to the two first heat exchange portions so as to be able to perform heat exchange, The third heat exchange part is connected to the second heat exchange part and the first heat exchange part which is 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 which is closest to the second heat exchange part. 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.

61. The battery according to claim 57, wherein There are two first heat exchange channels, each of which includes five first heat exchange parts, one second heat exchange part, one third heat exchange part, one fourth heat exchange part, and one third heat exchange section. The number of the battery cells is four, the battery cells at the end portion in the fifth direction are attached to two first heat exchange portions and one second heat exchange portion to enable heat exchange, and any remaining battery cells are attached to three first heat exchange portions to enable heat exchange, The third heat exchange part is connected to the second heat exchange part and the first heat exchange part which is 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 which is closest to the second heat exchange part. 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.

62. The battery according to claim 46, wherein The battery includes a box body and a battery assembly, the box body includes a box body, the box body is an integral stamped part and includes a bottom wall and a surrounding wall, the battery assembly is arranged in the box 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.

63. The battery according to claim 62, wherein The thermal management system of the battery includes a temperature regulating element, wherein the temperature regulating element includes at least one of a first temperature regulating element and a second temperature regulating element. 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 member is disposed in the box body and is located between the peripheral wall of the battery cell and the box body; At least one of the first temperature regulating element and the second temperature regulating element forms the heat exchange element.

64. The battery according to claim 63, wherein The battery thermal management system 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.

65. The battery according to any one of claims 62-64, wherein The box body further comprises 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 further includes a foam member, at least a portion of which fills a gap formed by the bending of the heat exchange tube of the heat exchange member.

66. The battery according to claim 65, wherein The foam part includes a main body and a plurality of convex ribs, wherein the plurality of convex ribs are formed on one side surface of the main body in the thickness direction, and the plurality of convex ribs cooperate with the main body to define a receiving groove, and 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.

67. An electrical device, wherein: Comprising a battery according to any one of claims 46-66.

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