Heat exchanger, battery and electric device

Abstract

The application discloses a heat exchange element, a battery and an electric device. The heat exchange element comprises a first heat exchange flow channel, the first heat exchange flow channel comprises a first heat exchange section and a second heat exchange section; the second heat exchange section is bent to form a U-shaped region, the first heat exchange section is arranged in the U-shaped region and is bent to be connected with the second heat exchange section, wherein the U-shaped region is entirely attached to peripheral battery monomers to exchange heat with the peripheral battery monomers, and the first heat exchange section exchanges heat with corresponding battery monomers in the U-shaped region. According to the heat exchange element, the internal and external temperature differences caused by heat exchange between the peripheral battery monomers and the environment can be compensated, the heat exchange effect of the battery monomers around the battery assembly and the battery monomers in the battery assembly tends to be consistent, the temperature uniformity of the battery is improved, and the service life of the battery can be improved to a certain extent.

Description

[0001] This case is a divisional application of Chinese Patent Application No. 202410171636.6, filed on February 6, 2024, entitled "Heat Exchanger, Battery and Electrical Equipment". Technical Field

[0002] This application relates to the field of battery technology, and in particular to a heat exchanger, a battery, and an electrical device. Background Technology

[0003] In existing technologies, to ensure normal operation and lifespan of batteries, heat exchange components are typically installed inside the battery. These components exchange heat with individual battery cells to regulate the temperature of each cell, thereby ensuring battery life. However, currently, battery packs contain a large number of battery cells, and the temperature uniformity of each cell under the heat exchange effect of the heat exchange components needs further improvement.

[0004] Application content

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

[0006] In a first aspect, embodiments of this application provide a heat exchanger for a battery. The battery includes a battery assembly, which includes battery cells. Each battery cell includes a plurality of battery cells arranged in a sequentially stacked manner. The plurality of battery cells located on the outermost periphery of the battery assembly form an outer battery cell. The heat exchanger is adapted to be disposed on one side of the battery assembly and to exchange heat with the battery assembly. The heat exchanger 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 region. The first heat exchange section is bent and disposed within the U-shaped region and is bent and connected to the second heat exchange section. The U-shaped region is entirely in contact with the outer battery cells regardless of whether the number of the first heat exchange channels is one or more, so as to exchange heat with the outer battery cells. The first heat exchange section exchanges heat with the corresponding battery cells located within the U-shaped region.

[0007] In the above embodiment, since the battery cells arranged on the periphery are closer to the side wall of the casing than the battery cells in the interior, the battery cells on the periphery can dissipate heat more easily through the battery side wall or end plate and are less affected by the heat dissipation of adjacent battery cells. In contrast, the battery cells in the interior have more difficulty dissipating heat and are more affected by the heat dissipation of adjacent battery cells. As a result, the heat dissipation of battery cells in different positions is different, which leads to uneven temperature distribution between the peripheral and internal battery cells after the battery is in operation. This makes the battery less stable during operation and the battery performance is prone to degradation. In view of this, this application bends the second heat exchange section to form a U-shaped region, and the first heat exchange section is bent and disposed within the U-shaped region. When the heat exchange component of this embodiment exchanges heat with the battery assembly, regardless of whether the number of the first heat exchange channels is one or more, the U-shaped region formed by the bending of the second heat exchange section is completely in contact with the outer battery cell group. The first heat exchange section exchanges heat with the corresponding battery cell located within the U-shaped region. In this way, the heat exchange component can compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cell and the environment, so that the heat exchange effect of the battery cells outside the battery assembly and the battery cells inside the battery assembly tends to be consistent, improving the temperature uniformity of the battery, thereby improving the battery's service life to a certain extent.

[0008] In some embodiments, the second heat exchange section is located on the outermost side of the first heat exchange channel in the circumferential direction.

[0009] In the above embodiments, by setting the second heat exchange section to be located on the outermost side of the first heat exchange channel in the circumferential direction, the second heat exchange section can exchange heat on the outer circumferential direction of the battery module, which is beneficial to improving the temperature difference of the battery module in different environments and improving the service life of the battery module to a certain extent.

[0010] In some embodiments, the first heat exchange section and the second heat exchange section are bent in the same plane.

[0011] In the above embodiments, by setting the first heat exchange section and the second heat exchange section to be bent in the same plane, the first heat exchange channel can exchange heat with the battery in the same plane. This simplifies the structure of the first heat exchange channel, reduces the production difficulty of the first heat exchange channel, and also reduces the space occupied by the first heat exchange channel, thereby increasing the volumetric energy density of the battery.

[0012] In some embodiments, the first heat exchange section includes a plurality of first heat exchange parts, which are arranged at intervals and sequentially bent and connected.

[0013] In the above embodiments, on the one hand, by setting multiple first heat exchange sections, the heat exchange area of ​​the first heat exchange section can be increased, thereby increasing the heat exchange area of ​​the first heat exchange channel and 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 multiple first heat exchange sections, the overall heat exchange effect can be guaranteed while ensuring that the temperature difference between the internal and external battery cells is small.

[0014] In some embodiments, a plurality of first heat exchange sections are arranged at intervals along a first direction, and each first heat exchange section extends in a straight line along a second direction, with the first direction and the second direction forming an angle.

[0015] In the above embodiments, by setting the first heat exchange section to extend in a straight line along the second direction, the manufacturing difficulty of the first heat exchange section can be reduced, thereby reducing the manufacturing complexity of the first heat exchange channel and reducing production costs. At the same time, the straight pipe can also increase the flow velocity of the heat exchange fluid, thereby improving the heat exchange effect of the first heat exchange channel. In addition, the parallel arrangement of multiple first heat exchange sections can also save space, facilitate the miniaturization of the heat exchange component structure, and help ensure the volumetric energy density of the battery.

[0016] In some embodiments, the first heat exchange section further includes a first bend, which is arc-shaped and bends between two adjacent first heat exchange sections.

[0017] In the above embodiments, by providing a first bend, the fluid flow direction inside the first heat exchange section can be changed, achieving a smooth transition between the two first heat exchange sections and realizing the meandering extension of the first heat exchange channel. This increases the contact area between a single battery cell and the first heat exchange channel, thereby increasing the heat exchange area and improving the heat exchange efficiency of the first heat exchange channel. At the same time, the arc shape of the first bend can also reduce the fluid flow resistance and reduce the pressure drop, thereby increasing the fluid flow rate and further increasing the heat exchange efficiency of the first heat exchange section. In addition, the bending design makes the entire heat exchange component structure compact and reliable, adaptable to the battery cell arrangement, and improving the volumetric energy density of the battery cells.

[0018] In some embodiments, the second heat exchange section includes: a second heat exchange portion, a third heat exchange portion, and a fourth heat exchange portion. The second heat exchange portion extends along a first side periphery of the first heat exchange section. The third heat exchange portion is connected between the second heat exchange portion and the first heat exchange section and extends along a second side periphery of the first heat exchange section. A first end of the third heat exchange portion is connected to the second heat exchange portion at an angle, and a second end of the third heat exchange portion is connected to the first heat exchange section at an angle. The fourth heat exchange portion communicates with the second heat exchange portion, is connected to the second heat exchange portion at an angle, and extends along a third side periphery of the first heat exchange section.

[0019] In the above embodiments, by arranging the second heat exchange section, the third heat exchange section, and the fourth heat exchange section on three sides of the first heat exchange section, the second heat exchange section can surround the first heat exchange section, thereby increasing the compactness of the arrangement of the first heat exchange channel, realizing the miniaturization of the structure of the first heat exchange channel, which is beneficial to improving the volumetric 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 heat exchange components.

[0020] In some embodiments, the first heat exchange section includes a plurality of first heat exchange portions, which are sequentially bent and connected in a first direction; wherein, a second heat exchange portion is located on one side of the plurality of first heat exchange portions along the first direction, and a third heat exchange portion is located on one side of the plurality of first heat exchange portions along a second direction, the first and second directions being 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, and a second end of the third heat exchange portion is connected to the first heat exchange portion that is furthest from the second heat exchange portion along the first direction; a 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 the end of the second heat exchange portion furthest from the third heat exchange portion, and the other end of the fourth heat exchange portion extends along the first direction in a direction furthest from the second heat exchange portion; or.

[0021] The second heat exchange section is located on one side of the plurality of first heat exchange sections along the second direction, and the third heat exchange section is located on one side of the plurality of first heat exchange sections along the first direction. 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 plurality of 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 plurality of first heat exchange sections along the first direction. One end of the fourth heat exchange section is connected to the end of the second heat exchange section that is away from the third heat exchange section, and the other end of the fourth heat exchange section extends along the second direction in a direction away from the second heat exchange section.

[0022] In the above embodiments, by sequentially bending and connecting multiple first heat exchange sections in a first direction, with a second heat exchange section located on one side of the multiple first heat exchange sections along the first direction, a third heat exchange section located on one side of the multiple first heat exchange sections along a second direction, and a fourth heat exchange section located on the other side of the multiple first heat exchange sections along the second direction, the positional relationship between the second, third, and fourth heat exchange sections and the first heat exchange sections is defined, further defining the layout of the first heat exchange channel, simplifying the structure of the first heat exchange channel, and facilitating manufacturing. By setting the second heat exchange section to one side of the multiple first heat exchange sections along the second direction, the third heat exchange section to one side of the multiple first heat exchange sections along the first direction, and the fourth heat exchange section to the other side of the multiple first heat exchange sections along the first direction, another layout of the first heat exchange channel is defined. This increases the diversity of the first heat exchange channel, enabling it to meet the heat exchange requirements of different batteries, simplifying the structure of the first heat exchange channel, and facilitating manufacturing.

[0023] In some embodiments, the third heat exchange section and the fourth heat exchange section extend along a first direction, and the first heat exchange section and the second heat exchange section both extend along a second direction; or, the first heat exchange section, the third heat exchange section and the fourth heat exchange section all extend along a second direction, and the second heat exchange section extends along a first direction.

[0024] In the above embodiments, by setting the third heat exchange section and the fourth heat exchange section to extend along the first direction, and the first heat exchange section and the second heat exchange section to extend along the second direction, it is beneficial to arrange the first heat exchange channel in a roundabout way, thereby reducing the production difficulty of the first heat exchange channel and reducing the production cost of the heat exchange component.

[0025] By setting the first, third, and fourth heat exchange sections to extend along the second direction, and the second heat exchange section to extend along the first direction, it is beneficial to arrange the first heat exchange channel in a roundabout manner, thereby reducing the production difficulty of the first heat exchange channel and the production cost of the heat exchange components; at the same time, this arrangement also makes the structure of the first heat exchange channel more compact and reliable.

[0026] In some embodiments, both the third heat exchange section and the fourth heat exchange section extend along a 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 a second direction, and the second heat exchange section extends along the first direction, and in the second direction, the length of the third heat exchange section is greater than or equal to the length of the first heat exchange section.

[0027] In the above embodiments, by setting the length of the fourth heat exchange section to be equal to the length of the third heat exchange section in the first direction, the dimensions of the two ends of the U-shaped region can be made close, which is beneficial to controlling the temperature difference of the battery cells at both ends of the battery module in the second direction and improving the temperature uniformity of the battery module. By setting the length of the fourth heat exchange section to be less than the length of the third heat exchange section in the first direction, it is convenient for the fourth heat exchange section to be connected to the current collector, and the fourth heat exchange section can also avoid other flow channel sections, other flow channel structures or other components of the first heat exchange flow channel.

[0028] In the above embodiments, by setting the length of the third heat exchange section to be greater than the length of the first heat exchange section in the second direction, the first heat exchange section can be covered within the U-shaped area of ​​the second heat exchange section. Increasing the length of the third heat exchange section increases its heat exchange area, allowing the second heat exchange section to enclose a larger U-shaped area and improving the heat exchange effect of the heat exchange component. By setting the length of the third heat exchange section to be equal to the length of the first heat exchange section, the length of the third heat exchange section extending along the second direction of the first heat exchange channel is close to that of the multiple first heat exchange sections. This is beneficial for controlling the temperature difference of the battery assembly along the first direction and improving the temperature uniformity of the battery assembly.

[0029] In some embodiments, the fourth heat exchange section extends along a first direction and extends to a position close to the one of the plurality of first heat exchange sections that is furthest from the second heat exchange section.

[0030] In the above embodiments, by setting a fourth heat exchange section that extends along the first direction and extends to a position close to the one of the plurality of first heat exchange sections that is furthest from the second heat exchange section, the heat exchange area of ​​the fourth heat exchange section can be increased, so that the first heat exchange channel can exchange heat with the plurality of battery cells arranged corresponding to the first heat exchange channel as much as possible, thereby improving the heat exchange comprehensiveness of the first heat exchange channel and thus improving the heat exchange effect of the battery.

[0031] In some embodiments, the second heat exchange section further includes a second bend and a third bend, both of which are arc-shaped, with the second bend connecting the first end of the third heat exchange section to the second heat exchange section, and the third bend connecting the second end of the third heat exchange section to the first heat exchange section.

[0032] In the above embodiments, by providing the second and third bends, the flow direction of the fluid within the first heat exchange channel can be changed, achieving a smooth transition between the third and second heat exchange sections, and between the third and first heat exchange sections. Therefore, the second and third bends can reduce the flow resistance of the fluid within 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, which increases the heat exchange area and makes the structure more compact, facilitating the miniaturization of the battery and ensuring its volumetric energy density.

[0033] In some embodiments, the second heat exchange section further includes a fifth heat exchange portion, which extends along the fourth side periphery of the first heat exchange section and closes at least a portion of the opening of the U-shaped region formed by the second heat exchange portion, the third heat exchange portion and the fourth heat exchange portion.

[0034] In the above embodiment, by providing a fifth heat exchange section, the second heat exchange section can exchange heat on the four sides of the battery module. In this way, the second heat exchange section of a first heat exchange channel can exchange heat on the four sides of the battery module, thereby improving the heat exchange effect on the four sides of the battery module and enhancing the temperature uniformity of the battery module.

[0035] In some embodiments, the fifth heat exchange section is arranged opposite to the second heat exchange section, the fifth heat exchange section is connected between the second end of the third heat exchange section and the first heat exchange section, and is connected at an angle to the third heat exchange section and at an angle to the first heat exchange section; or, one end of the fifth heat exchange section is connected to the end of the fourth heat exchange section away from the second heat exchange section, and the fifth heat exchange section is connected at an angle to the fourth heat exchange section.

[0036] In the above embodiments, by arranging the fifth heat exchange section opposite to the second heat exchange section and connecting the fifth heat exchange section between the third heat exchange section and the first heat exchange segment or between the fourth heat exchange section and the first heat exchange segment, the structure of the first heat exchange channel can be further optimized according to the heat exchange requirements of the battery assembly.

[0037] In some embodiments, the first heat exchange channel further includes a third heat exchange section, wherein 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.

[0038] In the above embodiments, by setting a 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.

[0039] In some embodiments, the first heat exchange section includes a plurality of first heat exchange parts, which are sequentially bent and connected in a 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 plurality of first heat exchange parts that is closest to the second heat exchange part in the first direction.

[0040] In the above embodiments, by adding a third heat exchange section and connecting the third heat exchange section to the one of the plurality of first heat exchange sections that is closest to the second heat exchange section along the first direction, the heat exchange area can be increased, the temperature difference of the battery module can be balanced, and the temperature uniformity of the battery module can be improved.

[0041] In some embodiments, the third heat exchange section extends along a first direction toward a direction away from the second heat exchange section, and the first heat exchange section extends along a second direction, wherein the first direction and the second direction are arranged at an angle.

[0042] In the above embodiments, by setting the third heat exchange section to extend along the first direction away from the second heat exchange section, the heat exchange area of ​​the first heat exchange channel can be increased, thereby improving the heat exchange effect of the first heat exchange channel on the battery cell. At the same time, when the third heat exchange section and the fourth heat exchange section exchange heat with the battery module together, the temperature difference at the edge of the battery module can be balanced, thereby improving the temperature uniformity at the edge of the battery module.

[0043] In some embodiments, the third heat exchange section extends along a first direction to a position close to the one of the plurality of first heat exchange sections that is furthest from the second heat exchange section.

[0044] In the above embodiment, by setting the third heat exchange section to extend along the first direction to a position close to the one of the plurality of first heat exchange sections that is furthest from the second heat exchange section, the length of the third heat exchange section can be increased, the heat exchange area of ​​the third heat exchange section can be increased, and the heat exchange effect of the first heat exchange channel can be improved.

[0045] In some embodiments, the first heat exchange channel further includes a fourth bend, which is arc-shaped and bends between the third heat exchange section and the first heat exchange section.

[0046] In the above embodiments, by providing a fourth bend, the flow direction of the fluid between the third heat exchange section and the first heat exchange section can be changed. Simultaneously, the arc-shaped fourth bend can reduce fluid flow resistance, decrease pressure drop, and increase fluid flow rate, further increasing the heat exchange efficiency of the first heat exchange channel. Furthermore, by providing the fourth bend, a circuitous arrangement of the first heat exchange channel can be achieved, thereby increasing the heat exchange area and making the structure more compact, which is more conducive to achieving battery miniaturization design and improving the battery's volumetric energy density.

[0047] In some embodiments, the first heat exchange channel further includes: a first inlet / outlet section, one end of which is connected at an angle to the third heat exchange section, and the other end of which forms the first inlet / outlet of the first heat exchange channel.

[0048] In the above embodiments, by setting a first inlet / outlet section, the external pipeline can be conveniently connected, allowing the heat exchange medium to enter or exit the first heat exchange channel. At the same time, it can also guide the heat exchange fluid entering or exiting the first heat exchange channel, allowing the heat exchange fluid to enter or exit quickly, thereby improving the heat exchange rate.

[0049] In some embodiments, the first inlet / outlet section extends along the second direction in a direction away from the first heat exchange section, and the third heat exchange section extends along the first direction, with the first direction and the second direction forming an angle.

[0050] In the above embodiments, by setting the first inlet and outlet section to extend away from the first heat exchange section along the second direction, the pipe layout of the first heat exchange channel can be made more reasonable and it is easier to connect with external pipes; at the same time, it can also keep the first inlet and outlet away from the battery assembly, which helps to reduce the occurrence of damage to the battery assembly due to water leakage from the first inlet and outlet.

[0051] In some embodiments, the first heat exchange channel further includes a fifth bend, which is arc-shaped and bends between the third heat exchange section and the first inlet / outlet section.

[0052] In the above embodiments, by providing a fifth bend, the heat exchange fluid can flow smoothly from the third heat exchange section to the first inlet / outlet section or from the first inlet / outlet section to the third heat exchange section, realizing liquid inlet or outlet of the first inlet / outlet section; at the same time, the arc shape of the fifth bend can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel.

[0053] In some embodiments, the first heat exchange channel further includes: a second inlet / outlet section, one end of which is connected to the fourth heat exchange section at an angle, and the other end of which forms a second inlet / outlet of the first heat exchange channel; and the second inlet / outlet section extends along a second direction away from the first heat exchange section, and the fourth heat exchange section extends along a first direction, with the first direction and the second direction forming an angle.

[0054] In the above embodiments, by setting a second inlet / outlet section, the external pipeline can be facilitated, allowing the heat exchange medium to enter or exit the first heat exchange channel to complete the heat exchange of the battery cells. At the same time, it can also guide the heat exchange fluid entering or exiting the first heat exchange channel, allowing the heat exchange fluid to enter or exit quickly, thereby improving the heat exchange rate.

[0055] In some embodiments, the first heat exchange section is connected downstream of the second heat exchange section along the fluid flow direction; or, the heat exchanger is configured such that: when heating the battery assembly of the battery, the first heat exchange section is connected downstream of the second heat exchange section along the fluid flow direction; and when cooling the battery assembly of the battery, the first heat exchange section is connected upstream of the second heat exchange section along the fluid flow direction.

[0056] In the above embodiments, 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 on the outer circumferential side of the battery, thereby improving the temperature difference of the battery in different environments and increasing the battery's lifespan to a certain extent. By configuring the heat exchange components such that when heating the battery assembly, the first heat exchange section is connected downstream of the second heat exchange section along the fluid flow direction; and when cooling the battery assembly, 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, enhancing the temperature uniformity of the battery assembly.

[0057] In some embodiments, the heat exchanger has one or more heat exchange channels. When there are multiple heat exchange channels, the multiple heat exchange channels are arranged at intervals along a first direction or arranged around each other. At least one heat exchange channel is formed as a first heat exchange channel, and the multiple heat exchange channels are arranged in parallel.

[0058] In the above embodiments, by setting the heat exchanger to have one or more heat exchange channels, and the multiple heat exchange channels are arranged at intervals or around each other along the first direction, the diversity of heat exchange channels can be increased, thereby improving the adaptability of the heat exchanger and enabling it to meet different battery requirements, thereby improving the market competitiveness of the battery; at the same time, the parallel arrangement of multiple heat exchange channels can enable multiple heat exchange channels to exchange heat simultaneously, thereby reducing the heat exchange time of the heat exchanger and improving the heat exchange efficiency.

[0059] In some embodiments, a plurality of heat exchange channels are arranged at intervals along a first direction, and the two heat exchange channels located at both ends of the first direction are both first heat exchange channels; and the two first heat exchange channels are arranged symmetrically about the center line of the heat exchange element along a second direction, wherein the second direction is set at an angle to the first direction.

[0060] In the above embodiments, by setting two symmetrically arranged first heat exchange channels, liquid can be fed into both sides simultaneously, increasing the liquid flow rate, shortening the length of a single heat exchange channel, reducing the pressure drop in a single heat exchange channel, and thus improving the heat exchange efficiency.

[0061] In some embodiments, a plurality of heat exchange channels are arranged symmetrically about the centerline of the heat exchanger along a second direction.

[0062] In the above embodiments, by setting multiple heat exchange channels symmetrically arranged about the centerline of the heat exchange component along the second direction, the multiple heat exchange channels can exchange heat with the battery module simultaneously, improving heat exchange efficiency. At the same time, it can also improve the temperature consistency of the two heat exchange areas of the symmetrically arranged battery module and heat exchange component, thereby further improving the temperature uniformity of the battery module.

[0063] In some embodiments, the plurality of heat exchange channels further includes at least one second heat exchange channel disposed 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 embodiments, by providing at least one second heat exchange channel, the diversity of heat exchange channel arrangement can be increased, enabling the heat exchange component to better exchange heat with the battery assembly and improving the heat exchange effect of the heat exchange component.

[0065] In some embodiments, the second heat exchange channel includes a plurality of fourth heat exchange sections connected in sequence, wherein the fourth heat exchange sections extend along a second direction, and the plurality of fourth heat exchange sections are arranged at intervals in a first direction, with the first direction and the second direction forming an angle.

[0066] In the above embodiments, by setting the second heat exchange channel to include a plurality of sequentially connected fourth heat exchange sections, 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 components.

[0067] In some embodiments, the heat exchanger has a plurality of heat exchange channels, including a first heat exchange channel and at least one third heat exchange channel. The third heat exchange channel is bent within the U-shaped region of the first heat exchange channel, and the first and third heat exchange channels are bent in the same plane. The bending structures of the first and third heat exchange channels may be the same or different.

[0068] In the above embodiments, by setting multiple heat exchange channels, the diversity of heat exchange channels can be increased, and the arrangement of 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 components and improving the temperature uniformity of the battery.

[0069] In some embodiments, the third heat exchange channel includes a U-shaped region with the same structure as the first heat exchange channel, and at least a portion of the first heat exchange section of the first heat exchange channel is disposed within the U-shaped region of the third heat exchange channel.

[0070] In the above embodiments, by setting a third heat exchange channel including 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 being located within the U-shaped region of the third heat exchange channel, the first heat exchange channel and at least a portion of the third heat exchange channel can be arranged around each other. In this way, the arrangement of the heat exchange channels can be arranged according to the heat exchange requirements of each part of the battery assembly, further increasing the heat exchange effect of the heat exchange components and improving the temperature uniformity of the battery.

[0071] In some embodiments, the U-shaped region of the first heat exchange channel is located on the outermost circumferential side of the heat exchanger.

[0072] In the above embodiments, by setting the U-shaped region of the second heat exchange section of the first heat exchange channel to be located on the outermost circumferential direction of the heat exchange element, the second heat exchange section can exchange heat on the outer circumferential direction of the battery, which is beneficial to improving the temperature difference of the battery in different environments and improving the battery's service life to a certain extent.

[0073] In some embodiments, the heat exchanger includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along a first direction, and the inner side of each heat exchange tube defines a heat exchange flow channel.

[0074] In the above embodiments, by including at least one heat exchange tube in the heat exchange component, not only can the manufacturing complexity of the heat exchange component be reduced, thereby increasing the production rate of the heat exchange component, but the fluid pressure drop within a single heat exchange tube can also be reduced, thus improving heat exchange efficiency. Furthermore, tubular structures are simpler, lower in cost, and easier to process than plate structures.

[0075] In some embodiments, the heat exchange tube is formed by bending a single tube; optionally, the heat exchange tube is bent in an arc at the bending position.

[0076] In the above embodiments, by forming the heat exchange tube from a single bent tube, the number of weld points in the heat exchange component can be reduced, thereby reducing the risk of leakage and improving the reliability of the heat exchange component. Furthermore, the single-tube bending process is simpler to operate and requires less material compared to the manufacturing process of plate structures, significantly reducing the cost of the heat exchange component. By setting the heat exchange tube to an arc-shaped bend at the bending point, the flow resistance of the fluid can be reduced, the pressure drop can be decreased, and the flow rate of the heat exchange fluid in the heat exchange channel can be increased, thus increasing the heat exchange efficiency of the heat exchange component.

[0077] In some embodiments, the heat exchange tube is bent in an arc at the bend position, and the ratio of the bend 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 bend 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 bend position is greater than or equal to 0.2 mm.

[0078] In the above embodiments, by setting the ratio of the bending radius *r* along the centerline of the heat exchange tube to the width *d* of the heat exchange tube to be greater than or equal to 0.6, the heat exchange tube is less prone to breakage during bending and stretching, thereby reducing the probability of damage during bending, improving the structural strength of the heat exchange tube at the bending point, and enhancing the sealing performance at the bending point. By setting the ratio of the bending radius to the width of the heat exchange tube to be greater than or equal to 0.8, the probability of damage during bending can be further reduced, further improving the structural strength of the heat exchange tube at the bending point and enhancing the sealing performance at the bending point. By setting the wall thickness of the heat exchange tube at the bending point to be greater than or equal to 0.2 mm, the wall thickness at the bending point is prevented from being too thin, ensuring the strength of the heat exchange tube at the bending point and effectively reducing the risk of leakage at the bending point, thus improving the reliability of the heat exchange tube.

[0079] In some embodiments, at the bend of the heat exchange tube, the bend thinning rate of the heat exchange tube wall is less than or equal to 50%; alternatively, the bend thinning rate of the heat exchange tube is less than or equal to 30%.

[0080] In the above embodiments, by setting the bending thinning rate of the heat exchange tube to be less than or equal to 50%, the wall thickness loss of the heat exchange tube can be kept within a preset range. This ensures that the wall thickness of the heat exchange tube at the bending position is not too thin, which helps to guarantee the strength of the heat exchange tube at the bending position and effectively reduces the risk of leakage at the bending position, thereby improving the reliability of the heat exchange tube. By setting the bending thinning rate of the heat exchange tube to be less than or equal to 30%, the wall thickness loss after bending can be further reduced, and the strength of the heat exchange tube at the bending position can be further improved.

[0081] In some embodiments, the wall thickness of the heat exchange tube is 0.2mm-3mm; optionally, the wall thickness of the heat exchange tube is 0.5mm-1.2mm.

[0082] In the above embodiments, by setting the wall thickness of the heat exchange tube to 0.2mm-3mm, the heat exchange tube has a suitable thickness, ensuring that the wall thickness is not too small, thus guaranteeing the strength of the heat exchange tube and effectively reducing the risk of damage. It also ensures that the wall thickness is not too large, which helps reduce the overall weight of the heat exchange tube, thereby reducing the overall weight of the battery and achieving battery lightweighting. By setting the wall thickness of the heat exchange tube to 0.5mm-1.2mm, the strength of the heat exchange tube can be guaranteed while reducing its overall weight, achieving battery lightweighting.

[0083] In some embodiments, the heat exchanger includes a heat exchange plate, and the heat exchange channels are formed on the heat exchange plate by stamping.

[0084] In the above embodiments, by setting heat exchange channels and forming them on the heat exchange plate by stamping, the process steps of the heat exchange components can be reduced, thereby increasing the production rate of the heat exchange components; at the same time, the heat exchange area of ​​the stamped heat exchange plate is large, which can ensure heat exchange efficiency.

[0085] In some embodiments, the width of the heat exchange channel is 3mm-200mm; optionally, the width of the heat exchange channel is 5mm-80mm; further optionally, the height of the heat exchange channel in the third direction is 1mm-20mm; even more optionally, the height of the heat exchange channel in the third direction is 4mm-6mm.

[0086] In the above embodiments, by setting the width of the heat exchange channel to 3mm-200mm, the width of the heat exchange channel is not too large, which is beneficial for the layout of the heat exchange channel and can meet the heat exchange effect required by the heat exchange component. It also prevents the width of the heat exchange channel from being too small, thus reducing the number of first heat exchange sections and consequently reducing the overall cost of the heat exchange component. Setting the width of the heat exchange channel to 5mm-80mm is also beneficial for the layout of the heat exchange channel and can meet the heat exchange effect required by the heat exchange component. It also reduces the number of first heat exchange sections and consequently reduces 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 is not too small, thus ensuring the flow rate of the heat exchange fluid within the heat exchange component and ensuring the heat exchange effect. It also prevents the height of the heat exchange component from being too large, which helps to reduce the space occupied by the heat exchange component and achieve battery miniaturization. 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, while reducing the space occupied by the heat exchange component, thus realizing the miniaturization of the battery.

[0087] In some embodiments, the number of heat exchange channels is 2 to 4.

[0088] In the above embodiments, 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 frictional resistance of the heat exchange channel, reducing the pressure drop, and thus improving the heat exchange efficiency of the heat exchanger.

[0089] In some embodiments, the heat exchanger further includes a collector, which includes: a tube body; a plurality of first flow channel interfaces, each of which corresponds to and is connected to a first inlet and outlet of a plurality of heat exchange channels; a plurality of second flow channel interfaces, each of which corresponds to and is connected to a second inlet and outlet of a plurality of heat exchange channels, and at least two second flow channel interfaces are located on opposite sides of the plurality of first flow channel interfaces along the extension direction of the tube body; and a partition structure disposed inside the tube body, which separates the first flow channel interfaces and the second flow channel interfaces inside the tube body, and the plurality of second flow channel interfaces are connected inside the tube body.

[0090] In the above embodiments, by setting a collector and using a partition structure to separate multiple first flow channel interfaces and multiple second flow channel interfaces, and with the multiple second flow channel interfaces connected within the tube body, the first and second flow channel interfaces can respectively form the input and output ends of the heat exchange flow channels. This allows a single tube body to complete both liquid inlet and outlet operations, reducing the number of collector pipes used and also reducing the use of external connecting pipes. This reduces the production cost and space required for the heat exchange management components, as well as the assembly steps and installation space. Furthermore, the presence of multiple second flow channel interfaces, with at least two located on either side of the first flow channel interface, allows the heat exchange fluid to flow from the periphery of the battery towards the central region for heat exchange, or from the central region of the battery towards the periphery for heat exchange. This improves the battery's temperature uniformity and extends its lifespan.

[0091] In some embodiments, the tube body is divided into a first space and a second space 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 segment, a second segment, and a third segment that are connected in sequence. The first segment and the third segment are located on both sides of the first space, and the second segment is parallel to the first space.

[0092] In the above embodiments, by setting the first space and the second space to be independent of each other and not connected, two independent flow channels can be formed inside the tube body, so that the inlet and outlet of the heat exchange fluid do not interfere with each other. At the same time, the first space and the second space are arranged side by side, which can reduce the size of the tube body and thus reduce the space ratio of the manifold.

[0093] In some embodiments, the partition structure includes a first partition plate and a second partition plate. The first partition plate is used to separate a second segment and a first space. The second partition plate includes at least two partition plates 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 segment and the first space, as well as the third segment and the first space.

[0094] In the above embodiments, by setting a first partition plate and a 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] In some embodiments, the heat exchanger further includes: a first tube portion, the inlet end of which forms a first inlet / outlet of a heat exchange channel; a second tube portion, the outlet end of which forms a second inlet / outlet of a heat exchange channel; and a mounting member configured to be sealed to the battery housing, the mounting member having a through hole communicating with the spaces on both sides of the mounting member, the first tube portion and / or the second tube portion passing through the through hole and being sealed to the through hole.

[0096] In the above embodiments, by setting the mounting component, it is no longer necessary to separately seal the first and second tubes to the casing when assembling the battery. This reduces the labor and materials required for battery assembly, thereby increasing the battery production rate and reducing the labor cost of battery production.

[0097] In some embodiments, the mounting member has a cavity with an opening on one side, a through hole penetrating the bottom wall of the cavity opposite to the opening, the mounting member is adapted to be disposed between the box body and the bottom guard plate of the box, and the outer peripheral surface of the mounting member is adapted to be sealed to the box body and the bottom guard plate.

[0098] In the above embodiments, by setting the mounting component as a cavity with an opening on one side, the overall weight of the mounting component can be reduced, thereby reducing the overall weight of the entire battery and achieving battery weight reduction. At the same time, the mounting component is suitable for being set between the main body of the housing and the bottom protective plate. In this way, the bottom of the housing can isolate the heat exchange component and multiple battery cells. Therefore, when the heat exchange component is damaged, it will not affect multiple battery cells, thereby reducing the cost of battery maintenance.

[0099] Secondly, embodiments of this application provide a battery comprising: a heat exchanger according to the first aspect of this application; a battery assembly including battery cells, each battery cell including a plurality of battery cells arranged in sequence along a third direction; the heat exchanger being disposed on one side of the battery assembly in a fourth direction and exchanging heat with the battery assembly; wherein the third direction and the fourth direction are arranged at an angle; the plurality of battery cells located on the outermost periphery of the battery assembly form an outer battery cell, and the second heat exchange section is entirely in contact with the outer battery cells.

[0100] In the above embodiments, by setting the heat exchange component of the first aspect, the second heat exchange section of the heat exchange component is bent to form a U-shaped region, and the first heat exchange section is bent and disposed within the U-shaped region. Regardless of whether the number of the first heat exchange channels is one or more, the U-shaped region formed by the bending of the second heat exchange section is completely in contact with the outer battery cell group. The first heat exchange section exchanges heat with the corresponding battery cell located within the U-shaped region. In this way, the heat exchange component can compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cell and the environment, so that the heat exchange effect of the outer battery cell and the battery cell inside the battery module tends to be consistent, improving the temperature uniformity of the battery. This can improve the battery's service life to a certain extent, thereby improving the overall performance of the battery.

[0101] In some embodiments, the battery assembly includes a battery cell, and all the individual cells of the battery cell together form an outer battery cell; or, the battery assembly includes multiple battery cells, which are arranged sequentially along a fifth direction, and the multiple individual cells of the multiple battery cells located at the outermost edge of the battery assembly together form an outer battery cell, with the third direction, the fourth direction and the fifth direction arranged at angles to each other.

[0102] In the above embodiments, when the battery assembly includes a battery cell, all the individual cells of the battery cell together form an outer battery cell. In this case, the entire second heat exchange section and the first heat exchange section exchange heat with the outer battery cell. Therefore, the specific structure and layout of the second heat exchange section and the first heat exchange section are not limited, thereby reducing the layout complexity of the first heat exchange channel. By setting multiple battery cells located at the outermost edge of the battery assembly to form an outer battery cell, the heat exchange position of the second heat exchange section can be defined, which is beneficial to the layout of the heat exchange channel.

[0103] In some embodiments, the peripheral battery cell group includes a first group of battery cells, a second group of battery cells, and a third group of battery cells arranged adjacent to each other. The first group of battery cells includes a plurality of battery cells stacked along a third direction, the second group of battery cells includes a plurality of battery cells stacked along a fifth direction, and the third group of battery cells includes a plurality of battery cells stacked along a fifth direction. The second heat exchange section includes a second heat exchange portion, a third heat exchange portion, and a fourth heat exchange portion connected together. The second heat exchange portion extends and adheres to the first group of battery cells to enable heat exchange, and / or the third heat exchange portion extends and adheres to the second group of battery cells to enable heat exchange, and / or the fourth heat exchange portion extends and adheres to the third group of battery cells to enable heat exchange.

[0104] In the above embodiments, 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 groups are arranged at the outermost edge of the battery assembly, are closest to the battery housing, have more heat exchange with the environment, and have a lower temperature than battery cells in other positions. Therefore, by setting at least one of the second, third, and fourth heat exchange parts to be in close contact with the peripheral battery cells for heat exchange, the heat exchange components can stably and reliably cool or heat the peripheral battery cell groups, so that the battery assembly can have a good heat exchange effect, the temperature distribution inside the battery assembly is more uniform, and thus the battery operation is more stable.

[0105] In some embodiments, the peripheral battery cell further includes a fourth group of battery cells, the fourth group of battery cells including a plurality of battery cells arranged along a third direction, the second heat exchange section further includes a fifth heat exchange section, the fifth heat exchange section closes at least a portion of the opening of the U-shaped region formed by the second heat exchange section, the third heat exchange section and the fourth heat exchange section, the fifth heat exchange section extends and fits against the fourth group of battery cells to enable heat exchange.

[0106] In the above embodiment, the fifth heat exchange section is set in the second heat exchange section and is attached to the fourth group of battery cells. This allows the heat exchange components to better match the heat dissipation of the battery cells at different positions in the battery to arrange the heat exchange channels, so that the heat exchange components can better heat the battery assembly. This makes the internal temperature distribution of the battery more uniform during operation, and thus makes the battery operation more stable.

[0107] In some embodiments, the second heat exchange section extends along a second direction, which is the same as the third direction; the third heat exchange section and the fourth heat exchange section extend along a first direction, which is the same as the fifth direction; and / or, the first heat exchange section includes a plurality of first heat exchange sections, which extend along a first direction, which is the same as the fifth direction.

[0108] In the above embodiments, since the battery cell includes multiple battery cells stacked sequentially along a third direction and arranged sequentially along a fifth direction, by setting a second heat exchange section extending along a second direction (which is the same as the third direction), and a third and fourth heat exchange section extending along a first direction (which is the same as the fifth direction), the second heat exchange section can extend along the stacking direction of the multiple battery cells, and the third and fourth heat exchange sections can extend along the arrangement direction of the multiple battery cells. This allows the extension directions of the second, third, and fourth heat exchange sections to be designed according to the arrangement of the battery cells. Therefore, the arrangement of the first heat exchange channel can better meet the heat exchange requirements of the battery module and improve heat exchange efficiency.

[0109] In the above embodiments, by setting the first heat exchange section to extend along the first direction, and the first direction and the fifth direction being the same direction, the first heat exchange section can extend along the arrangement direction of the multiple battery cells, thereby the first heat exchange section can exchange heat with the multiple battery cells of the multiple battery cells. When the multiple battery cells are arranged sequentially along the thickness direction of the battery cells, the first heat exchange section can achieve heat exchange with the multiple battery cells. When the multiple battery cells are arranged sequentially along the length direction of the battery cells, the heat exchange area between the first heat exchange section and the battery cells increases, thereby increasing the heat exchange effect of the battery cells.

[0110] In some embodiments, the battery assembly includes a plurality of battery cells arranged sequentially along a fifth direction, at least one battery cell located at both ends of the fifth direction is a first group of battery cells, a second heat exchange section, and at least one first heat exchange section of the first heat exchange section are in contact with the first group of battery cells to enable heat exchange.

[0111] In the above embodiments, by setting the second heat exchange section and at least one first heat exchange section of the first heat exchange section to be in contact with the first group of battery cells for heat exchange, 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.

[0112] In some embodiments, there are multiple first heat exchange sections, which are sequentially bent and connected in a first direction; the second heat exchange section and the first heat exchange section that is furthest away from the second heat exchange section along the line that is sequentially connected to it exchange heat with the first group of battery cells.

[0113] In the above embodiment, by setting a second heat exchange section and a first heat exchange section that is furthest away from the second heat exchange section along a sequentially connected line to exchange heat with the first group of battery cells, the second heat exchange section and the adjacent first heat exchange section exchange heat with the first group of battery cells. This allows the second heat exchange section to exchange heat with the edge of the first group of battery cells, and the first heat exchange section to exchange heat with the other side of the first group of battery cells. The temperature difference between the heat exchange fluid in the second heat exchange section and the fluid in the first heat exchange section is large, and the heat exchange temperature of the first group of battery cells is approximately the average temperature of the second heat exchange section and the adjacent first heat exchange section. This balances the temperature difference of the first group of battery cells and improves the temperature uniformity of the first group of battery cells.

[0114] In some embodiments, the second heat exchange section includes a second heat exchange portion, a third heat exchange portion, and a fourth heat exchange portion connected together. 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 adheres to the first group of battery cells to enable heat exchange, the third heat exchange portion extends and adheres to the second group of battery cells to enable heat exchange, and the fourth heat exchange portion extends and adheres to the third group of battery cells to enable heat exchange; or the second heat exchange portion adheres to the second group of battery cells to enable heat exchange, and the third heat exchange portion adheres to the first group of battery cells to enable heat exchange.

[0115] In the above embodiments, by providing a second heat exchange section extending and adhering to the first group of battery cells for heat exchange, a third heat exchange section extending and adhering to the second group of battery cells for heat exchange, and a fourth heat exchange section extending and adhering to the third group of battery cells for heat exchange, heat exchange can be achieved between the second heat exchange section and the periphery of the battery assembly, thereby balancing the temperature difference caused by heat dissipation in the battery assembly. By providing the second heat exchange section to adhere to the second group of battery cells for heat exchange, and the third heat exchange section to adhere to the first group of battery cells for heat exchange, the heat exchange components can be designed with heat exchange channels according to the arrangement of multiple battery cells. This improves the applicability of the heat exchange components, enabling them to meet the cooling requirements of different batteries and increasing the heat exchange efficiency and temperature uniformity of the batteries.

[0116] In some embodiments, the first heat exchange channel further includes: a third heat exchange section, which is connected to the end of the first heat exchange section away from the second heat exchange section and is connected at an angle to the first heat exchange section; the battery assembly also has a fifth group of battery cells, the fifth group of battery cells including a plurality of battery cells stacked along a fifth direction, and the fifth group of battery cells being arranged adjacent to the third group of battery cells, wherein the third heat exchange section and the fourth heat exchange section are both in contact with the third group of battery cells to enable heat exchange; or, the third heat exchange section is in contact with the fifth group of battery cells to enable heat exchange, and the fourth heat exchange section is in contact with the third group of battery cells to enable heat exchange; or, the third heat exchange section is in contact with the third group of battery cells to enable heat exchange, and the fourth heat exchange section is arranged on the outer side of the battery assembly in a third direction.

[0117] In the above embodiments, by setting both the third heat exchange section and the fourth heat exchange part to be in 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 contact with the third group of battery cells for heat exchange, and arranging the fourth heat exchange part on the outer side of the battery module in the third direction, the heat exchange process can be simplified and the production difficulty of the heat exchange components can be reduced.

[0118] In some embodiments, the first heat exchange portion of the first heat exchange section and the second heat exchange portion of the second heat exchange section both extend along the second direction and are spaced apart in the first direction. A battery cell is attached to a second heat exchange portion and at least one first heat exchange portion to enable heat exchange; or, a battery cell is attached to at least two first heat exchange portions to enable heat exchange.

[0119] In the above embodiments, by attaching a battery cell to a second heat exchanger and at least one first heat exchanger to enable heat exchange, or by attaching a battery cell to at least two first heat exchangers to enable heat exchange, a battery cell can exchange heat with at least two heat exchangers, thereby increasing the heat exchange area and thus increasing the heat exchange effect.

[0120] In some embodiments, the total number of the first heat exchange section and the second heat exchange section of the first heat exchange channel is greater than or equal to 4.

[0121] In the above embodiments, by setting the total number of the first heat exchange section and the second heat exchange section 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.

[0122] In some embodiments, there are two first heat exchange channels, each first heat exchange channel including: three first heat exchange sections, one second heat exchange section, one third heat exchange section, one fourth heat exchange section, and one third heat exchange segment. There are four battery cells. The battery cell located at the end in the fifth direction is attached to one first heat exchange section and one second heat exchange section to exchange heat. Any of the remaining battery cells is attached to two first heat exchange sections to exchange heat. The third heat exchange section connects the second heat exchange section and the first heat exchange section farthest from the second heat exchange section, and is attached to the second group of battery cells to exchange heat. The third heat exchange segment connects to the first heat exchange section closest to the second heat exchange section. The third heat exchange segment and / or the fourth heat exchange section are attached to the third group of battery cells to exchange heat.

[0123] In the above embodiment, by setting four battery cells to match two first heat exchange channels, and each first heat exchange channel including three first heat exchange parts and one second heat exchange part, each battery cell can exchange heat with two heat exchange parts, thereby improving the temperature uniformity of each battery cell and thus improving the temperature uniformity of the entire battery.

[0124] In some embodiments, there are two first heat exchange channels, each first heat exchange channel including: five first heat exchange sections, one second heat exchange section, one third heat exchange section, one fourth heat exchange section, and one third heat exchange segment. There are six battery cells. The battery cells located at the end in the fifth direction are attached to one first heat exchange section and one second heat exchange section to exchange heat. Any of the remaining battery cells are attached to two first heat exchange sections to exchange heat. The third heat exchange section connects the second heat exchange section and the first heat exchange section farthest from the second heat exchange section, and is attached to the second group of battery cells to exchange heat. The third heat exchange segment connects to the first heat exchange section closest to the second heat exchange section. The third heat exchange segment and / or the fourth heat exchange section are attached to the third group of battery cells to exchange heat.

[0125] 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.

[0126] In some embodiments, there are two first heat exchange channels, each first heat exchange channel including: five first heat exchange sections, one second heat exchange section, one third heat exchange section, one fourth heat exchange section, and one third heat exchange segment. There are four battery cells. The battery cell located at the end in the fifth direction is in contact with two first heat exchange sections and one second heat exchange section to perform heat exchange. Any of the remaining battery cells is in contact with three first heat exchange sections to perform heat exchange. The third heat exchange section connects the second heat exchange section and the first heat exchange section farthest from the second heat exchange section, and is in contact with the second group of battery cells to perform heat exchange. The third heat exchange segment connects the first heat exchange section closest to the second heat exchange section. The third heat exchange segment and / or the fourth heat exchange section are in contact with the third group of battery cells to perform heat exchange.

[0127] In the above embodiments, by setting four battery cells to match two first heat exchange channels, and each first heat exchange channel including five first heat exchange parts and one second heat exchange part, 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, it can also increase the heat exchange area of ​​the heat exchange component to each battery cell, thereby improving the heat exchange effect of the heat exchange component and improving the temperature uniformity of the battery.

[0128] In some embodiments, the battery includes a housing, which includes a housing body. The housing body is an integrally stamped part and includes a bottom wall and a surrounding wall. The battery assembly is disposed within the housing body.

[0129] In the above embodiments, by setting the box body as an integral stamped part, the process steps of the box body can be reduced, the production cost of the box body can be reduced, and the overall weight of the box body can be reduced while ensuring the rigidity of the box body. In this way, the overall weight of the battery can be reduced, and the load on the vehicle can be reduced.

[0130] In some embodiments, the thermal management system of the battery includes a temperature regulating element, which includes at least one of a first temperature regulating element and a second temperature regulating element. The first temperature regulating element is disposed outside the casing body and is attached to the outer wall of the casing body. The second temperature regulating element is disposed inside the casing body and is located between the peripheral wall of the battery cell and the casing body. At least one of the first temperature regulating element and the second temperature regulating element forms a heat exchange element.

[0131] In the above embodiments, by setting at least one of the first temperature regulating element and the second temperature regulating element as a heat exchange element, the battery thermal management system can better manage the battery's thermal performance, so that the battery assembly can operate in a good temperature environment during battery operation, thereby making the battery operation more stable and the battery performance better.

[0132] In some embodiments, the thermal management system of the battery further includes a third temperature regulating element, which is disposed in the housing and located between two adjacent battery cells. The structure of the third temperature regulating element may be the same as or different from that of the heat exchange element.

[0133] In the above embodiments, by setting a third temperature regulating element between two adjacent battery cells, the third temperature regulating element can make large-area contact with the battery cells, thereby increasing the contact area between the third temperature regulating element and the battery cells, thus improving the heat exchange effect of the third temperature regulating element and improving the overall heat exchange efficiency of the battery.

[0134] In some embodiments, the housing further includes a bottom protective plate disposed on the lower side of the housing body, and a heat exchange component disposed between the housing body and the bottom protective plate; the battery further includes a foaming component, at least a portion of which fills the gap formed by the bending of the heat exchange tube of the heat exchange component.

[0135] In the above embodiments, by providing a foaming component, and having at least a portion of the foaming component fill the gap formed by the bends in the heat exchange tubes of the heat exchange component, the heat exchange component can be fixed in a certain way, allowing the heat exchange component to be arranged more stably between the bottom protective plate and the bottom wall of the casing body. At the same time, when the battery is subjected to external impact, the foaming component can also absorb a certain amount of impact energy, providing a certain degree of protection for the heat exchange component and further reducing the probability of damage to the heat exchange component.

[0136] In some embodiments, the foaming component includes a body and a plurality of ribs, the plurality of ribs being formed on one side surface of the body in the thickness direction, the plurality of ribs cooperating with the body to define a receiving groove, and a heat exchange tube being arranged in the receiving groove, the thickness of the heat exchange tube being greater than the depth of the receiving groove.

[0137] In the above embodiments, by setting 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 receiving groove, the heat exchange effect of the heat exchange tube can be guaranteed.

[0138] Thirdly, embodiments of this application provide an electrical device including a battery according to the second aspect of this application.

[0139] According to the electrical device of this application, by providing the battery described in the second aspect above, the overall performance of the electrical device is improved.

[0140] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0141] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0142] Figure 2 This is an exploded view of a battery according to an embodiment of this application;

[0143] Figure 3 This is an exploded view of a battery according to another embodiment of this application;

[0144] Figure 4 This is a schematic diagram of the battery assembly and heat exchanger according to the first embodiment of this application;

[0145] Figure 5 This is a schematic diagram of the battery assembly and heat exchanger according to the second embodiment of this application;

[0146] Figure 6 This is a schematic diagram of the battery assembly and heat exchanger according to the third embodiment of this application;

[0147] Figure 7 This is a schematic diagram of the battery assembly and heat exchanger according to the fourth embodiment of this application;

[0148] Figure 8 This is a schematic diagram of the battery assembly and heat exchanger according to the fifth embodiment of this application;

[0149] Figure 9 This is a schematic diagram of the heat exchanger and battery housing according to some embodiments of this application;

[0150] Figure 10 These are schematic diagrams of heat exchangers and housings according to other embodiments of this application;

[0151] Figure 11 This is a schematic diagram of a heat exchanger from one angle according to an embodiment of this application;

[0152] Figure 12 A schematic diagram of the current collector according to an embodiment of this application;

[0153] Figure 13 A schematic diagram of the current collector from another angle according to an embodiment of this application;

[0154] Figure 14 This is a schematic diagram of a heat exchanger according to another embodiment of this application;

[0155] Figure 15 yes Figure 14 Enlarged view of point A circled in the image;

[0156] Figure 16 yes Figure 14 A schematic diagram of the heat exchanger from another angle;

[0157] Figure 17 yes Figure 16 Enlarged view of point B circled in the image;

[0158] Figure 18 This is a schematic diagram of the battery assembly and heat exchanger according to the sixth embodiment of this application;

[0159] Figure 19 This is a schematic diagram of the battery assembly and heat exchanger according to the seventh embodiment of this application;

[0160] Figure 20 This is a schematic diagram of the battery assembly and heat exchanger according to the eighth embodiment of this application;

[0161] Figure 21 This is a schematic diagram of the battery assembly and heat exchanger according to the ninth embodiment of this application;

[0162] Figure 22 This is a schematic diagram of a battery assembly and heat exchanger according to the tenth embodiment of this application;

[0163] Figure 23 This is a schematic diagram of the battery assembly and heat exchanger according to the eleventh embodiment of this application;

[0164] Figure 24 This is an exploded view of a battery according to another embodiment of this application;

[0165] Figure 25 This is a partial cross-sectional view of a battery according to yet another embodiment of this application;

[0166] Figure 26 This is a partial schematic diagram of a battery according to another embodiment of this application;

[0167] Figure 27 yes Figure 24 A partial schematic diagram of the battery shown;

[0168] Figure 28 yes Figure 25 The enlarged view of point C circled in the image.

[0169] Figure label:

[0170] 1. Vehicles;

[0171] 1000, battery;

[0172] 100. Heat exchanger components;

[0173] 10. First heat exchange channel; 11. First heat exchange section; 111. First heat exchange part; 112. First bend; 12. Second heat exchange section; 120. U-shaped area; 121. Second heat exchange part; 122. Third heat exchange part; 123. Second bend; 124. Third bend; 125. Fourth heat exchange part; 126. Sixth bend; 127. Fifth heat exchange part; 13. Third heat exchange section; 14. Fourth bend; 15. First inlet / outlet section; 16. Fifth bend; 17. Second inlet / outlet section; 18. Seventh bend; 19. Mounting component;

[0174] 20. Current collector; 21. Pipe body; 211. First space; 212. Second space; 22. First flow channel interface; 23. Second flow channel interface; 24. Separation structure; 241. First partition plate; 242. Second partition plate;

[0175] 30. Second heat exchange channel; 31. Fourth heat exchange section; 40. Third heat exchange channel;

[0176] 200. Battery assembly; 201. Battery cell; 2011. Battery cell; 202. First group of battery cells; 203. Second group of battery cells; 204. Third group of battery cells; 205. Fourth group of battery cells; 206. Fifth group of battery cells;

[0177] 300. Box body; 301. Box main body; 302. Bottom guard plate; 303. Cover plate;

[0178] 400. Foam parts; 401. Body; 402. Convex ribs;

[0179] 500. Temperature regulating component; 501. First temperature regulating component; 502. Second temperature regulating component; 503. Third temperature regulating component;

[0180] 2000, controller; 3000, motor. Detailed Implementation

[0181] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0182] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0183] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0184] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0185] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0186] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0187] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0188] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0189] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0190] It is understandable that the temperature environment inside a battery is affected by external weather conditions. The individual battery cells need to operate within a certain temperature range. When the internal temperature exceeds or falls below this range, the battery's stability and performance will be significantly affected. For example, in hot weather, the battery needs to cool down the individual cells to maintain the required internal temperature; in cold weather, the battery needs to heat up the individual cells to keep the internal temperature within the necessary range.

[0191] In related technologies, batteries are typically equipped with heat exchange structures to dissipate heat and cool down individual battery cells, as well as to heat them up. However, because the battery cells located on the periphery are closer to the side walls of the casing than the inner battery cells, the outer battery cells can easily dissipate heat through the side walls or end plates of the battery and are less affected by the heat dissipation of adjacent battery cells. In contrast, the inner battery cells have more difficulty dissipating heat and are more affected by the heat dissipation of adjacent battery cells. As a result, the heat dissipation of battery cells in different locations is different, leading to an uneven temperature distribution between the outer and inner battery cells after the battery is in operation. This results in poor battery stability and a tendency for battery performance to degrade during operation.

[0192] Based on the above considerations, in order to solve the temperature difference caused by heat dissipation from the outer battery cells and to make the temperature distribution between the outer and inner battery cells more uniform, this application proposes a heat exchange component. The heat exchange component 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 region, and the first heat exchange section is bent and disposed within the U-shaped region and bent and connected to the second heat exchange section. This allows the second heat exchange section to exchange heat with multiple outer battery cells. When the battery needs heating under low-temperature conditions, the second heat exchange section... The second heat exchange section can be located upstream of the first heat exchange section along the fluid flow direction, meaning 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. In this case, the low-temperature fluid passes through the first heat exchange section first and then to the second heat exchange section. The temperature of the heat exchange fluid at the location of the second heat exchange section is higher. This ensures that the temperature of the heat exchange fluid inside the second heat exchange section is always higher than the temperature inside the first heat exchange section. As a result, the temperature difference caused by heat dissipation around the battery can be improved, the temperature uniformity of the battery can be improved to a certain extent, and thus the battery life can be improved to a certain extent.

[0193] The heat exchanger disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0194] For ease of explanation, the following embodiments will be described using a vehicle 1 as an example of an electrical device according to an embodiment of this application.

[0195] Reference Figure 1 , Figure 1 This is a schematic diagram of a vehicle 1 provided in some embodiments of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery 1000 is installed inside vehicle 1, and the battery 1000 can be located at the bottom, front, or rear of vehicle 1. The battery 1000 can be used to power vehicle 1; for example, the battery 1000 can serve as the operating power source for vehicle 1. Vehicle 1 may also include a controller 2000 and a motor 3000. The controller 2000 is used to control the battery 1000 to supply power to the motor 3000, for example, to meet the power needs of vehicle 1 during starting, navigation, and driving.

[0196] In some embodiments of this application, the battery 1000 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0197] Reference Figures 2-3 , Figure 2 This is an exploded view of the battery 1000 according to some embodiments of this application. Figure 3 The exploded view of a battery 1000 according to other embodiments of this application shows that the battery 1000 includes a housing 300, a battery cell 2011, and a heat exchanger 100. The housing 300 has a receiving cavity, and the battery cell 2011 is received in the receiving cavity of the housing 300. The heat exchanger 100 may be disposed between the battery cell 2011 and the housing 300, or between adjacent battery cells 2011.

[0198] The housing 300 provides a space for housing the battery cell 2011, and can adopt various structures. In some embodiments, the housing 300 may include a first part (e.g., the housing body 301 described below) and a second part (e.g., the cover plate 303 described below), the first part and the second part overlapping each other, and the first part and the second part together define a space for housing the battery cell 2011. The second part may be a hollow structure with one end open, and the first part may be a plate-like structure, with the first part covering the open side of the second part so that the first part and the second part together define the space; the first part and the second part may also be hollow structures with one side open, with the open side of the first part covering the open side of the second part. Of course, the housing 300 formed by the first part and the second part can be of various shapes, such as a cylinder, a cuboid, etc. Optionally, in some embodiments, the housing 300 also includes a bottom protective plate 302, which is disposed on the lower side of the housing body 401 to further enhance the load-bearing strength and impact resistance of the bottom of the housing body 401. The base plate can be made of various materials, including but not limited to: copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0199] In battery 1000, there can be multiple battery cells 2011, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 2011 are connected in both series and parallel configurations. Multiple battery cells 2011 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 2011 is housed within the casing 300. Alternatively, battery 1000 can also consist of multiple battery cells 2011 first connected in series, parallel, or in a mixed manner to form a battery module, and then multiple battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the casing 300. Battery 1000 may also include other structures; for example, it may include a busbar component for electrical connection between multiple battery cells 2011.

[0200] Each battery cell 2011 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 2011 can be cylindrical, flat, cuboid, or other shapes.

[0201] In the battery 1000, the heat exchanger 100 can be disposed between the multiple battery cells 2011 and the top wall of the housing 300, or between the multiple battery cells 2011 and the bottom wall of the housing 300, or between the bottom wall of the housing 300 and the bottom protective plate 302, or between two adjacent battery cells 2011, to provide heat exchange for the multiple battery cells 2011. In some embodiments, the heat exchanger 100 may include a heat exchange tube and a current collector 20, wherein the heat exchange tube is connected to the current collector 20, and the heat exchange tube may be a flat tube, a round tube, a harmonica tube, or other shaped tube, and the current collector 20 may be a rectangular tube or a round tube, etc.

[0202] The following is for reference. Figures 4-17 A heat exchanger 100 according to an embodiment of the first aspect of this application is described. Figure 4 This is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the first embodiment of this application. Figure 5 This is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the second embodiment of this application. Figure 6 This is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the third embodiment of this application. Figure 7 This is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the fourth embodiment of this application. Figure 8 This is a schematic diagram of the battery assembly 200 and the heat exchanger 100 according to the fifth embodiment of this application. Figure 9 This is a schematic diagram of the heat exchanger 100 and the housing 300 of the battery 1000 according to some embodiments of this application. Figure 10 This is a schematic diagram of the heat exchanger 100 and the housing 300 according to other embodiments of this application. Figure 11 This is a schematic diagram of the heat exchanger 100 from one angle according to an embodiment of this application.

[0203] This application provides a heat exchanger 100, such as... Figure 4 As shown, the heat exchanger 100 is used for the battery 1000, the battery 1000 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 arranged in sequence; the plurality of battery cells 2011 located on the outermost periphery of the battery assembly 200 form an outer battery cell.

[0204] The heat exchanger 100 is adapted to be disposed on one side of the battery assembly 200 and to exchange heat with the battery assembly 200. The heat exchanger 100 includes a first heat exchange channel 10, which 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 region 120. The first heat exchange section 11 is bent and disposed within the U-shaped region 120 and is bent and connected to the second heat exchange section 12. The U-shaped region is in contact with the outer battery cell regardless of whether the number of the first heat exchange channels 10 is one or more, so as to exchange heat with the outer battery cell. The first heat exchange section 11 exchanges heat with the corresponding battery cell located within the U-shaped region.

[0205] Specifically, the battery 1000 may include multiple battery cells 2011. 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 within the safe operating temperature, thus ensuring the operational reliability of the battery 1000.

[0206] The statement that "the second heat exchange section 12 is bent to form a U-shaped region 120, and the first heat exchange section 11 is bent and disposed within the U-shaped region 120" is intended to illustrate that the second heat exchange section 12 is disposed 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 periphery of the battery 1000 relative to the first heat exchange section 11.

[0207] The second heat exchange section 12 is bent to form a U-shaped region 120, that is, in the direction from one end of the second heat exchange section 12 to the other end, the second heat exchange section 12 extends along the lines of the U-shape to form a U-shaped region 120.

[0208] The first heat exchange section 11 is bent within the U-shaped area 120, that is, the first heat exchange section 11 is arranged within the space enclosed by the second heat exchange section 12, and the first heat exchange section 11 extends non-linearly on the inner side of the second heat exchange section 12, having at least one bent position.

[0209] It should be noted that in this embodiment, the bending of the first heat exchange section 11 is limited to being located within the U-shaped region 120, but the bending form of the first heat exchange section 11 is not limited. That is, the specific bending form of the first heat exchange section 11 can be designed according to the heat exchange requirements of the battery 1000. For example, the first heat exchange section 11 can be along the length direction of the battery cell 2011 (i.e., Figure 4 It extends in the Y1 direction and then, after reaching a certain length, moves towards the width direction of the battery cell 2011 (i.e., Figure 4 The first heat exchange section 11 can bend along the width direction of the battery cell 2011 (in the X1 direction), 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 bend towards the length direction of the battery cell 2011 after extending to a certain length, and then continue to extend along the width direction of the battery cell 2011 and bend along the length direction.

[0210] The first heat exchange section 11 and the second heat exchange section 12 are connected by bending. That is, one end of the first heat exchange section 11 and one end of the second heat exchange section 12 are connected, and the connection position of the first heat exchange section 11 and the second heat exchange section 12 is a bent non-linear structure. For example, the connection position of the first heat exchange section 11 and the second heat exchange section 12 can be bent into an arc.

[0211] The first heat exchange section 11 and the second heat exchange section 12 are connected. Thus, one of the ends of the first heat exchange section 11 away from the second heat exchange section 12 and the other end of the second heat exchange section 12 away from the first heat exchange section 11 can be used as the liquid inlet and the other can be used as the liquid outlet. Therefore, when the first heat exchange channel 10 is performing heat exchange, 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.

[0212] Understandably, as the heat exchange fluid flows through the first heat exchange channel 10, its temperature gradually changes, leading to a gradual decrease in heat exchange efficiency. For example, when the heat exchanger 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. This results in a gradual decrease in the temperature difference between the heat exchanger 100 and the battery cells 2011, and a gradual decrease in heat exchange efficiency. Conversely, when the heat exchanger 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. This results in a gradual decrease in the temperature difference between the heat exchanger 100 and the battery cells 2011, and a gradual decrease in heat exchange efficiency.

[0213] In this embodiment, when the heat exchanger 100 cools the battery assembly 200, the heat exchange fluid can flow from the first heat exchange section 11 to the second heat exchange section 12, or vice versa. 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 (i.e., the inner battery cells 2011 on the outer periphery) can be cooled first, and then the battery cells 2011 at the periphery of the battery 1000 can be cooled. Since the heat dissipation of the battery cells 2011 at the periphery of the battery 1000 is better than that of the inner battery cells 2011, the lower-temperature heat exchange fluid in the first heat exchange section 11 can better meet the heat dissipation requirements of the battery cells 2011 in the middle of the battery 1000. The battery cells 2011 at the periphery can directly face the external environment for natural heat dissipation. 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 requirements of the peripheral battery cells 2011. This makes the cooling effect of the battery cells 2011 at the periphery of the battery 1000 and the battery cells 2011 in the middle of the battery 1000 roughly the same. As a result, the temperature of the battery cells 2011 at the periphery of the battery 1000 and the battery cells 2011 in the middle of the battery 1000 is relatively consistent after cooling, making the temperature distribution inside the battery 1000 more uniform.

[0214] When the heat exchanger 100 heats the battery assembly 200, the heat exchange fluid can flow from the first heat exchange section 11 to the second heat exchange section 12, or vice versa. For example, when the heat exchange fluid flows from the second heat exchange section 12 to the first heat exchange section 11, it can first heat the battery cells 2011 surrounding the battery assembly 200, and then cool the battery cells 2011 in the middle of the battery assembly 200. Since the battery cells 2011 surrounding the battery 1000 dissipate more heat to the external environment, their temperature drops more easily. By first heating the battery cells 2011 surrounding the battery 1000, the higher-temperature heat exchange fluid can compensate for the heat lost by the battery cells 2011 due to heat dissipation to the external environment while raising their temperature. To meet its heating needs, the battery cells 2011 in the middle of the battery module 200 have a small contact area with the external environment, resulting in less heat loss. The lower-temperature heat exchange fluid flowing in the first heat exchange section 11 can work well with the heat generated by the battery cells 2011 themselves to meet their heating needs. As a result, the heating effect obtained by the battery cells 2011 around the battery 1000 and the battery cells 2011 in the middle of the battery module 200 is basically the same. Consequently, the temperature of the battery cells 2011 around the battery 1000 and the battery cells 2011 in the middle of the battery module 200 is more consistent after heating, making the temperature distribution inside the battery 1000 more uniform.

[0215] Furthermore, the battery module 200 consists of multiple battery cells 2011 located on the outermost periphery in the circumferential direction, forming an outer battery cell. The number of first heat exchange channels 10 can be one, or two or more, and the second heat exchange section 12 of each first heat exchange channel 10 can be bent to form a U-shaped region.

[0216] Specifically, when there is one first heat exchange channel 10, the heat exchanger 100 has one U-shaped region, which is entirely in contact with the outer battery cell for heat exchange. When there are two first heat exchange channels 10, the heat exchanger 100 has two U-shaped regions, both of which are in contact with the outer battery cell for heat exchange. When there are N first heat exchange channels 10, where N is an integer greater than 2, the heat exchanger 100 has N U-shaped regions, all of which are in contact with the outer battery cell for heat exchange.

[0217] In other words, regardless of how many first heat exchange channels 10 the heat exchanger 100 has, the U-shaped regions formed by the bending of the second heat exchange sections 12 of all the first heat exchange channels 10 are all in contact with the outer battery cells, achieving heat exchange between all U-shaped regions and the outer battery cells. At the same time, the first heat exchange section 11 exchanges heat with the corresponding battery cells located within the U-shaped regions.

[0218] Because the periphery of the battery module 200 dissipates more heat to the environment, the temperature of the outer battery cells is relatively lower than that of the inner battery cells. Meanwhile, the temperature of the heat exchange fluid within the second heat exchange section 12 remains the highest. Therefore, the second heat exchange section 12 is entirely in contact with the outer battery cells, which improves the heat exchange efficiency of the outer battery cells and further balances the temperature difference in the battery module 200 caused by heat dissipation. By ensuring that the U-shaped area formed by the bend in the second heat exchange section 12 is entirely in contact with the outer battery cells, regardless of whether the number of first heat exchange channels is one or more, the heat exchange efficiency of the outer battery cells can be improved, further balancing the temperature difference in the battery module 200 caused by heat dissipation.

[0219] In the above embodiment, by bending the second heat exchange section 12 to form a U-shaped region 120, and bending the first heat exchange section 11 within the U-shaped region 120, regardless of whether the number of the first heat exchange channels 10 is one or more, the U-shaped region formed by bending the second heat exchange section 12 is completely in contact with the outer battery cell group. The first heat exchange section 11 exchanges heat with the corresponding battery cell located within the U-shaped region. When the heat exchange component 100 exchanges heat with the battery assembly 200, the heat exchange component 100 can compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cell 2011 and the environment, so that the heat exchange effect of the outer battery cell of the battery assembly 200 and the battery cell 2011 inside the battery assembly 200 tends to be consistent, improving the temperature uniformity of the battery 1000, thereby improving the service life of the battery 1000 to a certain extent.

[0220] According to some embodiments of this application, such as Figure 4 As shown, the second heat exchange section 12 can be located on the outermost side of the circumference of the first heat exchange channel 10.

[0221] In other words, the second heat exchange section 12 is formed as the outermost flow channel of the first heat exchange flow channel 10. In this way, the second heat exchange section 12 can be used to exchange heat with the battery cells 2011 around the battery 1000, thereby improving the temperature uniformity of the battery cells 2011 around the battery 1000.

[0222] In the above embodiment, by setting the second heat exchange section 12 to be located at the outermost circumferential direction of the first heat exchange channel 10, the second heat exchange section 12 can exchange heat with the battery cells 2011 on the outer circumferential direction of the battery module 200, which is beneficial to improve the internal and external temperature difference of the battery module 200 caused by heat exchange with the environment, and to a certain extent improve the service life of the battery module 200.

[0223] According to some embodiments of this application, the first heat exchange section 11 and the second heat exchange section 12 can be bent in the same plane.

[0224] In the above embodiments, by setting the first heat exchange section 11 and the second heat exchange section 12 to be bent in the same plane, the first heat exchange channel 10 can exchange heat with the battery 1000 in the same plane. This simplifies the structure of the first heat exchange channel 10, reduces the manufacturing difficulty of the first heat exchange channel 10, and also reduces the space occupied by the first heat exchange channel 10, thereby increasing the volumetric energy density of the battery 1000.

[0225] According to some embodiments of this application, such as Figures 4-5 As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, which are arranged at intervals and connected by bending in sequence.

[0226] In other words, multiple first heat exchange sections 111 are connected sequentially, and the connection point between two connected first heat exchange sections 111 is bent. For example, two connected first heat exchange sections 111 can be bent along a zigzag line or along an arc. The number of first heat exchange sections 111 can be two, three, four, five or more.

[0227] It should be noted that the shape of the first heat exchange section 111 can be varied, for example, the first heat exchange section 111 can be straight or curved. The extension direction of the first heat exchange section 111 can also be varied, for example, it can extend along the length direction or the thickness direction of the battery cell 2011. In this way, multiple first heat exchange sections 111 are sequentially bent and connected, so that the first heat exchange section 11 can form heat exchange channels in the form of S-shape, Z-shape, V-shape, etc.

[0228] In the above embodiments, on the one hand, by providing multiple first heat exchange sections 111, the heat exchange area of ​​the first heat exchange section 11 can be increased, thereby increasing the heat exchange area of ​​the first heat exchange channel 10, and thus 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 multiple first heat exchange sections 111, the overall heat exchange effect can be guaranteed while ensuring that the temperature difference between the internal and external battery cells is small.

[0229] According to some embodiments of this application, such as Figure 4 As shown, a plurality of first heat exchange sections 111 are arranged along a first direction (i.e., Figure 4 The first heat exchange section 111 is arranged at intervals along the Y1 direction (as shown), and each first heat exchange section 111 is arranged along the second direction (i.e., Figure 4 The X1 direction shown extends in a straight line, with the first direction and the second direction forming an angle.

[0230] 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 only intersecting but not perpendicularly. For example, the first and second directions can be arranged at an angle of 30°, 60°, 80°, 120°, 150°, or 170°. Figure 4 As shown, the first direction is the length direction of the battery cell 2011, and the second direction is the thickness direction of the battery cell 2011. The first heat exchange section 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 sections 111 can be bent and connected to form an S-shaped heat exchange channel, which can achieve heat exchange for multiple battery cells 2011.

[0231] In the above embodiments, by setting the first heat exchange section 111 to extend in a straight line along the second direction, the production difficulty of the first heat exchange section 111 can be reduced, thereby reducing the production complexity of the first heat exchange channel 10. At the same time, the straight pipe can also increase the flow velocity of the heat exchange fluid, thereby improving the heat exchange effect of the first heat exchange channel 10.

[0232] According to some embodiments of this application, such as Figure 4 As shown, the first heat exchange section 11 may further include: a first bending section 112, which is arc-shaped and bends between two adjacent first heat exchange sections 111.

[0233] The first bend 112 is arc-shaped, meaning it extends along an arc. The fluid flow directions at both ends of the first bend 112 form a certain angle. This allows the first bend 112 to change the fluid flow direction, enabling the two connected first heat exchange sections 111 to extend and arrange within a predetermined area. This increases the heat exchange area of ​​the first heat exchange section 11 and improves its heat exchange efficiency. Simultaneously, the arc shape of the first bend 112 reduces fluid flow resistance and pressure drop, thereby increasing the fluid flow rate and further enhancing the heat exchange efficiency of the first heat exchange section 11.

[0234] Furthermore, the number of 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 roundabout 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.

[0235] In the above embodiment, by providing the first bending portion 112, the fluid flow direction inside the first heat exchange section 11 can be changed, achieving a smooth transition connection between the two first heat exchange sections 111 and realizing the tortuous 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. Simultaneously, the arc shape of the first bending portion 112 reduces fluid flow resistance and pressure drop, thereby increasing the fluid flow rate and further enhancing the heat exchange efficiency of the first heat exchange section 11. Furthermore, the provision of the first bending portion 112 makes the structure of the first heat exchange section 11 more compact, occupying a smaller overall space, which is more conducive to the miniaturization design of the battery 1000 and ensures the volumetric energy density of the battery 1000.

[0236] According to some embodiments of this application, such as Figure 4 As shown, the first bend 112 can be semi-circular.

[0237] In other words, the first bend 112 can extend along a semi-circular arc. Specifically, the first bend 112 can extend along a semi-circular arc that protrudes away from the direction of the two first heat exchange sections 111 connected by the first bend 112. The angle between the inlet and outlet of the first bend 112 is 180°, and the flow directions at the outlet and inlet positions of the first bend 112 are opposite. This brings the two adjacent first heat exchange sections 111 closer together, making the structure of the entire first heat exchange section 11 more compact and reliable. The first bend 112 is used to connect two parallel and spaced-apart first heat exchange sections 111. In other embodiments, the bend angle of the first bend 112 can be adjusted according to requirements, for example, it can be 150°, 135°, etc., and the embodiments of this application do not limit this.

[0238] Two first heat exchange sections 111 can be connected by a first bending section 112 to form a "U"-shaped heat exchange channel. The first heat exchange section 11 can contain 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 by the first bending section 112.

[0239] In the above embodiments, by setting the first bending portion 112 to be semi-circular, the design diversity of the heat exchange channel can be increased, thereby improving the compatibility between the heat exchange component 100 and the battery 1000; at the same time, the semi-circular structure is relatively simple, thereby reducing the production difficulty of the heat exchange component 100 and increasing the production speed of the heat exchange component 100.

[0240] According to some embodiments of this application, such as Figure 4As shown, the second heat exchange section 12 may include: a second heat exchange part 121, a third heat exchange part 122, and a fourth heat exchange part 125. The second heat exchange part 121 extends along the first side periphery 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 periphery 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 communicates 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 periphery of the first heat exchange section 11.

[0241] It is understood that the fourth heat exchange section 125 is connected to the end of the second heat exchange section 121 away from the third heat exchange section 122. The fourth heat exchange section 125, the second heat exchange section 121 and the third heat exchange section 122 are connected in sequence to form a U-shaped region 120. The first heat exchange section 11 is arranged in the U-shaped region 120 and is connected to the end of the third heat exchange section 122 away from the second heat exchange section 121.

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

[0243] 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 is connected to the first heat exchange section 11 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0244] The fourth heat exchange section 125 is connected to the second heat exchange section 121 at an angle, that is, the fourth heat exchange section 125 is connected to the second heat exchange section 121 at an angle greater than 0° and less than 180°. For example, the fourth heat exchange section 125 is connected to the second heat exchange section 121 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0245] It should be noted that this embodiment limits the second heat exchange section 12 to be arranged on three sides of the first heat exchange section 11 in the circumferential direction, 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 the actual situation. 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, then 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, then 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.

[0246] In the above embodiments, by arranging the second heat exchange section 121, the third heat exchange section 122, and the fourth heat exchange section 125 on three sides of the first heat exchange section 11, the second heat exchange section 12 can surround the first heat exchange section 11, thereby increasing the compactness of the arrangement of the first heat exchange channel 10, realizing the miniaturization of the structure of the first heat exchange channel 10, which is beneficial to improving the volumetric energy density of the battery 1000. At the same time, it can also simplify the structure of the first heat exchange channel 10, making it convenient for the processing and production of the heat exchange component 100.

[0247] According to some embodiments of this application, such as Figure 4 As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, which are sequentially bent and connected in a 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 a second direction, the first direction and the second direction being arranged at an angle; the 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 the 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 furthest from the second heat exchange part 121 along the first direction; the fourth heat exchange part 125 is located on the other side of the plurality of first heat exchange parts 111 along the second direction, one end of the fourth heat exchange part 125 is connected to the end of the second heat exchange part 121 that is furthest from the third heat exchange part 122, and the other end of the fourth heat exchange part 125 extends along the first direction in a direction furthest from the second heat exchange part 121.

[0248] Multiple first heat exchange sections 111 are sequentially bent and connected in a first direction. That is, multiple first heat exchange sections 111 are arranged sequentially in the first direction, and adjacent and connected first heat exchange sections 111 are bent and connected in the first direction. The first heat exchange section 111 can extend along a straight line parallel to the second direction, or it can extend along a straight line arranged at an angle to the second direction, or it can extend along a curve and / or a broken line in the second direction.

[0249] It is understandable that the fourth heat exchange section 125, the second heat exchange section 121, the third heat exchange section 122 and the first heat exchange section 111 farthest from the second heat exchange section 121 are connected in sequence, and the multiple first heat exchange sections 111 are arranged at intervals along the first direction and connected in sequence. In this way, the heat exchange fluid can flow sequentially through the fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122, 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 section 111 furthest from the second heat exchange section 121, and finally flows to the first heat exchange section 111 closest to the second heat exchange section 121. Alternatively, the heat exchange fluid can first flow into the first heat exchange section 11, and in the first heat exchange section 11, the fluid first flows through the first heat exchange section 111 closest to the second heat exchange section 121, flows out from the first heat exchange section 111 furthest from the second heat exchange section 121, and then flows to the third heat exchange section 122, and then flows sequentially through the second heat exchange section 121 and the fourth heat exchange section 125 through the third heat exchange section 122.

[0250] In addition, the phrase "the first direction and the second direction are arranged at an angle" is intended to indicate that the first direction and the second direction can be arranged perpendicularly or they can be arranged in a non-perpendicular manner that only intersects. For example, the first direction and the second direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0251] For example Figure 4 As shown, the first direction can be the length direction of the battery cell 2011, that is... Figure 4 The Y1 direction shown is the direction of the thickness of the battery cell 2011, and the second direction is the direction of the thickness of the battery cell 2011. Figure 4The X1 direction is shown. Taking the first heat exchange channel 10 arranged in the Y1 direction away from the origin as an example, the first heat exchange section 111 extends in a straight line along the X1 direction, and multiple first heat exchange sections 111 are arranged at intervals in the Y1 direction. The second heat exchange section 121 is arranged on the side of the multiple first heat exchange sections 111 away from the origin in the Y1 direction and extends in a straight line in the X1 direction, and is used for heat exchange with the edge of the battery assembly 200 away from the origin in the Y1 direction. The third heat exchange section 122 is arranged on the side of the multiple first heat exchange sections 111 close to the origin in the X1 direction and extends in a straight line in the Y1 direction. The third heat exchange section 122 is used for heat exchange with the edge of the battery assembly 200 close to the origin in the X1 direction. The fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 away from the origin in the X1 direction and extends in a straight line in the Y1 direction. The fourth heat exchange section 125 can be used for heat exchange with the edge of the battery assembly 200 away from the origin in the X1 direction.

[0252] In the above embodiment, by setting multiple first heat exchange sections 111 to be bent and connected sequentially in a first direction, a second heat exchange section 121 is located on one side of the multiple first heat exchange sections 111 along the first direction, a third heat exchange section 122 is located on one side of the multiple first heat exchange sections 111 along the second direction, and a fourth heat exchange section 125 is located on the other side of the multiple first heat exchange sections 111 along the second direction, the positional relationship between the second heat exchange section 121, the third heat exchange section 122, the fourth heat exchange section 125 and the first heat exchange section 111 is defined, the layout of the first heat exchange channel 10 is further defined, the structure of the first heat exchange channel 10 is simplified, and it is easy to process and manufacture.

[0253] According to some specific embodiments of this application, such as Figure 4 As shown, the third heat exchange section 122 and the fourth heat exchange section 125 are along the first direction (e.g., Figure 4 As shown in the Y1 direction, the first heat exchanger 111 and the second heat exchanger 121 are both extended along the second direction.

[0254] Furthermore, the third heat exchange section 122 and the fourth heat exchange section 125 can both extend in a straight line along the first direction, and the first heat exchange section 111 and the second heat exchange section 121 can both extend in a straight line along the second direction. Among these, the straight-line structure is simple, convenient to manufacture, and easy to arrange, thereby further reducing the manufacturing complexity and cost of the first heat exchange channel 10.

[0255] In the above embodiments, by setting the third heat exchange section 122 and the fourth heat exchange section 125 to extend along the first direction, and the first heat exchange section 111 and the second heat exchange section 121 to extend along the second direction, it is beneficial to arrange the first heat exchange channel 10 in a roundabout way, thereby reducing the production difficulty of the first heat exchange channel 10 and reducing the production cost of the heat exchange component 100.

[0256] Based on some examples in this application, such as Figure 4 As shown, the third heat exchange section 122 and the fourth heat exchange section 125 are both extended along the first direction. In the first direction, the length b1 of the fourth heat exchange section 125 is less than or equal to the length a1 of the third heat exchange section 122.

[0257] When the length b1 of the fourth heat exchange section 125 is equal to the length a1 of the third heat exchange section 122, the fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 are connected in sequence to form a standard U-shaped flow channel; when the length b1 of the fourth heat exchange section 125 is less than the length a1 of the third heat exchange section 122, it is advantageous to avoid other flow channel sections of the first heat exchange flow channel 10 (e.g., to avoid...). Figure 4 The first inlet / outlet section 15 shown avoids other heat exchange channels or other components, which is beneficial to the layout of the first heat exchange channel 10 and the compact structure.

[0258] In the above embodiments, by setting the length of the fourth heat exchange section 125 to be equal to the length of the third heat exchange section 122, the dimensions of the two ends of the U-shaped region 120 can be made close, which is beneficial to controlling the temperature difference of the battery cells 2011 at both ends of the battery assembly 200 in the second direction and improving the temperature uniformity of the battery assembly 200. By setting the length of the fourth heat exchange section 125 to be less than the length of the third heat exchange section 122 in the first direction, it is convenient for the fourth heat exchange section 125 to be connected to the current collector, and the fourth heat exchange section 125 can also avoid other flow channel sections, other flow channel structures or other components of the first heat exchange flow channel 10.

[0259] According to some specific embodiments of this application, such as Figure 4 As shown, the fourth heat exchange section 125 extends along the first direction and extends to a position close to the one of the plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121.

[0260] Specifically, the fourth heat exchange section 125 extends along the first direction. One end of the fourth heat exchange section 125 is connected to the second heat exchange section 121, and the other end of the fourth heat exchange section 125 extends to a position close to the first heat exchange section 111 that is furthest from the second heat exchange section 121. That is, the other end of the fourth heat exchange section 125 extends to be flush with the first heat exchange section 111 that is furthest from the second heat exchange section 121, or the other end of the fourth heat exchange section 125 extends to be close to the first heat exchange section 111 that is furthest from the second heat exchange section 121, or the other end of the fourth heat exchange section 125 extends beyond the first heat exchange section 111 that is furthest from the second heat exchange section 121.

[0261] This increases the length of the fourth heat exchange section 125, increases the heat exchange area between the fourth heat exchange section 125 and the battery assembly 200, further improves the heat exchange effect of the heat exchange component 100, and also benefits the layout of the first heat exchange channel 10.

[0262] In the above embodiment, by setting the fourth heat exchange section 125 to extend along the first direction and to a position close to the one of the plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121, the heat exchange area of ​​the fourth heat exchange section 125 can be increased, so that the first heat exchange channel 10 can exchange heat with the plurality of battery cells 2011 arranged corresponding to the first heat exchange channel 10 as much as possible, thereby improving the heat exchange comprehensiveness of the first heat exchange channel 10 and thus improving the heat exchange effect of the battery 1000.

[0263] According to some embodiments of this application, such as Figure 6 As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, which are sequentially bent and connected in a 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, the first direction and the second direction are arranged at an angle; the 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, the 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 the 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 the end of the second heat exchange part 121 that is away from the third heat exchange part 122, and the other end of the fourth heat exchange part 125 extends along the second direction in a direction away from the second heat exchange part 121.

[0264] Multiple first heat exchange sections 111 are sequentially bent and connected in a first direction. That is, multiple first heat exchange sections 111 are arranged sequentially in the first direction, and adjacent and connected first heat exchange sections 111 are bent and connected in the first direction. The first heat exchange section 111 can extend along a straight line parallel to the second direction, or it can extend along a straight line arranged at an angle to the second direction, or it can extend along a curve and / or a broken line in the second direction.

[0265] It is understood that the fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 are connected in sequence to the first heat exchange section 111 closest to the third heat exchange section 122, and the multiple first heat exchange sections 111 are arranged at intervals along the first direction and connected in sequence. In this way, the heat exchange fluid can flow sequentially through the fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122, 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 section 111 closest to the third heat exchange section 122, and finally flows to the first heat exchange section 111 furthest from the third heat exchange section 122. Alternatively, the heat exchange fluid can first flow into the first heat exchange section 11, and in the first heat exchange section 11, the fluid first flows through the first heat exchange section 111 furthest from the third heat exchange section 122, flows out from the first heat exchange section 111 closest to the third heat exchange section 122, and then flows sequentially through the second heat exchange section 121 and the fourth heat exchange section 125.

[0266] In addition, the phrase "the first direction and the second direction are arranged at an angle" is intended to indicate that the first direction and the second direction can be arranged perpendicularly or they can be arranged in a non-perpendicular manner that only intersects. For example, the first direction and the second direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0267] For example Figure 6 As shown, the first direction can be the length direction of the battery cell 2011, that is... Figure 6 The Y1 direction shown is the direction of the thickness of the battery cell 2011, and the second direction is the direction of the thickness of the battery cell 2011. Figure 6In the X1 direction shown, taking the first heat exchange channel 10 arranged in the Y1 direction away from the origin as an example, the first heat exchange section 111 extends in a straight line along the X1 direction, and multiple first heat exchange sections 111 are arranged at intervals in the Y1 direction. The second heat exchange section 121 is arranged on the side of the multiple first heat exchange sections 111 along the X1 direction close to the origin and extends in a straight line in the Y1 direction, and is used to exchange heat with the edge of the battery assembly 200 on the side ...

[0268] In the above embodiments, by setting the second heat exchange section 121 to one side of the plurality of first heat exchange sections 111 along the second direction, the third heat exchange section 122 to one side of the plurality of first heat exchange sections 111 along the first direction, and the fourth heat exchange section 125 to the other side of the plurality of first heat exchange sections 111 along the first direction, another layout of the first heat exchange channel 10 is defined. This increases the diversity of the first heat exchange channel 10, enabling it to meet the heat exchange requirements of different batteries 1000, simplifying the structure of the first heat exchange channel 10, and facilitating its processing and manufacturing.

[0269] According to some specific embodiments of this application, such as Figure 6 As shown, the first heat exchange section 111, the third heat exchange section 122, and the fourth heat exchange section 125 are along the second direction (e.g., Figure 6 The second heat exchange section 121 extends along the first direction (e.g., the X1 direction shown), and extends along the first direction (e.g., the X1 direction shown). Figure 6 Extending in the Y1 direction shown.

[0270] Furthermore, the first heat exchange section 111, the third heat exchange section 122, and the fourth heat exchange section 125 extend in a straight line along the second direction, while the second heat exchange section 121 extends in a straight line along the first direction. The straight-line structure is simple, convenient to manufacture, and easy to arrange, thereby further reducing the manufacturing complexity and cost of the first heat exchange channel 10.

[0271] In the above embodiments, by setting the first heat exchange section 111, the third heat exchange section 122 and the fourth heat exchange section 125 to extend along the second direction, and the second heat exchange section 121 to extend along the first direction, it is beneficial to arrange the first heat exchange channel 10 in a roundabout way, 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, this arrangement also makes the structure of the first heat exchange channel 10 more compact and reliable.

[0272] Based on some examples in this application, such as Figure 6 As shown, the first heat exchange section 111 and the third heat exchange section 122 extend along the second direction, and the second heat exchange section 121 extends along the first direction. In the second direction, the length a2 of the third heat exchange section 122 is greater than or equal to the length c1 of the first heat exchange section 111.

[0273] In the above embodiment, by setting the length a2 of the third heat exchange section 122 to be greater than the length c1 of the first heat exchange section 111 in the second direction, the first heat exchange section 11 can be covered within the U-shaped region 120 of the second heat exchange section 12, increasing the length of the third heat exchange section 122 and increasing its heat exchange area, so that the second heat exchange section 12 can enclose a larger U-shaped region 120, thereby improving the heat exchange effect of the heat exchanger 100. By setting the length a2 of the third heat exchange section 122 to be equal to the length c1 of the first heat exchange section 111, the length dimensions of the third heat exchange section 122 extending along the second direction of the first heat exchange channel 10 and the plurality of first heat exchange sections 121 are 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.

[0274] According to some embodiments of this application, such as Figure 4 As shown, the second heat exchange section 12 may further include a second bend 123 and a third bend 124. Both the second bend 123 and the third bend 124 are arc-shaped. The second bend 123 is connected between the first end of the third heat exchange section 122 and the second heat exchange section 121, and the third bend 124 is connected between the second end of the third heat exchange section 122 and the first heat exchange section 111.

[0275] The second bend 123 and the third bend 124 are used to connect the second heat exchange section 121 with the third heat exchange section 122 and the third heat exchange section 122 with the first heat exchange section 111, respectively. The second bend 123 is arc-shaped, that is, the second bend 123 extends along an arc, and the fluid flow directions at both ends of the second bend 123 have a certain angle. The third bend 124 is arc-shaped, that is, the third bend 124 extends along an arc, and the fluid flow directions at both ends of the third bend 124 have a certain angle.

[0276] Therefore, 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. Simultaneously, the arc-shaped second bend 123 and third bend 124 can reduce the flow resistance of the fluid and decrease 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.

[0277] In the above embodiments, 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, achieving a smooth transition connection between the third heat exchange section 122 and the second heat exchange section 121, and between the third heat exchange section 122 and the first heat exchange section 111. Therefore, the second bend 123 and the third bend 124 can reduce the flow resistance of the fluid in the second heat exchange section 12, 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 10. Furthermore, by providing the second bend 123 and the third bend 124, a circuitous arrangement of the first heat exchange channel 10 can be achieved. This allows for a larger heat exchange area and a more compact structure in the first heat exchange channel 10, which is more conducive to the miniaturization design of the battery 1000 and improves the volumetric energy density of the battery 1000.

[0278] According to some embodiments of this application, such as Figure 4 As shown, the second bend 123 can be in the shape of a quarter circle.

[0279] In other words, the second bend 123 can extend along a semi-circular arc. Specifically, the first bend 112 can extend along a quarter-circular arc away from the protrusion of 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 pipe materials, which can change the flow direction, 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. 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 perpendicularly to each other. This makes the layout of the second heat exchange section 12 more regular, and the flow channel of the second heat exchange section 12 can fit the layout of the battery assembly 200 more closely. Thus, the heat exchange effect of the second heat exchange section 12 on the battery assembly 200 can be increased.

[0280] In other embodiments, the bending degree of the second bending portion 123 can be adjusted as needed, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., and the embodiments of this application are not limited thereto.

[0281] In the above embodiment, by setting the second bend 123 to be a quarter-circle arc, 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 bend 123; at the same time, the arc shape can also reduce the resistance of fluid flow, allowing the fluid to flow smoothly in the second bend 123, effectively preventing the heat exchange efficiency from being reduced due to slow fluid flow.

[0282] According to some embodiments of this application, such as Figure 4 As shown, the third bend 124 is in the shape of a quarter circle.

[0283] In other words, the third bend 124 can extend along a semi-circular arc. Specifically, the third bend 124 can extend along a quarter-circular arc away from the protrusion of 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 pipe materials, which can change the flow direction, 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. This makes the layout of the first heat exchange channel 10 more regular and allows the first heat exchange channel 10 to fit the layout of the battery assembly 200 more closely, thereby increasing the heat exchange effect of the first heat exchange channel on the battery assembly 200.

[0284] In other embodiments, the bending degree of the third bending portion 124 can be adjusted as needed, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., and the embodiments of this application are not limited thereto.

[0285] In the above embodiment, by setting the third bend 124 to be a quarter-circle arc, 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 bend 124. At the same time, the arc-shaped third bend 124 can also reduce the resistance to fluid flow, allowing the fluid to flow smoothly within the third bend 124, effectively preventing the heat exchange efficiency from being reduced due to slow fluid flow.

[0286] According to some embodiments of this application, such as Figure 7 As shown, the second heat exchange section 12 may further include a fifth heat exchange section 127, which extends along the fourth side periphery of the first heat exchange section 11 and closes at least a portion of the opening of the U-shaped region 120 formed by the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125.

[0287] It is understandable that the fifth heat exchange section 127 can close part of the opening of the U-shaped region 120 or completely close the opening of the U-shaped region 120. Thus, the second heat exchange section 12 can basically cover the periphery of the battery module 200 and exchange heat with the periphery of the battery module 200. In this way, the second heat exchange section 12 can exchange heat with all or most of the periphery of the battery module 200. Therefore, the structure of the first heat exchange channel 10 can be set according to the actual arrangement of the battery module 200 or the heat exchange requirements, and the second heat exchange section 12 with the fifth heat exchange section 127 can be set to optimize the heat exchange structure of the first heat exchange channel 10 and improve the heat exchange efficiency.

[0288] In the above embodiment, by providing a fifth heat exchange section 127, the second heat exchange section 12 can exchange heat on the four sides of the battery module 200. In this way, the heat exchange on the four sides of the battery module 200 can be exchanged using only the second heat exchange section 12 of the first heat exchange channel 10. This improves the heat exchange effect on the four sides of the battery module 200 and enhances the temperature uniformity of the battery module 200.

[0289] According to some embodiments of this application, such as Figure 7 As shown, the fifth heat exchange section 127 is arranged opposite to the second heat exchange section 121. The fifth heat exchange section 127 is connected between the second end of the third heat exchange section 122 and the first heat exchange section 11, and is connected at an angle to the third heat exchange section 122 and the first heat exchange section 11.

[0290] It should be noted that, in the above embodiments, the second heat exchange section 121 is arranged on one side of the first heat exchange section 11 in the first direction (e.g., Figure 7 The fifth heat exchange section 127 is arranged opposite to the second heat exchange section 121 along the Y1 direction (on the side away from the origin of the coordinate system). That is, the fifth heat exchange section 127 is arranged on the other side of the first heat exchange section 11 in the first direction (e.g., the side of the first heat exchange section 111 away from the origin of the coordinate system). Figure 7 The plurality of first heat exchange sections 111 shown are located on the side of the first heat exchange section 11 near the origin along the Y1 direction, and the third heat exchange section 122 is arranged on one side of the first heat exchange section 11 in the second direction (e.g., Figure 7 The first heat exchange section 111 shown is located on the side of the coordinate origin along the X1 direction, and the two ends of the third heat exchange section 122 in the Y1 direction are respectively connected to the second heat exchange section 121 and the fifth heat exchange section 127.

[0291] 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 and the third heat exchange section 122 are connected at an angle greater than 0° and less than or equal to 180°. For example, the included 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 also connected to the first heat exchange section 11 at an angle. For example, the fifth heat exchange section 127 and the first heat exchange section 11 are connected at an angle greater than 0° and less than or equal to 180°. For example, the included angle between the fifth heat exchange section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0292] Furthermore, the fifth heat exchange section 127 and the third heat exchange section 122 can be connected by an arc segment, for example, the fifth heat exchange section 127 and the third heat exchange section 122 can be connected by a quarter circle arc.

[0293] Furthermore, the fifth heat exchange section 127 and the first heat exchange section 11 can be connected by an arc segment, for example, the fifth heat exchange section 127 and the first heat exchange section 11 can be connected by a semi-circular arc.

[0294] In the above embodiment, by arranging the fifth heat exchange section 127 opposite to the second heat exchange section 121 and connecting the fifth heat exchange section 127 between the third heat exchange section 122 and the first heat exchange segment 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.

[0295] In other specific embodiments, reference is made to... Figure 9 As shown, the fifth heat exchange section 127 is arranged opposite to the second heat exchange section 121. One end of the fifth heat exchange section 127 is connected to the end of the fourth heat exchange section 125 that is away from the second heat exchange section 121, and the fifth heat exchange section 127 and the fourth heat exchange section 125 are connected at an angle.

[0296] The fifth heat exchange section 127 is connected to the fourth heat exchange section 125 at an angle. For example, the fifth heat exchange section 127 and the fourth heat exchange section 125 are connected 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.

[0297] For example, refer to Figure 10The second heat exchange section 121 and the fifth heat exchange section 127 are respectively arranged on both sides of the first heat exchange section 11 in the X1 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 Y1 direction, the fifth heat exchange section 127 extends along the Y1 direction, the end of the fifth heat exchange section 127 near the origin of the coordinates in the Y1 direction is connected to the fourth heat exchange section 125, and the end of the fifth heat exchange section 127 away from the origin of the coordinates in the Y1 direction extends toward the third heat exchange section 13.

[0298] The fifth heat exchange section 127 and the fourth heat exchange section 125 can be connected by an arc, for example, the fifth heat exchange section 127 and the fourth heat exchange section 125 can be connected by a quarter arc.

[0299] In the above embodiment, by arranging the fifth heat exchange section 127 opposite to the second heat exchange section 121 and connecting the fifth heat exchange section 127 to the fourth heat exchange section 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.

[0300] In the above embodiments, by setting the fifth heat exchange section 127 to be arranged opposite to the second heat exchange section 121, and the fifth heat exchange section 127 is connected between the second end of the third heat exchange section 122 and the first heat exchange section 11, or one end of the fifth heat exchange section 127 is connected to the end of the fourth heat exchange section 125 away from the second heat exchange section 121, multiple heat exchange channels can be arranged, thereby meeting the heat exchange requirements of multiple batteries 1000.

[0301] According to some embodiments of this application, such as Figures 4-8 As shown, the first heat exchange channel 10 may further include: a third heat exchange section 13, the first heat exchange section 11 being connected between the third heat exchange section 13 and the second heat exchange section 12, and the third heat exchange section 13 being connected to the first heat exchange section 11 at an angle.

[0302] In other words, 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. The heat exchange fluid can flow from the second heat exchange section 12 through the first heat exchange section 11 to the third heat exchange section 13, or it can flow from the third heat exchange section 13 through the first heat exchange section 11 to the second heat exchange section 12.

[0303] The third heat exchange section 13 is connected to the first heat exchange section 11 and arranged at an angle greater than 0° and less than or equal to 180°. For example, the included 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.

[0304] In the above embodiments, by setting a 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.

[0305] According to some embodiments of this application, such as Figures 4-8 As shown, the first heat exchange section 11 includes a plurality of first heat exchange parts 111, and the plurality of first heat exchange parts 111 are in a first direction (e.g., Figure 4 The first heat exchange section 11 is connected sequentially in the Y1 direction shown; the third heat exchange section 13 is arranged on the side of the first heat exchange section 11 away from the third heat exchange section 122, and the third heat exchange section 13 is connected to the one of the plurality of first heat exchange sections 111 that is closest to the second heat exchange section 121 in the first direction.

[0306] Specifically, the third heat exchange section 13 is arranged adjacent to the fourth heat exchange section 125 and between the fourth heat exchange section 125 and the first heat exchange section 111. Thus, the third heat exchange section 13 is also arranged on the circumferential outer side of the first heat exchange section 11. In this way, the circumferential heat exchange area of ​​the first heat exchange channel 10 can be increased, and the heat exchange efficiency of the first heat exchange channel 10 at the circumferential position can be improved.

[0307] Furthermore, the third heat exchange section 13 and the fourth heat exchange section 125 can be arranged inside and outside on the same side of the first heat exchange section 11, which can further increase the heat exchange area at this location and improve the heat exchange efficiency. In addition, since 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 fluid flow direction, the third heat exchange section 13 and the fourth heat exchange section 125 can exchange heat with the same area of ​​the battery assembly 200, thereby improving the temperature uniformity of this area.

[0308] Furthermore, the third heat exchange section 13 is connected to the first heat exchange section 111 that is closest to the second heat exchange section 121 along the first direction. The first heat exchange sections 111 are sequentially connected along the first direction. The third heat exchange section 122 is connected to the first heat exchange section 111 that is furthest from the second heat exchange section 121 along the first direction. In this way, when exchanging heat with the battery assembly 200, the temperatures of the heat exchange fluid in the first heat exchange section 111 closest to the second heat exchange section 121 and the heat exchange fluid in the third heat exchange section 13, as well as the temperatures of the heat exchange fluid in the second heat exchange section 121 and the fourth heat exchange section 125, are respectively the highest and lowest temperatures in the first heat exchange channel 10, while the temperatures of the remaining parts are in the middle.

[0309] Due to the heat dissipation effect of the battery 1000, the edge temperature of the battery 1000 is lower than the middle temperature. Thus, the second heat exchange section 121 and the first heat exchange section 111, which is closest to the second heat exchange section 121, exchange heat in the same area. The third heat exchange section 13 and the fourth heat exchange section 125 exchange heat in the same area. This can further improve the temperature uniformity within the battery module 200, balance the temperature difference within the battery module 200, and thus improve the temperature uniformity of the battery module 200.

[0310] 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 plurality of first heat exchange sections 111 that is closest to the second heat exchange section 121 along the first direction, the heat exchange area can be increased, the temperature difference of the battery module 200 can be balanced, and the temperature uniformity of the battery module 200 can be improved.

[0311] According to some embodiments of this application, such as Figures 4-8 As shown, the third heat exchange section 13 extends along the first direction toward a direction away from the second heat exchange section 121, and the first heat exchange sections 111 all extend along the second direction, wherein the first direction and the second direction are arranged at an angle.

[0312] Specifically, one end of the third heat exchange section 122 is connected to the one of the plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121 along the first direction, and the other end of the third heat exchange section 122 extends toward the first heat exchange section 111 that is furthest from the second heat exchange section 121. At the same time, the fourth heat exchange section 125 also extends toward the first heat exchange section 111 that is furthest from the second heat exchange section 121.

[0313] Furthermore, the third heat exchange section 13 is arranged on the side of the first heat exchange section 11 away from the third heat exchange part 122. In this case, the third heat exchange section 13 and the fourth heat exchange part 125 are arranged on the same outer side of the first heat exchange part 111 in the circumferential direction. The third heat exchange section 13 and the fourth heat exchange part 125 are respectively located at both ends of the first flow channel in the fluid flow direction. When the third heat exchange section 13 and the fourth heat exchange part 125 exchange heat with the same area of ​​the battery assembly 200, the temperature difference at the edge of the battery assembly 200 can be balanced, thereby improving the temperature uniformity at the edge of the battery assembly 200.

[0314] In the above embodiment, by setting the third heat exchange section 13 to extend in 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 exchange heat with the battery assembly 200 together, the temperature difference at the edge of the battery assembly 200 can be balanced, and the temperature uniformity at the edge of the battery assembly 200 can be improved.

[0315] According to some embodiments of this application, such as Figures 4-8 As shown, the third heat exchange section 13 extends along the first direction to a position close to the one of the plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121.

[0316] 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 plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121, the length of the third heat exchange section 122 can be increased, the heat exchange area of ​​the third heat exchange section 122 can be increased, and the heat exchange effect of the first heat exchange channel 10 can be improved.

[0317] According to some embodiments of this application, such as Figures 4-8 As shown, the first heat exchange channel 10 may further include a fourth bend 14, which is arc-shaped and bends between the third heat exchange section 13 and the first heat exchange section 111.

[0318] The fourth bend 14 is arc-shaped, meaning it extends along an arc and the fluid flow directions at both ends of the fourth bend 14 form a certain angle. This allows the fourth bend 14 to change the fluid flow direction, thereby enabling the third heat exchange section 13 to extend along a predetermined direction. Simultaneously, the arc shape reduces fluid flow resistance and pressure drop, thereby increasing the fluid flow rate and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0319] In the above embodiment, by providing the fourth bend 14, the flow direction of the fluid between the third heat exchange section 13 and the first heat exchange section 111 can be changed. Simultaneously, the arc-shaped fourth bend 14 can reduce fluid flow resistance, decrease pressure drop, and increase fluid flow rate, further increasing the heat exchange efficiency of the first heat exchange channel 10. Furthermore, by providing the fourth bend 14, a circuitous arrangement of the first heat exchange channel 10 can be achieved. This allows for a larger heat exchange area and a more compact structure in the first heat exchange channel 10, which is more conducive to the miniaturization design of the battery 1000 and improves the volumetric energy density of the battery 1000.

[0320] According to some embodiments of this application, such as Figures 4-8 As shown, the fourth bend 14 is in the shape of a quarter circle.

[0321] In other words, the fourth bend 14 can extend along a semi-circular arc. Specifically, the fourth bend 14 can extend along a quarter-circular arc that protrudes towards the connection position of the second heat exchanger 121 and the fourth heat exchanger 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 pipe material, which can change the flow direction, so that the fluid flow direction changes by 90° after passing through the fourth bend 14. For example, the flow direction of the liquid can be changed from the X1 direction to the Y1 direction, or from the Y1 direction to the X1 direction.

[0322] 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, which is perpendicular to the second direction. 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 fit the layout of the battery assembly 200 more closely, thereby increasing the heat exchange effect of the first heat exchange channel on the battery assembly 200.

[0323] In other embodiments, the bending degree of the fourth bending portion 14 can be adjusted as needed, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., and the embodiments of this application are not limited thereto.

[0324] In the above embodiment, by setting the fourth bend 14 to be a quarter-circle arc, 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 of fluid flow, allowing the fluid to flow smoothly in the fourth bend 14, effectively preventing the heat exchange efficiency from being reduced due to slow fluid flow.

[0325] According to some embodiments of this application, such as Figures 4-8 As shown, the first heat exchange channel 10 may further include: a first inlet / outlet section 15, one end of the first inlet / outlet section 15 being connected at an angle to the third heat exchange section 13, and the other end of the first inlet / outlet section 15 forming the first inlet / outlet of the first heat exchange channel 10.

[0326] The first inlet / outlet is used for the inlet or outlet of the heat exchange fluid. When the first inlet / outlet is used for the inlet of the heat exchange fluid, the first inlet / outlet section 15 is used to transport the heat exchange fluid to the third heat exchange section 13. When the first inlet / outlet is used for the outlet of the heat exchange fluid, the first inlet / outlet section 15 is used to discharge the heat exchange fluid after heat exchange through the first inlet / outlet into the first heat exchange channel 10.

[0327] The first inlet / outlet section 15 and the third heat exchange section 13 are connected at an angle. For example, the first inlet / outlet section 15 and the third heat exchange section 13 are connected 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.

[0328] In the above embodiment, by setting the first inlet / outlet section 15, the external pipeline can be conveniently connected, so that the heat exchange medium can enter or exit the first heat exchange channel 10. At the same time, it can also guide the heat exchange fluid entering or exiting the first heat exchange channel 10, so that the heat exchange fluid can enter or exit quickly, thereby improving the heat exchange rate.

[0329] According to some embodiments of this application, such as Figures 4-8 As shown, the first inlet / outlet section 15 extends in the second direction away from the first heat exchange section 11, and the third heat exchange section 13 extends in the first direction.

[0330] It is understandable that there is a certain angle between the first inlet / outlet section 15 and the third heat exchange section 13. As a result, there will be a certain space on the side of the third heat exchange section 13 facing the first inlet / outlet section 15, which can facilitate the layout of other components within the battery 1000.

[0331] In the above embodiment, by setting the first inlet / outlet section 15 to extend away from the first heat exchange section 11 along the second direction, the pipe layout of the first heat exchange channel 10 can be made more reasonable and it is easier to connect with external pipes; at the same time, it can also make the first inlet / outlet away from the battery assembly 200, which helps to reduce the occurrence of damage to the battery assembly 200 due to water leakage from the first inlet / outlet.

[0332] According to some embodiments of this application, such as Figures 4-8 As shown, the first heat exchange channel 10 may further include a fifth bend 16, which is arc-shaped and bends between the third heat exchange section 13 and the first inlet / outlet section 15.

[0333] The fifth bend 16 is arc-shaped, meaning it extends along an arc and the fluid flow directions at both ends of the fifth bend 16 have a certain angle. This allows for the connection between the third heat exchange section 13 and the first inlet / outlet section 15, enabling the heat exchange fluid to flow smoothly from the third heat exchange section 13 to the first inlet / outlet section 15 or vice versa, thus facilitating liquid inlet or outlet at the first inlet / outlet section 15. Simultaneously, the arc shape reduces fluid flow resistance and pressure drop, thereby increasing the flow rate of the heat exchange fluid and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0334] In the above embodiment, by providing a fifth bend, the heat exchange fluid can flow smoothly from the third heat exchange section 13 to the first inlet / outlet section 15 or from the first inlet / outlet section 15 to the third heat exchange section 13, realizing liquid inlet or outlet of the first inlet / outlet section 15; at the same time, the arc shape of the fifth bend 16 can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0335] According to some embodiments of this application, such as Figures 4-8 As shown, the fifth bend 16 is arc-shaped, and the central angle corresponding to the fifth bend 16 is greater than or equal to 90° and less than 180°.

[0336] For example, the central angle corresponding to the fifth bend 16 can be 90°, 120°, 150° or 170°.

[0337] like Figure 4 As shown, the heat exchanger 100 includes two first heat exchange channels 10. The fifth bend 16 of the first heat exchange channel 10 located on the side away from the origin in the Y1 direction is in the shape of a quarter-circle arc. The third heat exchange section 13 is arranged perpendicularly to the first inlet / outlet section 15. Meanwhile, the first inlet / outlet section 15 of the lower first heat exchange channel 10 includes a first extension section and a second extension section. The first extension section connects 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 of the fifth bend 16 is greater than 90° and less than 135°.

[0338] In the above embodiment, by setting the fifth bend 16 to be arc-shaped, the resistance to fluid flow can be further reduced, allowing the fluid to flow smoothly within the fifth bend 16, effectively preventing the heat exchange efficiency from decreasing due to slow fluid flow. At the same time, the central angle corresponding to the fifth bend 16 is greater than or equal to 90° and less than 180°, which can also form a certain space on the side of the third heat exchange section 13 facing the first inlet / outlet section 15, thereby facilitating the arrangement of other components within the battery 1000 and improving the layout rationality of the battery 1000.

[0339] According to some embodiments of this application, such as Figures 4-8 As shown, the second heat exchange section 12 further includes a sixth bend 126, which is connected between the fourth heat exchange section 125 and the second heat exchange section 121.

[0340] The sixth bend 126 is arc-shaped, meaning it extends along an arc and the fluid flow directions at both ends of the sixth bend 126 form a certain angle. This allows the sixth bend 126 to change the flow direction of the heat exchange fluid, thereby enabling the second heat exchange section 121 and the fourth heat exchange section 125 to extend along a predetermined direction. Simultaneously, the arc-shaped sixth bend 126 reduces fluid flow resistance and pressure drop, thereby increasing the flow rate of the heat exchange fluid and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0341] In the above embodiments, by providing the sixth bend 126, the flow direction of the fluid within the first heat exchange channel 10 can be changed, achieving a circuitous arrangement of the first heat exchange channel 10. This increases the heat exchange area of ​​the first heat exchange channel 10 and improves its heat exchange efficiency. Simultaneously, the arc shape of the sixth bend 126 reduces fluid flow resistance and pressure drop, thereby increasing the flow rate of the heat exchange fluid and further enhancing the heat exchange efficiency of the first heat exchange channel 10. Furthermore, by providing the sixth bend, the second heat exchange section 12 can form a U-shaped region 120, thus surrounding the first heat exchange section. This increases the compactness of the arrangement of the first heat exchange channel 10, achieving a miniaturized structure and contributing to improved battery volumetric energy density.

[0342] According to some embodiments of this application, such as Figures 4-8 As shown, the sixth bend 126 is in the shape of a quarter circle.

[0343] In other words, the sixth bend 126 can extend along a semi-circular arc, specifically, it can extend along a quarter-circular arc away from the protrusion of 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 pipe materials, which can change the flow direction, causing the fluid flow direction to change by 90° after passing through the sixth bend 126. For example, the flow direction can be changed from X1 to Y1, or from Y1 to X1. The sixth bend 126 connects the second heat exchange section 121 and the fourth heat exchange section 125, which are arranged perpendicularly. This makes the layout of the second heat exchange section 12 more regular, allowing it to better fit 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.

[0344] In other embodiments, the bending degree of the sixth bend 126 can be adjusted as needed, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., and the embodiments of this application are not limited thereto.

[0345] In the above embodiment, by setting the sixth bend 126 to be a quarter-circle arc, the flow direction of the fluid can be changed from the original flow direction to a direction perpendicular to the original flow direction after passing through the sixth bend 126. At the same time, the arc shape can further reduce the resistance to fluid flow, allowing the fluid to flow smoothly within the sixth bend 126, effectively preventing the heat exchange efficiency from being reduced due to slow fluid flow.

[0346] According to some embodiments of this application, such as Figures 4-8 As shown, the first heat exchange channel 10 may further include a second inlet / outlet section 17, one end of which is connected at an angle to the fourth heat exchange section 125, and the other end of which forms the second inlet / outlet of the first heat exchange channel 10.

[0347] The second inlet / outlet is used for the inlet or outlet of the heat exchange fluid. When the second inlet / outlet is used for the inlet of the heat exchange fluid, the second inlet / outlet section 17 is used to transport the heat exchange fluid to the third heat exchange section 13; when the second inlet / outlet is used for the outlet of the heat exchange fluid, the second inlet / outlet section 17 is used to discharge the heat exchanged fluid through the second inlet / outlet into the first heat exchange channel 10.

[0348] The second inlet / outlet section 17 is connected to the fourth heat exchange section 125 at an angle. For example, the second inlet / outlet section 17 and the fourth heat exchange section 125 are connected 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 section 125 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0349] In the above embodiment, by setting the second inlet / outlet section 17, it is beneficial to the external pipeline, so that the heat exchange medium can enter or exit 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 exiting the first heat exchange channel 10, so that the heat exchange fluid can enter or exit quickly, thereby improving the heat exchange rate.

[0350] According to some embodiments of this application, such as Figures 4-8 As shown, the second inlet / outlet section 17 extends along the second direction away from the first heat exchange section 11, and the fourth heat exchange section 125 extends along the first direction (e.g., ...). Figure 4 The Y1 direction shown is extended, and the first direction and the second direction are set at an angle.

[0351] It is understandable that a certain angle is formed between the second inlet / outlet section 17 and the fourth heat exchange section 125. As a result, a certain space is formed on the side of the fourth heat exchange section 125 facing the second inlet / outlet section 17, which can facilitate the layout of other components (such as high voltage box structures) within the battery 1000.

[0352] In the above embodiment, by setting the second inlet / outlet section 17 to extend away from the first heat exchange section 11 along the second direction, the pipe layout of the first heat exchange channel 10 can be made more reasonable and it is easier to connect to external pipes; at the same time, the second inlet / outlet can be moved away from the battery assembly 200, which helps to reduce the occurrence of damage to the battery assembly 200 due to water leakage at the second inlet / outlet.

[0353] According to some embodiments of this application, such as Figures 4-8 As shown, the first heat exchange channel 10 further includes a seventh bend 18, which is arc-shaped and bends between the fourth heat exchange section 125 and the second inlet / outlet section 17.

[0354] The seventh bend 18 is arc-shaped, meaning it has a certain included angle. This bend connects the fourth heat exchange section 125 and the second inlet / outlet section 17, enabling communication between them. This allows the heat exchange fluid to flow smoothly from the fourth heat exchange section 125 to the second inlet / outlet section 17 or vice versa, facilitating liquid inlet or outlet at the second inlet / outlet section 17. Simultaneously, the arc shape reduces fluid flow resistance and pressure drop, thereby increasing the flow rate of the heat exchange fluid and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0355] In the above embodiment, by providing the seventh bend, the heat exchange fluid can flow smoothly from the fourth heat exchange section 125 to the second inlet / outlet section 17 or from the second inlet / outlet section 17 to the fourth heat exchange section 125, realizing liquid inlet or outlet of the second inlet / 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.

[0356] According to some embodiments of this application, such as Figures 4-8 As shown, the seventh bend 18 is arc-shaped, and the central angle corresponding to the seventh bend 18 is greater than or equal to 90° and less than 180°.

[0357] For example, the central angle corresponding to the seventh bend 18 can be 90°, 120°, 150° or 170°.

[0358] like Figure 4As shown, the heat exchanger 100 includes two first heat exchange channels 10. The seventh bend 18 of the first heat exchange channel 10 located on the side away from the origin in the Y1 direction is in the shape of a quarter-circle arc. The fourth heat exchange section 125 is arranged perpendicularly to the second inlet / outlet section 17. Meanwhile, the second inlet / outlet section 17 of the lower first heat exchange channel 10 includes a third extension section and a fourth extension section. The third extension section connects the fourth extension section and the fourth heat exchange section 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 section 125 are connected by the seventh bend 18. The central angle corresponding to the arc of the seventh bend 18 is greater than 90° and less than 135°.

[0359] In the above embodiment, by setting the seventh bend 18 to be arc-shaped, the resistance to fluid flow can be further reduced, allowing the fluid to flow smoothly within the seventh bend 18, effectively preventing the heat exchange efficiency from decreasing due to slow fluid flow. At the same time, the central angle corresponding to the seventh bend 18 is greater than or equal to 90° and less than 180°, which can also form a clearance space on the side of the fourth heat exchange section 125 facing the second inlet / outlet section 17, thereby facilitating the layout of other components within the battery 1000 and improving the rationality of the battery 1000 layout.

[0360] According to some embodiments of this application, the first heat exchange section 11 is connected downstream of the second heat exchange section 12 along the fluid flow direction.

[0361] In other words, the heat exchange fluid first flows through the second heat exchange section 12 and then flows into the first heat exchange section 11. The second heat exchange section 12 is arranged around the first heat exchange section 11. When the first heat exchange channel 10 exchanges heat with the battery module 200, the peripheral temperature of the battery module 200 dissipates heat quickly, especially under low temperature heating conditions. The high temperature heat exchange fluid starts to exchange heat from the second heat exchange section 12, which allows the first heat exchange channel 10 to preferentially exchange heat on the outer circumference of the battery module 200. This helps to improve the temperature difference between the inside and outside of the battery module 200 and, to a certain extent, improve the service life of the battery 1000.

[0362] In the above embodiment, by setting the first heat exchange section 11 to be connected 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 circumferential side of the battery 1000, which is beneficial to improve the temperature difference of the battery 1000 in different environments and improve the service life of the battery 1000 to a certain extent.

[0363] According to some embodiments of this application, the heat exchanger 100 is configured such that when heating the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected downstream of the second heat exchange section 12 along the fluid flow direction; and when cooling the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected upstream of the second heat exchange section 12 along the fluid flow direction.

[0364] Specifically, when heating the battery assembly 200 of the battery 1000, the temperature of the heat exchange fluid flowing inside the heat exchanger 100 is higher than the operating temperature of the battery 1000. The heat exchanger 100 heats the battery assembly 200. 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.

[0365] Because the high-temperature fluid first enters the second heat exchange section 12 located around 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 module 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 module 200. Since the battery cells 2011 on the periphery of the battery 1000 dissipate more heat to the external environment, their temperature drops more. The heat exchange fluid first heats the battery cells 2011 on the periphery of the battery 1000. The higher temperature of the heat exchange fluid can raise 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, thus meeting their heating needs. The battery cells 2011 in the middle of the battery module 200 have a smaller contact area with the external environment, resulting in less heat loss. The lower-temperature heat exchange fluid flowing in the first heat exchange section 11 can effectively meet the heating needs of the battery cell 2011 by combining with the heat generated by the battery cell 2011 itself. As a result, the heating effect of the battery cells 2011 on the periphery of the battery module 200 and the battery cells 2011 in the middle of the battery module 200 is basically the same. Consequently, the temperature of the battery cells 2011 on the periphery of the battery module 200 and the battery cells 2011 in the middle of the battery module 200 is more consistent after heating, making the temperature distribution inside the battery 1000 more uniform.

[0366] When cooling the battery assembly 200 of the battery 1000, the temperature of the heat exchange fluid flowing in the heat exchanger 100 is lower than the operating temperature of the battery 1000. The heat exchanger 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.

[0367] When the battery 1000 is cooled down, 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 part of the battery assembly 200 to the edge of the battery assembly 200 and exchanges heat. In this process, 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 lower-temperature heat exchange fluid in the first heat exchange section 11 can better meet the heat dissipation needs of the battery cells 2011 in the middle of the battery 1000. At the same time, since the battery cells 2011 at the periphery of the battery assembly 200 can directly face the external environment for natural heat dissipation, 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 needs of the peripheral battery cells 2011. As a result, the cooling effect of the battery cells 2011 at the periphery of the battery 1000 and the battery cells 2011 in the middle of the battery 1000 is roughly the same. This makes the temperatures of the battery cells 2011 at the periphery of the battery 1000 and the battery cells 2011 in the middle of the battery 1000 more consistent after cooling, reducing the temperature difference between the inside and outside of the battery assembly 200 and making the temperature distribution inside the battery 1000 more uniform.

[0368] In the above embodiment, by configuring the heat exchanger 100 such that when heating the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected downstream of the second heat exchange section 12 along the fluid flow direction; and when cooling the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected upstream of the second heat exchange section 12 along the fluid flow direction, the heat exchange effect on the battery 1000 can be further improved, and the temperature uniformity of the battery assembly 200 can be enhanced.

[0369] According to some embodiments of this application, such as Figures 4-10 As shown, the heat exchanger 100 has one or more heat exchange channels. When there are multiple heat exchange channels, 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 the multiple heat exchange channels are arranged in parallel.

[0370] It is understandable that the number of heat exchange channels in the heat exchanger 100 can be one, two, three, four or more. When there are multiple heat exchange channels, one of the multiple heat exchange channels can be formed as the first heat exchange channel 10, or two, three, four or more heat exchange channels can be formed as the first heat exchange channel 10, or multiple heat exchange channels can all be formed as the first heat exchange channel 10.

[0371] In some specific embodiments, multiple heat exchange channels are arranged at intervals along a first direction, for example... Figure 4As shown, the heat exchanger 100 may include two heat exchange channels, the two first heat exchange channels 10 being arranged at intervals along a first direction. Further, both heat exchange channels may be formed as first heat exchange channels 10. Alternatively, the heat exchanger 100 may include three heat exchange channels, the three heat exchange channels being arranged sequentially along a first direction. Further, two of the three heat exchange channels are first heat exchange channels 10, and one is a second heat exchange channel 30, the second heat exchange channel 30 being arranged between the two first heat exchange channels 10.

[0372] In other embodiments, multiple heat exchange channels are arranged around each other. For example Figure 9 As shown, the heat exchanger 100 has two heat exchange channels arranged in parallel, which are arranged around each other. Furthermore, both heat exchange channels can be formed as the first heat exchange channel 10. For example... Figure 10 As shown, the heat exchanger 100 has three heat exchange channels arranged in parallel, the three heat exchange channels are arranged around each other, and each of the three heat exchange channels can be formed as the first heat exchange channel.

[0373] Multiple heat exchange channels are arranged in parallel, meaning that the inlets of multiple heat exchange channels are connected to the same liquid supply pipe, and the outlets of multiple heat exchange channels are connected to the same liquid outlet pipe.

[0374] In the above embodiments, by setting the heat exchanger 100 to have one or more heat exchange channels, and the multiple heat exchange channels are arranged at intervals or around each other along the first direction, the diversity of heat exchange channels can be increased, thereby improving the adaptability of the heat exchanger 100 and enabling it to meet the needs of different batteries 1000, thereby improving the market competitiveness of the battery 1000; at the same time, the parallel arrangement of multiple heat exchange channels can enable multiple heat exchange channels to exchange heat simultaneously, thereby reducing the heat exchange time of the heat exchanger 100 and improving the heat exchange efficiency.

[0375] According to some embodiments of this application, such as Figure 4 As shown, multiple heat exchange channels are arranged at intervals along the first direction, and the two heat exchange channels located at both ends of the first direction are both first heat exchange channels 10; and the two first heat exchange channels 10 are arranged symmetrically about the center line of the heat exchanger 100 along the second direction, wherein the second direction is set at an angle to the first direction.

[0376] It is understandable that arranging the second heat exchange section 12 of the first heat exchange channel 10 around the periphery of the battery module 200 can improve the uniformity of the temperature inside and outside the battery module 200. Therefore, forming both heat exchange channels at both ends of the first direction as the first heat exchange channel 10 can make the temperature uniformity of the battery cells 2011 at both ends of the battery module 200 in the first direction better, and achieve overall temperature uniformity of the battery module 200.

[0377] Furthermore, the fluid flow direction and the inlet and outlet at both ends of the two first heat exchange channels 10 are arranged symmetrically, so that the two first heat exchange channels 10 can simultaneously exchange heat at both ends of the battery assembly 200 in the first direction, resulting in better temperature uniformity.

[0378] The phrase "the second direction is set at an angle to the first direction" is intended to illustrate that the first and second directions can be arranged perpendicularly or they can be arranged in a non-perpendicular manner that only intersects each other. For example, the first and second directions can be arranged at an angle of 30°, 60° or 80°.

[0379] In the above embodiment, by setting two symmetrically arranged first heat exchange channels 10, liquid can be introduced from both sides at the same time, the liquid flow rate can be increased, the length of a single heat exchange channel can be shortened, the pressure drop in a single heat exchange channel can be reduced, and thus the heat exchange efficiency can be improved.

[0380] According to some embodiments of this application, such as Figure 4 As shown, multiple heat exchange channels are arranged symmetrically about the centerline of the heat exchanger 100 along the second direction.

[0381] The multiple heat exchange channels are symmetrically arranged in terms of flow direction and inlet / outlet at both ends, which can divide the heat exchanger 100 into two symmetrically distributed parts. In this way, during the heat exchange process, the fluid distribution of the two symmetrical parts of the heat exchanger 100 is consistent, thereby improving the temperature consistency of the heat exchange areas corresponding to the two parts of the battery module 200 and the heat exchanger 100, and further improving the temperature uniformity of the battery module 200.

[0382] In the above embodiment, by setting multiple heat exchange channels symmetrically arranged about the center line of the heat exchanger 100 along the second direction, the multiple heat exchange channels can exchange heat with the battery module 200 simultaneously, thereby improving the heat exchange efficiency. At the same time, it can also improve the temperature consistency of the two heat exchange areas of the symmetrically arranged battery module 200 and heat exchanger 100, thereby further improving the temperature uniformity of the battery module 200.

[0383] In some specific embodiments of this application, multiple heat exchange channels are arranged asymmetrically about the centerline of the heat exchanger 100 along the second direction. In this way, the multiple heat exchange channels can be designed according to the actual situation of the battery module 200, so that the heat exchanger 100 can meet the heat exchange requirements of the battery module 200 and further ensure the heat exchange effect of the battery module 200.

[0384] According to some embodiments of this application, such as Figure 8 As shown, the plurality of heat exchange channels also includes at least one second heat exchange channel 30, which is disposed between 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.

[0385] Specifically, the second heat exchange channel 30 is located between the two first heat exchange channels 10 and is mainly used for heat exchange with the middle position of the battery assembly 200. The temperature of the battery cell 201 located in the middle position is relatively uniform. 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 situation of the battery 1000.

[0386] 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 module 200.

[0387] In the above embodiments, by providing at least one second heat exchange channel 30, the diversity of heat exchange channel arrangement can be increased, enabling the heat exchanger 100 to better exchange heat with the battery assembly 200 and improve the heat exchange effect of the heat exchanger 100.

[0388] According to some embodiments of this application, such as Figure 8 As shown, the second heat exchange channel 30 includes a plurality of fourth heat exchange sections 31, which are connected sequentially along the fluid flow direction. 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, with the first direction and the second direction forming an angle.

[0389] Specifically, multiple fourth heat exchange sections 31 connected in sequence can form a U-shaped heat exchange channel or an S-shaped heat exchange channel.

[0390] For example, the number of fourth heat exchange sections 31 can be two, three or more, and the number of fourth heat exchange sections 31 can be designed according to the size of the battery assembly 200.

[0391] In the above embodiments, by setting the second heat exchange channel 30 to include a plurality of sequentially connected fourth heat exchange sections 31, the structural complexity of the second heat exchange channel 30 can be reduced, thereby reducing the production cost of the second heat exchange channel 30 and thus reducing the production cost of the heat exchange component 100.

[0392] According to some embodiments of this application, such as Figure 9As shown, the heat exchanger 100 has multiple heat exchange channels, including a first heat exchange channel 10 and at least one third heat exchange channel 40. The third heat exchange channel 40 is bent within the U-shaped region 120 of the first heat exchange channel 10, and the first heat exchange channel 10 and the third heat exchange channel 40 are bent in the same plane. The bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 may be the same or different.

[0393] It is understandable that the bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 may be the same or different. The number of third heat exchange channels 40 may be one or more; for example, the number of third heat exchange channels 40 may be one, two, three or more.

[0394] For example Figure 9 As shown, the multiple heat exchange channels include a first heat exchange channel 10 and a third heat exchange channel 40. The third heat exchange channel 40 has the same structure as the first heat exchange channel 10, and the third heat exchange channel 40 is bent within the U-shaped region 120 of the first heat exchange channel 10.

[0395] Specifically, both the first heat exchange channel 10 and the third heat exchange channel 40 include a first heat exchange section 111, a second heat exchange section 121, a third heat exchange section 122, and a fourth heat exchange section 125. The multiple first heat exchange sections 111, 122, and 125 of the first and third heat exchange channels 10 and 40 extend along the X1 direction, while the second heat exchange section 121 extends along the Y1 direction. The fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 are sequentially bent and connected to form a U-shaped structure with its opening facing the side away from the origin in the X1 direction. Multiple first heat exchange sections 111 are arranged within the U-shaped region 120, spaced apart along the Y1 direction, and sequentially bent and connected.

[0396] In this configuration, the third heat exchange section 122 of the first heat exchange channel 10 is arranged on the side of the plurality of first heat exchange sections 111 furthest from the origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the plurality of first heat exchange sections 111 closest to the origin in the Y1 direction. The third heat exchange channel 40 is connected to the first heat exchange section 111 furthest from the 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 plurality of first heat exchange sections 111 closest to the origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the plurality of first heat exchange sections 111 furthest from the 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 closest to the origin in the Y1 direction. The third heat exchange channel 40 is located between the fourth heat exchange section 125 and the plurality of first heat exchange sections 111 of the first heat exchange channel 10.

[0397] In addition, the first heat exchange channel 10 and the third heat exchange channel 40 also include a first inlet / outlet section 15 and a second inlet / outlet section 17. The first inlet / outlet section 15 of the first heat exchange channel 10 is connected to the fourth heat exchange section 125, and the second inlet / outlet section 17 is connected to the first heat exchange section 111, which is closest to the origin in the Y1 direction. The first inlet / outlet section 15 of the third heat exchange channel 40 is connected to the first heat exchange section 111, which is farthest from the origin in the Y1 direction, and the second inlet / outlet section 17 is connected to the fourth heat exchange section 125.

[0398] In the above embodiments, by setting multiple heat exchange channels, the diversity of heat exchange channels can be increased, and the arrangement of 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.

[0399] According to some embodiments of this application, such as Figure 10 As shown, the third heat exchange channel 40 includes a U-shaped region 120 with the same structure as the first heat exchange channel 10, and at least a portion of the first heat exchange section 11 of the first heat exchange channel 10 is disposed within the U-shaped region 120 of the third heat exchange channel 40.

[0400] It is understandable that the first heat exchange channel 10 may be partially located within the U-shaped region 120 of the third heat exchange channel 40, or it may be entirely located within the U-shaped region 120 of the third heat exchange channel 40.

[0401] For example Figure 10 As shown, the multiple heat exchange channels include a first heat exchange channel 10 and two third heat exchange channels 40, and the two third heat exchange channels 40 have the same structure as the first heat exchange channel 10.

[0402] Specifically, the first heat exchange channel 10 and the two third heat exchange channels 40 each include a first heat exchange section 111, a second heat exchange section 121, a third heat exchange section 122, and a fourth heat exchange section 125. The fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 of any one of the first heat exchange channel 10 and the two third heat exchange channels 40 are sequentially bent and connected to form a U-shaped structure with the opening facing away from the origin in the X1 direction. The first heat exchange section 111 includes multiple sections, which are arranged within the U-shaped region 120. These multiple sections extend linearly along the X1 direction and are spaced apart and sequentially bent and connected along the Y1 direction. The second heat exchange section 121 extends along the Y1 direction, and the third heat exchange section 122 and the fourth heat exchange section 125 both extend along the X1 direction.

[0403] The third heat exchange section 122 of the first heat exchange channel 10 is located on the side of the plurality of first heat exchange sections 111 that is far from the origin in the Y1 direction, and is connected to the first heat exchange section 111 that is farthest from the origin in the Y1 direction. The fourth heat exchange section 125 is located on the side of the plurality of first heat exchange sections 111 that is close to the origin in the Y1 direction.

[0404] The third heat exchange section 122 of the third heat exchange channel 40a is located on the side of the plurality of first heat exchange sections 111 that is furthest from the origin in the Y1 direction, and is connected to the first heat exchange section 111 that is furthest from the origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40a and the first heat exchange section 111 that is furthest from the origin in the Y1 direction of the third heat exchange channel 40a are located between the third heat exchange section 122 of the first heat exchange channel 10 and the plurality of first heat exchange sections 111 of the first heat exchange channel 10. The plurality of first heat exchange sections 111 of the first heat exchange channel 10 are located between the first heat exchange section 111 that is furthest from the origin in the Y1 direction of the third heat exchange channel 40a and the second first heat exchange section 111 on the side of the third heat exchange channel 40a that is furthest from the origin in the Y1 direction.

[0405] The third heat exchange channel 40b is located between the fourth heat exchange section 125 of the third heat exchange channel 40a and the plurality of first heat exchange sections 111 of the third heat exchange channel 40a. The fourth heat exchange section 125 of the third heat exchange channel 40b is located on the side of the plurality of first heat exchange sections 111 of the third heat exchange channel 40b that is away from the origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40b is connected to the first heat exchange section 111 of the third heat exchange channel 40b that is closest to the origin in the Y1 direction.

[0406] In addition, the first heat exchange channel 10 and the two third heat exchange channels 40 also include a first inlet / outlet section 15 and a second inlet / outlet section 17, wherein the first inlet / outlet section 15 and the second inlet / outlet section 17 are respectively connected to the fourth heat exchange section 125 and the first heat exchange section 111.

[0407] In the above embodiment, by providing a third heat exchange channel 40 including a U-shaped region 120 with the same structure as the first heat exchange channel 10, and at least a portion of the first heat exchange section 11 of the first heat exchange channel 10 being disposed within the U-shaped region 120 of the third heat exchange channel 40, the first heat exchange channel 10 and at least a portion of the third heat exchange channel 40 can be arranged around each other. In this way, the arrangement of the heat exchange channels can be arranged according to the heat exchange requirements of each part 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.

[0408] According to some embodiments of this application, such as Figures 9-10As shown, the U-shaped region 120 of the second heat exchange section 12 of the first heat exchange channel 10 is located in the outermost circumferential direction of the heat exchange element 100.

[0409] In other words, the U-shaped region 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 region 120 of the first heat exchange channel 10 can be used to exchange heat with the outer periphery of the battery module 200, thereby improving the heat exchange effect on the periphery of the battery module 200.

[0410] In the above embodiment, by setting the U-shaped region 120 of the second heat exchange section 12 of the first heat exchange channel 10 to be located in the outermost circumferential direction of the heat exchange element 100, the second heat exchange section 12 can exchange heat in the outer circumferential direction of the battery 1000, which is beneficial to improve the temperature difference of the battery 1000 in different environments and improve the service life of the battery 1000 to a certain extent.

[0411] According to some embodiments of this application, the heat exchanger 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 a first direction, and each heat exchange tube defines a heat exchange flow channel on its inner side.

[0412] 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 pack 200.

[0413] Specifically, a heat exchange channel is defined within the heat exchange tube for the flow of heat exchange fluid. The shape of the heat exchange tube can be varied, such as a circular tube or a flat tube; similarly, the shape of the heat exchange channel defined by the heat exchange tube can also be varied, such as a U-shaped heat exchange channel or a loop-shaped heat exchange channel.

[0414] Furthermore, multiple heat exchange tubes are arranged in parallel. For example, the inlet ends of multiple heat exchange tubes are connected to the distribution chamber of the collector 20, and the outlet ends of multiple heat exchange tubes are all connected to the confluence chamber of the collector 20.

[0415] Multiple heat exchange tubes can be arranged sequentially along a first direction, for example, multiple heat exchange tubes can be arranged at intervals along the Y1 direction. Of course, multiple heat exchange tubes can also be arranged around each other, and further, multiple heat exchange tubes can be arranged around each other in the same plane.

[0416] In the above embodiments, by including at least one heat exchange tube in the heat exchanger 100, not only can the manufacturing complexity of the heat exchanger 100 be reduced, thereby increasing the production rate of the heat exchanger 100, but the fluid pressure drop within a single heat exchange tube can also be reduced, thus improving heat exchange efficiency. Furthermore, the tubular structure is simpler, lower in cost, and easier to process than the plate structure.

[0417] According to some embodiments of this application, the heat exchange tube can be formed by bending a single tube.

[0418] Among them, single tube bending and forming refers to the process where a heat exchange tube can be formed by bending a single straight tube multiple times through processing techniques such as pressing and rolling. For example, a single straight tube can be bent at multiple preset positions to form a V-shape, U-shape, etc. at the bending positions. The bending shape of the single tube can be designed according to the actual situation.

[0419] In the above embodiments, by setting the heat exchange tube to be bent from a single tube, the number of weld points of the heat exchange component 100 can be reduced, thereby reducing the risk of leakage of the heat exchange component 100 and improving the reliability of the heat exchange component 100. At the same time, the operation process of bending a single tube is simpler than the manufacturing process of a plate structure, thereby significantly reducing the cost of the heat exchange component 100.

[0420] According to some embodiments of this application, the heat exchange tube is curved at the bend position.

[0421] 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 bend 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 component 100.

[0422] In the above embodiments, by setting the heat exchange tube to bend in an arc at the bend 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.

[0423] According to some embodiments of this application, such as Figure 11 As shown, the bending angle of the heat exchange tube at the bend position is less than 180°.

[0424] For example, the bending angle of the heat exchange tube at the bend can be 30°, 60°, 90°, 120°, 150° or 179°.

[0425] In the above embodiments, 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.

[0426] According to some embodiments of this application, such as Figure 11 As shown, the heat exchange tube is bent in an arc at the bend position, and the ratio of the bending radius r of the heat exchange tube along the center line of the length direction to the width d of the heat exchange tube is greater than or equal to 0.6.

[0427] For example, 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 can be 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 and above.

[0428] It should be noted that when heat exchange tubes are bent, under the action of internal pressure stress, the circular cross-section tends to become elliptical, generating a minor axis and a major axis. The tube bending machine will generate additional stress at the major axis. The greater the ellipticity, that is, the larger the bending angle and the smaller the ratio of the bending radius to the width of the heat exchange tube, the greater this additional stress will be, and it may even form a high-stress zone, resulting in local plastic deformation. After reaching a certain value, it will lead to a reduction in the load-bearing capacity of the bent tube and its failure.

[0429] In the above embodiments, by setting the ratio of the bending radius r of the heat exchange tube along the center line 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 is less likely to break during bending and stretching, 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.

[0430] According to some embodiments of this 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.

[0431] 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 and above.

[0432] In the above embodiments, 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.

[0433] According to some embodiments of this application, the wall thickness of the heat exchange tube at the bend position is greater than or equal to 0.2 mm.

[0434] For example, the wall thickness of the heat exchange tube at the bend can be 0.2 mm, 0.3 mm, 0.4 mm or more.

[0435] In the above embodiments, 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 is not too thin, which helps to ensure 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 improving the reliability of the heat exchange tube.

[0436] According to some embodiments of this application, at the bend of the heat exchange tube, the bend reduction rate of the heat exchange tube wall thickness is less than or equal to 50%.

[0437] The bending thinning rate is equal to the thickness lost due to the extension of the heat exchange tube divided by the original thickness multiplied by 100%.

[0438] For example, the wall thickness reduction rate of the heat exchange tube by bending can be 2%, 5%, 10%, 20%, 30%, 40%, or 50%.

[0439] In the above embodiments, by setting the bending thinning rate of the heat exchange tube to be less than or equal to 50%, the wall thickness loss of the heat exchange tube can be kept within a preset range. This ensures that the wall thickness of the heat exchange tube at the bending position is not too thin, which helps to ensure the strength of the heat exchange tube at the bending position and effectively reduces the risk of leakage at the bending position of the heat exchange tube, thereby improving the reliability of the heat exchange tube.

[0440] According to some embodiments of this application, the bending thinning rate of the heat exchange tube is less than or equal to 30%.

[0441] For example, the wall thickness reduction rate of the heat exchange tube by bending can be 2%, 5%, 10%, 20%, or 30%.

[0442] In the above embodiments, by setting the bending thinning rate of the heat exchange tube to be less than or equal to 30%, the wall thickness loss after bending of the heat exchange tube can be further reduced, and the strength of the bending position of the heat exchange tube can be further improved.

[0443] According to some embodiments of this application, the heat exchange tube can be a flat tube or a harmonica tube.

[0444] 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 whose cross-section along its extension direction is non-circular, such as having an elliptical or rectangular cross-section; a harmonica tube is a type of flat tube.

[0445] Specifically, the flat tube has flat upper and lower surfaces and a large contact area, which can increase the heat transfer area of ​​the heat exchanger 100 and thus increase the heat exchange effect of the heat exchanger 100. At the same time, the flat tube is relatively light in weight while having the same bending and torsional strength. Therefore, using the flat tube as the heat exchange tube can also reduce the overall weight of the heat exchanger 100 and thus increase the energy density of the battery 1000.

[0446] Furthermore, the flat tube can have a single heat exchange channel inside, or it can have multiple heat exchange channels formed by internal partitions. For example, both the flat tube and the harmonica tube can have partition ribs inside, which can extend along the length of the flat tube or harmonica tube and divide the heat exchange channel inside the flat tube or harmonica tube into multiple sub-channels.

[0447] In the above embodiments, 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.

[0448] According to some embodiments of this application, such as Figure 11 As shown, the wall thickness m of the heat exchange tube can be 0.2mm-3mm.

[0449] For example, the wall thickness m of the heat exchange tube can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm, 2.5mm or 3mm.

[0450] In the above embodiments, by setting the wall thickness m of the heat exchange tube to 0.2mm-3mm, the heat exchange tube has a suitable thickness, ensuring that the wall thickness is not too small, thereby guaranteeing the strength of the heat exchange tube and effectively reducing the risk of damage to the heat exchange tube; it also ensures that the wall thickness of the heat exchange tube is not too large, which helps to reduce the overall weight of the heat exchange tube, thereby reducing the overall weight of the battery 1000 and achieving the lightweighting of the battery 1000.

[0451] According to some embodiments of this application, such as Figure 11 As shown, the wall thickness m of the heat exchange tube can be 0.5mm-1.2mm.

[0452] For example, the wall thickness m of the heat exchange tube can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm or 1.2mm.

[0453] In the above embodiments, by setting the wall thickness m of the heat exchange tube to 0.5mm-1.2mm, the strength of the heat exchange tube can be guaranteed while the overall weight of the heat exchange tube can be reduced, thus achieving the lightweighting of the battery 1000.

[0454] According to some embodiments of this application, the heat exchanger 100 may include a heat exchange plate, and the heat exchange channels may be formed on the heat exchange plate by stamping.

[0455] Stamping is a forming process that uses a press and dies to apply external force to sheet metal, strip, tube, and profiles, causing plastic deformation or separation to obtain workpieces (stamped parts) of the desired shape and size. In this way, the heat exchanger 100 does not require assembly, reducing the number of parts in the heat exchanger 100, reducing the assembly steps of the battery 1000, and increasing the assembly rate of the battery 1000.

[0456] In the above embodiments, by setting heat exchange channels and forming them on the heat exchange plate by stamping, the process steps of the heat exchange component 100 can be reduced, thereby increasing the production rate of the heat exchange component 100. At the same time, stamping is simple to manufacture and consumes less material, thereby reducing the production cost of the heat exchange component 100.

[0457] According to some embodiments of this application, such as Figure 11 As shown, the width f of the heat exchange channel can be 3mm-200mm.

[0458] For example, the width f of the heat exchange channel can be 3mm, 5mm, 10mm, 20mm, 30mm, 60mm, 90mm, 120mm, 150mm, 180mm, or 200mm. 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.

[0459] In the above embodiments, 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; it can also prevent the width of the heat exchange channel from being too small, thus reducing the number of first heat exchange sections 11 and thereby reducing the overall cost of the heat exchange component 100.

[0460] According to some embodiments of this application, the width f of the heat exchange channel is 5mm-80mm.

[0461] For example, the width f of the heat exchange channel can be 5mm, 10mm, 15mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm or 80mm.

[0462] In the above embodiments, 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 first heat exchange sections 11, thereby reducing the overall cost of the heat exchange component 100.

[0463] According to some embodiments of this application, the height of the heat exchange channel in the third direction is 1mm-20mm.

[0464] For example, a third party can refer to Figure 3 As shown in the top-down direction, the height of the third direction of the heat exchange channel can be 1mm, 2mm, 3mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm or 20mm.

[0465] In the above embodiments, by setting the height of the heat exchange channel in the third direction to 1mm-20mm, the height of the heat exchange component 100 is not too small, thereby ensuring the flow rate of the heat exchange fluid in the heat exchange component 100 and thus ensuring the heat exchange effect of the heat exchange component 100; at the same time, it also ensures that the height of the heat exchange component 100 is not too large, which is beneficial to reducing the space occupied by the heat exchange component 100 and realizing the miniaturization of the battery 1000.

[0466] According to some embodiments of this application, the height of the heat exchange channel in the third direction is 4mm-6mm.

[0467] For example, the height of the heat exchange channel in the third direction can be 4mm, 5mm or 6mm.

[0468] In the above embodiments, 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 100 can be guaranteed, while the space occupied by the heat exchange component 100 can be reduced, thereby achieving miniaturization of the battery 1000.

[0469] According to some embodiments of this application, the number of heat exchange channels is 2 to 4.

[0470] For example, the number of heat exchange channels can be 2, 3 or 4, and the number of heat exchange channels can be designed according to actual needs.

[0471] In the above embodiments, 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 frictional resistance of the heat exchange channel, reducing the pressure drop, and thus improving the heat exchange efficiency of the heat exchanger 100.

[0472] The following is for reference. Figures 12-13 The current collector 20 according to an embodiment of this application is described. Figure 12 According to the schematic diagram of the current collector 20 in the embodiment of this application, Figure 13 A schematic diagram of the current collector 20 from another angle according to an embodiment of this application.

[0473] According to some embodiments of this application, such as Figures 12-13 As shown, the heat exchanger 100 may further include a collector 20, which includes: a tube body 21, a plurality of first flow channel interfaces 22, a plurality of second flow channel interfaces 23, and a partition structure 24. The plurality of first flow channel interfaces 22 correspond one-to-one with and are connected to the first inlets and outlets of the plurality of heat exchange channels; the plurality of second flow channel interfaces 23 correspond one-to-one with and are connected to the second inlets and outlets of the plurality of heat exchange channels, and at least two second flow channel interfaces 23 are located on both sides of the plurality of first flow channel interfaces 22 along the extension direction of the tube body 21; the partition structure 24 is disposed inside the tube body 21, and the partition structure 24 separates the first flow channel interfaces 22 and the second flow channel interfaces 23 inside the tube body 21, and the plurality of second flow channel interfaces 23 are connected inside the tube body 21.

[0474] Specifically, the tube body 21 is used for the collection and distribution of heat exchange fluid. The first flow channel interface 22 and the second flow channel interface 23 are located on the tube body 21, respectively connected to the inlet and outlet of the heat exchange channel, for inputting and outputting the heat exchange fluid through the manifold. A partition structure 24 is located inside the tube body 21, separating the first flow channel interface 22 and the second flow channel interface 23 within the tube body 21. That is, the first flow channel interface 22 and the second flow channel interface 23 are not connected within the tube body 21, thus allowing the first flow channel interface 22 and the second flow channel interface 23 to be the input and output ends of the heat exchange channel, respectively. This allows the tube body 21 and the heat exchange channel to form a complete channel, enabling the liquid to enter the heat exchange channel from the tube body 21 for heat exchange and then exit from the tube body 21, completing the heat exchange process. Therefore, a single tube body 21 can be used for both liquid inlet and outlet, reducing the number of manifold components required and consequently reducing the production cost and space required for the heat exchange management components.

[0475] In addition, there are multiple first flow channel interfaces 22 and multiple second flow channel interfaces 23. For example, the number of first flow channel interfaces 22 and second flow channel interfaces 23 can be two, three or more. Among them, multiple second flow channel interfaces 23 are connected inside the tube body 21, 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 first flow channel interface 22. That is, at least two second flow channel interfaces 23 are set at both ends of the tube body 21, and multiple first flow channel interfaces 22 are set between at least two second flow channel interfaces 23. In this way, the heat exchange fluid can flow out of the tube body 21 from the second flow channel interfaces 23 on both sides, and after heat exchange, it can flow back to the tube body 21 from the first flow channel interface 22 in the middle. Alternatively, the heat exchange fluid can flow out of the tube body 21 from the first flow channel interface 22 in the middle region of the tube body 21, and after heat exchange, it can flow back to the tube body 21 from the second flow channel interfaces 23 at both ends of the tube body 21. In this way, the heat exchange fluid can flow from the periphery of the battery 1000 to the central region to achieve heat exchange, or the heat exchange fluid can flow from the central region of the battery 1000 to the periphery to achieve heat exchange, thereby improving the temperature uniformity of the battery 1000. This can reduce the assembly steps and installation space of the thermal management components, improve the temperature uniformity of the battery 1000, and extend the service life of the battery 1000.

[0476] In the above embodiment, by setting up a collector 20 and using a partition structure 24 to separate multiple first flow channel interfaces 22 and multiple second flow channel interfaces 23, and with the multiple second flow channel interfaces 23 connected within the tube body 21, the first flow channel interfaces 22 and the second flow channel interfaces 23 can respectively form the input and output ends of the heat exchange flow channels. This allows the liquid inlet and outlet operations to be completed using a single tube body 21, reducing the number of collector pipes used and also reducing the use of external connecting pipes. This reduces the production cost and space occupied by the heat exchange management components, as well as the assembly steps and installation space required. Furthermore, since there are multiple second flow channel interfaces 23, with at least two second flow channel interfaces 23 located on either side of the first flow channel interface 22, the heat exchange fluid can flow from the periphery of the battery 1000 towards the central region for heat exchange, or from the central region of the battery 1000 towards the periphery for heat exchange. This improves the temperature uniformity of the battery 1000 and extends its service life.

[0477] According to some embodiments of this application, such as Figures 12-13 As shown, the tube body 21 is divided into a first space 211 and a second space 212 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 segment, a second segment and a third segment connected in sequence. The first segment and the third segment are located on both sides of the first space 211, and the second segment is parallel to the first space 211.

[0478] 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 segment, a second segment and a third segment that are connected in sequence. The first segment and the third segment are each provided with a second flow channel interface 23. The second space 212 can connect multiple second flow channel interfaces 23. The first space 211 is arranged side by side with the second segment and is connected to the first flow channel interface 22. Thus, the first flow channel interface 22 is located in the middle of multiple second flow channel interfaces 23.

[0479] For example Figure 12 As shown, there are two of each of the first flow channel interface 22 and the second flow channel interface 23. The two second flow channel interfaces 23 are located 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. The first space 211 is arranged parallel to the second segment and is located between the first segment and the third segment.

[0480] In the above embodiments, by setting the first space 211 and the second space 212 to be independent of each other and not connected, two independent flow channels can be formed inside the tube body 21, so that the inlet and outlet 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, which can reduce the size of the tube body 21 and thus reduce the space ratio of the manifold.

[0481] According to some embodiments of this application, such as Figures 12-13 As shown, the partition structure 24 includes a first partition plate 241 and a second partition plate 242. The first partition plate 241 is used to separate the second segment and the first space 211. The second partition plate 242 includes at least two and is 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 segment and the first space 211, as well as the third segment and the first space 211.

[0482] Specifically, the first partition plate 241 can be formed as a plate of a certain size. The size of the first partition plate 241 can be set according to the positional dimensions of the pipe body 21 and the first flow channel interface 22. The first partition plate 241 is along the length direction of the pipe body 21 (e.g., along the length direction of the pipe body 21). Figure 12 Extending in the Y1 direction shown, the two ends of the first partition plate 241 in the width direction are sealed to the inner wall surface of the tube body 21, in the width direction of the tube body 21 (e.g., in the Y1 direction shown). Figure 13 In the X1 direction shown, it is used to separate the second segment and the first space 211, so that the second segment and the first space 211 are arranged side by side in the width direction of the tube body 21.

[0483] The second partition plate 242 includes at least two, that is, the second partition plate 242 may include two, three or more. When the second partition plate 242 includes only two, the second partition plate 242 is located at both ends of the first partition plate 241 in the length direction and is sealed to the first partition plate 241 and the inner wall 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.

[0484] In the above embodiments, by setting the first partition plate 241 and the second partition plate 242, two independent spaces can be formed inside the tube body 21, so that the inflow and outflow of liquid do not interfere with each other, thereby improving the heat exchange effect of the battery 1000.

[0485] The following is for reference. Figures 14-17 The installation component 19 according to an embodiment of this application is described. Figure 14 This is a schematic diagram of a heat exchanger 100 according to another embodiment of this application. Figure 15 yes Figure 14 The enlarged view of point A circled in the image. Figure 16 yes Figure 14 A schematic diagram of the heat exchanger 100 from another angle, as shown. Figure 17 yes Figure 16 The enlarged view of point B circled in the image.

[0486] According to some embodiments of this application, such as Figures 14-17 As shown, the heat exchanger 100 also includes a first tube section, a second tube section, and a mounting component 19.

[0487] One end of the first tube section forms the first inlet and outlet of the heat exchange channel; one end of the second tube section forms the second inlet and outlet of the heat exchange channel.

[0488] Specifically, the first and second pipe sections are mainly used for the collector 20, which is used to supply heat exchange fluid to the heat exchange channel or to discharge the heat exchange fluid after heat exchange, so that the heat exchange element 100 can achieve heat exchange. Both the first and second inlets / outlets can be used for the inlet and outlet of the heat exchange fluid. When the first inlet / outlet is used as the inlet of the heat exchange fluid, the second inlet / outlet is used as the outlet of the heat exchange fluid; when the first inlet / outlet is used as the outlet of the heat exchange fluid, the second inlet / outlet is used as the inlet of the heat exchange fluid.

[0489] Mounting member 19 is configured to be sealed to the housing 300 of battery 1000. A through hole is formed on mounting member 19, communicating with the spaces on both sides of mounting member 19. A first tube and / or a second tube pass through the through hole and are sealed to the periphery of the through hole. That is, at least one of the first tube and the second tube passes through the through hole and is sealed to the through hole.

[0490] Specifically, the spaces on both sides of the mounting component 19 are respectively the space for placing the heat exchanger 100 and the space for connecting the first inlet and the second inlet to the external pipe. The mounting component 19 is configured to be sealed to the housing 300 of the battery 1000. Thus, the spaces on both sides of the mounting component 19 are independent of each other. In this way, when a leak occurs at the connection between the first inlet and the second inlet and the collector 20, the heat exchange fluid will not enter the space where the heat exchanger 100 is placed, thereby effectively reducing the risk of corrosion of the heat exchanger 100.

[0491] In the existing technology, in order to reduce the risk of corrosion of the heat exchange component 100, the gap between the first and second pipelines and the housing 300 is usually sealed. This requires a large amount of sealing adhesive and a lot of manpower, resulting in low production efficiency and high production cost of the battery 1000.

[0492] In the above embodiment, after the mounting component 19 is sealed with the first pipeline and the second pipeline, the mounting component 19 is then sealed with the housing 300. This not only increases the structural strength at the location of the first pipeline and the second pipeline, but also reduces the labor and materials required for sealing. As a result, the production rate of the battery 1000 can be increased and the labor cost of producing the battery 1000 can be reduced.

[0493] In the above embodiment, by providing the mounting component 19, it is no longer necessary to separately seal the first tube and the second tube to the housing 300 when assembling the battery 1000. This reduces the labor and materials required for assembling the battery 1000, thereby increasing the production rate of the battery 1000 and reducing the labor cost of producing the battery 1000.

[0494] According to some embodiments of this application, such as Figures 14-17 As shown, the mounting member 19 has a cavity with an opening on one side, and the mounting member 19 has a mounting plate arranged opposite to the opening of the cavity. A through hole passes through the mounting plate. The mounting member 19 is suitable for being disposed 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 sealing connection with the box body 401 and the bottom guard plate 302.

[0495] The mounting component 19 has a cavity with an opening on one side. It should be noted that the opening side of the mounting component 19 can face the space where the first entrance and the second entrance are located, or it can face the space away from the first entrance and the second entrance.

[0496] Furthermore, the opening side of the mounting component 19 faces away from the space opposite to the first and second inlets / outlets. For example, the opening of the cavity is positioned away from the manifold 20. This effectively prevents dust and other impurities from accumulating inside the mounting component 19.

[0497] Mounting component 19 is adapted to be disposed between the housing body 401 and the bottom protective plate 302. That is, the heat exchanger 100 is arranged between the bottom wall of the housing body 401 and the protective plate, i.e., the heat exchanger 100 is located on the outside of the housing body 401. This effectively reduces damage to the battery cells 2011 caused by leakage from the heat exchanger 100. Furthermore, the bottom protective plate 302, located on the underside of the housing body 401, further increases the structural strength of the bottom of the battery 1000 and the load-bearing capacity of the bottom plate. It also protects against bottom impacts, effectively reducing safety issues caused by bottom impacts on multiple battery cells 2011 and the heat exchanger 100.

[0498] The outer peripheral surface of the mounting component 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 component 19 can be designed according to the specific structure of the box body 401 and the bottom guard plate 302. For example, if the bottom of the box body 401 and the bottom guard plate 302 are both flat, the outer peripheral surface of the mounting component 19 is also formed into a flat shape so that it can be sealed to the bottom plate and the bottom guard plate 302, thereby increasing the sealing performance of the bottom plate and the bottom guard plate 302.

[0499] For example Figures 14-17 As shown, the mounting component 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, and the second plate is horizontally arranged and connected to the other end of the mounting plate in the Z direction. 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, which are a first through hole and a second through hole, respectively. A first tube is inserted through the first through hole, and a second tube is inserted through the second through hole.

[0500] Furthermore, the first tube is welded to the periphery of the first through hole, and the second tube is welded to the periphery of the second through hole.

[0501] Furthermore, there are one or more first through holes, and each first through hole corresponds to a first tube portion. There are one or more second through holes, and each second through hole corresponds to a second tube portion.

[0502] 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. Even further, in the direction from the mounting member 19 toward the first heat exchange section 11, the lengths of the first plate and the second plate are different; 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.

[0503] Furthermore, the first plate, the second plate, and the mounting plate are integrally formed.

[0504] Furthermore, the mounting component 19 also includes stops, which are arranged at both ends along the length of the mounting plate and are connected and sealed to the mounting plate, the first plate, and the second plate. For example, the stops can be welded or bonded to the mounting plate, the first plate, and the second plate. The mounting plate, the first plate, the second plate, and the two stops enclose a cavity.

[0505] The side surface of the block facing away from the mounting plate is formed as an inclined surface. The length of the first plate is less than the length of the second plate. The end of the inclined surface facing the first plate is flush with the end of the first plate facing away from the mounting plate. In the direction from the first plate to the second plate, the other end of the inclined surface extends obliquely to the end of the second plate facing away from the mounting plate.

[0506] Additionally, it should be noted that a sealing element is provided around the periphery of the heat exchanger 100. The sealing element extends circumferentially along the heat exchanger 100 and is annular, or it surrounds the heat exchanger 100, with both ends of the sealing element connected to the mounting element 19. The sealing element can be a sealant.

[0507] In the above embodiments, by setting the mounting component 19 as a cavity with an opening on one side, the overall weight of the mounting component 19 can be reduced, thereby reducing the overall weight of the entire battery 1000 and achieving lightweighting of the battery 1000. At the same time, the mounting component 19 is suitable for being set between the housing body 401 and the bottom protective plate 302 of the housing 300. In this way, the bottom of the housing body 401 can isolate the heat exchange component 100 and the multiple battery cells 2011. Therefore, when the heat exchange component 100 is damaged, it will not affect the multiple battery cells 2011, thereby reducing the maintenance cost of the battery 1000.

[0508] like Figures 18-24 As shown, the battery 1000 specifically includes: a battery assembly 200, which includes battery cells 201, and the battery cells 201 include components along a third direction (e.g., ...). Figure 24 Multiple battery cells 2011 are arranged in sequence in the X2 direction (as shown); a heat exchanger 100 is disposed in the battery assembly 200 in the fourth direction (e.g., in the X2 direction). Figure 24 It is located on one side of the Z direction (as shown) and heat-exchanges with the battery assembly 200; wherein the third and fourth directions are set at an angle.

[0509] Specifically, the battery module 200 is mainly used for storing and releasing energy and is the core component of the battery 1000. The heat exchanger 100 is used to exchange heat with the battery module 200, so that the temperature of the battery module 200 can be maintained within the safe operating temperature, thereby improving the reliability and service life of the battery module 200.

[0510] Additionally, the phrase "the third and fourth directions are arranged at an angle" is intended to indicate that the third and fourth directions can be arranged perpendicularly, for example... Figure 24 As shown, the third direction can be the thickness direction of the battery cell 2011, i.e. Figure 24 The X2 direction shown can be the fourth direction, which can be the height direction of the battery cell 2011. Figure 24 The Z direction is shown; thus, multiple battery cells 2011 are stacked along the thickness direction of the battery cells 2011 to form a battery unit 201, and the heat exchanger 100 is arranged on one side of the height direction of the battery assembly 200 for heat exchange with the battery assembly 200. The third and fourth directions can also be arranged only intersecting and not perpendicular, 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 can be one or more, for example, the number of battery cells 201 can be one, two, three or more.

[0512] In the above embodiments, by setting the heat exchanger 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 maintained within a safe operating temperature, thereby improving the reliability and service life of the battery assembly 200.

[0513] like Figure 4 and Figure 18 As shown, the battery module 200 consists of multiple battery cells 2011 located on the outermost periphery, forming an outer battery cell, and the second heat exchange section 12 is entirely attached to the outer battery cell.

[0514] In this process, because the periphery of the battery module 200 dissipates more heat to the environment, the temperature of the outer battery cells is relatively lower than that of the inner battery cells. Meanwhile, the temperature of the heat exchange fluid in the second heat exchange section 12 is always the highest. As a result, the second heat exchange section 12 is fully in contact with the outer battery cells, which can improve the heat exchange efficiency of the outer battery cells and further balance the temperature difference caused by heat dissipation in the battery module 200.

[0515] In the above embodiment, by setting the second heat exchange section 12 to be fully in contact with the outer battery cells, the heat exchange efficiency of the outer battery cells can be improved, thereby further balancing the temperature difference of the battery module 200 caused by heat dissipation.

[0516] In the embodiments of this application, the battery 1000 is provided with the heat exchanger 100 of the first aspect embodiment described above. The second heat exchange section 12 of the heat exchanger 100 is bent to form a U-shaped region 120, and the first heat exchange section 11 is bent and disposed within the U-shaped region 120. Regardless of whether the number of the first heat exchange channels 10 is one or more, the U-shaped region formed by the bending of the second heat exchange section 12 is completely in contact with the outer battery cell group. The first heat exchange section 11 exchanges heat with the corresponding battery cell located within the U-shaped region. When the heat exchanger 100 exchanges heat with the battery assembly 200, the heat exchanger 100 can compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cell 2011 and the environment, so that the heat exchange effect of the battery cell 2011 on the periphery of the battery assembly 200 and the battery cell 2011 inside the battery assembly 200 tends to be consistent, thereby improving the temperature uniformity of the battery 1000. This can improve the service life of the battery 1000 to a certain extent, thereby improving the overall performance of the battery 1000.

[0517] According to some embodiments of this application, such as Figure 7 and Figure 19As shown, the battery assembly 200 includes a battery cell 201, and all the 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 along a fifth direction (e.g., Figure 19 As shown in the Y2 direction, multiple battery units 201 are arranged sequentially. Multiple battery cells 2011 located on the outermost periphery of the battery assembly 200 together form an outer battery cell. The third, fourth, and fifth directions are set at angles to each other.

[0518] The number of battery cells 201 included in the battery assembly 200 can be designed according to actual conditions. 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.

[0519] Specifically, when the battery assembly 200 includes a battery cell 201, and all the battery cells 2011 of the battery cell 201 together form an outer battery cell, then the entire second heat exchange section 12 and the first heat exchange section 11 exchange heat with the outer battery cells. Specifically, the second heat exchange section 12 exchanges heat with the periphery of the outer battery cells, and the first heat exchange section 11 exchanges heat with the middle position of the outer battery cells.

[0520] When the battery module 200 includes multiple battery cells 201, the multiple battery cells 201 located on the outermost periphery of the battery module 200 together form an outer battery cell. This can limit the heat exchange position of the second heat exchange section 12, which is beneficial to the layout of the heat exchange channel.

[0521] In the above embodiments, when the battery assembly 200 includes a battery cell 201, all the battery cells 2011 of the battery cell 201 together form an outer battery cell. At this time, the entire second heat exchange section 12 and the first heat exchange section 11 exchange heat with the outer battery cells. Therefore, the specific structure and layout of the second heat exchange section 12 and the first heat exchange section 11 are not limited, thereby reducing the layout complexity of the first heat exchange channel 10. By setting multiple battery cells 201 located at the outermost edge of the battery assembly 200 and multiple battery cells 2011 together to form an outer battery cell, the heat exchange position of the second heat exchange section 12 can be defined, which is beneficial to the layout of the heat exchange channel.

[0522] In the above embodiment, by setting multiple battery cells 201 to be located at the outermost periphery of the battery assembly 200, multiple battery cells 2011 together form an outer battery cell, thereby defining the heat exchange position of the second heat exchange section 12, which is beneficial to the layout of the heat exchange channel.

[0523] Please refer to it again. Figure 4 and Figure 18 The peripheral battery cells include a first group of battery cells 202, a second group of battery cells 203 and a third group of battery cells 204 arranged adjacent to each other. The first group of battery cells 202 includes multiple battery cells 2011 stacked along a third direction, the second group of battery cells 203 includes multiple battery cells 2011 stacked along a fifth direction, and the third group of battery cells 204 includes multiple battery cells 2011 stacked along a fifth direction.

[0524] For example Figure 18 As shown, the third direction can be the thickness direction of the battery cell 2011, that is, as... Figure 18 The X2 direction shown can be the length direction of the battery cell 2011, i.e. Figure 18 The Y2 direction is shown. Therefore, the first group of battery cells 202 includes multiple battery cells 2011 stacked along the thickness direction of the battery cells 2011; the second group of battery cells 203 includes multiple battery cells 2011 stacked along the length direction of the battery cells 2011; and the third group of battery cells 204 includes multiple battery cells 2011 stacked along the length direction of the battery cells 2011, as shown. Figure 18 As shown, the first group of battery cells 202 is arranged at one end of the battery assembly 200 in the Y2 direction; the second group of battery cells 203 and the third group of battery cells 204 are respectively arranged at both ends of the battery assembly 200 in the X1 direction.

[0525] 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 together; the second heat exchange part 121 extends and adheres to the first group of battery cells 202 to enable heat exchange, and / or the third heat exchange part 122 extends and adheres to the second group of battery cells 203 to enable heat exchange, and / or the fourth heat exchange part 125 extends and adheres to the third group of battery cells 204 to enable heat exchange.

[0526] It is understandable that when the second heat exchange section 12 is in contact with the peripheral battery cells for heat exchange, only one of the second heat exchange section 121, the third heat exchange section 122, or the fourth heat exchange section 125 may be in contact with the peripheral battery cells. For example, the second heat exchange section 121 may be in contact with the first group of battery cells 202, or the third heat exchange section 122 may be in contact with the second group of battery cells 203, or the fourth heat exchange section 125 may be in contact with the third group of battery cells 204. Alternatively, two of the second heat exchange sections 121, the third heat exchange section 122, or the fourth heat exchange section 125 may be in contact with the peripheral battery cells. For example, the second heat exchange section 121 may be in contact with the first group of battery cells 202, and the third heat exchange section 122 may be in contact with the fourth group of battery cells 204. Two groups of battery cells 203 can be bonded together for heat exchange, or the second heat exchange section 121 can be bonded together with the first group of battery cells 202 for heat exchange, and the fourth heat exchange section 125 can be bonded together with the third group of battery cells 204 for heat exchange, or the third heat exchange section 122 can be bonded together with the second group of battery cells 203 for heat exchange, and the fourth heat exchange section 125 can be bonded together with the third group of battery cells 204 for heat exchange; alternatively, the second heat exchange section 121, the third heat exchange section 122, and the fourth heat exchange section 125 can all be bonded together with the outer battery cells, such as the second heat exchange section 121 being bonded together with the first group of battery cells 202 for heat exchange, the third heat exchange section 122 being bonded together with the second group of battery cells 203 for heat exchange, and the fourth heat exchange section 125 being bonded together with the third group of battery cells 204 for heat exchange.

[0527] In the above embodiments, 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, the peripheral battery cell groups are arranged at the outermost edge of the battery assembly 200 and are closest to the side wall of the battery housing 300. They have more heat exchange with the environment and their temperature is relatively lower than that of battery cells in other positions. Therefore, 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 close 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 groups, so that the battery assembly 200 can have a good heat exchange effect, the temperature distribution inside the battery assembly 200 is more uniform, and thus the battery 1000 operates more stably.

[0528] According to some embodiments of this application, such as Figure 20 As shown, the peripheral battery cell also includes a fourth group of battery cells 205. The fourth group of battery cells 205 includes a plurality of battery cells 2011 arranged along a third direction. The second heat exchange section 12 also includes a fifth heat exchange section 127. The fifth heat exchange section 127 closes at least a portion of the opening of the U-shaped region 120 formed by the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125. The fifth heat exchange section 127 extends and adheres to the fourth group of battery cells 205 to enable heat exchange.

[0529] In the above embodiment, the peripheral battery cell group also includes a fourth group of battery cells 205. The fourth group of battery cells 205 can be arranged opposite to the first group of battery cells 202 in the fifth direction, and the fourth group of battery cells 205 is disposed on the side of the battery assembly 200 near 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 arranged at both ends of Y2 of the battery assembly 200. The fifth heat exchange section 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 battery cell group along the fifth heat exchange section 127.

[0530] For example, when the heat exchanger 100 exchanges heat with the battery assembly 200, the heat exchange fluid can first enter the second heat exchange section 12. Within the second heat exchange section 12, the fluid first flows into the fourth heat exchange part 125, where it flows along the fifth direction and exchanges heat with the third group of battery cells 204. Then, it enters the second heat exchange part 121, where it flows along the third direction and exchanges heat with the first group of battery cells 202. Next, it enters the third heat exchange part 122, where it flows along the fifth direction and exchanges heat with the second group of battery cells 203. Then, it enters the fifth heat exchange part 127, where it flows along the third direction and exchanges heat with the fourth group of battery cells 205. Finally, the heat exchange fluid flows back into the first heat exchange section 11 to exchange heat with the battery cells 2011 located inside the outer battery cell group within the battery assembly 200. Of course, the heat exchange fluid can also flow into the first heat exchange section 11 and then into the second heat exchange section 12 to exchange heat with the battery assembly 200, which will not be elaborated here.

[0531] In the above embodiment, the fifth heat exchange section 127 is provided in the second heat exchange section 12 to be in contact with the fourth group of battery cells 205. This allows the heat exchange component 100 to better coordinate with the heat dissipation of the battery cells 2011 at different positions in the battery 1000 for the arrangement of heat exchange channels. This makes the heat exchange component 100 have a better heat exchange effect on the battery assembly 200, thereby making the internal temperature distribution of the battery 1000 more uniform during operation and making the operation of the battery 1000 more stable.

[0532] Please refer to it again. Figure 4 and 18 In the embodiments of this application, the second heat exchange section 121 extends along the second direction, which is the same as the third direction; the third heat exchange section 122 and the fourth heat exchange section 125 extend along the first direction, which is the same as the fifth direction.

[0533] Specifically, the battery cell 201 includes a plurality of battery cells 2011 arranged in sequence along a third direction. The plurality of battery cells 201 are arranged in sequence along a fifth direction. Thus, the second heat exchange section 121 extends along the stacking direction of the plurality of battery cells 2011, and the third heat exchange section 122 and the fourth heat exchange section 125 extend along the arrangement direction of the plurality of battery cells 201. That is to say, the second heat exchange section 121 can exchange heat with the plurality of battery cells 2011 of a battery cell 201, and the third heat exchange section 122 and the fourth heat exchange section 125 can exchange heat with the plurality of battery cells 2011 of the plurality of battery cells 201.

[0534] It should be noted that there are generally two ways in which multiple battery cells 2011 are stacked: one is stacking along the thickness direction of the battery cell 2011, and the other is stacking along the length direction of the battery cell 2011. Specifically, when multiple battery cells 2011 are stacked along the thickness direction of the battery cell 2011, the multiple battery cells 201 are arranged sequentially 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 multiple battery cells 201 are arranged sequentially along the thickness direction of the battery cell 2011. Therefore, when multiple battery cells 2011 are stacked along the thickness direction of the battery cells 2011, the second heat exchange section 121 can exchange heat with the multiple battery cells 2011 of a battery unit 201 along the thickness direction of the battery cells 2011, and the third heat exchange section 122 and the fourth heat exchange section 125 can exchange heat with the multiple battery cells 2011 of the multiple battery units 201 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 second heat exchange section 121 can exchange heat with the multiple battery cells 2011 of a battery unit 201 along the length direction of the battery cells 2011, and the third heat exchange section 122 and the fourth heat exchange section 125 can exchange heat with the multiple battery cells 2011 of the multiple battery units 201 along the width direction of the battery cells 2011, thus ensuring heat exchange efficiency and effect.

[0535] Please refer to it again. Figure 18 The second direction is the thickness direction of the battery cell 2011, that is, as shown in the figure. Figure 18 The X2 direction shown is the first direction, which is the length direction of the battery cell 2011, i.e. Figure 18As shown in the Y2 direction, the battery cell 201 includes a plurality of battery cells 2011 stacked along the thickness direction of the battery cells 2011, and the battery assembly 200 includes a plurality of battery cells 201 arranged sequentially along the length direction of the battery cells 2011. Thus, the second heat exchange section 121 can extend along the thickness direction of the battery cells 2011 to exchange heat with the plurality of battery cells 2011; the third heat exchange section 122 and the fourth heat exchange section 125 can extend along the length direction of the battery cells 2011 and exchange heat with the battery cells 2011. Thus, the arrangement of the first heat exchange channel 10 of the heat exchange component 100 can be more reasonable, and the heat exchange effect of the heat exchange component 100 on the battery assembly 200 can be enhanced.

[0536] In the above embodiment, by setting the second heat exchange section 121 to extend along the second direction, which is the same as the third direction, and the third heat exchange section 122 and the fourth heat exchange section 125 to extend along the first direction, which is the same as the fifth direction, the extension directions 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 the arrangement of the battery cell 201. As a result, the arrangement of the first heat exchange channel 10 can better meet the heat exchange requirements of the battery module 200 and improve the heat exchange efficiency.

[0537] Please refer to it again. Figure 21 In the embodiments of this application, the first heat exchange section 11 includes a plurality of first heat exchange parts 111, which extend along a first direction, and the first direction and the fifth direction are the same direction.

[0538] It should be noted that in this embodiment, the first heat exchange section 111, the third heat exchange section 122 and the fourth heat exchange section 125 can all extend along the first direction, and the second heat exchange section 121 extends along the second direction. In this way, multiple first heat exchange sections 111 connected together can form an S-shaped heat exchange channel extending along the second direction.

[0539] The first direction can be the length direction of the battery cell 2011, for example... Figure 21 As shown, the first direction is the length direction of the battery cell 2011, that is... Figure 21 As shown in the Y2 direction, the first heat exchange section 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 section 111 and the battery cell 2011 can be increased, thereby increasing the heat exchange effect of the battery cell 2011. Alternatively, it can be along the thickness direction of the battery cell 2011, so that heat exchange can be achieved for multiple battery cells 2011.

[0540] In the above embodiments, by setting the first heat exchange section 111 to extend along the first direction, and the first direction and the fifth direction being the same direction, the first heat exchange section 111 can extend along the arrangement direction of the plurality of battery cells 201, thereby the first heat exchange section 111 can exchange heat with the plurality of battery cells 2011 of the plurality of battery cells 201. When the plurality of battery cells 201 are arranged sequentially along the thickness direction of the battery cells 2011, the first heat exchange section 111 can achieve heat exchange with the plurality of battery cells 2011. When the plurality of battery cells 201 are arranged sequentially along the length direction of the battery cells 2011, the heat exchange area between the first heat exchange section 111 and the battery cells 2011 increases, thereby increasing the heat exchange effect of the battery cells 2011.

[0541] In some specific embodiments of this application, the first heat exchange section 111 extends along a second direction, and the second direction and the third direction are the same direction.

[0542] It is understood that the first heat exchange section 111 and the second heat exchange section 121 extend in the same direction, and the first heat exchange section 111 and the second heat exchange section 121 are arranged in parallel and spaced apart. The third heat exchange section 122 and the fourth heat exchange section 125 extend along the first direction, and the first direction and the fifth direction are the same direction.

[0543] Please refer to it again. Figure 20 The second direction is the thickness direction of the battery cell 2011, that is, as shown in the figure. Figure 20 The X2 direction shown is the first direction, which is the length direction of the battery cell 2011, i.e. Figure 20 In the direction of Y2 shown, both the first heat exchange section 111 and the second heat exchange section 121 extend along the thickness direction of the battery cell 2011, allowing heat exchange with the battery cell 2011 along its thickness direction. Therefore, when the length of the first heat exchange section 111 is constant, the first heat exchange section 111 extending along the second direction can exchange heat with more battery cells 2011 than the first heat exchange section 121 extending along the first direction. When the number of bends in the first heat exchange section 11 is constant, the first heat exchange section 121 extending along the second direction... Compared to the first heat exchanger 111 extending along the first direction, the two adjacent first heat exchangers 111 are closer together, resulting in a better heat exchange effect. When a single battery cell 2011 exchanges heat with two heat exchangers, the number of first heat exchangers 111 extending along the second direction and arranged along the first direction is relatively lower than the number of first heat exchangers 111 extending along the first direction and spaced apart along the second direction. This means fewer bending cycles are required, which reduces the molding difficulty and processing convenience of the first heat exchanger 11.

[0544] Therefore, the first heat exchange section 111 extends along the second direction, which can not only satisfy the heat exchange effect, but also reduce the number of the first heat exchange section 111, thereby reducing the number of bends in the first heat exchange channel 10, reducing the pressure drop of the heat exchange fluid in the first heat exchange channel 10, improving the heat exchange efficiency, and at the same time reducing the molding difficulty and manufacturing cost of the heat exchange component 100, and increasing the production rate of the heat exchange component 100.

[0545] In the above embodiments, by setting the first heat exchange section 111 to extend along the second direction, the number of first heat exchange sections 111 can be reduced, the number of bends in 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.

[0546] Please refer to it again. Figures 18-23 In the embodiments of this application, the battery assembly 200 includes a plurality of battery cells 201 arranged sequentially along the fifth direction. At least one battery cell 201 located at both ends of the fifth direction is a first group of battery cells 202. The second heat exchange section 121 and at least one first heat exchange section 111 of the first heat exchange segment 11 are together attached to the first group of battery cells 202 so as to perform heat exchange.

[0547] The phrase “at least one battery cell 201 at both ends in the fifth direction is a first group of battery cells 202” indicates that either one of the battery cells 201 at both ends in the fifth direction can be formed as a first group of battery cells 202, or both battery cells 201 at both ends in the fifth direction can be formed as a first group of battery cells 202.

[0548] The above statement that "the second heat exchange section 121 and at least one first heat exchange section 111 of the first heat exchange segment 11 are together in contact with the first group of battery cells 202" is intended to indicate that the first group of battery cells 202 can be in contact with the second heat exchange section 121 and one first heat exchange section 111 for heat exchange, or it can be in contact with the second heat exchange section 121 and multiple first heat exchange sections 111 for heat exchange. For example, the number of first heat exchange sections 111 that are in contact with the first group of battery cells 202 for heat exchange can be two, three or more.

[0549] In the above embodiments, by setting at least one first heat exchange section 111 of the second heat exchange section 121 and the first heat exchange section 11 to be in contact with the first group of battery cells 202 for heat exchange, 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.

[0550] According to some embodiments of this application, such as Figure 18As shown, there are multiple first heat exchange sections 111, and they are located in the first direction (e.g., Figure 18 The second heat exchange section 121 and the first heat exchange section 111, which is furthest from the second heat exchange section 121 along the line connecting them, exchange heat with the first group of battery cells 202.

[0551] Wherein, both the first heat exchange section 111 and the second heat exchange section 121 are along the second direction (e.g. Figure 18 Extending in the X1 direction shown, the first heat exchange section 111 and the second heat exchange section 121 are connected by a third heat exchange section 122. The third heat exchange section 122 is connected to the first heat exchange section 111 that is furthest from the second heat exchange section 121 along the first direction. Thus, the second heat exchange section 121 and the first heat exchange section 111 that is furthest from the second heat exchange section 121 along the connecting line connected to the second heat exchange section 121 exchange heat with the first group of battery cells 202. In other words, the second heat exchange section 121 and the first heat exchange section 111 that is closest to the second heat exchange section 121 exchange heat with the first group of battery cells 202.

[0552] Specifically, when the battery assembly 200 is heated, the high-temperature heat exchange fluid can enter the second heat exchange section 121 through the fourth heat exchange section 125. At this time, the temperature of the heat exchange fluid in the second heat exchange section 121 is relatively high. Then, the heat exchange fluid flows through the third heat exchange section 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 section 111 that is farthest from the second heat exchange section 121. Then, it passes through multiple first heat exchange sections 111 in sequence to exchange heat with the battery assembly 200 until it flows to the first heat exchange section 111 that is farthest from the second heat exchange section 121 along the fluid flow direction. The first heat exchange section 111 is closest to the second heat exchange section 121 in a straight line and exchanges heat with the first group of battery cells 202 together with the second heat exchange section 121. The temperature of the heat exchange fluid entering the second heat exchange section 121 is relatively high, close to the inlet temperature of the first heat exchange channel 10, while the temperature of the heat exchange fluid in the first heat exchange section 111, which is closest to the second heat exchange section 121, is relatively low, close to the outlet temperature of the first heat exchange channel 10.

[0553] When cooling the battery assembly 200, the low-temperature heat exchange fluid first enters the first heat exchange section 11. Within the first heat exchange section 11, the fluid first enters the first heat exchange section 111, which is adjacent to the second heat exchange section 121, and exchanges heat with the first group of battery cells 202. Then, it flows sequentially through multiple first heat exchange sections 111, exchanging heat with the battery assembly 200. Finally, it enters the third heat exchange section 122 through the first heat exchange section 111 furthest from the second heat exchange section 121, and then flows back to the second heat exchange section 121. During the heat exchange process, the temperature of the heat exchange fluid in the first heat exchange section 111 closest to the second heat exchange section 121 is lower, close to the inlet temperature of the first heat exchange channel 10. The temperature of the heat exchange fluid entering the second heat exchange section 121 is higher, close to the outlet temperature of the first heat exchange channel 10.

[0554] Therefore, the second heat exchange section 121 and the adjacent first heat exchange section 111 exchange heat with the first group of battery cells 202, which can balance the temperature difference of the first group of battery cells 202 and thus improve the temperature uniformity of the first group of battery cells 202. At the same time, due to heat dissipation from the periphery of the battery assembly 200 and the environment, the first group of battery cells 202 dissipates more heat than the battery cells 2011 located in the middle of the battery assembly 200, resulting in a lower temperature. Therefore, the higher-temperature fluid flowing in the second heat exchange section 121 exchanges heat with the first group of battery cells 202, which can increase the temperature of the first group of battery cells 202, make up for the heat lost by the first group of battery cells 202 due to heat exchange with the environment, and thus improve the temperature uniformity of the first group of battery cells 202 and the other battery cells 2011.

[0555] In addition, the temperature at the edge of the first group of battery cells 202 is relatively lower than that on the other side. Therefore, the first group of battery cells 202 exchanges heat with the second heat exchange section 121 and the first heat exchange section 111, which is the furthest away from the second heat exchange section 121 along the sequentially connected line. This can balance the temperature difference on both sides of the first group of battery cells 202 and improve the temperature uniformity of the first group of battery cells 202.

[0556] In the above embodiment, by setting the second heat exchange section 121 and the first heat exchange section 111, which is furthest away from the second heat exchange section 121 along the connecting line connected to it, heat exchange is performed between the second heat exchange section 121 and the adjacent first heat exchange section 111 and the first battery cell 202. This allows the second heat exchange section 121 to exchange heat with the edge of the first battery cell 202, and the first heat exchange section 111 to exchange heat with the other side of the first battery cell 202. The temperature difference between the heat exchange fluid in the second heat exchange section 121 and the fluid in the first heat exchange section 111 is relatively large, and the heat exchange temperature of the first battery cell 202 is approximately the average temperature of the second heat exchange section 121 and the adjacent first heat exchange section 111. This balances the temperature difference of the first battery cell 202 and improves the temperature uniformity of the first battery cell 202.

[0557] According to some embodiments of this application, such as Figure 4 As shown, 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 together. 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.

[0558] In some specific embodiments, the second heat exchange section 121 extends and adheres to the first group of battery cells 202 to enable heat exchange, the third heat exchange section 122 extends and adheres to the second group of battery cells 203 to enable heat exchange, and the fourth heat exchange section 125 extends and adheres to the third group of battery cells 204 to enable heat exchange.

[0559] Since the first group of battery cells 202 comprises multiple battery cells 2011 stacked along a third direction, the second group of battery cells 203 comprises multiple battery cells 2011 stacked along a fifth direction, and the third group of battery cells 204 comprises multiple battery cells 2011 stacked along a fifth direction, the second heat exchange section 121 extends and adheres to the first group of battery cells 202, that is, the second heat exchange section 121 extends along a third direction and exchanges heat with the first group of battery cells 202; the third heat exchange section 122 extends and adheres to the second group of battery cells 203, that is, the third heat exchange section 122 extends along a fifth direction and exchanges heat with the second group of battery cells 203; and the fourth heat exchange section 125 extends and adheres to the third group of battery cells 204, that is, the fourth heat exchange section 125 extends along a fifth direction and exchanges heat with the third group of battery cells.

[0560] In the above embodiment, by providing a second heat exchange section 121 that extends and adheres to the first group of battery cells 202 to enable heat exchange, a third heat exchange section 122 that extends and adheres to the second group of battery cells 203 to enable heat exchange, and a fourth heat exchange section 125 that extends and a...

Claims

1. A heat exchanger for a battery, the battery comprising a battery assembly (200), the battery assembly (200) comprising battery cells (201), the battery cell (201) comprising a plurality of battery units (2011) arranged in sequence, the plurality of battery units (2011) located on the outermost periphery of the battery assembly (200) forming an outer battery unit, characterized in that, The heat exchanger is adapted to be disposed on one side of the battery assembly (200) and exchange heat with the battery assembly (200). The heat exchanger includes a first heat exchange channel (10), which 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 region. The first heat exchange section (11) is bent and disposed within the U-shaped region and is bent and connected to the second heat exchange section (12). Wherein, the U-shaped region is in contact with the outer battery cell regardless of whether the number of the first heat exchange channel (10) is one or more, so as to exchange heat with the outer battery cell, and the first heat exchange section (11) exchanges heat with the corresponding battery cell located in the U-shaped region. The second heat exchange section (12) is located on the outermost side of the first heat exchange channel (10) in the circumferential direction; The first heat exchange section (11) and the second heat exchange section (12) are bent in the same plane.

2. The heat exchanger according to claim 1, characterized in that, The first heat exchange section (11) includes a plurality of first heat exchange parts (111), which are arranged at intervals and connected by bending in sequence.

3. The heat exchanger according to claim 2, characterized in that, Multiple first heat exchange sections (111) are arranged at intervals along a first direction, and each first heat exchange section (111) extends in a straight line along a second direction, with the first direction and the second direction forming an angle.

4. The heat exchanger according to claim 2, characterized in that, The first heat exchange section (11) further includes a first bending section (112), which is arc-shaped and bends between two adjacent first heat exchange sections (111).

5. The heat exchanger according to any one of claims 1-4, characterized in that, 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). The second heat exchange part (121) extends along the first side periphery 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 periphery 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) communicates 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 periphery of the first heat exchange section (11).

6. The heat exchanger according to claim 5, characterized in that, The first heat exchange section (11) includes a plurality of first heat exchange parts (111), which are sequentially bent and connected in a first direction; wherein, The second heat exchange section (121) is located on one side of the plurality of first heat exchange sections (111) along the first direction, and the third heat exchange section (122) is located on one side of the plurality of first heat exchange sections (111) along the second direction, the first direction and the second direction being arranged at an angle; the first end of the third heat exchange section (122) is connected to one end of the second heat exchange section (121) along the second direction, and the second end of the third heat exchange section (122) is connected to the one of the plurality of first heat exchange sections (111) that is furthest from the second heat exchange section (121) along the first direction; the fourth heat exchange section (125) is located on the other side of the plurality of first heat exchange sections (111) along the second direction, one end of the fourth heat exchange section (125) is connected to the end of the second heat exchange section (121) away from the third heat exchange section (122), and the other end of the fourth heat exchange section (125) extends along the first direction in a direction away from the second heat exchange section (121); or, The second heat exchange section (121) is located on one side of the plurality of first heat exchange sections (111) along the second direction, and the third heat exchange section (122) is located on one side of the plurality of first heat exchange sections (111) along the first direction, the first direction and the second direction being arranged at an angle; the first end of the third heat exchange section (122) is connected to one end of the second heat exchange section (121) along the first direction, the second end of the third heat exchange section (122) is connected to the one of the plurality of first heat exchange sections (111) that is closest to the third heat exchange section (122) along the first direction, the fourth heat exchange section (125) is located on the other side of the plurality of first heat exchange sections (111) along the first direction, one end of the fourth heat exchange section (125) is connected to the end of the second heat exchange section (121) away from the third heat exchange section (122), and the other end of the fourth heat exchange section (125) extends along the second direction in a direction away from the second heat exchange section (121).

7. The heat exchanger according to claim 6, characterized in that, The third heat exchange section (122) and the fourth heat exchange section (125) extend along a first direction, and the first heat exchange section (111) and the second heat exchange section (121) both extend along a second direction; or, The first heat exchange section (111), the third heat exchange section (122) and the fourth heat exchange section (125) are all arranged to extend along the second direction, and the second heat exchange section (121) is arranged to extend along the first direction.

8. The heat exchanger according to claim 7, characterized in that, Both the third heat exchange section (122) and the fourth heat exchange section (125) extend along a first direction, wherein the length of the fourth heat exchange section (125) is less than or equal to the length of the third heat exchange section (122) in the first direction; or, The first heat exchange section (111) and the third heat exchange section (122) extend along the second direction, the second heat exchange section (121) extends along the first direction, and in the second direction, the length of the third heat exchange section (122) is greater than or equal to the length of the first heat exchange section (111).

9. The heat exchanger according to claim 7, characterized in that, The fourth heat exchange section (125) extends along the first direction and extends to a position close to the one of the plurality of first heat exchange sections (111) that is furthest from the second heat exchange section (121).

10. The heat exchanger according to claim 6, characterized in that, The second heat exchange section (12) further includes a second bend (123) and a third bend (124), both of which are arc-shaped. The second bend (123) is connected between the first end of the third heat exchange section (122) and the second heat exchange section (121), and the third bend (124) is connected between the second end of the third heat exchange section (122) and the first heat exchange section (111).

11. The heat exchanger according to claim 5, characterized in that, The second heat exchange section (12) further includes a fifth heat exchange part (127), which extends along the fourth side periphery of the first heat exchange section (11) and closes at least a portion of the opening of the U-shaped region formed by the second heat exchange part (121), the third heat exchange part (122) and the fourth heat exchange part (125).

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

13. The heat exchanger according to claim 5, characterized in that, The first heat exchange channel (10) further includes a third heat exchange section (13), wherein 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.

14. The heat exchanger according to claim 13, characterized in that, The first heat exchange section (11) includes a plurality of first heat exchange parts (111), which are sequentially bent and connected in a first direction; The third heat exchange section (13) is arranged on the side of the first heat exchange section (11) away from the third heat exchange part (122), 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.

15. The heat exchanger according to claim 14, characterized in that, The third heat exchange section (13) extends along the first direction toward a direction away from the second heat exchange section (121), and the first heat exchange section (111) extends along the second direction, wherein the first direction and the second direction are arranged at an angle.

16. The heat exchanger according to claim 15, characterized in that, The third heat exchange section (13) extends along the first direction to a position that is furthest from the second heat exchange section (121) among the plurality of first heat exchange sections (111).

17. The heat exchanger according to claim 14, characterized in that, The first heat exchange channel (10) further includes a fourth bend (14), which is arc-shaped and bends between the third heat exchange section (13) and the first heat exchange section (111).

18. The heat exchanger according to claim 13, characterized in that, The first heat exchange channel (10) further includes: a first inlet / outlet section (15), one end of the first inlet / outlet section (15) is connected at an angle to the third heat exchange section (13), and the other end of the first inlet / outlet section (15) forms the first inlet / outlet of the first heat exchange channel (10).

19. The heat exchanger according to claim 18, characterized in that, The first inlet / outlet section (15) extends in a second direction away from the first heat exchange section (11), and the third heat exchange section (13) extends in a first direction, with the first direction and the second direction forming an angle.

20. The heat exchanger according to claim 19, characterized in that, The first heat exchange channel (10) further includes a fifth bend (16), which is arc-shaped and bends between the third heat exchange section (13) and the first inlet / outlet section (15).

21. The heat exchanger according to claim 5, characterized in that, The first heat exchange channel (10) further includes: a second inlet / outlet section (17), one end of which is connected at an angle to the fourth heat exchange section (125), and the other end of which forms a second inlet / outlet of the first heat exchange channel (10); and the second inlet / outlet section (17) extends along a second direction away from the first heat exchange section (11), and the fourth heat exchange section (125) extends along a first direction, which is at an angle to the second direction.

22. The heat exchanger according to any one of claims 1-4, characterized in that, The first heat exchange section (11) is connected downstream of the second heat exchange section (12) in the direction of fluid flow; or, the heat exchanger is configured such that when heating the battery assembly (200) of the battery, the first heat exchange section (11) is connected downstream of the second heat exchange section (12) in the direction of fluid flow; and when cooling the battery assembly (200) of the battery, the first heat exchange section (11) is connected upstream of the second heat exchange section (12) in the direction of fluid flow.

23. The heat exchanger according to any one of claims 1-4, characterized in that, The heat exchanger has one or more heat exchange channels. When there are multiple heat exchange channels, the multiple heat exchange channels are arranged at intervals along a first direction or arranged around each other. At least one of the heat exchange channels is formed as the first heat exchange channel (10), and the multiple heat exchange channels are arranged in parallel.

24. The heat exchanger according to claim 23, characterized in that, The plurality of heat exchange channels are arranged at intervals along a first direction, and the two heat exchange channels located at both ends of the first direction are both the first heat exchange channels (10); and the two first heat exchange channels (10) are arranged symmetrically about the center line of the heat exchange element along a second direction, wherein the second direction is set at an angle to the first direction.

25. The heat exchanger according to claim 23, characterized in that, The plurality of heat exchange channels are arranged symmetrically about the centerline of the heat exchanger along the second direction.

26. The heat exchanger according to claim 23, characterized in that, The plurality of heat exchange channels further include: at least one second heat exchange channel (30), the second heat exchange channel (30) being disposed between 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).

27. The heat exchanger according to claim 26, characterized in that, The second heat exchange channel (30) includes a plurality of fourth heat exchange sections (31), which are connected in sequence. The fourth heat exchange sections (31) extend along a second direction, and the plurality of fourth heat exchange sections (31) are arranged at intervals in the first direction. The first direction and the second direction are arranged at an angle.

28. The heat exchanger according to claim 23, characterized in that, The heat exchanger has multiple heat exchange channels, including a first heat exchange channel (10) and at least one third heat exchange channel (40). The third heat exchange channel (40) is bent within the U-shaped region 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. The bending structures of the first heat exchange channel (10) and the third heat exchange channel (40) may be the same or different.

29. The heat exchanger according to claim 28, characterized in that, The third heat exchange channel (40) includes a U-shaped region with the same structure as the first heat exchange channel (10), and at least a portion of the first heat exchange section (11) of the first heat exchange channel (10) is located within the U-shaped region of the third heat exchange channel (40).

30. The heat exchanger according to claim 28, characterized in that, The U-shaped region of the first heat exchange channel (10) is located on the outermost circumferential direction of the heat exchanger.

31. The heat exchanger according to claim 23, characterized in that, The heat exchanger 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 flow channel.

32. The heat exchanger according to claim 31, characterized in that, The heat exchange tube is formed by bending a single tube.

33. The heat exchanger according to claim 32, characterized in that, The heat exchange tube is bent in an arc shape at the bend position.

34. The heat exchanger according to claim 33, characterized in that, The heat exchange tube is bent in an arc at the bend 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.

35. The heat exchanger according to claim 34, characterized in that, 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.

36. The heat exchanger according to claim 33, characterized in that, The wall thickness of the heat exchange tube at the bend is greater than or equal to 0.2 mm.

37. The heat exchanger according to claim 33, characterized in that, At the bend of the heat exchange tube, the wall thickness reduction rate of the heat exchange tube is less than or equal to 50%.

38. The heat exchanger according to claim 37, characterized in that, The bending thinning rate of the heat exchange tube is less than or equal to 30%.

39. The heat exchanger according to claim 31, characterized in that, The wall thickness of the heat exchange tube is 0.2mm-3mm.

40. The heat exchanger according to claim 39, characterized in that, The wall thickness of the heat exchange tube is 0.5mm-1.2mm.

41. The heat exchanger according to claim 23, characterized in that, The heat exchanger includes a heat exchange plate, and the heat exchange channel is formed on the heat exchange plate by stamping.

42. The heat exchanger according to claim 23, characterized in that, The width of the heat exchange channel is 3mm-200mm.

43. The heat exchanger according to claim 42, characterized in that, The width of the heat exchange channel is 5mm-80mm.

44. The heat exchanger according to claim 42, characterized in that, The height of the heat exchange channel in the third direction is 1mm-20mm.

45. The heat exchanger according to claim 44, characterized in that, The height of the heat exchange channel in the third direction is 4mm-6mm.

46. ​​The heat exchanger according to claim 23, characterized in that, The number of heat exchange channels is 2 to 4.

47. The heat exchanger according to claim 23, characterized in that, The heat exchanger further includes a collector (20), the collector (20) comprising: Pipe body (21); Multiple first flow channel interfaces (22) are provided, and each of the multiple first flow channel interfaces (22) corresponds to and is connected to the first inlet and outlet of the multiple heat exchange channels; Multiple second flow channel interfaces (23) are provided, each corresponding to and connected to the second inlet and outlet of the multiple heat exchange channels. Furthermore, along the extension direction of the tube body (21), at least two second flow channel interfaces (23) are located on both sides of the multiple first flow channel interfaces (22). A partition structure (24) is disposed inside the tube body (21). The partition structure (24) separates the first flow channel interface (22) and the second flow channel interface (23) inside the tube body (21), and the plurality of second flow channel interfaces (23) are connected inside the tube body (21).

48. The heat exchanger according to claim 47, characterized in that, The tube body (21) is divided into a first space (211) and a second space (212) by the 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 segment, a second segment and a third segment connected in sequence. The first segment and the third segment are located on both sides of the first space (211), and the second segment is parallel to the first space (211).

49. The heat exchanger according to claim 48, characterized in that, 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 segment and the first space (211). The second partition plate (242) includes at least two partition plates 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 segment and the first space (211), as well as the third segment and the first space (211).

50. The heat exchanger according to claim 23, characterized in that, Also includes: The first tube section, the inlet end of the first tube section forms the first inlet and outlet of the heat exchange channel; The second tube section, the outlet end of the second tube section forms the second inlet and outlet of the heat exchange channel; Mounting member (19) configured to be sealed to the battery housing (300), the mounting member (19) having a through hole communicating with the spaces on both sides of the mounting member (19), the first tube portion and / or the second tube portion passing through the through hole and being sealed to the through hole.

51. The heat exchanger according to claim 50, characterized in that, The mounting member (19) has a cavity with an opening on one side. The mounting member (19) includes a mounting plate arranged opposite to the opening of the cavity. The through hole passes through the mounting plate. The mounting member (19) is adapted to be disposed between the box body (401) and the bottom guard plate (302) of the box body (300). The outer peripheral surface of the mounting member (19) is adapted to be sealed to the box body (401) and the bottom guard plate (302).

52. A battery, characterized in that, include: The heat exchanger as described in any one of claims 1-51; A battery assembly (200) includes a battery cell (201), the battery cell (201) including a plurality of battery cells (2011) arranged in sequence along a third direction; The heat exchanger is disposed on one side of the battery assembly (200) in the fourth direction and exchanges heat with the battery assembly (200); Wherein, the third direction and the fourth direction are set at an angle. The battery assembly (200) consists of a plurality of battery cells (2011) located on the outermost periphery, forming an outer battery cell group. The second heat exchange section (12) is entirely attached to the outer battery cell group.

53. The battery according to claim 52, characterized in that, The battery assembly (200) includes one battery cell (201), and all the battery cells (2011) of the battery cell (201) together form the peripheral battery cell; or, the battery assembly (200) includes multiple battery cells (201), and the multiple battery cells (201) are arranged sequentially along the fifth direction. The multiple battery cells (201) located at the outermost edge of the battery assembly (200) together form the peripheral battery cell, and the third direction, the fourth direction and the fifth direction are arranged at angles to each other.

54. The battery according to claim 53, characterized in that, 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) arranged adjacent to each other. The first group of battery cells (202) includes a plurality of battery cells (2011) stacked along the third direction. The second group of battery cells (203) includes a plurality of battery cells (2011) stacked along the fifth direction. The third group of battery cells (204) includes a plurality of battery cells (2011) stacked along the fifth direction. 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 together; The second heat exchange section (121) extends and adheres to the first group of battery cells (202) to enable heat exchange, and / or the third heat exchange section (122) extends and adheres to the second group of battery cells (203) to enable heat exchange, and / or the fourth heat exchange section (125) extends and adheres to the third group of battery cells (204) to enable heat exchange.

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

56. The battery according to claim 54, characterized in that, The second heat exchange section (121) extends along a second direction, which is the same as the third direction; the third heat exchange section (122) and the fourth heat exchange section (125) extend along a first direction, which is the same as the fifth direction; and / or, the first heat exchange section (11) includes a plurality of first heat exchange sections (111), which extend along the first direction, which is the same as the fifth direction.

57. The battery according to claim 56, characterized in that, The battery assembly (200) includes a plurality of battery cells (201) arranged sequentially along a fifth direction, and at least one of the battery cells (201) located at both ends of the fifth direction is the first group of battery cells (202). The second heat exchange section (121) and at least one first heat exchange section (111) of the first heat exchange segment (11) are together attached to the first group of battery cells (202) so as to perform heat exchange.

58. The battery according to claim 57, characterized in that, The number of the first heat exchange section (111) is multiple, and they are sequentially bent and connected in the first direction; The second heat exchange section (121) and the first heat exchange section (111) which is furthest away from the second heat exchange section (121) along the line that connects them sequentially exchange with the first group of battery cells (202).

59. The battery according to claim 54, characterized in that, 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 together. 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 second heat exchange section (121) extends and adheres to the first group of battery cells (202) to enable heat exchange; the third heat exchange section (122) extends and adheres to the second group of battery cells (203) to enable heat exchange; and the fourth heat exchange section (125) extends and adheres to the third group of battery cells (204) to enable heat exchange; or The second heat exchange section (121) is attached to the second group of battery cells (203) to enable heat exchange, and the third heat exchange section (122) is attached to the first group of battery cells (202) to enable heat exchange.

60. The battery according to claim 54, characterized in that, The first heat exchange channel (10) further includes: a third heat exchange section (13), wherein the third heat exchange section (13) is connected to the end of the first heat exchange section (11) away from the second heat exchange section (12), and is connected to the first heat exchange section (11) at an angle; The battery assembly (200) further includes a fifth group of battery cells (206), wherein the fifth group of battery cells (2011) comprises a plurality of battery cells (2011) stacked along a fifth direction, and the fifth group of battery cells (206) is arranged adjacent to the third group of battery cells (204). The third heat exchange section (13) and the fourth heat exchange part (125) are both in contact with the third group of battery cells (204) to enable heat exchange; or, the third heat exchange section (13) is in contact with the fifth group of battery cells (206) to enable heat exchange, and the fourth heat exchange part (125) is in contact with the third group of battery cells (204) to enable heat exchange; or, the third heat exchange section (13) is in contact with the third group of battery cells (204) to enable heat exchange, and the fourth heat exchange part (125) is arranged on the outer side of the battery assembly (200) in the third direction.

61. The battery according to claim 56, characterized in that, The first heat exchange section (111) of the first heat exchange section (11) and the second heat exchange section (121) of the second heat exchange section (12) both extend along the second direction and are arranged at intervals in the first direction. One of the battery cells (201) is bonded to one of the second heat exchange sections (121) and at least one of the first heat exchange sections (111) to enable heat exchange; or, one of the battery cells (201) is bonded to at least two of the first heat exchange sections (111) to enable heat exchange.

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

63. The battery according to claim 61, characterized in that, The number of the first heat exchange channels (10) is two, and each first heat exchange channel (10) includes: three first heat exchange sections (111), one second heat exchange section (121), one third heat exchange section (122), one fourth heat exchange section (125), and one third heat exchange segment (13). The number of battery cells (201) is four. The battery cell (201) located at the end in the fifth direction is attached to one first heat exchange section (111) and one second heat exchange section (121) to enable heat exchange. Each of the remaining battery cells (201) is attached to two of the first heat exchange sections (111) to enable heat exchange. The third heat exchange section (122) is connected to the second heat exchange section (121) and the first heat exchange section (111) which is furthest from the second heat exchange section (121), and is in contact with the second group of battery cells (203) to enable heat exchange. The third heat exchange segment (13) is connected to the first heat exchange section (111) which is closest to the second heat exchange section (121). The third heat exchange segment (13) and / or the fourth heat exchange section (125) are in contact with the third group of battery cells (204) to enable heat exchange.

64. The battery according to claim 61, characterized in that, The number of the first heat exchange channels (10) is two, and each first heat exchange channel (10) includes: five first heat exchange sections (111), one second heat exchange section (121), one third heat exchange section (122), one fourth heat exchange section (125), and one third heat exchange segment (13). The number of battery cells (201) is six. The battery cell (201) located at the end in the fifth direction is attached to one first heat exchange section (111) and one second heat exchange section (121) to enable heat exchange. Each of the remaining battery cells (201) is attached to two of the first heat exchange sections (111) to enable heat exchange. The third heat exchange section (122) is connected to the second heat exchange section (121) and the first heat exchange section (111) which is furthest from the second heat exchange section (121), and is in contact with the second group of battery cells (203) to enable heat exchange. The third heat exchange segment (13) is connected to the first heat exchange section (111) which is closest to the second heat exchange section (121). The third heat exchange segment (13) and / or the fourth heat exchange section (125) are in contact with the third group of battery cells (204) to enable heat exchange.

65. The battery according to claim 61, characterized in that, The number of the first heat exchange channels (10) is two, and each first heat exchange channel (10) includes: five first heat exchange sections (111), one second heat exchange section (121), one third heat exchange section (122), one fourth heat exchange section (125), and one third heat exchange segment (13). The number of battery cells (201) is four. The battery cell (201) located at the end in the fifth direction is attached to two first heat exchange sections (111) and one second heat exchange section (121) to enable heat exchange. The remaining battery cell (201) is attached to three of the first heat exchange sections (111) to enable heat exchange. The third heat exchange section (122) is connected to the second heat exchange section (121) and the first heat exchange section (111) which is furthest from the second heat exchange section (121), and is in contact with the second group of battery cells (203) to enable heat exchange. The third heat exchange segment (13) is connected to the first heat exchange section (111) which is closest to the second heat exchange section (121). The third heat exchange segment (13) and / or the fourth heat exchange section (125) are in contact with the third group of battery cells (204) to enable heat exchange.

66. The battery according to claim 52, characterized in that, The battery also includes a housing (300), the housing (300) includes a housing body (401), the housing body (401) is an integral stamped part and includes a bottom wall and a surrounding wall, and the battery assembly (200) is disposed inside the housing body (401).

67. The battery according to claim 66, characterized in that, The battery's thermal management system includes a temperature regulating component (500), which includes at least one of a first temperature regulating component (501) and a second temperature regulating component (502). The first temperature regulating element (501) is disposed outside the box body (401) and is attached to the outer wall of the box body (401); The second temperature regulating element (502) is disposed inside the housing (300) and is located between the peripheral wall of the battery cell (2011) and the housing (300); At least one of the first temperature regulating element (501) and the second temperature regulating element (502) forms the heat exchange element.

68. The battery according to claim 67, characterized in that, The thermal management system of the battery also includes a third temperature regulating component (503), which is disposed inside the housing body (401) and located between two adjacent battery cells (2011). The structure of the third temperature regulating component (503) may be the same as or different from that of the heat exchange component.

69. The battery according to claim 66, characterized in that, The housing (300) also includes a bottom guard plate (302), which is located on the lower side of the housing body (401), and the heat exchanger is located between the housing body (401) and the bottom guard plate (302). The battery also includes a foaming element (400), at least a portion of which fills the gap formed by the bends in the heat exchange tubes of the heat exchange element.

70. The battery according to claim 69, characterized in that, The foaming component (400) includes a body (401) and a plurality of ribs (402). The plurality of ribs (402) are formed on one side surface of the body (401) in the thickness direction. The plurality of ribs (402) cooperate with the body (401) 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.

71. An electrical device, characterized in that, Includes the battery according to any one of claims 52-70.

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