Heat exchange plate, battery pack, and vehicle

Abstract

Heat exchange plate (2), battery pack, and vehicle. The heat exchange plate (2) has a heat exchange area (203) and a battery area (204), where the heat exchange area (203) is arranged around the battery area (204), and a flow path (21) configured such that the heat exchange working medium can flow through the flow path (21) and is arranged within the heat exchange plate (2). The first flow path (100) is located in the heat exchange area (203), and the second flow paths (200, 300, 400) are distributed in the battery area (204).

Description

Technical Field

[0001] Cross - reference to Related Applications This disclosure is proposed based on Chinese Patent Application No. 202210911342.3 filed on July 29, 2022 and Chinese Patent Application No. 202222892882.X filed on October 31, 2022, and claims the priority and advantages thereof. The entire contents of the above - mentioned applications are incorporated herein by reference.

[0002] This disclosure relates to the field of battery components, and more particularly to plates for heat exchange, battery packs, and vehicles.

Background Art

[0003] As people's awareness of environmental protection increases, more electric vehicles are emerging. As the core power component in electric vehicles, the battery is essential for the long - term and stable operation of electric vehicles.

[0004] In related technologies, water passes through a harmonica tube to cool or heat the battery. However, due to the small area for arranging heat exchange components such as the harmonica tube, the heat exchange component can only exchange heat for the middle part of the battery. As a result, the temperature at the edges of the battery is likely to become excessively high or low, reducing the stability and service life of the battery.

Summary of the Invention

Problems to be Solved by the Invention

[0005] One objective of an embodiment of this disclosure is to provide a novel technical solution for plates for heat exchange, battery packs, and vehicles.

Means for Solving the Problems

[0006] According to a first aspect of this disclosure, a heat exchange plate is provided that is applied to a battery, and the heat exchange plate is A heat exchange region and a battery region, wherein the heat exchange region is arranged around the battery region, and the battery region is the battery protruding region of the battery on the heat exchange plate, A flow path, wherein the flow path is located within a heat exchange plate, and the flow path is configured to allow a heat exchange working medium to flow through the flow path, and the flow path includes a first type flow path and a second type flow path, The first type of channel is located in the heat exchange region, while the second type of channel is distributed in the battery region.

[0007] Optionally, the length of the first type channel is shorter than the length of the second type channel, and / or the number of branches in the first type channel is less than the number of branches in the second type channel.

[0008] Optionally, the heat exchange plate further includes a first end portion and a second end portion. One end of the first type channel is connected to the first terminal, and the other end of the first type channel is connected to the second terminal. One end of the second type channel is connected to the first terminal, and the other end of the second type channel is connected to the second terminal.

[0009] When the first type of flow path extends from the first terminal to the second terminal, it branches at least once and at most four times.

[0010] When the second type of flow path is optionally extended from the first terminal to the second terminal, it branches at least twice and at most six times.

[0011] Optionally, the flow path includes multiple main sections, multiple branch sections, and multiple flow branching / converging points, where the flow branching / converging points branch or converge the flow path according to the flow direction of the working medium. The executive includes multiple first executives and second executives, where the first executives are connected to a first terminal and the second executives are connected to a second terminal. One of the first main sections passes through the first stage flow branching / converging point to form two first stage branches, one first stage branch passes through the second stage flow branching / converging point to form two second stage branches, extending into the heat exchange region, with the two second stage branches acting as the first type flow channels. One end of one of the two second-stage branches, separated from the first trunk, connects to one of the second trunks through a flow branch.

[0012] Optionally, another first-stage branch formed after one of the first main branches has passed a first-stage flow divergence / convergence point extends into the battery region, and the first-stage branch and the branch formed after the first-stage branch has passed a flow divergence / convergence point constitute a second-type flow path.

[0013] Optionally, a second stage branch serving as a first-type flow channel passes through a second-stage flow divergence / convergence point at a position close to the second main body in order to form a first-stage branch, and a first-stage branch serving as a second-type flow channel and another first-stage branch are connected to one of the second main bodies through the first-stage flow divergence / convergence point, with the first-stage flow divergence / convergence point and the second-stage flow divergence / convergence point located adjacent to each other.

[0014] Optionally, a second-stage flow branch / convergence point connected to a second-stage branch that functions as a first-type flow channel, and a second-stage flow branch / convergence point connected to a second-stage branch that functions as a second-type flow channel are arranged adjacent to each other at a position close to the second main body.

[0015] Optionally, the heat exchange plate has a first type region and a second type region, the flow paths are distributed in the first type region and the second type region, the heat exchange plate is configured to cool the battery and the working fluid flows from the flow path in the first type region to the flow path in the second type region (27), or the heat exchange plate is configured to heat the battery and the working fluid flows from the flow path in the second type region to the flow path in the first type region.

[0016] Optionally, the first type region includes a first partition and a second partition, and when a heat exchange plate is configured to cool the battery, the working fluid branches at least twice in the process of flowing from the first partition to the second type region.

[0017] Optionally, the first partition of the first type area includes a second sub-area, the second partition of the first type area includes a second sub-zone, the second type area includes a second partition area, and the second partition area is located between the second sub-zone and the second sub-area.

[0018] Optionally, the heat exchange plate has a first region and a second region, the flow channels are distributed within the first region and the second region, and the average distribution density of the flow channels in the first region is greater than the average distribution density of the flow channels in the second region.

[0019] Optionally, the heat exchange plate includes a flow channel plate and a base plate, the flow channels are arranged on the flow channel plate, and the area for arranging the flow channels in the plane on which the heat exchange plate is located is greater than 70% of the area of ​​the flow channel plate.

[0020] Optionally, the width of the channel is less than 15 mm.

[0021] According to a second aspect of this disclosure, a battery pack, the battery pack is A heat exchange plate according to the first embodiment, A battery module, wherein a heat exchange plate covers the battery module and the battery module is located at a position corresponding to a battery area, and a battery pack including the battery module is provided.

[0022] Optionally, the battery module includes a first module and a second module, the first module and the second module are arranged side by side, and the heat exchange area of the heat exchange plate surrounds the entire outer periphery of the first module and the second module.

[0023] According to a third aspect of an embodiment of the present disclosure, a vehicle including the heat exchange plate according to the first aspect or

[0024] the battery pack according to the second aspect is provided.

[0025] The technical effects of the present disclosure are as follows.

[0026] Embodiments of the present disclosure provide a heat exchange plate, the heat exchange plate includes a heat exchange area and a battery area, the heat exchange area is arranged around the battery area, and a flow path is arranged in the heat exchange plate. The flow path is configured to allow a heat exchange working medium to flow through the flow path. A first type flow path is located in the heat exchange area, and a second type flow path is located in the battery area. When the first type flow path surrounds the battery area and is located on the outer periphery of the battery protruding area, the first type flow path can not only exchange heat for the area around the battery, but also ensure the heat exchange of the heat exchange plate for the entire battery, and improve the heat exchange efficiency of the heat exchange plate.

[0027] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0028] The accompanying drawings are incorporated herein and constitute part thereof, illustrating embodiments consistent with this disclosure and are used in conjunction with this disclosure to illustrate the principles of this disclosure. [Brief explanation of the drawing]

[0029] [Figure 1] This is a first schematic diagram illustrating a partition for a heat exchange plate according to one embodiment of the present disclosure. [Figure 2] This is a second schematic diagram illustrating a partition for a heat exchange plate according to one embodiment of the present disclosure. [Figure 3] This is a top view of a battery pack according to one embodiment of the present disclosure. [Figure 4] This is a schematic diagram of the entire heat exchange plate according to one embodiment of the present disclosure. [Figure 5] This is a schematic diagram of the inlet and outlet assembly of a heat exchange plate according to one embodiment of the present disclosure. [Figure 6] This is a schematic diagram of the alignment between the battery core and the heat exchange plate of a battery pack according to one embodiment of the present disclosure. [Figure 7] This is a schematic diagram of the flow direction of the flow path of a heat exchange plate according to one embodiment of the present disclosure. [Figure 8] This is a schematic diagram of a flow branching point of a heat exchange plate according to one embodiment of the present disclosure. [Figure 9] This is a schematic diagram of a portion of a heat exchange plate according to one embodiment of the present disclosure. [Figure 10] This is a schematic diagram of a branch portion of a first heat exchange module of a heat exchange plate according to one embodiment of the present disclosure. [Figure 11] This is a schematic diagram of a branch portion in a second heat exchange module of a heat exchange plate according to one embodiment of the present disclosure. [Figure 12] This is a top view showing a divided battery structure according to one embodiment of the present disclosure. [Figure 13] This is a schematic diagram illustrating a partition for a heat exchange plate according to one embodiment of the present disclosure. [Figure 14]This is a first schematic diagram of the flow direction (a) and partition (b) of the flow path of a heat exchange plate according to one embodiment of the present disclosure. [Figure 15] This is a second schematic diagram of the flow direction (a) and partition (b) of the flow path of a heat exchange plate according to one embodiment of the present disclosure. [Figure 16] This is a schematic diagram of the base plate and flow path plate. [Figure 17] This is a schematic diagram of a turning point for a heat exchange plate according to one embodiment of the present disclosure. [Modes for carrying out the invention]

[0030] Various exemplary embodiments of this disclosure are described below in detail with reference to the accompanying drawings. Note that, unless otherwise specified, the reverse arrangement of components and processes, formulas, and numerical values ​​described in the embodiments do not limit the scope of this disclosure.

[0031] The following description of at least one exemplary embodiment is illustrative and in no way constitutes any limitation to the Disclosure or any application or use thereof.

[0032] Techniques, methods, and devices known to those skilled in the art may not be discussed in detail herein, but where appropriate, such descriptions, methods, and devices shall be considered as part of this specification.

[0033] In all examples shown and discussed herein, any specific values ​​are illustrative only and should not be construed as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0034] Please note that similar reference numbers and reference letters refer to similar items in the following attached drawings. Therefore, once an item is defined in one attached drawing, it does not need to be discussed further in subsequent attached drawings.

[0035] Referring to Figures 1 to 5, embodiments of the present disclosure provide a heat exchange plate applicable to a battery. The heat exchange plate is A heat exchange region 203 and a battery region 204, wherein the heat exchange region is arranged around the battery region, and the battery region is the battery protruding region of the battery on the heat exchange plate, A flow path 21 is provided, the flow path 21 is located within a heat exchange plate, the flow path is configured to allow a heat exchange working medium to flow through the flow path, and the flow path includes a first type flow path 100 and a second type flow path.

[0036] The first type of channel 100 is located in the heat exchange region 203, and the second type of channel is distributed in the battery region 204.

[0037] Specifically, when the flow path 21 extends within the heat exchange plate, the outermost first type flow path 100 essentially branches once or twice and then ceases to branch, instead circling around the outer edge of the heat exchange plate and finally converging again near the flow path outlet. These flow paths are configured to balance the temperature of the working fluid at the ends of the flow. These flow paths can play a particularly good role when a phase-change cooled working fluid is used. The volume of the working fluid changes significantly after the phase change, which can easily lead to problems such as deposition, poor circulation, and temperature concentration. This problem is likely to become very serious at the flow convergence end. The working fluid in the outermost circulating flow path can branch fewer times, thereby having a relatively smaller phase change in the working fluid in the outermost flow path, and can be configured to balance the temperature and phase state of the working fluid in the other flow paths at the end of the entire circulation. This ensures smoothness and uniformity of the entire circulation.

[0038] When the first type channel 100 surrounds the battery area and is located on the outer periphery of the battery protrusion area, the first type channel can not only exchange heat for the area around the battery, but also ensure heat exchange for the heat exchange plate for the entire battery and improve the heat exchange efficiency of the heat exchange plate.

[0039] The first type flow path 100 may be used as the first circulation flow path in the heat exchange plate. In the middle section of the heat exchange plate, a second type flow path, including a second circulation flow path, a third circulation flow path, and a fourth circulation flow path, may also be formed to improve the heat exchange balance of the heat exchange plate.

[0040] Optionally, the length of the first type channel is shorter than the length of the second type channel, and / or The number of branches in the Type 1 channel is less than the number of branches in the Type 2 channel.

[0041] Specifically, the first type channel 100 is located within the heat exchange region 203, meaning that the first type channel 100 circles around the outer edge of the heat exchange plate, thereby positioning the second type channel inside the first type channel 100. However, after the first type channel 100 branches once or twice, it essentially no longer branches. Furthermore, while the first type channel 100 branches infrequently, the second type channel needs to branch and change direction multiple times on the heat exchange plate, ensuring that the channels are evenly distributed across the heat exchange plate. Therefore, to ensure a balanced distribution of channels on the heat exchange plate, the length of the first type channel is shorter than the length of the second type channel, and the number of branches in the first type channel is fewer than the number of branches in the second type channel.

[0042] Optionally, referring to Figures 4 and 5, The heat exchange plate further includes a first end portion 221 and a second end portion 222.

[0043] One end of the first type channel is connected to the first terminal 221, and the other end of the first type channel is connected to the second terminal 222.

[0044] One end of the second type channel is connected to the first terminal 221, and the other end of the second type channel is connected to the second terminal.

[0045] Specifically, when the heat exchange plate 2 exchanges heat for the battery, the first type region 26 on the heat exchange plate 2 may correspond to the post region of the battery in order to ensure the heat exchange effect of the heat exchange plate 2 for the battery. The actual structure of the battery may consist of a group of battery cores, or it may consist of multiple groups of arranged battery cores. For example, referring to Figure 6, when the heat exchange plate 2 exchanges heat for a battery composed of two groups of battery cores, the heat exchange plate 2 can be divided into a first heat exchange module and a second heat exchange module. The first heat exchange module corresponds to a group of battery cores, and the second heat exchange module corresponds to another group of battery cores. In addition, at least a portion of the flow path 21 is curved in each of the first and second heat exchange modules, thereby increasing the area for arranging the flow path 21 in the first and second heat exchange modules. This increases the effective heat exchange area of ​​the heat exchange plate 2 and the amount of heat exchanged by the heat exchange plate 2 for the battery.

[0046] Specifically, when the first type flow path 100 is configured to exchange heat in the region around the battery, one end of the first type flow path is connected to a first terminal 221, and the other end of the first type flow path is connected to a second terminal. Thus, the working fluid in this flow path can flow into the first type flow path from the first terminal 221 or the second terminal 222, extend within the first type flow path, and flow out of the first type flow path from the second terminal 222 or the first terminal 221, thereby ensuring that the temperature around the battery is within an appropriate range.

[0047] When the second type flow path is configured to exchange heat in the middle section of the battery, one end of the second type flow path is connected to the first end 221, and the other end of the second type flow path is connected to the second end 222. Thus, the working fluid in this flow path can flow into the second type flow path from the first end 221 or the second end 222, bend and extend within the second type flow path, and flow out of the second type flow path from the second end 222 or the first end 221, thereby ensuring that the temperature in the middle section of the battery remains stable.

[0048] When the first type flow path 100 extends from the first terminal 221 to the second terminal 222, it branches at least once and up to four times.

[0049] Specifically, referring to Figures 1 and 2, the heat exchange plate includes a first heat exchange module and a second heat exchange module, both of which include a first type region 26. The first type region 26 of the first heat exchange module includes a first subzone 2621 and a first subregion 2611, and the first type region 26 of the second heat exchange module includes a second subzone 2622 and a second subregion 2612.

[0050] Along the direction from the first terminal 221 to the second terminal 222, the first circulation channel 100 extends to pass through the first subzone 2621, the first partition region 271, the first subzone 2611 and the second subzone 2622, the second partition region 272 and the second subzone 2612 in that order, and then extends back along the edge of the heat exchange plate to pass through the second partition region 272, the second subzone 2622, the first subzone 2611, the first partition region 271 and the first subzone 2621.

[0051] Specifically, along the direction from the first terminal 221 to the second terminal 222, the first circulation channel 100 branches for the first time when it extends to pass through the first subzone 2621 for the first time, and converges for the first time when it extends to pass through the first subzone 2621 for the second time.

[0052] In addition, the first type area 26 may include a first partition 261 and a second partition 262. The first partition 261 includes a first sub-area 2611 and a second sub-area 2612, and the second partition 262 includes a first sub-zone 2621 and a second sub-zone 2622.

[0053] When the second type of flow path is optionally extended from the first terminal 221 to the second terminal 222, it branches at least twice and at most six times.

[0054] Specifically, referring to Figure 7, the second type of flow path may include a second circulation flow path 200, a third circulation flow path 300, and a fourth circulation flow path 400.

[0055] In the second circulation channel 200, along the direction from the first terminal portion 221 to the second terminal portion 222, the second circulation channel 200 extends along the edge of the heat exchange plate from the first terminal portion 221 to the second sub-region 2612, bends and extends in the second sub-region 2612 and the second partition region 272, and then extends back to the second terminal portion 222 along the edge of the heat exchange plate.

[0056] Specifically, along the direction from the first terminal 221 to the second terminal 222, the second circulation channel extends from the first terminal 221, passing sequentially through the first subzone 2621, the first partition region 271, the first subzone 2611, the second subzone 2622, the second partition region 272, and the second subzone 2612. Then, the second circulation channel bends and extends in the second subzone 2612 and the second partition region 272, further extending to pass sequentially through the second subzone 2622, the first subzone 2611, the first partition region 271, and the first subzone 2621, before returning to the second terminal 222.

[0057] The second circulation channel changes direction six times in the second sub-region 2612 and the second partition region 272.

[0058] Specifically, the second circulation channel makes its first branch when it extends to pass through the first subzone 2621 for the first time, makes its second and third branches in the second subregion 2612, makes its first convergence when it extends back to the second terminal 222 from the second partition region 272, and makes its second and third convergence when it extends to pass through the first subzone 2621 for the second time.

[0059] In the third circulation channel 300, along the direction from the first terminal 221 to the second terminal 222, the third circulation channel extends along the edge of the heat exchange plate from the first terminal 221 to the second subzone 2622, bends and extends in the second subzone 2622 and the second partition region 272, and then extends back to the second terminal 222 along the edge of the heat exchange plate.

[0060] Specifically, along the direction from the first terminal 221 to the second terminal 222, the third circulation channel extends from the first terminal 221, passing sequentially through the first subzone 2621, the first partition region 271, the first subzone 2611, and the second subzone 2622. Then, the third circulation channel bends and extends in the second subzone 2622 and the second partition region 272, further extending to pass sequentially through the second subzone 2622, the first subzone 2611, the first partition region 271, and the first subzone 2621, before returning to the second terminal 222.

[0061] The third circulation channel changes direction four times in the second subzone 2622.

[0062] Specifically, along the direction from the first terminal 221 to the second terminal 222, the third circulation channel makes its first branch when it passes through the first subzone 2621 for the first time, its second and third branches when it extends to pass through the second subzone 2622 for the first time, its first and second convergences in the second partition region 272, and its third and fourth convergences when it extends to pass through the first subzone 2621 for the second time.

[0063] Along the direction from the first terminal 221 to the second terminal 222, the fourth circulation channel 400 extends from the first terminal 221, passing sequentially through the first subzone 2621, the first partition region 271, and the first subzone 2611, then extends back to pass through the first partition region 271, extends to the first subzone 2621, then bends and extends to enter the first partition region 271 and the first subzone 2611, and finally the fourth circulation channel extends back to pass through the first partition region 271 again, extends to the first subzone 2621, and returns to the second terminal 222.

[0064] In the process of the fourth circulation channel bending and extending so as to enter the first partition region 271 and the first sub-region 2611, the fourth circulation channel changes direction at least eight times.

[0065] Specifically, the fourth circulation channel makes its first branch when it extends to pass through the first subzone 2621 for the first time, its second and third branch when it extends to pass through the first subregion 2611 for the first time, its fourth branch when it extends to pass through the first subzone 2621 for the second time, its first and second convergence when it extends to pass through the first subregion 2611 for the second time, and its third and fourth convergence when it extends to pass through the first subzone 2621 for the third time.

[0066] In one embodiment, referring to Figures 8 to 11, the flow path includes multiple main sections, multiple branch sections, and multiple flow branching / converging points, where the flow branching / converging points branch or converge the flow path according to the flow direction of the working medium.

[0067] The executive includes a plurality of first executives 31 and second executives 41, where the first executives 31 are connected to a first terminal and the second executives 41 are connected to a second terminal.

[0068] One of the first stems 31 passes through the first stage flow branching / converging point 2121 to form two first stage branches 101, and one first stage branch 101 passes through the second stage flow branching / converging point 2122 to form two second stage branches 102, extending into the heat exchange region, with the two second stage branches 102 acting as a first type flow channel, and the first stage flow branching / converging point 2121 and the second stage flow branching / converging point 2122 forming a flow branching point 212.

[0069] One end of each of the two second-stage branches 102, which are separated from the first trunk 31, is connected to one of the second trunks 41 through a flow branch.

[0070] In one embodiment, another first-stage branch 101, formed after one of the first main sections 31 has passed a first-stage flow branching / converging point 2121, extends into the battery region, and the first-stage branch 101 and the branch formed after the first-stage branch has passed the flow branching / converging point constitute a second-type flow path.

[0071] Furthermore, a branch formed after another first trunk 31 extends into the battery region through a second-stage flow branching / converging point 2122, and the branch may also be a second-type flow path.

[0072] Optionally, in order to reduce the temperature and volume differences caused by the phase change of the working medium and to improve energy utilization in the heat exchange plate, a second stage branch 102 acting as a first type flow channel passes through a second stage flow branch / convergence point 2122 at a position close to the second main body 41 to form a first stage branch 101, and a first stage branch 101 and another first stage branch 101 acting as a second type flow channel are connected to one of the second main bodies 41 through a first stage flow branch / convergence point 2121, with the first stage flow branch / convergence point 2121 and the second stage flow branch / convergence point 2122 located adjacent to each other.

[0073] Optionally, a second-stage flow branch / convergence point 2122 connected to a second-stage branch 102 that functions as a first-type flow path and a second-stage flow branch / convergence point 2122 connected to a second-stage branch 102 that functions as a second-type flow path are arranged adjacent to each other at a position close to the second main body 41, which also reduces the temperature and volume differences caused by the phase change of the working medium and improves energy utilization in the heat exchange plate.

[0074] One embodiment of the present disclosure is a battery tray, wherein the battery tray is Heat exchange plate and A battery tray is provided, which includes a battery module, wherein a heat exchange plate covers the battery module, and the battery module is positioned in a location corresponding to the battery area.

[0075] Specifically, the battery module is located in a position corresponding to the battery area. When the first type flow path 100 surrounds the battery area and is located on the outer periphery of the battery protrusion area, the first type flow path can not only exchange heat for the area around the battery module but also ensure heat exchange for the heat exchange plate for the entire battery. In the middle of the heat exchange plate, the second type flow path, including the second, third, and fourth circulation flow paths, is configured to exchange heat for the majority of the battery module in order to improve the heat exchange balance of the heat exchange plate.

[0076] Optionally, the battery module includes a first battery module and a second battery module, the first and second battery modules are arranged side by side, and the heat exchange area of ​​the heat exchange plate surrounds the entire outer perimeter of the first and second battery modules.

[0077] Specifically, referring to Figure 6, the battery pack includes a heat exchange plate 2 and a plurality of battery cores 1. Each battery core 1 has two ends with posts. The plurality of battery cores are arranged along a first direction, which may be the X direction in Figure 1 in order to increase the energy density of the battery pack. The heat exchange plate is positioned on one or two sides of the battery cores along a second direction. The second direction may be the Z direction in Figure 1. The sides of the plurality of battery cores 1 along the second direction form a large surface area of ​​the battery cores 1. The heat exchange plate is positioned close to one or two large surfaces of the battery cores 1, which ensures the heat exchange effect of the heat exchange plate for the battery cores.

[0078] In addition, the multiple battery cores 1 may form a first battery module 11 and a second battery module 12. The second battery module 12 is located on the side of the first battery module 11 away from the inlet and outlet assemblies 22, and the first and second terminals 221 and 222 are located on the inlet and outlet assemblies 22. The first battery module 11 can correspond to a first heat exchange module on a heat exchange plate, and the second battery module 12 can correspond to a second heat exchange module on a heat exchange plate.

[0079] Specifically, the flow path of the first type region 26 may be facing the first battery module 11 and may be close to the inlet and outlet assemblies 22, that is, the flow path of the first type region 26 is located at the near end of the heat exchange plate. The flow path 21 of the second type region 27 may be far from the inlet and outlet assemblies 22, that is, the flow path of the second type region 27 is located at the far end of the heat exchange plate. To ensure a balanced heat exchange effect at the near and far ends of the heat exchange plate, the flow rate of the flow path 21 at the far end can be increased, for example, the flow rate of the flow path 21 opposite the second battery module 12 may be set to a second flow rate, and the first flow rate may be smaller than the second flow rate.

[0080] Optionally, the direction in which the posts at the two ends of the battery core are connected is a third direction. The third direction may be the Y direction in Figure 1. That is, each battery core 1 may extend along the third direction to form a long, strip-shaped battery core. The first, second, and third directions may be parallel to the width, height, and length directions of the battery core 1, respectively. When the first, second, and third directions are perpendicular to each other, the multiple battery cores 1 may form a compact battery pack structure to ensure the energy density of the battery pack.

[0081] Optionally, the heat exchange plate is either a lower plate or an upper cover.

[0082] Specifically, the heat exchange plate can be positioned on one or two sides of the battery core along a second direction. When the heat exchange plate can be positioned on one side of the battery core along a second direction, for example, when the heat exchange plate is positioned on the lower sides of multiple battery cores, the heat exchange plate can form the lower plate of the battery pack. On the one hand, when the heat exchange plate is in contact with the battery core, the heat exchange effect of the battery core can be ensured. On the other hand, the battery pack can be well protected when the bottom of the battery pack is subjected to impact. When the heat exchange plate is positioned on the upper sides of multiple battery cores, the heat exchange plate can form the upper cover of the battery pack. Similarly, when the heat exchange plate is in contact with the battery core, the heat exchange effect of the battery core can be ensured. On the other hand, the battery pack can be protected.

[0083] One embodiment of the present disclosure includes a heat exchange plate, or We will also offer vehicles that include battery packs.

[0084] This technical solution further provides a heat exchange channel device that can be used in electric vehicles, and the heat exchange channel device can provide a good heat exchange effect for the battery. When the battery needs to be heated, a heat exchange agent having heat can be conducted through the channel 21 to various areas of the battery to assist in heating the battery. When the battery needs to be cooled, the channel 21 can be used in the reverse direction, thereby conducting a heat exchange agent having low temperature in the reverse direction through the channel 21 to various areas of the battery to assist in cooling the battery.

[0085] Based on the heat exchange channel device, a heat exchange plate 2 and a battery tray can also be formed, and the battery structure can also be integrated. The heat exchange channel device provided by this technical solution is designed to provide stable heat exchange performance for batteries of new energy electric vehicles and to provide a better temperature environment for the battery.

[0086] As shown in Figure 16, this technical solution provides a heat exchange plate 2. The heat exchange plate 2 has a first terminal portion 221, a second terminal portion 222, and a flow path 21. The flow path 21 converges at the first terminal portion 221 and the second terminal portion 222 through a flow convergence end.

[0087] The heat exchange plate 2 may include a flow channel plate 24 and a base plate 23. Various flow channels 21 are provided on the flow channel plate 24. The flow channels 21 extend inward from the flow convergence end of the flow channel plate 24. The flow channels 21 are branched by flow branching / converging points to form more stages of branch sections. These flow channels 21 are also then positioned through reversal points, and the branch sections cover the entire flow channel plate 24 to achieve flow heat exchange in each region.

[0088] As shown in Figure 16, the flow path plate 24 and the base plate 23 are combined to form a heat exchange plate 2. On the flow path plate 24, the flow path 21 may have a groove structure and an unsealed top surface. After the base plate 23 covers the flow path plate 24, the base plate 23 can form a top seal on the flow path 21. In this way, the base plate 23 and the flow path 21 together form the heat exchange plate 2. The first end portion 221 and the second end portion 222 can be formed by combining end portion components provided on the base plate 23 and the flow path plate 24. The end portion components are provided with the first end portion 221 and the second end portion 222. After the base plate 23 covers the flow path plate 24, the first and second flow convergence ends of the flow path 21 can be connected to the first end portion 221 and the second end portion 222.

[0089] The design philosophy of each feature of the heat exchange plate 2 in this solution can be divided into different categories. These categories represent different technical features that this solution focuses on. The flow path 21 is designed based on the focused technical features to obtain a more uniform heat exchange solution.

[0090] First aspect This technical solution allows the heat exchange plate 2 to be divided into different regions in order to perform different degrees of heat exchange processing on different areas. Based on the layout characteristics that the working medium flows into the flow path 21 from the terminal end and then into the heat exchange region, the flow path 21 can be selectively arranged according to the thermal conditions in the different regions.

[0091] In practical applications, different battery structures are located in different regions of the integrated battery structure, resulting in different degrees of heat generation during operation. This is related to the arrangement and configuration of the battery electrode cores. As shown in Figure 2, the heat exchange plate 2 can include a first type region 26 and a second type region 27. The first type region 26 corresponds to a region where the electrode core generates relatively high heat in the integrated battery structure, and the second type region 27 corresponds to a region where the electrode core generates relatively low heat in the integrated battery structure. In the embodiment shown in Figure 2, the battery electrode cores can be arranged in two rows as shown in Figure 12. More heat is generated because tabs are typically provided at the two ends of the electrode core for electrical connections. Therefore, the leftmost longitudinal region in Figure 3 is the first type region 26, the wide longitudinal region in the middle is the first type region 26, and the rightmost longitudinal region is the first type region 26. All three of these regions correspond to the large heat generation regions at the two ends of the electrode core.

[0092] When the electrode cores of the integrated battery structure are arranged in a different manner, or when the electrode cores are electrically connected in a different manner, the location and number of the first type region 26 and the second type region 27 will differ. This technical solution uses the case shown in Figures 12 and 2 as an example to illustrate the design features of this part.

[0093] The heat exchange plate 2 is provided with a flow path 21, which is configured to allow the working fluid to flow through. The working fluid can exchange heat and gradually exchanges heat as it flows through different regions. The flow path 21 extends as a whole to the first type region 26 and the second type region 27.

[0094] The heat exchange plate 2 can be switched between two states: a cooling mode and a heating mode. In these two states, the heat exchange plate 2 or the pump device causes the working medium to flow in opposite directions, thereby achieving the objective of preferentially performing heat exchange on the area.

[0095] When the heat exchange plate 2 is in cooling mode, the flow path 21 is designed to allow the working fluid to flow from the first type region 26 to the second type region 27. That is, the flow path 21 is designed so that the working fluid first flows into the flow path 21 in the first type region 26, and then flows into the flow path 21 in the second type region 27. In this way, the working fluid can first perform heat exchange in the first type region 26, and the working fluid preferentially absorbs the heat generated by the battery structure corresponding to the first type region 26, after which the heat exchange capacity of the working fluid decreases. Subsequently, the working fluid flows to the second type region 27 and exchanges the heat generated by the battery corresponding to this region. Finally, the working fluid flows to the terminal and flows out from the heat exchange plate 2.

[0096] On the other hand, when the heat exchange plate 2 is in heating mode, the flow path 21 is designed so that the working fluid can flow from the second type region 27 to the first type region 26. That is, during reverse flow, the flow path 21 is designed so that the working fluid first flows into the flow path 21 in the second type region 27, and then flows into the flow path 21 in the first type region 26. The working fluid first exchanges heat with the second type region 27 and can dissipate the heat into the space where the battery structure corresponding to the second type region 27 is located. After that, the heat exchange capacity of the working fluid decreases and it flows into the first type region 26. The working fluid dissipates the remaining heat in the first type region 26 into the space where the battery structure is located, and then flows back to the terminal.

[0097] The heating of the battery electrode core is usually constant. Regardless of the external environment and whether the battery is discharged or charged, as shown in Figure 12, the portion of the electrode core with tabs and electrical connections is always a region that generates higher heat, while the intermediate region of the electrode core generates moderate heat, i.e., the portion of the electrode core without electrical connections and tabs does not generate heat easily. When heating is required, the region of the electrode core without tabs is often cooler and requires more heat. When cooling is required, the region of the electrode core with tabs is often hotter and requires better cooling. The advantage of this design is that the flow channels 21 of the heat exchange plate 2 are arranged based on the operating characteristics of the battery electrode core according to different regions of the structure that generate different heat. Furthermore, the flow direction of the working fluid used in heating mode and cooling mode is reversed. During heat dissipation, the working fluid first flows along the flow channels 21 to regions with higher heat. During heating, the working fluid first flows along the flow channels 21 to regions with lower heat. This allows the working fluid to preferentially flow to regions that require heat exchange.

[0098] Optionally, the first type region 26 corresponds to a first location of the battery, and the second type region 27 corresponds to a second location of the battery. When the battery is operating, the heat generated by the battery at the first location is fundamentally greater than the heat generated by the battery at the second location. Corresponding to the embodiment shown in Figure 12, the first location corresponds to the left vertical bar, the middle vertical bar, and the right vertical bar shown in Figure 2. The second location may correspond to the area between the left vertical bar and the middle vertical bar, or to the area between the right vertical bar and the middle vertical bar. In other battery and electrode core distribution solutions, the arrangement and number of the first and second locations may vary, but this does not deviate from the flow path 21 arrangement concept described above. The flow path 21 can always be directed into the first type region 26, and then extended into the second type region 27 without repeated extension between the first type region 26 and the second type region 27.

[0099] As shown in Figure 17, the heat exchange plate 2 includes a first flow convergence end and a second flow convergence end. The first flow convergence end is a connection point where the flow path 21 converges to a first terminal 221. The second flow convergence end is a connection point where the flow path 21 converges to a second terminal 222.

[0100] When the heat exchange plate 2 is configured to heat the battery, the working fluid can flow into the heat exchange plate 2 from the second flow convergence end. When the layout of the flow path 21 is feasible, the working fluid preferentially flows into the second type region 27, which has a lower temperature, to heat the second type region 27, and then flows into the first type region 26. Finally, the working fluid can flow out from the first flow convergence end after convergence. Prioritizing heating of the location corresponding to the second type region 27 can better protect the battery and provide a sufficient operating temperature for the battery. In particular, when the battery module has a self-heating function, the heat exchange plate 2 can cooperate with the self-heating function to provide better thermal protection to the central region of the electrode core, where it is difficult to generate heat and prevent excessively low temperatures.

[0101] When the heat exchange plate 2 is configured to cool the battery module, the working fluid can flow into the heat exchange plate 2 from the first flow convergence end. When the layout of the flow path 21 is feasible, the working fluid preferentially flows into the first type region 26 which has a higher temperature to cool the first type region 26, and then flows into the second type region 27.

[0102] In practical applications, as shown in Figure 2, the first and second flow convergence ends are concentrated on the left side of the heat exchange plate 2. When arranging the flow channels 21, it may not be possible to arrange the flow channels 21 in the ideal manner described above due to limitations in panel space. In the embodiment shown in Figure 2, for the three regions 2622, 2612, and 272 located on the right side, 272 can be preferentially heated or 2622 and 2612 can be preferentially cooled according to an optional configuration of the flow channels 21. In the three regions 2621, 2611, and 271 located on the left side near the flow convergence ends and inlet and outlet, the above optional configuration cannot be implemented due to the relative density of the flow channels 21. In this regard, the following embodiment can be adopted: the flow channel 21 is introduced from the first flow convergence end, then first into region 2611, then extended to the two regions 271 and 2621, and finally returned to the second flow convergence end.

[0103] Optionally, after the flow path 21 is introduced from the first flow convergence end, the flow path can be branched through flow branching to better achieve temperature control over the entire surface. For example, the working medium flowing from the first flow convergence end to the first type region 26 can be branched into more branched flow paths 21 in the first type region 26. Subsequently, when the working medium flows into the second type region 27, flow convergence and branching are not required, as shown in region 271 in Figure 3. Finally, after the working medium has entered region 2621 along the flow path 21, the flow path 21 can be converged to collect the working medium, thereby allowing it to flow out from the second flow convergence end.

[0104] In the process in which the working medium passes through the first type region 26 and the second type region 27 and then converges at the second flow convergence end, the working medium is branched and converged at least once.

[0105] When the working fluid is configured to heat the battery module, that is, when the working fluid flows in from the second flow convergence end and out from the first flow convergence end, the flow path 21 has expansion characteristics opposite to cooling. The working fluid first branches once or twice to distribute into various regions along the pipeline, and then converges at least once to flow to the first flow convergence end.

[0106] In particular, the working fluid in this solution can be selected as a cooling working fluid that can be switched between gas and liquid phases. This type of cooling working fluid can effectively perform heat exchange through phase state changes and has higher heat exchange efficiency than conventional water cooling, coolants, and other methods. In contrast, if the cooling working fluid becomes concentrated in one region and experiences a significant phase change due to the phase state change of the cooling working fluid, other regions will not be able to obtain a good heat exchange effect. In this regard, this solution improves the uniformity of the working fluid flow in the flow path 21 by using flow branching methods such as branching one flow path into two, and branching two flow paths into four, whenever possible. Optionally, this solution uses multiple parallel flow paths 21 whose lengths vary as evenly as possible to jointly perform heat exchange in the first type region 26 and the second type region 27, further reducing concentrated phase changes of the working fluid caused by uneven flow.

[0107] As shown in Figures 1 and 2, in the left region near the flow convergence end, i.e., in the three regions 2621, 271, and 2611, due to the crowded space, this solution can preferentially place the flow branching and flow convergence points in two regions 2621 and 2611. These two regions correspond to the high-heating regions of the battery. Performing branching and convergence in these regions helps reduce the high-speed and concentrated heat exchange of the working fluid in the narrow space, thereby allowing the working fluid to perform heat exchange more evenly in these regions. For example, the working fluid flowing from the first flow convergence end can converge at the corner of region 2621, where the first branching occurs, and then a second branching can occur at the top of 2611. Subsequently, some flow paths 21 can branch again at the bottom of region 271, while other flow paths 21 do not need to branch. Finally, when the flow paths 21 extend to the bottom of region 2621, the flow paths can converge and then return to the second flow convergence end. Typically, flow convergence can be performed once or twice. The above explanation uses heat dissipation as an example. During heating, the forms of branching and convergence are completely opposite.

[0108] Optionally, as shown in Figures 1 and 2, the space is relatively large in the right region away from the flow convergence end, i.e., in the three regions 2622, 2612, and 272. This solution allows for a preferential and even distribution of flow branching and convergence points at the upper and lower ends of the three regions, and the number of flow branching and convergence points can correspondingly increase. Using the cooling solution as an example, the flow path 21 extending from the first flow convergence end on the left side to the right side can branch separately and extend into regions 2622 and 2612. In these two regions, the flow path 21 can extend linearly and extend longitudinally over most of the area of ​​the two regions. Subsequently, the flow path 21 can fold back into region 272 between 2622 and 2612. The flow path 21 typically extends linearly through region 272, and finally, the parallel flow paths 21 converge at the lower side of region 272. Finally, the flow path 21 extends to the left and returns to the second flow convergence end. In this solution, the flow path 21 can branch two or three times to achieve the layout characteristics of a large area, parallel and long-distance extension. The flow path then converges two or three times to converge to the main body and returns to the flow convergence end. Similarly, in the heating mode, the working fluid flows in from the second flow convergence end and flows directly to the lower part of region 272, branching multiple times to form multiple parallel flow paths.

[0109] In particular, among the flow channels 21 introduced from the first flow convergence end, the outermost flow channel 21 essentially does not branch after the initial branching, but instead circles around the outer edge of the heat exchange plate 2 and finally converges again at a position close to the second flow convergence end. These flow channels 21 are configured to balance the temperature of the working fluid at the ends of the flow. These flow channels 21 can play a particularly good role when a phase-change cooled working fluid is used. The volume of the working fluid changes significantly after the phase change, which can easily lead to problems such as deposition, poor circulation, and temperature concentration. This problem is likely to become very serious at the flow convergence end. The working fluid in the outermost circulating flow channel 21 has a relatively small phase change and can be configured to balance the temperature and phase state of the working fluid in the other flow channels 21 at the ends of the entire circulation. This ensures the smoothness and uniformity of the entire circulation.

[0110] According to a first aspect of this disclosure, the solution provides a heat exchange plate applied to a battery, the heat exchange plate is First type region 26 and second type region 27, The system includes a flow path 21, which is configured to allow a working medium to flow, and which is distributed in a first type region and a second type region.

[0111] The heat exchange plate 2 is configured to cool the battery, and the working fluid flows from the flow path 21 of the first type region 26 to the flow path 21 of the second type region 27, or The heat exchange plate 2 is configured to heat the battery, and the working fluid flows from the flow path 21 in the second type region 27 to the flow path 21 in the first type region 26.

[0112] Optionally, the first type region is used to correspond to a first location on the battery, and the second type region is used to correspond to a second location on the battery. During battery operation, the temperature at the first location is higher than the temperature at the second location.

[0113] Optionally, the heat exchange plate 2 includes a first flow convergence end and a second flow convergence end.

[0114] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second flow convergence end into the second type region 27, passes through the first type region 26, and converges within the first flow convergence end.

[0115] Optionally, the heat exchange plate 2 includes a first flow convergence end and a second flow convergence end.

[0116] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first flow convergence end into the first type region 26, passes through the second type region 27, and converges within the second flow convergence end.

[0117] In a process in which the working medium optionally flows from a first flow convergence end into a first type region 26, passes through a second type region 27, and then converges within a second flow convergence end, the working medium branches at least once and / or converges at least once.

[0118] Optionally, the working medium flows from the second flow convergence end into the second type region 27, passes through the first type region 26, and converges within the first flow convergence end, with the working medium branching at least twice and / or converging at least once.

[0119] In a process in which the working medium optionally flows from a second flow convergence end into a second type region 27, passes through a first type region 26, and then converges within the first flow convergence end, the working medium branches at least once and / or converges at least once.

[0120] Optionally, the first type region 26 includes a first partition 261 and a second partition 262.

[0121] The second type region 27 includes the first partition region 271.

[0122] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first partition 261 of the first type region 26 to the first partition region 271 of the second type region 27, and / or The working medium flows from the second partition 262 of the first type area 26 to the first partition area 271 of the second type area 27.

[0123] When the heat exchange plate 2 is optionally configured to cool the battery, the working medium branches at least once in the process of flowing from the first partition 261 of the first type region 26 to the first partition region 271 of the second type region 27.

[0124] Optionally, the process in which the working medium flows from the first partition 261 of the first type region 26 to the first partition region 271 of the second type region 27 involves at least one branching and at least one convergence.

[0125] When the heat exchange plate 2 is optionally configured to cool the battery, the working medium is branched at least once in the first partition 261 and then flows into the first partition region 271 of the two-type region 27.

[0126] When the heat exchange plate 2 is optionally configured to cool the battery, the working medium branches at least once in the first partition 261, then flows into the first partition region 271 of the second type region 27, and converges at least once in the first partition region 271 of the second type region 27.

[0127] Optionally, the first partition 261 of the first type region 26 includes the first sub-region 2611, the second partition 262 of the first type region 26 includes the first sub-zone 2621, and the first partition region 271 is located between the first sub-zone 2621 and the first sub-region 2611.

[0128] Optionally, the working medium experiences at least one open-loop circulation in the first subzone 2621, the first partition region 271, and the first subregion 2611.

[0129] Optionally, this open-loop circulation includes the working medium flowing from the first subzone 2621 to the first partition region 271, then to the first subzone 2611, then to the first partition region 271, then to the first subzone 2621, then to the first partition region 271, then to the first subzone 2611, then to the first partition region 271, and then to the first subzone 2621.

[0130] Optionally, in the open-loop circulation process, the working medium branches at least twice and converges at least once.

[0131] Optionally, the working medium performs a first branch in the first sub-region 2611, a second branch in the first sub-zone 2621, and converges once in the first sub-region 2611.

[0132] Optionally, the first type region 26 includes at least two sub-regions, and / or the second type region 27 includes at least two sub-zones.

[0133] Optionally, when the heat exchange plate 2 is in cooling mode, the working fluid branches at least twice in the process of flowing from the first partition 261 to the second type region 27.

[0134] Optionally, when the heat exchange plate 2 is in cooling mode, the working fluid branches at least twice in the process of flowing from the first partition 261 to the second type region 27.

[0135] Optionally, the process in which the working medium flows from the first partition 261 to the second type region 27 involves at least two branching and at least one convergence.

[0136] Optionally, the first type region 26 includes a first partition 261 and a second partition 262.

[0137] The second type region 27 includes a second partition region 272.

[0138] When the heat exchange plate 2 is in cooling mode, the working fluid flows from the first partition 261 of the first type region 26 to the second type region 272, and / or The working medium flows from the second partition 262 of the first type area 26 to the first partition area 271.

[0139] Optionally, when the heat exchange plate 2 is in cooling mode, the working fluid branches at least twice in the process of flowing from the first partition 261 to the second partition region 272 of the first type region 26.

[0140] Optionally, the process in which the working medium flows from the first partition 261 to the second partitioned region 272 of the first type region 26 branches at least twice and converges at least once.

[0141] Optionally, when the heat exchange plate 2 is in cooling mode, the working medium flows into the second partition region 272 after being branched at least twice in the first partition 261.

[0142] Optionally, when the heat exchange plate 2 is in cooling mode, the working medium branches at least twice in the first partition 261 before flowing into the second partition region 271 and converging at least once in the second partition region 272.

[0143] Optionally, the first partition 261 of the first type area 26 includes the second sub-area 2612, the second partition 262 of the first type area 26 includes the second sub-zone 2622, and the second partition area 272 is located between the second sub-zone 2622 and the second sub-area 2612.

[0144] Optionally, the working medium flows through the second subzone 2622, the second partition region 272, the second subzone 2612, and the second partition region 272 in that order.

[0145] Optionally, the working medium flows from the second subzone 2622 into the second partition area 272.

[0146] Optionally, the working medium branches twice in the second sub-region 2612.

[0147] Optionally, the working medium converges once in the second partition region 2721.

[0148] Optionally, the first sub-region 2611 is adjacent to the second sub-zone 2622.

[0149] Optionally, after passing through the first subzone 2621, the first partition area 271, and the first subzone 2611, the working medium flows into the second subzone 2622.

[0150] Optionally, the working medium flows sequentially from the second subzone 2622 through the second partition area 272, the second subzone 2612, and the second partition area 272, and then flows out from the second partition area 272.

[0151] Optionally, the working medium flows from the second subzone 2622 into the second partition area 272 and out of the second partition area 272.

[0152] Optionally, the heat exchange plate 2 further includes a third type region. The third type region is the region where the heat exchange plate 2 is covered by the battery pack. The first type region 26 and the second type region 27 form a heat exchange region. The third type region is located within the heat exchange region.

[0153] Optionally, the flow path 21 located between the heat exchange region and the third type region may branch up to six times or converge up to six times.

[0154] Optionally, the flow path 21 located between the heat exchange region and the third type region branches in the first type region 26 and then enters the second type region 27.

[0155] Optionally, the flow path 21 located between the heat exchange region and the third type region passes through the first subzone 2621, the first partition region 271, the first subzone 2611, and the first partition region 271, and then flows out from the first subzone 2621.

[0156] Selectively, the flow path 21 located between the heat exchange region and the third type region passes through the first subzone 2621, the first partition region 271, the first subzone 2611, the second subzone 2622, the second partition region 272, the second subzone 2612, the second partition region 272, the second subzone 2622, the first subzone 2611, and the first partition region 271, and then flows out into the first subzone 2621.

[0157] Optionally, the flow path 21 located between the heat exchange region and the third type region branches in the first subzone 2621, and / or the flow path 21 located between the heat exchange region and the third type region converges in the first subzone 2621.

[0158] Optionally, the first type region 26 includes a first partition 261 and a second partition 262.

[0159] When the heat exchange plate 2 is configured to heat the battery, the working medium flows from the first partition 271 of the second type region 27 to the first partition 261 of the first type region 26, and / or The working medium flows from the first partition area 271 of the second type area 27 to the second partition 262 of the first type area 26.

[0160] When the heat exchange plate 2 is optionally configured to heat the battery, the working medium converges at least once in the process of flowing from the first partition region 271 of the second type region 27 to the second partition region 262 of the first type region 26.

[0161] Optionally, the working medium branches at least once before flowing from the first partition area 271 of the second type area 27 to the second partition 262 of the first type area 26, and converges at least once after flowing to the second partition 262.

[0162] When the heat exchange plate 2 is optionally configured to heat the battery, the working medium is branched at least once in the first partition region 271 and then flows into the second partition 262 of the type 1 region 26.

[0163] When the heat exchange plate 2 is optionally configured to heat the battery, the working medium is branched at least once, then flows into the first partition 261 of the first type region 26, and is branched at least once in the first partition 261 of the first type region 26.

[0164] Optionally, the first partition 261 of the first type region 26 includes the first sub-region 2611, the second partition 262 of the first type region 26 includes the first sub-zone 2621, and the first partition region 271 is located between the first sub-zone 2621 and the first sub-region 2611.

[0165] Optionally, the working medium experiences at least one open-loop circulation in the first subzone 2621, the first partition region 271, and the first subregion 2611.

[0166] Optionally, this open-loop circulation includes the working medium flowing from the first subzone 2621 to the first partition region 271, then to the first subzone 2611, then to the first partition region 271, then to the first subzone 2621, then to the first partition region 271, then to the first subzone 2611, then to the first partition region 271, and then to the first subzone 2621.

[0167] Optionally, this open-loop cycle process includes at least two branching and at least one convergence.

[0168] Optionally, the working medium makes its first branch in the first subzone 2621, its second branch in the first subregion 2611, returns to the first subzone 2621, and then converges once.

[0169] Optionally, the working medium flows into the flow path 21 from a position adjacent to the first subzone 2621. The working medium flows from the first subzone 2621 to the first partition region 271 and then back to the first subzone 2621. The process flowing out of the flow path 21 includes at least two branching and at least two convergences.

[0170] Optionally, the first partition 261 of the first type area 26 includes a first sub-area 2611 and a second sub-area 2612, and the second partition 262 of the first type area 26 includes a first sub-zone 2621 and a second sub-zone 2622.

[0171] The second type area 27 includes the first partitioned area 271 and the second partitioned area 272.

[0172] The second partition area 272 is located between the second subzone 2622 and the second subzone 2612, and the first partition area 271 is located between the first subzone 2611 and the first subzone 2621.

[0173] The first sub-region 2611 and the first sub-zone 2622 are adjacent to each other.

[0174] Selectively, several flow paths 21 allow the working medium to pass through the edges of the first subzone 2621, the first partition region 271, the first subzone 2611, and the second subzone 2622, first flowing into the second partition region 272, and then branching into the two subzones 2622 and the second subzone 2612.

[0175] Optionally, several other flow paths 21 allow the working medium to pass through the edges of the first subzone 2621 and the first partition region 271, first flowing into the first subzone 2611, then branching to the first partition region 271, and finally flowing into the first subzone 2621.

[0176] Optionally, the flow path 21 is branched at least twice in the second partition region 272 to the working medium.

[0177] The flow path 21 converges the working medium at least once in each of the second sub-region 2612 and the second sub-zone 2622.

[0178] Selectively, the working fluid that flows out from the second sub-region 2612 and the second sub-zone 2622 passes along the edge of the heat exchange plate 2 through the first sub-region 2611, the first partition region 271, and the first sub-zone 2621, converges, and then flows out from the heat exchange plate 2.

[0179] Optionally, the flow path 21 concentrates the working medium that has flowed into the first subzone 2621 once in the first subzone 2621, returns to the first subregion 2611, and then concentrates it once more.

[0180] Optionally, after convergence in the first sub-region 2611, the working fluid flows out from the edge of the heat exchange plate 2.

[0181] When the heat exchange plate 2 is in cooling mode, the working medium branches at least twice at the first partition 261 before flowing into the second type region 27, where it converges at least once before flowing into the second flow convergence end.

[0182] When the heat exchange plate 2 is in cooling mode, the working medium branches at least twice at the first partition 261 before flowing into the second type region 27, where it converges at least twice before flowing into the second flow convergence end.

[0183] The first flow convergence end is close to the second flow convergence end and is located on the first side of the heat exchange plate 2.

[0184] The heat exchange plate 2 includes a first heat exchange region and a second heat exchange region. The second heat exchange region is located between the first heat exchange region and the first side. The first heat exchange region includes a second type region 27 and a first type region 26 distributed on two opposing sides of the second type region 27.

[0185] The second heat exchange region includes the second type region 27 and the first type region 26, which are distributed on two opposing sides of the second type region 27.

[0186] When the heat exchange plate 2 is in cooling mode, in the second heat exchange region, the working fluid flows into another first type region 26 after branching once in one first type region 26, flows into a second type region 27 after branching once in the other first type region 26, and flows into the second flow convergence end after converging twice in the second type region 27.

[0187] When the heat exchange plate 2 is in cooling mode, in the first heat exchange region, the working fluid flows into the second type region 27 after branching once in one first type region 26, and flows into the second flow convergence end after converging twice in the second type region 27.

[0188] The working medium flows into a second type region 27 after branching twice in another first type region 26, and then flows into a second flow convergence end after converging twice in the second type region 27.

[0189] The first type regions 26, distributed on two opposing sides of the second type region 27, are the first partition 261 and the second partition 262, respectively.

[0190] When the heat exchange plate 2 is in cooling mode, in the first heat exchange region, the working medium flows into the second type region 27 after branching once at the first partition 261, and flows into the second flow convergence end after converging twice in the second type region 27.

[0191] The working medium flows into the second type region 27 after two branching events at the second partition 262, and then flows into the second flow convergence end after two convergence events in the second type region 27.

[0192] Both the first and second flow convergence ends are located in the second heat exchange region, and the number of both the first and second flow convergence ends is 2.

[0193] Embodiments of this disclosure further provide heat exchange plates in four embodiments.

[0194] According to a first aspect, referring to Figures 1 to 17, an embodiment of the present disclosure provides a heat exchange plate. The heat exchange plate is The first terminal portion 221 and the second terminal portion 222, A first flow convergence end and a second flow convergence end, wherein the first flow convergence end is connected to a first terminal 221 and the second flow convergence end is connected to a second terminal 222, A flow path 21 is configured to connect a first flow convergence end and a second flow convergence end, and the flow path extends from the first flow convergence end to the second flow convergence end after changing direction at least once.

[0195] Specifically, the heat exchange plate 2 may be provided with a flow branching component 22, and a first terminal 221 and a second terminal 222 may be positioned on the flow branching component 22 as shown in Figure 12. The first terminal 221 and the second terminal 222 may be configured to connect the heat exchange plate to an external component that provides a working fluid. For example, an external pump may be connected to the heat exchange plate through the first terminal 221 and the second terminal 222.

[0196] The first and second flow convergence ends can be used as end structures at the two ends of the flow channel 21. For example, the first and second flow convergence ends can be used as end structures configured to close the two ends of the flow channel 21, or to connect them to the first and second terminals 221 and 222 respectively by screws. The flow channel 21 in the heat exchange plate extends from the first flow convergence end to the second flow convergence end after changing direction at least once in order to improve the distribution density of the flow channel 21 in the heat exchange plate. For example, to ensure the distribution density of the flow channel 21 in the heat exchange plate, the flow channel 21 is distributed in a zigzag or snake shape in the heat exchange plate, thereby improving the heat exchange effect of the heat exchange plate.

[0197] Referencing Figure 17, optionally, the reversal point 211 is formed at the reversal position of the flow path 21. The reversal point includes a first-type reversal point 2111. The flow path direction at one end of the first-type reversal point 2111 forms a reversal angle with the flow path direction at the other end of the first-type reversal point 2111. In addition, the number of flow paths at one end of the first-type reversal point 2111 is greater than the number of flow paths at the other end of the first-type reversal point 2111.

[0198] Specifically, the structure of the first type direction change point 2111 can be shown in Figure 7. In order to achieve flexible direction changes of the flow channels 21 and to ensure the distribution density of the flow channels 21 in the heat exchange plate, the flow channels 21 can bend by a certain direction change angle when passing through the first type direction change point 2111, for example, by 90° or 180°. The first type direction change point 2111 can also adjust the number of flow channels while functioning to bend. For example, in order to improve the distribution flexibility of the flow channels 21 in the heat exchange plate when the flow channels 21 pass through the first type direction change point 2111, the flow channels can form a flow channel structure in which one flow channel is branched into two, one flow channel is branched into three, or one flow channel is branched into more than that.

[0199] Optionally, the number of channels at one end of the first type direction change point 2111 is twice the number of channels at the other end of the first type direction change point 2111. That is, the channels 21 can branch or converge as they pass through the first type direction change point 2111. By adjusting the number of channels and the flow rate of a single channel, temperature uniformity of the heat exchange plate during heat exchange can be ensured.

[0200] Optionally, referring to Figure 17, the reversal point 211 includes a second type reversal point 2112. The flow direction at one end of the second type reversal point 2112 forms a reversal angle with the flow direction at the other end of the second type reversal point 2112. To achieve flexible reversal of the flow path 21 and ensure the distribution density of the flow path 21 in the heat exchange plate, the flow path 21 can bend by a certain reversal angle when passing through the second type reversal point 2112, for example, by 90° or 180°.

[0201] Referencing optionally Figures 2 and 17, the first type of direction change point 2111 is located around the heat exchange plate, and the second type of direction change point 2112 is located in the middle of the heat exchange plate. Since both the first type of direction change point 2111 and the second type of direction change point 2112 have direction change functions, the flow path 21 can change direction while bending both around and in the middle of the heat exchange plate. Furthermore, the number of flow paths at one end of the first type of direction change point 2111 is greater than the number of flow paths at the other end of the first type of direction change point 2111, thereby ensuring smooth flow of the flow path 21 in the middle of the heat exchange plate after the flow path 21 has branched and converged around the heat exchange plate.

[0202] Referencing optionally Figures 12 and 7, the first terminal 221, the second terminal 222, the first flow convergence end, and the second flow convergence end are all located on the first side of the heat exchange plate. For example, the heat exchange plate may be a rectangular plate, and the first side may be the left side of the heat exchange plate in Figure 3. In the flow path 21, in order to improve the heat exchange efficiency of the working fluid in the flow path 21 in the heat exchange plate, coolants such as R123a and R32 and working fluids such as CO2 and water can enter the flow path 21 from the left side of the heat exchange plate, flow around the heat exchange plate, perform heat exchange, and then exit the flow path 21 from the left side of the heat exchange plate.

[0203] Referencing optionally Figures 12, 7, and 17, the first flow convergence end is connected to two second-type reversal points 2112, and the second flow convergence end is connected to two first-type reversal points 2111. Specifically, when the heat exchange plate performs cooling, the first flow convergence end may be the inlet of the working fluid in the flow path 21, and the second flow convergence end may be the outlet of the working fluid in the flow path 21. When the working fluid passes through the first flow convergence end and flows into the flow path 21, it may be preliminarily reversed. When the working fluid passes through the second flow convergence end and flows out of the flow path 21, it can converge while reversing direction. That is, the working fluid can flow out of the flow path 21 from the flow convergence end after convergence, which simplifies the connection between the flow path 21 and the external components.

[0204] When the heat exchange plate performs heating, the second flow convergence end may be the inlet of the working medium in the flow path 21, and the first flow convergence end may be the outlet of the working medium in the flow path 21.

[0205] Referencing Figures 1 and 2, the heat exchange plate is rectangular, with first-type direction change points 2111 and second-type direction change points 2112 located at three corners of the heat exchange plate, and one corner of the heat exchange plate is provided with the first-type direction change point 2111.

[0206] Specifically, the heat exchange plate may be a rectangular heat exchange plate, as shown in Figure 2. In Figure 2, one or more first type direction changing points 2111 can be provided at the upper left corner of the heat exchange plate, i.e., the corner of the heat exchange plate close to the first flow convergence end, thereby allowing the working medium flowing from the first flow convergence end or flowing out of the flow path 21 from the first flow convergence end to branch or converge at high speed.

[0207] In Figure 2, in order to ensure that the working fluid in the flow path 21 flexibly branches and converges while changing direction at the heat exchange plate, one or more first type direction changing points 2111 and one or more second type direction changing points 2112 can be provided on the lower left corner and two right corners of the heat exchange plate.

[0208] Referencing Figure 2, optionally, multiple second-type direction change points 2112 extend in a rectangular shape.

[0209] Specifically, the second type turning point 2112 can bend by 90° or 180° during the turning process. For example, when the second type turning point 2112 bends by 90°, multiple consecutive second type turning points 2112 can form a combination of rectangular second type turning points 2112, that is, a zigzag structure in which multiple second type turning points 2112 extend in a rectangular shape. Multiple second type turning points 2112 having a zigzag structure can improve the heat exchange efficiency of the heat exchange plate.

[0210] Optionally, referring to Figure 2, multiple Type 1 direction change points 2111 are arranged side by side. Specifically, when a horizontal flow path is changed to a vertical flow path, the flow paths can simultaneously branch or converge, thereby allowing the Type 1 direction change point 2111 to be formed between the horizontal and vertical flow paths. When multiple rows of horizontal flow paths are changed to multiple rows of vertical flow paths, the multiple Type 1 direction change points 2111 arranged side by side can be formed to increase the flow path density of the horizontal and vertical flow paths after the direction change.

[0211] Optionally, the heat exchange plate further includes a heat exchange plate 2.

[0212] According to a second aspect, referring to Figures 2 to 17, an embodiment of the present disclosure provides a heat exchange plate. The heat exchange plate is A first flow convergence end and a second flow convergence end, A flow path 21 is configured to connect a first flow convergence end and a second flow convergence end, A flow branching / converging point 212, wherein the flow branching / converging point 212 is distributed on the flow channel 21, and the number of flow channels 21 at the two ends of the flow branching / converging point 212 is different.

[0213] Specifically, the first and second flow convergence ends can be used as end structures at the two ends of the flow path 21. For example, the first and second flow convergence ends can be used as end structures configured to close the two ends of the flow path 21, or to connect them to the first and second end portions 221 and 222, respectively, by screws. The distribution of the flow path 21 in the heat exchange plate branches at least once, converges at least once, and then extends from the first flow convergence end to the second flow convergence end. To improve the distribution density of the flow channels 21 in the heat exchange plate and improve the heat exchange effect of the heat exchange plate, one or more flow branching / converging points 212 are formed on the flow channels 21. The flow branching may be by branching one flow channel into two, one flow channel into three, or one flow channel into more than that, and the flow convergence may be by converging two flow channels into one, three flow channels into one, or more flow channels into one.

[0214] Referencing Figure 2, optionally, the flow path 21 includes a main section and branches. The main section is connected to a first flow convergence end and a second flow convergence end. The branches are connected to the ends of the main section that are away from the first and second flow convergence ends.

[0215] Specifically, the main body of the flow path 21 can be a part of a flow path that is directly connected to the first and second flow convergence ends and is not branched or converged, while the branches can be a part of a flow path that branches off from the main body or converges to the main body and is connected to the main body, thereby ensuring that the number of branches is greater than the number of main bodies in order to ensure the distribution density of the flow path 21 on the heat exchange plate.

[0216] Referencing Figure 8, optionally, the flow divergence / convergence point 212 includes the first-stage flow divergence / convergence point 2121, and the branch includes the first-stage branch. The first-stage flow divergence / convergence point 2121 is connected between the main body and the first-stage branch.

[0217] Specifically, the first-stage flow branching / converging point 2121 functions as a branching or convergence structure between the main body and the first-stage branches, allowing the working fluid in the main body to be evenly distributed to two or more first-stage branches, thereby ensuring that the working fluid is dispersed as early as possible in the heat exchange plate to guarantee the distribution density of the flow channels 21 in the heat exchange plate and the flexibility of heat exchange control.

[0218] At least two first-stage branches are optionally arranged, that is, the first-stage flow branching / converging point 2121 can evenly distribute the working medium in the main body to two, three, or more first-stage branches in order to ensure the distribution density of the flow path 21 in the heat exchange plate.

[0219] In a particular embodiment, referring to Figure 8, one end of the first-stage flow branch / convergence point 2121 is connected to one of the main body, and the other end of the first-stage flow branch / convergence point 2121 is connected to two of the first-stage branches, that is, the first-stage flow branch / convergence point 2121 can evenly distribute the working medium in the main body to the two first-stage branches, thereby facilitating the control of the balance of the working medium flow in the two first-stage branches and ensuring an even flow of the working medium in the two first-stage branches.

[0220] Referencing optionally Figures 2 and 8, the flow divergence / convergence point 212 further includes a second-stage flow divergence / convergence point 2122, and the branch includes a second-stage branch. The second-stage flow divergence / convergence point 2122 is connected between the first-stage branch and the second-stage branch.

[0221] Specifically, the second-stage flow branching / converging point 2122 functions as a branching or convergence structure between the first-stage branch and the second-stage branch, allowing the working medium in the first-stage branch to be evenly distributed to two or more second-stage branches, thereby distributing the working medium across the heat exchange plate to ensure the distribution density of the flow channels 21 in the heat exchange plate and the flexibility of heat exchange control.

[0222] At least two second-stage branches are optionally provided. That is, in order to ensure the distribution density of the flow path 21 in the heat exchange plate, the second-stage flow branching / converging point 2122 can evenly distribute the working medium in the first-stage branch to two, three, or more second-stage branches.

[0223] In a particular embodiment, referring to Figure 8, one end of the second-stage flow branch / convergence point 2122 is connected to one of the first-stage branches, and the other end of the second-stage flow branch / convergence point 2122 is connected to two of the second-stage branches. That is, to facilitate the control of balancing the flow of the working fluid in the two second-stage branches, the second-stage flow branch / convergence point 2122 can equally branch the working fluid in the first-stage branch to the two second-stage branches.

[0224] Optionally, referring to Figure 2, the flow branching / converging point 212 is located on the periphery of the heat exchange plate.

[0225] Specifically, when the flow branching / converging point 212 is located around the heat exchange plate, the continuous flow path 21 can be formed in the middle of the heat exchange plate to improve the smooth flow of the working medium in the flow path 21 in the heat exchange plate.

[0226] Optionally, the first stage branch includes an annular branch. The annular branch may be the first type flow path 25 in Figures 1 and 3. The two ends of the annular branch are directly connected to the main body. The main body of the flow path 21 is part of the flow path that is directly connected to the first and second flow convergence ends and is not branched or converged. Therefore, to ensure temperature balance of the flow path 21 during heat exchange, the arrangement of the annular branch simplifies the flow of the working medium in the annular branch and avoids excessive heating and cooling of the first and second flow convergence ends.

[0227] Optionally, referring to Figure 2, the flow divergence / divergence point 212 further includes a third-stage flow divergence, the branch includes a third-stage branch, and the main branch is connected to the first-stage branch, the second-stage branch, and the third-stage branch in that order.

[0228] The first-stage flow divergence / convergence point 2121 is connected between the main body and the first-stage branches, the second-stage flow divergence / convergence point 2122 is connected between the first-stage branches and the second-stage branches, and the third-stage flow divergence / convergence point is connected between the second-stage branches and the third-stage branches. As a result, the number of first-stage branches is twice the number of main bodies, the number of second-stage branches is twice the number of first-stage branches, and the number of third-stage branches is twice the number of second-stage branches.

[0229] In addition, the flow branching / converging point 212 may further include a fourth-stage flow branching point, a fifth-stage flow branching point, a sixth-stage flow branching point, or more flow branching points. The branch section includes a fourth-stage branch section, a fifth-stage branch section, a sixth-stage branch section, or more branching points. The fourth-stage flow branching point is connected between the third-stage branch section and the fourth-stage branching point, the fifth-stage flow branching point is connected between the fourth-stage branching point and the fifth-stage branching point, and the sixth-stage flow branching point is connected between the fifth-stage branching point and the sixth-stage branching point, thereby forming a multi-stage branching and convergence of the flow path 21.

[0230] Optionally, the heat exchange plate further includes a heat exchange plate 2.

[0231] According to a third aspect, referring to Figures 1 to 17, an embodiment of the present disclosure provides a heat exchange plate. Referring to Figure 13, the heat exchange plate is, The first region 28 and the second region 29, The system includes a channel 21, wherein the channel is distributed within a first region 28 and a second region 29, and the average distribution density of the channel 21 within the first region 28 is greater than the average distribution density of the channel 21 within the second region 29.

[0232] Specifically, the heat exchange plate can be configured to cool or heat the battery. For example, when the heat exchange plate cools the battery, a large amount of heat is generated at the positive and negative electrode positions during the battery's operation. That is, the heat exchange plate needs to provide a better cooling effect to the positive and negative electrode positions of the battery. When the average distribution density of the flow channels 21 in the first region 28 is greater than the average distribution density of the flow channels 21 in the second region 29, the first region 28 can face the positive and negative electrode positions of the battery, and the second region 29 can face the middle part of the battery to improve the heat exchange effect of the heat exchange plate for the battery.

[0233] Optionally, the width of the flow path 21 is less than 15 mm.

[0234] In particular, when the heat exchange plate provided by the embodiments of this disclosure faces different heat exchange requirements at different locations, the heat exchange efficiency of the heat exchange plate can be improved through different distribution densities of the flow channels 21, i.e., flow channels 21 having a narrower width can be used for heat exchange. The width of the flow channels 21 may be 3 mm to 12 mm. The width of the flow channels 21 is also the radial size of the flow channels 21. Optionally, to increase the distribution density of the flow channels 21, the width of the flow channels 21 can be set to 5 mm to 10 mm.

[0235] Optionally, the heat exchange plate further includes a heat exchange plate 2.

[0236] According to a fourth aspect, referring to Figures 1 to 17, an embodiment of the present disclosure provides a heat exchange plate. The heat exchange plate is Flow channel plate 24 and A flow path 21 is provided, the flow path 21 is located on a flow path plate 24, and the area for arranging the flow path 21 in the plane where the heat exchange plate is located is greater than 70% of the area of ​​the flow path plate 24.

[0237] In particular, the ratio of the area of ​​the flow channels 21 in the flow channel plate 24 can be flexibly set according to the heat exchange object of the heat exchange plate. For example, when exchanging heat for heat exchange objects such as batteries that have high heat exchange requirements, the area for arranging the flow channels 21 can be set to 75%, 80%, 85%, 90%, or 95% of the area of ​​the flow channel plate 24 in order to improve the flexibility of heat exchange of the heat exchange plate for batteries with different power and voltages.

[0238] Optionally, the width of the channel is less than 15 mm.

[0239] Specifically, when the heat exchange plate provided by the embodiments of this disclosure faces different heat exchange requirements at different locations, the heat exchange efficiency of the heat exchange plate can be improved through different distribution densities of the flow channels, i.e., flow channels 21 having a narrower width can be used for heat exchange. The width of the flow channels 21 may be 3 mm to 12 mm. The width of the flow channels 21 is also the radial size of the flow channels 21. Optionally, to increase the distribution density of the flow channels 21, the width of the flow channels 21 can be set to 5 mm to 10 mm.

[0240] Optionally, the heat exchange plate further includes a heat exchange plate 2.

[0241] One embodiment of the present disclosure is a battery tray, wherein the battery tray is Heat exchange plate, or A battery tray, including a heat exchange plate, is further provided.

[0242] One embodiment of the present disclosure further provides a battery structure, the battery structure including the battery tray.

[0243] In particular, the battery structure is A battery module 1, wherein the battery module 1 has electrode positions and non-electrode positions, A heat exchange plate 2 is provided, wherein the heat exchange plate 2 is located at the bottom of the battery module 1, a flow path 21 for circulating a working medium is located within the heat exchange plate 2, and the heat exchange plate 2 includes a first type region 26 facing an electrode position and a second type region 27 facing a non-electrode position.

[0244] When the heat exchange plate 2 is configured to cool the battery module 1 through a working fluid, the working fluid flows from the flow path 21 of the first type region 26 to the flow path 21 of the second type region 27.

[0245] When the heat exchange plate 2 is configured to heat the battery module 1 through a working medium, the working medium flows from the flow path 21 of the second type region 27 to the flow path 21 of the first type region 26.

[0246] Specifically, the working fluid in the flow path 21 may be a coolant such as R123a and R32, CO2, or water. For example, when the working fluid is a coolant, the working fluid can flow from the flow path 21 in the first type region 26 to the flow path 21 in the second type region 27 when the heat exchange plate 2 can be configured to cool the battery module 1 through a low-temperature, low-pressure cooling working fluid. When the heat exchange plate 2 is configured to heat the battery module 1 through a high-temperature, high-pressure working fluid to ensure that the cooling working fluid is in a balanced state of gas and liquid phases, thereby improving the heat exchange effect of the heat exchange plate 2 for the battery module 1 and ensuring long-term stable operation of the battery structure, the working fluid flows from the flow path 21 in the second type region 27 to the flow path 21 in the first type region 26.

[0247] In addition, the flow path 21 may be engraved in the heat exchange plate 2, and the battery module 1 may contain multiple cells. The heat exchange plate 2 cools the battery module 1 in the forward direction (direction of the working medium flow in the flow path 21) and heats the battery module in the reverse direction (direction of the working medium flow in the flow path 21), which can improve the cooling and heating operations of the battery module 1, ensure temperature uniformity of the battery module 1, and improve the heat exchange capacity of the heat exchange plate 2 for the battery module 1.

[0248] Optionally, the electrode positions include a positive electrode position and a negative electrode position, which are located far apart from each other on two opposing sides of the battery module 1.

[0249] Specifically, during the operation of the battery module 1, a large amount of heat is generated at the positive and negative electrode positions. That is, the heat exchange plate needs to provide a better cooling effect to the positive and negative electrode positions of the battery module. When the positive and negative electrode positions are located far apart from each other on two opposing sides of the battery module 1, in order to improve the heat exchange effect of the heat exchange plate 2 for the battery module 1, the heat exchange plate 2 can perform heating and heat exchange for the electrodes on the two opposing sides of the battery module 1 that are far apart from each other.

[0250] Referencing optionally to Figures 1 and 2, the first type region 26 includes a first partition 261 and a second partition 262. The first partition 261 faces the positive electrode position, and the second partition 262 faces the negative electrode position.

[0251] When the heat exchange plate 2 cools the battery module 1 through the working medium, the working medium flows from the flow paths 21 of the first and second partitions, which are far apart from each other, to the flow path 21 of the second type region 27. In this case, the working medium may be a low-temperature and low-pressure working medium. The low-temperature and low-pressure working medium first cools the positive and negative electrode locations of the battery module 1, which generate more heat, and then cools other areas of the battery module 1 to ensure temperature uniformity of the battery module 1.

[0252] When the heat exchange plate 2 is configured to heat the battery module 1 through a working medium, the working medium flows from the flow path 21 of the second type region 27 to the flow paths 21 of the first and second partitions. In this case, the working medium may be a high-temperature and high-pressure working medium, which first heats the regions of the battery module 1 that do not generate much heat except at the positive and negative electrode positions, and then heats the positive and negative electrode positions of the battery module 1 to ensure temperature uniformity of the battery module 1.

[0253] When the heat exchange plate 2 optionally cools the battery module 1 through the working medium, the working medium flows from the flow path 21 of the first partition 261 to the flow path 21 of the second partition, and from the flow path 21 of the second partition 262 to the flow path 21 of the second type region 27.

[0254] Specifically, all working fluid flowing through the first partition 261 and the second partition 262 converges into the flow path 21 of the second type region 27. When the heat exchange requirement of the first partition 261 is higher than that of the second partition 262, in order to improve the heat exchange flexibility of the heat exchange plate 2 in the battery structure, the working fluid in the first partition 261 first flows through the second partition 262 and then returns to the second partition 262, and the working fluid in the second partition 262 can flow directly into the flow path 21 of the second type region 27.

[0255] The number of flow channels 21 gradually increases in the direction of flow from the first type region 26 to the second type region 27, as is optional.

[0256] Specifically, in the direction of flow from the first type region 26 to the second type region 27, the number of channels 21 may gradually increase, for example, by increasing the number of channels 21 through branching, thereby increasing the distribution density of channels 21. After the channels 21 branch, the channels can also converge to facilitate the recovery of the working medium at the inlet and outlet of the channels 21.

[0257] Optionally, in the direction of flow from the first type region 26 to the second type region 27, the flow path 21 includes a first flow path section and a second flow path section connected to each other. The number of flow paths in the second flow path section is twice the number of flow paths in the first flow path section.

[0258] Specifically, the first and second flow channels can be connected through a flow branching point. To facilitate the control of the balance of the flow rates of the working fluid in the two second flow channels, the flow branching point can evenly divide the working fluid in the first flow channel into the two second flow channels.

[0259] Optionally, in the direction of flow from the first type region 26 to the second type region 27, the flow path 21 further includes a third flow path section, the third flow path section is connected to the second flow path section, and the number of flows in the third flow path section is twice the number of flows in the second flow path section.

[0260] Specifically, the second and third flow channels can be connected through a flow branching point. To facilitate the control of the balance of the flow rates of the working fluid in the two third flow channels, the flow branching point can evenly divide the working fluid in the second flow channel into the two third flow channels.

[0261] Optionally, the radial size of the cross-section of the channel 21 is in the range of 6 mm to 9 mm.

[0262] Specifically, the radial size of the channel 21 in the first type region 26 is smaller than the radial size of the channel 21 in the second type region 27.

[0263] Specifically, the flow channels 21 in the first type region 26 may be close to the inlet and outlet of the flow channels 21, that is, the flow channels 21 in the first type region 26 are located at the near end of the flow channels. The flow channels 21 in the second type region 27 may be far from the inlet and outlet of the flow channels 21, that is, the flow channels 21 in the second type region 27 are located at the far end of the flow channels 21. To ensure a balance of heat exchange effects between the near and far ends of the flow channels 21, the radial size of the flow channels 21 at the far end can be gradually increased. For example, the radial size of the flow channels 21 in the first type region 26 is set to be smaller than the radial size of the flow channels 21 in the second type region 27.

[0264] Specifically, the radial size of the channel 21 in the first type region 26 is in the range of 6 mm to 7.5 mm, and the radial size of the channel 21 in the second type region 27 is in the range of 7.5 mm to 9 mm.

[0265] Optionally, the electrode positions include positive and negative electrode positions, and the positive and negative electrode positions are located on the same side of the battery module 1. That is, the first partition 261 and the second partition 262 of the first type region 26 are in close proximity to each other and jointly perform heat exchange for the positive and negative electrode positions of the battery module.

[0266] Optionally, the heat exchange plate 2 is provided with a flow branching component 22. The flow branching component 22 has a first terminal portion 221 and a second terminal portion 222. The first terminal portion 221 and the second terminal portion 222 are connected to the two ends of the flow path 21, respectively.

[0267] Specifically, the first terminal 221 and the second terminal 222 can be configured to connect the heat exchange plate 2 to an external component that provides a working fluid. For example, to ensure stable flow of the working fluid within the heat exchange plate 2, an external pump can be connected to the heat exchange plate 2 through the first terminal 221 and the second terminal 222.

[0268] Optionally, the first termination 221 is connected to the flow path 21 of the first type region 26, and the second termination 222 is connected to the flow path 21 of the second type region 27.

[0269] Specifically, the two ends of the flow path 21 may be the first flow convergence end and the second flow convergence end. For example, the first flow convergence end and the second flow convergence end can be used as end structures configured to block the two ends of the flow path 21 or connect them to the first terminal end 221 and the second terminal end 222 respectively by screws. The flow path 21 in the heat exchange plate extends from the first flow convergence end to the second flow convergence end through the flow paths 21 in the first type region 26 and the second type region 27 after at least one direction change in order to improve the distribution density of the flow paths 21 in the heat exchange plate. For example, in order to ensure the distribution density of the flow paths 21 in the heat exchange plate, the flow paths 21 are distributed in a zigzag or snake shape in the heat exchange plate, thereby improving the heat exchange effect of the heat exchange plate.

[0270] Optionally, referring to FIGS. 6 and 12, the battery module 1 includes a first battery module 11 and a second battery module 12. The second battery module 12 is located on the side of the first battery module 11 away from the flow branching component 22.

[0271] The flow rate of the flow path of the flow path 21 facing the first battery module 11 is the first flow rate, and the flow rate of the flow path of the flow path 21 facing the second battery module 12 is the second flow rate. The first flow rate is less than the second flow rate.

[0272] Specifically, when the second battery module 12 is located on the side of the first battery module 11 away from the flow branching component 22, specifically, the flow path 21 of the first type region 26 may face the first battery module 11 and may be close to the flow branching component 22, that is, the flow path 21 of the first type region 26 is located at the proximal end of the heat exchange plate 2. The flow path 21 of the second type region 27 may be far away from the flow branching component 22, that is, the flow path 21 of the second type region 27 is located at the distal end of the heat exchange plate 2. To ensure a balanced heat exchange effect at the proximal end and the distal end of the heat exchange plate 2, the flow rate of the flow path 21 at the distal end can be increased. For example, the flow rate of the flow path in the opposite flow path 21 of the second battery module 12 is set to the second flow rate, and the first flow rate is smaller than the second flow rate.

[0273] In addition, two sets of batteries formed by the first battery module 11 and the second battery module 12 can be charged and discharged with each other after being connected through the motor coil, that is, the temperature of the battery is raised by self-heating, whereby the battery can perform better charging and discharging.

[0274] In a specific embodiment, the average radial size of the flow path of the flow path 21 facing the first battery module 11 is smaller than the average radial size of the flow path of the flow path 21 facing the second battery module 12.

[0275] In addition, the number of flow paths in the flow path 21 facing the first battery module 11 can also be set to be less than the number of flow paths in the flow path 21 facing the second battery module 12.

[0276] Optionally, the flow path 21 includes a first type flow path 25 located on the outer periphery of the flow path 21, and the first type flow path 25 is located outside the protrusion of the battery module 1 on the heat exchange plate 2.

[0277] The flow rate of the first type flow path 25 is 20% to 25% of the total flow rate of flow path 21, the first flow rate is 30% to 40% of the total flow rate of flow path 21, and the second flow rate is 40% to 50% of the total flow rate of flow path 21.

[0278] Specifically, the two ends of the first type flow path 25 are directly connected to the main body of the flow path. The main body of flow path 21 is part of the flow path that is directly connected to the first and second flow convergence ends and is not branched or converged. Therefore, in order to ensure temperature balance in flow path 21 during heat exchange, the arrangement of the first type flow path 25 simplifies the flow of the working medium in the first type flow path 25 and avoids excessive heating and cooling of the first and second flow convergence ends.

[0279] Optionally, the heat exchange plate 2 includes a third region located between the first type region 26 and the second type region 27.

[0280] Specifically, when the heat exchange plate 2 performs heat exchange for the battery module 1, the first type region 26 and the second type region 27 may correspond to the positive and negative electrode positions of the battery module 1, and the third region may correspond to the non-electrode positions in the middle of the battery module or the gap positions between cells within the battery module. Two embodiments may be implemented to increase the heat exchange efficiency of the heat exchange plate 2 for the positive and negative electrode positions of the battery module 1 and to decrease the heat exchange efficiency for the positions of the battery module 1 corresponding to the third region.

[0281] In one embodiment, the density of the flow channels 21 in the first type region 26 is higher than the density of the flow channels 21 in the third region.

[0282] In another embodiment, the density of the flow channels 21 in the second type region 27 is higher than the density of the flow channels 21 in the third region.

[0283] Optionally, the heat exchange plate 2 includes a base plate 23 and a flow path plate 24. The base plate 23 is sandwiched between the flow path plate 24 and the battery module 1. The flow path 21 is located on the flow path plate 24.

[0284] One embodiment of the present disclosure further provides a vehicle including the above-described battery structure.

[0285] While several specific embodiments of this disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this disclosure. Those skilled in the art will understand that the above embodiments can be modified without departing from the scope and spirit of this disclosure. The scope of this disclosure is limited to the appended claims.

Claims

1. A heat exchange plate applied to a battery, A heat exchange region (203) and a battery region (204), wherein the heat exchange region is arranged around the battery region, and the battery region is the battery protruding region of the battery on the heat exchange plate, A flow path (21) is provided, wherein the flow path (21) is located within the heat exchange plate, the flow path is configured to allow a heat exchange working medium to flow through the flow path, and the flow path comprises a first type flow path (100) and a second type flow path, The first type of flow path (100) is located in the heat exchange region (203), and the second type of flow path is distributed in the battery region (204). The heat exchange plate further comprises a first end portion (221) and a second end portion (222), One end of the first type flow path is connected to the first terminal (221), and the other end of the first type flow path is connected to the second terminal. A heat exchange plate in which one end of the second type flow path is connected to the first terminal (221), and the other end of the second type flow path is connected to the second terminal (222).

2. The heat exchange plate according to claim 1, wherein the length of the first type flow path is shorter than the length of the second type flow path, and / or the number of branches of the first type flow path is less than the number of branches of the second type flow path.

3. The heat exchange plate according to claim 1, wherein the first type flow path (100) extends from the first terminal portion (221) to the second terminal portion (222), and branches at least once and up to four times.

4. The heat exchange plate according to claim 1, wherein the second type of flow path extends from the first terminal portion (221) to the second terminal portion (222), and branches at least twice and up to six times.

5. The flow path comprises multiple main sections, multiple branch sections, and multiple flow branching / converging points, and the flow branching / converging points branch or converge the flow path according to the flow direction of the working medium. The aforementioned stem comprises a plurality of first stems (31) and second stems (41), wherein the first stems (31) are connected to the first terminal (221), and the second stems (41) are connected to the second terminal (222), One of the first main body (31) passes through a first-stage flow branching / converging point (2121) to form two first-stage branches (101), one of the first-stage branches (101) passes through a second-stage flow branching / converging point (2122) to form two second-stage branches (102), extending into the heat exchange region (203), the two second-stage branches (102) serving as the first type flow path (100), The heat exchange plate according to claim 1, wherein one end of the two second-stage branch portions (102) separated from the first main body (31) is connected to one of the second main bodies (41) through a flow branch.

6. The heat exchange plate according to claim 5, wherein another first-stage branch (101) formed after one of the first main sections (31) has passed the first-stage flow branching / converging point (2121) extends into the battery region (204), and the first-stage branch (101) and the branch formed after the first-stage branch has passed the flow branching / converging point constitute the second type flow path.

7. A heat exchange plate according to claim 5, wherein the second stage branch (102), which serves as the first type flow path, passes the second stage flow branch / convergence point (2122) at a position close to the second main body (41) to form the first stage branch (101), the first stage branch (101) and another first stage branch (101), which serve as the second type flow path, are connected to one of the second main bodies (41) through the first stage flow branch / convergence point (2121), and the first stage flow branch / convergence point (2121) and the second stage flow branch / convergence point (2122) are located adjacent to each other.

8. The heat exchange plate according to claim 7, wherein, in proximity to the second main body (41), the second stage flow branch / convergence point (2122) connected to the second stage branch (102) which plays the role of the first type flow path, and the second stage flow branch / convergence point (2122) connected to the second stage branch (102) which plays the role of the second type flow path, are arranged adjacent to each other.

9. It comprises a first type region (26) and a second type region (27), and the flow path (21) is distributed in the first type region (26) and the second type region (27). The heat exchange plate (2) is configured to cool the battery, and the working medium flows from the flow path (21) of the first type region (26) to the flow path (21) of the second type region (27), or The heat exchange plate (2) is configured to heat the battery, and the working medium flows from the flow path (21) of the second type region (27) to the flow path (21) of the first type region (26), as described in claim 1.

10. The first type region (26) comprises a first partition (261) and a second partition (262), The heat exchange plate (2) according to claim 9, wherein, when the heat exchange plate (2) is configured to cool the battery, the working medium branches at least twice in the process of flowing from the first partition (261) to the second type region (27).

11. The first partition (261) of the first type region (26) comprises a second sub-region (2612), and the second partition (262) of the first type region (26) comprises a second sub-zone (2622), The heat exchange plate according to claim 10, wherein the second type region comprises a second partition region (272), the second partition region (272) being located between the second subzone (2622) and the second subregion (2612).

12. The heat exchange plate according to claim 1, wherein the heat exchange plate has a first region and a second region, the flow channels are distributed within the first region (28) and the second region (29), and the average distribution density of the flow channels (21) within the first region (28) is greater than the average distribution density of the flow channels (21) within the second region (29).

13. The heat exchange plate according to claim 1, wherein the heat exchange plate comprises a flow path plate and a base plate, the flow path is arranged on the flow path plate, and the area for arranging the flow path in the plane on which the heat exchange plate is located is greater than 70% of the area of ​​the flow path plate (24).

14. The heat exchange plate according to claim 1, wherein the width of the flow path (21) is less than 15 mm.

15. It is a battery pack, A heat exchange plate according to claim 1, A battery pack comprising: a battery module, wherein the heat exchange plate covers the battery module, and the battery module is positioned in a location corresponding to the battery area.

16. The battery pack according to claim 15, wherein the battery module comprises a first module and a second module, the first module and the second module are arranged side by side, and the heat exchange region of the heat exchange plate surrounds the entire outer periphery of the first module and the second module.

17. The heat exchange plate according to any one of claims 1 to 14, or A vehicle comprising the battery pack according to claim 15 or 16.

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