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 priority and the benefits thereof for these Chinese patent applications. 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 heat - exchange plates, 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 indispensable 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, since the area for arranging heat - exchange components such as harmonica tubes is small, the heat - exchange components can only exchange heat for the middle part of the battery. As a result, the temperature of the edge 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 the embodiments of this disclosure is to provide novel technical solutions for heat - exchange plates, battery packs, and vehicles.

Means for Solving the Problems

[0006] According to a first aspect of the present disclosure, there is provided a heat exchange plate applied to a battery, the heat exchange plate comprising: a heat exchange region and a battery region, wherein the heat exchange region is disposed around the battery region, and the battery region is a battery protruding region of the battery on the heat exchange plate; and a flow path disposed within the heat exchange plate, the flow path being configured to allow a heat exchange working medium to flow therethrough, the flow path including a first type flow path and a second type flow path. The first type flow path is located in the heat exchange region, and the second type flow path is distributed in the battery region.

[0007] Optionally, 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.

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

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

[0010] Optionally, when the second type flow path extends from the first terminal end to the second terminal end, it branches at least twice and branches at most six times.

[0011] Optionally, the flow path includes a plurality of main stems, a plurality of stages of branch parts, and a plurality of stages of flow branch / convergence points, and the flow branch / convergence points branch or converge the flow path according to the flow direction of the working medium. The pipe includes a plurality of first pipes and second pipes. The first pipe is connected to the first end portion, and the second pipe is connected to the second end portion. One of the first pipes passes through the first-stage flow branching / converging point to form two first-stage branch pipes. One of the first-stage branch pipes passes through the second-stage flow branching / converging point to form two second-stage branch pipes and extends into the heat exchange region. The two second-stage branch pipes serve as the first-type flow paths. One end of one of the two second-stage branch pipes away from the first pipe is connected to one of the second pipes through a flow branch.

[0012] Optionally, another first-stage branch pipe formed after one of the first pipes passes through the first-stage flow branching / converging point extends into the battery region. The first-stage branch pipe and the branch pipe formed after the first-stage branch pipe passes through the flow branching / converging point are the second-type flow paths.

[0013] Optionally, the second-stage branch pipe serving as the first-type flow path passes through the second-stage flow branching / converging point at a position close to the second pipe to form the first-stage branch pipe. The first-stage branch pipe and another first-stage branch pipe serving as the second-type flow paths are connected to one of the second pipes through the first-stage flow branching / converging point, and the first-stage flow branching / converging point and the second-stage flow branching / converging point are arranged adjacent to each other.

[0014] Optionally, at a position close to the second pipe, the second-stage flow branching / converging point connected to the second-stage branch pipe serving as the first-type flow path and the second-stage flow branching / converging point connected to the second-stage branch pipe serving as the second-type flow path are arranged adjacent to each other.

[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, the working medium flows from the flow paths in the first type region to the flow paths in the second type region (27), or the heat exchange plate is configured to heat the battery, and the working medium flows from the flow paths in the second type region to the flow paths in the first type region.

[0016] Optionally, the first type region includes a first partition and a second partition. When the heat exchange plate is configured to cool the battery, the working medium 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 region includes a second sub-region, the second partition of the first type region includes a second sub-zone, the second type region includes a second partition region, and the second partition region is located between the second sub-zone and the second sub-region.

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

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

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

[0021] According to a second aspect of the present disclosure, there is provided a battery pack, wherein the battery pack a heat exchange plate according to the first aspect, and 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 a 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 the embodiments of the present disclosure, a vehicle including the heat exchange plate according to the first aspect or

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

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

[0026] The 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, the flow path is arranged in the heat exchange plate, the flow path is configured to enable a heat exchange working medium to flow in the flow path, a first type of flow path is located in the heat exchange area, and a second type of flow path is located in the battery area. When the first type of flow path surrounds the battery area and is located on the outer periphery of the battery protruding area, the first type of 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 the exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0028] The accompanying drawings are incorporated herein and form a part hereof, showing embodiments consistent with the present disclosure and used together with this specification to explain the principles of the present disclosure.

Brief Description of the Drawings

[0029]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

[0030] Various exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the opposite arrangements, mathematical formulas, and numerical values of the components and steps described in the embodiments do not limit the scope of the present disclosure.

[0031] The following description of at least one exemplary embodiment is merely illustrative and in no way constitutes a limitation on the present disclosure or its application or use.

[0032] Technologies, methods, and devices known to those skilled in the relevant art may not be discussed in detail herein, but when appropriate, their descriptions, methods, and devices are considered to be part of this specification.

[0033] In all the examples shown and discussed in this specification, any specific values are merely illustrative and should not be construed as limitations. Therefore, other examples of the exemplary embodiments can have different values.

[0034] It should be noted that similar reference numbers and reference characters refer to similar items in the following accompanying drawings. Therefore, if an item is defined in one of the accompanying drawings, that item does not need to be further discussed in subsequent accompanying drawings.

[0035] Referring to FIGS. 1 to 5, an embodiment of the present disclosure provides a heat exchange plate applied to a battery. The heat exchange plate includes a heat exchange region 203 and a battery region 204, wherein the heat exchange region is disposed around the battery region, and the battery region is a battery protruding region of the battery on the heat exchange plate, the heat exchange region 203 and the battery region 204, and a flow path 21, wherein the flow path 21 is disposed within the heat exchange plate, and the flow path is configured to enable a heat exchange working medium to flow therein, and the flow path includes a first type flow path 100 and a second type flow path, the flow path 21.

[0036] The first type flow path 100 is located in the heat exchange region 203, and the second type flow path 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 basically does not branch after branching one or two times, goes around the outer edge of the heat exchange plate, and finally converges again at a position close to the flow path outlet. These flow paths are configured to balance the temperature of the working medium at the end of the flow. In particular, when a phase change cooling working medium is used, these flow paths can play a better role. The volume of the working medium after phase change changes greatly, which is likely to cause problems such as deposition, poor circulation, and temperature concentration. This problem is likely to become very serious at the flow convergence end. The working medium in the outermost circulating flow path branches less frequently, so that the working medium in the outermost flow path has a relatively small phase change and can be configured to balance the temperature and phase state of the working medium in other flow paths at the end of the entire circulation. This ensures the smoothness and uniformity of the entire circulation.

[0038] When the first type of flow path 100 surrounds the battery region and is located on the outer periphery of the battery protruding region, the first type of flow path can not only exchange heat for the region 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.

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

[0040] Optionally, the length of the first type of flow path is shorter than the length of the second type of flow path, and / or The number of branchings of the first type of flow path is less than the number of branchings of the second type of flow path.

[0041] Specifically, the first type of flow path 100 is located within the heat exchange region 203, that is, the first type of flow path 100 encircles the outer edge of the heat exchange plate, whereby the second type of flow path is located inside the first type of flow path 100. However, after the first type of flow path 100 branches one or two times, the first type of flow path basically no longer branches. Also, although the number of branchings of the first type of flow path 100 is small, the second type of flow path needs to branch multiple times and change direction in the heat exchange plate, and the flow paths are evenly distributed in the heat exchange plate. Therefore, in order to ensure the balance of the flow path distribution in the heat exchange plate, the length of the first type of flow path is shorter than the length of the second type of flow path, and the number of branchings of the first type of flow path is less than the number of branchings of the second type of flow path.

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

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

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

[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 be composed of a group of battery cores, or may be composed of a plurality of groups of arranged battery cores. For example, referring to FIG. 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 part of the flow path 21 is curved in each of the first heat exchange module and the second heat exchange module, whereby the area for arranging the flow path 21 in the first heat exchange module and the second heat exchange module can be increased. Therefore, this increases the effective heat exchange area of the heat exchange plate 2 and the heat exchange amount of the heat exchange plate 2 for the battery.

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

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

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

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

[0050] Along the direction from the first terminal end 221 to the second terminal end 222, the first circulation flow path 100 extends to pass through the first sub-zone 2621, the first partition region 271, the first sub-region 2611, the second sub-zone 2622, the second partition region 272, and the second sub-region 2612 in sequence, and then extends back along the edge of the heat exchange plate to pass through the second partition region 272, the second sub-zone 2622, the first sub-region 2611, the first partition region 271, and the first sub-zone 2621.

[0051] Specifically, along the direction from the first terminal end 221 to the second terminal end 222, when the first circulation flow path 100 extends to pass through the first sub-zone 2621 for the first time, it makes the first branch, and when it extends to pass through the first sub-zone 2621 for the second time, it makes the first convergence.

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

[0053] Optionally, when the second type flow path extends from the first terminal end 221 to the second terminal end 222, it branches at least twice and branches at most six times.

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

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

[0056] Specifically, along the direction from the first end portion 221 to the second end portion 222, the second circulation channel extends from the first end portion 221 through the first sub-zone 2621, the first partition region 271, the first sub-region 2611, the second sub-zone 2622, the second partition region 272, and the second sub-region 2612 in sequence, and then the second circulation channel bends and extends in the second sub-region 2612 and the second partition region 272, and further extends to pass through the second sub-zone 2622, the first sub-region 2611, the first partition region 271, and the first sub-zone 2621 in sequence and returns to the second end portion 222.

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

[0058] Specifically, the second circulation channel makes the first branch when extending to pass through the first sub-zone 2621 for the first time, makes the second and third branches in the second sub-region 2612, makes the first convergence when extending back from the second partition region 272 to the second end portion 222, and makes the second and third convergences when extending to pass through the first sub-zone 2621 for the second time.

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

[0060] Specifically, along the direction from the first terminal end 221 to the second terminal end 222, the third circulation flow path extends from the first terminal end 221 to pass through the first sub-zone 2621, the first partition region 271, the first sub-region 2611, and the second sub-zone 2622 in sequence. Then, the third circulation flow path bends and extends in the second sub-zone 2622 and the second partition region 272, and further extends to pass through the second sub-zone 2622, the first sub-region 2611, the first partition region 271, and the first sub-zone 2621 in sequence, and returns to the second terminal end 222.

[0061] The third circulation flow path changes its direction four times in the second sub-zone 2622.

[0062] Specifically, along the direction from the first terminal end 221 to the second terminal end 222, the third circulation flow path makes the first branch when passing through the first sub-zone 2621 for the first time, makes the second and third branches when extending to pass through the second sub-zone 2622 for the first time, makes the first and second convergences in the second partition region 272, and makes the third and fourth convergences when extending to pass through the first sub-zone 2621 for the second time.

[0063] Along the direction from the first terminal end 221 to the second terminal end 222, the fourth circulation flow path 400 extends from the first terminal end 221 to pass through the first sub-zone 2621, the first partition region 271, and the first sub-region 2611 in sequence. Then, it returns and extends to pass through the first partition region 271, extends to the first sub-zone 2621, then bends and extends to enter the first partition region 271 and the first sub-region 2611. Finally, the fourth circulation flow path returns and extends to pass through the first partition region 271 again, extends to the first sub-zone 2621, and returns to the second terminal end 222.

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

[0065] Specifically, when the fourth circulation channel extends to pass through the first sub-zone 2621 for the first time, it makes the first branch; when it extends to pass through the first sub-region 2611 for the first time, it makes the second and third branches; when it extends to pass through the first sub-zone 2621 for the second time, it makes the fourth branch; when it extends to pass through the first sub-region 2611 for the second time, it makes the first and second convergences; when it extends to pass through the first sub-zone 2621 for the third time, it makes the third and fourth convergences.

[0066] In one embodiment, referring to FIGS. 8 to 11, the flow channel includes a plurality of trunk parts, a plurality of stages of branch parts, and a plurality of stages of flow branch / convergence points, and the flow branch / convergence points branch or converge the flow channel according to the flow direction of the working medium.

[0067] The trunk part includes a plurality of first trunk parts 31 and a second trunk part 41, the first trunk part 31 is connected to the first terminal end, and the second trunk part 41 is connected to the second terminal end.

[0068] One of the first trunk parts 31 passes through the first-stage flow branch / convergence point 2121 to form two first-stage branch parts 101, and one first-stage branch part 101 passes through the second-stage flow branch / convergence point 2122 to form two second-stage branch parts 102 and extends into the heat exchange region. The two second-stage branch parts 102 serve as the first-type flow channels, and the first-stage flow branch / convergence point 2121 and the second-stage flow branch / convergence point 2122 form the flow branch point 212.

[0069] One end of one of the two second-stage branch parts 102 away from the first trunk part 31 is connected to one of the second trunk parts 41 through a flow branch.

[0070] In one embodiment, another first-stage branch portion 101 formed after one of the first trunk portions 31 passes through the first-stage flow branching / converging point 2121 extends into the battery region, and the first-stage branch portion 101 and the branch portion formed after the first-stage branch portion passes through the flow branching / converging point are of the second type of flow path.

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

[0072] Optionally, in order to reduce the temperature and volume differences caused by the phase change of the working medium and improve the energy utilization in the heat exchange plate, the second-stage branch portion 102 that serves as the first type of flow path passes through the second-stage flow branching / converging point 2122 at a position close to the second trunk portion 41 to form the first-stage branch portion 101. The first-stage branch portion 101 that serves as the second type of flow path and another first-stage branch portion 101 are connected to one of the second trunk portions 41 through the first-stage flow branching / converging point 2121, and the first-stage flow branching / converging point 2121 and the second-stage flow branching / converging point 2122 are arranged adjacent to each other.

[0073] Optionally, at a position close to the second trunk portion 41, the second-stage flow branching / converging point 2122 connected to the second-stage branch portion 102 that serves as the first type of flow path and the second-stage flow branching / converging point 2122 connected to the second-stage branch portion 102 that serves as the second type of flow path are arranged adjacent to each other, which can also reduce the temperature and volume differences caused by the phase change of the working medium and improve the energy utilization in the heat exchange plate.

[0074] One embodiment of the present disclosure is a battery tray, and the battery tray includes a heat exchange plate and a battery module, wherein the heat exchange plate covers the battery module, and the battery module is located at a position corresponding to the battery region. A battery tray is provided.

[0075] Specifically, the battery module is located at a position corresponding to the battery area. When the first type of flow path 100 surrounds the battery area and is located on the outer periphery of the battery protruding area, the first type of flow path can not only exchange heat for the area around the battery module, but also ensure the heat exchange of the heat exchange plate for the entire battery. In the middle part of the heat exchange plate, the second type of flow path including the second circulation flow path, the third circulation flow path, and the fourth circulation flow path is configured to exchange heat for most 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 battery module and the second battery module are arranged side by side, and the heat exchange area of the heat exchange plate surrounds the entire outer periphery of the first battery module and the second battery module.

[0077] Specifically, referring to FIG. 6, the battery pack includes a heat exchange plate 2 and a plurality of battery cores 1. Posts are provided at both ends of each battery core 1. The plurality of battery cores are arranged along a first direction, and in order to increase the energy density of the battery pack, the first direction may be the X direction in FIG. 1. The heat exchange plate is arranged on one or two sides of the battery core along a second direction. The second direction may be the Z direction in FIG. 1. The side surfaces of the plurality of battery cores 1 along the second direction form the large surfaces of the battery core 1. The heat exchange plate is arranged close to one or two large surfaces of the battery core 1, which can ensure the heat exchange effect of the heat exchange plate for the battery core.

[0078] In addition, the plurality of 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 assembly 22, and the first terminal end 221 and the second terminal end 222 are located on the inlet and outlet assembly 22. The first battery module 11 can correspond to the first heat exchange module on the heat exchange plate, and the second battery module 12 can correspond to the second heat exchange module on the heat exchange plate.

[0079] Specifically, the flow path of the first type region 26 may face the first battery module 11 and may be close to the inlet and outlet assembly 22, that is, the flow path of the first type region 26 is located at the proximal end of the heat exchange plate. The flow path 21 of the second type region 27 may be far away from the inlet and outlet assembly 22, that is, the flow path of the second type region 27 is located at the distal end of the heat exchange plate. In order to ensure a balanced heat exchange effect at the proximal end and the distal end of the heat exchange plate, 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 flow path 21 opposite to the second battery module 12 is set to the second flow rate, and the first flow rate is 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 the third direction. The third direction may be the Y direction in FIG. 1. That is, each battery core 1 may extend along the third direction to form a long strip-shaped battery core. The first direction, the second direction, and the third direction may be parallel to the width direction, the height direction, and the length direction of the battery core 1, respectively. When the first direction, the second direction, and the third direction are perpendicular to each other, the plurality of battery cores 1 may form a small battery pack structure to ensure the energy density of the battery pack.

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

[0082] Specifically, the heat exchange plate can be disposed on one side or two sides of the battery core along the second direction. When the heat exchange plate can be disposed on one side of the battery core along the second direction, for example, when the heat exchange plate is disposed on the lower side of a plurality of battery cores, the heat exchange plate can form the lower plate of the battery pack. On the other 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 impacted. When the heat exchange plate is disposed on the upper side of a plurality of 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 further provides a vehicle including a heat exchange plate or including a battery pack.

[0084] This technical solution further provides a heat exchange flow path device that can be used on an electric vehicle, and the heat exchange flow path device can provide a good heat exchange effect for the battery. When the battery needs to be heated, the heat exchange agent having heat can be conducted through the flow path 21 to various regions of the battery to assist in battery heating. When the battery needs to be cooled, the flow path 21 can be used in the reverse direction, whereby the heat exchange agent having a low temperature is conducted in the reverse direction through the flow path 21 to various regions of the battery to assist in battery cooling.

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

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

[0087] The heat exchange plate 2 may include a flow path plate 24 and a base plate 23. Various flow paths 21 are provided on the flow path plate 24. The flow path 21 extends from the flow convergence end into the inside of the flow path plate 24. The flow path 21 is branched by the flow branching / convergence points to form more stages of branches. These flow paths 21 are then arranged through the direction change points, and in order to achieve the flow heat exchange in each region, the branches cover the entire flow path plate 24.

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

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

[0090] The first aspect This technical solution can divide the heat exchange plate 2 into different regions to perform different degrees of heat exchange processing on different regions. After flowing into the flow channel 21 from the terminal end, the working medium first necessarily flows into the region for heat exchange, and then, based on the layout characteristics of flowing into the region for heat exchange, the flow channel 21 can be selectively arranged according to the heat conditions in different regions.

[0091] In practical applications, since different battery structures are provided in different regions of the integrated battery structure, the degree of heat generated during operation also varies. This is related to the arrangement and configuration of the battery electrode cores. As shown in FIG. 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 the region where the electrode core generates relatively high heat in the integrated battery structure, and the second type region 27 corresponds to the region where the electrode core generates relatively low heat in the integrated battery structure. In the embodiment shown in FIG. 2, the electrode cores of the battery can be arranged in two rows as shown in FIG. 12. Since tabs are usually provided at both ends of the electrode core for electrical connection, more heat is generated. Therefore, the leftmost longitudinal region in FIG. 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 of these three regions correspond to the large heat generation regions at both ends of the electrode core.

[0092] When the electrode cores of the integrated battery structure are arranged in other ways, or when the electrode cores are electrically connected in other ways, the positions and numbers of the first type region 26 and the second type region 27 are different. This technical solution uses the cases shown in FIGS. 12 and 2 as an example to explain the design features of this part.

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

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

[0095] When the heat exchange plate 2 is in the cooling mode, the flow path 21 is designed such that the working medium can flow from the first type region 26 to the second type region 27. That is, the flow path 21 is designed such that the working medium first flows into the flow path 21 in the first type region 26 and then into the flow path 21 in the second type region 27. In this way, the working medium can first perform heat exchange in the first type region 26, preferentially absorb the heat generated by the battery structure corresponding to the first type region 26, and then the heat exchange capacity of the working medium decreases. Thereafter, the working medium flows into the second type region 27 and exchanges heat with the battery corresponding to this region. Finally, the working medium flows to the end portion and flows out of the heat exchange plate 2.

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

[0097] The heating of the battery electrode core is usually constant. Regardless of the external environment and whether the battery is in a discharged state or a charged state, as shown in FIG. 12, a part of the electrode core where tabs and electrical connection points are provided is always a region that generates higher heat, and the middle region of the electrode core generates medium heat, that is, the part of the electrode core where no electrical connection points and tabs are provided is not likely to generate heat. When heating is required, the region of the electrode core without tabs often becomes cooler and requires more heat. When cooling is required, the region of the electrode core with tabs often becomes hotter and requires better cooling. The advantage of this design is that the flow path 21 of the heat exchange plate 2 is arranged based on the operating characteristics of the battery electrode core according to different regions with different heat generations. Furthermore, the flow directions of the working media used in the heating mode and the cooling mode are opposite. During heat dissipation, the working media first flow along the flow path 21 to the region with higher heat. During heating, the working media first flow along the flow path 21 to the region with lower heat. This enables the working media to preferentially flow to the regions that require heat exchange.

[0098] Optionally, the first type region 26 corresponds to the first position of the battery, and the second type region 27 corresponds to the second position of the battery. When the battery operates, the heat generated by the battery at the first position is basically greater than the heat generated by the battery at the second position. Corresponding to the embodiment shown in FIG. 12, the first position corresponds to the left vertical bar, the middle vertical bar, and the right vertical bar shown in FIG. 2. The second position may correspond to the region sandwiched between the left vertical bar and the middle vertical bar, or may correspond to the region between the right vertical bar and the middle vertical bar. In other solutions for battery and electrode core distribution, the arrangements and numbers of the first position and the second position may vary, but this does not deviate from the arrangement concept of the flow path 21 described above. The flow path 21 can always be led to the first type region 26 and then extended to the second type region 27 without repeatedly extending between the first type region 26 and the second type region 27.

[0099] As shown in FIG. 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 the first terminal end 221. The second flow convergence end is a connection point where the flow path 21 converges to the second terminal end 222.

[0100] When the heat exchange plate 2 is configured to heat the battery, the working medium 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 medium preferentially flows into the second type region 27 having a lower temperature to heat the second type region 27, and then flows into the first type region 26. Finally, the working medium can flow out from the first flow convergence end after convergence. Prioritizing the heating of the position 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 better provide temperature protection for the central region of the electrode core where it is difficult to prevent an excessively low temperature by generating heat.

[0101] When the heat exchange plate 2 is configured to cool the battery module, the working medium 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 medium preferentially flows into the first type region 26 having 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 FIG. 2, the first flow convergence end and the second flow convergence end are concentrated on the left side of the heat exchange plate 2. When arranging the flow path 21, due to the limitation of the panel space, there may be a possibility that the flow path 21 cannot be arranged in the above ideal way. In the embodiment shown in FIG. 2, for the three regions 2622, 2612, and 272 located on the right side, according to an optional configuration of the flow path 21, 272 can be preferentially heated, or 2622 and 2612 can be preferentially cooled. In the three regions 2621, 2611, and 271 located on the left side near the flow convergence end and the inlet and outlet, due to the relative density of the flow path 21, the above optional configuration cannot be implemented. In this regard, the following embodiments can be adopted. That is, the flow path 21 is introduced from the first flow convergence end, and then first arranged in the 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, in order to better realize temperature control on the entire surface, the flow path can branch the working medium through a flow branch. For example, the working medium flowing from the first flow convergence end to the first type region 26 can be branched into more branch flow paths 21 in the first type region 26. Then, when the working medium flows into the second type region 27, no flow convergence and branching are required as shown in the region 271 of FIG. 3. Finally, after the working medium enters the region 2621 along the flow path 21, the flow path 21 can be converged to collect the working medium, so that the working medium can flow out from the second flow convergence end.

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

[0105] When the working medium is configured to heat the battery module, i.e., when the working medium flows in from the second flow convergence end and flows out from the first flow convergence end, the flow path 21 has an expansion characteristic opposite to cooling. The working medium first branches one or two times and disperses into various regions along the pipeline, and then converges at least once and flows to the first flow convergence end.

[0106] In particular, the working medium in this solution can be selected as a cooling working medium that can be switched between a gas phase and a liquid phase. This type of cooling working medium can effectively perform heat exchange through a phase state change and has a higher heat exchange efficiency than conventional water cooling, coolants, and other methods. In contrast, due to the phase state change of the cooling working medium, when the cooling working medium is concentrated in a certain area and experiences a significant phase change, other areas cannot obtain a good heat exchange effect. In this regard, this solution uses a flow branching method such as branching one flow path into two as much as possible and branching two flow paths into four to improve the uniformity of the working medium flow in the flow path 21. Optionally, this solution uses a plurality of parallel flow paths 21 with lengths changing as evenly as possible to jointly perform heat exchange in the first type region 26 and the second type region 27, and further reduce the concentrated phase change of the working medium caused by uneven flow.

[0107] As shown in FIGS. 1 and 2, in the left region near the flow convergence end, that is, in the three regions 2621, 271, and 2611, due to the congested space, this solution can preferentially arrange the flow bifurcation points and flow convergence points in the two regions 2621 and 2611. These two regions correspond to the high heating regions of the battery. Performing bifurcation and convergence in these regions helps to reduce the high-speed and concentrated heat exchange of the working medium in the narrow space, so that the working medium can perform heat exchange more evenly in these regions. For example, the working medium flowing from the first flow convergence end can concentrate at the corner of the region 2621, and the first bifurcation can be performed, and then the second bifurcation can be performed at the upper part of 2611. Thereafter, some flow paths 21 can bifurcate again at the lower part of the region 271, while other flow paths 21 do not need to bifurcate. Finally, when the flow path 21 extends to the lower part of the region 2621, the flow path can concentrate and converge, and then return to the second flow convergence end. Usually, the flow convergence can be performed one or two times. The above description uses heat dissipation as an example. During heating, the forms of bifurcation and convergence are completely opposite.

[0108] Optionally, as shown in FIGS. 1 and 2, in the right region away from the flow convergence end, that is, in the three regions 2622, 2612, and 272, the space is relatively large. This solution can preferentially and evenly distribute the flow branch points and flow convergence points at the upper and lower ends of the three regions, and the number of times of flow branching and convergence can correspondingly be made larger. Using the solution of cooling 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 the regions 2622 and 2612. In these two regions, the flow path 21 can extend linearly and can extend longitudinally across most of the areas of the two regions. Then, the flow path 21 can turn back to the region 272 between 2622 and 2612. The flow path 21 usually extends linearly through the region 272, and finally, the parallel flow paths 21 converge at the lower part of the 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. Then, the flow path converges two to three times to converge to the trunk and returns to the flow convergence end. Similarly, in the heating mode, the working medium flows in from the second flow convergence end, flows directly to the lower part of the region 272, and branches multiple times to form a plurality of parallel flow paths.

[0109] In particular, among the flow paths 21 introduced from the first flow convergence end, the outermost flow path 21 basically does not branch after the first branch, goes 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 paths 21 are configured to balance the temperature of the working medium at the ends of the flow. In particular, when a phase change cooling working medium is used, these flow paths 21 can play a better role. The volume of the working medium after phase change changes greatly, which is likely to cause problems such as deposition, poor circulation, and temperature concentration. This problem is likely to become very serious at the flow convergence end. The working medium in the outermost circulating flow path 21 has a relatively small phase change and can be configured to balance the temperature and phase state of the working medium in other flow paths 21 at the end of the entire circulation. This ensures the smoothness and uniformity of the entire circulation.

[0110] According to a first aspect of the present disclosure, this solution provides a heat exchange plate applied to a battery, and the heat exchange plate a first type region 26 and a second type region 27, and flow paths 21, the flow paths 21 being configured to allow a working medium to flow, and the flow paths 21 being distributed in the first type region and the second type region.

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

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

[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 medium flows into the second type region 27 from the second flow convergence end, passes through the first type region 26, and converges into 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 medium flows into the first type region 26 from the first flow convergence end, passes through the second type region 27, and converges into the second flow convergence end.

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

[0118] Optionally, in the process where the working medium flows into the second type region 27 from the second flow convergence end, passes through the first type region 26, and converges into the first flow convergence end, the working medium branches at least twice and / or converges at least once.

[0119] Optionally, in the process where the working medium flows into the second type region 27 from the second flow convergence end, passes through the first type region 26, and converges into 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 a first partition region 271.

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

[0123] Optionally, when the heat exchange plate 2 is 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 working medium branches at least once and converges 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.

[0125] Optionally, when the heat exchange plate 2 is configured to cool the battery, the working medium branches at least once at the first partition 261 and then flows into the first partition region 271 of the second type region 27.

[0126] Optionally, when the heat exchange plate 2 is configured to cool the battery, the working medium branches at least once at 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 a first sub-region 2611, the second partition 262 of the first type region 26 includes a 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 sub-zone 2621, the first partition region 271, and the first sub-region 2611.

[0129] Optionally, this open-loop circulation includes the working medium flowing from the first sub-zone 2621 to the first partition region 271, then to the first sub-region 2611, then to the first partition region 271, then to the first sub-zone 2621, then to the first partition region 271, then to the first sub-region 2611, then to the first partition region 271, then to the first sub-zone 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 makes the first branch in the first sub-region 2611, the 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 the cooling mode, the working medium 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 the cooling mode, the working medium branches at least twice in the process of flowing from the first partition 261 to the second type region 27.

[0135] Optionally, the working medium branches at least twice and converges at least once in the process of flowing from the first partition 261 to the second type region 27.

[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 the cooling mode, the working medium 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 region 26 to the first partition region 271.

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

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

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

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

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

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

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

[0146] Optionally, the working medium bifurcates twice in the second subregion 2612.

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

[0148] Optionally, the first subregion 2611 is adjacent to the second subzone 2622.

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

[0150] Optionally, the working medium flows through the second subzone 2622, the second partition region 272, the second subregion 2612, and the second partition region 272 in sequence, and flows out from the second partition region 272.

[0151] Optionally, the working medium flows into the second partition region 272 from the second subzone 2622 and flows out from the second partition region 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 in the heat exchange region.

[0153] Optionally, the flow path 21 located between the heat exchange region and the third type region bifurcates at most six times or converges at most 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 subregion 2611, and the first partition region 271, and then flows out from the first subzone 2621.

[0156] 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 subregion 2611, the second subzone 2622, the second partition region 272, the second subregion 2612, the second partition region 272, the second subzone 2622, the first subregion 2611, and the first partition region 271, and then enters and flows out from 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 region 271 of the second type region 27 to the second partition 262 of the first type region 26.

[0160] Optionally, when the heat exchange plate 2 is 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 region 271 of the second type region 27 to the second partition 262 of the first type region 26 and converges at least once after flowing into the second partition 262.

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

[0163] Optionally, when the heat exchange plate 2 is configured to heat the battery, the working medium branches at least once and then flows into the first partition 261 of the first type region 26, and branches 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 a first sub-region 2611, the second partition 262 of the first type region 26 includes a 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 sub-zone 2621, the first partition region 271, and the first sub-region 2611.

[0166] Optionally, in this open-loop circulation, the working medium flows from the first sub-zone 2621 to the first partition region 271, then to the first sub-region 2611, then to the first partition region 271, then to the first sub-zone 2621, then to the first partition region 271, then to the first sub-region 2611, then to the first partition region 271, then to the first sub-zone 2621.

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

[0168] Optionally, the working medium makes the first branching in the first sub-zone 2621 and the second branching in the first sub-region 2611, returns to the first sub-zone 2621, and then converges once.

[0169] Optionally, the working medium flows into the flow path 21 from a position close to the first sub-zone 2621. The working medium flows from the first sub-zone 2621 to the first partition region 271 and then further returns to the first sub-zone 2621. The process of flowing out from the flow path 21 includes at least two branchings and at least two convergences.

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

[0171] The second type region 27 includes the first partition region 271 and the second partition region 272.

[0172] The second partition region 272 is located between the second sub-zone 2622 and the second sub-region 2612, and the first partition region 271 is located between the first sub-region 2611 and the first sub-zone 2621.

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

[0174] Optionally, some of the flow paths 21 cause the working medium to pass through the edges of the first sub-zone 2621, the first partition region 271, the first sub-region 2611, and the second sub-zone 2622, first flow into the second partition region 272, and then branch into the second sub-zone 2622 and the second sub-region 2612.

[0175] Optionally, some other flow paths 21 cause the working medium to pass through the edges of the first sub-zone 2621 and the first partition region 271, first flow into the first sub-region 2611, then branch into the first partition region 271, and finally flow into the first sub-zone 2621.

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

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

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

[0179] Optionally, the flow path 21 causes the working medium flowing into the first sub-zone 2621 to converge once in the first sub-zone 2621, flow back into the first sub-region 2611, and then converge again.

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

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

[0182] When the heat exchange plate 2 is in the cooling mode, the working medium branches at least twice at the first partition 261 and then flows into the second type region 27, converges at least twice in the second type region 27, and then flows 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 portion 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 portion. The first heat exchange region includes the second type region 27 and the first type region 26 distributed on two opposite side portions of the second type region 27.

[0185] The second heat exchange region includes the second type region 27 and the first type region 26 distributed on two opposite side portions of the second type region 27.

[0186] When the heat exchange plate 2 is in the cooling mode, in the second heat exchange region, the working medium branches once in one first type region 26 and then flows into another first type region, branches once in another first type region 26 and then flows into the second type region 27, converges twice in the second type region 27 and then flows into the second flow convergence end.

[0187] When the heat exchange plate 2 is in the cooling mode, in the first heat exchange region, the working medium branches once in one first type region 26 and then flows into the second type region 27, converges twice in the second type region 27 and then flows into the second flow convergence end.

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

[0189] The first type regions 26 distributed on two opposite side portions 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 the cooling mode, in the first heat exchange region, the working medium flows into the second type region 27 after bifurcating 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 bifurcating twice at the second partition 262, and flows into the second flow convergence end after converging twice in the second type region 27.

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

[0193] Embodiments of the present disclosure further provide a heat exchange plate in four aspects.

[0194] According to the first aspect, referring to FIGS. 1 to 17, embodiments of the present disclosure provide a heat exchange plate. The heat exchange plate includes a first terminal end 221 and a second terminal end 222, a first flow convergence end and a second flow convergence end, wherein the first flow convergence end is connected to the first terminal end 221, and the second flow convergence end is connected to the second terminal end 222, the first flow convergence end and the second flow convergence end, a flow path 21, which is configured to connect the first flow convergence end and the second flow convergence end, and the flow path extends from the first flow convergence end to the second flow convergence end after at least one direction change.

[0195] Specifically, the heat exchange plate 2 can be provided with a flow branching component 22, and the first end portion 221 and the second end portion 222 can be arranged on the flow branching component 22 as shown in FIG. 12. The first end portion 221 and the second end portion 222 can be configured to connect the heat exchange plate to an external component that provides a working medium. For example, an external pump can be connected to the heat exchange plate through the first end portion 221 and the second end portion 222.

[0196] The first flow converging end and the second flow converging end can be used as end structures at two ends of the flow path 21. For example, the first flow converging end and the second flow converging end can be used as end structures configured to block two ends of the flow path 21 or connect them to the first end portion 221 and the second end portion 222 respectively by screws. The flow path 21 in the heat exchange plate extends from the first flow converging end to the second flow converging end after at least one direction change in order to improve the distribution density of the flow path 21 in the heat exchange plate. For example, in order to ensure the distribution density of the flow path 21 in the heat exchange plate, the flow path 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] Optionally, referring to FIG. 17, the direction change point 211 is formed at the direction change position of the flow path 21. The direction change point includes a first type direction change point 2111. The flow path direction at one end of the first type direction change point 2111 forms a direction change angle with the flow path direction at the other end of the first type direction change point 2111. In addition, the number of flow paths at one end of the first type direction change point 2111 is larger than the number of flow paths at the other end of the first type direction change point 2111.

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

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

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

[0201] Optionally, referring to FIGS. 2 and 17, the first type of flow turning point 2111 is located at the periphery of the heat exchange plate, and the second type of flow turning point 2112 is located in the middle of the heat exchange plate. Since both the first type of flow turning point 2111 and the second type of flow turning point 2112 have a flow turning function, the flow path 21 can change direction during bending at both the periphery and the middle of the heat exchange plate. Further, the number of flow paths at one end of the first type of flow turning point 2111 is larger than the number of flow paths at the other end of the first type of flow turning point 2111, whereby after the flow path 21 branches and converges at the periphery of the heat exchange plate, a smooth flow of the flow path 21 in the middle of the heat exchange plate can be ensured.

[0202] Optionally, referring to FIGS. 12 and 7, the first terminal end 221, the second terminal end 222, the first flow convergence end, and the second flow convergence end are all located on the first side portion of the heat exchange plate. For example, the heat exchange plate may be a rectangular plate, and the first side portion may be the left side portion of the heat exchange plate in FIG. 3. In the flow path 21, in order to improve the heat exchange efficiency of the working medium of the flow path 21 in the heat exchange plate, coolants such as R123a and R32 and working media such as CO2 and water can enter the flow path 21 from the left side portion of the heat exchange plate, flow around the heat exchange plate, perform heat exchange, and then flow out of the flow path 21 from the left side portion of the heat exchange plate.

[0203] Optionally, referring to FIGS. 12, 7, and 17, the first flow convergence end is connected to two second-type direction change points 2112, and the second flow convergence end is connected to two first-type direction change points 2111. Specifically, when the heat exchange plate performs cooling, the first flow convergence end may be the inlet of the working medium in the flow path 21, and the second flow convergence end may be the outlet of the working medium in the flow path 21. When passing through the first flow convergence end and flowing into the flow path 21, the working medium may be preliminarily redirected. When passing through the second flow convergence end and flowing out of the flow path 21, the working medium can converge while changing direction. That is, the working medium can flow out of the flow path 21 from the flow convergence end after convergence, which can simplify the connection between the flow path 21 and 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] Optionally, referring to FIGS. 1 and 2, the heat exchange plate is square, and first-type direction change points 2111 and second-type direction change points 2112 are provided at three corner positions of the heat exchange plate, and one corner position of the heat exchange plate is provided with a first-type direction change point 2111.

[0206] Specifically, as shown in FIG. 2, the heat exchange plate may be a square heat exchange plate. In FIG. 2, at the upper left corner of the heat exchange plate, that is, the corner of the heat exchange plate close to the first flow convergence end, one or more first-type direction change points 2111 can be provided, whereby the working medium flowing from the first flow convergence end or attempting to flow out of the flow path 21 from the first flow convergence end can branch or converge at high speed.

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

[0208] Optionally, referring to FIG. 2, a plurality of second-type direction change points 2112 extend in a rectangle.

[0209] Specifically, the second-type direction change point 2112 can bend by 90° or 180° during direction change. For example, when the second-type direction change point 2112 bends by 90°, a plurality of consecutive second-type direction change points 2112 can form a combination of rectangular second-type direction change points 2112, that is, a plurality of second-type direction change points 2112 can form a zigzag structure extending in a rectangle. The plurality of second-type direction change points 2112 having a zigzag structure can improve the heat exchange efficiency of the heat exchange plate.

[0210] Optionally, referring to FIG. 2, a plurality of first-type direction change points 2111 are arranged side by side. Specifically, when the horizontal flow path is changed to a vertical flow path, the flow path can branch or converge simultaneously, whereby the first-type direction change point 2111 can be formed between the horizontal flow path and the vertical flow path. When a plurality of rows of horizontal flow paths are changed to a plurality of rows of vertical flow paths, the plurality of first-type direction change points 2111 arranged side by side can be formed so as to increase the flow path density of the horizontal flow path and the vertical flow path after direction change.

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

[0212] According to a second aspect, referring to FIGS. 2 to 17, embodiments of the present disclosure provide a heat exchange plate. The heat exchange plate includes a first flow convergence end and a second flow convergence end, and A flow path 21 configured to connect a first flow convergence end and a second flow convergence end, the flow path 21, A flow branching / converging point 212, where the flow branching / converging point 212 is distributed on the flow path 21 and the number of the flow path 21 at two ends of the flow branching / converging point 212 is different, the flow branching / converging point 212, is included.

[0213] Specifically, the first flow convergence end and the second flow convergence end can be used as end structures at two ends of the flow path 21. For example, the first flow convergence end and the second flow convergence end can be used as end structures configured to block two ends of the flow path 21 or connect them to a first terminal end 221 and a second terminal end 222 respectively by screws. The distribution of the flow path 21 in the heat exchange plate extends from the first flow convergence end to the second flow convergence end after branching at least once and converging at least once. In order to improve the distribution density of the flow path 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 path 21. This flow branching may branch one flow path into two, branch one flow path into three, or branch one flow path into more, and the flow convergence may converge two flow paths into one, converge three flow paths into one, or converge more flow paths into one.

[0214] Optionally, referring to FIG. 2, the flow path 21 includes a trunk portion and a branch portion. The trunk portion is connected to the first flow convergence end and the second flow convergence end. The branch portion is connected to an end of the trunk portion away from the first flow convergence end and the second flow convergence end.

[0215] Specifically, the trunk of the flow path 21 can be a part of the flow path that is directly connected to the first flow convergence end and the second flow convergence end and is neither branched nor converged. On the other hand, the branch part can be a part of the flow path that is connected to the trunk after branching from the trunk or converging to the trunk. Thereby, in order to ensure the distribution density of the flow path 21 on the heat exchange plate, the number of branch parts is more than the number of trunk parts.

[0216] Optionally, referring to FIG. 8, the flow branch / convergence point 212 includes the first-stage flow branch / convergence point 2121, and the branch part includes the first-stage branch part. The first-stage flow branch / convergence point 2121 is connected between the trunk and the first-stage branch part.

[0217] Specifically, the first-stage flow branch / convergence point 2121 functions as a branching or converging structure between the trunk and the first-stage branch part, and the working medium in the trunk can be evenly branched into two or more first-stage branch parts. Thereby, in order to ensure the distribution density of the flow path 21 and the flexibility of heat exchange adjustment on the heat exchange plate, the working medium is dispersed as early as possible on the heat exchange plate.

[0218] Optionally, at least two first-stage branch parts are arranged. That is, in order to ensure the distribution density of the flow path 21 on the heat exchange plate, the first-stage flow branch / convergence point 2121 can evenly branch the working medium in the trunk into two, three, or more first-stage branch parts.

[0219] In a specific embodiment, referring to FIG. 8, one end of the first-stage flow branch / convergence point 2121 is connected to one of the trunks, and the other end of the first-stage flow branch / convergence point 2121 is connected to two of the first-stage branch parts. That is, the first-stage flow branch / convergence point 2121 can evenly branch the working medium in the trunk into two first-stage branch parts, thereby facilitating the control of the flow balance of the working medium in the two first-stage branch parts and ensuring the even flow of the working medium in the two first-stage branch parts.

[0220] Optionally, referring to FIGS. 2 and 8, the flow branch / convergence point 212 further includes a second-stage flow branch / convergence point 2122, and the branch portion includes a second-stage branch portion. The second-stage flow branch / convergence point 2122 is connected between the first-stage branch portion and the second-stage branch portion.

[0221] Specifically, the second-stage flow branch / convergence point 2122 functions as a branch or convergence structure between the first-stage branch portion and the second-stage branch portion, and can evenly branch the working medium in the first-stage branch portion into two or more second-stage branch portions. Thereby, in order to ensure the distribution density of the flow path 21 in the heat exchange plate and the flexibility of heat exchange adjustment, the working medium is dispersed in the heat exchange plate.

[0222] Optionally, at least two second-stage branch portions are arranged. That is, in order to ensure the distribution density of the flow path 21 in the heat exchange plate, the second-stage flow branch / convergence point 2122 can evenly branch the working medium in the first-stage branch portion into two, three, or more second-stage branch portions.

[0223] In a specific embodiment, referring to FIG. 8, one end of the second-stage flow branch / convergence point 2122 is connected to one of the first-stage branch portions, and the other end of the second-stage flow branch / convergence point 2122 is connected to two of the second-stage branch portions. That is, in order to facilitate the control of the flow balance of the working medium in the two second-stage branch portions, the second-stage flow branch / convergence point 2122 can evenly branch the working medium in the first-stage branch portion into two second-stage branch portions.

[0224] Optionally, referring to FIG. 2, the flow branch / convergence point 212 is located on the periphery of the heat exchange plate.

[0225] Specifically, when the flow branch / convergence point 212 is located on the periphery of the heat exchange plate, the continuous flow path 21 can be formed in the middle part of the heat exchange plate in order 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 portion includes an annular branch portion. The annular branch portion may be the first-type flow path 25 in FIGS. 1 and 3. Two ends of the annular branch portion are directly connected to the trunk portion. The trunk portion of the flow path 21 is a part of the flow path directly connected to the first flow convergence end and the second flow convergence end, and since it is not branched or converged, in order to ensure the temperature balance of the flow path 21 during heat exchange, the arrangement of the annular branch portion can simplify the flow path of the working medium in the annular branch portion and avoid excessive heating and cooling of the first flow convergence end and the second flow convergence end.

[0227] Optionally, referring to FIG. 2, the flow branch / branch point 212 further includes a third-stage flow branch point, the branch portion includes a third-stage branch portion, and the trunk portion is sequentially connected to the first-stage branch portion, the second-stage branch portion, and the third-stage branch portion.

[0228] The first-stage flow branch / convergence point 2121 is connected between the trunk portion and the first-stage branch portion, the second-stage flow branch / convergence point 2122 is connected between the first-stage branch portion and the second-stage branch portion, and the third-stage flow branch / convergence point is connected between the second-stage branch portion and the third-stage branch portion, whereby the number of the first-stage branch portions becomes twice the number of the trunk portions, the number of the second-stage branch portions becomes twice the number of the first-stage branch portions, and the number of the third-stage branch portions becomes twice the number of the second-stage branch portions.

[0229] In addition, the flow branch / convergence point 212 can further include a fourth-stage flow branch point, a fifth-stage flow branch point, a sixth-stage flow branch point, or more flow branch points. The branch portion includes a fourth-stage branch portion, a fifth-stage branch portion, a sixth-stage branch portion, or more branch portions. The fourth-stage flow branch point is connected between the third-stage branch portion and the fourth-stage branch portion, the fifth-stage flow branch point is connected between the fourth-stage branch portion and the fifth-stage branch portion, and the sixth-stage flow branch point is connected between the fifth-stage branch portion and the sixth-stage branch portion, whereby the flow path 21 forms multi-stage branching and convergence.

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

[0231] According to a third aspect, referring to FIGS. 1 to 17, an embodiment of the present disclosure provides a heat exchange plate. Referring to FIG. 13, the heat exchange plate includes a first region 28 and a second region 29, and a flow path 21, the flow path being distributed in the first region 28 and the second region 29, and an average distribution density of the flow path 21 in the first region 28 being greater than an average distribution density of the flow path 21 in the second region 29.

[0232] Specifically, the heat exchange plate can be configured to cool or heat a battery. For example, when the heat exchange plate cools the battery, a large amount of heat is generated at the positive electrode position and the negative electrode position during the operation of the battery. That is, the heat exchange plate needs to provide a better cooling effect for the positive electrode position and the negative electrode position of the battery. When the average distribution density of the flow path 21 in the first region 28 is greater than the average distribution density of the flow path 21 in the second region 29, the first region 28 faces the positive electrode position and the negative electrode position 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 embodiment of the present disclosure faces different heat exchange requirements at different positions, the heat exchange efficiency of the heat exchange plate can be improved through different distribution densities of the flow path 21, that is, the flow path 21 having a narrower width can be used for heat exchange. The width of the flow path 21 may be 3 mm to 12 mm. The width of the flow path 21 is also the radial size of the flow path 21. Optionally, in order to increase the distribution density of the flow path 21, the width of the flow path 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 FIGS. 1 to 17, an embodiment of the present disclosure provides a heat exchange plate. The heat exchange plate includes a flow path plate 24, and a flow path 21, where the flow path 21 is disposed on the flow path plate 24, and in the plane where the heat exchange plate is located, the area for disposing the flow path 21 is larger than 70% of the area of the flow path plate 24.

[0237] In particular, the ratio of the area of the flow path 21 in the flow path plate 24 can be flexibly set according to the heat exchange object of the heat exchange plate. For example, when exchanging heat for a heat exchange object such as a battery having high heat exchange requirements, for batteries having different powers and voltages, in order to improve the flexibility of heat exchange of the heat exchange plate, the area for disposing the flow path 21 can be set to 75%, 80%, 85%, 90%, or 95% of the area of the flow path plate 24.

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

[0239] Specifically, for the heat exchange plate provided by the embodiment of the present disclosure, when facing different heat exchange requirements at different positions, the heat exchange efficiency of the heat exchange plate can be improved through different distribution densities of the flow paths, that is, the flow path 21 having a narrower width can be used for heat exchange. The width of the flow path 21 may be 3 mm to 12 mm. The width of the flow path 21 is also the radial size of the flow path 21. Optionally, in order to increase the distribution density of the flow path 21, the width of the flow path 21 can be set to 5 mm to 10 mm.

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

[0241] An embodiment of the present disclosure is a battery tray, and the battery tray includes the heat exchange plate, or Further provided is a battery tray including a heat exchange plate.

[0242] One embodiment of the present disclosure further provides a battery structure. The battery structure includes the above battery tray.

[0243] In particular, the battery structure includes a battery module 1 having electrode positions and non-electrode positions, and a heat exchange plate 2 disposed below the battery module 1, with a flow path 21 for circulating a working medium disposed within the heat exchange plate 2, the heat exchange plate 2 including a first type region 26 facing the electrode positions and a second type region 27 facing the non-electrode positions.

[0244] When the heat exchange plate 2 is configured to cool the battery module 1 through the working medium, 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.

[0245] When the heat exchange plate 2 is configured to heat the battery module 1 through the 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 medium in the flow path 21 may be a coolant such as R123a and R32, or CO2 or water. For example, when the working medium is a coolant, the heat exchange plate 2 can be configured to cool the battery module 1 through a low-temperature and low-pressure cooling working medium. When this is the case, the working medium flows from the flow path 21 in the first type region 26 to the flow path 21 in the second type region 27. To ensure that the cooling working medium can be in a state with a balanced gas phase and liquid phase, thereby improving the heat exchange effect of the heat exchange plate 2 for the battery module 1 and ensuring the long-term stable operation of the battery structure, when the heat exchange plate 2 is configured to heat the battery module 1 through a high-temperature and high-pressure working medium, the working medium 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 on the heat exchange plate 2, and the battery module 1 may include a plurality of cells. The heat exchange plate 2 cools the battery module 1 in the forward direction (the flow direction of the working medium in the flow path 21) and heats the battery module in the reverse direction (the flow direction of the working medium in the flow path 21). This can improve the cooling operation and heating operation of the battery module 1, ensure the 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, and the positive electrode position and the negative electrode position are located on two opposite side portions of the battery module 1 far apart from each other.

[0249] Specifically, during the operation of the battery module 1, a large amount of heat is generated at the positive electrode position and the negative electrode position. That is, the heat exchange plate needs to provide a better cooling effect for the positive electrode position and the negative electrode position of the battery module. When the positive electrode position and the negative electrode position are located far apart from each other on two opposite 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 two opposite sides of the battery module 1 that are far apart from each other.

[0250] Optionally, referring to FIGS. 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 partition and the second partition that are far apart from each other to the flow paths 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 electrode position and the negative electrode position of the battery module 1 that generate more heat, and then cools other regions of the battery module 1 to ensure the temperature uniformity of the battery module 1.

[0252] When the heat exchange plate 2 is configured to heat the battery module 1 through the working medium, the working medium flows from the flow paths 21 of the second type region 27 to the flow paths 21 of the first partition and the second partition. In this case, the working medium may also be a high-temperature and high-pressure working medium. The high-temperature and high-pressure working medium first heats the regions of the battery module 1 that generate little heat except for the positive electrode position and the negative electrode position, and then heats the positive electrode position and the negative electrode position of the battery module 1 to ensure the temperature uniformity of the battery module 1.

[0253] Optionally, when the heat exchange plate 2 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 then from the flow path 21 of the second partition 262 to the flow path 21 of the second type region 27.

[0254] Specifically, all the working media flowing through the first partition 261 and the second partition 262 converge within 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 medium in the first partition 261 first flows through the second partition 262 and then returns to the second partition 262, and the working medium in the second partition 262 can flow directly into the flow path 21 of the second type region 27.

[0255] Optionally, in the direction of flow from the first type region 26 to the second type region 27, the number of flow paths 21 gradually increases.

[0256] Specifically, in the direction of flow from the first type region 26 to the second type region 27, the number of flow paths 21 may gradually increase. For example, the number of flow paths 21 increases through branches, thereby increasing the distribution density of the flow paths 21. After the flow paths 21 branch, the flow paths can also converge to facilitate the recovery of the working medium at the inlets and outlets of the flow paths 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 flow path section and the second flow path section can be connected through a flow branch point. In order to facilitate the control of the balance of the flow rates of the working media in the two second flow path sections, the flow branch point can evenly divide the working medium in the first flow path section into the two second flow path sections.

[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 flow paths in the third flow path section is twice the number of flow paths in the second flow path section.

[0260] Specifically, the second flow path section and the third flow path section can be connected through a flow branch point. To facilitate the control of the balance of the flow rate of the working medium in the two third flow path sections, the flow branch point can evenly divide the working medium in the second flow path section into the two third flow path sections.

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

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

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

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

[0265] Optionally, the electrode positions include a positive electrode position and a negative electrode position, and the positive electrode position and the negative electrode position 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 close to each other and jointly perform heat exchange for the positive electrode position and the negative electrode position 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 end portion 221 and a second end portion 222. The first end portion 221 and the second end portion 222 are respectively connected to two end portions of the flow path 21.

[0267] Specifically, the first end portion 221 and the second end portion 222 can be configured to connect the heat exchange plate 2 to an external component that provides a working medium. For example, in order to ensure the flow stability of the working medium in the heat exchange plate 2, an external pump can be connected to the heat exchange plate 2 through the first end portion 221 and the second end portion 222.

[0268] Optionally, the first end portion 221 is connected to the flow path 21 of the first type region 26, and the second end portion 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 a first flow convergence end and a 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 end portion 221 and the second end portion 222 by screws respectively. 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 branch 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. In order 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 a 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 protruding portion of the battery module 1 on the heat exchange plate 2.

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

[0278] Specifically, the two ends of the first - type flow path 25 are directly connected to the trunk of the flow path. The trunk of the flow path 21 is a part of the flow path directly connected to the first flow - convergence end and the second flow - convergence end, without being branched or converged. Therefore, in order to ensure the temperature balance of the flow path 21 during heat exchange, the arrangement of the first - type flow path 25 simplifies the flow path of the working medium in the first - type flow path 25 and can avoid excessive heating and cooling of the first flow - convergence end and the second flow - convergence end.

[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 - electrode position and the negative - electrode position of the battery module 1, and the third region may correspond to the non - electrode position in the middle of the battery module or the gap position between cells in the battery module. In order to increase the heat - exchange efficiency of the positive - electrode position and the negative - electrode position of the battery module 1 on the heat - exchange plate 2 and reduce the heat - exchange efficiency for the position of the battery module 1 corresponding to the third region, the following two embodiments may be implemented.

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

[0282] In another embodiment, the density of the flow path 21 in the second - type region 27 is higher than the density of the flow path 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 disposed on the flow path plate 24.

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

[0285] Although some specific embodiments of the present disclosure have been described in detail by way of example, those skilled in the art will understand that the above examples are merely illustrative and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments can be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is only subject 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 disposed around the battery region, and the battery region is a battery protruding region of the battery on the heat exchange plate, the heat exchange region and the battery region; a flow path (21), wherein the flow path (21) is disposed within the heat exchange plate, and the flow path is configured to enable 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, the flow path (21); The first type flow path (100) is located in the heat exchange region (203), and the second type flow path is distributed in the battery region (204), a heat exchange plate.

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 branchings of the first type flow path is less than the number of branchings of the second type flow path.

3. The heat exchange plate further includes a first terminal end (221) and a second terminal end (222), one end of the first type flow path is connected to the first terminal end (221), and the other end of the first type flow path is connected to the second terminal end, one end of the second type flow path is connected to the first terminal end (221), and the other end of the second type flow path is connected to the second terminal end (222), the heat exchange plate according to claim 1 or 2.

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

5. The heat exchange plate according to claim 3 or 4, wherein when the second type flow path extends from the first terminal end (221) to the second terminal end (222), it branches at least twice and branches at most six times.

6. The flow path includes a plurality of trunk portions, a plurality of stages of branch portions, and a plurality of stages of 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 stem includes a plurality of first stems (31) and second stems (41), the first stem (31) is connected to the first end portion (221), and the second stem (41) is connected to the second end portion (222). One of the first stems (31) passes through a first-stage flow branching / converging point (2121) to form two first-stage branch portions (101), and one first-stage branch portion (101) passes through a second-stage flow branching / converging point (2122) to form two second-stage branch portions (102), and extends into the heat exchange region (203), and the two second-stage branch portions (102) serve as the first-type flow path. One end of one of the two second-stage branch portions (102) away from the first stem (31) is connected to one of the second stems (41) through a flow branch, according to any one of claims 3 to 5. The heat exchange plate described.

7. Another first-stage branch portion (101) formed after one of the first stems (31) passes through the first-stage flow branching / converging point (2121) extends into the battery region (204), and the first-stage branch portion (101) and the branch portion formed after the first-stage branch portion passes through the flow branching / converging point are the second-type flow path, according to claim 6. The heat exchange plate described.

8. The second-stage branch portion (102) serving as the first-type flow path passes through the second-stage flow branching / converging point (2122) at a position close to the second stem (41) to form the first-stage branch portion (101), and the first-stage branch portion (101) and another first-stage branch portion (101) serving as the second-type flow path are connected to one of the second stems (41) through the first-stage flow branching / converging point (2121), and the first-stage flow branching / converging point (2121) and the second-stage flow branching / converging point (2122) are arranged adjacent to each other, according to claim 6. The heat exchange plate described.

9. At a position close to the second stem (41), the second-stage flow branching / converging point (2122) connected to the second-stage branch portion (102) serving as the first-type flow path, and the second-stage flow branching / converging point (2122) connected to the second-stage branch portion (102) serving as the second-type flow path are arranged adjacent to each other, according to claim 8. The heat exchange plate described.

10. It includes 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). The heat exchange plate according to any one of claims 1 to 9.

11. The first type region (26) includes a first partition (261) and a second partition (262). 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). The heat exchange plate according to claim 10.

12. The first partition (261) of the first type region (26) includes a second sub-region (2612), and the second partition (262) of the first type region (26) includes a second sub-zone (2622). The second type region includes a second partition region (272), and the second partition region (272) is located between the second sub-zone (2622) and the second sub-region (2612). The heat exchange plate according to claim 11.

13. The heat exchange plate has a first region and a second region, the flow path is distributed in the first region (28) and the second region (29), and the average distribution density of the flow path (21) in the first region (28) is greater than the average distribution density of the flow path (21) in the second region (29). The heat exchange plate according to any one of claims 1 to 12.

14. The heat exchange plate includes a flow path plate and a base plate, the flow path is arranged on the flow path plate, and in the plane where the heat exchange plate is located, the area for arranging the flow path is greater than 70% of the area of the flow path plate (24). The heat exchange plate according to any one of claims 1 to 13.

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

16. A battery pack, comprising: The heat exchange plate according to any one of claims 1 to 15; and A battery module, wherein the heat exchange plate covers the battery module, and the battery module is located at a position corresponding to the battery region.

17. The battery pack according to claim 16, wherein 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 region of the heat exchange plate surrounds the entire outer periphery of the first module and the second module.

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

Images