Heat exchange plate, battery pack, and vehicle

Abstract

Heat exchange plate, battery pack, and vehicle. The heat exchange plate includes a flow path, a first end portion, and a second end portion. The flow path is disposed within the heat exchange plate and is configured to allow a heat exchange working medium to flow through the flow path. One end portion of the flow path communicates with the first end portion, and the other end portion of the flow path communicates with the second end portion. The first end portion and the second end portion are configured to allow the heat exchange working medium to enter the heat exchange plate. The heat exchange plate includes a first type region configured to be disposed corresponding to a battery electrode region. The flow path includes a flow division point, and the flow division point includes a first-stage flow division point. At least one first-stage flow division point is disposed within the first type region and is disposed close to the first end portion or the second end portion. The flow division point divides the flow path.

Description

Technical Field

[0001] Cross - reference to Related Applications This disclosure claims priority to Chinese Patent Application No. 202210911342.3, entitled "HEAT EXCHANGE PLATE, BATTERY PACK, AND VEHICLE", filed on July 29, 2022, and Application No. 202222893863.9, entitled "HEAT EXCHANGE PLATE, INTEGRATED FLOW CHANNEL PLATE, BATTERY TRAY, BATTERY STRUCTURE, AND VEHICLE", filed on October 31, 2022. 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 a core power component in electric vehicles, the battery is essential for the long - term and stable operation of electric vehicles.

[0004] In existing technologies, water passes through a harmonica tube to cool or heat the battery. However, existing harmonica tubes are single tubes or multiple tubes arranged side by side, which reduces the flow - path distribution density of heat - exchange components such as harmonica tubes. When the heat - exchange component exchanges heat for the battery, the temperature of the battery is likely to become too high or too low, reducing the stability and service life of the battery.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present disclosure provides 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, a heat exchange plate applied to a battery is provided. The heat exchange plate includes:

[0007] a flow path disposed within the heat exchange plate and configured to allow a heat exchange working medium to flow therethrough; and

[0008] a first terminal end and a second terminal end, wherein one end of the flow path is connected to the first terminal end and the other end of the flow path is connected to the second terminal end, and the first terminal end and the second terminal end are configured to allow the heat exchange working medium to flow into the heat exchange plate.

[0009] The heat exchange plate includes a first type region disposed corresponding to the battery post region. The flow path includes a flow branch point, the flow branch point includes a first-stage flow branch point, at least one first-stage flow branch point is disposed within the first type region, the first-stage flow branch point is disposed close to the first terminal end or the second terminal end, and the flow branch point branches the flow path.

[0010] Optionally, 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 region.

[0011] The first type region of the first heat exchange module includes a third sub-region and a first sub-region, and the first type region of the second heat exchange module includes a fourth sub-region and a second sub-region.

[0012] The first-stage flow bifurcation point is arranged within the third sub-region, the flow bifurcation point further includes a second-stage flow bifurcation point, and the second-stage flow bifurcation point is located in at least one of the first sub-region, the third sub-region, and the fourth sub-region.

[0013] Optionally, the flow bifurcation point includes at least two first-stage flow bifurcation points, two second-stage flow bifurcation points corresponding to some of the first-stage flow bifurcation points are both located in the second sub-region, and two second-stage flow bifurcation points corresponding to another first-stage flow bifurcation point are respectively located in the first sub-region and the fourth sub-region.

[0014] Optionally, the flow path further includes a third-stage flow bifurcation point, and the third-stage flow bifurcation point is located in at least one of the first sub-region and the second sub-region.

[0015] Optionally, the flow bifurcation point further includes a fourth-stage flow bifurcation point, and the fourth-stage flow bifurcation point is arranged in at least one of the third sub-region and the second sub-region.

[0016] Optionally, when the heat exchange plate is configured to cool the battery, the working medium flows in from the first terminal end, flows through the first-stage flow bifurcation point, the second-stage flow bifurcation point, and the third-stage flow bifurcation point, and then flows out through the second terminal end.

[0017] Optionally, the flow path includes a trunk portion and branch portions, the trunk portion is connected to the first terminal end or the second terminal end, and the trunk portion connects the branch portions to the first terminal end and the second terminal end.

[0018] The branch portions include first-stage branch portions, second-stage branch portions, third-stage branch portions, and fourth-stage branch portions.

[0019] The first-stage flow bifurcation point is connected between the trunk portion and the first-stage branch portion.

[0020] The second-stage flow bifurcation point is connected between the first-stage branch portion and the second-stage branch portion.

[0021] The third-stage flow bifurcation point is connected between the second-stage branch portion and the third-stage branch portion.

[0022] The fourth-stage flow bifurcation point is connected between the third-stage branch portion and the fourth-stage branch portion.

[0023] Optionally, the flow path further includes a flow convergence point, and the flow convergence point includes a first-stage flow convergence point, a second-stage flow convergence point, a third-stage flow convergence point, and a fourth-stage flow convergence point.

[0024] Two ends of the fourth-stage branch portion are respectively connected to the fourth-stage flow bifurcation point and the fourth-stage flow convergence point.

[0025] The fourth-stage branch portion converges so as to form the third-stage branch portion through the fourth-stage flow convergence point to which the fourth-stage branch portion is connected.

[0026] The third-stage branch portion formed by the convergence converges so as to form the second-stage branch portion through the third-stage flow convergence point.

[0027] The second-stage branch portion formed by the convergence converges so as to form the first-stage branch portion through the second-stage flow convergence point.

[0028] The first-stage branch portion formed by the convergence converges so as to form the trunk portion through the first-stage flow convergence point.

[0029] The trunk portion is connected to the first terminal end, or the trunk portion is connected to the second terminal end.

[0030] Optionally, the heat exchange plate includes a first heat exchange module and a second heat exchange module, both the first heat exchange module and the second heat exchange module include a second-type region, and the second-type region is arranged corresponding to the non-post region of the battery.

[0031] The second type region of the first heat exchange module includes the first partition region, and the second type region of the second heat exchange module includes the second partition region.

[0032] At least one first-stage flow bifurcation point is close to the second end portion, is disposed within the third sub-region, the flow bifurcation point further includes a second-stage flow bifurcation point, and the second-stage flow bifurcation point is located within the third sub-region and the first partition region.

[0033] Optionally, the flow path further includes a third-stage flow bifurcation point, and the third-stage flow bifurcation point is located within the second partition region.

[0034] Optionally, the flow bifurcation point further includes a fourth-stage flow bifurcation point, and the fourth-stage flow bifurcation point is located within the second partition region.

[0035] Optionally, when the heat exchange plate is configured to heat the battery, the working medium flows in from the second end portion, flows through the first-stage flow bifurcation point, the second-stage flow bifurcation point, and the third-stage flow bifurcation point, and then flows out through the first end portion.

[0036] Optionally, a part of the second-stage branch portion is distributed at the edges of the first heat exchange module and the second heat exchange module.

[0037] Optionally, the flow path branches at the Nth stage within the first heat exchange module and branches at the Mth stage within the second heat exchange module, where M ≤ N.

[0038] Optionally, the flow path forms n1 branch portions after branching at the Nth stage within the first heat exchange module and forms m1 branch portions after branching at the Mth stage within the second heat exchange module, where m1 > n1.

[0039] Optionally, the heat exchange plate further includes a second type region. The flow paths are distributed in the first type region and the second type region. The heat exchange plate is configured to cool the battery, and the working medium flows from the flow paths in the first type region to the flow paths in the second type region (27). Alternatively, 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.

[0040] 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.

[0041] 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.

[0042] 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 within 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.

[0043] According to a second aspect of the embodiments of the present disclosure, a battery pack including the heat exchange plate according to the first aspect is provided.

[0044] 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

[0045] including the battery pack according to the second aspect is provided.

[0046] The technical effects of the present disclosure are as follows.

[0047] Embodiments of the present disclosure provide a heat exchange plate. The heat exchange plate includes a flow path disposed within the heat exchange plate, the flow path being configured to allow a heat exchange working medium to flow therethrough, a first end portion and a second end portion, one end of the flow path being connected to the first end portion and the other end of the flow path being connected to the second end portion, and the heat exchange plate includes a first type region. The first stage flow branch point of the heat exchange plate of the present disclosure is disposed close to the first end portion or the second end portion. The first type region is a region corresponding to a post region where a battery core generates high heat in a battery, the first stage flow branch point is disposed within the first type region and close to the first end portion or the second end portion. Thus, this facilitates controlling the flow distribution of the working medium and improving the temperature uniformity of the heat exchange plate.

[0048] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0049] The accompanying drawings are incorporated herein and constitute a part hereof, showing embodiments of the present disclosure and used in conjunction with the description to explain the principles of the present disclosure.

Brief Description of the Drawings

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Mode for Carrying Out the Invention

[0051] Various exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Note 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.

[0052] 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.

[0053] Technologies, methods, and devices known to those skilled in the relevant art may not be discussed in detail herein, but where appropriate, those technologies, methods, and devices are considered to be part of this specification.

[0054] In all examples shown and discussed in this specification, any specific values are merely illustrative and should not be construed as limitations. Therefore, other examples of exemplary embodiments can have different values.

[0055] Note 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 need not be further discussed in subsequent accompanying drawings.

[0056] Referring to FIGS. 1 to 5, an embodiment of the present disclosure provides a heat exchange plate 2. The heat exchange plate 2 includes a flow path 21, which is arranged in the heat exchange plate 2 and is configured to allow a heat exchange working medium to flow through the flow path 21, and a first terminal end 221 and a second terminal end 222, one end of the flow path 21 is connected to the first terminal end 221, the other end of the flow path 21 is connected to the second terminal end 222, and the first terminal end 221 and the second terminal end 222 are configured to allow the heat exchange working medium to flow into the heat exchange plate.

[0057] The heat exchange plate 2 includes a first type region 26, and the first type region 26 is arranged corresponding to the battery post region. The flow path 21 includes a flow branch point 2120, the flow branch point 2120 includes a first-stage flow branch point 21210, at least one first-stage flow branch point 21210 is arranged within the first type region 26, the first-stage flow branch point 21210 is arranged close to the first terminal end 221 or the second terminal end 222, and the flow branch point 2120 branches the flow path 21.

[0058] Specifically, the first type region 26 may correspond to the region where the battery core generates high heat in the battery. Since the battery core needs to provide a post for electrical connection, the heat generated in the post region of the battery core during operation is relatively high temperature, thus forming the battery post region. In order to improve the heat exchange efficiency of the heat exchange plate 2, the first type region 26 can be arranged corresponding to its battery post region, and the regions on the heat exchange plate 2 other than the first type region 26 can be arranged corresponding to the non-post regions of the main body of the battery core on the battery.

[0059] Specifically, the number of flow paths 21 at the two ends of the flow branch point 2120 is different. The flow paths 21 at the two ends of the flow branch point 2120 can each be used as the inlet and outlet of the working medium. In the case of different heat exchanges of the heat exchange plate 2, the flow path inlets and outlets at the two ends of the flow branch point 2120 can be switched with each other, whereby the working medium can flow forward or backward at the flow branch point 2120.

[0060] In one embodiment, from the first terminal end 221 to the second terminal end 222, the flow path 21 has at least two flow branch points 2120. One of the flow branch points 2120 is close to the first terminal end 221 and branches the flow path 21, and another flow branch point 2120 is close to the second terminal end and converges the flow path 21.

[0061] Specifically, the two ends of the flow path 21 are either blocked or are respectively connected to the first end portion 221 and the second end portion 222 by screws. The flow path 21 of the heat exchange plate 2 branches at least once and converges at least once, and then extends from the first end portion 221 to the second end portion 222. In order to form one or more flow branch points 2120 on the flow path 21, the above-mentioned flow branch may be to branch one flow path 21 into two, to branch one flow path into three, or to branch one flow path into more than that. The flow convergence may be to converge two flow paths 21 into one, to converge three flow paths into one, or to converge more flow paths into one.

[0062] In the present disclosure, the flow path 21 includes a flow branch point 2120, the flow branch point 2120 includes a first-stage flow branch point 21210, at least one first-stage flow branch point 21210 is arranged in the first-type region 26, the first-stage flow branch point 21210 is arranged close to the first end portion 221 or the second end portion 222, and the flow branch point 2120 branches the flow path 21. The first-type region 26 is a region corresponding to the post region where the battery core generates high heat in the battery, the first-stage flow branch point 21210 is arranged in the first-type region 26 and is close to the first end portion 221 or the second end portion 222. Therefore, this facilitates the control of the flow distribution of the working medium and improves the temperature uniformity of the heat exchange plate 2. In this way, the first-stage flow branch point 21210 can change the number of the flow paths 21 in order to increase the distribution density of the flow paths 21 in the first-type region 26, thereby improving the heat exchange effect of the heat exchange plate 2.

[0063] Optionally, the heat exchange plate 2 includes a first heat exchange module 201 and a second heat exchange module 202, and both the first heat exchange module 201 and the second heat exchange module 202 include the first-type region 26.

[0064] The first type region 26 of the first heat exchange module 201 includes a third sub-region 2621 and a first sub-region 2611, and the first type region 26 of the second heat exchange module 202 includes a fourth sub-region 2622 and a second sub-region 2612.

[0065] The first stage flow bifurcation point 21210 is disposed within the third sub-region 2621, the flow bifurcation point 2120 further includes a second stage flow bifurcation point 21220, and the second stage flow bifurcation point 21220 is located in at least one of the first sub-region 2611, the third sub-region 2621, and the fourth sub-region 2622.

[0066] 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 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 201 and a second heat exchange module 202. The first heat exchange module 201 corresponds to a group of battery cores, and the second heat exchange module 202 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 201 and the second heat exchange module 202, whereby the area for arranging the flow path 21 in the first heat exchange module 201 and the second heat exchange module 202 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.

[0067] Specifically, the first heat exchange module 201 may be in the left region of FIG. 1, and the second heat exchange module 202 may be in the right region of FIG. 1. The first type region 26 of the first heat exchange module 201 includes a third sub-region 2621 and a first sub-region 2611, and the first type region 26 of the second heat exchange module 202 includes a fourth sub-region 2622 and a second sub-region 2612. The first end portion 221 and the second end portion 222 may be disposed close to the third sub-region 2621. The first-stage flow branch point 21210 is a flow branch point close to the first end portion 221 and the second end portion 222 in the flow path 21, whereby the first-stage flow branch point 21210 is disposed within the third sub-region 2621.

[0068] Optionally, when the heat exchange plate 2 is configured to cool the battery, the flow branch point 2120 further includes a second-stage flow branch point 21220. The second-stage flow branch point 21220 is located at the end of the first-stage flow branch point 21210 away from the first end portion 221 and the second end portion 222, that is, the second-stage flow branch point 21220 is located in at least one of the first sub-region 2611, the third sub-region 2621, and the fourth sub-region 2622. Further, after the flow path 21 extending from the first end portion 221 and the second end portion 222 is branched by the first-stage flow branch point 21210, in order to further improve the distribution density of the flow path 21 in the heat exchange plate 2, the flow path can subsequently be branched by the second-stage flow branch point 21220, thereby improving the heat exchange effect of the heat exchange plate 2.

[0069] In addition, the first type region 26 may include a first partition 261 and a 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 third sub-region 2621 and the fourth sub-region 2622.

[0070] Optionally, the flow bifurcation point 2120 includes at least two first-stage flow bifurcation points 21210, and two second-stage flow bifurcation points 21220 corresponding to some of the first-stage flow bifurcation points 21210 are both located in the second sub-region 2612, and two second-stage flow bifurcation points 21220 corresponding to another first-stage flow bifurcation point 21210 are located in the first sub-region 2611 and the fourth sub-region 2622, respectively.

[0071] Specifically, when the heat exchange plate 2 is configured to cool the battery, in the first type region 26, the second sub-region 2612 can be a high heat exchange region on the heat exchange plate 2 away from the third sub-region 2621, and the first sub-region 2611 and the fourth sub-region 2622 can be high heat exchange regions between the second sub-region 2612 and the third sub-region 2621. To ensure the distribution density of the flow paths 21 in the second sub-region 2612, the first sub-region 2611, and the fourth sub-region 2622, respectively, a part of the second-stage flow bifurcation points 21220 located in the second sub-region 2612 can be used to increase the density of the flow paths 21 in the second sub-region 2612, and another part of the second-stage flow bifurcation points 21220 located in the first sub-region 2611 and the fourth sub-region 2622 can be used to increase the density of the flow paths 21 in the first sub-region 2611 and the fourth sub-region 2622, respectively, to ensure the efficiency of heat exchange between the high heat exchange region on the heat exchange plate 2 and the battery.

[0072] Optionally, the flow path 21 further includes a third-stage flow bifurcation point, and the third-stage flow bifurcation point is located in at least one of the first sub-region 2611 and the second sub-region 2612.

[0073] Specifically, when the heat exchange plate 2 is configured to cool the battery, in order to ensure the heat exchange effects of the first sub-region 2611 and the second sub-region 2612, since the first sub-region 2611 and the second sub-region 2612 are away from the third sub-region 2621 where the first terminal end 221 and the second terminal end 222 are arranged, after the second-stage flow branch point 21220 in the first sub-region 2611 branches the flow path 21, the third-stage flow branch point connected to the second-stage flow branch point 21220 can continuously branch the flow path in the first sub-region 2611. Similarly, in order to increase the density of the flow path 21 in the first sub-region 2611 and the second sub-region 2612, after the second-stage flow branch point 21220 in the second sub-region 2612 branches the flow path 21, the third-stage flow branch point connected to the second-stage flow branch point 21220 can continuously branch the flow path in the second sub-region 2612.

[0074] Optionally, the flow branch point 2120 further includes a fourth-stage flow branch point, and the fourth-stage flow branch point is arranged in at least one of the third sub-region 2621 and the second sub-region 2612. For example, the third sub-region 2621 is close to the first terminal end 221 and the second terminal end 222, that is, the third sub-region 2621 includes a small number of flow paths 21 obtained through the branch by the first-stage flow branch point 21210. Therefore, in order to ensure the heat exchange effect of the third sub-region 2621, the fourth-stage flow branch point can be arranged in the third sub-region 2621 to increase the density of the flow path 21 in the third sub-region 2621. The second sub-region 2612 is away from the first terminal end 221 and the second terminal end 222, that is, the second sub-region 2612 is the end of the heat exchange plate 2 away from the first terminal end 221 and the second terminal end 222. Therefore, in order to ensure the heat exchange effect of the second sub-region 2612, the fourth-stage flow branch point can be arranged in the second sub-region 2612 to increase the density of the flow path 21 in the second sub-region 2612.

[0075] Optionally, when the heat exchange plate 2 is configured to cool the battery, the working medium flows in from the first terminal end 221, flows through the first-stage flow branch point 21210, the second-stage flow branch point 21220, and the third-stage flow branch point, and then flows out through the second terminal end 222.

[0076] Specifically, when the heat exchange plate 2 is configured to cool the battery, after the working medium flows in from the first terminal end 221, the working medium is first branched by the first-stage flow branch point 21210, and first increases the number of flow paths 21 through the first-stage flow branch point 21210. The second-stage flow branch point 21220 is connected to the first-stage flow branch point 21210 through the flow path 21. Therefore, the working medium can increase the number of flow paths 21 through the second-stage flow branch point 21220. The third-stage flow branch point is connected to the second-stage flow branch point 21220 through the flow path 21. Therefore, in order to ensure the density of the flow paths 21 in the heat exchange plate 2, the working medium can increase the number of flow paths 21 through the third-stage flow branch point. Finally, in order to ensure the heat exchange efficiency of the heat exchange plate 2, the working medium flows out through the second terminal end 222 after one or more flow convergences to form a circulation of the flow paths 21 in the heat exchange plate 2.

[0077] Optionally, the flow path 21 includes a trunk portion and a branch portion, the trunk portion is connected to the first terminal end 221 or the second terminal end 222, and the trunk portion connects the branch portion to the first terminal end 221 and the second terminal end 222.

[0078] Specifically, the trunk portion of the flow path 21 can be a part of the flow path 21 that is directly connected to the first terminal end 221 and the second terminal end 222 and is not branched or converged. On the other hand, the branch portion can be a part of the flow path 21 that is connected to the trunk portion after branching from the trunk portion or converging to the trunk portion. Thereby, in order to ensure the distribution density of the flow paths 21 on the heat exchange plate 2, the number of branch portions is greater than the number of trunk portions.

[0079] The number of the stems is at least 4, the first terminal end 221 is connected to at least two stems, and the second terminal end 222 is connected to at least two stems.

[0080] In addition, in one embodiment, the stems connected to the first terminal end 221 and the stems connected to the second terminal end 222 are oppositely arranged on the edge of the first heat exchange module 201.

[0081] In another embodiment, the stems connected to the first terminal end 221 and the stems connected to the second terminal end 222 are arranged in parallel on the edge of the first heat exchange module 201.

[0082] Specifically, in order to increase the number of the flow paths 21 and the distribution density of the flow paths in the heat exchange plate 2 and improve the heat exchange effect of the heat exchange plate 2, in the process of the flow path 21 extending from the first terminal end 221 to the second terminal end 222, or the flow path 21 extending from the second terminal end 222 to the first terminal end 221, the flow path 21 can first be branched by the flow branch point 2120.

[0083] Optionally, the flow branch point 2120 includes a first-stage flow branch point 21210, and the branch includes a first-stage branch. The first-stage flow branch point 21210 is connected between the stem and the first-stage branch.

[0084] Specifically, the first-stage flow branch point 21210 functions as a branch or convergence structure between the stem and the first-stage branch, and can evenly branch the working medium in the stem into two or more first-stage branches, so that in order to ensure the distribution density of the flow paths 21 and the flexibility of heat exchange adjustment in the heat exchange plate 2, the working medium is dispersed as early as possible in the heat exchange plate 2.

[0085] Optionally, at least two first-stage branch portions are arranged. That is, in order to ensure the distribution density of the flow path 21 in the heat exchange plate 2, the first-stage flow branch point 21210 can evenly branch the working medium in the trunk portion into two, three, or more first-stage branch portions.

[0086] In a specific embodiment, one end of the first-stage flow branch point 21210 is connected to one of the trunk portions, and the other end of the first-stage flow branch point 21210 is connected to two of the first-stage branch portions. That is, the first-stage flow branch point 21210 can evenly branch the working medium in the trunk portion into two first-stage branch portions, thereby controlling the balance of the flow of the working medium in the two first-stage branch portions and ensuring an even flow of the working medium in the two first-stage branch portions.

[0087] Optionally, the flow branch point 2120 further includes a second-stage flow branch point 21220, and the branch portion includes a second-stage branch portion. The second-stage flow branch point 21220 is connected between the first-stage branch portion and the second-stage branch portion.

[0088] Specifically, the second-stage flow branch point 21220 functions as a branching or converging 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 2 and the flexibility of heat exchange adjustment, the working medium is dispersed in the heat exchange plate 2.

[0089] 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 2, the second-stage flow branch point 21220 can evenly branch the working medium in the first-stage branch portion into two, three, or more second-stage branch portions.

[0090] In a specific embodiment, one end of the second-stage flow bifurcation point 21220 is connected to one of the first-stage branch parts, and the other end of the second-stage flow bifurcation point 21220 is connected to two of the second-stage branch parts. That is, in order to control the balance of the flow of the working medium in the two second-stage branch parts, the second-stage flow bifurcation point 21220 can evenly branch the working medium in the first-stage branch part into the two second-stage branch parts.

[0091] Optionally, the number of the first-stage flow bifurcation points 21210 is less than the number of the second-stage flow bifurcation points 21220.

[0092] Specifically, when the first-stage flow bifurcation point 21210 is connected between the trunk part and the first-stage branch part, the working medium in the trunk part can be evenly branched into two or more first-stage branch parts. That is, the number of the first-stage branch parts needs to be greater than the number of the trunk parts, and one trunk part can correspond to one first-stage flow bifurcation point 21210. In order to further increase the number and distribution density of the flow paths 21, one first-stage branch part can be branched into a plurality of second-stage branch parts through the second-stage flow bifurcation point 21220. That is, one first-stage branch part can be provided corresponding to one second-stage flow bifurcation point 21220. Based on the fact that the number of the first-stage branch parts needs to be greater than the number of the trunk parts, the number of the second-stage flow bifurcation points 21220 is greater than the number of the first-stage flow bifurcation points 21210, which improves the heat exchange efficiency of the heat exchange plate 2.

[0093] Optionally, the flow bifurcation point 2120 further includes a third-stage flow bifurcation point, the branch part includes a third-stage branch part, and the third-stage flow bifurcation point is connected between the second-stage branch part and the third-stage branch part.

[0094] Specifically, the third-stage flow bifurcation point functions as a branching or converging structure between the second-stage branch part and the third-stage branch part, and can evenly branch the working medium in the second-stage branch part into two or more third-stage branch parts, so that in order to ensure the distribution density of the flow paths 21 and the flexibility of heat exchange adjustment in the heat exchange plate 2, the working medium is dispersed in the heat exchange plate 2.

[0095] Optionally, at least two third-stage branch portions are arranged. That is, in order to ensure the distribution density of the flow paths 21 in the heat exchange plate 2, the third-stage flow branch point can evenly branch the working medium in the second-stage branch portion into two, three, or more third-stage branch portions.

[0096] Similarly, the number of second-stage flow branch points 21220 is less than the number of third-stage flow branch points. Based on the requirement that the number of second-stage branch portions needs to be larger than the number of first-stage branch portions, the number of third-stage flow branch points is larger than the number of second-stage flow branch points 21220, which improves the heat exchange efficiency of the heat exchange plate 2.

[0097] Optionally, the flow branch point 2120 further includes a fourth-stage flow branch point, and the branch portion includes a fourth-stage branch portion. The fourth-stage flow branch point is connected between the third-stage branch portion and the fourth-stage branch portion.

[0098] Specifically, the fourth-stage flow branch point functions as a branching or converging structure between the third-stage branch portion and the fourth-stage branch portion, and can evenly branch the working medium in the third-stage branch portion into two or more fourth-stage branch portions. Thereby, in order to ensure the distribution density of the flow paths 21 and the flexibility of heat exchange adjustment in the heat exchange plate 2, the working medium is dispersed in the heat exchange plate 2.

[0099] Optionally, at least two fourth-stage branch portions are arranged. That is, in order to ensure the distribution density of the flow paths 21 in the heat exchange plate 2, the fourth-stage flow branch point can evenly branch the working medium in the third-stage branch portion into two, three, or more fourth-stage branch portions.

[0100] Optionally, the flow path 21 further includes a flow convergence point, and the flow convergence point includes a first-stage flow convergence point, a second-stage flow convergence point, a third-stage flow convergence point, and a fourth-stage flow convergence point.

[0101] Two ends of the fourth-stage branch portion are respectively connected to the fourth-stage flow branch point and the fourth-stage flow convergence point.

[0102] It converges so as to form the third-stage branch portion through the fourth-stage flow convergence point to which the fourth-stage branch portion is connected.

[0103] The third-stage branch portion formed by the convergence converges so as to form the second-stage branch portion through the third-stage flow convergence point.

[0104] The second-stage branch portion formed by the convergence converges so as to form the first-stage branch portion through the second-stage flow convergence point.

[0105] The first-stage branch portion formed by the convergence converges so as to form the trunk portion through the first-stage flow convergence point.

[0106] The trunk portion is connected to the first terminal end 221, or the trunk portion is connected to the second terminal end 222.

[0107] Specifically, in the process of the flow path 21 extending from the heat exchange plate 2, in order to avoid an excessive number of flow paths 21 extending and causing dispersion of the working medium flowing through the flow path 21, the flow path 21 can be converged by the flow convergence point, whereby, in order to ensure a well-balanced distribution of the flow paths 21 of the heat exchange plate 2, the number of flow paths 21 at the start end and the end end of the flow path 21 becomes smaller, and the number of intermediate flow paths 21 mainly used for heat exchange becomes larger.

[0108] Optionally, the heat exchange plate 2 includes a first heat exchange module 201 and a second heat exchange module 202, both the first heat exchange module 201 and the second heat exchange module 202 include a second type region 27, and the second type region 27 is arranged corresponding to the non-post region of the battery.

[0109] The second type region 27 of the first heat exchange module 201 includes a first partition region 271, and the second type region 27 of the second heat exchange module 202 includes a second partition region 272.

[0110] At least one first-stage flow bifurcation point 21210 is close to the second terminal end 222 and is arranged within the third sub-region 2621. The flow bifurcation point 2120 further includes a second-stage flow bifurcation point 21220, and the second-stage flow bifurcation point 21220 is located within the third sub-region 2621 and the first partition region 271.

[0111] Specifically, when the heat exchange plate 2 is configured to heat the battery, the first-type region 26 can correspond to a region where the battery core temperature is relatively low in the battery, and the second-type region 27 can correspond to a region where the battery core temperature is lower in the battery. Since the battery core needs to provide a post for electrical connection, the heat generated in the post region of the battery core during operation is relatively high, thus forming the battery post region. The region of the main body of the battery core generates relatively little heat, thus forming the non-post region of the battery. To improve the heat exchange efficiency of the heat exchange plate 2, the first-type region 26 can be arranged corresponding to the battery post region, and the second-type region 27 can be arranged corresponding to the non-post region of the main body of the battery core on the battery.

[0112] In one embodiment, the first terminal end 221 and the second terminal end 222 may be arranged close to the first partition region 271. When the first-stage flow bifurcation point 21210 is located in the third sub-region 2621, the second-stage flow bifurcation point 21220 is located at one end of the first-stage flow bifurcation point 21210 away from the first terminal end 221 and the second terminal end 222, that is, the second-stage flow bifurcation point 21220 is located within the third sub-region 2621 and the first partition region 271, which can further improve the distribution density of the flow path 21 in the heat exchange plate 2 and improve the heat exchange effect of the heat exchange plate 2.

[0113] Optionally, the flow path 21 further includes a third-stage flow bifurcation point, and the third-stage flow bifurcation point is located within the second partition region 272.

[0114] Specifically, the third-stage flow branch point functions as a branching or converging structure between the second-stage branch portion and the third-stage branch portion, and the working medium in the second-stage branch portion can be evenly branched into two or more third-stage branch portions, whereby, in order to ensure the distribution density of the flow path 21 in the heat exchange plate 2 and the flexibility of heat exchange adjustment, the working medium is dispersed in the second partition region 272 of the heat exchange plate 2.

[0115] Optionally, the flow branch point 2120 further includes a fourth-stage flow branch point, and the fourth-stage flow branch point is located within the second partition region 272.

[0116] Specifically, the fourth-stage flow branch point is connected between the third-stage branch portion and the fourth-stage branch portion, and the working medium in the third-stage branch portion can be evenly branched into two or more fourth-stage branch portions, whereby, in order to disperse the working medium in the second partition region 272 of the heat exchange plate 2 and increase the distribution density of the flow path 21 in the heat exchange plate 2, the number of the fourth-stage branch portions is larger than the number of the third-stage branch portions.

[0117] Optionally, when the heat exchange plate 2 is configured to heat a battery, the working medium flows in from the second terminal portion 222, flows through the first-stage flow branch point 21210, the second-stage flow branch point 21220, and the third-stage flow branch point, and then flows out through the first terminal portion 221.

[0118] Specifically, when the heat exchange plate 2 is configured to heat the battery, after the working medium flows in from the second terminal end 222, the working medium is first branched by the first-stage flow branch point 21210, and the number of flow paths 21 is first increased through the first-stage flow branch point 21210. The second-stage flow branch point 21220 is connected to the first-stage flow branch point 21210 through the flow path 21. Therefore, the working medium can increase the number of flow paths 21 through the second-stage flow branch point 21220. The third-stage flow branch point is connected to the second-stage flow branch point 21220 through the flow path 21. Therefore, in order to ensure the density of the flow paths 21 in the heat exchange plate 2, the working medium can increase the number of flow paths 21 through the third-stage flow branch point. Finally, in order to ensure the heat exchange efficiency of the heat exchange plate 2 for heat exchange, the working medium flows out through the first terminal end 221 after one or more flow convergences to form a circulation of the flow paths 21 in the heat exchange plate 2 for heat exchange.

[0119] Optionally, the heat exchange plate 2 includes a first heat exchange module 201 and a second heat exchange module 202.

[0120] A part of the first-stage branch portion, a part of the second-stage branch portion, a part of the third-stage branch portion, and a part of the fourth-stage branch portion are distributed in the first heat exchange module 201.

[0121] A part of the second-stage branch portion, a part of the third-stage branch portion, and a part of the fourth-stage branch portion are distributed in the second heat exchange module 202.

[0122] Specifically, when the first terminal end 221 and the second terminal end 222 are arranged on the side of the first heat exchange module 201 away from the second heat exchange module 202, in order to ensure the heat exchange effect of the second heat exchange module 202 for the battery, the number of second-stage branch portions in the second heat exchange module 202 is larger than the number of second-stage branch portions in the first heat exchange module 201.

[0123] Optionally, the number of fourth-stage branch portions is larger than the number of third-stage branch portions.

[0124] Specifically, the fourth-stage flow branch point is connected between the third-stage branch portion and the fourth-stage branch portion, and the working medium in the third-stage branch portion can be evenly branched into two or more fourth-stage branch portions. As a result, in order to disperse the working medium in the heat exchange plate 2, the number of fourth-stage branch portions is larger than the number of third-stage branch portions.

[0125] Optionally, the first terminal end 221 and the second terminal end 222 are located on the same side portion of the heat exchange plate 2.

[0126] Specifically, the shape of the heat exchange plate 2 can match the shape structure of the battery (which may refer to the shape of the large surface of the battery). For example, when exchanging heat for a square battery, the heat exchange plate 2 can be set to a square. When exchanging heat for a rhombic battery, in order to ensure the desired heat exchange after the heat exchange plate 2 and the battery come into contact with each other, the heat exchange plate 2 can be set to a rhombus. When the first terminal end 221 and the second terminal end 222 are located on the same side portion of the heat exchange plate 2, regardless of whether the working medium enters the heat exchange plate 2 from the first terminal end 221 or from the second terminal end 222, the working medium can flow to the other side portion of the heat exchange plate 2 (different from the side portion where the first terminal end 221 and the second terminal end 222 are arranged) and the intermediate region of the heat exchange plate 2. This facilitates the circulating flow of the working medium in the heat exchange plate 2 and improves the heat exchange amount of the heat exchange plate 2 for the battery.

[0127] In a specific embodiment, the heat exchange plate 2 is rectangular and matches the rectangular battery. The first terminal portion 221 and the second terminal portion 222 are located on the short side portion of the heat exchange plate 2 and are close to each other. When the working medium enters the heat exchange plate 2 from the first terminal portion 221 or the second terminal portion 222, the working medium can flow through the two long side portions, the other short side portion, and the intermediate region of the heat exchange plate 2, and finally, it can flow out of the heat exchange plate 2 from the second terminal portion 222 or the first terminal portion 221, forming a circulating flow of the working medium in the heat exchange plate 2.

[0128] Optionally, the flow bifurcation point 2120 is arranged on the side portion of the heat exchange plate close to the first terminal portion 221 and the second terminal portion 222.

[0129] Specifically, the first terminal portion 221 and the second terminal portion 222 may be the inlet and outlet of the working medium in the heat exchange plate 2, so that the working medium can enter and exit from the first terminal portion 221 and the second terminal portion 222 and be branched and converged as soon as possible. The flow bifurcation point 2120 can be arranged on the side portion of the heat exchange plate 2 close to the first terminal portion 221 and the second terminal portion 222, which not only ensures the concentration of the working medium at the first terminal portion 221 and the second terminal portion 222, but also can increase the number of flow paths 21 in the heat exchange plate 2 at that time, improving the heat exchange efficiency of the heat exchange plate 2.

[0130] Optionally, a part of the second-stage branch portion is distributed on the edge of the heat exchange plate 2.

[0131] Specifically, when the trunk portion located on the edge of the heat exchange plate 2 is branched into a plurality of first-stage branch portions by the first-stage flow branch point 21210, since the periphery of the edge of the heat exchange plate 2 is relatively large, the first-stage branch portions can be preferentially distributed on the edge of the heat exchange plate 2. When the first-stage branch portions are branched into a plurality of second-stage branch portions by the second-stage flow branch point 21220, in order to densely arrange the flow paths 21 on the edge of the heat exchange plate 2, some of the second-stage branch portions can be distributed on the edge of the heat exchange plate 2. In addition, in order to ensure a balanced arrangement of the flow paths 21 on the heat exchange plate 2, the remaining second-stage branch portions can also extend into the middle portion of the heat exchange plate 2.

[0132] Optionally, some of the second-stage branch portions are distributed on the edge of the heat exchange plate 2, and some of the third-stage branch portions are distributed in the middle portion of the heat exchange plate 2.

[0133] Specifically, when the second-stage branch portions are branched into a plurality of third-stage branch portions by the third-stage flow branch point, in order to densely arrange the flow paths 21 on the edge of the heat exchange plate 2, some of the second-stage branch portions can be distributed on the edge of the heat exchange plate 2. In order to ensure that as many flow paths 21 as possible are distributed on the heat exchange plate 2, some of the third-stage branch portions can extend into the middle portion of the heat exchange plate 2 after branching from the second-stage branch portions.

[0134] Optionally, the heat exchange plate 2 includes a first heat exchange module 201 and a second heat exchange module 202, and some of the second-stage branch portions are distributed on the edges of the first heat exchange module 201 and the second heat exchange module 202.

[0135] Specifically, the first heat exchange module 201 and the second heat exchange module 202 can be arranged adjacent to each other, and both the first terminal end 221 and the second terminal end 222 can be located on the side of the first heat exchange module 201 away from the second heat exchange module 202. When the second-stage branch portion extends from the first heat exchange module 201 to the second heat exchange module 202, in order to ensure the heat exchange effect on the edge of the heat exchange plate 2, some of the second-stage branch portions can be maintained along the edges of the first heat exchange module 201 and the second heat exchange module 202.

[0136] Optionally, the heat exchange plate 2 includes the first heat exchange module 201 and the second heat exchange module 202. The flow path 21 branches at the Nth stage in the first heat exchange module 201 and branches at the Mth stage in the second heat exchange module 202, where M ≤ N.

[0137] In one embodiment, when the first terminal end 221 and the second terminal end 222 are arranged on the side of the first heat exchange module 201 away from the second heat exchange module 202, a part of the first-stage branch portion, a part of the second-stage branch portion, a part of the third-stage branch portion, and a part of the fourth-stage branch portion are distributed in the first heat exchange module 201, that is, the flow path 21 branches at the fourth stage in the first heat exchange module 201, where N is 4. A part of the second-stage branch portion, a part of the third-stage branch portion, and a part of the fourth-stage branch portion are distributed in the second heat exchange module 202 (a part of the first-stage branch portion flows from the interface through the first heat exchange module to the second heat exchange module), whereby the flow path 21 branches at the fourth stage in the second heat exchange module 202, where M is 4 and M is equal to N.

[0138] In another embodiment, a part of the first-stage branch portion, a part of the second-stage branch portion, a part of the third-stage branch portion, and a part of the fourth-stage branch portion are distributed in the first heat exchange module 201, that is, the flow path branches at the fourth stage in the first heat exchange module 201, where N is 4. A part of the second-stage branch portion and a part of the third-stage branch portion are distributed in the second heat exchange module 202 (a part of the first-stage branch portion flows from the interface through the first heat exchange module to the second heat exchange module), whereby the flow path 21 branches at the third stage in the second heat exchange module 202, where M is 3 and M is smaller than N.

[0139] Optionally, the flow path 21 forms n1 branch portions after branching at the Nth stage in the first heat exchange module 201 and forms m1 branch portions after branching at the Mth stage in the second heat exchange module 202, where m1 > n1.

[0140] Specifically, in the flow path 21 that branches in the first heat exchange module 201, a part of the first-stage branch portion, a part of the second-stage branch portion, a part of the third-stage branch portion, and the fourth-stage branch portion are distributed in the first heat exchange module 201, that is, after the flow path 21 branches at the fourth stage in the first heat exchange module 201, eight branch portions are formed, where n1 is 8 (the first branch is that the trunk branches into one first-stage branch portion).

[0141] In the second heat exchange module 202, the flow path 21 that branches can include a first type flow path and a second type flow path. In the first type flow path, a part of the second stage branch portion, a part of the third stage branch portion, and the fourth stage branch portion are distributed in the second heat exchange module 202 (a part of the first stage branch portion flows from the interface through the first heat exchange module 201 to the second heat exchange module 202), whereby after the flow path branches at the fourth stage in the second heat exchange module 202, eight branch portions are formed (the first branch branches into one first stage branch portion). In the second type flow path, a part of the second stage branch portion and a part of the third stage branch portion are distributed in the second heat exchange module 202 (a part of the first stage branch portion flows from the interface through the first heat exchange module 201 to the second heat exchange module 202), whereby the flow path 21 branches at the third stage in the second heat exchange module 202, and eight branch portions are formed, that is, after the flow path 21 branches in the second heat exchange module 202, 16 branch portions are formed, where m1 is 16, so M1>n1, and m1 is optionally twice n1.

[0142] An embodiment of the present disclosure further provides a battery pack. This battery pack includes a heat exchange plate 2.

[0143] Specifically, referring to FIG. 6, the battery pack includes a heat exchange plate 2 and a plurality of battery modules 1. Posts are provided at two ends of each battery module 1. The plurality of battery modules 1 are arranged along a first direction, and for increasing the energy density of the battery pack, the first direction may be the X direction in FIG. 1. The heat exchange plate 2 is arranged on one or two side portions of the battery module 1 along a second direction. The second direction may be the Z direction in FIG. 1. The side surfaces of the plurality of battery modules 1 along the second direction form a large surface of the battery module 1. The heat exchange plate 2 is arranged close to one or two large surfaces of the battery module 1, which can ensure the heat exchange effect of the heat exchange plate 2 for the battery module 1.

[0144] In addition, the plurality of battery modules 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 flow branching component 22, and the first terminal end 221 and the second terminal end 222 are located on the flow branching component 22. The first battery module 11 can correspond to the first heat exchange module 201 on the heat exchange plate 2, and the second battery module 12 can correspond to the second heat exchange module 202 on the heat exchange plate 2.

[0145] Specifically, the flow path 21 in 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 in the first type region 26 is located at the proximal end of the heat exchange plate 2. The flow path 21 in the second type region 27 may be away from the flow branching component 22, that is, the flow path 21 in the second type region 27 is located at the distal end of the heat exchange plate 2. In order to ensure a well-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 flow path 21 opposite to the second battery module 12 is set to a second flow rate, and the first flow rate is smaller than the second flow rate.

[0146] Optionally, the direction in which the posts at the two ends of the battery module 1 are connected is the third direction. The third direction may be the Y direction in FIG. 1. That is, each battery module 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 module 1, respectively. When the first direction, the second direction, and the third direction are perpendicular to each other, the plurality of battery modules 1 may form a small-sized battery pack structure to ensure the energy density of the battery pack.

[0147] Optionally, the heat exchange plate 2 is the lower plate or the upper cover.

[0148] Specifically, the heat exchange plate 2 can be disposed on one side or two sides of the battery module 1 along the second direction. When the heat exchange plate 2 can be disposed on one side of the battery module 1 along the second direction, for example, when the heat exchange plate 2 is disposed on the lower side of a plurality of battery modules 1, the heat exchange plate 2 can form the lower plate of the battery pack. On the other hand, when the heat exchange plate 2 is in contact with the battery module 1, the heat exchange effect of the battery module 1 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 2 is disposed on the upper side of a plurality of battery modules 1, the heat exchange plate 2 can form the upper cover of the battery pack. Similarly, when the heat exchange plate 2 is in contact with the battery module 1, the heat exchange effect of the battery module 1 can be ensured. On the other hand, the battery pack can be protected.

[0149] One embodiment of the present disclosure further provides a vehicle including the heat exchange plate 2 or including a battery pack.

[0150] This technical solution 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.

[0151] Based on the heat exchange flow path device, the heat exchange plate 2 and the battery tray can 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 provide a better temperature environment for the battery.

[0152] As shown in FIG. 20, this technical solution provides a heat exchange plate 2. The heat exchange plate 2 is formed with a first end portion 221, a second end portion 222, and a flow path 21. The flow path 21 converges to the first end portion 221 and the second end portion 222 through the flow convergence end.

[0153] 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 to the inside of the flow path plate 24. The flow path 21 is branched by the flow branching / flow convergence point to form more stages of branches. These flow paths 21 are then arranged through the direction change point, and in order to achieve the flow heat exchange in each region, the branches cover the entire flow path plate 24.

[0154] As shown in FIG. 20, the flow path plate 24 and the base plate 23 are combined to form the heat exchange plate 2. On the flow path plate 24, the flow path 21 can have a groove structure and has an unsealed upper surface. After the base plate 23 covers the flow path integrated plate, the base plate 23 can form an upper surface seal on the flow path 21. In this way, the base plate 23 and the flow path 21 as a whole form the heat exchange plate 2. The first terminal portion 221 and the second terminal portion 222 can be formed by combining the terminal portion components provided on the base plate 23 and the flow path plate 24. The terminal portion components are provided with the first terminal portion 221 and the second terminal portion 222. After the base plate 23 covers the flow path plate 24, the first flow convergence end and the second flow convergence end of the flow path 21 can be connected to the first terminal portion 221 and the second terminal portion 222.

[0155] According to the design concept of each feature of the heat exchange plate 2 in this solution, this solution can be divided into different sections. The different sections represent different technical features that this solution focuses on. The flow path 21 is designed based on the technical features that are focused on in order to obtain a more uniform heat exchange solution.

[0156] 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 path 21 from the terminal portion, based on the layout characteristics that the working medium first necessarily flows into the region for heat exchange and then flows into the region for heat exchange, the flow path 21 can be selectively arranged according to the heat conditions in different regions.

[0157] 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 cores. As shown in FIG. 10, 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 cores generate relatively high heat in the integrated battery structure, and the second type region 27 corresponds to the region where the electrode cores generate relatively low heat in the integrated battery structure. In the embodiment shown in FIG. 10, the electrode cores of the battery can be arranged in two rows as shown in FIG. 9. For electrical connection, tabs are usually provided at the two ends of the electrode cores, so 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 part 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 the two ends of the electrode cores.

[0158] 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. 9 and 10 as examples to explain the design features of this part.

[0159] 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 can gradually exchange 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.

[0160] 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 area.

[0161] 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, and the working medium preferentially absorbs the heat generated by the battery structure corresponding to the first type region 26. 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.

[0162] 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 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. Then, 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.

[0163] 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. 9, a part of the electrode core provided with tabs and electrical connection points 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 without electrical connection points and tabs is not likely to generate heat. When heating is required, the region of the electrode core without tabs often becomes lower in temperature and requires more heat. When cooling is required, the region of the electrode core with tabs often becomes higher in temperature 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.

[0164] 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. 9, the first position corresponds to the left vertical bar, the middle vertical bar, and the right vertical bar shown in FIG. 10. 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 battery and electrode core distribution solutions, 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 extend to the first type region 26, and then can extend to the second type region 27 without repeatedly extending between the first type region 26 and the second type region 27.

[0165] As shown in FIG. 14, the heat exchange plate 2 includes a first flow convergence end and a second flow convergence end. The first flow convergence end is the connection point where the flow path 21 converges to the first terminal end 221. The second flow convergence end is the connection point where the flow path 21 converges to the second terminal end 222.

[0166] 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.

[0167] 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.

[0168] In practical applications, as shown in FIG. 10, 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. 10, 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, and then extended to the two regions 271 and 2621, and finally returned to the second flow convergence end.

[0169] 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. 10. 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.

[0170] 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.

[0171] 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.

[0172] 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, if the cooling working medium is concentrated in a certain region and experiences a significant phase change, other regions 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 and branching two flow paths into four as much as possible 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.

[0173] As shown in FIGS. 10 and 11, in the left region near the flow convergence end, i.e., in the three regions 2621, 271, and 2611, due to the congested space, this solution can place the flow branch 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 branching and convergence in these regions helps 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 in these regions more evenly. For example, the working medium flowing from the first flow convergence end can concentrate at the corner of the region 2621, where the first branching occurs, and then the second branching can occur in the upper part 2611. Thereafter, some of the flow paths 21 can branch again at the lower part of the region 271, while the other flow paths 21 do not need to branch. Finally, when the flow path 21 extends to the lower part of the region 2621, the flow path can 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 branching and convergence are completely opposite.

[0174] Optionally, as shown in FIGS. 10 and 11, in the right region away from the flow convergence end, i.e., in the three regions 2622, 2612, and 272, the space is relatively large. This solution can 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 cooling solution as an example, the flow path 21 extending from the first flow convergence end on the left side to the right side can branch separately and extend into the regions 2622 and 2612. In these two regions, the flow path 21 can extend linearly and extend over most of the areas of the two regions in the longitudinal direction. 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 side 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 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 side of the region 272, and branches multiple times to form a plurality of parallel flow paths.

[0175] 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 whole cycle. This ensures the smoothness and uniformity of the whole circulation.

[0176] 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 therethrough, and the flow paths 21 being distributed in the first type region and the second type region.

[0177] 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.

[0178] 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.

[0179] Optionally, the heat exchange plate 2 includes a first flow convergence end and a second flow convergence end.

[0180] 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.

[0181] Optionally, the heat exchange plate 2 includes a first flow convergence end and a second flow convergence end.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] Optionally, the first type region 26 includes a first partition 261 and a second partition 262.

[0187] The second type region 27 includes a first partition region 271.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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 flows into the first partition region 271 of the second type region 27.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] Optionally, in the open-loop circulation process, the working medium branches at least twice and converges at least once.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] Optionally, the first type region 26 includes a first partition 261 and a second partition 262.

[0203] The second type region 27 includes a second partition region 272.

[0204] 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

[0205] the working medium flows from the second partition 262 of the first type region 26 to the first partition region 271.

[0206] Optionally, when the heat exchange plate 2 is in the cooling mode, in the process where the working medium flows from the first partition 261 of the first type region 26 to the second partition region 272, it branches at least twice.

[0207] Optionally, in the process where the working medium flows 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.

[0208] Optionally, when the heat exchange plate 2 is in the cooling mode, the working medium flows into the second partition region 272 after branching at least twice in the first partition 261.

[0209] Optionally, when the heat exchange plate 2 is in the cooling mode, the working medium flows into the first partition region 271 after branching at least twice in the first partition 261 and converges at least once in the second partition region 272.

[0210] 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.

[0211] 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.

[0212] Optionally, the working medium flows into the second partition region 272 from the second subzone 2622.

[0213] Optionally, the working medium bifurcates twice in the second subregion 2612.

[0214] Optionally, the working medium converges once in the second partition region 2721.

[0215] Optionally, the first subregion 2611 is adjacent to the second subzone 2622.

[0216] 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.

[0217] 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.

[0218] 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.

[0219] 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.

[0220] Optionally, the flow path 21 located between the heat exchange region and the third type region branches at most six times or converges at most six times.

[0221] Optionally, the flow path 21 located between the heat exchange region and the third type region enters the second type region 27 after branching in the first type region 26.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] Optionally, the first type region 26 includes a first partition 261 and a second partition 262.

[0226] 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] 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.

[0233] 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.

[0234] Optionally, this open-loop circulation process includes at least two branchings and at least one convergence.

[0235] Optionally, the working medium makes the first branching in the first sub-zone 2621, makes the second branching in the first sub-region 2611, returns to the first sub-zone 2621, and then converges once.

[0236] 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 of the flow path 21 includes at least two branchings and at least two convergences.

[0237] 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.

[0238] The second type region 27 includes the first partition region 271 and the second partition region 272.

[0239] 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.

[0240] The first sub-region 2611 and the first sub-zone 2622 are adjacent to each other.

[0241] Optionally, some of the flow paths 21 allow 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 flowing into the second partition region 272, and then branching into the second sub-zone 2622 and the second sub-region 2612.

[0242] Optionally, some other flow paths 21 allow the working medium to pass through the edges of the first sub-zone 2621 and the first partition region 271, first flowing into the first sub-region 2611, then branching into the first partition region 271, and finally flowing into the first sub-zone 2621.

[0243] Optionally, the flow paths 21 cause the working medium to branch at least twice in the second partition region 272.

[0244] The flow paths 21 cause the working medium to converge at least once in each of the second sub-region 2612 and the second sub-zone 2622.

[0245] 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.

[0246] Optionally, the flow paths 21 cause 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.

[0247] Optionally, after converging in the first sub-region 2611, the working medium flows out from the edge of the heat exchange plate 2.

[0248] 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.

[0249] 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.

[0250] The first flow convergence end is close to the second flow convergence end and is located on the first side of the heat exchange plate 2.

[0251] The heat exchange plate 2 includes a first heat exchange region and a second heat exchange region. The second heat exchange region is located between the first heat exchange region and the first side. The first heat exchange region includes the second type region 27 and the first type region 26 distributed on two opposite sides of the second type region 27.

[0252] The second heat exchange region includes the second type region 27 and the first type region 26 distributed on two opposite sides of the second type region 27.

[0253] 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.

[0254] 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.

[0255] 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.

[0256] 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.

[0257] 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.

[0258] 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.

[0259] 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.

[0260] Embodiments of the present disclosure further provide a flow path integrated plate in four aspects.

[0261] According to the first aspect, referring to FIGS. 4, 5, 10 to 17, embodiments of the present disclosure provide a flow path integrated plate, and the flow path integrated 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, 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.

[0262] 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. 5. The first end portion 221 and the second end portion 222 can be configured to connect the flow path integrated plate to an external component that provides a working medium. For example, an external pump can be connected to the flow path integrated plate through the first end portion 221 and the second end portion 222.

[0263] 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 the first end portion 221 and the second end portion 222 respectively by screws. The flow path 21 in the flow path integrated plate extends from the first flow convergence end to the second flow convergence end after at least one direction change in order to improve the distribution density of the flow path 21 in the flow path integrated plate. For example, in order to ensure the distribution density of the flow path 21 in the flow path integrated plate, the flow path 21 is distributed in a zigzag or snake shape in the flow path integrated plate, thereby improving the heat exchange effect of the flow path integrated plate.

[0264] Optionally, referring to FIG. 14, 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.

[0265] Specifically, the structure of the first type of direction change point 2111 can be shown in FIG. 14. In order to realize the flexible direction change of the flow path 21 and ensure the distribution density of the flow path 21 in the flow path integration 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 flow path integration 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.

[0266] 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 flow path integration plate during heat exchange can be ensured.

[0267] Optionally, referring to FIG. 14, 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 realize the flexible direction change of the flow path 21 and ensure the distribution density of the flow path 21 in the flow path integration 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°.

[0268] Optionally, referring to FIGS. 10 and 14, the first type of flow path turning point 2111 is located at the periphery of the flow path integration plate, and the second type of flow path turning point 2112 is located in the middle of the flow path integration plate. Since both the first type of flow path turning point 2111 and the second type of flow path turning point 2112 have a flow path turning function, the flow path 21 can change direction during bending at both the periphery and the middle of the flow path integration plate. Further, the number of flow paths at one end of the first type of flow path turning point 2111 is greater than the number of flow paths at the other end of the first type of flow path turning point 2111, whereby, after the flow path 21 branches and converges at the periphery of the flow path integration plate, a smooth flow of the flow path 21 in the middle of the flow path integration plate can be ensured.

[0269] Optionally, referring to FIGS. 5 and 10, 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 of the flow path integration plate. For example, the flow path integration plate may be a rectangular plate, and the first side may be the left side of the flow path integration plate in FIG. 10. In the flow path 21, in order to improve the heat exchange efficiency of the working medium of the flow path 21 in the flow path integration 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 of the flow path integration plate, flow around the flow path integration plate, perform heat exchange in the flow path integration plate, and then flow out of the flow path 21 from the left side of the flow path integration plate.

[0270] Optionally, referring to FIGS. 10 and 12, the first flow convergence end is connected to two type-2 direction change points 2112, and the second flow convergence end is connected to two type-1 direction change points 2111. Specifically, when the flow path integration 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 from the flow path 21 from the flow convergence end after convergence, which can simplify the connection between the flow path 21 and the external components.

[0271] When the flow path integration 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.

[0272] Optionally, referring to FIGS. 10 and 11, the flow path integration plate is square, and type-1 direction change points 2111 and type-2 direction change points 2112 are provided at three corner positions of the flow path integration plate, and one corner position of the flow path integration plate is provided with a type-1 direction change point 2111.

[0273] Specifically, as shown in FIG. 10, the flow path integration plate may be a square flow path integration plate. In FIG. 10, at the upper left corner of the flow path integration plate, that is, the corner of the flow path integration plate close to the first flow convergence end, one or more type-1 direction change points 2111 can be provided, so that 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.

[0274] In FIG. 10, in order to ensure that the working medium in the flow path 21 can flexibly branch and converge while changing direction in the flow path integrated 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 the two right corners of the flow path integrated plate.

[0275] Optionally, referring to FIG. 10, a plurality of second-type direction change points 2112 extend in a rectangle.

[0276] 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 continuous 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 flow path integrated plate.

[0277] Optionally, referring to FIG. 10, 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.

[0278] Optionally, the flow path integrated plate further includes a heat exchange plate 2.

[0279] According to a second aspect, referring to FIGS. 4, 5, 10 to 17, embodiments of the present disclosure provide a flow path integrated plate, and the flow path integrated 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 branch / convergence point 212, where the flow branch / convergence point 212 is distributed on the flow path 21 and the number of flow paths 21 at two ends of the flow branch / convergence point 212 is different, the flow branch / convergence point 212, is included.

[0280] 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 flow path 21 in the flow path integration plate branches at least once and converges at least once, and then extends from the first flow convergence end to the second flow convergence end. In order to improve the distribution density of the flow path 21 in the flow path integration plate and improve the heat exchange effect of the flow path integration plate, one or more flow branch / convergence points 212 are formed on the flow path 21. This flow branch can branch one flow path into two, branch one flow path into three, or branch one flow path into more than that. The flow convergence can converge two flow paths into one, converge three flow paths into one, or integrate more flow paths into one.

[0281] Optionally, referring to FIG. 10, 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.

[0282] 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 not branched or 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 flow path integration plate, the number of branch parts is more than the number of trunk parts.

[0283] Optionally, referring to FIG. 15, the flow branch / convergence point 212 includes the first-stage flow branch point 2121, and the branch part includes the first-stage branch part. The first-stage flow branch point 2121 is connected between the trunk and the first-stage branch part.

[0284] Specifically, the first-stage flow branch 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 in the flow path integration plate, the working medium is dispersed as early as possible in the flow path integration plate.

[0285] Optionally, at least two first-stage branch parts are arranged. That is, in order to ensure the distribution density of the flow path 21 in the flow path integration plate, the first-stage flow branch point 2121 can evenly branch the working medium in the trunk into two, three, or more first-stage branch parts.

[0286] In a specific embodiment, referring to FIG. 15, one end of the first-stage flow branch point 2121 is connected to one of the trunks, and the other end of the first-stage flow branch point 2121 is connected to two of the first-stage branch parts. That is, the first-stage flow branch point 2121 can evenly branch the working medium in the trunk into two first-stage branch parts, thereby facilitating the control of the balance of the flow of the working medium in the two first-stage branch parts and ensuring an even flow of the working medium in the two first-stage branch parts.

[0287] Optionally, referring to FIGS. 10 and 15, the flow branching / converging point 212 further includes a second-stage flow branching point 2122, and the branch portion includes a second-stage branch portion. The second-stage flow branching point 2122 is connected between the first-stage branch portion and the second-stage branch portion.

[0288] Specifically, the second-stage flow branching point 2122 functions as a branching or converging 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 paths 21 in the flow path integration plate and the flexibility of heat exchange adjustment, the working medium is dispersed in the flow path integration plate.

[0289] Optionally, at least two second-stage branch portions are arranged. That is, in order to ensure the distribution density of the flow paths 21 in the flow path integration plate, the second-stage flow branching point 2122 can evenly branch the working medium in the first-stage branch portion into two, three, or more second-stage branch portions.

[0290] In a specific embodiment, referring to FIG. 15, one end of the second-stage flow branching point 2122 is connected to one of the first-stage branch portions, and the other end of the second-stage flow branching 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 branching point 2122 can evenly branch the working medium in the first-stage branch portion into two second-stage branch portions.

[0291] Optionally, referring to FIG. 10, the flow branching / flow converging point 212 is located on the periphery of the flow path integration plate.

[0292] Specifically, when the flow branching / flow converging point 212 is located on the periphery of the flow path integration plate, the continuous flow path 21 can be formed in the middle of the flow path integration plate in order to improve the smooth flow of the working medium in the flow paths 21 in the flow path integration plate.

[0293] Optionally, the first-stage branch portion includes an annular branch portion. The annular branch portion may be the annular flow path 25 in FIG. 17. Two ends of the annular branch portion are directly connected to the trunk portion. The trunk portion of the flow path 21 is 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 simplifies the flow path of the working medium in the annular branch portion and can avoid excessive heating and cooling of the first flow convergence end and the second flow convergence end.

[0294] Optionally, referring to FIG. 10, the flow branch / convergence 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.

[0295] The first-stage flow branch point 2121 is connected between the trunk portion and the first-stage branch portion, the second-stage flow branch point 2122 is connected between the first-stage branch portion and the second-stage branch portion, and the third-stage flow branch 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.

[0296] 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.

[0297] Optionally, the flow path integration plate further includes the heat exchange plate 2.

[0298] According to a third aspect, referring to FIGS. 4, 5, 10 to 17, an embodiment of the present disclosure provides a flow path integrated plate. Referring to FIG. 16, the flow path integrated plate includes a first region 28 and a second region 29, and flow paths 21, the flow paths being distributed within the first region 28 and the second region 29, and the average distribution density of the flow paths 21 within the first region 28 being greater than the average distribution density of the flow paths 21 within the second region 29.

[0299] In particular, the flow path integrated plate can be configured to cool or heat a battery. For example, when the flow path integrated plate cools a 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 flow path integrated 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 paths 21 in the first region 28 is greater than the average distribution density of the flow paths 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 flow path integrated plate for the battery.

[0300] Optionally, the width of the flow path 21 is less than 15 mm.

[0301] In particular, when the flow path integrated plate provided by the embodiment of the present disclosure faces different heat exchange requirements at different positions, the heat exchange efficiency of the flow path integrated plate can be improved through different distribution densities of the flow paths 21. That is, the flow paths 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 paths 21, the width of the flow paths 21 can be set to 5 mm to 10 mm.

[0302] Optionally, the flow path integrated plate further includes a heat exchange plate 2.

[0303] According to the fourth aspect, referring to FIGS. 4, 5, 10 to 17, an embodiment of the present disclosure provides a flow path integrated plate, and the flow path integrated plate includes a flow path plate 24, a flow path 21, where the flow path 21 is disposed on the flow path plate 24, and in the plane where the flow path integrated plate is located, the area for disposing the flow path 21 is larger than 70% of the area of the flow path plate 24.

[0304] In particular, the ratio of the area for disposing the flow path 21 on the flow path plate 24 can be flexibly set according to the heat exchange object of the flow path integrated plate. For example, when exchanging heat for a heat exchange object such as a battery with high heat exchange requirements, for batteries with different powers and voltages, in order to improve the flexibility of heat exchange of the flow path integrated 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.

[0305] Optionally, the width of the flow path is less than 15 mm.

[0306] In particular, when the flow path integrated plate provided by the embodiment of the present disclosure faces different heat exchange requirements at different positions, the heat exchange efficiency of the flow path integrated 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.

[0307] Optionally, the flow path integrated plate further includes a heat exchange plate 2.

[0308] An embodiment of the present disclosure is a battery tray, a heat exchange plate, or a flow path integrated plate Further provided is a battery tray including the same.

[0309] One embodiment of the present disclosure further provides a battery structure. The battery structure includes a battery tray.

[0310] In particular, the battery structure includes a battery module 1 having an electrode position and a non - electrode position, and a heat - exchange plate 2 disposed below the battery module 1. A flow path 21 for circulating a working medium is disposed in the heat - exchange plate 2. The heat - exchange plate 2 includes a first - type region 26 facing the electrode position and a second - type region 27 facing the non - electrode position.

[0311] 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.

[0312] 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.

[0313] 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 balance between the gas phase and the 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.

[0314] 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.

[0315] 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 away from each other.

[0316] 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 on two opposite sides of the battery module 1 away from each other, 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 away from each other.

[0317] Optionally, referring to FIGS. 10 and 11, 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.

[0318] 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 away 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.

[0319] 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 do not generate much heat other than 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.

[0320] 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.

[0321] Specifically, all the working media flowing through the first partition 261 and the second partition 262 converge in 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 flows back 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.

[0322] Optionally, in the direction from the first type region 26 to the second type region 27, the number of the flow paths 21 gradually increases.

[0323] Specifically, in the direction from the first type region 26 to the second type region 27, the number of the flow paths 21 may gradually increase. For example, the number of the flow paths 21 increases through branching, 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.

[0324] Optionally, in the direction 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 the flow paths in the second flow path section is twice that of the flow paths in the first flow path section.

[0325] 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.

[0326] 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.

[0327] 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 rates 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.

[0328] Optionally, the radial size of the cross-section of the flow path 21 is in the range of 6 mm to 9 mm.

[0329] 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.

[0330] 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 away 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.

[0331] 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.

[0332] 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.

[0333] Optionally, the heat exchange plate 2 is provided with a flow branching component 22. The flow branching component 22 has a first terminal end 221 and a second terminal end 222. The first terminal end 221 and the second terminal end 222 are respectively connected to two ends of the flow path 21.

[0334] Specifically, the first terminal end 221 and the second terminal end 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 terminal end 221 and the second terminal end 222.

[0335] Optionally, the first terminal end 221 is connected to the flow path 21 of the first type region 26, and the second terminal end 222 is connected to the flow path 21 of the second type region 27.

[0336] 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 terminal end 221 and the second terminal end 222 by screws respectively. The flow path 21 in the flow path integration 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 flow path integration plate. For example, in order to ensure the distribution density of the flow paths 21 in the flow path integration plate, the flow paths 21 are distributed in a zigzag or snake shape in the flow path integration plate, thereby improving the heat exchange effect of the flow path integration plate.

[0337] Optionally, referring to FIGS. 6 and 9, the battery module 1 includes a first battery module 11 and a second battery module 12. The second battery module 12 is located on the side of the first battery module 11 away from the flow branching component 22.

[0338] 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.

[0339] 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 away from the flow branching component 22, that is, the flow path 21 of the second type region 27 is located at the distal end of the heat exchange plate 2. To ensure a balanced heat exchange effect at the proximal end and the distal end of the heat exchange plate 2, the flow rate of the flow path 21 at the distal end can be increased. For example, the flow rate of the flow path in the opposite flow path 21 of the second battery module 12 is set to a second flow rate, and the first flow rate is smaller than the second flow rate.

[0340] 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 coil of the motor, that is, the temperature of the battery is raised by self-heating, whereby the battery can perform better charging and discharging.

[0341] 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.

[0342] 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.

[0343] Optionally, the flow path 21 includes an annular flow path 25 located on the outer periphery of the flow path 21, and the annular flow path 25 is located outside the protruding portion of the battery module 1 on the heat exchange plate 2.

[0344] The flow rate of the annular flow path 25 is 20% to 25% of the total flow rate of the flow path 21, the first flow rate is 30% to 40% of the total flow rate of the flow path 21, and the second flow rate is 40% to 50% of the total flow rate of the flow path 21.

[0345] Specifically, the two ends of the annular 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, 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 flow path 25 simplifies the flow path of the working medium in the annular flow path 25 and can avoid excessive heating and cooling of the first flow convergence end and the second flow convergence end.

[0346] Optionally, the heat exchange plate 2 includes a third region located between the first type region 26 and the second type region 27.

[0347] 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 the 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.

[0348] 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.

[0349] 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.

[0350] Optionally, the heat exchange plate 2 includes a base plate 23 and a flow channel plate 24. The base plate 23 is sandwiched between the flow channel plate 24 and the battery module 1. The flow channel 21 is disposed on the flow channel plate 24.

[0351] One embodiment of the present disclosure further provides a vehicle including the battery structure.

[0352] Although some specific embodiments of the present disclosure have been described in detail by way of examples, 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.

[0353] 1 Battery module 11 First battery module 12 Second battery module 2 Heat exchange plate 21 Flow channel 211 Direction change point 2111 First type direction change point 2112 Second type direction change point 212 Flow branch / convergence point 2121 First stage flow branch point 2122 Second stage flow branch point 22 Flow branch component 221 First end portion 222 Second end portion 23 Base plate 24 Flow channel plate 25 Annular flow channel 26 First type region 261 First partition 2611 First sub-region 2612 Second sub-region 262 Second partition 2621 First sub-zone 2622 Second sub-zone 27 Second type region 271 First partition region 272 Second partition region 28 First region 29 Second region 2120 Flow bifurcation point 21210 First-stage flow bifurcation point 21220 Second-stage flow bifurcation point

Claims

1. A heat exchange plate applied to a battery, a flow path (21), wherein the flow path (21) is arranged in the heat exchange plate, and the flow path (21) is configured to allow a heat exchange working medium to flow through the flow path (21), the flow path (21); and a first end portion (221) and a second end portion (222), wherein one end portion of the flow path (21) is connected to the first end portion (221), the other end portion of the flow path (21) is connected to the second end portion (222), and the first end portion (221) and the second end portion (222) are configured to allow the heat exchange working medium to flow into the heat exchange plate, the first end portion (221) and the second end portion (222); and, the heat exchange plate includes a first type region (26), the first type region (26) is arranged corresponding to a battery post region, the flow path (21) includes a flow branch point (2120), the flow branch point (2120) includes a first-stage flow branch point (21210), at least one first-stage flow branch point (21210) is arranged in the first type region (26), the first-stage flow branch point (21210) is arranged close to the first end portion (221) or the second end portion (222), and the flow branch point (2120) branches the flow path (21), the heat exchange plate.

2. the heat exchange plate includes a first heat exchange module (201) and a second heat exchange module (202), and both the first heat exchange module (201) and the second heat exchange module (202) include the first type region (26), the first type region (26) of the first heat exchange module (201) includes a third sub-region (2621) and a first sub-region (2611), and the first type region (26) of the second heat exchange module (202) includes a fourth sub-region (2622) and a second sub-region (2612), The first-stage flow bifurcation point (21210) is arranged within the third sub-region (2621), the flow bifurcation point (2120) further includes a second-stage flow bifurcation point (21220), and the second-stage flow bifurcation point (21220) is located in at least one of the first sub-region (2611), the third sub-region (2621), and the fourth sub-region (2622). The heat exchange plate according to claim 1.

3. The flow bifurcation point (2120) includes at least two first-stage flow bifurcation points (21210), and two second-stage flow bifurcation points (21220) corresponding to some of the first-stage flow bifurcation points (21210) are both located in the second sub-region (2612), and two second-stage flow bifurcation points (21220) corresponding to another first-stage flow bifurcation point (21210) are respectively located in the first sub-region (2611) and the fourth sub-region (2622). The heat exchange plate according to claim 2.

4. The flow path (21) further includes a third-stage flow bifurcation point, and the third-stage flow bifurcation point is located in at least one of the first sub-region (2611) and the second sub-region (2612). The heat exchange plate according to claim 2.

5. The flow bifurcation point (2120) further includes a fourth-stage flow bifurcation point, and the fourth-stage flow bifurcation point is located in at least one of the third sub-region (2621) and the second sub-region (2612). The heat exchange plate according to claim 4.

6. When the heat exchange plate is configured to cool the battery, the working medium flows in from the first terminal end (221), flows through the first-stage flow bifurcation point (21210), the second-stage flow bifurcation point (21220), and the third-stage flow bifurcation point, and then flows out through the second terminal end (222). The heat exchange plate according to claim 5.

7. The flow path (21) includes a main part and branch parts, the main part is connected to the first terminal end (221) or the second terminal end (222), and the main part connects the branch parts to the first terminal end (221) and the second terminal end (222). The branch parts include a first-stage branch part, a second-stage branch part, a third-stage branch part, and a fourth-stage branch part. The first-stage flow branching point (21210) is connected between the trunk portion and the first-stage branch portion, The second-stage flow branching point (21220) is connected between the first-stage branch portion and the second-stage branch portion, The third-stage flow branching point is connected between the second-stage branch portion and the third-stage branch portion, The fourth-stage flow branching point is connected between the third-stage branch portion and the fourth-stage branch portion. The heat exchange plate according to claim 5 or 6.

8. The flow path further includes a flow convergence point, and the flow convergence point includes a first-stage flow convergence point, a second-stage flow convergence point, a third-stage flow convergence point, and a fourth-stage flow convergence point. Two ends of the fourth-stage branch portion are respectively connected to the fourth-stage flow branching point and the fourth-stage flow convergence point. The fourth-stage branch portion converges to form the third-stage branch portion through the fourth-stage flow convergence point to which the fourth-stage branch portion is connected. The third-stage branch portion formed by the convergence converges to form the second-stage branch portion through the third-stage flow convergence point. The second-stage branch portion formed by the convergence converges to form the first-stage branch portion through the second-stage flow convergence point. The first-stage branch portion formed by the convergence converges to form the trunk portion through the first-stage flow convergence point. The trunk portion is connected to the first terminal end (221), or the trunk portion is connected to the second terminal end (222). The heat exchange plate according to claim 7.

9. Both the first heat exchange module (201) and the second heat exchange module (202) include a second-type region (27), and the second-type region (27) is arranged corresponding to the non-post region of the battery. The second-type region (27) of the first heat exchange module (201) includes a first partition region (271), and the second-type region (27) of the second heat exchange module (202) includes a second partition region (272). At least one first-stage flow branching point (21210) is close to the second terminal end (222) and is arranged in the third sub-region (2621). The flow branching point further includes a second-stage flow branching point (21220), and the second-stage flow branching point (21220) is located in the third sub-region (2621) and the first partition region (271). The heat exchange plate according to claim 2.

10. The heat exchange plate according to claim 9, wherein the flow path (21) further includes a third-stage flow branch point, and the third-stage flow branch point is located within the second partition region (272).

11. The heat exchange plate according to claim 9 or 10, wherein the flow branch point (2120) further includes a fourth-stage flow branch point, and the fourth-stage flow branch point is arranged within the second partition region (272).

12. When the heat exchange plate is configured to heat the battery, the working medium flows in from the second end portion (222), passes through the first-stage flow branch point (21210), the second-stage flow branch point (21220), and the third-stage flow branch point, and then flows out through the first end portion (221). The heat exchange plate according to claim 10.

13. The heat exchange plate according to claim 8, wherein a part of the second-stage branch portion is distributed at the edges of the first heat exchange module (201) and the second heat exchange module (202).

14. The heat exchange plate according to claim 13, wherein the flow path branches at the Nth stage within the first heat exchange module (201) and branches at the Mth stage within the second heat exchange module (202), where M ≤ N.

15. The heat exchange plate according to claim 13, wherein the flow path (21) forms n1 branch portions after branching at the Nth stage within the first heat exchange module (201), and forms m1 branch portions after branching at the Mth stage within the second heat exchange module (202), where m1 > n1.

16. It further includes a second-type region (27), 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) in the first-type region (26) to the flow path (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 path (21) in the second-type region (27) to the flow path (21) in the first-type region (26). The heat exchange plate according to any one of claims 1 to 8.

17. 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, in the process where the working medium flows from the first partition (261) to the second type region (27), it branches at least twice. The heat exchange plate according to claim 16. **Claim 18** The heat exchange plate has a first region (28) and a second region (29), the flow paths are distributed within the first region (28) and the second region (29), and the average distribution density of the flow paths (21) within the first region (28) is greater than the average distribution density of the flow paths (21) within the second region (29). The heat exchange plate according to any one of claims 1 to 17. **Claim 19** 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 (24). The heat exchange plate according to any one of claims 1 to 18. **Claim 20** A battery pack including the heat exchange plate according to any one of claims 1 to 19. **Claim 21** The heat exchange plate according to any one of claims 1 to 19, or A vehicle including the battery pack according to claim 20.

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