Battery heat exchange integrated structure and thermal management system

Abstract

The application relates to a battery heat exchange integrated structure and a thermal management system. The battery heat exchange integrated structure comprises an intermediate heat exchange plate, a first heat exchange plate and a second heat exchange plate. A plurality of first heat exchange plates are arranged at one side of the intermediate heat exchange plate at intervals, and adjacent first heat exchange plates and the intermediate heat exchange plate surround to form a first fixing groove for fixing one or more first battery modules. A plurality of second heat exchange plates are arranged at the side, away from the first heat exchange plate, of the intermediate heat exchange plate at intervals, and adjacent second heat exchange plates and the intermediate heat exchange plate surround to form a second fixing groove for fixing one or more second battery modules. The battery heat exchange integrated structure and the thermal management system provided by the application solve the problem that the number of cooling plates and the number of fixing supports corresponding to each battery cell are too large, which leads to a substantial increase in the weight and volume of the battery pack, thereby reducing the energy density of the battery pack and increasing the installation space of the battery pack.

Description

Technical Field

[0001] This application relates to the field of battery thermal management technology, and in particular to a battery heat exchange integrated structure and thermal management system. Background Technology

[0002] When electric vehicles operate under various driving conditions, the battery generates a significant amount of heat. Excessive battery temperature can lead to reduced battery life and performance, necessitating cooling. Currently, cooling plates are commonly used for battery cooling. To ensure effective cooling, each cell requires a separate cooling plate on its bottom and side, and these plates also require specialized mounting brackets for installation. This results in an excessive number of cooling plates and mounting brackets per cell, significantly increasing the overall weight and volume of the battery pack, thereby reducing its energy density and increasing the installation space required. Summary of the Invention

[0003] Therefore, it is necessary to provide a battery heat exchange integrated structure and thermal management system to solve the problem that the excessive number of cooling plates and fixing brackets for each cell leads to a significant increase in the overall weight and volume of the battery pack, thereby reducing the energy density of the battery pack and increasing the installation space of the battery pack.

[0004] The battery heat exchange integrated structure provided in this application includes an intermediate heat exchange plate, a first heat exchange plate, and a second heat exchange plate. One end of the first heat exchange plate is connected to the intermediate heat exchange plate, and the other end extends away from the intermediate heat exchange plate. Multiple first heat exchange plates are spaced apart on one side of the intermediate heat exchange plate. Adjacent first heat exchange plates and the intermediate heat exchange plate form a first fixing groove. The first fixing groove is used to fix one or more first battery modules, and the bottom of the first battery module is attached to the intermediate heat exchange plate. The opposite sides of the first battery module are respectively attached to adjacent first heat exchange plates. One end of the second heat exchange plate is connected to the intermediate heat exchange plate, and the other end extends away from the intermediate heat exchange plate. Multiple second heat exchange plates are spaced apart on the side of the intermediate heat exchange plate away from the first heat exchange plate. Adjacent second heat exchange plates and the intermediate heat exchange plate form a second fixing groove. The second fixing groove is used to fix one or more second battery modules, and the bottom of the second battery module is attached to the intermediate heat exchange plate. The opposite sides of the second battery module are respectively attached to adjacent second heat exchange plates.

[0005] In one embodiment, the first heat exchange plate is provided with a first heat exchange channel, the second heat exchange plate is provided with a second heat exchange channel, and the intermediate heat exchange plate is provided with an intermediate heat exchange channel. The liquid inlet end of the first heat exchange channel and the liquid inlet end of the second heat exchange channel are respectively connected to the liquid inlet end of the intermediate heat exchange channel, and the liquid outlet end of the first heat exchange channel and the liquid outlet end of the second heat exchange channel are respectively connected to the liquid outlet end of the intermediate heat exchange channel.

[0006] In one embodiment, a first heat exchange plate is disposed above an intermediate heat exchange plate, and a second heat exchange plate is disposed below an intermediate heat exchange plate. The first heat exchange plate has a flared portion, through which an intermediate heat exchange channel connects to the first heat exchange channel. The cross-sectional area of ​​the flared portion expands from the end connecting to the first heat exchange channel to the end connecting to the intermediate heat exchange channel. The second heat exchange plate has a constricted portion, through which an intermediate heat exchange channel connects to the second heat exchange channel. The cross-sectional area of ​​the constricted portion contracts from the end connecting to the second heat exchange channel to the end connecting to the intermediate heat exchange channel. Furthermore, the maximum cross-sectional area of ​​the flared portion is greater than the minimum cross-sectional area of ​​the constricted portion.

[0007] In one embodiment, the maximum inner diameter a of the flared portion, the minimum inner diameter b of the flared portion, the maximum inner diameter c of the constricted portion, and the minimum inner diameter d of the constricted portion satisfy the following condition: d <b<c<a。

[0008] In one embodiment, the intermediate heat exchange plate includes a first cover plate, a second cover plate, and a central main plate. The central main plate has a through groove extending through itself along the thickness direction. The first cover plate and the second cover plate are respectively disposed on both sides of the central main plate along the thickness direction and surround the through groove to form an intermediate heat exchange channel.

[0009] In one embodiment, the connecting channel includes an inlet liquid collecting channel and an outlet liquid collecting channel, and the connecting channel also includes a plurality of parallel liquid separating channels, which are respectively connected to the inlet liquid collecting channel and the outlet liquid collecting channel.

[0010] In one embodiment, the battery heat exchange integrated structure further includes an inlet manifold and an outlet manifold, with the inlet manifold connected to the inlet end of the intermediate heat exchange plate and the outlet manifold connected to the outlet end of the intermediate heat exchange plate.

[0011] In one embodiment, both the first heat exchange plate and the second heat exchange plate are arranged in a wavy, curved configuration.

[0012] Alternatively, both the first and second heat exchange plates can be arranged in a stepped bend.

[0013] In one embodiment, the first heat exchange plate and the second heat exchange plate are respectively welded to both sides of the intermediate heat exchange plate;

[0014] Alternatively, the first and second heat exchange plates are snapped together with the intermediate heat exchange plate;

[0015] Alternatively, the first and second heat exchange plates can be detachably connected to the intermediate heat exchange plate via fasteners.

[0016] This application also provides a thermal management system, which includes the battery heat exchange integrated structure described in any of the above embodiments.

[0017] Compared with existing technologies, the battery heat exchange integrated structure and thermal management system provided in this application, because adjacent first battery modules share a first heat exchange plate and adjacent second battery modules share a second heat exchange plate, and further, the first and second battery modules share an intermediate heat exchange plate, significantly reduces the total number of heat exchange plates (including heat exchange plates located on the sides and bottom) required for the first and second battery modules. This reduces the weight and volume of the entire battery pack while ensuring the heat exchange efficiency of the battery modules (including the first and second battery modules), thereby increasing the energy density of the battery pack and reducing its installation space.

[0018] Furthermore, since the first fixing slot can fix one or more first battery modules, and the second fixing slot can fix one or more second battery modules, the structure formed by the first heat exchange plate, the second heat exchange plate, and the intermediate heat exchange plate can also be used to install and fix the first and second battery modules. That is, the battery heat exchange integrated structure provided in this application does not require additional mounting brackets for installing the first and second battery modules.

[0019] In summary, the battery heat exchange integrated structure provided in this application effectively solves the problem that excessive cooling plates and fixing brackets for each cell lead to a significant increase in the overall weight and volume of the battery pack, thereby reducing the energy density of the battery pack and increasing the installation space of the battery pack. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a battery heat exchange integrated structure according to an embodiment of this application;

[0022] Figure 2 An exploded view of a battery heat exchange integrated structure according to an embodiment of this application;

[0023] Figure 3 A schematic diagram of the structure of the central motherboard provided in this application;

[0024] Figure 4 A cross-sectional view of the connection between the liquid inlet ends of the first heat exchange plate, the second heat exchange plate and the intermediate heat exchange plate in an embodiment provided in this application.

[0025] Figure 5 A schematic diagram of the structure of the first heat exchange plate according to another embodiment provided in this application;

[0026] Figure 6 A schematic diagram of the flow of heat exchange medium within the first heat exchange plate according to an embodiment provided in this application;

[0027] Figure 7 A top view of a battery heat exchange integrated structure according to an embodiment of this application;

[0028] Figure 8 for Figure 7 The sectional view at point AA is shown.

[0029] Figure 9 for Figure 8 An enlarged view of point A shown;

[0030] Figure 10 for Figure 8 An enlarged view of point B shown;

[0031] Figure 11 An exploded view of the inlet manifold and the first baffle plate according to an embodiment provided in this application;

[0032] Figure 12 An exploded view of the liquid outlet manifold and the second baffle plate according to an embodiment provided in this application.

[0033] Reference numerals: 100, First heat exchange plate; 110, First fixing groove; 120, First heat exchange channel; 130, Flared section; 140, Liquid inlet manifold; 141, Liquid inlet manifold channel; 142, First baffle plate; 143, Straight pipe; 144, First mounting groove; 145, First assembly port; 146, Liquid inlet connecting groove; 150, Liquid outlet manifold; 151, Liquid outlet manifold channel; 152, Second baffle plate; 153, Second mounting groove; 154, Second assembly port; 155, Liquid outlet connecting groove; 160, Distributor pipe ; 161, Liquid distribution channel; 162, Odd-numbered channel; 163, Even-numbered channel; 164, Branch channel; 200, Second heat exchange plate; 210, Second fixed tank; 220, Second heat exchange channel; 230, Narrow section; 300, Intermediate heat exchange plate; 310, Intermediate heat exchange channel; 320, First cover plate; 330, Second cover plate; 340, Central main plate; 341, Connecting tank; 342, Inlet collection tank; 343, Outlet collection tank; 344, Liquid distribution tank; 400, Inlet main pipe; 500, Outlet main pipe. Detailed Implementation

[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] When electric vehicles operate under various driving conditions, the battery generates a significant amount of heat. Excessive battery temperature can lead to reduced battery life and performance, necessitating cooling. Currently, cooling plates are commonly used for battery cooling. To ensure effective cooling, each cell requires a separate cooling plate on its bottom and side, and these plates also require specialized mounting brackets for installation. This results in an excessive number of cooling plates and mounting brackets per cell, significantly increasing the overall weight and volume of the battery pack, thereby reducing its energy density and increasing the installation space required.

[0041] Please see Figures 1-12To address the issue of excessive cooling plates and mounting brackets for each battery cell leading to a significant increase in the overall weight and volume of the battery pack, thereby reducing its energy density and increasing installation space, this application provides a battery heat exchange integrated structure. This structure includes an intermediate heat exchange plate 300, a first heat exchange plate 100, and a second heat exchange plate 200. One end of the first heat exchange plate 100 is connected to the intermediate heat exchange plate 300, and the other end extends away from the intermediate heat exchange plate 300. Multiple first heat exchange plates 100 are spaced apart on one side of the intermediate heat exchange plate 300. Adjacent first heat exchange plates 100 and the intermediate heat exchange plate 300 form a first fixing groove 110, which is used to fix one or more first battery modules. The bottom of the first battery module is attached to the intermediate heat exchange plate 300, and the opposite sides of the first battery module are respectively attached to adjacent first heat exchange plates 100. One end of the second heat exchange plate 200 is connected to the intermediate heat exchange plate 300, and the other end extends away from the intermediate heat exchange plate 300. Multiple second heat exchange plates 200 are spaced apart on the side of the intermediate heat exchange plate 300 away from the first heat exchange plate 100, and adjacent second heat exchange plates 200 and intermediate heat exchange plate 300 surround to form a second fixing groove 210. The second fixing groove 210 is used to fix one or more second battery modules, and the bottom of the second battery module is attached to the intermediate heat exchange plate 300, and the opposite sides of the second battery module are respectively attached to the adjacent second heat exchange plates 200.

[0042] It should be noted that the first battery module or the second battery module includes, but is not limited to, battery modules and battery cells. Furthermore, the first battery module is fixed to the first fixing slot 110 in ways including, but not limited to, clamping the first battery module with the clamping action of adjacent first heat exchange plates 100. Similarly, the second battery module is fixed to the second fixing slot 210 in ways including, but not limited to, clamping the second battery module with the clamping action of adjacent second heat exchange plates 200.

[0043] Furthermore, it should be noted that the intermediate heat exchange plate 300, the first heat exchange plate 100, and the second heat exchange plate 200 are all made of materials with high thermal conductivity, such as aluminum alloy, iron alloy, or copper alloy.

[0044] Since adjacent first battery modules share a first heat exchange plate 100, and adjacent second battery modules share a second heat exchange plate 200, and further, the first and second battery modules share an intermediate heat exchange plate 300, this configuration significantly reduces the total number of heat exchange plates (including those on the sides and at the bottom) required for the first and second battery modules. This reduces the overall weight and volume of the battery pack while maintaining the heat exchange efficiency of the battery modules (including the first and second battery modules), thereby increasing the energy density of the battery pack and reducing its installation space.

[0045] Furthermore, since the first fixing groove 110 can fix one or more first battery modules, and the second fixing groove 210 can fix one or more second battery modules, the structure formed by the first heat exchange plate 100, the second heat exchange plate 200, and the intermediate heat exchange plate 300 can also be used to install and fix the first and second battery modules. That is, the battery heat exchange integrated structure provided in this application does not require additional mounting brackets for installing the first and second battery modules.

[0046] In summary, the battery heat exchange integrated structure provided in this application effectively solves the problem that excessive cooling plates and fixing brackets for each cell lead to a significant increase in the overall weight and volume of the battery pack, thereby reducing the energy density of the battery pack and increasing the installation space of the battery pack.

[0047] In one embodiment, such as Figure 1 and Figure 2 As shown, both the first heat exchange plate 100 and the second heat exchange plate 200 are arranged in a wavy, curved shape.

[0048] This facilitates the clamping of the cylindrical battery cell by the first heat exchange plate 100 and the second heat exchange plate 200.

[0049] However, this is not the only embodiment. In other embodiments, the first heat exchange plate 100 and the second heat exchange plate 200 may both be arranged in a stepped bending configuration.

[0050] This allows the first heat exchange plate 100 and the second heat exchange plate 200 to clamp the square-shaped battery cell.

[0051] In his embodiments, such as Figure 5 As shown, the first heat exchange plate 100 and the second heat exchange plate 200 can both be arranged in a planar shape.

[0052] In one embodiment, the first heat exchange plate 100 and the second heat exchange plate 200 are respectively welded to both sides of the intermediate heat exchange plate 300.

[0053] This effectively improves the battery heat exchange integrated structure and reduces the assembly difficulty of the battery heat exchange integrated structure.

[0054] However, this is not the only embodiment. In other embodiments, the first heat exchange plate 100 and the second heat exchange plate 200 may also be snapped together with the intermediate heat exchange plate 300. Alternatively, the first heat exchange plate 100 and the second heat exchange plate 200 may also be detachably connected to the intermediate heat exchange plate 300 via fasteners, which will not be listed here.

[0055] In one embodiment, such as Figure 4As shown, the first heat exchange plate 100 is provided with a first heat exchange channel 120, the second heat exchange plate 200 is provided with a second heat exchange channel 220, and the intermediate heat exchange plate 300 is provided with an intermediate heat exchange channel 310. The liquid inlet end of the first heat exchange channel 120 and the liquid inlet end of the second heat exchange channel 220 are respectively connected to the liquid inlet end of the intermediate heat exchange channel 310, and the liquid outlet end of the first heat exchange channel 120 and the liquid outlet end of the second heat exchange channel 220 are respectively connected to the liquid outlet end of the intermediate heat exchange channel 310.

[0056] In this way, the heat exchange medium (including but not limited to coolant) can enter the intermediate heat exchange channel 310 from the inlet end and exit from the outlet end. Furthermore, the heat exchange medium can also enter the first heat exchange channel 120 and the second heat exchange channel 220 from the inlet end of the intermediate heat exchange channel 310. That is, this arrangement achieves interconnection between the first heat exchange channel 120, the second heat exchange channel 220, and the intermediate heat exchange channel 310, greatly reducing the difficulty of circulating the heat exchange medium within the battery heat exchange integrated structure.

[0057] Furthermore, in one embodiment, as Figure 4 As shown, the first heat exchange plate 100 is disposed above the intermediate heat exchange plate 300, and the second heat exchange plate 200 is disposed below the intermediate heat exchange plate 300. The first heat exchange plate 100 has a flared portion 130, through which the intermediate heat exchange channel 310 connects to the first heat exchange channel 120. The cross-sectional area of ​​the flared portion 130 expands from one end connecting to the first heat exchange channel 120 to one end connecting to the intermediate heat exchange channel 310. The second heat exchange plate 200 has a constricted portion 230, through which the intermediate heat exchange channel 310 connects to the second heat exchange channel 220. The cross-sectional area of ​​the constricted portion 230 contracts from one end connecting to the second heat exchange channel 220 to one end connecting to the intermediate heat exchange channel 310. Furthermore, the maximum cross-sectional area of ​​the flared portion 130 is greater than the minimum cross-sectional area of ​​the constricted portion 230.

[0058] Because the cross-sectional area of ​​the flared portion 130 expands from one end connecting to the first heat exchange channel 120 to one end connecting to the intermediate heat exchange channel 310, the cross-sectional area of ​​the flared portion 130 is largest near the intermediate heat exchange channel 310. Similarly, because the cross-sectional area of ​​the constricted portion 230 contracts from one end connecting to the second heat exchange channel 220 to one end connecting to the intermediate heat exchange channel 310, the cross-sectional area of ​​the constricted portion 230 is smallest near the intermediate heat exchange channel 310. By setting the maximum cross-sectional area of ​​the flared portion 130 to be greater than the minimum cross-sectional area of ​​the constricted portion 230, it is beneficial to increase the flow rate of the heat exchange medium entering the first heat exchange channel 120 through the flared portion 130, and also to reduce the flow rate of the heat exchange medium entering the second heat exchange channel 220 through the constricted portion 230. Furthermore, because the first heat exchange plate 100 is located above the intermediate heat exchange plate 300, and the second heat exchange plate 200 is located below the intermediate heat exchange plate 300. Therefore, by setting the constriction portion 230 and the flare portion 130, the problem that the amount of heat exchange medium entering the first heat exchange channel 120 due to gravity is significantly less than the amount of heat exchange medium entering the second heat exchange channel 220 can be effectively balanced.

[0059] Furthermore, since the cross-sectional area of ​​the flared portion 130 expands from one end connecting the first heat exchange channel 120 to one end connecting the intermediate heat exchange channel 310, when the heat exchange medium in the intermediate channel enters the first heat exchange channel 120 from the flared portion 130, the flow velocity of the heat exchange medium will increase significantly due to the reduction of the flow area. This is beneficial for the heat exchange medium to overcome gravity and rise to a higher position in the first heat exchange channel 120.

[0060] Furthermore, in one embodiment, as Figure 4 As shown, the maximum inner diameter a of the flared portion 130, the minimum inner diameter b of the flared portion 130, the maximum inner diameter c of the constricted portion 230, and the minimum inner diameter d of the constricted portion 230 satisfy the following condition: d <b<c<a。

[0061] This configuration can further and effectively balance the flow rate of the heat exchange medium at different heights within the first heat exchange channel 120 and the second heat exchange channel 220.

[0062] In one embodiment, such as Figure 2 and Figure 3 As shown, the intermediate heat exchange plate 300 includes a first cover plate 320, a second cover plate 330, and a central main plate 340. The central main plate 340 is provided with a connecting groove 341 that runs through itself along the thickness direction. The first cover plate 320 and the second cover plate 330 are respectively covered on both sides of the central main plate 340 along the thickness direction and surround the connecting groove 341 to form an intermediate heat exchange channel 310.

[0063] This configuration facilitates the rapid distribution of the heat exchange medium through the inlet end of the intermediate heat exchange channel 310 to the first heat exchange channel 120, the second heat exchange channel 220, and the intermediate heat exchange channel 310. Furthermore, since the connecting groove 341 penetrates the central main board 340 along the thickness direction, the difficulty of machining the connecting groove 341 on the central main board 340 is greatly reduced, which means that the machining difficulty of the battery heat exchange integrated structure is reduced.

[0064] Specifically, the first cover plate 320 and the second cover plate 330 are respectively provided with multiple connecting holes, and the first heat exchange channel 120 and the second heat exchange channel 220 are respectively connected to the intermediate heat exchange channel 310 through different connecting holes.

[0065] However, it is not limited to this. In other embodiments, the intermediate heat exchange plate 300 can also be a double-layer plate structure, that is, the intermediate heat exchange channel 310 can be formed directly by two layers of cover plates.

[0066] Furthermore, in one embodiment, the central motherboard 340 forms the connecting groove 341 by stamping, or the central motherboard 340 forms the connecting groove 341 by casting.

[0067] Furthermore, in one embodiment, the first cover plate 320, the second cover plate 330, and the central main board 340 are detachably connected by fasteners, or the first cover plate 320 and the second cover plate 330 are respectively welded to both sides of the central main board 340.

[0068] In one embodiment, such as Figure 3 As shown, the connecting channel 341 includes an inlet collecting channel 342 and an outlet collecting channel 343, and the connecting channel 341 also includes a plurality of parallel distributing channels 344, which are respectively connected to the inlet collecting channel 342 and the outlet collecting channel 343.

[0069] This configuration helps to increase the heat exchange uniformity at different locations in the intermediate heat exchange channel 310.

[0070] Furthermore, in one embodiment, the liquid distribution tank 344 is S-shaped.

[0071] This configuration helps to increase the total path length of the connecting groove 341, which in turn helps to increase the length of the flow path of the heat exchange medium in the intermediate heat exchange channel 310, thereby improving the heat exchange uniformity of the battery heat exchange integrated structure.

[0072] However, it is not limited to this. The separatory trough 344 can also be in the shape of a straight line or a serpentine shape with more bends than the S-shape.

[0073] In one embodiment, such as Figure 1 and Figure 2As shown, the battery heat exchange integrated structure also includes an inlet manifold 400 and an outlet manifold 500. The inlet manifold 400 is connected to the inlet end of the intermediate heat exchange plate 300, and the outlet manifold 500 is connected to the outlet end of the intermediate heat exchange plate 300.

[0074] This facilitates the dispersion and concentration of the heat exchange medium within the battery heat exchange integrated structure.

[0075] Specifically, the inlet manifold 400 and the outlet manifold 500 are respectively connected to the two ends of the first cover plate 320.

[0076] Typically, both the first and second battery modules are vertically arranged. Therefore, the first heat exchange plate 100 located on the side of the first battery module is vertically arranged corresponding to the first battery module, and the second heat exchange plate 200 located on the side of the second battery module is vertically arranged corresponding to the second battery module.

[0077] However, the vertical arrangement of the first heat exchange plate 100 and the second heat exchange plate 200 will result in uneven distribution of the heat exchange medium within the first heat exchange plate 100 and the second heat exchange plate 200. That is, the heat exchange medium within the first heat exchange plate 100 and the second heat exchange plate 200 is prone to be concentrated at the lower end of the first heat exchange plate 100 and the second heat exchange plate 200 under the action of gravity. This is not conducive to the uniform distribution of the heat exchange medium within the first heat exchange plate 100 and the second heat exchange plate 200 in the vertical direction.

[0078] Please see Figures 6-12 To address the problem of uneven vertical distribution of the heat exchange medium within the existing first heat exchange plate 100 and second heat exchange plate 200, in one embodiment, the first heat exchange plate 100 is provided with an inlet liquid collection channel 141, an outlet liquid collection channel 151, and a liquid distribution channel 161. The inlet liquid collection channel 141 and the outlet liquid collection channel 151 are both vertically arranged, and multiple liquid distribution channels 161 are distributed parallel to each other along the vertical direction, and each liquid distribution channel 161 is connected to the inlet liquid collection channel 141 and the outlet liquid collection channel 151 respectively. Multiple liquid distribution channels 161 are sequentially divided into odd-numbered channels 162 and even-numbered channels 163 from top to bottom. Multiple first baffles 142 are provided within the inlet collection channel 141, with each first baffle 142 positioned between the upper odd-numbered channels 162 and the lower even-numbered channels 163, ensuring that the upper odd-numbered channels 162 and the lower even-numbered channels 163 are not connected within the inlet collection channel 141. Multiple second baffles 152 are provided within the outlet collection channel 151, with each second baffle 152 positioned between the upper even-numbered channels 163 and the lower odd-numbered channels 162, ensuring that the upper even-numbered channels 163 and the lower odd-numbered channels 162 are not connected within the outlet collection channel 151. The second heat exchange plate 200 and the first heat exchange plate 100 are arranged in a mirror-symmetric configuration in the vertical direction.

[0079] It should be noted that odd-numbered channels 162 refer to the 1st, 3rd, 5th and 7th dispensing channels 161 in odd order from top to bottom, while even-numbered channels 163 refer to the 2nd, 4th, 6th and 8th dispensing channels 161 in even order from top to bottom.

[0080] Since the upper odd-numbered channels 162 and the lower even-numbered channels 163 are not connected within the inlet collection channel 141, and the upper even-numbered channels 163 and the lower odd-numbered channels 162 are not connected within the outlet collection channel 151, it can be seen that the heat exchange medium can form a serpentine meandering channel within the first heat exchange plate 100. Furthermore, the more times the heat exchange medium meanders within the distribution channel 161, the finer the distribution channel 161 is divided, and the more uniform the distribution of the heat exchange medium within the first heat exchange plate 100. Therefore, this arrangement avoids the heat exchange medium from concentrating entirely at the bottom of the first heat exchange plate 100, greatly improving the uniformity of the heat exchange medium's vertical distribution within the first heat exchange plate 100.

[0081] Furthermore, it should be noted that the statement that "the second heat exchange plate 200 and the first heat exchange plate 100 are arranged in a mirror-symmetric manner in the vertical direction" is unrelated to the distribution of the first heat exchange plate 100 and the second heat exchange plate 200 on the horizontal plane. That is, the first heat exchange plate 100 and the second heat exchange plate 200 can be staggered, parallel, or intersecting on the horizontal plane.

[0082] Furthermore, because the second heat exchange plate 200 and the first heat exchange plate 100 are arranged in a mirror-symmetric manner in the vertical direction, the heat exchange medium also flows in a serpentine pattern within the second heat exchange plate 200, which further increases the uniformity of heat exchange medium distribution within the second heat exchange plate 200. Moreover, the mirror-symmetric arrangement of the second heat exchange plate 200 and the first heat exchange plate 100 in the vertical direction allows them to share a single liquid inlet and outlet, significantly reducing the structural complexity of the battery heat exchange integrated structure.

[0083] However, it is not limited to this. The second heat exchange plate 200 and the first heat exchange plate 100 can also be arranged repeatedly in the vertical direction.

[0084] In one embodiment, such as Figure 6 As shown, the number of odd-numbered channels 162 is greater than the number of even-numbered channels 163.

[0085] In this way, the heat exchange medium inside the first heat exchange plate 100 can eventually flow out from the liquid outlet collection channel 151.

[0086] Furthermore, in one embodiment, as Figures 6-10As shown, the bottom end of the liquid inlet collection channel 141 is separated from the middle channel plate, and a straight pipe 143 is provided inside the liquid inlet collection channel 141. One end of the straight pipe 143 is connected to the middle heat exchange plate 300, and the other end passes through multiple first barrier plates 142 in sequence and extends to the uppermost end of the liquid inlet collection channel 141, so that the middle channel plate can be directly connected to the uppermost liquid distribution channel 161 through the straight pipe 143.

[0087] In this way, the heat exchange medium in the middle channel plate can directly enter the uppermost liquid distribution channel 161, and the heat exchange medium can flow from the uppermost liquid distribution channel 161 to the lowermost liquid distribution channel 161 in a roundabout manner.

[0088] However, this is not the only embodiment. In other embodiments, the liquid inlet collection channel 141 can also be divided into a first channel (not shown) and a second channel (not shown) arranged vertically side by side. The first channel directly connects the intermediate heat exchange plate 300 and the uppermost end of the liquid inlet collection channel 141, and the first baffle plate 142 is disposed in the second channel.

[0089] Furthermore, in one embodiment, the inner diameter of the straight pipe 143 gradually decreases from the direction near the intermediate channel plate to the direction away from the intermediate channel plate.

[0090] This configuration helps to increase the flow rate of the heat exchange medium in the straight pipe 143, which in turn facilitates the entry of the heat exchange medium into the uppermost liquid distribution channel 161.

[0091] In one embodiment, such as Figures 8-10 As shown, the liquid distribution channel 161 includes multiple branch channels 164 that are distributed in parallel along the vertical direction. The multiple branch channels 164 are respectively connected to the inlet liquid collection channel 141 and the outlet liquid collection channel 151.

[0092] In this way, each liquid distribution channel 161 is further divided in the vertical direction, which improves the uniformity of heat exchange medium distribution in the vertical direction of each liquid distribution channel 161, that is, further improves the uniformity of heat exchange medium distribution in the entire first heat exchange plate 100.

[0093] In one embodiment, such as Figures 6-10 As shown, the first heat exchange plate 100 includes an inlet manifold 140, an outlet manifold 150, and a distributor 160. The inlet manifold 140 is provided with an inlet manifold channel 141, the outlet manifold 150 is provided with an outlet manifold channel 151, and the distributor 160 is provided with a distributor channel 161.

[0094] This reduces the assembly difficulty of the first heat exchange plate 100.

[0095] Furthermore, in one embodiment, as Figure 11As shown, the side of the liquid inlet manifold 140 is provided with a plurality of first mounting grooves 144. The first mounting grooves 144 penetrate one side wall of the liquid inlet manifold 140 along the cross-sectional direction of the liquid inlet manifold 140 and form a first assembly port 145. The first baffle plate 142 is installed in the first mounting groove 144 through the first assembly port 145.

[0096] This greatly reduces the difficulty of installing the first barrier plate 142.

[0097] Similarly, in one embodiment, such as Figure 12 As shown, the side of the liquid outlet manifold 150 is provided with a plurality of second mounting grooves 153. The second mounting grooves 153 penetrate one side wall of the liquid outlet manifold 150 along the cross-sectional direction of the liquid outlet manifold 150 and form a second assembly port 154. The second baffle plate 152 is installed in the second mounting groove 153 through the second assembly port 154.

[0098] This greatly reduces the difficulty of installing the second barrier plate 152.

[0099] Furthermore, in one embodiment, as Figure 11 As shown, the liquid inlet manifold 140 is provided with a liquid inlet connecting groove 146 extending in the vertical direction, and multiple liquid distribution channels 161 are respectively connected to the liquid inlet manifold 141 through the liquid inlet connecting groove 146.

[0100] Similarly, in one embodiment, such as Figure 12 As shown, the liquid outlet manifold 150 is provided with a liquid outlet connecting groove 155 extending in the vertical direction, and multiple liquid distribution channels 161 are connected to the liquid outlet manifold 151 through the liquid outlet connecting groove 155 respectively.

[0101] This application also provides a thermal management system, which includes the battery heat exchange integrated structure described in any of the above embodiments.

[0102] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A battery heat exchange integrated structure, characterized in that, The system includes an intermediate heat exchange plate (300), a first heat exchange plate (100), and a second heat exchange plate (200). One end of the first heat exchange plate (100) is connected to the intermediate heat exchange plate (300), and the other end extends away from the intermediate heat exchange plate (300). Multiple first heat exchange plates (100) are spaced apart on one side of the intermediate heat exchange plate (300). Adjacent first heat exchange plates (100) and the intermediate heat exchange plate (300) form a first fixing groove (110). The first fixing groove (110) is used to fix one or more first battery modules, and the bottom of the first battery module is attached to the intermediate heat exchange plate (300). The opposite sides of the first battery module are respectively attached to the adjacent first heat exchange plate (200). A heat exchange plate (100); a second heat exchange plate (200) is connected at one end to the intermediate heat exchange plate (300) and extends at the other end away from the intermediate heat exchange plate (300). A plurality of second heat exchange plates (200) are spaced apart on the side of the intermediate heat exchange plate (300) away from the first heat exchange plate (100), and adjacent second heat exchange plates (200) and the intermediate heat exchange plate (300) surround to form a second fixing groove (210). The second fixing groove (210) is used to fix one or more second battery modules, and the bottom of the second battery module is attached to the intermediate heat exchange plate (300), and the opposite sides of the second battery module are respectively attached to the adjacent second heat exchange plates (200). The first heat exchange plate (100) is provided with a first heat exchange channel (120), the second heat exchange plate (200) is provided with a second heat exchange channel (220), and the intermediate heat exchange plate (300) is provided with an intermediate heat exchange channel (310). The first heat exchange plate (100) is disposed above the intermediate heat exchange plate (300), and the second heat exchange plate (200) is disposed below the intermediate heat exchange plate (300); the first heat exchange plate (100) is provided with a flared portion (130), and the intermediate heat exchange channel (310) is connected to the first heat exchange channel (120) through the flared portion (130), and the cross-sectional area of ​​the flared portion (130) extends from one end connected to the first heat exchange channel (120) to the end connected to the intermediate heat exchange channel (310). One end of the expansion plate (200) is expanded, and the second heat exchange plate (200) is provided with a constriction portion (230). The intermediate heat exchange channel (310) is connected to the second heat exchange channel (220) through the constriction portion (230). The cross-sectional area of ​​the constriction portion (230) is constricted from the end connected to the second heat exchange channel (220) to the end connected to the intermediate heat exchange channel (310). Furthermore, the maximum cross-sectional area of ​​the expansion portion (130) is greater than the minimum cross-sectional area of ​​the constriction portion (230).

2. The battery heat exchange integrated structure according to claim 1, characterized in that, The liquid inlet end of the first heat exchange channel (120) and the liquid inlet end of the second heat exchange channel (220) are respectively connected to the liquid inlet end of the intermediate heat exchange channel (310), and the liquid outlet end of the first heat exchange channel (120) and the liquid outlet end of the second heat exchange channel (220) are respectively connected to the liquid outlet end of the intermediate heat exchange channel (310).

3. The battery heat exchange integrated structure according to claim 1, characterized in that, The maximum inner diameter a of the flared portion (130), the minimum inner diameter b of the flared portion (130), the maximum inner diameter c of the constricted portion (230), and the minimum inner diameter d of the constricted portion (230) satisfy the following condition: d <b<c<a。 4. The battery heat exchange integrated structure according to claim 2, characterized in that, The intermediate heat exchange plate (300) includes a first cover plate (320), a second cover plate (330), and a central main plate (340). The central main plate (340) is provided with a through groove (341) that runs through itself along the thickness direction. The first cover plate (320) and the second cover plate (330) are respectively covered on both sides of the central main plate (340) along the thickness direction and together with the through groove (341) form the intermediate heat exchange channel (310).

5. The battery heat exchange integrated structure according to claim 4, characterized in that, The connecting channel (341) includes an inlet collection channel (342) and an outlet collection channel (343), and the connecting channel (341) also includes a plurality of parallel distribution channels (344), which are respectively connected to the inlet collection channel (342) and the outlet collection channel (343).

6. The battery heat exchange integrated structure according to claim 1, characterized in that, It also includes an inlet manifold (400) and an outlet manifold (500), wherein the inlet manifold (400) is connected to the inlet end of the intermediate heat exchange plate (300), and the outlet manifold (500) is connected to the outlet end of the intermediate heat exchange plate (300).

7. The battery heat exchange integrated structure according to claim 1, characterized in that, Both the first heat exchange plate (100) and the second heat exchange plate (200) are arranged in a wavy, curved shape; Alternatively, both the first heat exchange plate (100) and the second heat exchange plate (200) may be arranged in a stepped bend.

8. The battery heat exchange integrated structure according to claim 1, characterized in that, The first heat exchange plate (100) and the second heat exchange plate (200) are respectively welded to both sides of the intermediate heat exchange plate (300); Alternatively, the first heat exchange plate (100) and the second heat exchange plate (200) are snapped together with the intermediate heat exchange plate (300); Alternatively, the first heat exchange plate (100) and the second heat exchange plate (200) are detachably connected to the intermediate heat exchange plate (300) by fasteners.

9. A thermal management system, characterized in that, It includes the battery heat exchange integrated structure as described in any one of claims 1-8.

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