Liquid cooling plate, battery pack box, battery system and vehicle

Abstract

The utility model discloses a liquid cooling panel, battery pack box, battery system and vehicle. Liquid cooling panel has the accommodation groove on one side in its thickness direction, the accommodation groove is used to install wire row part, to make the wire row part of first end located in the accommodation groove can be led to the second end of the accommodation groove through the accommodation groove. Wire row part can be placed in the accommodation groove of liquid cooling panel, thereby can improve the energy density of battery system, and avoid the interference of wire row part and other components. The heat generated by the wire row part can be directly transmitted to the liquid cooling panel for heat dissipation, improving the performance of the wire row part, thereby the cross-sectional size of the wire row part can be reduced, the purpose of weight reduction and cost reduction can be realized, and the practicability is better.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a liquid cooling plate, a battery pack housing, a battery system, and a vehicle. Background Technology

[0002] In related technologies, the high-voltage busbar and wiring harness of the battery system are fixed to the side wall of the battery pack housing and pass through from the front end to the rear end inside the battery pack housing. A certain space needs to be reserved between the battery module and the side wall of the battery pack housing so that the high-voltage busbar can pass through.

[0003] However, the high-voltage busbars and wiring harnesses encroach on the space inside the battery box, resulting in low volume utilization and low energy density of the battery system. At the same time, the crossbeams inside the battery box will also interfere with the high-voltage busbars and wiring harnesses, requiring clearance grooves to be opened on the crossbeams, which affects the structural strength of the battery box. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of this utility model propose a liquid cooling plate in which the busbar component can be placed in a receiving groove of the liquid cooling plate, thereby improving the energy density of the battery system and avoiding interference between the busbar component and other components.

[0006] An embodiment of this utility model proposes a battery pack housing.

[0007] An embodiment of this utility model proposes a battery system.

[0008] An embodiment of this utility model proposes a vehicle.

[0009] The liquid-cooled plate of this embodiment has a receiving groove on one side in its thickness direction. The receiving groove is used to install the cable tray component so that the cable tray component located at the first end of the receiving groove can be led through the receiving groove to the second end of the receiving groove.

[0010] This embodiment of the liquid-cooled plate, by providing a receiving groove on the liquid-cooled plate, allows the busbar components to be placed within the receiving groove. When the busbar components are led from one end of the liquid-cooled plate to the other, they do not occupy space within the battery pack housing. Therefore, there is no need to reserve space within the battery pack housing, allowing for the placement of more battery modules and increasing the energy density of the battery system. Simultaneously, the busbar components do not interfere with other components such as crossbeams in the battery pack housing, eliminating the need for clearance grooves or reinforcing ribs on the crossbeams, thus improving the structural stability of the battery pack housing and reducing the difficulty of manufacturing the battery pack housing. Because the busbar components are placed within the receiving groove of the liquid-cooled plate, the heat generated by the busbar components can be directly transferred to the liquid-cooled plate for heat dissipation, improving the performance of the busbar components. This allows for a reduction in the cross-sectional dimensions of the busbar components, achieving weight reduction and cost reduction, and improving practicality.

[0011] In some embodiments, the receiving groove is located on the side of the liquid cooling plate facing the battery module.

[0012] In some embodiments, the liquid cooling plate includes a flow channel plate and a heat spreader plate connected together, the heat spreader plate being located on one side of the flow channel plate adjacent to the battery module, and a portion of the heat spreader plate being bent toward a direction away from the battery module to form the receiving groove.

[0013] In some embodiments, the depth of the receiving groove is greater than or equal to the dimension of the busbar component in the thickness direction of the liquid cooling plate.

[0014] In some embodiments, the receiving groove includes a main body segment and a guide segment connected to each other. The main body segment extends along a first direction, and at least one end of the main body segment is connected to the guide segment. The guide segment is a straight line segment forming a preset angle with the main body segment, or the guide segment is an arc segment. The first direction is orthogonal to the thickness direction of the liquid cooling plate.

[0015] In some embodiments, the main body segment is arranged adjacent to one side of the liquid cooling plate in a second direction, wherein the second direction, the first direction, and the thickness direction of the liquid cooling plate are orthogonal to each other.

[0016] The battery pack housing of this utility model embodiment includes a liquid cooling plate as described in any of the above embodiments.

[0017] In some embodiments, the system further includes a frame comprising a plurality of side beams connected end to end in sequence, the liquid cooling plate being connected to the side beams to form a battery cavity, and the receiving groove being disposed corresponding to the battery cavity in the thickness direction of the liquid cooling plate.

[0018] In some embodiments, the battery pack housing further includes a connector, a cable assembly, and a plurality of crossbeams. The connector is disposed on the side beam, the cable assembly is connected to the connector, the crossbeams are connected to the side beams, and the plurality of crossbeams are arranged side by side in the battery cavity along a first direction. A portion of the cable assembly is disposed in the receiving groove and located on the side of the crossbeam.

[0019] The battery system of this utility model embodiment includes a battery module and a battery pack housing as described in any of the above claims, wherein the battery module is disposed within the battery pack housing.

[0020] The vehicle of this utility model embodiment includes a liquid cooling plate as described in any of the above claims, or a battery pack housing as described in any of the above claims, or a battery system as described above. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the liquid cooling plate according to an embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional schematic diagram of the liquid cooling plate according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram showing the connection between the liquid cooling plate, the cable tray component, and the connector in an embodiment of this utility model.

[0024] Figure 4 This is a cross-sectional schematic diagram of the battery pack housing according to an embodiment of the present invention.

[0025] Figure 5 yes Figure 4 Enlarged schematic diagram of part A in the middle.

[0026] Figure 6 This is a schematic diagram of the arrangement of the liquid cooling plate in the battery pack housing according to an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram showing the arrangement of connectors and cable trays in the battery pack housing according to an embodiment of this utility model.

[0028] Figure 8 This is an exploded view of the battery system according to an embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram showing the positions of the battery module and the liquid cooling plate in an embodiment of this utility model.

[0030] Figure 10 This is a schematic diagram showing the arrangement of the frame, crossbeam and connector at the end of the battery system according to an embodiment of the present invention.

[0031] Figure label: 1. Liquid cooling plate; 11. Receiving tank; 111. Main body section; 112. Guide section; 12. Flow channel plate; 13. Temperature distribution plate; 2. Cable tray components; 3. Frame; 31. Edge beam; 4. Crossbeam; 5. Connectors; 6. Battery module. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below, with examples of the embodiments shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] The inventors recognized that the high-voltage busbars and wiring harness battery systems in the related technologies are fixed to the side walls of the battery pack housing, encroaching on the arrangement space of the battery modules (the encroached space in the general width direction of the battery pack housing is greater than 8mm), resulting in low space utilization in the width direction of the battery pack housing and low energy density of the battery system. At the same time, there are multiple crossbeams arranged inside the battery pack housing, which are roughly cross-shaped with the high-voltage busbars and wiring harnesses. In order for the high-voltage busbars / wiring harnesses to pass through, clearance grooves need to be opened on the crossbeams. The clearance grooves weaken the mechanical strength of the battery pack housing. To compensate for this, local reinforcement is usually used, which increases the manufacturing difficulty and cost.

[0034] The inventors also recognized that when the high-voltage busbar and wiring harness are located at opposite ends of the battery pack housing, they need to be connected to the connectors on the battery pack housing. The ends of the battery pack housing in the longitudinal direction need to be bent before connecting to the connectors. In related technologies, the battery pack housing also needs to leave a certain bending space at the bending position to facilitate the passage of the high-voltage busbar or wiring harness, which further encroaches on the arrangement space of the battery module, resulting in low space utilization in the longitudinal direction of the battery pack housing. As a result, the space in multiple directions of the battery pack housing is occupied, leading to low battery system integration efficiency.

[0035] The inventors also recognized that the high-voltage busbars and wiring harnesses in the related technologies are connected to the side walls of the battery pack housing by means of fasteners, fasteners, straps, and other structures, which results in cumbersome assembly process steps and poor stability. In the PACK production line, it is necessary to fix the high-voltage busbars to the inner wall of the housing by means of structural components, which increases the number of processes in the PACK production line.

[0036] The inventors also recognized that the heat dissipation method of the high-voltage busbars and wire harnesses in the related technologies is natural heat dissipation. The high-voltage busbars and wire harnesses dissipate heat through thermal radiation with the surrounding air, which has a poor heat dissipation effect. In order to meet the overcurrent temperature rise requirements, the cross-sectional dimensions of the high-voltage busbars and wire harnesses are designed to be large, which is not conducive to cost reduction and weight reduction. When heat dissipation cannot be completed in time, it affects the working performance and service life of the high-voltage busbars and wire harnesses.

[0037] For this reason, see Figures 1 to 10 This utility model provides a liquid cooling plate, a battery pack housing, a battery system, and a vehicle.

[0038] See Figures 1 to 7 The liquid cooling plate 1 of this utility model embodiment has a receiving groove 11 on one side in the thickness direction. The receiving groove 11 is used to install the busbar component 2 so that the busbar component 2 located at the first end of the receiving groove 11 can be led to the second end of the receiving groove 11. The busbar component 2 of this embodiment may include a high voltage busbar and / or a wire harness.

[0039] It is understood that one side of the liquid cooling plate 1 in the thickness direction is recessed to form a receiving groove 11, and the wire assembly 2 can be arranged in the receiving groove 11. Thus, the wire assembly 2 can be hidden in the receiving groove 11. When the liquid cooling plate 1 is installed in the battery pack box, it will not occupy the installation space in the battery pack box used to arrange the battery module 6. Moreover, even if the crossbeam 4 in the battery pack box abuts against the surface of the liquid cooling plate 1, it will not interfere with the crossbeam 4 in the battery pack box.

[0040] In this embodiment of the utility model, the liquid cooling plate 1 has a receiving groove 11, which allows the wire harness component 2 to be placed inside the receiving groove 11. When the wire harness component 2 is led from one end of the liquid cooling plate 1 to the other end, it does not occupy space inside the battery pack box. Therefore, there is no need to reserve space inside the battery pack box, which allows for the arrangement of more battery modules 6 and improves the energy density of the battery system. At the same time, the wire harness component 2 will not interfere with other components such as the crossbeam 4 in the battery pack box. There is no need to open a clearance groove on the crossbeam 4 or to arrange reinforcing ribs on the crossbeam 4, which improves the structural stability of the battery pack box and reduces the processing and manufacturing difficulty of the battery pack box.

[0041] The liquid cooling plate 1 has a flow channel through which a cooling medium can be introduced. When the cooling medium flows through the liquid cooling plate 1, it can cool down the battery module 6. Since the wire assembly 2 is placed in the receiving groove 11 of the liquid cooling plate 1, the heat generated by the wire assembly 2 can be directly transferred to the liquid cooling plate 1 for heat dissipation, which improves the performance of the wire assembly 2. As a result, the cross-sectional size of the wire assembly 2 can be reduced, which can achieve the purpose of weight reduction and cost reduction, and has better practicality.

[0042] The cable assembly 2 can be bonded to the receiving groove 11 with adhesive, or it can be snapped into the receiving groove 11 by a buckle set in the receiving groove 11, or the cable assembly 2 can be pressed into the receiving groove 11 by components such as the crossbeam 4 and the battery module 6 located at the opening of the receiving groove 11.

[0043] The busbar component 2 is attached to the bottom of the receiving tank 11, which facilitates heat transfer. When the busbar component 2 is bonded to the receiving tank 11 with adhesive, the adhesive can have both heat conduction and bonding functions, which facilitates the transfer of heat from the busbar component 2 to the cooling medium in the liquid cooling plate 1.

[0044] In some embodiments, the receiving groove 11 is provided on the side of the liquid cooling plate 1 facing the battery module 6, thereby allowing the receiving groove 11 to be arranged adjacent to the inner cavity of the battery pack housing, so that the cable strip component 2 can be located in the inner cavity of the battery pack housing without occupying the installation space of the battery module 6, and the cable strip component 2 has better safety stability and better protection performance.

[0045] See Figure 2 In some embodiments, the liquid cooling plate 1 includes a flow channel plate 12 and a heat spreader plate 13 connected together. The heat spreader plate 13 is located on the side of the flow channel plate 12 adjacent to the battery module 6. A portion of the heat spreader plate 13 is bent away from the battery module 6 to form a receiving groove 11. The heat spreader plate 13 and the flow channel plate 12 are connected to form a flow channel, which can be a serpentine flow channel. The heat spreader plate 13 is used to fit against the battery module 6, thereby quickly and evenly transferring the heat of the battery module 6 to the cooling medium in the flow channel, resulting in high heat exchange efficiency.

[0046] The liquid cooling plate 1 is composed of a heat spreader plate 13 and a flow channel plate 12, which are joined by welding / bonding or other methods. The heat spreader plate 13 is generally flat, and the receiving groove 11 can be formed by stamping and bending a portion of the heat spreader plate 13 in the direction away from the battery module 6. The high-voltage busbar or wire harness is fixed to the receiving groove 11. Since multiple flow channel grooves are stamped on the flow channel plate 12, and a portion of the flow channel plate 12 is connected to the heat spreader plate 13, a flow channel is constructed between the flow channel grooves of the flow channel plate 12 and the heat spreader plate 13. Therefore, the receiving groove 11 on the heat spreader plate 13 can match the corresponding flow channel grooves on the flow channel plate 12, so that the receiving groove 11 can be set without changing the original structure of the flow channel plate 12 and without interfering with the flow channel plate 12.

[0047] During manufacturing, the receiving groove 11 can be formed by bending the heat spreader plate 13, which is convenient, quick and easy to manufacture and has low cost. After the heat spreader plate 13 is connected to the flow channel plate 12, the receiving groove 11 can be arranged in a roughly parallel manner with the flow channel. The structure of the receiving groove 11 can be added without changing the original structure of the liquid cooling plate 1, which improves versatility, reduces the adjustment range of the liquid cooling plate 1 structure and makes it more practical.

[0048] See Figure 6In some embodiments, the depth of the receiving groove 11 is greater than or equal to the dimension of the busbar component 2 in the thickness direction of the liquid cooling plate 1. After the busbar component 2 is placed in the receiving groove 11, it can be bonded to the receiving groove 11 with adhesive. The busbar component 2 does not extend beyond the opening of the receiving groove 11, thereby preventing the battery module 6 from squeezing and deforming the busbar component 2 during battery module 6 placement. Of course, thermally conductive adhesive can be provided between the battery module 6 and the busbar component 2, so that some of the heat from the battery module 6 corresponding to the busbar component 2 can first be transferred to the busbar component 2, and then transferred to the liquid cooling plate 1 through the busbar component 2, ensuring the cooling effect of the battery module 6.

[0049] When processing and manufacturing the liquid cooling plate 1, the wire assembly component 2 can be simultaneously fixed into the receiving groove 11 of the liquid cooling plate 1, which facilitates the subsequent assembly and installation of the battery pack housing, optimizes the PACK production line process, and improves the production efficiency of the PACK production line.

[0050] See Figure 1 In some embodiments, the receiving groove 11 includes a main body segment 111 and a guide segment 112 connected to each other. The main body segment 111 extends along a first direction, and at least one end of the main body segment 111 is connected to the guide segment 112. The guide segment 112 is a straight line segment that forms a preset angle with the main body segment 111, or the guide segment 112 is an arc segment. The first direction is orthogonal to the thickness direction of the liquid cooling plate 1.

[0051] After the liquid cooling plate 1 is assembled, the first direction can be the general front-to-back direction shown in the figure, and the thickness direction of the liquid cooling plate 1 is the general up-down direction shown in the figure. When the cable assembly 2 needs to be led from the front end to the rear end of the liquid cooling plate 1, most of the section of the cable assembly 2 is located in the main body section 111. The cable assembly 2 adjacent to the front end and the rear end of the liquid cooling plate 1 is guided by the guide section 112 and extends to the position near the connector 5 of the battery pack housing, and then avoids components that may interfere with the cable assembly 2, so that the cable assembly 2 located outside the receiving groove 11 can be connected to the connector 5.

[0052] In this embodiment, the guide segment 112 can be a straight segment or an arc segment. The connection between the guide segment 112 and the straight segment is a rounded transition, which facilitates the bending and reversal of the wire assembly 2. When the guide segment 112 is a straight segment, the preset angle between the guide segment 112 and the main body segment 111 is usually greater than 90 degrees. Preferably, the preset angle can be 100 degrees, 120 degrees, 135 degrees, 138 degrees, 160 degrees, etc. While ensuring that the end of the wire assembly 2 is close to the connector 5 and can be effectively connected to the connector 5 and avoid interference with other components, the preset angle can be as close as possible to 180 degrees to reduce the bending and reversal angle of the wire assembly 2. When the guide segment 112 is an arc segment, the guide segment 112 can be arc-shaped, and in this case, the guide segment 112 can be tangent to the main body segment 111.

[0053] In this embodiment, the guide segment 112 is used to guide the wire strip component 2 at the front-rear end of the adjacent liquid cooling plate 1 to extend toward the connector 5, and avoid other components at the front and rear ends of the adjacent liquid cooling plate 1, so that the arrangement of the wire strip component 2 is more reasonable, the positional relationship of each component in the battery pack box is optimized, and the volume integration efficiency of the battery system is improved.

[0054] See Figures 1 to 4 Furthermore, the main body segment 111 is arranged adjacent to one side of the liquid cooling plate 1 in the second direction, and the second direction, the first direction, and the thickness direction of the liquid cooling plate 1 are orthogonal to each other. The second direction is roughly the left-right direction shown in the figure. Placing the main body segment 111 on one side of the liquid cooling plate 1 in the second direction can reduce the impact of the receiving tank 11 on the original structure of the liquid cooling plate 1 and avoid problems such as increased flow resistance of the cooling medium in the flow channels within the liquid cooling plate 1 due to the arrangement of the receiving tank 11.

[0055] It is understood that the first direction in this embodiment can be the length direction of the liquid cooling plate 1, and the second direction can be the thickness direction of the liquid cooling plate 1.

[0056] See Figures 4 to 7 The battery pack housing of this embodiment includes a liquid cooling plate 1 as described in any of the above embodiments. The beneficial effects achieved by the battery pack housing of this embodiment are the same as those achieved by the liquid cooling plate 1 in the above embodiments, and therefore will not be described again.

[0057] See Figure 4 In some embodiments, the battery pack housing further includes a frame 3, which includes multiple side beams 31 connected end to end in sequence. The liquid cooling plate 1 is connected to the side beams 31 to form a battery cavity. The receiving groove 11 is correspondingly arranged with the battery cavity in the thickness direction of the liquid cooling plate 1. The circumferential edge of the liquid cooling plate 1 and the side beams 31 can be connected together by connectors, fasteners, or fixings. At this time, the receiving groove 11 corresponds to and is connected to the battery cavity in the vertical direction. In other words, the receiving groove 11 is located inside the frame 3 so that after the battery module 6 is assembled into the battery cavity, the wiring harness component 2 can be hidden between the battery module 6 and the liquid cooling plate 1, making the structure more stable and preventing the wiring harness component 2 from being affected by external factors. In this embodiment, the frame 3 can be integrated together by a combination of profiles, sheet metal, or composite materials through welding, riveting, or bonding. The liquid cooling plate 1 is fixed to the bottom of the frame 3. Protective structures such as protective plates and protective frames 3 can also be provided at the lower part of the liquid cooling plate 1.

[0058] See Figure 4 and Figure 7In some embodiments, the battery pack housing further includes a connector 5, a cable assembly 2, and multiple crossbeams 4. The connector 5 is located on the side beam 31, the cable assembly 2 is connected to the connector 5, and the crossbeams 4 are connected to the side beam 31. The multiple crossbeams 4 are arranged side by side in the battery cavity along a first direction. A portion of the cable assembly 2 is located in the receiving groove 11 and on the side of the crossbeam 4. Specifically, the connector 5 is located at the end of the cable assembly 2 in the front-rear direction. The cable assembly 2 is arranged in a generally front-rear direction, and most of the section of the cable assembly 2 is placed in the receiving groove 11 and located on the lower side of the crossbeam 4. Thus, the crossbeam 4 and the cable assembly 2 will not interfere with each other and will not affect the performance of the support structure of the battery pack housing. After the end of the cable assembly 2 is led out from the receiving groove 11, it is adjacent to the corresponding connector 5, and there are no other components around it that interfere with the cable assembly 2, so that the cable assembly 2 and the connector 5 can be smoothly connected together.

[0059] The outer surface of the busbar component 2 has an insulating protective layer. A thermally conductive adhesive material is applied to the insulating protective layer on the side wall near the receiving groove 11. This thermally conductive adhesive material possesses both thermal conductivity and sufficient bonding strength. The thermally conductive adhesive material is placed between the busbar component 2 and the side wall of the receiving groove 11, bonding and fixing the high-voltage busbar to the liquid cooling plate 1. When the high-voltage busbar or wiring harness is energized, heat is generated. This heat is conducted to the liquid cooling plate 1 through the thermally conductive adhesive material, thereby achieving rapid and effective cooling, reducing the temperature rise of the high-voltage busbar, and reducing weight and cost.

[0060] This embodiment, through the arrangement of the receiving slot 11, makes the spatial relationship between the connector 5, crossbeam 4, and battery module 6 in the battery pack housing more rational, resulting in higher space utilization. It enables high integration of the high-voltage busbar and wiring harness with the battery pack housing, improving the space utilization of the battery system in both the first and second directions. It also avoids the need for clearance slots on components such as the crossbeam 4, improving the structural strength of the battery pack housing and thus enhancing safety. Simultaneously, it reduces the weight of the high-voltage busbar, wiring harness, and housing, thereby improving the integration efficiency of the battery system.

[0061] See Figures 8 to 10 The battery system of this embodiment includes a battery module 6 and a battery pack housing as described above, with the battery module 6 disposed within the battery pack housing. The battery module 6 can be placed above the liquid cooling plate 1, and thermally conductive adhesive / structural adhesive / thermally conductive structural adhesive, etc., are disposed between the liquid cooling plate 1 and the battery module 6 to improve thermal conductivity. In the battery system of this embodiment, the arrangement of the busbar component 2 is more reasonable, the space utilization rate in the inner cavity of the battery pack housing is higher, the energy density of the battery system is improved, and the heat dissipation performance of the busbar component 2 is good, which can achieve weight reduction and cost reduction of the busbar component 2.

[0062] The battery system of this utility model embodiment is a highly integrated power battery system. In the battery pack housing production process, the high voltage busbar / wire harness (i.e., wire harness component) is fixed to the receiving groove of the liquid cooling plate by adhesive or other means; the freed Y and X directions (generally the front-back and left-right directions shown in the figure) space can accommodate more battery cells, thereby improving the volume integration efficiency of the battery system.

[0063] Specifically, the battery system includes a battery pack housing, a liquid cooling plate, battery modules, high-voltage busbars / wiring harnesses, and connectors. The frame of the battery pack housing is integrated together using profiles, sheet metal, or composite materials through welding, riveting, bonding, or other methods or combinations. The liquid cooling plate is fixed to the bottom of the housing frame. It is composed of a heat spreader plate and a flow channel plate through welding, bonding, or other methods. Receiving grooves are stamped out on the heat spreader plate and / or the high-voltage busbars or wiring harnesses are fixed to the receiving grooves. The battery modules are placed on top of the liquid cooling plate, and thermally conductive adhesive materials such as thermally conductive adhesive / structural adhesive / thermally conductive structural adhesive are placed between the liquid cooling plate and the battery modules. The outer surface of the high-voltage busbar is an insulating protective layer, and thermally conductive adhesive materials are placed on the insulating protective layer on the side wall of the inner cavity of the battery pack housing.

[0064] The thermally conductive adhesive material has both thermal conductivity and sufficient bonding strength. It is placed between the high-voltage busbar and the liquid cooling plate's receiving groove to bond and fix the high-voltage busbar to the receiving groove. When the high-voltage busbar is energized, it generates heat, which is conducted to the liquid cooling plate through the thermally conductive adhesive material, thereby reducing the temperature rise of the high-voltage busbar.

[0065] The battery system of this embodiment achieves a high degree of integration between the high-voltage busbar and the battery housing. The battery system eliminates the installation space for the high-voltage busbar or wiring harness, improving the volume utilization rate of the battery system and increasing the space utilization rate in both the X and Y directions. It also improves the structural strength of the battery pack housing, thereby enhancing safety. The high-voltage busbar conducts heat to the liquid cooling plate, reducing the overcurrent temperature rise of the high-voltage busbar and thus reducing its overcurrent area. Ultimately, this achieves weight and cost reduction for the high-voltage busbar, lowering the weight of both the high-voltage busbar and the housing, and improving the integration efficiency of the battery system. Furthermore, it reduces the installation of high-voltage busbars and fasteners on the PACK production line, improving production efficiency.

[0066] The vehicle of this embodiment includes a liquid cooling plate 1 as described above, a battery pack housing as described above, or a battery system as described above. The beneficial effects obtained by the vehicle of this embodiment are the same as those obtained by the liquid cooling plate 1, battery pack housing, or battery system in the above embodiments, and therefore will not be described again.

[0067] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0068] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this utility model, unless otherwise explicitly 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0070] In this utility model, unless otherwise explicitly 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.

[0071] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A liquid-cooled plate, characterized in that, The liquid cooling plate has a receiving groove on one side in its thickness direction. The receiving groove is used to install the cable tray component so that the cable tray component located at the first end of the receiving groove can be led through the receiving groove to the second end of the receiving groove.

2. The liquid cooling plate according to claim 1, characterized in that, The receiving groove is located on the side of the liquid cooling plate facing the battery module.

3. The liquid cooling plate according to claim 2, characterized in that, The liquid cooling plate includes a flow channel plate and a heat spreader plate connected to each other. The heat spreader plate is located on the side of the flow channel plate adjacent to the battery module. A portion of the heat spreader plate is bent in a direction away from the battery module to form the receiving groove.

4. The liquid-cooled plate according to any one of claims 1 to 3, characterized in that, The depth of the receiving groove is greater than or equal to the dimension of the busbar component in the thickness direction of the liquid cooling plate.

5. The liquid-cooled plate according to any one of claims 1 to 3, characterized in that, The receiving groove includes a main body section and a guide section connected to each other. The main body section extends along a first direction, and at least one end of the main body section is connected to the guide section. The guide section is a straight line segment that forms a preset angle with the main body section, or the guide section is an arc segment. The first direction is orthogonal to the thickness direction of the liquid cooling plate.

6. The liquid cooling plate according to claim 5, characterized in that, The main body segment is arranged adjacent to one side of the liquid cooling plate in the second direction, and the second direction, the first direction and the thickness direction of the liquid cooling plate are orthogonal to each other.

7. A battery pack housing, characterized in that, Includes the liquid cooling plate as described in any one of claims 1 to 6.

8. The battery pack housing according to claim 7, characterized in that, It also includes a frame, which includes a plurality of side beams connected end to end in sequence. The liquid cooling plate is connected to the side beams to form a battery cavity. The receiving groove and the battery cavity are arranged correspondingly in the thickness direction of the liquid cooling plate.

9. The battery pack housing according to claim 8, characterized in that, The battery pack housing also includes a connector, a cable assembly, and multiple crossbeams. The connector is located on the side beam, the cable assembly is connected to the connector, and the crossbeams are connected to the side beams. The multiple crossbeams are arranged side by side in the battery cavity along a first direction, and a portion of the cable assembly is located in the receiving groove and on the side of the crossbeam.

10. A battery system, characterized in that, It includes a battery module and a battery pack housing as described in any one of claims 7 to 9, wherein the battery module is disposed within the battery pack housing.

11. A vehicle, characterized in that, It includes the liquid cooling plate as described in any one of claims 1 to 6, the battery pack housing as described in any one of claims 7 to 9, or the battery system as described in claim 10.

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