Liquid cooling plate assembly, liquid cooling assembly, energy storage equipment and vehicle

Abstract

The utility model provides a liquid cooling plate assembly, a liquid cooling assembly, energy storage equipment and a vehicle. The liquid cooling plate assembly comprises a liquid cooling plate, a first connector part and a second connector part, the liquid cooling plate is provided with a liquid inlet and a liquid outlet, the first connector part and the second connector part are arranged on the liquid cooling plate and are bent, the first connector part comprises a first connecting section and a first inserting section which are connected with each other, and the second connector part comprises a second connecting section and a second inserting section which are connected with each other. The first connector part comprises a first connecting section and a first inserting section which are connected with each other, the second connector part comprises a second connecting section and a second inserting section which are connected with each other, the first connecting section and the second connecting section extend in the thickness direction of the liquid cooling plate, and the first inserting section and the second inserting section extend in the length or width direction of the liquid cooling plate. Therefore, the pipeline can be connected with the first plug-in section and the second plug-in section without being bent, the requirement for the installation space is reduced, it is ensured that the space for arranging the battery pack in the thickness direction of the liquid cooling plate is enough, and the energy density of energy storage equipment is prevented from being reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a liquid cooling plate assembly, a liquid cooling assembly, an energy storage device and a vehicle. Background Art

[0002] With technological advancements, battery packs within energy storage devices are becoming larger and larger, and the number of stacked battery packs is increasing. As commercial vehicles transition to electric drive, three- and even four-layer stacked battery packs are already appearing. Currently, stacked battery packs are typically cooled using bent pipe sections connected to interfaces extending through the thickness of the liquid cooling plates. This connection method results in a larger bending radius for the pipes between adjacent liquid cooling plates, reducing the space available for battery packs through the thickness of the liquid cooling plates and lowering the energy density of the energy storage device. Utility Model Content

[0003] Embodiments of the present utility model provide a liquid cooling plate assembly, a liquid cooling assembly, an energy storage device, and a vehicle, which can improve the problem in the related art that the bending radius of the pipeline between two adjacent liquid cooling plates is large, resulting in a reduction in the space for arranging the battery pack in the thickness direction of the liquid cooling plate, thereby reducing the energy density of the energy storage device.

[0004] In a first aspect, an embodiment of the present invention provides a liquid cooling assembly.

[0005] In one embodiment, the liquid cooling plate assembly includes

[0006] a liquid cooling plate having a liquid inlet and a liquid outlet;

[0007] a first joint portion, provided on the liquid cooling plate and arranged in a curved manner, comprising a first connecting section and a first plug-in section connected to each other, the first connecting section extending along the thickness direction of the liquid cooling plate, an end of the first connecting section away from the first plug-in section being connected to the liquid inlet, and the first plug-in section extending along the length or width direction of the liquid cooling plate;

[0008] The second joint portion is provided on the liquid cooling plate and is curved. The second joint portion includes a second connecting section and a second plug-in section connected to each other. The second connecting section extends along the thickness direction of the liquid cooling plate. One end of the second connecting section away from the second plug-in section is connected to the liquid outlet. The second plug-in section extends along the length or width direction of the liquid cooling plate.

[0009] In one embodiment, the end of the first connecting section away from the first plug section is welded and fixed to the liquid cooling plate; and / or,

[0010] One end of the second connecting section away from the second plug-in section is welded and fixed to the liquid cooling plate.

[0011] In one embodiment, the length of the first plug section is L1, wherein 25 mm ≤ L1 ≤ 60 mm; and / or,

[0012] The length of the second plug-in section is L2, wherein 25 mm ≤ L2 ≤ 60 mm.

[0013] In one embodiment, the length of the first connecting section is L3, wherein 35 mm ≤ L3 ≤ 60 mm; and / or,

[0014] The length of the second connecting section is L4, wherein 35 mm ≤ L4 ≤ 60 mm.

[0015] In a second aspect, an embodiment of the present invention provides a liquid cooling assembly.

[0016] In one embodiment, the liquid cooling assembly comprises:

[0017] A plurality of liquid cooling plate assemblies as described above, wherein the plurality of liquid cooling plate assemblies are arranged at intervals along the thickness direction of the liquid cooling plate;

[0018] a liquid inlet pipeline having a first delivery inlet and a plurality of first delivery outlets, wherein the first delivery inlet is used to be connected to the liquid cooling system, and the plurality of first delivery outlets are connected to the plurality of first plug-in sections;

[0019] The liquid return pipeline has a second liquid return inlet and multiple second liquid return outlets, the second liquid return inlet is used to be connected to the liquid cooling system, and the multiple second liquid return outlets are connected to multiple second plug-in sections.

[0020] In one embodiment, the liquid inlet pipeline includes:

[0021] A plurality of liquid inlet branch pipes, each of which is provided between two adjacent liquid cooling plate assemblies, wherein both ends of each liquid inlet branch pipe are respectively connected to the first plug-in sections of two adjacent liquid cooling plate assemblies, and the two adjacent liquid inlet branch pipes are connected to each other, and each liquid inlet branch pipe is formed with the first delivery outlet;

[0022] A liquid inlet main line, one end of which forms the first delivery inlet, and the other end of which is connected to one of the plurality of liquid inlet branch lines.

[0023] In one embodiment, the first plug-in section of each of the liquid cooling plate assemblies is plugged into and fitted with a first plug connector, and the first plug connector has at least two first plug-in tubes, one of at least two first plug-in tubes is plugged into and fitted with the first delivery outlet of the corresponding liquid inlet branch pipe, and the other of at least two first plug-in tubes is plugged into and fitted with the other end of the liquid inlet branch pipe and / or the liquid inlet main pipe of another liquid cooling plate assembly.

[0024] In one embodiment, the liquid return line comprises:

[0025] A plurality of liquid return branch pipes, each of which is provided between two adjacent liquid cooling plate assemblies, wherein both ends of each liquid return branch pipe are respectively connected to the second plug-in sections of two adjacent liquid cooling plate assemblies, and the two adjacent liquid return branch pipes are connected to each other, and each liquid return branch pipe is formed with the second liquid return outlet;

[0026] A liquid return main line, one end of which forms the second liquid return inlet, and the other end of which is connected to one of the plurality of liquid return branch lines.

[0027] In one embodiment, the second plug-in section of each of the liquid cooling plate assemblies is plugged into and fitted with a second plug connector, and the second plug connector has at least two second plug tubes, one of at least two second plug tubes is plugged into and fitted with the second liquid return outlet of the corresponding liquid return branch line, and the other of at least two second plug tubes is plugged into and fitted with the other end of the liquid return branch line and / or the liquid return main line of another liquid cooling plate assembly.

[0028] In a third aspect, an embodiment of the present invention provides an energy storage device.

[0029] In one embodiment, the energy storage device includes:

[0030] The liquid cooling assembly as described above;

[0031] A plurality of battery packs are installed between two adjacent liquid cooling plate assemblies.

[0032] In one embodiment, the battery pack further comprises a housing, wherein the housing is formed with a receiving cavity, wherein the plurality of battery packs and the plurality of liquid cooling plate assemblies are installed in the receiving cavity, and the housing is provided with a plurality of first through-holes, wherein the plurality of first through-holes are all in communication with the receiving cavity;

[0033] A portion of the liquid inlet pipeline is located outside the shell, and another portion of the liquid inlet pipeline is suitable for passing through a plurality of the first penetration holes and being connected to a plurality of the first plug-in sections.

[0034] In one embodiment, the housing is provided with a plurality of second through-holes, and the plurality of second through-holes are all communicated with the accommodating cavity;

[0035] A portion of the liquid return pipeline is located outside the shell, and another portion of the liquid return pipeline is suitable for passing through a plurality of second penetration holes and connected to a plurality of second plug-in sections.

[0036] In one embodiment, the first plug-in section is located in the accommodating cavity, and a first avoidance gap is provided between the other end of the first plug-in section and the inner side wall of the housing; and / or,

[0037] The second plug-in section is located in the accommodating cavity, and a second avoidance gap is provided between the other end of the second plug-in section and the inner side wall of the shell.

[0038] In a fourth aspect, an embodiment of the present invention provides a vehicle, comprising the energy storage device as described above.

[0039] In an embodiment of the present invention, the design of the liquid inlet and outlet ensures that coolant can smoothly enter and exit the liquid cooling plate, thereby improving heat exchange efficiency. The first connecting section extends along the thickness of the liquid cooling plate so that the first connecting section is arranged perpendicular to the liquid cooling plate. In this way, the vertical connection reduces the occurrence of eddies and turbulence, and the energy loss of the fluid when entering the liquid cooling plate is also reduced. This means that more energy is retained in the fluid, which is used to promote the flow of the fluid within the liquid cooling plate and heat exchange with the heat source, thereby improving heat exchange efficiency. The first plug-in section extends along the length or width of the liquid cooling plate so that the first plug-in section is parallel to the liquid cooling plate. In this way, the pipe can be connected to the first plug-in section without bending, which is more convenient to operate and reduces the installation space requirements, ensuring sufficient space for arranging the battery pack in the thickness direction of the liquid cooling plate, and avoiding a reduction in the energy density of the energy storage device. The second connecting section extends along the thickness of the liquid cooling plate so that the second connecting section is arranged perpendicular to the liquid cooling plate. In this way, the vertical connection reduces the occurrence of eddies and turbulence, and the energy loss of the fluid when entering the liquid cooling plate is also reduced. This means that more energy is retained in the fluid, which is used to promote the flow of the fluid in the liquid cooling plate and to exchange heat with the heat source, thereby improving the efficiency of heat exchange. The second plug-in section is extended along the length or width direction of the liquid cooling plate so that the second plug-in section is parallel to the liquid cooling plate. In this way, the pipeline can be connected to the second plug-in section without bending, which makes the operation more convenient and reduces the installation space requirements, ensuring that there is enough space in the thickness direction of the liquid cooling plate for arranging the battery pack, thereby avoiding a decrease in the energy density of the energy storage device. In addition, when the liquid cooling plate needs to be connected to the pipeline, the first joint part and the second joint part are both bent, which can also reduce the number of joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 This is a schematic structural diagram of a liquid cooling plate assembly provided by an embodiment of the present utility model;

[0042] Figure 2 It is a structural schematic diagram of a liquid cooling assembly provided by an embodiment of the present utility model;

[0043] Figure 3 yes Figure 2 A perspective schematic diagram of the liquid cooling assembly shown;

[0044] Figure 4 It is a structural diagram of the energy storage device provided by an embodiment of the present utility model;

[0045] Figure 5 yes Figure 4 A schematic cross-sectional view of the energy storage device shown (at one angle);

[0046] Figure 6 yes Figure 5 A local enlarged schematic diagram shown;

[0047] Figure 7 yes Figure 4 A schematic cross-sectional view of the energy storage device shown (from another angle);

[0048] Figure 8 yes Figure 7 The schematic diagram of the local enlargement of point B is shown.

[0049] Description of reference numerals:

[0050] 10. Liquid cooling plate assembly;

[0051] 1. Liquid cooling plate,

[0052] 2. First joint portion, 21. First connecting section, 22. First plug section;

[0053] 3. Second joint portion, 31. Second connecting section, 32. Second plug-in section;

[0054] 100. Liquid cooling components;

[0055] 20, liquid inlet pipeline, 203, liquid inlet branch pipeline, 204, liquid inlet main pipeline;

[0056] 30, liquid return line, 303, liquid return branch line, 304, liquid return main line;

[0057] 40. First plug connector, 401. First plug tube;

[0058] 50, second plug connector, 501, second plug tube;

[0059] 1000. Energy storage equipment;

[0060] 300, shell, 3001, accommodating cavity, 3002, first through-hole, 3003, second through-hole. DETAILED DESCRIPTION

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0062] With technological advancements, battery packs within energy storage devices are becoming larger and larger, and the number of stacked battery packs is increasing. As commercial vehicles transition to electric drive, three- and even four-layer stacked battery packs are already appearing. Currently, stacked battery packs are typically cooled using bent pipe sections connected to interfaces extending through the thickness of the liquid cooling plates. This connection method results in a larger bending radius for the pipes between adjacent liquid cooling plates, reducing the space available for battery packs through the thickness of the liquid cooling plates and lowering the energy density of the energy storage device.

[0063] In view of this, the present invention proposes a liquid cooling plate assembly. This assembly ensures sufficient space for arranging battery packs along the thickness of the cooling plate, thus preventing a reduction in the energy density of the energy storage device. The following describes the liquid cooling plate assembly in detail, with reference to the main figures.

[0064] Reference Figure 1 , Figure 1The figure is a schematic structural diagram of a liquid cooling plate assembly provided by an embodiment of the present invention. The liquid cooling plate assembly 10 includes a liquid cooling plate 1, a first joint portion 2, and a second joint portion 3. The liquid cooling plate 1 has a liquid inlet and a liquid outlet. The first joint portion 2 is provided on the liquid cooling plate 1 and is curved. The first joint portion 2 includes a first connecting section 21 and a first plug-in section 22 connected to each other. The first connecting section 21 extends along the thickness direction of the liquid cooling plate 1. One end of the first connecting section 21 away from the first plug-in section 22 is connected to the liquid inlet. The first plug-in section 22 extends along the length or width direction of the liquid cooling plate 1. The second joint portion 3 is provided on the liquid cooling plate 1 and is curved. The second joint portion 3 includes a second connecting section 31 and a second plug-in section 32 connected to each other. The second connecting section 31 extends along the thickness direction of the liquid cooling plate 1. One end of the second connecting section 31 away from the second plug-in section 32 is connected to the liquid outlet. The second plug-in section 32 extends along the length or width direction of the liquid cooling plate 1.

[0065] In an embodiment of the present invention, the design of the liquid inlet and the liquid outlet ensures that the coolant can smoothly enter and leave the liquid cooling plate 1, thereby improving the heat exchange efficiency. The first connecting section 21 is extended along the thickness direction of the liquid cooling plate 1 so that the first connecting section 21 is arranged perpendicular to the liquid cooling plate 1. In this way, since the vertical connection reduces the occurrence of eddies and turbulence, the energy loss of the fluid when entering the liquid cooling plate 1 is also reduced. This means that more energy is retained in the fluid, which is used to promote the flow of the fluid in the liquid cooling plate 1 and to exchange heat with the heat source, thereby improving the efficiency of heat exchange. The first plug-in section 22 is extended along the length or width direction of the liquid cooling plate 1 so that the first plug-in section 22 is parallel to the liquid cooling plate 1. In this way, the pipe does not need to be bent to be connected to the first plug-in section 22, which is more convenient to operate and reduces the installation space requirements, ensuring that there is sufficient space for arranging the battery pack in the thickness direction of the liquid cooling plate, thereby avoiding a reduction in the energy density of the energy storage device. The second connecting section 31 is extended along the thickness direction of the liquid cooling plate 1 so that the second connecting section 31 is arranged perpendicular to the liquid cooling plate 1. In this way, since the vertical connection reduces the occurrence of eddies and turbulence, the energy loss of the fluid when entering the liquid cooling plate 1 is also reduced. This means that more energy is retained in the fluid, which is used to promote the flow of the fluid in the liquid cooling plate 1 and to exchange heat with the heat source, thereby improving the efficiency of heat exchange. The second plug-in section 32 is extended along the length or width direction of the liquid cooling plate 1 so that the second plug-in section 32 is parallel to the liquid cooling plate 1. In this way, the pipeline does not need to be bent to be connected to the second plug-in section 32, which makes operation more convenient and reduces the installation space requirements, ensuring that there is sufficient space in the thickness direction of the liquid cooling plate for arranging the battery pack, thereby avoiding a reduction in the energy density of the energy storage device. In addition, when the liquid cooling plate 1 needs to be connected to the pipeline, the first joint part 2 and the second joint part 3 are both bent, which can also reduce the number of joints.

[0066] It should be noted that the first and second joints 2 and 3 are machined 90-degree nozzles. Furthermore, the liquid cooling plate 1 comprises an extruded cold plate. Of course, in other embodiments, the types of the first and second joints 2 and 3, as well as the liquid cooling plate 1, can be selected as needed and are not limited in this application.

[0067] Reference Figure 1 In one embodiment, the end of the first connecting section 21 away from the first plug-in section 22 is welded to the liquid cooling plate 1. This welding ensures the stability of the connection between the first connecting section 21 and the liquid cooling plate 1, preventing loosening of the first connecting section 21 due to vibration or other external forces. Welding the end of the first connecting section 21 away from the first plug-in section 22 to the liquid cooling plate 1 ensures a good sealing effect between the first connecting section 21 and the liquid cooling plate 1, preventing coolant leakage. Welding allows direct metal-to-metal contact, helping to improve heat conduction efficiency and thus better transfer heat from the heat source to the cooling medium. Using welding can reduce the need for additional fasteners during installation, thereby simplifying the assembly process. Reducing the use of fasteners can also reduce material costs and assembly labor costs. Welding can increase the overall strength of the connection between the first connecting section 21 and the liquid cooling plate 1, making the entire liquid cooling plate assembly 10 more robust and durable.

[0068] It should be noted that, in other embodiments, the end of the first connecting section 21 away from the first plug-in section 22 can also be threadedly connected to the liquid cooling plate 1 through a threaded structure or glued, etc. Specifically, this application does not limit the connection method between the end of the first connecting section 21 away from the first plug-in section 22 and the liquid cooling plate 1.

[0069] In one embodiment, the end of the second connecting section 31 distal from the second plug-in section 32 is welded to the liquid cooling plate 1. This welding ensures the stability of the connection between the second connecting section 31 and the liquid cooling plate 1, preventing loosening of the second connecting section 31 due to vibration or other external forces. Welding the end of the second connecting section 31 distal from the second plug-in section 32 to the liquid cooling plate 1 ensures a good seal between the second connecting section 31 and the liquid cooling plate 1, preventing coolant leakage. Welding allows for direct metal-to-metal contact, helping to improve heat conduction efficiency and thereby better transfer heat from the heat source to the cooling medium. Welding reduces the need for additional fasteners during installation, thereby simplifying the assembly process. Reducing the use of fasteners also reduces material and assembly labor costs. Welding increases the overall strength of the connection between the second connecting section 31 and the liquid cooling plate 1, making the entire liquid cooling plate assembly 10 more robust and durable.

[0070] It should be noted that, in other embodiments, the end of the second connecting section 31 away from the second plug-in section 32 can also be threadedly connected to the liquid cooling plate 1 through a threaded structure or glued, etc. Specifically, this application does not limit the connection method between the end of the second connecting section 31 away from the second plug-in section 32 and the liquid cooling plate 1.

[0071] In one embodiment, the length of the first plug-in section 22 is L1, where 25 mm ≤ L1 ≤ 60 mm. A first plug-in section 22 that is too short may result in an unstable connection, while a first plug-in section that is too long may add unnecessary weight and require excessive installation space. A length of the first plug-in section 22 within the range of 25 mm to 60 mm achieves a balance between connection stability and structural compactness. A first plug-in section 22 that is too short may be difficult to manufacture, while an overly long first plug-in section 22 may increase manufacturing difficulty and cost. Therefore, setting the length of the first plug-in section 22 within the range of 25 mm to 60 mm helps ensure the feasibility of the manufacturing process. A length of the first plug-in section 22 within the range of 25 mm to 60 mm can control costs while ensuring the functionality of the first plug-in section 22. A length of the first plug-in section 22 within the range of 25 mm to 60 mm saves space in the length or width direction of the liquid cooling plate 1, facilitating its placement within limited space.

[0072] It should be noted that the length of the first plug section 22 can be 25mm, 26mm, 28mm, 30mm, 33mm, 35mm, 38mm, 40mm, 43mm, 45mm, 48mm, 50mm, 54mm, 55mm, 58mm, or 60mm. Specifically, the length of the first plug section 22 can be selected as needed, and this application does not limit this.

[0073] In one embodiment, the length of the second plug-in section 32 is L2, where 25 mm ≤ L2 ≤ 60 mm. Therefore, if the length of the second plug-in section 32 is too short, the connection may be unstable, while if it is too long, it may add unnecessary weight and require excessive installation space. When the length of the second plug-in section 32 is within the range of 25 mm to 60 mm, a balance is achieved between connection stability and structural compactness. A second plug-in section 32 that is too short may be difficult to manufacture, while an overly long second plug-in section 32 may increase manufacturing difficulty and cost. Therefore, setting the length of the second plug-in section 32 within the range of 25 mm to 60 mm helps ensure the feasibility of the manufacturing process. A length of the second plug-in section 32 within the range of 25 mm to 60 mm can control costs while ensuring the functionality of the second plug-in section 32. A length of the second plug-in section 32 within the range of 25 mm to 60 mm saves space in the length or width direction of the liquid cooling plate 1, facilitating its placement within limited space.

[0074] It should be noted that the length of the second plug section 32 can be 25mm, 26mm, 28mm, 30mm, 33mm, 35mm, 38mm, 40mm, 43mm, 45mm, 48mm, 50mm, 54mm, 55mm, 58mm, or 60mm. Specifically, the length of the second plug section 32 can be selected as needed, and this application does not limit this.

[0075] In some embodiments, the length of the first connecting section 21 is L3, where 35 mm ≤ L3 ≤ 60 mm. Thus, a length of the first connecting section 21 within the range of 35 mm to 60 mm can reduce resistance to fluid flow, which helps improve coolant flow efficiency and reduce energy loss. A length of the first connecting section 21 within the range of 35 mm to 60 mm makes the first connecting section 21 more robust and durable, allowing it to withstand various stresses and vibrations during operation. This helps improve the reliability and durability of the liquid cold plate assembly 10. A length of the first connecting section 21 within the range of 35 mm to 60 mm can provide sufficient connection strength while reducing fluid resistance and the risk of leakage. Furthermore, a length of the first connecting section 21 within the range of 35 mm to 60 mm can reduce material usage and save costs while ensuring connection strength. Furthermore, a length of the first connecting section 21 within the range of 35 mm to 60 mm makes replacement of the first connecting section 21 easier and faster.

[0076] It should be noted that if the length of the first connecting section 21 is too short, it may not provide sufficient connection strength, while if the first connecting section 21 is too long, it may increase fluid resistance and the risk of leakage. It also increases production costs. Therefore, it helps to reduce these potential problems.

[0077] Specifically, the length of the first connecting section 21 can be 35mm, 38mm, 40mm, 43mm, 45mm, 48mm, 50mm, 54mm, 55mm, 58mm, or 60mm. Specifically, the length of the first connecting section 21 can be selected as needed, and this application does not limit this.

[0078] In some embodiments, the length of the second connecting segment 31 is L4, where 35 mm ≤ L4 ≤ 60 mm. A length of the second connecting segment 31 within the range of 35 mm to 60 mm can reduce resistance to fluid flow, which helps improve coolant flow efficiency and reduce energy loss. A length of the second connecting segment 31 within the range of 35 mm to 60 mm makes the second connecting segment 31 more robust and durable, allowing it to withstand various stresses and vibrations during operation. This helps improve the reliability and durability of the liquid cold plate assembly 10. A length of the second connecting segment 31 within the range of 35 mm to 60 mm can provide sufficient connection strength while reducing fluid resistance and the risk of leakage. Furthermore, a length of the second connecting segment 31 within the range of 35 mm to 60 mm can reduce material usage and save costs while ensuring connection strength. Furthermore, a length of the second connecting segment 31 within the range of 35 mm to 60 mm makes replacement of the second connecting segment 31 easier and faster.

[0079] It should be noted that if the second connecting section 31 is too short, it may not provide sufficient connection strength, while if it is too long, it may increase fluid resistance and the risk of leakage. This will also increase production costs. Therefore, it helps to reduce these potential problems.

[0080] Specifically, the length of the second connecting section 31 can be 35mm, 38mm, 40mm, 43mm, 45mm, 48mm, 50mm, 54mm, 55mm, 58mm, or 60mm. Specifically, the length of the second connecting section 31 can be selected as needed, and this application does not limit this.

[0081] Reference Figure 2 and Figure 3 , Figure 2 This is a schematic structural diagram of a liquid cooling assembly provided by an embodiment of the present utility model. Figure 3 yes Figure 2 The embodiment of the present invention further provides a liquid cooling assembly 100, comprising a plurality of liquid cooling plate assemblies 10, a liquid inlet pipeline 20, and a liquid return pipeline 30 as described above. The plurality of liquid cooling plate assemblies 10 are arranged at intervals along the thickness direction of the liquid cooling plate 1. The liquid inlet pipeline 20 has a first delivery inlet and a plurality of first delivery outlets, the first delivery inlet being connected to the liquid cooling system, and the plurality of first delivery outlets being connected to the plurality of first plug-in sections 22. The liquid return pipeline 30 has a second liquid return inlet and a plurality of second liquid return outlets, the second liquid return inlet being connected to the liquid cooling system, and the plurality of second liquid return outlets being connected to the plurality of second plug-in sections 32.

[0082] In an embodiment of the present invention, the arrangement of multiple liquid cooling plate assemblies 10 allows a larger surface area to contact the coolant, thereby improving heat exchange efficiency. By using multiple liquid cooling plate assemblies 10, cooling capacity can be easily increased or decreased as needed to accommodate devices or modules with different power densities, providing a better thermal management solution. The spaced arrangement of multiple liquid cooling plate assemblies 10 helps ensure uniform distribution of the coolant, thereby achieving a more uniform temperature control effect. The liquid inlet pipeline 20 has multiple first delivery outlets, which are connected to the first plug-in sections 22 of the multiple liquid cooling plate assemblies 10, so that the coolant can be evenly and quickly distributed to each liquid cooling plate assembly 10. This multi-point delivery method ensures that the coolant can fully cover and effectively absorb the heat generated by the heat source. The return liquid pipeline 30 is responsible for collecting the coolant that has absorbed heat and returning it to the liquid cooling system for cooling treatment, forming a closed-loop cooling cycle. This design improves cooling efficiency and ensures the continuous and stable operation of the system. Multiple liquid cooling plate assemblies 10 are spaced apart along the thickness of the liquid cooling plate 1. This allows individual liquid cooling plate assemblies 10 to be replaced independently if a fault occurs, without disrupting the operation of the entire liquid cooling assembly 100. By spacing multiple liquid cooling plate assemblies 10 and arranging the liquid inlet and return lines 20 and 30 along the thickness of the liquid cooling plate 1, the liquid inlet and return lines 20 and 30 can be connected to the first and second plug-in sections 22 and 32 without bending, making operation more convenient and reducing installation space requirements. This ensures sufficient space for battery packs along the thickness of the liquid cooling plate, preventing a reduction in the energy density of the energy storage device. Furthermore, this design makes the entire liquid cooling assembly 100 more compact. This compact design helps save space, making the liquid cooling assembly 100 more adaptable to various installation environments and space constraints. The liquid inlet and return lines 20 and 30 utilize multiple connection points, connecting to the first and second plug-in sections 22 and 32 of the liquid cooling plate assembly 10, respectively. This connection method helps reduce the risk of leakage because even if a leak occurs at a certain connection point, it will not affect the normal operation of the entire system.

[0083] Reference Figure 3In one embodiment, the liquid inlet pipeline 20 includes a plurality of liquid inlet branch pipelines 203 and a liquid inlet main pipeline 204. A liquid inlet branch pipeline 203 is provided between each adjacent liquid cooling plate assembly 10. This ensures that the coolant can be evenly distributed to each liquid cooling plate assembly 10, avoiding the problem of local overheating caused by uneven coolant distribution. The uniform coolant distribution enables each liquid cooling plate assembly 10 to effectively absorb and dissipate heat, thereby improving the heat dissipation efficiency of the entire liquid cooling assembly 100. In addition, the liquid inlet branch pipeline 203 is directly provided between two adjacent liquid cooling plate assemblies 10, which can reduce the redundancy and complexity of the liquid inlet branch pipeline 203, making the layout of the entire liquid cooling assembly 100 more compact. This compact structural design helps save space and improve the integration and aesthetics of the liquid cooling assembly 100. Each of the two ends of each liquid inlet branch pipe 203 is connected to the first plug-in sections 22 of two adjacent liquid cooling plate assemblies 10. Each liquid inlet branch pipe 203 is formed with a first delivery outlet, thus simplifying the installation and operation of the liquid inlet branch pipes 203. Furthermore, the two ends of the liquid inlet branch pipe 203 are directly connected to the first plug-in sections 22 of two adjacent liquid cooling plate assemblies 10, thereby reducing the flow resistance of the coolant in the pipe, allowing the coolant to reach and flow through each liquid cooling plate assembly 10 more quickly. The interconnection of two adjacent liquid inlet branch pipes 203 reduces the complexity of the liquid inlet pipe 20, helps optimize fluid dynamics, reduces pressure loss, and ensures smooth coolant flow. One end of the liquid inlet main line 204 forms a first delivery inlet, and the other end of the liquid inlet main line 204 is connected to one of the multiple liquid inlet branch lines 203. In this way, the coolant delivered from the liquid inlet main line 204 can be evenly delivered to the multiple liquid inlet branch lines 203, ensuring the uniform distribution of the coolant flow, the control of the pressure drop and the control of the temperature difference.

[0084] Reference Figure 2 and Figure 3In one embodiment, the first plug-in section 22 of each liquid cooling plate assembly 10 is pluggably mated with a first plug connector 40. The first plug connector 40 includes at least two first plug-in tubes 401. One of the at least two first plug-in tubes 401 is pluggably mated with the first outlet of the corresponding liquid inlet branch line 203, and the other of the at least two first plug-in tubes 401 is pluggably mated with the other end of the liquid inlet branch line 203 and / or the liquid inlet main line 204 of another liquid cooling plate assembly 10. Thus, through the design of the first plug-in connector 40, the plug-in mating between the liquid cooling plate assembly 10, the liquid inlet branch line 203, and the liquid inlet main line 204 makes the installation process of the liquid cooling assembly 100 simpler and faster, reducing process complexity, installation time, and labor costs. Furthermore, because the plug-in mating generally provides better sealing performance, it can be quickly replaced or repaired without damaging other parts of the system. This plug-in mating approach makes the layout of the liquid cooling assembly 100 more compact, reduces unnecessary piping and connectors, and improves the integration and aesthetics of the liquid cooling assembly 100. When it is necessary to increase or decrease the liquid cooling plate assembly 10, it can be achieved by simply replacing or adjusting the first plug connector 40 and the corresponding plug tube, which greatly reduces the difficulty and cost of upgrading.

[0085] Continue to refer to Figure 2 and Figure 3 In one embodiment, the liquid return line 30 includes multiple liquid return branch lines 303 and a liquid return main line 304. A liquid return branch line 303 is provided between each adjacent liquid cooling plate assembly 10. The two ends of each liquid return branch line 303 are connected to the second plug-in sections 32 of the two adjacent liquid cooling plate assemblies 10. This direct connection reduces the flow resistance of the coolant during the return process, allowing the coolant to flow back to the cooling system more quickly. Because the liquid return branch lines 303 are directly provided between the two adjacent liquid cooling plate assemblies 10 and interconnected, the layout of the entire liquid return line 30 is more compact. This compact layout helps save space and improve system integration. Compared to a design in which each liquid cooling plate assembly 10 is provided with a separate liquid return line 30, this design of interconnected liquid return branch lines 303 reduces the number of lines, reducing the complexity and cost of the liquid cooling assembly 100. Two adjacent liquid return branch lines 303 are interconnected, and each liquid return branch line 303 is formed with a second liquid return outlet. Thus, the multiple liquid return branch lines 303 together form a continuous coolant return path. This design ensures that the coolant can circulate smoothly between each liquid cold plate assembly 10, avoiding local accumulation or blockage. One end of the liquid return main line 304 forms a second liquid return inlet, and the other end of the liquid return main line 304 is connected to one of the multiple liquid return branch lines 303. Thus, this design ensures that the coolant can reflux evenly between each liquid cold plate assembly 10, avoiding performance degradation or failure caused by local poor liquid return.

[0086] Reference Figure 3 In one embodiment, the second plug-in section 32 of each liquid cooling plate assembly 10 is pluggable with a second plug connector 50. The second plug connector 50 has at least two second plug-in tubes 501. One of the at least two second plug-in tubes 501 plugs into the second liquid return outlet of the corresponding liquid return branch line 303, and the other of the at least two second plug-in tubes 501 plugs into the other end of the liquid return branch line 303 and / or the liquid return main line 304 of another liquid cooling plate assembly 10. Thus, through the design of the second plug-in connector 50, the plug-in connection between the liquid cooling plate assembly 10, the liquid return branch line 303, and the liquid return main line 304 makes the installation process of the liquid cooling assembly 100 simpler and faster, reducing process complexity, installation time, and labor costs. Furthermore, because the plug-in connection generally provides better sealing performance, it can be quickly replaced or repaired without damaging other parts of the system. The plug-in connection method makes the layout of the liquid cooling assembly 100 more compact, reduces unnecessary piping and connectors, and improves the integration and aesthetics of the liquid cooling assembly 100. When it is necessary to increase or decrease the liquid cooling plate assembly 10, it can be achieved by simply replacing or adjusting the second plug connector 50 and the corresponding plug tube, which greatly reduces the difficulty and cost of upgrading.

[0087] Reference Figure 4 、 Figure 5 and Figure 7 , Figure 4 This is a schematic diagram of the structure of the energy storage device provided by the embodiment of the present utility model. Figure 5 yes Figure 4 The schematic cross-sectional view of the energy storage device (at one angle) shown in FIG. Figure 7 yes Figure 4 The embodiment of the present invention further provides an energy storage device 1000, which includes the liquid cooling assembly 100 and a plurality of battery packs, with a battery pack installed between two adjacent liquid cooling plate assemblies 10.

[0088] In an embodiment of the present invention, the liquid cooling assembly 100 utilizes a layout that arranges multiple liquid cooling plate assemblies 10, along with the liquid inlet and return lines 20 and 30, spaced apart along the thickness of the liquid cooling plate 1. This allows the liquid inlet and return lines 20 and 30 to connect to the first and second connector sections 22 and 32 without bending, making operation more convenient and reducing installation space requirements. This ensures sufficient space for battery packs along the thickness of the liquid cooling plate, thus preventing a reduction in the energy density of the energy storage device. Furthermore, the liquid cooling assembly 100, through the circulation of the liquid cooling plate assemblies 10 and coolant within it, effectively absorbs and removes heat generated by the battery packs during operation. This heat dissipation method is more efficient than traditional air cooling, significantly reducing battery pack temperature and improving the safety and stability of the energy storage system. The design of installing battery packs between adjacent liquid cooling plate assemblies 10 ensures that each battery pack is adequately cooled. Due to the even distribution of the liquid cooling plate assemblies 10, the coolant circulates evenly through each battery pack, preventing local overheating and improving heat dissipation uniformity. An efficient heat dissipation system helps maintain the battery pack within an optimal operating temperature range, significantly extending its lifespan. Operating the battery in a high-temperature environment accelerates its aging process. The use of a liquid cooling system can effectively reduce the battery's operating temperature, thereby slowing down the aging process. At an optimal operating temperature, the battery's energy conversion efficiency is higher. By maintaining the battery pack within the optimal operating temperature range, the liquid cooling system helps improve the overall energy conversion efficiency of the energy storage system, thereby increasing the system's output power and energy storage capacity. Battery packs are prone to thermal runaway in high-temperature environments, leading to safety hazards such as fire or explosion. The use of a liquid cooling system can significantly lower the battery pack's operating temperature, reducing the risk of thermal runaway and improving the safety of the energy storage system. The design of installing the battery pack between two adjacent liquid cooling plate assemblies 10 enables a more compact layout of the energy storage device 1000. This layout not only improves space utilization but also helps reduce the device's footprint and weight, thereby reducing transportation and installation costs.

[0089] Reference Figure 5 and Figure 7In one embodiment, the energy storage device 1000 further includes a housing 300 having a housing cavity 3001 formed therein. Multiple battery packs and multiple liquid cooling plate assemblies 10 are mounted within the housing cavity 3001. Thus, the housing 300 provides physical protection for the multiple battery packs and multiple liquid cooling plate assemblies 10, preventing them from being damaged by external environmental factors (such as dust, moisture, and mechanical shock). The housing 300 is provided with multiple first through-holes 3002, each of which communicates with the housing cavity 3001. A portion of the liquid inlet pipeline 20 is located outside the housing 300, while another portion of the liquid inlet pipeline 20 is adapted to pass through the multiple first through-holes 3002 and connect to the multiple first plug-in sections 22. This design makes the internal structure of the energy storage device 1000 more compact. It effectively utilizes the space within the housing 300, reducing the space occupied by the pipeline within the housing 300, thereby improving the overall space utilization and energy density of the device. The first through-hole 3002 facilitates the installation of the liquid inlet pipe 20. During the installation process, it is only necessary to pass the corresponding part of the liquid inlet pipe 20 through the through-hole and connect it to the first plug-in section 22 of the liquid cooling plate assembly 10. This design reduces the installation steps and difficulty, and improves installation efficiency. The design of the first through-hole 3002 also provides convenience when maintenance of the liquid inlet pipe 20 or the liquid cooling plate assembly 10 is required. The operator can easily disconnect the pipe connection through the first through-hole 3002 and inspect, repair or replace the components inside the shell 300 without disassembling the entire energy storage device 1000. The design of the first through-hole 3002 ensures that the coolant can flow smoothly into each liquid cooling plate assembly 10. When the coolant flows in the liquid cooling plate assembly 10, it can absorb and carry away the heat generated by the battery pack, thereby achieving effective heat dissipation. This design helps to maintain the battery pack operating within a suitable operating temperature range and improve the overall performance of the energy storage device 1000.

[0090] Reference Figure 4In one embodiment, the shell 300 is provided with a plurality of second through-holes 3003, and the plurality of second through-holes 3003 are all connected to the accommodating cavity 3001. A portion of the return liquid pipeline 30 is located outside the shell 300, and another portion of the return liquid pipeline 30 is adapted to pass through the plurality of second through-holes 3003 and connect to the plurality of second plug-in sections 32. In this way, through the second through-holes 3003, the return liquid pipeline 30 can smoothly guide the coolant that has absorbed heat from the liquid cooling plate assembly 10 and return it to the cooling system for further cooling. This design ensures the continuous circulation of the coolant and improves the heat dissipation efficiency. Since the return liquid pipeline 30 can pass through the plurality of second through-holes 3003 and connect to the plurality of liquid cooling plate assemblies 10, it can ensure that each liquid cooling plate assembly 10 can be cooled in a timely manner. This helps to achieve uniform heat dissipation of the battery pack and prevent the occurrence of local overheating. Placing the connection point of the return liquid line 30 at the second through-hole 3003 of the housing 300 reduces the length of the return liquid line 30 within the housing 300, thus reducing the space occupied by the line within the housing 300. This effectively utilizes the space within the housing 300, thereby improving the overall space utilization and energy density of the device. Furthermore, when installing or maintaining the return liquid line 300, the operator only needs to access the second through-hole 3003, without having to disassemble the entire housing 300. This significantly improves the convenience of installation and maintenance, reducing operational difficulty and costs.

[0091] Reference Figure 6 and Figure 8 , Figure 6 yes Figure 5 The enlarged schematic diagram of the part A is shown. Figure 8 yes Figure 7A partial enlarged schematic diagram of point B is shown. In one embodiment, the first plug-in section 22 is located within the accommodating cavity 3001, and a first clearance gap is provided between the other end of the first plug-in section 22 and the inner wall of the housing 300. This first clearance gap prevents mechanical interference between the first plug-in section 22 and the inner wall of the housing 300, particularly in the event of equipment vibration or thermal expansion, thereby preventing damage to the first plug-in section 22. Providing the first clearance gap reduces the risk of damage to the first plug-in section 22 due to mechanical stress, thereby improving overall system reliability. The liquid cold plate assembly 10 generates heat during operation, causing thermal expansion of the first plug-in section 22. The first clearance gap provides space for this expansion, preventing deformation or damage caused by thermal expansion. The presence of the first clearance gap allows easier access to the first plug-in section 22 for maintenance personnel, simplifying installation and maintenance. If there is insufficient clearance between the first plug-in section 22 and the housing 300, wear and tear may lead to poor sealing after prolonged operation. The first clearance gap helps maintain a good seal and reduce the possibility of leakage. When the first plug-in section 22 needs to be replaced or inspected, the presence of the first avoidance gap can reduce the complexity of the operation and improve maintenance efficiency.

[0092] Continue to refer to Figure 6 and Figure 8 In one embodiment, the second plug-in section 32 is located within the accommodating cavity 3001, and a second clearance gap is provided between the other end of the second plug-in section 32 and the inner wall of the housing 300. This second clearance gap prevents mechanical interference between the second plug-in section 32 and the inner wall of the housing 300, particularly in the event of equipment vibration or thermal expansion, which could damage the second plug-in section 32. Providing the second clearance gap reduces the risk of damage to the second plug-in section 32 due to mechanical stress, thereby improving overall system reliability. The liquid cold plate assembly 10 generates heat during operation, causing the second plug-in section 32 to thermally expand. The second clearance gap provides space for this expansion, preventing deformation or damage caused by thermal expansion. The presence of the second clearance gap allows easier access to the second plug-in section 32 for maintenance personnel, simplifying installation and maintenance. If there is insufficient clearance between the second plug-in section 32 and the housing 300, wear and tear may result in a poor seal after prolonged operation. The second clearance gap helps maintain a good seal and reduces the possibility of leakage. When the second plug-in section 32 needs to be replaced or inspected, the existence of the second avoidance gap can reduce the complexity of the operation and improve maintenance efficiency.

[0093] An embodiment of the present invention further provides a vehicle, which includes the energy storage device 1000 as described above. The specific structure of the energy storage device 1000 refers to the above embodiment. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described one by one here.

[0094] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A liquid cooling plate assembly, characterized in that: include: a liquid cooling plate having a liquid inlet and a liquid outlet; a first joint portion, provided on the liquid cooling plate and arranged in a curved manner, comprising a first connecting section and a first plug-in section connected to each other, the first connecting section extending along the thickness direction of the liquid cooling plate, an end of the first connecting section away from the first plug-in section being connected to the liquid inlet, and the first plug-in section extending along the length or width direction of the liquid cooling plate; The second joint portion is provided on the liquid cooling plate and is curved. The second joint portion includes a second connecting section and a second plug-in section connected to each other. The second connecting section extends along the thickness direction of the liquid cooling plate. One end of the second connecting section away from the second plug-in section is connected to the liquid outlet. The second plug-in section extends along the length or width direction of the liquid cooling plate.

2. The liquid cooling plate assembly according to claim 1, wherein: One end of the first connecting section away from the first plug-in section is welded and fixed to the liquid cooling plate; and / or, One end of the second connecting section away from the second plug-in section is welded and fixed to the liquid cooling plate.

3. The liquid cooling plate assembly according to claim 1, wherein: The length of the first plug section is L1, wherein 25 mm ≤ L1 ≤ 60 mm; and / or, The length of the second plug-in section is L2, wherein 25 mm ≤ L2 ≤ 60 mm.

4. The liquid cooling plate assembly according to claim 1, wherein: The length of the first connecting section is L3, wherein 35 mm ≤ L3 ≤ 60 mm; and / or, The length of the second connecting section is L4, wherein 35 mm ≤ L4 ≤ 60 mm.

5. A liquid cooling component, characterized in that: include: A plurality of liquid cooling plate assemblies according to any one of claims 1 to 4, wherein the plurality of liquid cooling plate assemblies are arranged at intervals along the thickness direction of the liquid cooling plate; a liquid inlet pipeline having a first delivery inlet and a plurality of first delivery outlets, wherein the first delivery inlet is used to be connected to the liquid cooling system, and the plurality of first delivery outlets are connected to the plurality of first plug-in sections; The liquid return pipeline has a second liquid return inlet and multiple second liquid return outlets, the second liquid return inlet is used to be connected to the liquid cooling system, and the multiple second liquid return outlets are connected to multiple second plug-in sections.

6. The liquid cooling assembly according to claim 5, characterized in that The liquid inlet pipeline comprises: A plurality of liquid inlet branch pipes, each of which is provided between two adjacent liquid cooling plate assemblies, wherein both ends of each liquid inlet branch pipe are respectively connected to the first plug-in sections of two adjacent liquid cooling plate assemblies, and the two adjacent liquid inlet branch pipes are connected to each other, and each liquid inlet branch pipe is formed with the first delivery outlet; A liquid inlet main line, one end of which forms the first delivery inlet, and the other end of which is connected to one of the plurality of liquid inlet branch lines.

7. The liquid cooling assembly according to claim 6, characterized in that The first plug-in section of each liquid cooling plate assembly is plugged into and matched with a first plug connector, and the first plug connector has at least two first plug-in tubes, one of the at least two first plug-in tubes is plugged into and matched with the first delivery outlet of the corresponding liquid inlet branch pipe, and the other of the at least two first plug-in tubes is plugged into and matched with the other end of the liquid inlet branch pipe and / or the liquid inlet main pipe of another liquid cooling plate assembly.

8. The liquid cooling assembly according to claim 5, characterized in that The liquid return pipeline comprises: A plurality of liquid return branch pipes, each of which is provided between two adjacent liquid cooling plate assemblies, wherein both ends of each liquid return branch pipe are respectively connected to the second plug-in sections of two adjacent liquid cooling plate assemblies, and the two adjacent liquid return branch pipes are connected to each other, and each liquid return branch pipe is formed with the second liquid return outlet; A liquid return main line, one end of which forms the second liquid return inlet, and the other end of which is connected to one of the plurality of liquid return branch lines.

9. The liquid cooling assembly according to claim 8, characterized in that The second plug-in section of each liquid cooling plate assembly is plugged into and matched with a second plug connector, and the second plug connector has at least two second plug-in tubes, one of the at least two second plug-in tubes is plugged into and matched with the second liquid return outlet of the corresponding liquid return branch line, and the other of the at least two second plug-in tubes is plugged into and matched with the other end of the liquid return branch line and / or the liquid return main line of another liquid cooling plate assembly.

10. An energy storage device, characterized in that: include: The liquid cooling assembly according to any one of claims 5 to 9; A plurality of battery packs are installed between two adjacent liquid cooling plate assemblies.

11. The energy storage device according to claim 10, characterized in that: The battery packs and the liquid cooling plate assemblies are mounted in the housing. The battery packs and the liquid cooling plate assemblies are mounted in the housing. The housing is provided with a plurality of first through holes, and the plurality of first through holes are in communication with the housing. A portion of the liquid inlet pipeline is located outside the shell, and another portion of the liquid inlet pipeline is suitable for passing through a plurality of the first penetration holes and being connected to a plurality of the first plug-in sections.

12. The energy storage device according to claim 11, characterized in that The shell is provided with a plurality of second penetration holes, and the plurality of second penetration holes are all communicated with the accommodating cavity; A portion of the liquid return pipeline is located outside the shell, and another portion of the liquid return pipeline is suitable for passing through a plurality of second penetration holes and connected to a plurality of second plug-in sections.

13. The energy storage device according to claim 11, characterized in that The first plug-in section is located in the accommodating cavity, and a first avoidance gap is provided between the other end of the first plug-in section and the inner side wall of the housing; and / or, The second plug-in section is located in the accommodating cavity, and a second avoidance gap is provided between the other end of the second plug-in section and the inner side wall of the shell.

14. A vehicle, characterized in that: Comprising the energy storage device according to any one of claims 10 to 13.

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