Liquid cooling assembly and liquid cooling tank

Abstract

The utility model provides a liquid cooling assembly and liquid cooling box, relate to liquid cooling heat dissipation technical field, liquid cooling assembly, include: liquid cooling board, liquid cooling board inside is provided with liquid flow channel, and is provided with liquid inlet and liquid outlet with liquid flow channel intercommunication, support beam, is located in the circumferential outside of liquid cooling board, connection frame, connection frame and liquid cooling board are the split manufacture, and the circumferential outer edge of connection frame and liquid cooling board is fixedly connected, and connection frame is fixed on the upper surface of support beam. The utility model provides liquid cooling assembly, through with connection frame and liquid cooling board design is split type structure, liquid cooling board can concentrate on optimizing heat conduction, and connection frame can independently select high -strength material and carry out local reinforcement to stress point, thereby realized higher structural strength, better heat conduction performance and better workability and economy on the whole.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling technology, and more specifically, to a liquid cooling component and a liquid cooling box. Background Technology

[0002] Liquid cooling plates consist of a top plate and a flow channel plate. In some liquid cooling plates, the top plate is a one-piece molded basin shape, comprising a bottom plate, vertical plates, and flanges. The flanges overlap the upper surface of the outer frame, thus connecting the liquid cooling plate to the frame. However, during the manufacturing process of a one-piece molded basin-shaped top plate, the stamping process requires extremely high material ductility. To form the complex basin-shaped structure, it is often necessary to sacrifice the thickness of the bottom plate or use specific grades of aluminum alloy, which limits the thermal conductivity and structural strength of the top plate. Furthermore, for example, it is difficult to perform targeted reinforcement in a one-piece molded structure. For instance, it is not possible to use higher-strength materials or add reinforcing ribs only at the flanges or corners where the stress is greatest. Utility Model Content

[0003] The present invention aims to at least solve the problems existing in the related technology of traditional one-piece molded basin-shaped upper plate structure, such as the restriction on material selection, difficulty in local reinforcement, and low manufacturing yield.

[0004] To this end, the first aspect of this utility model provides a liquid cooling assembly, comprising: a liquid cooling plate, wherein a liquid flow channel is provided inside the liquid cooling plate, and an inlet and an outlet communicating with the liquid flow channel; a support beam, which is arranged around the outer periphery of the liquid cooling plate; and a connecting frame, wherein the connecting frame is manufactured separately from the liquid cooling plate, the connecting frame is fixedly connected to the outer periphery of the liquid cooling plate, and the connecting frame is fixed to the upper surface of the support beam.

[0005] The liquid cooling assembly provided by this utility model designs the connecting frame and the liquid cooling plate as a separate structure. The liquid cooling plate can focus on optimizing heat conduction, while the connecting frame can be independently made of high-strength materials and locally reinforced at stress points. This results in higher structural strength, better thermal conductivity, and better manufacturability and economy as a whole.

[0006] In the above technical solution, the liquid cooling plate includes: an upper plate; a flow channel plate having a recessed flow channel portion, the upper plate and the flow channel portion forming a liquid flow channel; and a connecting frame connected to the circumferential outer edge of the upper plate.

[0007] In this technical solution, the liquid cooling plate consists of an upper plate and a flow channel plate with flow channels. The connecting frame is directly connected to the periphery of the upper plate, providing a stable and reliable support boundary for the upper plate and the entire liquid cooling plate, ensuring the stable installation of the liquid cooling plate on the support beam.

[0008] Of course, the connecting frame can also be connected to the outer circumferential edge of the flow channel plate. This design concentrates the main installation and load-bearing structure in the flow channel plate, which can further simplify the structure of the upper plate. For example, the upper plate can be completely used as a flat cover plate, which facilitates the processing and replacement of the upper plate. This provides another feasible technical path for the modular design of liquid cooling plates.

[0009] In the above technical solution, the liquid flow channel includes two liquid inlet branch flow channels and a cooling flow channel that are connected in pairs. A first convex bulge is provided on the upper plate. The first convex bulge and the flow channel plate form a first cavity. The first cavity is connected to the two liquid inlet branch flow channels and is also connected to the liquid inlet.

[0010] In this technical solution, the first cavity is formed by the first convex bulge and the flow channel plate, which enables the coolant to be evenly distributed to two inlet branch flow channels after entering from a single inlet, effectively improving the uniformity and efficiency of cooling in each area of ​​the liquid cooling plate.

[0011] In the above technical solution, the liquid flow channel also includes two liquid outlet branch flow channels, both of which are connected to the cooling flow channel. A second protrusion is provided on the upper plate, and the second protrusion and the flow channel plate form a second cavity. The second cavity is connected to the two liquid outlet branch flow channels and is also connected to the liquid outlet.

[0012] In this technical solution, by setting a second convex hull to form a second cavity, the coolant can be evenly collected from two outlet branch channels after flowing through the cooling channel and discharged through a single outlet, forming a complete, symmetrical and efficient "diversion-convergence" circulation system, which further optimizes the temperature uniformity.

[0013] In the above technical solution, the connecting frame is welded to the liquid cooling plate.

[0014] In this technical solution, the welding connection method forms a strong metallurgical bond between the connecting frame and the liquid cooling plate, ensuring high strength and high sealing reliability of the connection interface, so that the split structure can work reliably as a whole.

[0015] In the above technical solution, the shape of the liquid inlet is circular, square, or polygonal.

[0016] In this technical solution, the diverse design of the inlet shape increases the flexibility to match with different specifications of adapters or connectors, adapts to different interface standards and usage scenarios, avoids rotation at the connector connection, and improves the connection stability between the connector and the inlet.

[0017] In the above technical solution, the shape of the liquid outlet is circular, square, or polygonal.

[0018] In this technical solution, the diverse designs of the outlet shape also enhance the adaptability to external pipeline connections and the degree of design freedom.

[0019] In the above technical solution, the liquid cooling assembly further includes: a first adapter, including a first inlet and a first outlet that are interconnected, the first outlet being connected to the liquid inlet, and the first inlet extending through the support beam to the outside of the liquid cooling assembly; and a second adapter, including a second inlet and a second outlet that are interconnected, the second inlet being connected to the liquid outlet, and the second outlet extending through the support beam to the outside of the liquid cooling assembly.

[0020] In this technical solution, the first adapter and the second adapter guide the liquid inlet and outlet at the bottom of the liquid cooling plate to the outside of the support beam, making the connection of external pipelines more convenient and avoiding interference of pipelines with the internal space, thus optimizing the overall layout.

[0021] Furthermore, by incorporating a first and a second adapter, the liquid inlet and outlet at the bottom of the liquid-cooled plate are guided to the outside of the support beam. This design eliminates the need for the inlet and outlet connectors to pass through the limited-height through holes in the side wall of the support beam, completely removing the radial dimension limitations imposed by the support beam structure. Therefore, larger diameter liquid-cooled connectors can be used, significantly improving coolant flow and heat dissipation capacity. Simultaneously, this also facilitates the connection of external piping and optimizes the overall layout.

[0022] In the above technical solution, the liquid cooling assembly further includes: a water inlet connector, which is located on the upper surface of the first adapter and communicates with the first inlet; and a water outlet connector, which is located on the upper surface of the second adapter and communicates with the second outlet.

[0023] In this technical solution, the inlet and outlet connectors are standard external interfaces, located on the upper surface of the adapter for quick and easy connection to external cooling pipes, forming a plug-and-play complete functional unit. Furthermore, the upper surface of the adapter has a larger surface area than its sides; therefore, by placing the inlet and outlet connectors on the upper surface, larger diameter liquid cooling connectors can be used, significantly improving the coolant flow rate and heat dissipation capacity.

[0024] In the above technical solution, the support beam includes two oppositely arranged crossbeams and two oppositely arranged longitudinal beams. The extension direction of the crossbeams is the width direction of the liquid cooling plate, and the extension direction of the longitudinal beams is the length direction of the liquid cooling plate. The two longitudinal beams and the two crossbeams enclose a receiving space, and at least a portion of the liquid cooling plate is located within the receiving space.

[0025] In this technical solution, the support beam is formed by longitudinal and transverse beams enclosing a rectangular receiving space. This structure is regular and strong, providing a clear and stable installation position for the liquid cooling plate. Furthermore, at least a portion of the liquid cooling plate is located within this receiving space. This embedded layout allows the height of the liquid cooling plate to overlap with the height of the support beam, significantly reducing the overall structural height of the liquid cooling assembly. This achieves a thinner and more compact structure, which helps save internal space in the equipment.

[0026] In the above technical solution, the inner sides of the two longitudinal beams are provided with stepped portions, and the liquid cooling assembly also includes: transverse reinforcing ribs connected to the lower surface of the liquid cooling plate, and the two ends of the transverse reinforcing ribs overlap on the stepped portions of the two longitudinal beams; multiple limiting strips, multiple limiting strips are provided on the upper surface of the liquid cooling plate, and multiple limiting strips are spaced apart along the width direction of the liquid cooling plate, and the extension direction of each limiting strip is the same as the length direction of the liquid cooling plate.

[0027] In this technical solution, the stepped portion of the longitudinal beam provides a stable overlapping platform for the transverse reinforcing ribs, significantly enhancing the supporting rigidity and deformation resistance of the bottom of the liquid cooling plate. The limiting strip on the upper surface is used to precisely define the installation position of components such as battery modules, preventing them from shifting, and also helps control the thickness of the heat transfer medium, jointly improving the structural reliability and ease of use of the product.

[0028] The second aspect of this utility model provides a liquid cooling box, including: a box body; and a liquid cooling component as described in any of the first aspects of this utility model, wherein the box body is mounted on a connecting frame and forms an installation space with the liquid cooling component, the installation space being used to install a battery module.

[0029] In this embodiment, the enclosure and the liquid cooling assembly together form a sealed installation space, which can be used to install equipment requiring heat dissipation, such as battery modules. Because it employs the liquid cooling assembly described in any of the first aspects, the liquid-cooled enclosure possesses all of its beneficial effects.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 One of the structural schematic diagrams of a liquid cooling assembly according to an embodiment of this application is shown; Figure 2 A second schematic diagram of the structure of a liquid cooling assembly according to an embodiment of this application is shown; Figure 3 It shows Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 The third schematic diagram shows the structure of a liquid cooling assembly according to an embodiment of this application; Figure 5 It shows Figure 4 Enlarged view of the structure at point D; Figure 6 A schematic diagram of the structure of a first adapter and a second adapter according to an embodiment of this application is shown; Figure 7 A schematic diagram of the structure of a liquid cooling box according to an embodiment of this application is shown; Figure 8 The fourth schematic diagram shows the structure of a liquid cooling assembly according to one embodiment of this application; Figure 9 Fifth of the schematic diagrams shows the structure of a liquid cooling assembly according to an embodiment of this application.

[0032] in, Figures 1 to 9 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1. Liquid cooling plate, 12. Liquid inlet, 14. Liquid outlet, 16. Liquid flow channel, 162. Liquid inlet branch flow channel, 164. Cooling flow channel, 166. Liquid outlet branch flow channel, 2. Support beam, 22. Crossbeam, 24. Longitudinal beam, 26. Step section, 3. Connecting frame, 32. Side plate, 34. Flanged plate, 4. Top plate, 42. First convex bulge, 44. Second convex bulge, 5. Flow channel plate, 52. Flow channel section, 6. First adapter, 62. First inlet, 64. First outlet, 7. Second adapter, 72. Second inlet, 74. Second outlet, 82. Water inlet connector, 84. Water outlet connector, 92. Transverse reinforcing rib, 94. Limiting strip, 9. Housing. Detailed Implementation

[0033] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the first aspect of this utility model provides a liquid cooling assembly, including a liquid cooling plate 1, a support beam 2, and a connecting frame 3. The liquid cooling plate 1 has a liquid flow channel 16 inside, and has an inlet 12 and an outlet 14 communicating with the liquid flow channel 16. The support beam 2 is arranged around the outer periphery of the liquid cooling plate 1. The connecting frame 3 is manufactured separately from the liquid cooling plate 1, and is fixedly connected to the outer periphery of the liquid cooling plate 1. The connecting frame 3 is fixed to the upper surface of the support beam 2.

[0036] The liquid cooling assembly provided by this utility model designs the connecting frame 3 and the liquid cooling plate 1 as a separate structure. The liquid cooling plate 1 can focus on optimizing heat conduction, while the connecting frame 3 can be independently made of high-strength material and locally reinforced at stress points. This results in higher structural strength, better thermal conductivity, and better processability and economy as a whole.

[0037] The connecting frame 3 includes a side plate 32 and a flange plate 34. The side plate 32 is connected to the liquid cooling plate 1, and the flange plate 34 overlaps and is fixed to the support beam 2.

[0038] In the above technical solution, the liquid cooling plate 1 includes an upper plate 4 and a flow channel plate 5. The flow channel plate 5 has a recessed flow channel portion 52, and the upper plate 4 and the flow channel portion 52 form a liquid flow channel 16. The connecting frame 3 is connected to the circumferential outer edge of the upper plate 4. That is, the circumferential outer edge of the upper plate 4 is connected to the side plate 32, so that the connecting frame 3 and the upper plate 4 together form a basin shape.

[0039] In this technical solution, the liquid cooling plate 1 is composed of an upper plate 4 and a flow channel plate 5 with a flow channel section 52. The connecting frame 3 is directly connected to the periphery of the upper plate 4, providing a stable and reliable support boundary for the upper plate 4 and the entire liquid cooling plate 1, ensuring the stable installation of the liquid cooling plate 1 on the support beam 2.

[0040] Of course, the connecting frame 3 can also be connected to the outer circumferential edge of the flow channel plate 5. This design concentrates the main installation and load-bearing structure on the flow channel plate 5, which can further simplify the structure of the upper plate 4. For example, the upper plate 4 can be completely used as a flat cover plate, which facilitates the processing and replacement of the upper plate 4. This provides another feasible technical path for the modular design of the liquid cooling plate 1.

[0041] In the above technical solution, the liquid flow channel 16 includes two liquid inlet branch flow channels 162 and a cooling flow channel 164 that are connected in pairs. A first protrusion 42 is provided on the upper plate 4. The first protrusion 42 and the flow channel plate 5 form a first cavity. The first cavity is connected to the two liquid inlet branch flow channels 162. The liquid inlet 12 is provided on the flow channel plate 5 and located below the first protrusion 42. The first cavity is also connected to the liquid inlet 12.

[0042] In this technical solution, the first cavity is formed by the first convex 42 and the flow channel plate 5, which enables the coolant to be evenly distributed to the two inlet branch flow channels 162 after entering from a single inlet 12, effectively improving the uniformity and efficiency of cooling in each area of ​​the liquid cooling plate 1.

[0043] In the above technical solution, the liquid flow channel 16 also includes two liquid outlet branch flow channels 166, both of which are connected to the cooling flow channel 164. A second protrusion 44 is provided on the upper plate 4. The second protrusion 44 and the flow channel plate 5 form a second cavity. The second cavity is connected to the two liquid outlet branch flow channels 166. The liquid outlet 14 is located on the flow channel plate 5, below the second protrusion 44. The second cavity is also connected to the liquid outlet 14.

[0044] In this technical solution, by setting a second convex 44 to form a second cavity, the coolant can be evenly collected from two outlet branch channels 166 after flowing through the cooling channel 164 and discharged through a single outlet 14, forming a complete, symmetrical and efficient "diversion-convergence" circulation system, which further optimizes the temperature uniformity.

[0045] In the above technical solution, the connecting frame 3 is welded to the liquid cooling plate 1.

[0046] In this technical solution, the welding connection method forms a strong metallurgical bond between the connecting frame 3 and the liquid cooling plate 1, ensuring high strength and high sealing reliability of the connection interface, so that the split structure can work reliably as a whole.

[0047] For example, the side plate 32 is welded to the upper plate 4, or the side plate 32 is welded to the flow channel plate 5.

[0048] In the above technical solution, the shape of the liquid inlet 12 is circular, square or polygonal.

[0049] In this technical solution, the diverse design of the liquid inlet 12 shape increases the flexibility of matching with different specifications of adapters or connectors, adapts to different interface standards and usage scenarios, avoids rotation at the connector connection, and improves the connection stability between the connector and the liquid inlet 12.

[0050] In the above technical solution, the shape of the liquid outlet 14 is circular, square or polygonal.

[0051] In this technical solution, the diverse shapes of the outlet 14 also enhance the adaptability to external pipeline connections and design freedom.

[0052] In the above technical solutions, such as Figure 5 and Figure 6As shown, the liquid cooling assembly further includes: a first adapter 6, including a first inlet 62 and a first outlet 64 that are interconnected, the first outlet 64 being connected to the liquid inlet 12, and the first inlet 62 extending through the support beam 2 to the outside of the liquid cooling assembly; and a second adapter 7, including a second inlet 72 and a second outlet 74 that are interconnected, the second inlet 72 being connected to the liquid outlet 14, and the second outlet 74 extending through the support beam 2 to the outside of the liquid cooling assembly.

[0053] In this technical solution, the first adapter 6 and the second adapter 7 guide the liquid inlet 12 and the liquid outlet 14 at the bottom of the liquid cooling plate 1 to the outside of the support beam 2, making the connection of the external pipeline more convenient and avoiding the interference of the pipeline to the internal space, thus optimizing the overall layout.

[0054] Furthermore, by setting the first adapter 6 and the second adapter 7, the liquid inlet 12 and outlet 14 at the bottom of the liquid cooling plate 1 are guided to the outside of the support beam 2. This design eliminates the need for the inlet connector 82 and outlet connector 84 to pass through the through hole with limited height on the side wall of the support beam 2, completely removing the limitation on the radial dimensions of the connectors imposed by the support beam 2 structure. Therefore, a liquid cooling connector with a larger diameter can be used, thereby significantly improving the flow rate and heat dissipation capacity of the coolant. At the same time, this also makes the connection of external pipelines more convenient and optimizes the overall layout.

[0055] The support beam 2 is provided with an installation groove. The adapter includes a first section located below the liquid cooling plate 1 and a second section located above the installation groove, as well as a transition section connecting the first section and the second section. The first outlet 64 is located in the first section, at least a part of the second section is located on the outside of the outer frame, and the first inlet 62 is located in the second section.

[0056] In the above technical solution, the upper surface of the second segment of the adapter and the upper surface of the outer frame are on the same plane.

[0057] In this technical solution, the upper surface of the second section and the upper surface of the outer frame are on the same plane, which enables the adapter and the outer frame to be integrated smoothly, resulting in a simple appearance, avoiding abrupt protrusions, saving space, and ensuring that the plane where the water inlet is located has optimal operational accessibility.

[0058] In the above technical solution, the first section, the transition section, and the second section together form a Z-shaped adapter.

[0059] In this technical solution, the Z-shaped flow channel design can efficiently change the flow direction of the coolant within a limited space, achieving a cross-flow from bottom to top. The structure is compact and the fluid resistance is relatively small.

[0060] In the above technical solution, the liquid cooling assembly further includes: a water inlet connector 82, which is located on the upper surface of the first adapter 6 and communicates with the first inlet 62; and a water outlet connector 84, which is located on the upper surface of the second adapter 7 and communicates with the second outlet 74.

[0061] In this technical solution, the inlet connector 82 and outlet connector 84 are standard external interfaces, which are located on the upper surface of the adapter for easy and quick connection to external cooling pipes, forming a plug-and-play complete functional unit. Furthermore, the upper surface of the adapter has a larger surface area than the sides; therefore, by placing the inlet connector 82 and outlet connector 84 on the upper surface of the adapter, larger diameter liquid cooling connectors can be used, thereby significantly improving the coolant flow rate and heat dissipation capacity.

[0062] In the above technical solution, the support beam 2 includes two oppositely arranged cross beams 22 and two oppositely arranged longitudinal beams 24. The extension direction of the cross beams 22 is the width direction of the liquid cooling plate 1, and the extension direction of the longitudinal beams 24 is the length direction of the liquid cooling plate 1. The two longitudinal beams 24 and the two cross beams 22 enclose a receiving space, and at least a part of the liquid cooling plate 1 is located in the receiving space.

[0063] In this technical solution, the support beam 2 is formed by longitudinal beams 24 and transverse beams 22, creating a rectangular accommodating space. This structure is regular and strong, providing a clear and stable installation position for the liquid cooling plate 1. Furthermore, at least a portion of the liquid cooling plate 1 is located within this accommodating space. This embedded layout allows the height direction of the liquid cooling plate 1 to overlap with the height direction of the support beam 2, significantly reducing the overall structural height of the liquid cooling assembly. This achieves a thinner and more compact structure, which is beneficial for saving internal space in the equipment.

[0064] In the above technical solutions, such as Figure 1 , Figure 8 and Figure 9 As shown, the inner sides of the two longitudinal beams 24 are provided with stepped portions 26. The liquid cooling assembly also includes: transverse reinforcing ribs 92, which are connected to the lower surface of the liquid cooling plate 1, and the two ends of the transverse reinforcing ribs 92 overlap the stepped portions 26 of the two longitudinal beams 24; and multiple limiting strips 94, which are provided on the upper surface of the liquid cooling plate 1, and the multiple limiting strips 94 are spaced apart along the width direction of the liquid cooling plate 1, and the extension direction of each limiting strip 94 is the same as the length direction of the liquid cooling plate 1.

[0065] In this technical solution, the stepped portion 26 of the longitudinal beam 24 provides a stable overlapping platform for the transverse reinforcing ribs 92, significantly enhancing the supporting rigidity and deformation resistance of the bottom of the liquid cooling plate 1. The limiting strip 94 on the upper surface is used to precisely define the installation position of components such as battery modules, preventing them from shifting, and helps control the thickness of the heat transfer medium, jointly improving the structural reliability and ease of use of the product.

[0066] like Figure 1 and Figure 7 As shown, the second aspect of this utility model provides a liquid cooling box, including: a box body 9; as in any of the liquid cooling components of the first aspect of this utility model, the box body 9 is covered on the connecting frame 3, forming an installation space with the liquid cooling component, and the installation space is used to install the battery module.

[0067] In this embodiment, the housing 9 and the liquid cooling assembly together form a sealed installation space, which can be used to install equipment requiring heat dissipation, such as battery modules. Because it employs the liquid cooling assembly described in any of the first aspects, the liquid-cooled box possesses all of its beneficial effects.

[0068] Another embodiment of this utility model provides a liquid cooling box.

[0069] It's important to understand that with the rapid development of energy storage technology, high-energy-density, large-capacity, large-size, and long-life battery packs have become an industry trend, placing higher demands on the strength of the battery pack enclosure. However, traditional battery packs have the following problems: 1. Traditional battery pack enclosures lack rigidity and are prone to deformation during hoisting or due to their own weight, which may pose significant risks during transportation and use.

[0070] 2. The inlet and outlet of the liquid cooling plate in traditional battery packs extend beyond the edge of the battery pack. During the processing of the cooling plate, the excess plate material needs to be removed, resulting in low material utilization, high cost, and limited capacity. Additional protective plates are required.

[0071] 3. Traditional battery pack cold plate brackets do not support the bottom crossbeam, resulting in high stress at the connection between the bottom crossbeam and the longitudinal beam. Under conditions such as transportation vibration, cracking, fatigue deformation and other failures are likely to occur.

[0072] 4. Traditional battery pack cold plate brackets require a dedicated bottom crossbeam to connect with the module fixing beam, which increases mold costs and weight, resulting in higher costs.

[0073] 5. For traditional battery pack liquid-cooled housings, when using structural adhesive to connect the liquid cooling plate to the bracket, it is necessary to develop a special pressure bonding tool to ensure the flatness of the housing after adhesive application.

[0074] 6. Traditional cold plate flow channels do not employ a flow diversion design at the inlet and outlet. When a larger flow rate is required, the flow resistance increases, the system efficiency is greatly reduced, and it may even fail to meet the heat dissipation requirements.

[0075] This utility model aims to solve the problems of high cost, insufficient strength, poor reliability, and difficulty in ensuring temperature uniformity of liquid-cooled plate housings for high-energy-density, large-capacity, large-size, and heavy battery packs.

[0076] The main technical points are as follows: 1. The inner sides of the crossbeam 22 and the longitudinal beam 24 have a stepped structure, forming three steps, which are used to fix the liquid cooling plate 1, the transverse reinforcing rib 92 and support the transverse reinforcing rib 92 respectively.

[0077] 2. A recessed liquid flow channel 16 is provided on the flow channel plate 5. Two inlet branch flow channels 162 and two outlet branch flow channels 166 are respectively provided at the inlet and outlet of the liquid flow channel 16. The upper plate 4 is basin-shaped and has two oblong protrusions at the inlet and outlet. A fluid channel is provided inside the adapter. The upper plate 4, flow channel plate 5, adapter, water inlet connector 82 and water outlet connector 84 are brazed to form a fluid channel. The fluid is divided into two branches after passing through the inlet and outlet.

[0078] 3. Remove the bottom rear crossbeam, set a notch on the rear frame and weld the connector, and connect it directly to the module fixing beam with bolts.

[0079] 4. The supporting beam has multiple protruding structures, which are connected to the supporting liquid cooling plate 1 and the front frame by structural adhesive to avoid stress concentration.

[0080] 5. A convex structure is provided on the flow channel plate 5, and the transverse reinforcing rib 92 can be riveted and fixed to the liquid cooling plate 1 by rivets.

[0081] 6. The transverse reinforcing rib 92 has a cavity inside, and a filling block is provided inside the cavity. When the transverse reinforcing rib 92 is connected and fixed, it is riveted from the outside of the transverse reinforcing rib 92 to connect and fix it to the filling block.

[0082] Specifically, the integrated liquid-cooled box includes: an upper plate 4, a flow channel plate 5, a connector, a water inlet connector 82, a longitudinal beam 24, a transverse beam 22, a transverse reinforcing rib 92, a supporting transverse beam, a fixing corner piece, a connector, a first module fixing beam, a second module fixing beam, and a limiting strip 94.

[0083] The integrated liquid-cooled box is formed by integrating cold plate components, steel brackets, and modular fixing beams into one unit.

[0084] The cold plate assembly is made of an upper plate 4, a flow channel plate 5, an adapter, an inlet connector 82, and an outlet connector 84, which are brazed together. The flow channel plate 5 is provided with a recessed liquid flow channel 16. The inlet and outlet of the liquid flow channel 16 are respectively provided with two branch flow channels. The upper plate 4 is basin-shaped and is provided with two oblong first protrusions 42. The adapter is provided with a fluid channel. After being brazed with the upper plate 4, the flow channel plate 5, the inlet connector 82, and the outlet connector 84, the fluid is divided into two branches after passing through the inlet and outlet, which can realize the diversion of large flow rates.

[0085] The steel bracket consists of longitudinal beams 24, transverse beams 22, transverse reinforcing ribs 92, supporting beams, fixing corner pieces, and connectors. The longitudinal beams 24 and transverse beams 22 are each provided with three steps to increase their body strength, and can also be used to fix the cold plate assembly, the transverse reinforcing ribs 92, and support the transverse reinforcing ribs 92, respectively.

[0086] The fixing corner brackets are used to connect the longitudinal beam 24 to the front frame, and also to connect the longitudinal beam 24 to the rear frame. The cold plate assembly is connected to the outer frame by rivet nuts.

[0087] The first and second module fixing beams can be made of steel roll forming or aluminum extrusion, and are connected to the outer frame and liquid cooling plate 1 by bolts.

[0088] The flow channel plate 5 is connected to the transverse reinforcing rib 92 and the supporting beam by structural adhesive.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one embodiment or example.

[0090] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A liquid cooling assembly, characterized in that, include: A liquid cooling plate, wherein the liquid cooling plate has a liquid flow channel inside and is provided with an inlet and an outlet communicating with the liquid flow channel; A support beam is provided around the circumferential outer side of the liquid cooling plate; The connecting frame is manufactured separately from the liquid cooling plate. The connecting frame is fixedly connected to the outer circumferential edge of the liquid cooling plate, and the connecting frame is fixed to the upper surface of the support beam.

2. The liquid cooling assembly according to claim 1, characterized in that, The liquid cooling plate includes: upper plate; A flow channel plate having a recessed flow channel portion, wherein the upper plate and the flow channel portion form the liquid flow channel; The connecting frame is connected to the outer circumferential edge of the upper plate.

3. The liquid cooling assembly according to claim 2, characterized in that, The liquid flow channel includes two interconnected inlet branch flow channels and a cooling flow channel. A first protrusion is provided on the upper plate. The first protrusion and the flow channel plate form a first cavity. The first cavity is connected to the two inlet branch flow channels and is also connected to the liquid inlet.

4. The liquid cooling assembly according to claim 3, characterized in that, The liquid flow channel also includes two liquid outlet branch channels, both of which are connected to the cooling flow channel. A second protrusion is provided on the upper plate, and the second protrusion and the flow channel plate form a second cavity. The second cavity is connected to the two liquid outlet branch channels and is also connected to the liquid outlet.

5. The liquid cooling assembly according to claim 1, characterized in that, The connecting frame is welded to the liquid cooling plate; and / or The inlet is circular, square, or polygonal in shape; and / or The shape of the liquid outlet is circular, square, or polygonal.

6. The liquid cooling assembly according to claim 1, characterized in that, Also includes: The first adapter includes a first inlet and a first outlet that are interconnected, the first outlet being connected to the liquid inlet, and the first inlet extending through the support beam to the outside of the liquid cooling assembly. The second adapter includes a second inlet and a second outlet that are interconnected. The second inlet is connected to the liquid outlet, and the second outlet extends through the support beam to the outside of the liquid cooling assembly.

7. The liquid cooling assembly according to claim 6, characterized in that, Also includes: A water inlet connector is located on the upper surface of the first adapter and is connected to the first inlet. The water outlet connector is located on the upper surface of the second adapter and is connected to the second outlet.

8. The liquid cooling assembly according to claim 1, characterized in that, The support beam includes two opposing crossbeams and two opposing longitudinal beams. The crossbeams extend in the width direction of the liquid cooling plate, and the longitudinal beams extend in the length direction of the liquid cooling plate. The two longitudinal beams and the two crossbeams enclose a receiving space, and at least a portion of the liquid cooling plate is located within the receiving space.

9. The liquid cooling assembly according to claim 8, characterized in that, The inner sides of the two longitudinal beams are provided with stepped portions, and the liquid cooling assembly further includes: A transverse reinforcing rib is connected to the lower surface of the liquid cooling plate, and the two ends of the transverse reinforcing rib overlap the stepped portions of the two longitudinal beams. Multiple limiting strips are provided on the upper surface of the liquid cooling plate, and the multiple limiting strips are spaced apart along the width direction of the liquid cooling plate. The extension direction of each limiting strip is the same as the length direction of the liquid cooling plate.

10. A liquid-cooled box, characterized in that, include: Box; According to any one of claims 1 to 9, the housing is disposed on the connecting frame, forming an installation space with the liquid cooling assembly, the installation space being used to install the battery module.

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