Liquid cooling plate and battery pack

Abstract

The utility model discloses a liquid cooling plate and a battery pack, the liquid cooling plate comprises a runner plate, a support plate and a reinforcing structure, and the runner plate is provided with a runner groove with an opening towards one side; the supporting plate is positioned at the opening of the runner groove and is connected with the runner plate; the reinforcing structure is located on the side, away from the runner plate, of the supporting plate and is opposite to the runner groove. According to the liquid cooling plate disclosed by the utility model, the reinforcing structure is arranged on the supporting plate and is used for increasing the overall rigidity of the liquid cooling plate, reducing the bending amount of the liquid cooling plate and improving the planeness of the liquid cooling plate, so that the liquid cooling plate is well attached to the battery module; the reinforcing structures can disperse external force borne by the supporting plates, prevent the runner grooves from deforming due to overlarge stress, guarantee normal flowing of cooling liquid in the runner grooves, achieve a good battery pack heat management effect and further improve the reliability of the liquid cooling plate in the long-term use process.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a liquid cooling plate and a battery pack. Background Technology

[0002] In related technologies, for the design of bottom-mounted cold plates in battery packs, especially large-sized cold plates, the large size span of the entire cold plate and the certain weight load in the shear direction will cause the cold plate to bend and deform in the module bearing area during long-term use, reducing the fit between the cold plate and the battery module and affecting the heat dissipation function of the cold plate. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to provide a liquid cooling plate with a reinforcing structure on a support plate. The reinforcing structure increases the overall rigidity of the liquid cooling plate, reduces the bending amount of the liquid cooling plate, and improves the flatness of the liquid cooling plate, thereby achieving a good fit between the liquid cooling plate and the battery module and improving the reliability of the liquid cooling plate during long-term use.

[0004] This utility model also proposes a battery pack having the above-mentioned liquid cooling plate.

[0005] According to a first aspect of the present invention, a liquid cooling plate includes: a flow channel plate having a flow channel groove opening to one side; a support plate located at the opening of the flow channel groove and connected to the flow channel plate; and a reinforcing structure located on the side of the support plate away from the flow channel plate, the reinforcing structure being disposed opposite to the flow channel groove.

[0006] According to the embodiment of this utility model, a reinforcing structure is provided on the support plate of the liquid cooling plate. The reinforcing structure increases the overall rigidity of the liquid cooling plate, reduces the bending amount of the liquid cooling plate, and improves the flatness of the liquid cooling plate, thereby achieving a good fit between the liquid cooling plate and the battery module. Furthermore, the reinforcing structure is arranged opposite to the flow channel groove, which can disperse the external force on the support plate, prevent the flow channel groove from deforming due to excessive force, ensure the normal flow of coolant in the flow channel groove, achieve better thermal management effect of the battery pack, and further improve the reliability of the liquid cooling plate during long-term use.

[0007] According to some embodiments of the present invention, the reinforcing structure includes multiple reinforcing units, which are arranged in a row and column manner. Each reinforcing unit includes a first reinforcing rib disposed on the side of the support plate. The first reinforcing ribs are connected end to end, and the pattern formed is at least one of polygon, circle or ellipse.

[0008] According to some embodiments of the present invention, a plurality of the reinforcing units are arranged in sequence abutting against each other.

[0009] According to some embodiments of the present invention, the reinforcing unit further includes a second reinforcing rib and a third reinforcing rib, both of which are located within the first reinforcing rib. The second and third reinforcing ribs intersect and are both connected to the first reinforcing rib, wherein the height of the second and third reinforcing ribs in the third direction is flush with the height of the first reinforcing rib in the third direction.

[0010] According to some embodiments of the present invention, both the second reinforcing rib and the third reinforcing rib are provided in multiples, the multiple second reinforcing ribs are arranged along the first direction, the multiple third reinforcing ribs are arranged along the second direction, each second reinforcing rib is connected to the multiple third reinforcing ribs, and the first direction is perpendicular to the second direction.

[0011] According to some embodiments of the present invention, the reinforcing unit further includes a plurality of reinforcing rings, all of which are located inside the first reinforcing rib. The reinforcing rings are at least one of circular or elliptical shapes. The plurality of reinforcing rings are sequentially sleeved in the direction from the center of the first reinforcing rib to the edge of the first reinforcing rib, wherein the height of the reinforcing rings in the third direction is flush with the height of the first reinforcing rib in the third direction.

[0012] According to some embodiments of the present invention, the liquid cooling plate further includes: thermally conductive adhesive, the thermally conductive adhesive being located inside the first reinforcing rib, and the thickness of the thermally conductive adhesive in the third direction being flush with the height of the first reinforcing rib in the third direction.

[0013] According to some embodiments of this utility model, the height of the reinforcing structure in the third direction is D, which satisfies 0.5mm≤D≤2.5mm.

[0014] According to some embodiments of this utility model, the reinforcing structure and the supporting plate are integrally formed.

[0015] A battery pack according to a second aspect of the present invention includes: a liquid cooling plate according to the first aspect of the present invention described above.

[0016] According to the battery pack of this utility model embodiment, by setting the above-mentioned liquid cooling plate, the overall rigidity of the liquid cooling plate can be increased, the bending amount of the liquid cooling plate can be reduced, and the flatness of the liquid cooling plate can be improved, thereby achieving a good fit between the liquid cooling plate and the battery module. It can also prevent the flow channel groove from deforming due to excessive force, ensure the normal flow of coolant in the flow channel groove, achieve a better thermal management effect of the battery pack, and further improve the reliability of the liquid cooling plate during long-term use.

[0017] 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

[0018] 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:

[0019] Figure 1 This is a schematic diagram of a liquid cooling plate according to some embodiments of the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of the liquid cooling plate from another direction;

[0021] Figure 3 yes Figure 2 Schematic diagram of the liquid cooling plate;

[0022] Figure 4 yes Figure 1 Cross-sectional view of the liquid cooling plate;

[0023] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic diagram of a liquid cooling plate according to a second embodiment of the present invention;

[0025] Figure 7 yes Figure 6 Schematic diagram of the liquid cooling plate;

[0026] Figure 8 yes Figure 6 Cross-sectional view of the liquid cooling plate;

[0027] Figure 9 yes Figure 8 Enlarged view of point B in the middle;

[0028] Figure 10 This is a schematic diagram of a liquid cooling plate according to a third embodiment of the present invention;

[0029] Figure 11 yes Figure 10 Schematic diagram of the liquid cooling plate;

[0030] Figure 12 yes Figure 10 Cross-sectional view of the liquid cooling plate;

[0031] Figure 13 yes Figure 12 Enlarged view of point C in the middle;

[0032] Figure 14This is a schematic diagram of a liquid cooling plate according to a fourth embodiment of the present invention;

[0033] Figure 15 yes Figure 14 Schematic diagram of the liquid cooling plate;

[0034] Figure 16 yes Figure 14 Cross-sectional view of the liquid cooling plate;

[0035] Figure 17 yes Figure 16 Enlarged view of point D in the middle.

[0036] Figure label:

[0037] 100. Liquid cooling plate;

[0038] 10. Flow channel plate; 11. Flow channel groove;

[0039] 20. Support plate;

[0040] 30. Reinforced structure; 31. Reinforced unit; 311. First reinforcing rib; 312. Second reinforcing rib; 313. Third reinforcing rib; 314. Reinforcing ring. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] The following is for reference. Figures 1-17 Description of a liquid cooling plate 100 according to an embodiment of the present utility model.

[0045] According to a first aspect embodiment of the present invention, a liquid cooling plate 100 is located on at least one side of a battery module for heat dissipation. The liquid cooling plate 100 includes a flow channel plate 10 and a support plate 20. The flow channel plate 10 has a flow channel groove 11 opening to one side, which serves as a channel for coolant flow. The support plate 20 is located at the opening of the flow channel groove 11 and is connected to the flow channel plate 10 to seal the flow channel groove 11 and prevent coolant leakage. Coolant flows within the flow channel groove 11 to remove heat from the battery module. The shape and size of the flow channel groove 11 are designed according to the specific application scenario and heat dissipation requirements of the liquid cooling plate 100; the flow channel groove 11 can be designed as a meandering shape.

[0046] The liquid cooling plate 100 also includes a reinforcing structure 30, which is located on the side of the support plate 20 away from the flow channel plate 10. During the use of the liquid cooling plate 100, it may be subjected to various external forces, such as compression during installation and vibration during transportation. The reinforcing structure 30 can increase the overall rigidity of the liquid cooling plate 100, reduce the bending amount of the liquid cooling plate 100, and improve the flatness of the liquid cooling plate 100, thereby ensuring a good fit between the liquid cooling plate 100 and the battery module, achieving better battery pack thermal management, and further improving the reliability of the liquid cooling plate 100 during long-term use.

[0047] For example, the reinforcing structure 30 can be fixed to the support plate 20 by means of casting, welding or other methods.

[0048] When the liquid cooling plate 100 is installed on at least one side of the battery module, the support plate 20 is located on the side of the flow channel plate 10 closer to the battery module, and the reinforcing structure 30 is located between the battery module and the support plate 20. The reinforcing structure 30 is located at the position opposite to the support plate 20 and the flow channel 11. When the liquid cooling plate 100 is subjected to external force, the reinforcing structure 30 can further increase the structural strength of the support plate 20. The relative position of the reinforcing structure 30 and the flow channel 11 can effectively disperse these external forces, prevent the flow channel 11 from deforming due to excessive force, ensure the normal flow of coolant in the flow channel 11, and thus maintain the heat dissipation function of the liquid cooling plate 100.

[0049] According to the embodiment of the present invention, the liquid cooling plate 100 has a reinforcing structure 30 on the support plate 20. The reinforcing structure 30 increases the overall rigidity of the liquid cooling plate 100, reduces the bending amount of the liquid cooling plate 100, and improves the flatness of the liquid cooling plate 100, thereby achieving a good fit between the liquid cooling plate 100 and the battery module. The reinforcing structure 30 is arranged opposite to the flow channel 11, which can disperse the external force on the support plate 20, prevent the flow channel 11 from deforming due to excessive force, ensure the normal flow of coolant in the flow channel 11, and achieve a better thermal management effect for the battery pack, thereby further improving the reliability of the liquid cooling plate 100 during long-term use.

[0050] According to some embodiments of this utility model, refer to Figure 3 , Figure 7 , Figure 10 , Figure 15 The reinforcing structure 30 includes multiple reinforcing units 31 arranged in a row and column pattern. This row and column arrangement allows for a more uniform force distribution within the plane, and the regular arrangement enables the force to be transmitted more evenly in all directions, thereby effectively enhancing the overall stability of the liquid cooling plate 100. When the liquid cooling plate 100 is subjected to external pressure (such as compression during installation or vibration in the operating environment), the row and column arrangement allows each reinforcing unit 31 to share the pressure, reducing local stress concentration.

[0051] Each reinforcing unit 31 includes a first reinforcing rib 311 disposed on the side of the support plate 20. The first reinforcing ribs 311 are connected end to end, and the pattern they form is at least one of a polygon, a circle, or an ellipse. The first reinforcing ribs 311 form a polygonal pattern, which can disperse pressure in different planar directions. During the use of the liquid cooling plate 100, the liquid cooling plate 100 is subjected to a force in one direction. The sides of the polygon can transmit and disperse the force along its own direction, protecting the flow channel 11 from external forces.

[0052] The first reinforcing rib 311 can also be circular or elliptical, which is a geometric shape that distributes stress evenly in all directions. When the first reinforcing rib 311 forms a circular or elliptical shape, it can evenly distribute pressure around the center when the liquid cooling plate 100 is subjected to external forces from different angles. Moreover, the circular or elliptical first reinforcing rib 311 can facilitate smoother heat conduction in the circumferential direction, preventing heat from concentrating in a corner and helping to improve the heat dissipation efficiency of the liquid cooling plate 100.

[0053] For example, the first reinforcing rib 311 can be a polygon; or, the first reinforcing rib 311 can be a polygon or a circle; furthermore, the first reinforcing rib 311 can be a polygon, a circle or an ellipse.

[0054] For example, the first reinforcing rib 311 can be a triangle, quadrilateral, pentagon or hexagon, etc.; it can also be a triangle, quadrilateral, pentagon or hexagon with irregular sides; or a triangle, quadrilateral, pentagon or hexagon with equilateral sides, etc.

[0055] According to some embodiments of this utility model, refer to Figure 2-Figure 3 Multiple reinforcing units 31 are arranged in sequence, allowing force to be transferred from one reinforcing unit 31 to the next, thus avoiding stress concentration in certain specific areas. The sequential arrangement of multiple reinforcing units 31 ensures the uniform distribution of external force on the reinforcing structure 30, thereby protecting the structural integrity of the liquid cooling plate 100.

[0056] For example, when the liquid cooling plate 100 is applied inside the battery pack of a car, the vibrations during the car's operation and the impact forces generated by complex road conditions will be evenly distributed on the entire reinforced structure 30, reducing the risk of deformation or damage to the flow channel 11 due to excessive local stress.

[0057] According to some embodiments of this utility model, refer to Figure 7 , Figure 11 The reinforcing unit 31 also includes a second reinforcing rib 312 and a third reinforcing rib 313. The second reinforcing rib 312 and the third reinforcing rib 313 are both located inside the first reinforcing rib 311. The second reinforcing rib 312 and the third reinforcing rib 313 intersect and are both connected to the first reinforcing rib 311. The second reinforcing rib 312 and the third reinforcing rib 313 can support the first reinforcing rib 311 and can further enhance the structural strength of the reinforcing unit 31.

[0058] The second reinforcing rib 312 and the third reinforcing rib 313 are at the same height as the first reinforcing rib 311 in the third direction, providing additional support for the reinforcing unit 31 in three-dimensional space. When the liquid cooling plate 100 is subjected to external forces, especially forces perpendicular to the plane of the liquid cooling plate 100 (third direction), the second reinforcing rib 312 and the third reinforcing rib 313 can share the pressure borne by the first reinforcing rib 311, working together with the first reinforcing rib 311 to enhance the compressive strength of the entire reinforcing unit 31.

[0059] The structure in which the second reinforcing rib 312 and the third reinforcing rib 313 intersect and are both connected to the first reinforcing rib 311 increases the channels and directions for heat conduction, enabling heat to diffuse more quickly and evenly within the reinforcing unit 31, avoiding local heat accumulation, and improving the overall heat dissipation efficiency of the liquid cooling plate 100.

[0060] When the liquid cooling plate 100 is subjected to local pressure, the second reinforcing rib 312 and the third reinforcing rib 313 can share the force borne by the first reinforcing rib 311, preventing the first reinforcing rib 311 from deforming due to excessive force, thereby better maintaining the shape and stability of the reinforcing unit 31.

[0061] According to some embodiments of this utility model, refer to Figures 10-11 Both the second reinforcing rib 312 and the third reinforcing rib 313 are provided in multiples, with the multiple second reinforcing ribs 312 along the first direction (for example, refer to the attached diagram). Figure 11 Multiple third reinforcing ribs 313 are arranged at intervals along the second direction (e1 direction, for example, refer to the appendix). Figure 11 The second reinforcing ribs 312 are arranged at intervals in the e2 direction, and each second reinforcing rib 312 is connected to multiple third reinforcing ribs 313. The first direction is perpendicular to the second direction. The second reinforcing ribs 312 and the third reinforcing ribs 313 form a grid system. The crisscrossing arrangement of the second reinforcing ribs 312 and the third reinforcing ribs 313 can significantly improve the load-bearing capacity of the liquid cooling plate 100 and enhance the deformation resistance of the liquid cooling plate 100 in all directions in the plane.

[0062] According to some embodiments of this utility model, refer to Figures 14-16 The reinforcing unit 31 also includes a plurality of reinforcing rings 314, all of which are located inside the first reinforcing rib 311. The reinforcing rings 314 are at least one of circular or elliptical shapes. The plurality of reinforcing rings 314 are sequentially nested in the direction from the center of the first reinforcing rib 311 to the edge of the first reinforcing rib 311.

[0063] The reinforcing ring 314 is flush with the height of the first reinforcing rib 311 in the third direction, providing additional support for the reinforcing unit 31 in three-dimensional space. When the liquid cooling plate 100 is subjected to external forces, especially forces perpendicular to the plane of the liquid cooling plate 100 (third direction), the reinforcing ring 314 can share the pressure borne by the first reinforcing rib 311, working together with the first reinforcing rib 311 to enhance the compressive strength of the entire reinforcing unit 31.

[0064] According to some embodiments of this utility model, refer to Figure 3 , Figure 7 , Figure 11 and Figure 15 The liquid cooling plate 100 also includes a thermally conductive adhesive, which is located within the first reinforcing rib 311. The thickness of the thermally conductive adhesive in the third direction is flush with the height of the first reinforcing rib 311 in the third direction. The thermally conductive adhesive can be evenly distributed within the first reinforcing rib 311, ensuring the uniformity of the adhesive coating thickness, thereby enabling the liquid cooling plate 100 to achieve its optimal design state and improve cooling efficiency.

[0065] Thermally conductive adhesive has a high thermal conductivity, and it can transfer heat more effectively than media such as air.

[0066] In a specific example, the reinforcing structure 30 includes a second reinforcing rib 312 and a third reinforcing rib 313, or the reinforcing structure 30 includes multiple reinforcing rings 314. The height of the second reinforcing rib 312 and the third reinforcing rib 313 in the third-party direction is flush with the height of the first reinforcing rib 311 in the third-party direction. The thickness of the thermally conductive adhesive in the third-party direction is flush with the height of the first reinforcing rib 311, the second reinforcing rib 312, the third reinforcing rib 313, and the reinforcing rings 314 in the third-party direction, thus making the thermally conductive adhesive flush with the second reinforcing rib 312 and the third reinforcing rib 313 or the multiple reinforcing rings 314 in the third-party direction. The thermally conductive adhesive can better bond the structural components such as the second reinforcing rib 312 and the third reinforcing rib 313 or the multiple reinforcing rings 314 together, preventing relative displacement between these structural components when the liquid cooling plate 100 is subjected to external force, and maintaining the integrity of the reinforcing structure 30.

[0067] According to some embodiments of this utility model, refer to Figures 4-5 , Figures 8-9 , Figures 12-13 , Figures 16-17 The height of the reinforcing structure 30 in the third direction is D, which satisfies 0.5mm≤D≤2.5mm. The height of the reinforcing structure 30 in the third direction meets this range, which can satisfy the structural performance of the reinforcing structure 30 itself, and will not excessively increase the weight of the liquid cooling plate 100.

[0068] For example, the height of the reinforcing structure 30 in the third direction can be 0.5mm, 1.0mm, 1.5mm, 2.0mm, or 2.5mm, etc.

[0069] For example, if the height of the reinforcing structure 30 in the third direction is less than 0.5mm, the reinforcing structure 30 may be too weak and unable to withstand the external forces during normal use, causing the support plate 20 or the flow channel 11 of the liquid cooling plate 100 to deform, affecting the normal function of the liquid cooling plate 100.

[0070] For example, if the height of the reinforcing structure 30 in the third direction is greater than 2.5mm, the excessive height of the reinforcing structure 30 in the third direction may cause uneven heat transfer, and the excessively tall reinforcing structure 30 will also increase the weight of the liquid cooling plate 100.

[0071] According to some embodiments of this utility model, refer to Figures 1-3 The reinforcing structure 30 and the support plate 20 are integrally formed parts. There are no gaps or weak connection points between the reinforcing structure 30 and the support plate 20. When the support plate 20 is subjected to external pressure or vibration, there will be no structural damage caused by loosening or breakage of the connection parts.

[0072] The integral molding makes the reinforcing structure 30 and the support plate 20 a unified mechanical structure. Compared with the connection methods such as welding and riveting, integral molding can make better use of the mechanical properties of the material, and significantly improve the rigidity of the entire liquid cooling plate 100.

[0073] The one-piece molding process reduces the steps of manufacturing the reinforcing structure 30 and the support plate 20 separately and then connecting them, which not only saves manufacturing time but also reduces potential quality problems caused by the connection process. For example, it avoids the need to inspect and repair welding defects (such as porosity and cracks) during the welding process, thus improving production efficiency and product quality consistency.

[0074] A battery pack according to a second aspect of the present invention includes a liquid cooling plate 100 according to the first aspect of the present invention described above.

[0075] According to the battery pack of this utility model embodiment, by setting the above-mentioned liquid cooling plate 100, the overall rigidity of the liquid cooling plate 100 can be increased, the bending amount of the liquid cooling plate 100 can be reduced, and the flatness of the liquid cooling plate 100 can be improved, thereby achieving a good fit between the liquid cooling plate 100 and the battery module. It can also prevent the flow channel groove 11 from deforming due to excessive force, ensure the normal flow of coolant in the flow channel groove 11, achieve a better thermal management effect of the battery pack, and further improve the reliability of the liquid cooling plate 100 during long-term use.

[0076] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," 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 the present invention. 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 one or more embodiments or examples.

[0077] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A liquid-cooled plate, characterized in that, include: A flow channel plate having flow channel grooves opening to one side; A support plate, which is located at the opening of the flow channel groove and is connected to the flow channel plate; A reinforcing structure is provided, located on the side of the support plate away from the flow channel plate, and the reinforcing structure is disposed opposite to the flow channel groove.

2. The liquid cooling plate according to claim 1, characterized in that, The reinforcing structure includes multiple reinforcing units arranged in a row and column. Each reinforcing unit includes a first reinforcing rib disposed on the side of the support plate. The first reinforcing ribs are connected end to end, and the pattern they form is at least one of a polygon, a circle, or an ellipse.

3. The liquid cooling plate according to claim 2, characterized in that, Multiple reinforcing units are arranged in sequence, abutting each other.

4. The liquid cooling plate according to claim 2, characterized in that, The reinforcing unit further includes a second reinforcing rib and a third reinforcing rib, both of which are located within the first reinforcing rib. The second and third reinforcing ribs intersect and are both connected to the first reinforcing rib, wherein the height of the second and third reinforcing ribs in the third direction is flush with the height of the first reinforcing rib in the third direction.

5. The liquid cooling plate according to claim 4, characterized in that, The second reinforcing rib and the third reinforcing rib are provided in multiples. The multiple second reinforcing ribs are arranged along the first direction, and the multiple third reinforcing ribs are arranged along the second direction. Each second reinforcing rib is connected to the multiple third reinforcing ribs. The first direction is perpendicular to the second direction.

6. The liquid cooling plate according to claim 2, characterized in that, The reinforcing unit further includes multiple reinforcing rings, all of which are located within the first reinforcing rib. Each reinforcing ring is at least one of a circle or an ellipse. The multiple reinforcing rings are sequentially nested in the direction from the center of the first reinforcing rib to its edge, wherein the height of the reinforcing rings in the third direction is flush with the height of the first reinforcing rib in the third direction.

7. The liquid cooling plate according to claim 2, characterized in that, Also includes: Thermally conductive adhesive is located inside the first reinforcing rib, and the thickness of the thermally conductive adhesive in the third direction is flush with the height of the first reinforcing rib in the third direction.

8. The liquid cooling plate according to claim 1, characterized in that, The height of the reinforcing structure in the third direction is D, which satisfies 0.5mm≤D≤2.5mm.

9. The liquid cooling plate according to claim 1, characterized in that, The reinforcing structure and the support plate are integrally formed.

10. A battery pack, characterized in that, include: The liquid cooling plate according to any one of claims 1-9.

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