Liquid cooling system and battery pack

Abstract

The utility model relates to battery technology field, concretely provides a liquid cooling system and battery package, aims at solving the problem of poor sealing effect of the inlet and outlet water of cooling system and box. For this, the utility model's liquid cooling system includes box, sealing block, liquid cooling plate and inlet and outlet water joint. Wherein, the first through -hole and second through -hole are seted up in the box, and the first through -hole and second through -hole all are provided with the first recess; The sealing block is installed in the first recess, the surface of sealing block is provided with the first convex rib that is compatible with the first recess, and the sealing block is penetrated and is seted up with the third through -hole; The inlet and outlet water joint includes water inlet joint and water outlet joint, and the third through -hole of the sealing block in the first through -hole is worn and is seted up in the third through -hole of the sealing block in the second through -hole. Through the first recess and the first convex rib cooperation, the utility model liquid cooling system can enhance the sealing between inlet and outlet water joint and box, thereby effectively preventing the leakage of coolant.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically providing a liquid cooling system and a battery pack. Background Technology

[0002] During operation, the performance of lithium-ion battery packs used in energy storage is significantly affected by temperature. A good heat dissipation system is crucial for ensuring battery pack performance and extending its lifespan. Liquid cooling systems have become a common solution for heat dissipation in energy storage battery packs due to their significant heat dissipation effect and flexible design. Among them, the harmonica tube liquid cooling system is widely used in the energy storage field due to its advantages such as simple structure, high production efficiency, ease of mass production, and lightweight design.

[0003] The sealing structure between the inlet / outlet of the harmonica tube liquid cooling system and the housing is crucial for ensuring the system's normal operation. In practical applications, poor sealing can lead to a series of serious problems. On the one hand, external dust can easily accumulate inside the battery pack, affecting its heat dissipation and electrical performance. On the other hand, water ingress can cause short circuits in the cells, not only rendering the battery pack malfunction but also potentially causing fires, explosions, and other safety accidents, resulting in significant economic losses and safety hazards for users.

[0004] In existing technologies, rubber rings or rubber gaskets are commonly used to seal the inlet / outlet and the battery pack housing. However, rubber materials are prone to aging and deformation during long-term use, leading to a gradual deterioration in sealing performance. This makes it difficult to maintain stable waterproof performance over the long term, thus failing to meet the sealing reliability requirements of lithium-ion battery packs used for energy storage.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0006] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem of poor sealing effect between the inlet and outlet of the existing cooling system and the housing.

[0007] In a first aspect, the present invention provides a liquid cooling system, comprising:

[0008] The housing has a first through hole and a second through hole spaced apart from each other, and a first groove is provided in both the first through hole and the second through hole.

[0009] A sealing block is installed in each corresponding first groove. The surface of each sealing block is provided with a first rib that is adapted to the corresponding first groove. The sealing block is provided with a third through hole.

[0010] A liquid cooling plate is installed in the housing. The liquid cooling plate includes an inlet, an outlet, and a cold liquid flow channel that is connected to the inlet and the outlet respectively.

[0011] The water inlet and outlet connector includes a water inlet connector and a water outlet connector spaced apart from each other, wherein the water inlet connector passes through the third through hole of the sealing block located in the first through hole and communicates with the water inlet, and the water outlet connector passes through the third through hole of the sealing block located in the second through hole and communicates with the water outlet.

[0012] In the preferred embodiment of the above liquid cooling system, a second rib is provided on the wall of each of the third through holes, and a second groove adapted to the corresponding second rib is provided on the surface of the water inlet connector and the water outlet connector, respectively.

[0013] In the preferred embodiment of the above-mentioned liquid cooling system, at the end of each of the third through holes, the surface of the sealing block protrudes outward to form a third rib, the third rib surrounds the third through hole, and a fourth rib corresponding to the third rib is respectively provided on the surface of the water inlet connector and the water outlet connector, the third rib being able to abut against the fourth rib.

[0014] In the preferred embodiment of the liquid cooling system described above, the first groove is trapezoidal in shape, and the cross-sectional area of ​​the opening of the first groove is larger than the cross-sectional area of ​​the bottom of the first groove.

[0015] In the preferred embodiment of the liquid cooling system described above, multiple first ribs and multiple first grooves are provided at intervals, and the multiple first ribs correspond one-to-one with the multiple first grooves.

[0016] In the preferred embodiment of the liquid cooling system described above, multiple second ribs and multiple second grooves are provided at intervals, and the multiple second ribs correspond one-to-one with the multiple second grooves.

[0017] In the preferred embodiment of the liquid cooling system described above, the first rib and the first groove are interference-fitted.

[0018] In the preferred embodiment of the liquid cooling system described above, the second rib and the second groove are interference-fitted.

[0019] In the preferred embodiment of the above liquid cooling system, the housing includes an upper cover, a lower housing, and a sealing gasket. The upper cover is disposed above the lower housing, the sealing gasket is disposed between the upper cover and the lower housing, and the first through hole and the second through hole are formed on the lower housing.

[0020] In a second aspect, the present invention also provides a battery pack, the battery pack including a battery module and a liquid cooling system of any of the above, wherein the battery module is installed in the housing of the liquid cooling system.

[0021] Those skilled in the art will understand that this utility model provides a liquid cooling system, including a housing, a sealing block, a liquid cooling plate, and inlet / outlet water connectors. The housing has a first through hole and a second through hole spaced apart from each other, and a first groove is provided in each of the first and second through holes. The sealing block is installed in each corresponding first groove, and the surface of the sealing block is provided with a first rib adapted to the corresponding first groove. The sealing block has a third through hole. The liquid cooling plate is installed in the housing and includes an inlet, an outlet, and a cold liquid flow channel, wherein the cold liquid flow channel connects to the inlet and the outlet respectively. The inlet / outlet water connectors include an inlet connector and an outlet connector spaced apart from each other. The inlet connector passes through the third through hole of the sealing block located in the first through hole and connects to the inlet. The outlet connector passes through the third through hole of the sealing block located in the second through hole and connects to the outlet. By employing the above technical means, this utility model can improve the sealing performance between the inlet / outlet water connectors and the housing. Specifically, a first groove is provided in the through hole of the housing, and a first rib adapted to the first groove is provided on the surface of the sealing block to enhance the sealing performance. The third through hole of the sealing block provides a precise channel while ensuring that the sealing block and the housing fit tightly, thereby improving structural stability and enhancing the sealing performance of the liquid cooling system.

[0022] Furthermore, each of the third through holes in this invention is provided with a second rib on its hole wall, and the surfaces of the inlet and outlet connectors are provided with second grooves that match the corresponding second ribs. This structural design helps to prevent coolant leakage in the gap between the inlet / outlet connectors and the sealing block, further improving the sealing performance of the liquid cooling system.

[0023] Furthermore, at the end of each third through hole of this utility model, the surface of the sealing block protrudes outward to form a third rib, the third rib surrounds the third through hole, and a fourth rib corresponding to the third rib is respectively provided on the surface of the water inlet connector and the water outlet connector, the third rib can abut against the fourth rib.

[0024] Furthermore, each of the first grooves is trapezoidal in shape, and the cross-sectional area of ​​the opening of the first groove is larger than the cross-sectional area of ​​the bottom of the first groove. This structural design allows for a tighter fit between the sealing block and the first groove, further enhancing the sealing effect and effectively preventing coolant leakage.

[0025] Furthermore, multiple first ribs and multiple first grooves are provided at intervals, with each first rib corresponding to one of the multiple first grooves. This structural design effectively blocks leakage channels for coolant, greatly improving the sealing performance of the liquid cooling system.

[0026] Furthermore, multiple second ribs and multiple second grooves are provided at intervals, with each second rib corresponding to a different second groove. This structural design effectively prevents coolant leakage between the joint and the sealing block, further improving the sealing performance of the liquid cooling system. Attached Figure Description

[0027] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0028] Figure 1 This is an exploded view of the liquid cooling system of this utility model;

[0029] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0030] Figure 3 This is a schematic diagram of the sealing block of this utility model. Figure 1 ;

[0031] Figure 4 This is a schematic diagram of the sealing block of this utility model. Figure 2 ;

[0032] Figure 5 This is a cross-sectional view of the liquid cooling system of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the liquid cooling plate of this utility model;

[0034] Figure 7 yes Figure 6 A magnified view of a section at point B.

[0035] List of reference numerals in the attached diagram:

[0036] 1. Box body; 11. Top cover; 12. Lower box body; 121. First through hole; 122. Second through hole; 123. First groove; 13. Sealing gasket;

[0037] 2. Sealing block; 21. First rib; 22. Third through hole; 221. Second rib; 23. Third rib;

[0038] 3. Liquid cooling plate; 31. Inlet; 32. Outlet; 33. Cooling liquid flow channel;

[0039] 4. Water inlet / outlet connector; 41. Water inlet connector; 42. Water outlet connector; 43. Second groove; 44. Fourth rib. Detailed Implementation

[0040] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the following embodiments are described in conjunction with a liquid cooling system for a battery pack, the liquid cooling system provided by the present invention is equally applicable to other products that require solving the problem of poor sealing at the inlet and outlet of the liquid cooling system.

[0041] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Based on the problem of poor sealing between the inlet / outlet of the existing cooling system and the housing as pointed out in the background art, this utility model provides a liquid cooling system, which aims to form a seal between the inlet / outlet of the liquid cooling system and the housing by means of a sealing block, so as to effectively solve the problem of poor sealing between the inlet / outlet of the existing cooling system and the housing.

[0043] like Figures 1 to 7 As shown, this utility model provides a liquid cooling system, including a housing 1, a sealing block 2, a liquid cooling plate 3, and an inlet / outlet water connector 4. The housing 1 has a first through hole 121 and a second through hole 122 spaced apart from each other, and a first groove 123 is provided in both the first through hole 121 and the second through hole 122. A sealing block 2 is installed in each corresponding first groove 123. The surface of the sealing block 2 is provided with a first rib 21 that matches the corresponding first groove 123. The sealing block 2 has a third through hole 22. A liquid cooling plate 3 is installed in the housing 1. The liquid cooling plate 3 includes an inlet 31, an outlet 32, and a cold liquid flow channel 33 that communicates with the inlet 31 and the outlet 32 ​​respectively. The water inlet and outlet connectors 4 include an inlet connector 41 and an outlet connector 42 spaced apart from each other. The inlet connector 41 passes through the third through hole 22 of the sealing block 2 located in the first through hole 121 and is connected to the inlet 31. The outlet connector 42 passes through the third through hole 22 of the sealing block 2 located in the second through hole 122 and is connected to the outlet 32.

[0044] The housing 1 is the basic support structure of the liquid cooling system of this utility model. It has a first through hole 121 and a second through hole 122 for installing the inlet / outlet water connectors 4. Furthermore, a first groove 123 (e.g., ...) is provided inside both the first through hole 121 and the second through hole 122. Figure 2As shown, the design of the first groove 123 provides a basis for positioning and structural adaptation for the subsequent installation of the sealing block 2.

[0045] Preferably, such as Figure 1 As shown, the box 1 includes an upper cover 11, a lower box 12 and a sealing gasket 13. The upper cover 11 is placed on top of the lower box 12, and the sealing gasket 13 is placed between the upper cover 11 and the lower box 12. The first through hole 121 and the second through hole 122 are opened on the lower box 12.

[0046] The upper cover 11 is located above the lower housing 12 and is attached to the lower housing 12 by means of bolts, snaps, etc. Together, they form a relatively enclosed space to accommodate other components of the liquid cooling system.

[0047] The sealing gasket 13 is disposed between the upper cover 11 and the lower housing 12, which can effectively fill the gap between the two and enhance the sealing effect. Compared with the sealing of the contact surface of the upper cover 11 and the lower housing 12 alone, the sealing gasket 13 can provide a more reliable sealing guarantee, reduce the risk of coolant leakage, and improve the overall sealing performance of the liquid cooling system.

[0048] The sealing block 2 is a key component for achieving the sealing function. It is installed in the first groove 123, and its surface is provided with a first rib 21 that matches the first groove 123 (e.g., Figure 3 and Figure 4 (As shown). This design of the convex ribs and grooves ensures the stable installation of the sealing block 2 in the through hole of the housing 1, preventing its displacement and effectively preventing gaps between the sealing block 2 and the housing 1. This greatly improves the sealing effect between the inlet / outlet water connector 4 and the housing 1, avoiding the problem of coolant leakage.

[0049] Preferably, such as Figure 5 As shown, the first grooves 123 are all trapezoidal in shape, and the cross-sectional area of ​​the opening of the first groove 123 is larger than the cross-sectional area of ​​the bottom of the first groove 123.

[0050] The present invention designs the cross-sectional area of ​​the opening of the first groove 123 (i.e. the side near the surface of the box 1) to be larger than the cross-sectional area of ​​the bottom of the first groove 123 (i.e. the side near the inside of the box 1), so that the cross-sectional area gradually decreases from the opening of the first groove 123 to the bottom of the groove, presenting a tapered shape.

[0051] The trapezoidal structure of the first groove 123 has a larger cross-sectional area at its opening, providing greater operating space and tolerance for the installation of the sealing block 2. Even if there is a certain deviation between the sealing block 2 and the first groove 123 during installation, the sealing block 2 can still be easily placed into the first groove 123, reducing installation difficulty and improving installation efficiency.

[0052] Furthermore, after the sealing block 2 is installed in the first groove 123, due to the tapered design of the trapezoidal groove, the sealing block 2 will be subjected to compressive force from the side wall of the groove. This compressive force makes the sealing block 2 and the first groove 123 form a tighter fit. At the same time, the first rib 21 on the surface of the sealing block 2 can fit better with the side wall of the trapezoidal groove, further enhancing the sealing effect and effectively preventing coolant leakage.

[0053] The third through hole 22 of the sealing block 2 provides a precise passage for the inlet / outlet water connector 4, ensuring the accuracy and stability of the installation of the inlet / outlet water connector 4. At the same time, the tight fit between the sealing block 2 and the housing 1, as well as the proper installation of the inlet / outlet water connector 4 and the sealing block 2, makes the structure of the entire liquid cooling system more stable, reducing the risk of structural loosening and seal failure caused by factors such as vibration and temperature changes.

[0054] like Figure 6 As shown, the liquid cooling plate 3 is installed inside the housing 1 and is the core component of the liquid cooling system to achieve the cooling function. It includes an inlet 31, an outlet 32, and a coolant flow channel 33. The coolant flow channel 33 connects the inlet 31 and the outlet 32. The coolant enters the coolant flow channel 33 through the inlet 31, flows in the channel to remove heat, and then flows out from the outlet 32, thereby cooling the relevant equipment.

[0055] The inlet and outlet water connector 4 consists of an inlet connector 41 and an outlet connector 42. The inlet connector 41 passes through the third through hole 22 of the sealing block 2 located in the first through hole 121 and is connected to the water inlet 31 of the liquid cooling plate 3, so that the coolant can enter the liquid cooling plate 3 through the inlet connector 41; the outlet connector 42 passes through the third through hole 22 of the sealing block 2 located in the second through hole 122 and is connected to the water outlet 32 ​​of the liquid cooling plate 3, so that the cooled liquid can be discharged through the outlet connector 42.

[0056] This invention improves the sealing performance between the water outlet connector 42, the water inlet connector 41 and the housing 1 by using the sealing block 2, which allows the coolant to flow more stably in the coolant flow channel 33 of the liquid cooling plate 3, reducing the risk of coolant leakage. This ensures that the liquid cooling system can remove heat more effectively, improves cooling efficiency, and helps related equipment (such as battery components) to operate in a more stable temperature environment, thereby improving cooling efficiency and extending the service life of the equipment.

[0057] Preferably, such as Figure 3 and Figure 7 As shown, a second rib 221 is provided on the wall of each third through hole 22, and a second groove 43 adapted to the corresponding second rib 221 is provided on the surface of the water inlet connector 41 and the water outlet connector 42.

[0058] When the inlet connector 41 and the outlet connector 42 pass through the third through hole 22 of the sealing block 2, the second rib 221 will be embedded in the second groove 43, forming a tight fit. This fit makes the connection between the inlet / outlet connector 4 and the sealing block 2 more stable and reduces the possibility of relative movement. This helps to prevent coolant from leaking in the gap between the inlet / outlet connector 4 and the sealing block 2, further improving the sealing performance of the liquid cooling system.

[0059] Furthermore, the design of the second rib 221 and the second groove 43 provides clear positioning and guidance for the installation of the inlet / outlet connector 4. During installation, the operator can more easily and accurately insert the inlet / outlet connector 4 into the third through hole 22 of the sealing block 2, improving installation efficiency and accuracy.

[0060] Preferably, the first rib 21 is interference-fitted with the first groove 123, and the second rib 221 is interference-fitted with the second groove 43.

[0061] An interference fit is a fit that has an interference (including a minimum interference of zero). In this type of fit, the tolerance zone of the hole is below the tolerance zone of the shaft, meaning the actual size of the hole is smaller than the actual size of the shaft. When the shaft is installed into the hole, a certain pressure is generated, causing the two to fit tightly together.

[0062] In the liquid cooling system of this invention, the first rib 21 on the surface of the sealing block 2 is press-fitted with the first groove 123 inside the first through hole 121 and the second through hole 122 of the housing 1. This means that the size of the first rib 21 is slightly larger than the size of the first groove 123. When the sealing block 2 is installed in the first groove 123, the first rib 21 will be squeezed and deformed, thus fitting tightly with the first groove 123. Similarly, the second rib 221 on the wall of the third through hole 22 of the sealing block 2 is also press-fitted with the second groove 43 on the surface of the water inlet connector 41 and the water outlet connector 42. That is, the size of the second rib 221 is slightly larger than the size of the second groove 43. When the water inlet and outlet connectors 4 pass through the third through hole 22, the second rib 221 will be tightly embedded in the second groove 43.

[0063] The interference fit ensures a tight fit between the first rib 21 and the first groove 123, and between the second rib 221 and the second groove 43, reducing the gap between the mating surfaces. This tight fit effectively prevents coolant leakage, greatly improves the sealing performance of the liquid cooling system, and ensures stable coolant circulation within the system.

[0064] Preferably, multiple first ribs 21 and multiple first grooves 123 are provided at intervals, and the multiple first ribs 21 correspond one-to-one with the multiple first grooves 123.

[0065] When the sealing block 2 is installed into the first groove 123, each first rib 21 will accurately embed into the corresponding first groove 123, forming a multi-point mating structure, thereby increasing the contact points and sealing area between the sealing block 2 and the housing 1. This multi-point sealing method can effectively block the leakage path of coolant and greatly improve the sealing performance of the liquid cooling system. Even if a small gap occurs in a certain local position, the ribs and grooves in other positions can still play a sealing role, thus ensuring the overall sealing effect.

[0066] Furthermore, the multi-point mating structure makes the sealing block 2 more securely fixed to the housing 1. During the operation of the liquid cooling system, the sealing block 2 needs to withstand various forces from the inlet / outlet water connectors 4, coolant pressure, and external vibrations. The mating of multiple first ribs 21 with the first grooves 123 can disperse these forces, reduce the possibility of displacement or loosening of the sealing block 2, and improve the stability of the entire liquid cooling system structure.

[0067] Preferably, multiple second ribs 221 and multiple second grooves 43 are provided at intervals, and the multiple second ribs 221 correspond one-to-one with the multiple second grooves 43.

[0068] When the inlet connector 41 and outlet connector 42 pass through the third through hole 22 of the sealing block 2, each second rib 221 is precisely embedded in the corresponding second groove 43, forming a multi-point tight fit structure. This greatly increases the contact points and sealing area between the inlet / outlet connectors 41 and the sealing block 2. The multi-point sealing structure effectively prevents coolant leakage between the connectors and the sealing block 2, further improving the sealing performance of the liquid cooling system. Even if a small gap appears in a certain local location, the ribs and grooves in other locations can still provide a sealing effect, ensuring that the coolant does not leak.

[0069] Preferably, the sealing block 2 is made of rubber.

[0070] Rubber has excellent elasticity and flexibility. When the sealing block 2 is installed in the first groove 123 of the housing 1 and mates with the inlet and outlet water connectors 4, the rubber can fit tightly against the contact surface, filling tiny gaps and uneven areas, thereby effectively preventing coolant leakage and ensuring that the liquid cooling system has good sealing performance.

[0071] Preferably, such as Figure 5 As shown, at the end of each third through hole 22, the surface of the sealing block 2 protrudes outward to form a third rib 23, the third rib 23 surrounds the third through hole 22, and the surfaces of the water inlet connector 41 and the water outlet connector 42 are respectively provided with a fourth rib 44 corresponding to the third rib 23, the third rib 23 can abut against the fourth rib 44.

[0072] The third rib 23 at one end of the third through hole 22 tightly abuts against the fourth rib 44 on the surfaces of the inlet connector 41 and the outlet connector 42. This abutment forms a structure similar to a "buckle" or "sealing engagement," creating a tight connection between the inlet connector 41, the outlet connector 42, and the sealing block 2. This tight fit forms multiple lines of sealing, effectively preventing coolant leakage from the connection between the inlet connector 41, the outlet connector 42, and the sealing block 2. This further improves the overall sealing performance of the liquid cooling system.

[0073] In addition, this utility model also provides a battery pack (not shown in the figure), which includes a battery module and a liquid cooling system of any of the above, wherein the battery module is installed in the housing 1 of the liquid cooling system.

[0074] The liquid cooling system is directly integrated into the battery pack, and the battery modules are installed in the housing 1 of the liquid cooling system, allowing the coolant to come into close contact with the battery modules. This compact layout can more effectively dissipate the heat generated by the battery modules during charging and discharging, reducing battery temperature and improving battery efficiency and lifespan.

[0075] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A liquid cooling system, characterized in that, include: The box body (1) has a first through hole (121) and a second through hole (122) spaced apart from each other, and a first groove (123) is provided in both the first through hole (121) and the second through hole (122); A sealing block (2) is installed in each corresponding first groove (123). The surface of each sealing block (2) is provided with a first rib (21) that is adapted to the corresponding first groove (123). The sealing block (2) is provided with a third through hole (22). A liquid cooling plate (3) is installed in the housing (1). The liquid cooling plate (3) includes an inlet (31), an outlet (32), and cold liquid flow channels (33) connected to the inlet (31) and the outlet (32) respectively. The inlet and outlet connectors (4) include an inlet connector (41) and an outlet connector (42) spaced apart from each other. The inlet connector (41) passes through the third through hole (22) of the sealing block (2) located in the first through hole (121) and communicates with the inlet (31). The outlet connector (42) passes through the third through hole (22) of the sealing block (2) located in the second through hole (122) and communicates with the outlet (32).

2. The liquid cooling system according to claim 1, characterized in that, A second rib (221) is provided on the wall of each of the third through holes (22), and a second groove (43) adapted to the corresponding second rib (221) is provided on the surface of the water inlet connector (41) and the water outlet connector (42).

3. The liquid cooling system according to claim 1, characterized in that, At the end of each of the third through holes (22), the surface of the sealing block (2) is raised outward to form a third rib (23), the third rib (23) surrounds the third through hole (22), and the surfaces of the water inlet connector (41) and the water outlet connector (42) are respectively provided with a fourth rib (44) corresponding to the third rib (23), the third rib (23) can abut against the fourth rib (44).

4. The liquid cooling system according to claim 1, characterized in that, The first groove (123) is trapezoidal in shape, and the cross-sectional area of ​​the opening of the first groove (123) is larger than the cross-sectional area of ​​the bottom of the first groove (123).

5. The liquid cooling system according to claim 1, characterized in that, The first rib (21) and the first groove (123) are each provided with a plurality of first ribs (21) and a plurality of first grooves (123) respectively.

6. The liquid cooling system according to claim 2, characterized in that, The second rib (221) and the second groove (43) are each provided in multiples at intervals, and the multiple second ribs (221) correspond one-to-one with the multiple second grooves (43).

7. The liquid cooling system according to claim 1, characterized in that, The first protruding rib (21) is interference-fitted with the first groove (123).

8. The liquid cooling system according to claim 2, characterized in that, The second rib (221) is interference-fitted with the second groove (43).

9. The liquid cooling system according to any one of claims 1 to 8, characterized in that, The housing (1) includes an upper cover (11), a lower housing (12), and a sealing gasket (13). The upper cover (11) covers the lower housing (12), and the sealing gasket (13) is disposed between the upper cover (11) and the lower housing (12). The first through hole (121) and the second through hole (122) are opened on the lower housing (12).

10. A battery pack, characterized in that, The system includes a battery module and a liquid cooling system according to any one of claims 1 to 9, wherein the battery module is installed in the housing (1) of the liquid cooling system.

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