Liquid-cooled plate, battery module, and battery pack

Abstract

Provided in the present application are a liquid-cooled plate, a battery module, and a battery pack. At least one notch is disposed on a side of a first liquid-cooled plate body facing a second liquid-cooled plate body. The second liquid-cooled plate body comprises a main body portion and at least one protruding portion. Each protruding portion protrudes from the main body portion, and each protruding portion is mounted in a notch, so that the first liquid-cooled plate body is mounted on the second liquid-cooled plate body. Thus, the positioning of the first liquid-cooled plate body and the second liquid-cooled plate body can be achieved, and the mounting of the first liquid-cooled plate body and the second liquid-cooled plate body can be efficiently completed.

Description

Liquid cooling plate, battery module and battery pack

[0001] This application claims priority to Chinese Patent Application No. 202421469987.7, filed with the Chinese Patent Office on June 25, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, specifically to a liquid cooling plate, a battery module, and a battery pack. Background Technology

[0003] In related technologies, battery liquid cooling plates can provide more efficient heat dissipation performance. Through the circulating cooling system of the liquid cooling plate, the surface temperature of the battery can be uniformly controlled, avoiding local overheating or overcooling, and improving the stability and safety of the battery. Invention Overview

[0004] As the number of battery cells increases, the number of liquid cooling plates also increases accordingly. The assembly process between multiple liquid cooling plates is complex and the installation efficiency is low.

[0005] This application provides a liquid cooling plate, which includes a liquid cooling base plate, and the liquid cooling base plate includes a first liquid cooling plate body and a second liquid cooling plate body arranged adjacent to each other along a first direction.

[0006] The first liquid-cooled plate has at least one groove on the side facing the second liquid-cooled plate.

[0007] The second liquid cooling plate includes a main body and at least one protrusion, each protrusion being provided on the side of the main body facing the first liquid cooling plate;

[0008] The protrusion is installed in the groove so that the first liquid cooling plate is installed on the second liquid cooling plate.

[0009] This application also provides a battery module. The battery module includes a cell module and a liquid cooling plate, wherein the cell module is mounted on the liquid cooling plate.

[0010] This application also provides a battery pack, which includes a battery module, a housing, and fasteners, wherein the fastener liquid cooling plate and the housing are fastened together. Beneficial effects

[0011] The liquid cooling plate provided in this application has at least one groove on the side of the first liquid cooling plate facing the second liquid cooling plate. The second liquid cooling plate includes a main body and at least one protrusion, each protruding from the side of the main body facing the first liquid cooling plate. The protrusion is installed within the groove, allowing the first liquid cooling plate to be mounted on the second liquid cooling plate. Because the protrusion corresponds to the groove, compared to the traditional side-bonding assembly method in chassis splicing structures, the first and second liquid cooling plates can be quickly positioned. The cooperation between the protrusion and the groove enables the splicing of the first and second liquid cooling plates, avoiding misalignment and uneven installation, efficiently completing the installation of the first and second liquid cooling plates, and solving the problem of low installation efficiency for liquid cooling plates.

[0012] The battery module provided in this application uses the aforementioned liquid cooling plate to improve the installation efficiency of the battery module.

[0013] The battery pack provided in this application is equipped with the aforementioned battery module to improve the production and processing efficiency of the battery pack. Attached Figure Description

[0014] Figure 1 is an exploded view of the liquid cooling plate provided in an embodiment of this application;

[0015] Figure 2 is a top view of the liquid-cooled base plate provided in an embodiment of this application;

[0016] Figure 3 is a top view of the first liquid-cooled plate provided in an embodiment of this application;

[0017] Figure 4 is an exploded view of the liquid cooling plate provided in an embodiment of this application.

[0018] Figure 5 is an exploded view of the battery module provided in an embodiment of this application;

[0019] Figure 6 is a top view of the battery module provided in an embodiment of this application;

[0020] Figure 7 is a structural diagram of the battery module provided in an embodiment of this application.

[0021] Figure label:

[0022] 100. Liquid cooling plate; 1001. First fixing hole;

[0023] 10. Liquid-cooled base plate; 101. Groove; 1002. Groove wall; 1003. Groove opening; 1011. Groove bottom wall; 1012. Groove side wall; 102. Main body; 103. Protrusion; 1031. Connecting wall; 1032. Guide wall;

[0024] 11. First liquid-cooled plate; 111. First main body; 112. First protrusion; 1120. First protruding edge; 1121. First connecting wall; 1122. First guide wall; 113. First groove; 1130. First groove wall; 1131. First groove bottom wall; 1132. First groove side wall; 1133. First groove opening; 12. Second liquid-cooled plate; 121. Second main body; 122. Second protrusion; 1220. Second protruding edge; 1221. Second connecting wall; 1222. Second guide wall; 123. Second groove; 1230. Second groove wall; 1231. Second groove bottom wall; 1232. Second groove side wall; 1233. Second groove opening;

[0025] 20. Liquid-cooled side panel; 21. Third liquid-cooled plate; 22. Fourth liquid-cooled plate;

[0026] 200. Battery module; 201. Cell module; 202. First thermally conductive adhesive layer; 203. Second thermally conductive adhesive layer; 204. First limiting adhesive strip; 205. Second limiting adhesive strip; 206. Buffer frame. Embodiments of the present invention

[0027] Please refer to Figures 1-3. Figure 1 is an exploded view of the liquid cooling plate provided in an embodiment of this application. Figure 2 is a top view of the liquid cooling base plate provided in an embodiment of this application. Figure 3 is a top view of the first liquid cooling plate body provided in an embodiment of this application. This application provides a liquid cooling plate 100. The first liquid cooling plate body 11 has at least one groove 101 on the side facing the second liquid cooling plate body 12. The second liquid cooling plate body 12 includes a main body and at least one protrusion 103. Each protrusion 103 protrudes from the side of the main body 102 facing the first liquid cooling plate body 11. The protrusion 103 is installed in the groove 101 so that the first liquid cooling plate body 11 is installed on the second liquid cooling plate body 12.

[0028] Specifically, the liquid cooling plate 100 includes a liquid cooling base plate 10, which includes a first liquid cooling plate body 11 and a second liquid cooling plate body 12 arranged adjacent to each other along a first direction. The first liquid cooling plate body 11 includes a first main body portion 111 and a first protrusion portion 112. The first main body portion 111 includes a first side facing the second liquid cooling plate body 12, and the first protrusion portion 112 is connected to the first side. Two adjacent first protrusion portions 112 form a first groove 113.

[0029] The second liquid cooling plate 12 includes a second main body 121 and a second protrusion 122. The second main body 121 includes a second side facing the first side. The second protrusion 122 is connected to the second side. Two adjacent second protrusions 122 form a second groove 123.

[0030] The first protrusion 112 is installed in the second groove 123, and the second protrusion 122 is installed in the first groove 113, so that the first liquid cooling plate 11 is installed in the second liquid cooling plate 12.

[0031] It is understood that the first protrusion 112 is installed in the second groove 123, and the second protrusion 122 is installed in the first groove 113, so as to achieve rapid positioning of the first liquid cooling plate 11 and the second liquid cooling plate 12, avoiding misalignment or uneven installation, and efficiently completing the installation of the first liquid cooling plate 11 and the second liquid cooling plate 12, thereby improving the overall assembly speed of the liquid cooling plate 100. In addition, the present application has a simple structure and is easy to process, which can further reduce the cost of mold opening and manufacturing.

[0032] In some embodiments, the liquid-cooled base plate 10 includes a plurality of first liquid-cooled plates 11 and a plurality of second liquid-cooled plates 12 arranged sequentially along a first direction. The first main body 111 includes two first sides, and a first protrusion 112 is connected to the two first sides respectively. Each first side is disposed toward a second liquid-cooled plate 12. For example, a second liquid-cooled plate 12 is disposed on the left side of the first liquid-cooled plate 11 and a second liquid-cooled plate 12 is disposed on the right side of the first liquid-cooled plate 11. The first protrusion 112 on the left side is installed in the second groove 123 of the second liquid-cooled plate 12 on the left side, and the first protrusion 112 on the right side is installed in the second groove 123 of the second liquid-cooled plate 12 on the right side. The plurality of first liquid-cooled plates 11 and second liquid-cooled plates 12 form a liquid-cooled surface. This application does not limit the number of first liquid-cooled plates 11 and second liquid-cooled plates 12. The number of first liquid-cooled plates 11 and second liquid-cooled plates 12 can be increased as needed to widen the overall length of the liquid-cooled plate 100.

[0033] In some embodiments, the first liquid cooling plate 11 includes a groove wall 1002 forming a groove 101, and the protrusion 103 includes a protruding edge facing the groove wall 1002. When the protrusion 103 is installed in the groove 101, the protruding edge is attached to the groove wall 1002.

[0034] Specifically, the first liquid cooling plate 11 includes a first groove wall 1130 forming a first groove 113, and the second protrusion 122 includes a second protruding edge 1220 facing the first groove wall 1130. When the second protrusion 122 is installed in the first groove 113, the second protruding edge 1220 is attached to the first groove wall 1130.

[0035] The second liquid cooling plate 12 includes a second groove wall 1230 forming a second groove 123, and a first protrusion 112 includes a first protruding edge 1120 facing the second groove wall 1230. When the first protrusion 112 is installed in the second groove 123, the first protruding edge 1120 is attached to the second groove wall 1230.

[0036] It is understandable that since the protrusions and grooves may fall off during installation, bonding can improve the stability of the structure. Compared with straight sides, the combination of grooves and protrusions increases the contact area between multiple liquid cooling plates 100, which can increase the bonding area of ​​the liquid cooling plates 100 during bonding, thereby improving the bonding strength.

[0037] Please refer to Figure 4, which is an exploded view 2 of the liquid cooling plate provided in the embodiment of this application. The first liquid cooling plate body 11 includes a bottom wall 1011 forming a groove 101 and two side walls 1012. The two ends of the bottom wall 1011 are respectively connected to a side wall 1012. The two side walls 1012 are spaced apart from the bottom wall 1011 and form groove openings 1003. The protrusion 103 includes a connecting wall 1031 facing the bottom wall 1011. The width of the connecting wall 1031 is greater than the width of the groove opening 1003.

[0038] Specifically, in some embodiments, the first liquid cooling plate 11 includes a first groove bottom wall 1131 forming a first groove 113 and two first groove side walls 1132, and the second protrusion 122 includes a second connecting wall 1221 facing the first groove bottom wall 1131. The two first groove side walls 1132 are spaced apart at one end away from the first groove bottom wall 1131 to form a first groove opening 1133. The width of the second connecting wall 1221 is greater than the width of the first groove opening 1133.

[0039] The second liquid cooling plate 12 includes a second groove bottom wall 1231 forming a second groove 123 and two second groove side walls 1232. The first protrusion 112 includes a first connecting wall 1121 facing the second groove bottom wall 1231. The two second groove side walls 1232 are spaced apart at one end away from the second groove bottom wall 1231 to form a second groove opening 1233. The width of the first connecting wall 1121 is greater than the width of the second groove opening 1233.

[0040] Specifically, when the second protrusion 122 is engaged in the first groove 113, the second connecting wall 1221 is tightly attached to the bottom wall 1131 of the first groove. Since the width of the second connecting wall 1221 is greater than the width of the first groove opening 1133, and due to the limitation of the size of the first groove opening 1133, the second protrusion 122 will not slide out of the first groove opening 1133 along the first direction, i.e., the laying direction of the liquid-cooled base plate 10, thus improving the stability of the installation. Similarly, when the first protrusion 112 is engaged in the second groove 123, the first connecting wall 1121 is tightly attached to the bottom wall 1231 of the second groove. Since the width of the first connecting wall 1121 is greater than the width of the second groove opening 1233, the first protrusion 112 will not slide out of the second groove opening 1233 along the first direction.

[0041] Understandably, when the width of the first connecting wall 1121 is greater than the width of the second groove 1233, since the protrusion will not easily slide out of the corresponding groove, the first liquid cooling plate 11 and the second liquid cooling plate 12 can be connected by adhesive or not.

[0042] In some embodiments, the protrusion 103 further includes two guide walls 1032, with each end of the connecting wall 1031 connected to a guide wall 1032, and the guide wall 1032 is inclined in a direction away from the main body 102 and away from the other guide wall 1032.

[0043] In some embodiments, the first protrusion 112 includes two first guide walls 1122, which are respectively connected to the two ends of the first connecting wall 1121. The first guide walls 1122 are inclined in a direction away from the first main body 111 and away from the other first guide wall 1122. The first protrusion 112 is formed into a trapezoidal structure. When the first protrusion 112 is inserted into the second groove 123, the trapezoidal structure that is narrow at the front and wide at the back can prevent the first protrusion 112 from falling off.

[0044] In some embodiments, the second protrusion 122 includes two second guide walls 1222, which are respectively connected to the two ends of the second connecting wall 1221. The second guide walls 1222 are inclined from the direction away from the second main body 121 and away from the other second guide wall 1222. The second protrusion 122 has a trapezoidal structure. Similarly, when the second protrusion 122 is inserted into the first groove 113, the trapezoidal structure that is narrow at the front and wide at the back can prevent the second protrusion 122 from falling off.

[0045] It should be noted that in the first liquid cooling plate 11, since a first groove 113 is formed between the two first protrusions 112, when the second protrusion 122 is installed in the first groove 113, the second guide wall 1222 is tightly attached to the side wall 1132 of the first groove. It can be considered that the second guide wall 1222 is tightly attached to the first guide walls 1122 on both sides of the second guide wall 1222. Similarly, in the second liquid cooling plate 12, since a second groove 123 is formed between the two second protrusions 122, when the first protrusion 112 is installed in the second groove 123, the first guide wall 1122 is tightly attached to the side wall 1232 of the second groove. It can be considered that the first guide wall 1122 is tightly attached to the second guide walls 1222 on both sides of the first guide wall 1122.

[0046] In some embodiments, the first liquid cooling plate 11 is provided with a plurality of grooves 101, which are arranged along the length direction of the first liquid cooling plate 11. The second liquid cooling plate 12 is provided with a plurality of protrusions 103, which are arranged along the length direction of the second liquid cooling plate 12.

[0047] Understandably, the battery cell module 201 is arranged along the length direction of multiple first liquid cooling plates 11 and second liquid cooling plates 12, multiple grooves are arranged along the length direction of the first liquid cooling plates 11, and protrusions are arranged along the length direction of the second liquid cooling plates 12, which allows for quick installation of the longer sides and increases assembly efficiency.

[0048] In some embodiments, the liquid cooling plate 100 further includes a liquid cooling side plate 20, which includes a third liquid cooling plate body 21 and a fourth liquid cooling plate body 22 disposed adjacent to each other. The third liquid cooling plate body 21 is connected to the first liquid cooling plate body 11 along a second direction, and the fourth liquid cooling plate body 22 is connected to the second liquid cooling plate body 12 along a second direction. The second direction is perpendicular to the liquid cooling base plate 10. The provision of the third liquid cooling plate body 21 and the fourth liquid cooling plate body 22 can increase the side liquid cooling effect on the basis of bottom liquid cooling.

[0049] In some embodiments, the liquid cooling plate 100 further includes a fifth liquid cooling plate body, which is disposed on the side of the second liquid cooling plate body 12 away from the first liquid cooling plate body 11.

[0050] In some examples, the second liquid cooling plate 12 has a groove 101 on the side facing the fifth liquid cooling plate, and the fifth liquid cooling plate has a protrusion 103 on the side facing the second liquid cooling plate 12. The protrusion 103 is installed in the groove 101 so that the second liquid cooling plate 12 is installed on the fifth liquid cooling plate.

[0051] In some examples, the second liquid cooling plate 12 has a protrusion 103 on the side facing the fifth liquid cooling plate, and the fifth liquid cooling plate has a groove 101 on the side facing the second liquid cooling plate 12. The protrusion 103 is installed in the groove 101 so that the second liquid cooling plate 12 is installed on the fifth liquid cooling plate.

[0052] It is understandable that when both the first liquid cooling plate 11 and the fifth liquid cooling plate face the second liquid cooling plate 12 with a groove 101, the fifth liquid cooling plate can be another first liquid cooling plate 11 that is adjacent to the second liquid cooling plate 12.

[0053] In some embodiments, the liquid-cooled base plate 10 includes a plurality of first liquid-cooled plates 11 and second liquid-cooled plates 12 connected sequentially along a first direction. When the sum of the first liquid-cooled plates 11 and the second liquid-cooled plates 12 is an even number, the first liquid-cooled plate 11 is at the beginning and the second liquid-cooled plate 12 is at the end. A third liquid-cooled plate 21 is vertically connected to the first liquid-cooled plate 11 at the beginning and is connected to the side of the first liquid-cooled plate 11 away from the second liquid-cooled plate 12. A fourth liquid-cooled plate 22 is vertically connected to the second liquid-cooled plate 12 at the end and is connected to the side of the second liquid-cooled plate 12 away from the first liquid-cooled plate 11. A plurality of first liquid-cooled plates 11 or second liquid-cooled plates 12 are provided between the first and last liquid-cooled plates 100. The third liquid-cooled plate 21 is vertically connected to the middle of each first liquid-cooled plate 11 between the first and last two liquid-cooled plates. The fourth liquid-cooled plate 22 is vertically connected to the middle of each second liquid-cooled plate 12 between the first and last two liquid-cooled plates.

[0054] In some embodiments, the liquid-cooled base plate 10 includes a plurality of first liquid-cooled plates 11 and second liquid-cooled plates 12 connected sequentially along a first direction. When the sum of the first liquid-cooled plates 11 and the second liquid-cooled plates 12 is odd, the first end and the last end are both first liquid-cooled plates 11. A third liquid-cooled plate 21 is vertically connected to the first liquid-cooled plates 11 at the first end and the last end, and is connected to the side of each first liquid-cooled plate 11 away from the second liquid-cooled plate 12. A plurality of first liquid-cooled plates 11 or second liquid-cooled plates 12 are provided between the liquid-cooled plates 100 at the first end and the last end. The third liquid-cooled plate 21 is vertically connected to the middle of each first liquid-cooled plate 11 between the first and last two liquid-cooled plates. A fourth liquid-cooled plate 22 is vertically connected to the middle of each second liquid-cooled plate 12 between the first and last two liquid-cooled plates.

[0055] In some embodiments, the third liquid cooling plate 21 and the first liquid cooling plate 11 are integrally formed, and the fourth liquid cooling plate 22 and the second liquid cooling plate 12 are integrally formed. It is understood that the integrally formed structure can improve processing efficiency and increase the stability of the structure.

[0056] Please refer to Figures 5-7. Figure 5 is an exploded view of the battery module provided in the embodiment of this application, Figure 6 is a top view of the battery module provided in the embodiment of this application, and Figure 7 is a structural diagram of the battery module provided in the embodiment of this application.

[0057] This application also provides a battery module 200, which includes a cell module 201 and a liquid cooling plate 100, wherein the cell module 201 is mounted on the liquid cooling plate 100.

[0058] Specifically, the battery cell module 201 includes multiple battery cell arrays, each battery cell array including multiple battery cell units connected in series. A buffer frame 206 is provided between two adjacent battery cell units to prevent the battery cell units from impacting each other. An interval is formed between the adjacent third liquid cooling plate 21 and fourth liquid cooling plate 22, and one battery cell array is placed in each interval. That is, the side of the battery cell array with a larger area faces the third liquid cooling plate 21 or the fourth liquid cooling plate 22. It can be understood that as the length of the liquid cooling base plate 10 extends, the number of third liquid cooling plates 21 and fourth liquid cooling plates 22 can be increased, and more battery cell arrays can be placed at the same time.

[0059] In some embodiments, the battery module 200 includes a first thermally conductive adhesive layer 202 and a second thermally conductive adhesive layer 203. The first thermally conductive adhesive layer 202 is bonded between the cell module 201 and the liquid cooling base plate 10 of the liquid cooling plate 100, that is, the first thermally conductive adhesive layer 202 is bonded between the cell module 201 and the first liquid cooling plate body 11, and the first thermally conductive adhesive layer 202 is bonded between the cell module 201 and the second liquid cooling plate body 12.

[0060] The second thermally conductive adhesive layer 203 is bonded between the cell module 201 and the liquid-cooled side plate 20 of the liquid-cooled plate 100, that is, the second thermally conductive adhesive layer 203 is bonded between the cell module 201 and the third liquid-cooled plate 21, and the second thermally conductive adhesive layer 203 is bonded between the cell module 201 and the fourth liquid-cooled plate 22.

[0061] Understandably, the battery module 200 generates heat during operation, and ineffective heat dissipation could affect battery performance and lifespan. The thermally conductive adhesive layer fills the internal space of the battery, conducting the heat generated by the battery to the external environment, thereby reducing the battery temperature and improving its efficiency and safety.

[0062] In some embodiments, the battery module 200 includes a plurality of first limiting adhesive strips 204 and a plurality of second limiting adhesive strips 205. The first limiting adhesive strips 204 are spaced apart along a first direction between the cell module 201 and the liquid cooling base plate 10 of the liquid cooling plate 100, and a first thermally conductive adhesive layer 202 is disposed between two adjacent first limiting adhesive strips 204. That is, the first limiting adhesive strips 204 are bonded between the cell module 201 and the first liquid cooling plate body 11, and the first limiting adhesive strips 204 are bonded between the cell module 201 and the second liquid cooling plate body 12.

[0063] The second limiting adhesive strip 205 is bonded at intervals along the second direction between the cell module 201 and the liquid cooling side plate 20 of the liquid cooling plate 100. The second thermally conductive adhesive layer 203 is disposed between two adjacent second limiting adhesive strips 205, that is, the second limiting adhesive strip 205 is bonded between the cell module 201 and the third liquid cooling plate 21, and the second limiting adhesive strip 205 is bonded between the cell module 201 and the fourth liquid cooling plate 22.

[0064] Specifically, multiple first limiting adhesive strips 204 are arranged in parallel and spaced apart, and a first thermally conductive adhesive layer 202 is applied between two adjacent first limiting adhesive strips 204. Multiple second limiting adhesive strips 205 are arranged in parallel and spaced apart, and a second thermally conductive adhesive layer 203 is applied between two adjacent second limiting adhesive strips 205. This application does not limit the number of first limiting adhesive strips 204 and second limiting adhesive strips 205; they can be 2, 3, 4, etc. The thickness of the limiting adhesive strips can be set based on the preset coating thickness of the thermally conductive adhesive layer. After the limiting adhesive strips are applied, they can bond to the battery cell module 201 together with the thermally conductive adhesive layer. At the same time, the space between adjacent limiting adhesive strips can also define the coating range of the thermally conductive adhesive layer. By setting the limiting adhesive strips, a uniform distribution of the thermally conductive adhesive layer is achieved when pressing, so that the battery cell module 201 can be pressed to a fixed distance when pressed with the liquid cooling plate 100, avoiding an uneven contact between the liquid cooling plate 100 and the battery cell module 201.

[0065] In some embodiments, after the thermally conductive adhesive layer and the limiting adhesive strip are applied, the third liquid cooling plate 21 and the fourth liquid cooling plate 22 are placed on both sides of a row of battery cells. Then, the battery cell module 201 and the liquid cooling plate 100 are pressed together using an extrusion tool, so that each row of battery cells is fixed between the third liquid cooling plate 21 and the fourth liquid cooling plate 22. Then, a busbar is welded to the top of the battery cell module 201, and multiple battery cells are further connected through the busbar. Finally, the module is transported to a heating and settling station for heating, so that the thermally conductive adhesive layer is completely solidified, so that the battery module 200 reaches the predetermined connection strength.

[0066] This application also provides a battery pack (not shown in the figure), which includes a liquid cooling plate 100 and a housing. The liquid cooling plate 100 has first fixing holes 1001 on both sides, which are evenly spaced between the first liquid cooling plate body 11 and the second liquid cooling plate body 12. The housing has second fixing holes. The battery module 200 also includes several fasteners disposed within the first and second fixing holes to securely connect the liquid cooling plate 100 and the housing. The fasteners can be screws, nuts, bolts, etc. Because the third liquid cooling plate body 21 and the fourth liquid cooling plate body 22 restrict the movement of the liquid cooling base plate 10 in the extending direction, and the fixing holes restrict the movement of the liquid cooling plate 100 from both sides of the liquid cooling base plate 10, the position of the cell module 201 within the battery pack is relatively fixed.

Claims

1. A liquid-cooled plate (100), wherein, The liquid cooling plate (100) includes a liquid cooling base plate (10), and the liquid cooling base plate (10) includes a first liquid cooling plate body (11) and a second liquid cooling plate body (12) arranged adjacent to each other along a first direction; The first liquid cooling plate (11) has at least one groove (101) on the side facing the second liquid cooling plate (12); The second liquid cooling plate (12) includes a main body (102) and at least one protrusion (103), each of the protrusions (103) protruding from the main body (102) on the side facing the first liquid cooling plate (100); The protrusion (103) is installed in the groove (101) so that the first liquid cooling plate (100) is installed on the second liquid cooling plate (12).

2. The liquid-cooled plate (100) according to claim 1, wherein, The first liquid cooling plate (12) includes a groove wall (1002) forming the groove (101), and the protrusion (103) includes a protruding edge (1120) facing the groove wall (1002). When the protrusion (103) is installed in the groove (101), the protruding edge is attached to the groove wall (1002).

3. The liquid cooling plate (100) according to claim 1, wherein, The first liquid cooling plate (11) includes a bottom wall (1011) forming the groove (101) and two side walls (1012). The bottom wall (1011) is connected to one side wall (1012) at each end. The two side walls (1012) are spaced apart from the bottom wall (1011) to form a groove (1003). The protrusion (103) includes a connecting wall (1031) facing the bottom wall (1011) of the groove, the width of which is greater than the width of the groove (1003).

4. The liquid cooling plate (100) according to claim 3, wherein the protrusion (103) further includes two guide walls (1032), and the two ends of the connecting wall (1031) are respectively connected to one of the guide walls (1032), and the guide walls (1032) are inclined in a direction away from the main body (102) and away from the other guide wall (1032).

5. The liquid-cooled plate (100) according to any one of claims 1-4, wherein, The first liquid cooling plate (11) is provided with a plurality of grooves (101), and the plurality of grooves (101) are arranged along the length direction of the first liquid cooling plate (11); The second liquid cooling plate (12) is provided with a plurality of protrusions (103), and the plurality of protrusions (103) are arranged along the length direction of the second liquid cooling plate (12).

6. The liquid cooling plate (100) according to any one of claims 1-4, wherein the liquid cooling plate (100) further comprises a liquid cooling side plate (20), the liquid cooling side plate (20) comprising a third liquid cooling plate body (21) and a fourth liquid cooling plate body (22) disposed adjacent to each other, the third liquid cooling plate body (21) being connected to the first liquid cooling plate body (11) along a second direction, and the fourth liquid cooling plate body (22) being connected to the second liquid cooling plate body (12) along a second direction, the second direction being perpendicular to the first direction.

7. A liquid-cooled plate (100) as described in claim 6, wherein, The third liquid cooling plate (100) and the first liquid cooling plate (11) are integrally formed, and the fourth liquid cooling plate (22) and the second liquid cooling plate (12) are integrally formed.

8. A liquid-cooled plate (100) as described in any one of claims 1-4, wherein, The liquid cooling plate (100) further includes a fifth liquid cooling plate body, which is disposed on the side of the second liquid cooling plate body (12) away from the first liquid cooling plate body (11); The second liquid cooling plate (12) has the groove (101) on the side facing the fifth liquid cooling plate, and the fifth liquid cooling plate has the protrusion (103) on the side facing the second liquid cooling plate (12). The protrusion (103) is installed in the groove (101) so that the second liquid cooling plate (12) is installed on the fifth liquid cooling plate; or The second liquid cooling plate (12) has a protrusion (103) on the side facing the fifth liquid cooling plate, and the fifth liquid cooling plate has a groove (101) on the side facing the second liquid cooling plate (12). The protrusion (103) is installed in the groove (101) so that the second liquid cooling plate (12) is installed on the fifth liquid cooling plate.

9. A battery module (200), the battery module (200) comprising: Battery cell module (201); A liquid cooling plate (100) as described in any one of claims 1-8, wherein the battery cell module (201) is mounted on the liquid cooling plate (100).

10. The battery module (200) according to claim 9, wherein the battery module (200) comprises: The first thermally conductive adhesive layer (202) is bonded between the battery cell module (201) and the liquid cooling base plate (10) of the liquid cooling plate (100); The second thermally conductive adhesive layer (203) is bonded between the battery cell module (201) and the liquid-cooled side plate (20) of the liquid-cooled plate (100).

11. The battery module (200) according to claim 9, wherein, The battery module (200) includes: Multiple first limiting adhesive strips (204) are bonded at intervals along a first direction between the battery cell module (201) and the liquid cooling base plate (10) of the liquid cooling plate (100), and the first thermally conductive adhesive layer (202) is disposed between two adjacent first limiting adhesive strips (204); Multiple second limiting adhesive strips (205) are bonded at intervals along the second direction between the battery cell module (201) and the liquid cooling side plate (20) of the liquid cooling plate (100), and the second thermally conductive adhesive layer (203) is disposed between two adjacent second limiting adhesive strips (205).

12. A battery pack, wherein, The battery pack includes: The battery module (200) as described in any one of claims 9-11, wherein the liquid cooling plate (100) is provided with a first fixing hole (1001); The outer casing is provided with a second fixing hole; Fasteners are provided in the first fixing hole (1001) and the second fixing hole to securely connect the liquid cooling plate (100) and the outer shell.

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