Liquid cooling plate, battery module and battery pack

Abstract

The utility model provides a liquid cooling plate, a battery module and a battery pack. At least one groove is formed in the side, facing the second liquid cooling plate body, of the first liquid cooling plate body, the second liquid cooling plate body comprises a main body part and at least one protruding part, and each protruding part is arranged on the side, facing the first liquid cooling plate body, of the main body part in a protruding mode. Wherein the protruding part is installed in the groove, so that the first liquid cooling plate body is installed on the second liquid cooling plate body. According to the liquid cooling plate, the first liquid cooling plate body and the second liquid cooling plate body can be quickly positioned due to the convex part grooves, the conditions of mounting dislocation, mounting irregularity and the like can be avoided, the mounting of the first liquid cooling plate body and the second liquid cooling plate body is efficiently completed, and the problem that the mounting efficiency of the liquid cooling plate is relatively low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a liquid cooling plate, a battery module and a battery pack. Background Art

[0002] In the related art, the battery liquid cooling plate can provide more efficient heat dissipation performance. Through the circulating cooling system of the liquid cooling plate, the uniform control of the battery surface temperature can be realized, avoiding local overheating or overcooling, and improving the stability and safety of the battery. However, when the number of battery cells increases, the number of liquid cooling plates correspondingly increases, and the assembly process between multiple liquid cooling plates is complex, and the installation efficiency is low. Summary of the Utility Model

[0003] The embodiments of the utility model provide a liquid cooling plate, a battery module and a battery pack, which can improve the technical problem of low assembly efficiency of the liquid cooling plate.

[0004] In a first aspect, the embodiments of the utility model provide a liquid cooling plate, which includes a liquid cooling bottom plate, and the liquid cooling bottom plate includes a first liquid cooling plate body and a second liquid cooling plate body arranged adjacent to each other along a first direction;

[0005] At least one groove is arranged on one side of the first liquid cooling plate body facing the second liquid cooling plate body;

[0006] The second liquid cooling plate body includes a main body part and at least one protruding part, and each protruding part protrudes from one side of the main body part facing the first liquid cooling plate body;

[0007] Wherein, the protruding part is installed in the groove so that the first liquid cooling plate body is installed on the second liquid cooling plate body.

[0008] In an embodiment, the first liquid cooling plate includes a groove wall forming the groove, and the protruding part includes a protruding edge facing the groove wall. When the protruding part is installed in the groove, the protruding edge is adhered to the groove wall.

[0009] In an embodiment, the first liquid cooling plate includes a groove bottom wall and two groove side walls forming the groove. The two ends of the groove bottom wall are respectively connected to one groove side wall, and the two groove side walls are spaced apart from each other at the ends away from the groove bottom wall to form a groove opening;

[0010] The protruding part includes a connecting wall facing the groove bottom wall, and the width of the connecting wall is greater than the width of the groove opening.

[0011] In an embodiment, the protruding part further includes two guiding walls. The two ends of the connecting wall are respectively connected to one guiding wall, and the guiding wall is inclined in a direction away from the main body part and away from the other guiding wall.

[0012] In one embodiment, the first liquid cooling plate body is provided with a plurality of the grooves, and the plurality of the grooves are arranged along the length direction of the first liquid cooling plate body;

[0013] The second liquid cooling plate body is provided with a plurality of the protrusions, and the plurality of the protrusions are arranged along the length direction of the second liquid cooling plate body.

[0014] In one embodiment, the liquid-cooled plate also includes a liquid-cooled side plate, and the liquid-cooled side plate includes a third liquid-cooled plate body and a fourth liquid-cooled plate body arranged adjacent to each other, the third liquid-cooled plate body is connected to the first liquid-cooled plate body along a second direction, and the fourth liquid-cooled plate body is connected to the second liquid-cooled plate body along a second direction, and the second direction is perpendicular to the first direction.

[0015] In one embodiment, the third liquid-cooling plate body and the first liquid-cooling plate body are integrally formed, and the fourth liquid-cooling plate body and the second liquid-cooling plate body are integrally formed.

[0016] In one embodiment, the liquid cooling plate further includes a fifth liquid cooling plate, and the fifth liquid cooling plate is disposed on a side of the second liquid cooling plate body away from the first liquid cooling plate body;

[0017] The second liquid-cooling plate body is provided with the groove on the side facing the fifth liquid-cooling plate body, and the fifth liquid-cooling plate body is provided with the protrusion on the side facing the second liquid-cooling plate body, and the protrusion is installed in the groove so that the second liquid-cooling plate body is installed on the fifth liquid-cooling plate body; or

[0018] The second liquid cooling plate is provided with the protrusion on the side facing the fifth liquid cooling plate, and the fifth liquid cooling plate is provided with a groove on the side facing the second liquid cooling plate. The protrusion is installed in the groove so that the second liquid cooling plate is installed on the fifth liquid cooling plate.

[0019] In a second aspect, the present application provides a battery module, comprising:

[0020] Battery cell module;

[0021] A liquid cooling plate, the battery cell module is installed on the liquid cooling plate.

[0022] In one embodiment, the battery module comprises:

[0023] A first thermally conductive adhesive layer is bonded between the battery core module and the liquid cooling bottom plate of the liquid cooling plate;

[0024] The second thermally conductive adhesive layer is bonded between the battery core module and the liquid cooling side plate of the liquid cooling plate.

[0025] In one embodiment, the battery module comprises:

[0026] A plurality of first limiting rubber strips are adhesively disposed at intervals in the first direction between the battery cell module and the liquid cooling bottom plate of the liquid cooling plate, and the first heat-conducting adhesive layer is disposed between two adjacent first limiting rubber strips;

[0027] A plurality of second limiting rubber strips are adhesively disposed at intervals in the second direction between the battery cell module and the liquid cooling side plate of the liquid cooling plate, and the second heat-conducting adhesive layer is disposed between two adjacent second limiting rubber strips.

[0028] Thirdly, the present application further provides a battery pack, including:

[0029] A battery module, the liquid cooling plate is provided with a first fixing hole;

[0030] A housing, the housing is provided with a second fixing hole;

[0031] A fastener, the fastener is disposed in the first fixing hole and the second fixing hole to fasten and connect the liquid cooling plate and the housing.

[0032] Advantages of the embodiments of the present utility model:

[0033] In the embodiment of the present utility model, at least one groove is provided on a side of the first liquid cooling plate body facing the second liquid cooling plate body, and the second liquid cooling plate body includes a main body portion and at least one protruding portion, and each of the protruding portions protrudes from a side of the main body portion facing the first liquid cooling plate body. Among them, the protruding portion is installed in the groove so that the first liquid cooling plate body is installed on the second liquid cooling plate body. Since the protruding portion corresponds to the groove, compared with the assembly method of directly bonding the sides in the traditional chassis splicing structure, the first liquid cooling plate body and the second liquid cooling plate body can be quickly positioned. Through the cooperation of the protruding portion and the groove, the splicing of the first liquid cooling plate body and the second liquid cooling plate body can be realized, and situations such as installation misalignment and uneven installation can be avoided, and the installation of the first liquid cooling plate body and the second liquid cooling plate body can be efficiently completed, solving the problem of low installation efficiency of the liquid cooling plate. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 is an explosion of the liquid cooling plate provided by the embodiment of the present utility model Figure 1 ;

[0036] Figure 2 is a top view of the liquid cooling bottom plate provided by the embodiment of the present utility model;

[0037] Figure 3 It is a top view of the first liquid cooling plate body provided by an embodiment of the present utility model;

[0038] Figure 4 It is an exploded view of the liquid cooling plate provided by an embodiment of the present utility model; Figure 2 ;

[0039] Figure 5 It is an exploded view of the battery module provided by an embodiment of the present utility model;

[0040] Figure 6 It is a top view of the battery module provided by an embodiment of the present utility model;

[0041] Figure 7 It is a structural diagram of the battery module provided by an embodiment of the present utility model.

[0042] Reference numerals:

[0043] 100, liquid cooling plate; 1001, first fixing hole;

[0044] 10, liquid cooling bottom plate; 101, groove; 1011, bottom wall of the groove; 1012, side wall of the groove; 102, main body part; 103, protruding part; 1031, connecting wall; 1032, guiding wall;

[0045] 11, first liquid cooling plate body; 111, first main body part; 112, first protruding part; 1120, first protruding edge; 1121, first connecting wall; 1122, first guiding wall; 113, first groove; 1130, first groove wall; 1131, first bottom wall of the groove; 1132, first side wall of the groove; 1133, first groove opening; 12, second liquid cooling plate body; 121, second main body part; 122, second protruding part; 1220, second protruding edge; 1221, second connecting wall; 1222, second guiding wall; 123, second groove; 1230, second groove wall; 1231, second bottom wall of the groove; 1232, second side wall of the groove; 1233, second groove opening;

[0046] 20, liquid cooling side plate; 21, third liquid cooling plate body; 22, fourth liquid cooling plate body;

[0047] 200, battery module; 201, battery cell module; 202, first thermal conductive adhesive layer; 203, second thermal conductive adhesive layer; 204, first limiting rubber strip; 205, second limiting rubber strip; 206, buffer frame. Detailed implementation manners

[0048] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0049] Please refer to Figures 1-3 , Figure 1 The explosion of the liquid cooling plate provided by the embodiment of the utility model Figure 1 , Figure 2 is a top view of a liquid cooling base plate provided in an embodiment of the utility model, Figure 3 It is a top view of the first liquid-cooled plate body provided by an embodiment of the utility model. The present application provides a liquid-cooled plate 100, wherein at least one groove 101 is provided on the side of the first liquid-cooled plate body 11 facing the second liquid-cooled plate body 12. The second liquid-cooled plate body 12 includes a main body and at least one protrusion 103, each of the protrusions 103 is protruded on the side of the main body 102 facing the first liquid-cooled plate body 11, wherein the protrusion 103 is installed in the groove 101, so that the first liquid-cooled plate body 11 is installed on the second liquid-cooled plate body 12.

[0050] Specifically, the liquid cooling plate 100 includes a liquid cooling bottom plate 10, and the liquid cooling bottom 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 body 11 includes a first main body 111 and a first protruding portion 112, the first main body 111 includes a first side facing the second liquid cooling plate body 12, the first protruding portion 112 is connected to the first side, and two adjacent first protruding portions 112 form a first groove 113.

[0051] The second liquid cooling plate body 12 includes a second main body 121 and a second protruding portion 122 . The second main body 121 includes a second side facing the first side. The second protruding portion 122 is connected to the second side. Two adjacent second protruding portions 122 form a second groove 123 .

[0052] 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 body 11 is installed in the second liquid cooling plate body 12 .

[0053] It can be understood that the first protruding portion 112 is correspondingly installed in the second groove 123, and the second protruding portion 122 is correspondingly installed in the first groove 113 to achieve rapid positioning of the first liquid cooling plate body 11 and the second liquid cooling plate body 12, which can avoid situations such as installation misalignment and uneven installation. At the same time, the installation of the first liquid cooling plate body 11 and the second liquid cooling plate body 12 can be efficiently completed, improving the overall assembly speed of the liquid cooling plate 100. In addition, the structure of the present application is simple and convenient to process, which can further reduce the costs of mold opening and manufacturing.

[0054] In some embodiments, the liquid cooling bottom plate 10 includes a plurality of first liquid cooling plate bodies 11 and a plurality of second liquid cooling plate bodies 12 arranged in sequence along the first direction. The first main body portion 111 includes two first side edges, and the first protruding portions 112 are respectively connected to the two first side edges. Each first side edge faces a second liquid cooling plate body 12. For example, a second liquid cooling plate body 12 is provided on the left side of the first liquid cooling plate body 11, and a second liquid cooling plate body 12 is provided on the right side of the first liquid cooling plate body 11. The first protruding portion 112 on the left is installed in the second groove 123 of the second liquid cooling plate body 12 on the left, and the first protruding portion 112 on the right is installed in the second groove 123 of the second liquid cooling plate body 12 on the right. The plurality of first liquid cooling plate bodies 11 and second liquid cooling plate bodies 12 form a liquid cooling surface. The present application does not limit the number of the first liquid cooling plate bodies 11 and the second liquid cooling plate bodies 12, and the number of the first liquid cooling plate bodies 11 and the second liquid cooling plate bodies 12 can be increased according to the situation to broaden the overall length of the liquid cooling plate 100.

[0055] In some embodiments, the first liquid cooling plate body 11 includes a groove wall forming the groove 101, and the protruding portion 103 includes a protruding edge facing the groove wall. When the protruding portion 103 is installed in the groove 101, the protruding edge is adhered to the groove wall.

[0056] Specifically, the first liquid cooling plate body 11 includes a first groove wall 1130 forming the first groove 113, and the second protruding portion 122 includes a second protruding edge 1220 facing the first groove wall 1130. When the second protruding portion 122 is installed in the first groove 113, the second protruding edge 1220 is adhered to the first groove wall 1130;

[0057] The second liquid cooling plate body 12 includes a second groove wall 1230 forming the second groove 123, and the first protruding portion 112 includes a first protruding edge 1120 facing the second groove wall 1230. When the first protruding portion 112 is installed in the second groove 123, the first protruding edge 1120 is adhered to the second groove wall 1230.

[0058] It can be understood that since the protrusions and grooves may fall off during the installation process, bonding can be used to improve the structural stability. Moreover, compared with the flat side edges, the cooperation between the grooves and the protrusions increases the contact area between multiple liquid cooling plates 100. When bonding, the bonding area of the liquid cooling plates 100 can be increased to improve the bonding strength.

[0059] Please refer to Figure 4 , Figure 4 which is an exploded view of the liquid cooling plate provided by the embodiment of the present utility model. Figure 2 The first liquid cooling plate body 11 includes a bottom wall 1011 of the groove 101 and two side walls 1012 of the groove. Both ends of the bottom wall 1011 are respectively connected to one of the side walls 1012. The ends of the two side walls 1012 away from the bottom wall 1011 are spaced apart and form a notch of the groove. The protrusion 103 includes a connecting wall 1031 facing the bottom wall 1011, and the width of the connecting wall 1031 is greater than the width of the notch of the groove.

[0060] Specifically, in some embodiments, the first liquid cooling plate body 11 includes a first bottom wall 1131 forming the first groove 113 and two first side walls 1132 of the groove. The second protrusion 122 includes a second connecting wall 1221 facing the first bottom wall 1131. The ends of the two first side walls 1132 away from the first bottom wall 1131 are spaced apart to form a first notch 1133 of the groove, and the width of the second connecting wall 1221 is greater than the width of the first notch 1133.

[0061] The second liquid cooling plate body 12 includes a second bottom wall 1231 forming the second groove 123 and two second side walls 1232 of the groove. The first protrusion 112 includes a first connecting wall 1121 facing the second bottom wall 1231. The ends of the two second side walls 1232 away from the second bottom wall 1231 are spaced apart to form a second notch 1233 of the groove, and the width of the first connecting wall 1121 is greater than the width of the second notch 1233.

[0062] Specifically, after the second protrusion 122 is inserted into the first groove 113, the second connecting wall 1221 is closely attached to the first bottom wall 1131. Since the width of the second connecting wall 1221 is greater than the width of the first notch 1133, due to the limitation of the size of the first notch 1133, the second protrusion 122 will not slide out of the first notch 1133 along the first direction, i.e., the laying direction of the liquid cooling bottom plate 10, which can improve the installation stability. Similarly, after the first protrusion 112 is inserted into the second groove 123, the first connecting wall 1121 is closely attached to the second bottom wall 1231. Since the width of the first connecting wall 1121 is greater than the width of the second notch 1233, the first protrusion 112 will not slide out of the second notch 1233 along the first direction.

[0063] It can be understood that when the width of the first connecting wall 1121 is greater than the width of the second notch 1233, in this case, since the protruding portion will not easily slide out of the corresponding groove, the first liquid cooling plate body 11 and the second liquid cooling plate body 12 can be connected by bonding or without bonding.

[0064] In some embodiments, the protruding portion 103 further includes two guiding walls 1032. The two ends of the connecting wall 1032 are respectively connected to one of the guiding walls 1032. The guiding walls 1032 are inclined in a direction away from the main body portion 102 and away from the other guiding wall 1032.

[0065] In some embodiments, the first protruding portion 112 includes two first guiding walls 1122. The two first guiding walls 1122 are respectively connected to the two ends of the first connecting wall 1121. The first guiding walls 1122 are inclined in a direction away from the first main body portion 111 and away from the other first guiding wall 1122. The first protruding portion 112 as a whole forms a trapezoidal structure. When the first protruding portion 112 is inserted into the second groove 123, the trapezoidal structure with a narrow front and a wide rear can prevent the first protruding portion 112 from falling off.

[0066] In some embodiments, the second protruding portion 122 includes two second guiding walls 1222. The two second guiding walls 1222 are respectively connected to the two ends of the second connecting wall 1221. The second guiding walls 1222 are inclined in a direction away from the second main body portion 121 and away from the other second guiding wall 1222. The second protruding portion 122 is in a trapezoidal structure. Similarly, when the second protruding portion 122 is inserted into the first groove 113, the trapezoidal structure with a narrow front and a wide rear can prevent the second protruding portion 122 from falling off.

[0067] It should be noted that in the first liquid cooling plate body 11, since the first groove 113 is formed between the two first protruding portions 112, when the second protruding portion 122 is installed in the first groove 113, the second guiding wall 1222 is in close contact with the first groove side wall 1132, and it can be considered that the second guiding wall 1222 is in close contact with the first guiding walls 1122 on both sides of the second guiding wall 1222. Similarly, in the second liquid cooling plate body 12, since the second groove 123 is formed between the two second protruding portions 122, when the first protruding portion 112 is installed in the second groove 123, the first guiding wall 1122 is in close contact with the second groove side wall 1232, and it can be considered that the first guiding wall 1122 is in close contact with the second guiding walls 1222 on both sides of the first guiding wall 1122.

[0068] In some embodiments, 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.

[0069] It can be understood that the battery cell module 201 is arranged along the length direction of the multiple first liquid-cooled plates 11 and the second liquid-cooled plates 12, the multiple grooves are arranged along the length direction of the first liquid-cooled plates 11, and the protrusions are arranged along the length direction of the second liquid-cooled plates 12, which can enable the longer side edges to be quickly installed and increase assembly efficiency.

[0070] In some embodiments, the liquid cooling plate 100 also includes a liquid cooling side plate 20, and the liquid cooling side plate 20 includes a third liquid cooling plate body 21 and a fourth liquid cooling plate body 22 arranged adjacent to each other, and 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, and the second direction is perpendicular to the liquid cooling bottom plate 10. 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.

[0071] In some embodiments, the liquid cooling plate 100 further includes a fifth liquid cooling plate body, and the fifth liquid cooling plate body is disposed on a side of the second liquid cooling plate body 12 away from the first liquid cooling plate body 11 .

[0072] In some examples, a groove 101 is provided on the side of the second liquid cooling plate 12 facing the fifth liquid cooling plate, and a protrusion 103 is provided on the side of the fifth liquid cooling plate 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.

[0073] In some examples, a protrusion 103 is provided on the side of the second liquid cooling plate body 12 facing the fifth liquid cooling plate body, and a groove 101 is provided on the side of the fifth liquid cooling plate body facing the second liquid cooling plate body 12, and the protrusion 103 is installed in the groove 101, so that the second liquid cooling plate body 12 is installed on the fifth liquid cooling plate body.

[0074] It is understandable that when the first liquid cooling plate 11 and the fifth liquid cooling plate both have the groove 101 on one side facing the second liquid cooling plate 12 , the fifth liquid cooling plate may be another first liquid cooling plate 11 adjacent to the second liquid cooling plate 12 .

[0075] In some embodiments, the liquid-cooled bottom plate 10 includes a plurality of first liquid-cooled plate bodies 11 and second liquid-cooled plate bodies 12 connected in sequence along a first direction. When the sum of the first liquid-cooled plate bodies 11 and the second liquid-cooled plate bodies 12 is an even number, the first liquid-cooled plate body 11 is at the head end and the second liquid-cooled plate body 12 is at the tail end. The third liquid-cooled plate body 21 is vertically connected to the first liquid-cooled plate body 11 at the head end and is connected to the side of the first liquid-cooled plate body 11 away from the second liquid-cooled plate body 12. The fourth liquid-cooled plate body 22 is vertically connected to the second liquid-cooled plate body 12 at the tail end and is connected to the side of the second liquid-cooled plate body 12 away from the first liquid-cooled plate body 11. A plurality of first liquid-cooled plate bodies 11 or second liquid-cooled plate bodies 12 are provided between the head and tail liquid-cooled plates 100. The third liquid-cooled plate body 21 is vertically connected to the middle of each first liquid-cooled plate body 11 between the head and tail two liquid-cooled plate bodies, and the fourth liquid-cooled plate body 22 is vertically connected to the middle of each second liquid-cooled plate body 12 between the head and tail two liquid-cooled plate bodies.

[0076] In some embodiments, the liquid-cooled bottom plate 10 includes a plurality of first liquid-cooled plate bodies 11 and second liquid-cooled plate bodies 12 connected in sequence along a first direction. When the sum of the first liquid-cooled plate bodies 11 and the second liquid-cooled plate bodies 12 is an odd number, both the head end and the tail end are the first liquid-cooled plate bodies 11. The third liquid-cooled plate body 21 is vertically connected to the first liquid-cooled plate bodies 11 at the head end and the tail end and is connected to the side of each first liquid-cooled plate body 11 away from the second liquid-cooled plate body 12. A plurality of first liquid-cooled plate bodies 11 or second liquid-cooled plate bodies 12 are provided between the liquid-cooled plates 100 at the head end and the tail end. The third liquid-cooled plate body 21 is vertically connected to the middle of each first liquid-cooled plate body 11 between the head and tail two liquid-cooled plate bodies, and the fourth liquid-cooled plate body 22 is vertically connected to the middle of each second liquid-cooled plate body 12 between the head and tail two liquid-cooled plate bodies.

[0077] In some embodiments, the third liquid-cooled plate body 21 and the first liquid-cooled plate body 11 are integrally formed, and the fourth liquid-cooled plate body 22 and the second liquid-cooled plate body 12 are integrally formed. It can be understood that the integrally formed structure can improve the processing efficiency and at the same time increase the structural stability.

[0078] Please refer to Figures 5-7 , Figure 5 which is an exploded view of the battery module provided by the embodiment of the present utility model, Figure 6 which is a top view of the battery module provided by the embodiment of the present utility model, Figure 7 which is a structural diagram of the battery module provided by the embodiment of the present utility model.

[0079] This application also provides a battery module 200. The battery module 200 includes a battery cell module 201 and the liquid-cooled plate 100, and the battery cell module 201 is installed on the liquid-cooled plate 100.

[0080] Specifically, the battery cell module 201 includes a plurality of battery cell arrays. Each battery cell array includes a plurality of serially connected battery cells. A buffer frame 206 is provided between two adjacent battery cells to prevent the battery cells from hitting each other. An interval is formed between the adjacent third liquid cooling plate body 21 and the fourth liquid cooling plate body 22. One battery cell array is placed in each interval, that is, the side with a larger area of the battery cell array faces the third liquid cooling plate body 21 or the fourth liquid cooling plate body 22. It can be understood that as the length of the liquid cooling bottom plate 10 extends, the number of the third liquid cooling plate body 21 and the fourth liquid cooling plate body 22 can be increased, and more battery cell arrays can be placed at the same time.

[0081] In some embodiments, the battery module 200 includes a first thermal conductive adhesive layer 202 and a second thermal conductive adhesive layer 203. The first thermal conductive adhesive layer 202 is adhered between the battery cell module 201 and the liquid cooling bottom plate 10 of the liquid cooling plate 100, that is, the first thermal conductive adhesive layer 202 is adhered between the battery cell module 201 and the first liquid cooling plate body 11, and the first thermal conductive adhesive layer 202 is adhered between the battery cell module 201 and the second liquid cooling plate body 12.

[0082] The second thermal conductive adhesive layer 203 is adhered between the battery cell module 201 and the liquid cooling side plate 20 of the liquid cooling plate 100, that is, the second thermal conductive adhesive layer 203 is adhered between the battery cell module 201 and the third liquid cooling plate body 21, and the second thermal conductive adhesive layer 203 is adhered between the battery cell module 201 and the fourth liquid cooling plate body 22.

[0083] It can be understood that since the battery module 200 will generate a certain amount of heat during operation, if the heat cannot be effectively dissipated, it may affect the performance and life of the battery. The thermal conductive adhesive layer can fill the internal space of the battery, conduct the heat generated by the battery to the external environment, thereby reducing the temperature of the battery and improving its working efficiency and safety.

[0084] In some embodiments, the battery module 200 includes a plurality of first limiting rubber strips 204 and a plurality of second limiting rubber strips 205. The first limiting rubber strips 204 are adhered at intervals in the first direction between the battery cell module 201 and the liquid cooling bottom plate 10 of the liquid cooling plate 100, and the first thermal conductive adhesive layer 202 is disposed between two adjacent first limiting rubber strips 204. That is, the first limiting rubber strip 204 is adhered between the battery cell module 201 and the first liquid cooling plate body 11, and the first limiting rubber strip 204 is adhered between the battery cell module 201 and the second liquid cooling plate body 12.

[0085] The second limiting rubber strip 205 is adhesively fixed 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. The second heat-conducting adhesive layer 203 is arranged between two adjacent second limiting rubber strips 205. That is, the second limiting rubber strip 205 is adhesively fixed between the battery cell module 201 and the third liquid cooling plate body 21, and the second limiting rubber strip 205 is adhesively fixed between the battery cell module 201 and the fourth liquid cooling plate body 22.

[0086] Specifically, a plurality of first limiting rubber strips 204 are arranged in parallel at intervals, and the first heat-conducting adhesive layer 202 is coated between two adjacent first limiting rubber strips 204. A plurality of second limiting rubber strips 205 are arranged in parallel at intervals, and the second heat-conducting adhesive layer 203 is coated between two adjacent second limiting rubber strips 205. The number of the first limiting rubber strips 204 and the second limiting rubber strips 205 in this application is not limited, and can be 2, 3, 4, etc. The thickness of the limiting rubber strip can be set based on the preset coating thickness of the heat-conducting adhesive layer. After the limiting rubber strip is mounted, the limiting rubber strip can be bonded to the battery cell module 201 together with the heat-conducting adhesive layer. At the same time, the space between adjacent limiting rubber strips can also define the coating range of the heat-conducting adhesive layer. By setting the limiting rubber strip, the uniform distribution of the heat-conducting adhesive layer during pressing is realized, so that the battery cell module 201 can be pressed to a fixed distance when pressed against the liquid cooling plate 100, avoiding the uneven contact between the liquid cooling plate 100 and the battery cell module 201.

[0087] In some embodiments, after the heat-conducting adhesive layer and the limiting rubber strip are adhesively fixed, the third liquid cooling plate body 21 and the fourth liquid cooling plate body 22 are arranged on both sides of a row of battery cells. Then, an extrusion tooling is used to perform pressure holding on the battery cell module 201 and the liquid cooling plate 100 together, so that each row of battery cell arrays is fixed between the third liquid cooling plate body 21 and the fourth liquid cooling plate body 22. Then, a bus bar is welded on the top of the battery cell module 201, and a plurality of battery cells are further connected through the bus bar. Finally, it is conveyed to a heating and standing station for heating to completely solidify the heat-conducting adhesive layer, so that the battery module 200 reaches a predetermined connection strength.

[0088] The present application further provides a battery pack (not shown in the figure), the battery pack includes the liquid cooling plate 100 and a housing. Wherein, first fixing holes 1001 are provided on both sides of the liquid cooling plate 100, and the first fixing holes 1001 can be evenly spaced on the first liquid cooling plate body 11 and the second liquid cooling plate body 12. The housing is provided with second fixing holes. The battery module 200 further includes a plurality of fasteners, and the fasteners are arranged in the first fixing holes and the second fixing holes to tightly connect the liquid cooling plate 100 and the housing. The fasteners can be screws, nuts, bolts, etc. Since the third liquid cooling plate body 21 and the fourth liquid cooling plate body 22 limit the movement of the liquid cooling bottom plate 10 in the extending direction of the liquid cooling bottom plate, and the fixing holes limit the movement of the liquid cooling plate 100 from both sides of the liquid cooling bottom plate 10, so that the position of the battery cell module 201 in the battery pack is relatively fixed.

[0089] The embodiments of the present invention have been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A liquid cooling plate, characterized in that: The liquid cooling plate comprises a liquid cooling bottom plate, and the liquid cooling bottom plate comprises a first liquid cooling plate body and a second liquid cooling plate body adjacently arranged along a first direction; At least one groove is provided on a side of the first liquid-cooling plate body facing the second liquid-cooling plate body; The second liquid-cooling plate body comprises a main body and at least one protruding portion, each of the protruding portions being protrudingly disposed on a side of the main body facing the first liquid-cooling plate body; Wherein, the protrusion is installed in the groove so that the first liquid cooling plate body is installed on the second liquid cooling plate body.

2. The liquid cooling plate according to claim 1, characterized in that: The first liquid cooling plate body includes a groove wall forming the groove, and the protruding portion includes a protruding edge facing the groove wall. When the protruding portion is installed in the groove, the protruding edge is adhered to the groove wall.

3. The liquid cooling plate according to claim 1, characterized in that: The first liquid cooling plate body comprises a groove bottom wall and two groove side walls forming the groove, the two ends of the groove bottom wall are respectively connected to one of the groove side walls, and the two groove side walls are spaced apart from one end of the groove bottom wall to form a groove; The protruding portion includes a connecting wall facing the groove bottom wall, and the width of the connecting wall is greater than the width of the notch.

4. The liquid cooling plate according to claim 3, characterized in that: The protruding portion further includes two guide walls. The two ends of the connecting wall are respectively connected to one of the guide walls. The guide walls are inclined in a direction away from the main body and away from the other guide wall.

5. The liquid cooling plate according to any one of claims 1 to 4, characterized in that: The first liquid cooling plate body is provided with a plurality of the grooves, and the plurality of the grooves are arranged along the length direction of the first liquid cooling plate body; The second liquid cooling plate body is provided with a plurality of the protrusions, and the plurality of the protrusions are arranged along the length direction of the second liquid cooling plate body.

6. The liquid cooling plate according to any one of claims 1 to 4, characterized in that: The liquid cooling plate also includes a liquid cooling side plate, which includes a third liquid cooling plate body and a fourth liquid cooling plate body arranged adjacent to each other, the third liquid cooling plate body is connected to the first liquid cooling plate body along a second direction, and the fourth liquid cooling plate body is connected to the second liquid cooling plate body along a second direction, and the second direction is perpendicular to the first direction.

7. A liquid cooling plate according to claim 6, characterized in that: The third liquid cooling plate body and the first liquid cooling plate body are integrally formed, and the fourth liquid cooling plate body and the second liquid cooling plate body are integrally formed.

8. A liquid cooling plate according to any one of claims 1 to 4, characterized in that: The liquid cooling plate further comprises a fifth liquid cooling plate body, and the fifth liquid cooling plate body is arranged on a side of the second liquid cooling plate body away from the first liquid cooling plate body; The second liquid-cooling plate body is provided with the groove on the side facing the fifth liquid-cooling plate body, and the fifth liquid-cooling plate body is provided with the protrusion on the side facing the second liquid-cooling plate body, and the protrusion is installed in the groove so that the second liquid-cooling plate body is installed on the fifth liquid-cooling plate body; or The second liquid cooling plate is provided with the protrusion on the side facing the fifth liquid cooling plate, and the fifth liquid cooling plate is provided with a groove on the side facing the second liquid cooling plate. The protrusion is installed in the groove so that the second liquid cooling plate is installed on the fifth liquid cooling plate.

9. A battery module, characterized in that: include: Battery cell module; A liquid cooling plate as described in any one of claims 1 to 8, wherein the battery cell module is installed on the liquid cooling plate.

10. The battery module according to claim 9, characterized in that: include: A first thermally conductive adhesive layer is bonded between the battery core module and the liquid cooling bottom plate of the liquid cooling plate; The second thermally conductive adhesive layer is bonded between the battery core module and the liquid cooling side plate of the liquid cooling plate.

11. The battery module according to claim 10, characterized in that: include: A plurality of first limiting rubber strips are glued between the battery core module and the liquid cooling bottom plate of the liquid cooling plate at intervals along a first direction, and the first thermal conductive adhesive layer is arranged between two adjacent first limiting rubber strips; A plurality of second limiting rubber strips are glued between the battery core module and the liquid cooling side plate of the liquid cooling plate at intervals along the second direction, and the second thermal conductive adhesive layer is arranged between two adjacent second limiting rubber strips.

12. A battery pack, characterized in that: include: The battery module according to any one of claims 9 to 11, wherein the liquid cooling plate is provided with a first fixing hole; A housing, wherein the housing is provided with a second fixing hole; A fastener is disposed in the first fixing hole and the second fixing hole to fasten the liquid cooling plate and the housing.

Images