Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment. The battery pack comprises a box body, a battery cell assembly and a first heat exchange component, the box body has an accommodating space; the battery cell assembly is at least partially arranged in the accommodating space; the first heat exchange part covers the battery cell assembly and is used for exchanging heat with the battery cell assembly; wherein the box body is provided with a first positioning structure, the first heat exchange component is provided with a second positioning structure, and the first positioning structure is matched with the second positioning structure so as to be used for positioning in the process that the first heat exchange component covers the battery cell assembly. The battery pack provided by the embodiment of the utility model has the advantage that the mounting position precision of the first heat exchange component is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery pack and electric equipment. BACKGROUND

[0002] The battery pack mainly includes a box body and a plurality of battery cells packaged in the box body.

[0003] In the related art, in order to improve the heat dissipation performance of the battery pack, the battery pack is also provided with a liquid cooling plate, and the liquid cooling plate cover is arranged on the plurality of battery cells to cool and dissipate heat for the plurality of battery cells. However, in the actual assembly process, the position accuracy of the liquid cooling plate installation is low, which leads to poor heat dissipation effect of the liquid cooling plate. SUMMARY

[0004] The embodiments of the utility model provide a battery pack and electric equipment, can improve the technical problem that the position accuracy of the first heat exchange component installation is low.

[0005] In the first aspect, the embodiments of the utility model provide a battery pack, comprising:

[0006] The box body has a containing space;

[0007] The battery cell assembly includes a plurality of battery cells, and the battery cell assembly is at least partially arranged in the containing space; and

[0008] The first heat exchange component is arranged on the battery cell assembly to exchange heat with the battery cell assembly;

[0009] The box body is provided with a first positioning structure, the first heat exchange component is provided with a second positioning structure, and the first positioning structure and the second positioning structure cooperate to position the first heat exchange component during the process of covering the first heat exchange component to the battery cell assembly.

[0010] In an embodiment, one of the first positioning structure and the second positioning structure includes a first positioning hole, the other of the first positioning structure and the second positioning structure includes a first positioning column, and the first positioning column is arranged in the first positioning hole.

[0011] In an embodiment, the first positioning structure further includes a positioning bracket, the positioning bracket is mounted on the box body, and the first positioning column is arranged on one side of the first positioning bracket facing the first heat exchange component.

[0012] In an embodiment, the first positioning column is provided with a first locking component, and the first heat exchange component is locked between the first locking component and the positioning bracket.

[0013] In an embodiment, the positioning bracket includes:

[0014] a bracket bottom plate connected and fixed with the box body;

[0015] a bracket side plate, one end of which is connected and fixed with the bracket bottom plate; and,

[0016] a bracket top plate connected to the side of the bracket side plate away from the bracket bottom plate, the bracket top plate being connected and fixed with the first positioning column.

[0017] In an embodiment, the bracket bottom plate is provided with a first mounting hole facing the first positioning column, the first mounting hole having a hole diameter greater than the maximum outer diameter of the first positioning column, so that the first positioning column can be mounted to the bracket top plate via the first mounting hole.

[0018] The first positioning column is riveted or welded to the bracket top plate.

[0019] In an embodiment, both ends of the bracket bottom plate in the length direction are provided with second mounting holes for mounting and fixing to the box body, and the bracket side plate is located at the middle part of the bracket bottom plate in the length direction.

[0020] In an embodiment, the number of the first positioning holes is at least two, and at least one of the first positioning holes is a waist-shaped hole; and / or,

[0021] The number of the first positioning holes is at least two, and each end of the first heat exchange component in the length direction is provided with the second positioning structure.

[0022] In an embodiment, the battery pack further comprises a second heat exchange component, which is arranged on the side of the battery cell assembly away from the first heat exchange component.

[0023] In an embodiment, the number of the box bodies is multiple, and the multiple box bodies are stacked along a first direction.

[0024] Each of the box bodies is provided with the battery cell assembly and the first heat exchange component, and the first heat exchange component is located on the side of the battery cell assembly along the first direction.

[0025] In an embodiment, the battery pack further comprises at least one connecting plate, and the outer walls of two adjacent box bodies are connected by the connecting plate; and / or

[0026] The outer wall of the box body is provided with a fixing lug, and the fixing lugs of two adjacent box bodies are connected and fixed.

[0027] In an embodiment, the outer wall of the box is connected with the connecting plate along at least one side in a second direction, and the outer wall of the box is provided with the fixing lug along at least one side in a third direction, the first direction, the second direction and the third direction being perpendicular to each other.

[0028] In an embodiment, the box is further provided with a mounting portion, the mounting portion being located in the accommodating space, and the first positioning structure is mounted on the mounting portion.

[0029] In a second aspect, the embodiments of the utility model provide a kind of electric equipment, including the battery pack of any above.

[0030] The beneficial effects of the embodiments of the utility model are as follows:

[0031] In the embodiments of the utility model, the positioning during the installation of the first heat exchange component can be realized by the cooperation of the first positioning structure and the second positioning structure, so as to improve the technical problem that the position precision of the first heat exchange component installation is low. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be simply introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of these drawings.

[0033] Figure 1 The partial parts explosion drawing of the battery pack provided in the embodiments of the utility model is shown.

[0034] Figure 2 The partial parts assembly drawing of the battery pack shown in the figure is shown. Figure 1

[0035] Figure 3 The sectional view of the battery pack shown in the figure along A-A direction is shown. Figure 2

[0036] The partial parts assembly drawing of the battery pack shown in the figure along A-A direction is shown. Figure 4 Figure 3 The first positioning structure explosion drawing in the figure is shown.

[0037] Figure 5 The first positioning structure explosion drawing in the figure is shown. Figure 4

[0038] The partial parts explosion drawing of the battery pack shown in the figure along A-A direction is shown. Figure 6 Figure 1 The partial parts assembly drawing of the battery pack shown in the figure along A-A direction is shown.

[0039] Figure 7 The explosion drawing of another battery pack provided in the embodiments of the utility model is shown.​​​

[0040] Figure 8 For Figure 7 Assembly view of the battery pack shown in FIG.

[0041] Figure 9 For Figure 8 Local enlarged view at Y in FIG.

[0042] The various reference numbers in the figures are as follows:

[0043] 100, box body;

[0044] 11, first positioning structure; 111, first positioning column; 112, positioning bracket; 1121, bracket bottom plate; 1122, bracket side plate; 1123, bracket top plate; 1124, first mounting hole; 1125, second mounting hole; 1126, third mounting hole; 113, first locking component; 12, fixing lug; 121, second positioning column; 122, second positioning hole; 13, mounting portion;

[0045] 200, cell assembly;

[0046] 21, cell; 22, integrated busbar;

[0047] 300, first heat exchange component;

[0048] 31, second positioning structure; 31a, first positioning hole;

[0049] 400, second heat exchange component;

[0050] 500, connecting plate;

[0051] 600, top cover;

[0052] 700, bottom cover.

[0053] H1, first direction; H2, second direction; H3, third direction. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower positions of the device in the actual use or working state, and specifically refer to the direction of the drawing in the drawings. The "inner" and "outer" refer to the outline of the device.

[0055] The battery pack can be applied to an electric device. The electric device can be, but is not limited to, a vehicle, a smart wearable device, a mobile terminal, a household appliance, and a medical instrument, and the embodiments of the present application do not limit the electric device. The vehicle includes, but is not limited to, a car, a bus, a train, a ship, a flying device, and the like. The smart wearable device includes, but is not limited to, a smart watch, a smart bracelet, a cervical vertebra massage instrument, and the like. The mobile terminal includes, but is not limited to, a smart phone, a notebook computer, a tablet computer, and a POS (point of sales terminal) machine. The household appliance includes, but is not limited to, a television, a washing machine, an air conditioner, an electric rice cooker, a smart sweeper, and a smart lamp. The medical instrument includes, but is not limited to, an infrared electronic thermometer, a pulse oximeter, and a human body composition analyzer.

[0056] Of course, the battery pack can also be applied to an energy storage device, and the embodiments of the present application do not limit the battery pack.

[0057] Please refer to Figure 1 The battery pack includes a box body 100, a cell assembly 200, and a first heat exchange component 300. The box body 100 has an accommodation space. The cell assembly 200 includes a plurality of cells 21, and the cell assembly 200 is at least partially arranged in the accommodation space. The first heat exchange component 300 is arranged on the cell assembly 200 to exchange heat with the cell assembly 200. The box body 100 is provided with a first positioning structure 11, and the first heat exchange component 300 is provided with a second positioning structure 31. The first positioning structure 11 and the second positioning structure 31 are matched to be positioned during the process of arranging the first heat exchange component 300 on the cell assembly 200.

[0058] It can be understood that in the prior art, the first heat exchange component 300 is installed by being manually covered on the battery cell assembly 200 by an operator, and there is no positioning structure between the first heat exchange component 300 and the battery cell assembly 200 to guide and position, so that the first heat exchange component 300 is easily deviated in position when being covered on the battery cell assembly 200. In contrast, in the embodiment of the utility model, the positioning of the first heat exchange component 300 during installation can be realized through the cooperation of the first positioning structure 11 and the second positioning structure 31, so as to improve the technical problem of low position accuracy of the first heat exchange component 300 during installation.

[0059] It can also be understood that by improving the position accuracy of the first heat exchange component 300 during installation, the first heat exchange component 300 can more accurately provide a better heat exchange effect for each position of the battery cell assembly 200, so that a large temperature difference between the battery cells 21 at different positions can be avoided, and the service life and reliability of the battery pack can be improved.

[0060] Please refer to Figure 2 、 Figure 3 and Figure 4 In some embodiments, one of the first positioning structure 11 and the second positioning structure 31 comprises a first positioning hole 31a, and the other of the first positioning structure 11 and the second positioning structure 31 comprises a first positioning column 111, and the first positioning column 111 is inserted into the first positioning hole 31a. Thus, during installation, the positioning of the first heat exchange component 300 can be conveniently and quickly realized by inserting the first positioning column 111 into the first positioning hole 31a, and the preliminary fixation of the first heat exchange component 300 can also be realized.

[0061] Of course, in some other embodiments, one of the first positioning structure 11 and the second positioning structure 31 comprises a first positioning groove, and the other of the first positioning structure 11 and the second positioning structure 31 comprises a first positioning rib, and the first positioning rib is engaged in the first positioning groove, which is not limited in the embodiments of the application.

[0062] Hereinafter, the technical solutions of the embodiments of the application will be exemplarily described mainly in combination with the structure of the first positioning column 111 and the first positioning hole 31a.

[0063] In some embodiments, the first positioning structure 11 further comprises a positioning bracket 112. The positioning bracket 112 is mounted to the box body 100, and the first positioning column 111 is protruded from a side of the positioning bracket 112 facing the first heat exchange component 300. Then, in the actual assembly process, the first positioning column 111 can be arranged on the positioning bracket 112, so that the first positioning column 111 is more stably and reliably mounted to the box body 100 through the positioning bracket 112; and compared with the first positioning column 111 being integrally formed on the box body 100, the separate forming manner can reduce the forming difficulty of the first positioning column 111.

[0064] In some embodiments, the first positioning column 111 is provided with a first locking component 113, and the first heat exchange component 300 is locked between the first locking component 113 and the positioning bracket 112. Thus, after the first heat exchange component 300 is installed in place, the first heat exchange component 300 can be locked by the first locking component 113 to avoid displacement and falling off of the first heat exchange component 300 in the subsequent use process.

[0065] In addition, it can also be understood that the first positioning column 111 is used for positioning and guiding in the installation process of the first heat exchange component 300, and locking and fixing after the first heat exchange component 300 is installed in place, so that the number of parts of the battery pack as a whole can be reduced, so that the inside of the battery pack is more compact, thereby improving the energy density of the battery pack and reducing the assembly difficulty of the battery pack.

[0066] For example, the first positioning column 111 can be provided with external threads, and the first locking component 113 can be a nut, so that the first locking component 113 can be threadedly screwed to the first positioning column 111.

[0067] Please continue to refer to Figure 5 In some embodiments, the positioning bracket 112 can comprise a bracket bottom plate 1121, a bracket side plate 1122 and a bracket top plate 1123. The bracket bottom plate 1121 is connected and fixed with the box body 100. One end of the bracket side plate 1122 is connected and fixed with the bracket bottom plate 1121. The bracket top plate 1123 is connected to a side of the bracket side plate 1122 away from the bracket bottom plate 1121, and the bracket top plate 1123 is connected and fixed with the first positioning column 111.

[0068] Further, on the one hand, the positioning bracket 112 can increase the contact area with the box body 100 through the bracket bottom plate 1121, so as to be stably mounted to the box body 100; on the other hand, the positioning bracket 112 can also more stably support the first heat exchange component 300 through the bracket top plate 1123. On this basis, compared with the positioning bracket 112 adopting a solid block structure, the hollow structure connecting the bracket bottom plate 1121 and the bracket top plate 1123 through the bracket side plate 1122 can make the positioning bracket 112 more lightweight, so as to reduce the overall weight of the battery pack.

[0069] In some embodiments, the first positioning column 111 is riveted or welded to the bracket top plate 1123 to improve the stability and reliability of the installation of the first positioning column 111, thereby ensuring the stability and reliability of the installation of the first heat exchange component 300.

[0070] In some embodiments, the bracket bottom plate 1121 is provided with a first mounting hole 1124 facing the first positioning column 111. The hole diameter of the first mounting hole 1124 is greater than the maximum outer diameter of the first positioning column 111, so that the first positioning column 111 can be installed to the bracket top plate 1123 through the first mounting hole 1124.

[0071] For example, the bracket top plate 1123 is provided with a third mounting hole 1126, which is correspondingly arranged with the first mounting hole 1124, and the first positioning column 111 is arranged in the first mounting hole 1124.

[0072] Then, taking the riveting fixation of the first positioning column 111 as an example, first, the riveting equipment can clamp the bracket bottom plate 1121 to fix the positioning bracket 112; then, the riveting head of the riveting equipment can carry the first positioning column 111 through the first mounting hole 1124, and then rivet the first positioning column 111 to the third mounting hole 1126. Correspondingly, the first positioning column 111 can be a rivet bolt, such as a M5 size rivet bolt.

[0073] Continuing to take the welding fixation of the first positioning column 111 as an example, first, the welding equipment can clamp the bracket bottom plate 1121 to fix the positioning bracket 112; then, the welding equipment can drive the first positioning column 111 to pass through the first mounting hole 1124 until the first positioning column 111 is arranged in the third mounting hole 1126; finally, the welding working head of the welding equipment welds the first positioning column 111 to the third mounting hole 1126. Correspondingly, the first positioning column 111 can be a projection welding bolt, such as a M5 size projection welding bolt.

[0074] Therefore, it can be seen that the bracket bottom plate 1121 of the embodiment of the present application makes the positioning bracket 112 have the advantage of easy clamping, so as to facilitate the clamping of the automatic equipment, and at the same time, through the third mounting hole 1126 on the bracket bottom plate 1121, the working head of the riveting equipment and the welding equipment and other automatic equipment can also have a good guiding and positioning effect, so that the working head of the automatic equipment accurately installs the first positioning column 111 to the positioning bracket 112, and finally improves the position accuracy of the positioning first heat exchange component 300.

[0075] In some embodiments, the two ends of the length direction of the bracket bottom plate 1121 are provided with the second mounting holes 1125 to be fixedly installed to the box body 100, and the bracket side plate 1122 is located at the middle part of the length direction of the bracket bottom plate 1121. Thus, the bracket side plate 1122 and / or the bracket top wall connected to the bracket side plate 1122 can be avoided from interfering with the installation at the second mounting hole 1125. Moreover, since the two ends of the length direction of the bracket bottom plate 1121 are fixedly connected to the box body 100, the stress of the bracket base can be more uniform and reasonable.

[0076] In some embodiments, the bracket bottom plate 1121 can be riveted or screwed to the box body 100 through the second mounting hole 1125, for example, the bracket bottom plate 1121 can be riveted to the second mounting hole 1125 through a M5 size blind rivet, and the present application does not limit this.

[0077] In some embodiments, the positioning bracket 112 can be an aluminum profile. For example, the positioning bracket 112 can be an aluminum extrusion formed by an extrusion process, and then processed by punching, punching and blanking, CNC (Computer numerical control machine tools, numerical control machine tools) processing and the like. Of course, the positioning bracket 112 can also be a steel material or any other material, and the present application does not limit this.

[0078] In some embodiments, the box body 100 is further provided with a mounting portion 13, the mounting portion 13 is located in the accommodation space, and the first positioning structure 11 is installed on the mounting portion 13. Thus, the connection between the first positioning structure 11 and the box body 100 can be avoided from being exposed, so that the stability and reliability of the first positioning structure 11 can be improved.

[0079] For example, the mounting portion 13 can be protruded from the inner wall of the accommodation space, and the positioning bracket 112 of the first positioning structure 11 (such as the bracket bottom plate 1121 of the positioning bracket 112) is installed on the mounting portion 13.

[0080] The above is some example description of the connection mode of the first positioning column 111 and the box body 100 in the present application, and the following will continue to illustrate the present application by combining the first positioning hole 31a.

[0081] In some embodiments, the number of first positioning holes 31a is at least two. It can be understood that if there is only one first positioning hole 31a, the first heat exchange component 300 still has the freedom of rotation around the axis of the first positioning column 111 after the first positioning column 111 is inserted into the first positioning hole 31a. Therefore, by providing at least two first positioning holes 31a in the present application, the rotational freedom of the first heat exchange component 300 can be limited, thereby further improving the position accuracy of the installation of the first heat exchange component 300.

[0082] In some embodiments, at least one first positioning hole 31a is a waist-shaped hole. Then, taking the case where the first positioning hole 31a is provided on the first heat exchange component 300 as an example, if there is a certain error in the distance between the two first positioning holes 31a during the processing of the first heat exchange component 300, the first positioning column 111 corresponding to the waist-shaped hole can be inserted into different positions on the waist-shaped hole to avoid the first heat exchange component 300 from being unable to be installed.

[0083] In some embodiments, at least one first positioning hole 31a is a circular hole, so that the position accuracy of the installation of the first heat exchange component 300 can be ensured through the circular hole. The circular hole can be a φ7 diameter circular hole, or a circular hole of other sizes, which is not limited in the present application.

[0084] In some embodiments, the number of first positioning holes 31a can be two, so that the accuracy of the positioning of the first heat exchange component 300 can be ensured, and the increase of the cost and the difficulty of installation of the battery pack caused by the need to set too many positioning supports 112 and first positioning columns 111 can be avoided.

[0085] In some embodiments, the first heat exchange component 300 is provided with a second positioning structure 31 at each end in the length direction, so that the two ends of the first heat exchange component 300 can be well positioned during installation, and the two ends of the first heat exchange component 300 can be well fixed after installation is completed.

[0086] The above is some example description of the first positioning hole 31a in the present application.

[0087] In some embodiments, the first heat exchange component 300 can include a first liquid cooling plate provided with a first cooling flow channel for the flow of a cooling medium (such as cooling liquid), so that the first liquid cooling plate can be used to cool the battery cell assembly 200.

[0088] In some embodiments, the first liquid cooling plate can include a sheet metal part. For example, the first liquid cooling plate can be a sheet metal component formed by stamping, so that the first liquid cooling plate has the advantages of low cost and easy manufacturing. Correspondingly, the second positioning structure 31 is a first positioning hole 31a formed on the first heat exchange component 300 by punching and blanking process.

[0089] In some embodiments, the first heat exchange component 300 can be adhesively fixed to the battery cell assembly 200. For example, the battery cell assembly 200 can further include an integrated busbar (Cells Contact System, CCS) 22. The integrated busbar 22 is electrically connected to the plurality of battery cells 21. The first heat exchange component 300 can be adhesively fixed to the integrated busbar 22 by thermal conductive glue or the like.

[0090] Of course, in some other embodiments, the first heat exchange component 300 can also include a first heating film for heating the battery cell assembly 200, which is not limited in the embodiments of the present application.

[0091] Please continue to refer to Figure 6 In some embodiments, the battery pack further includes a second heat exchange component 400. The second heat exchange component 400 is arranged on the side of the battery cell assembly 200 away from the first heat exchange component 300.

[0092] For example, the first heat exchange component 300 can be arranged on the top of the battery cell assembly 200, and the second heat exchange component 400 can be arranged on the bottom of the battery cell assembly 200, so that the top and bottom of the battery cell assembly 200 have good temperature control effect, so that the temperature of the battery cell assembly 200 is more uniform and controllable.

[0093] In some embodiments, the second heat exchange component 400 can include a second liquid cooling plate provided with a second cooling flow channel for cooling medium (such as cooling liquid) to flow, so that the battery cell assembly 200 can be cooled by the second liquid cooling plate.

[0094] Of course, in some other embodiments, the second heat exchange component 400 can also include a second heating film for heating the battery cell assembly 200, which is not limited in the embodiments of the present application.

[0095] Please continue to refer to Figure 7In some embodiments, the number of the box 100 is multiple, and the multiple box 100 is stacked along the first direction H1. Each box 100 is provided with the battery cell assembly 200 and the first heat exchange component 300, and the first heat exchange component 300 is located at one side of the battery cell assembly 200 along the first direction H1. Thus, through the stacking of the multiple box 100, the number of the battery cell assembly 200 can be correspondingly increased to improve the electrical energy storage capacity of the battery pack. Moreover, the battery cell assembly 200 in each box 100 is matched with the first heat exchange component 300, and the temperature control effect of all the battery cell assemblies 200 in the battery pack can also be improved to make the temperature of the battery cell assembly 200 at each position in the battery pack more uniform and controllable.

[0096] In some embodiments, the battery pack can further include a top cover 600 and a bottom cover 700. Along the first direction H1, one of the box 100 located at the outermost end is covered with the top cover 600, and the other box 100 is covered with the bottom cover 700. Thus, the packaging of the battery pack is realized through the top cover 600 and the bottom cover 700.

[0097] Please continue to refer to Figure 8 and Figure 9 In some embodiments, the battery pack further includes at least one connecting plate 500, and the outer walls of the adjacent two box 100 are connected with the connecting plate 500. Thus, the stability and reliability of the connection between the adjacent two box 100 can be improved through the connecting plate 500.

[0098] The connection between the connecting plate 500 and the box 100 can be screw fixed through a bolt, rivet fixed through a rivet, or welded fixed through welding, which is not limited in the embodiments of the present application.

[0099] In some embodiments, the outer wall of the box 100 is provided with a fixing lug 12, and the fixing lugs 12 of the adjacent two box 100 are connected and fixed. Thus, the stability and reliability of the connection between the adjacent two box 100 can be improved through the fixing lug 12.

[0100] The connection between the fixing lugs 12 can be screw fixed through a bolt, rivet fixed through a rivet, or welded fixed through welding, which is not limited in the embodiments of the present application.

[0101] In some embodiments, among the adjacent two fixing lugs 12, one fixing lug 12 is provided with a second positioning column 121, and the other is provided with a second positioning hole 122, and the second positioning column 121 is arranged in the second positioning hole 122 to improve the position accuracy of the installation of the adjacent two box 100.

[0102] In some embodiments, the outer wall of the box 100 is connected with a connecting plate 500 along at least one side of the second direction H2, and the outer wall of the box 100 is provided with a fixing lug 12 along at least one side of the third direction H3. The first direction H1, the second direction H2 and the third direction H3 are perpendicular to each other.

[0103] For example, the first direction H1 can be the height direction of the battery pack, the second direction H2 can be the width direction of the battery pack, and the third direction H3 can be the length direction of the battery pack, so that the stable and reliable connection and fixation of each side surface of the adjacent two boxes 100 can be realized. Of course, the specific directions of the first direction H1, the second direction H2 and the third direction H3 can be interchangeable, and the embodiments of the present application do not limit this.

[0104] The embodiments of the present application are described in detail above, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A battery pack, characterized by, The battery pack comprises: a box body having a containing space; an electric core assembly comprising a plurality of electric cores, the electric core assembly being at least partially arranged in the containing space; and a first heat exchange component covering the electric core assembly for heat exchange with the electric core assembly; wherein the box body is provided with a first positioning structure, the first heat exchange component is provided with a second positioning structure, and the first positioning structure and the second positioning structure cooperate to position the first heat exchange component during covering of the electric core assembly.

2. The battery pack of claim 1, wherein, One of the first positioning structure and the second positioning structure comprises a first positioning hole, and the other of the first positioning structure and the second positioning structure comprises a first positioning column which is arranged in the first positioning hole.

3. The battery pack of claim 2, wherein, The first positioning structure further comprises a positioning bracket which is mounted on the box body, and the first positioning column protrudes from a side of the positioning bracket which faces the first heat exchange component.

4. The battery pack of claim 3, wherein, The first positioning column is provided with a first locking component, and the first heat exchange component is locked between the first locking component and the positioning bracket.

5. The battery pack of claim 3, wherein, The positioning bracket comprises: a bracket bottom plate which is fixedly connected with the box body; a bracket side plate, one end of which is fixedly connected with the bracket bottom plate; and a bracket top plate which is connected to a side of the bracket side plate which is away from the bracket bottom plate, and which is fixedly connected with the first positioning column.

6. The battery pack of claim 5, wherein, The bracket bottom plate is provided with a first mounting hole which faces the first positioning column, and the diameter of the first mounting hole is greater than the maximum outer diameter of the first positioning column, so that the first positioning column can be mounted to the bracket top plate through the first mounting hole. The first positioning column is riveted or welded to the bracket top plate.

7. The battery pack of claim 5, wherein, Both ends of the bracket bottom plate in the length direction are provided with second mounting holes for mounting and fixing to the box body, and the bracket side plate is located at the middle part of the bracket bottom plate in the length direction.

8. The battery pack of claim 2, wherein, The number of the first positioning holes is at least two, at least one of the first positioning holes is a waist-shaped hole, and at least one of the first positioning holes is a circular hole; and / or The number of the first positioning holes is at least two, and the second positioning structure is arranged at each end of the first heat exchange component in the length direction.

9. The battery pack of any one of claims 1-8, wherein, The battery pack further comprises a second heat exchange component which covers a side of the electric core assembly which is away from the first heat exchange component.

10. The battery pack of any one of claims 1-8, wherein, The number of the box bodies is multiple, and the multiple box bodies are stacked along a first direction; Each of the box bodies is provided with the electric core assembly and the first heat exchange component, and the first heat exchange component is located at a side of the electric core assembly along the first direction.

11. The battery pack of claim 10, wherein, The battery pack further comprises at least one connecting plate, and the outer walls of two adjacent box bodies are connected by the connecting plate; and / or The outer wall of the box body is provided with a fixing lug, and the fixing lugs of two adjacent box bodies are fixedly connected.

12. The battery pack of claim 11, wherein, The outer wall of the box is connected with the connecting plate along at least one side in a second direction, and the outer wall of the box is provided with the fixing lug along at least one side in a third direction, the first direction, the second direction and the third direction being perpendicular to each other.

13. The battery pack of any one of claims 1-8, wherein, The box is further provided with a mounting portion located in the accommodating space, and the first positioning structure is mounted on the mounting portion.

14. An electrical device, characterized by A battery pack comprising the battery pack according to any one of claims 1 to 13.

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