Battery module and vehicle

Abstract

The utility model provides a battery module and a vehicle. The battery module comprises a battery cell assembly, a protective cover and a connecting assembly, the battery cell assembly comprises a busbar and a plurality of battery cell monomers. And the busbar is conductively connected with the battery cell monomers so as to communicate the plurality of battery cell monomers. The battery cell assembly comprises a first side part, the busbar is located on the first side part, and the protective cover covers the first side part. The protective cover is detachably connected with the busbar through a connecting assembly. The protective cover can be detachably connected with the busbar of the battery cell assembly through the connecting assembly, so that the protective cover can be repeatedly disassembled and used without damage in the maintenance process of the battery module, new materials do not need to be replaced, and the maintenance cost and the maintenance time of the battery module are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a battery module and a vehicle. BACKGROUND

[0002] A vehicle containing a power battery can be driven by electricity, and has advantages such as environmental protection, low cost, and high energy density during use. The maintainability of the power battery gradually highlights as the application range expands.

[0003] In related technologies, problem analysis and maintenance of the power battery need to disassemble the module upper cover, and the disassembly of the module upper cover usually uses a special tool to damage the module structure or the connecting structure. After maintenance, a new material needs to be replaced for reinstallation, resulting in an increase in repair cost and material cost. UTILITY MODEL CONTENT

[0004] The present application provides a battery module and a vehicle to solve the related technical problems.

[0005] The first aspect of the present application provides a battery module, comprising a cell assembly, a protective cover, and a connecting assembly.

[0006] The cell assembly comprises a busbar and a plurality of cell monomers; the busbar is in conductive connection with the cell monomers to communicate the plurality of cell monomers.

[0007] The cell assembly comprises a first side portion, the busbar is located at the first side portion, and the protective cover covers the first side portion; the protective cover is detachably connected with the busbar through the connecting assembly.

[0008] Optionally, the connecting assembly comprises a buckle assembly, the buckle assembly comprises a pair of buckle structures; the buckle structure comprises a base body and a plurality of clamping main bodies provided on one side of the base body, the protective cover comprises a second side portion facing the first side portion, the base body of one buckle structure is fixed to the second side portion, and the base body of the other buckle structure is fixed to the busbar.

[0009] The clamping main bodies of the pair of buckle structures are oppositely arranged, and the clamping main bodies of the pair of buckle structures can be mutually buckled and fixed or separated.

[0010] Optionally, the clamping main body comprises a hook-shaped structure.

[0011] Optionally, the clamping main body comprises a deformation connecting body and a clamping head, a first end of the deformation connecting body is connected with the clamping head, and a second end of the deformation connecting body is connected with the base body.

[0012] At least one part of the clamping head has a cross-sectional dimension greater than that of the first end in a cross section perpendicular to the length of the clamping body, and the clamping gap formed by the adjacent clamping head has a dimension smaller than the cross-sectional dimension of the at least one part of the clamping head.

[0013] Optionally, the clamping head comprises a third end and a fourth end arranged oppositely in the length direction of the clamping body, and the first end is connected to the third end; the cross-sectional dimension of the clamping head increases from the fourth end to the third end in a cross section perpendicular to the length of the clamping body.

[0014] Optionally, the base is fixedly connected to the second side and the bus bar respectively, and the adhesive force between the base and the second side and the adhesive force between the base and the bus bar are greater than the clamping force between the clamping bodies.

[0015] Optionally, the connecting assembly comprises a magnetic assembly; the magnetic assembly comprises a first magnetic component and a second magnetic component, the first magnetic component is fixed to the second side, and the second magnetic component is fixed to the bus bar; the opposite magnetic poles of the first magnetic component and the second magnetic component are different.

[0016] Optionally, the connecting assembly comprises a first connecting component arranged on the protective cover, and at least one first connecting component is arranged on the edge region of the protective cover.

[0017] Optionally, the protective cover comprises a second side facing the first side; the second side is provided with the first connecting component and a buffer component protruding from the second side, and the first connecting component and the buffer component arranged on the edge region of the protective cover are staggered.

[0018] According to the second aspect of the present application, a vehicle is provided, which comprises any battery module of the first aspect.

[0019] The technical solutions provided by the present application can achieve at least the following beneficial effects:

[0020] The protective cover of the present application can be detachably connected to the bus bar of the cell assembly through the connecting assembly, so that the protective cover can be repeatedly disassembled and used without damage during the maintenance of the battery module, and new materials do not need to be replaced, thereby reducing the maintenance cost and time of the battery module.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic perspective view of a protective cover in an exemplary embodiment of the present application;

[0023] Figure 2 is a perspective exploded structural schematic diagram of a battery module in an example embodiment of the present application;

[0024] Figure 3 is Figure 1 is a partial enlarged structural schematic diagram at A in FIG. 1;

[0025] Figure 4 is Figure 1 is a partial enlarged structural schematic diagram at B in FIG. 1.

[0026] Reference signs:

[0027] Battery module 1; protective cover 11; PC board 111; buffer 112; first side 113;

[0028] Connection assembly 12; buckle structure 121; base body 1211; clamping main body 1212; deformation connecting body 1212a; clamping head 1212b;

[0029] Battery cell assembly 13; battery cell monomer 131; busbar 132; second side 133. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments (or, modes of implementation) of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0031] If the embodiments of the present application involve directional indications or positional relationships (for example, up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships, movement conditions, etc. between components in a certain posture (as shown in the drawings); if the certain posture changes, the directional indications or positional relationships also change accordingly. In addition, the terms "first", "second", etc. in the embodiments of the present application are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0032] A vehicle containing power batteries can be driven by electricity, and has advantages such as environmental protection, low cost, high energy density, etc. during use, and the maintainability of the power batteries gradually highlights with the expansion of the application range. In the related art, problem analysis and maintenance of the power batteries need to disassemble the module upper cover, and the disassembly of the module upper cover usually uses a special tool to damage the module structure or the connection structure, and after maintenance, a new material needs to be replaced to re-install, causing an increase in repair cost and material cost.

[0033] The application provides a battery module 1. Figure 1 is a perspective structural schematic diagram of a protective cover 11 in an exemplary embodiment of the application, Figure 2 is a perspective exploded structural schematic diagram of a battery module 1 in an exemplary embodiment of the application, as Figure 1 , Figure 2 The battery module 1 comprises a cell assembly 13, a protective cover 11 and a connecting assembly 12. The cell assembly 13 comprises a busbar 132 and a plurality of cell monomers 131. The busbar 132 is in conductive connection with the cell monomers 131 to communicate the plurality of cell monomers 131. The cell assembly 13 comprises a first side portion 113, the busbar 132 is located at the first side portion 113, and the protective cover 11 covers the first side portion 113. The protective cover 11 is detachably connected with the busbar 132 through the connecting assembly 12.

[0034] In the above embodiment, the first side portion 113 can refer to a part of structure located at one side of the cell assembly 13, and the first side portion 113 is provided with positive and negative poles of the cell monomers 131, electrical connection interfaces and other functional components. The protective cover 11 covering the first side portion 113 can protect the above-mentioned functional components of the cell assembly 13, realize insulation of the cell assembly 13 and avoid external impurities from entering the inside of the cell assembly 13. The above-mentioned protective cover 11 can be detachably connected with the busbar 132 of the cell assembly 13 through the connecting assembly 12, so that the protective cover 11 can be repeatedly disassembled and used without damage during the maintenance of the battery module 1, and new materials do not need to be replaced, thereby reducing the maintenance cost and maintenance time of the battery module 1.

[0035] For example, the cell assembly 13 forms a cuboid structure, and a coordinate system is established in the length, width and height directions of the cell assembly 13. The above-mentioned first side portion 113 can be the top of the cell assembly 13 in the overall height direction of the battery module 1.

[0036] In some embodiments, as Figure 3 , Figure 4As shown, the connecting assembly 12 can be a snap assembly including a pair of snap structures 121. The snap structure 121 includes a base body 1211 and a plurality of clamping bodies 1212 arranged on one side of the base body 1211. The protective cover 11 includes a second side 133 facing the first side 113. The base body 1211 of one snap structure 121 is fixed to the second side 133, and the base body 1211 of the other snap structure 121 is fixed to the busbar 132. The clamping bodies 1212 of the pair of snap structures 121 are oppositely arranged, and the clamping bodies 1212 of the pair of snap structures 121 can be fixed or separated. The clamping bodies 1212 of the pair of snap structures 121 are clamped to each other to achieve detachable connection of the protective cover 11 and the busbar 132. Each snap structure 121 includes a plurality of clamping bodies 1212, so that a stable clamping relationship can be formed when fixed, and the protective cover 11 and the busbar 132 can be disassembled without damage when the clamping bodies 1212 are separated, thereby improving the disassembly convenience of the protective cover 11.

[0037] In the above embodiment, the clamping body 1212 can be a hook-shaped structure. The hook-shaped structure itself can be deformed under stress to enable the clamping body 1212 to be connected between the hook-shaped structures after being clamped in position, or to enable the hook-shaped structures in the clamped state to be separated from each other. The above hook-shaped clamping body 1212 structure is simple in structure, reliable in connection, and easy to separate. For example, the above hook-shaped structure arranged on the base body 1211 can form a structure similar to a magic tape.

[0038] Alternatively, Figure 3 The dashed arrows can represent the length direction of the clamping body 1212. The clamping body 1212 includes a deformation connecting body 1212a and a clamping head 1212b. The first end of the deformation connecting body 1212a is connected to the clamping head 1212b, and the second end of the deformation connecting body 1212a is connected to the base body 1211. In a cross section perpendicular to the length of the clamping body 1212, at least a part of the cross-sectional size of the clamping head 1212b is larger than the cross-sectional size of the first end, and the clamping gap surrounded by adjacent clamping heads 1212b is smaller than the cross-sectional size of at least a part of the clamping head 1212b. The above clamping head 1212b and deformation connecting body 1212a can form a limiting space between adjacent clamping bodies 1212. When one clamping head 1212b of the pair of snap structures 121 is forced to enter or exit the limiting space formed by the clamping body 1212 of the other snap structure 121, the engagement and separation of the clamping head 1212b can be achieved by deforming the clamping head 1212b driven by the deformation connecting body 1212a.

[0039] The clamping head 1212b includes a third end and a fourth end oppositely arranged along the length direction of the clamping body 1212, and the first end is connected to the third end. In a cross section perpendicular to the length direction of the clamping body 1212, the cross-sectional size of the clamping head 1212b can increase from the fourth end to the third end, so that the clamping head 1212b of one buckle structure 121 can slide into the limiting space surrounded by the clamping body 1212 of another buckle structure 121, and the clamping and limiting reliability is improved. For example, the outer surface of the clamping head 1212b can be smoothly transitioned to form a mushroom head, and the buckle structure 121 can form a mushroom buckle structure 121.

[0040] Alternatively, the clamping head 1212b can be spherical, conical, cuboid, irregular, etc., and the specific structure of the clamping head 1212b is not limited in the application.

[0041] In the above embodiment, the base body 1211 can be adhesively fixed to the second side portion 133 and the bus bar 132, respectively, and the adhesive force between the base body 1211 and the second side portion 133 and the adhesive force between the base body 1211 and the bus bar 132 are greater than the clamping force between the clamping bodies 1212, so as to avoid the pulling force between the clamping bodies 1212 during separation from causing the base body 1211 to separate from the second side portion 133 or the bus bar 132. The base body 1211 can be adhesively fixed to the second side portion 133 and the bus bar 132 by using acrylic foam glue.

[0042] In the actual assembly process, the connecting assembly 12 can be first fixed to the second side portion 133 of the protective cover 11, and adhesive is pre-applied on the bus bar 132, and then the connecting assembly 12 and the bus bar 132 are assembled and fixed during the assembly of the battery module 1.

[0043] In other embodiments, the connecting assembly 12 includes a magnetic assembly. The magnetic assembly includes a first magnetic member and a second magnetic member, the first magnetic member is fixed to the second side portion 133, and the second magnetic member is fixed to the bus bar 132, and the opposite magnetic poles of the first magnetic member and the second magnetic member are different. The magnetic assembly is used to realize the fixation and separation between the protective cover 11 and the bus bar 132, which can improve the operation feeling and simplify the operation steps.

[0044] In the above embodiment, the connecting assembly 12 includes a first connecting member arranged on the protective cover 11, and at least one first connecting member is arranged on the edge region of the protective cover 11. Arranging the first connecting member on the edge region of the protective cover 11 can increase the connection strength between the protective cover 11 and the bus bar 132, and can also avoid interference with the overall structure of the protective cover 11. The first connecting member can be the first magnetic member, the buckle structure 121, etc.

[0045] In some embodiments, the protective cover 11 comprises a second side 133 facing the first side 113, the second side 133 is provided with the first connectors and the buffer members 112 protruding from the second side 133, the first connectors and the buffer members 112 are staggered at the edge area of the protective cover 11. The buffer members 112 can be used to realize the moisture resistance of the battery cell assembly 13 and the stress buffering of the battery module 1 during transportation and use. The buffer members 112 can be buffer foam.

[0046] It should be noted that the main body of the protective cover 11 can be a PC sheet 111, the second side 133 can be a side of the PC sheet 111 facing the battery cell assembly 13, and the first connectors and the buffer members 112 can be arranged on the side.

[0047] For example, the protective cover 11 has a rectangular structure, the long edges of the second side 133 can be staggered with the first connectors and the buffer members 112, and the short edges of the second side 133 can be spaced apart with a plurality of first connectors.

[0048] The application further provides a vehicle comprising the battery module 1.

[0049] Since the protective cover 11 of the battery module 1 can be detachably connected with the busbars 132 of the battery cell assembly 13 through the connecting assembly 12, the protective cover 11 can be repeatedly disassembled and used without damage during the maintenance of the battery module 1, and new materials do not need to be replaced, thereby reducing the maintenance cost and time of the battery module 1.

[0050] It should be noted that the vehicle can be a sedan, an SUV, an off-road vehicle, a bus, a truck, a van, etc., and the application is not limited thereto.

[0051] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. A battery module, characterized in that, Includes a cell assembly (13), a protective cover (11), and a connecting assembly (12); The battery cell assembly (13) includes a bus (132) and a plurality of individual battery cells (131); the bus (132) is electrically connected to the individual battery cells (131) to connect the plurality of individual battery cells (131); The battery cell assembly (13) includes a first side (113), the busbar (132) is located on the first side (113), and the protective cover (11) covers the first side (113); the protective cover (11) and the busbar (132) are detachably connected by the connecting assembly (12).

2. The battery module according to claim 1, characterized in that, The connecting assembly (12) includes a latch assembly, which includes a pair of latch structures (121); the latch structure (121) includes a base (1211) and a plurality of snap-fit ​​bodies (1212) disposed on one side of the base (1211); the protective cover (11) includes a second side (133) facing the first side (113); the base (1211) of one latch structure (121) is fixed to the second side (133); and the base (1211) of the other latch structure (121) is fixed to the busbar (132). The snap-fit ​​bodies (1212) of the pair of snap-fit ​​structures (121) are arranged opposite to each other, and the snap-fit ​​bodies (1212) of the pair of snap-fit ​​structures (121) can be fastened together or separated.

3. The battery module according to claim 2, characterized in that, The snap-fit ​​body (1212) includes a hook-shaped structure.

4. The battery module according to claim 2, characterized in that, The snap-fit ​​body (1212) includes a deformable connector (1212a) and a snap-fit ​​connector (1212b). The first end of the deformable connector (1212a) is connected to the snap-fit ​​connector (1212b), and the second end of the deformable connector (1212a) is connected to the base (1211). On a cross section perpendicular to the length of the snap-fit ​​body (1212), at least a portion of the cross-sectional dimension of the snap-fit ​​connector (1212b) is larger than the cross-sectional dimension of the first end, and the snap-fit ​​gap dimension formed by adjacent snap-fit ​​connectors (1212b) is smaller than at least a portion of the cross-sectional dimension of the snap-fit ​​connector (1212b).

5. The battery module according to claim 4, characterized in that, Along the length of the snap-fit ​​body (1212), the snap-fit ​​connector (1212b) includes a third end and a fourth end disposed opposite to each other, with the first end connected to the third end; in a cross section perpendicular to the length of the snap-fit ​​body (1212), the cross-sectional dimensions of the snap-fit ​​connector (1212b) increase from the fourth end to the third end.

6. The battery module according to claim 2, characterized in that, The substrate (1211) is bonded and fixed to the second side (133) and the busbar (132) respectively. The adhesive force between the substrate (1211) and the second side (133) and the adhesive force between the substrate (1211) and the busbar (132) are greater than the snap-fit ​​force between the snap-fit ​​bodies (1212).

7. The battery module according to claim 2, characterized in that, The connection assembly (12) includes a magnetic suction assembly; the magnetic suction assembly includes a first magnetic suction member and a second magnetic suction member, the first magnetic suction member is fixed to the second side (133), and the second magnetic suction member is fixed to the busbar (132); the magnetic poles of the first magnetic suction member and the second magnetic suction member are opposite.

8. The battery module according to claim 1, characterized in that, The connecting component (12) includes a first connector disposed on the protective cover (11), at least one of the first connectors being disposed on the edge region of the protective cover (11).

9. The battery module according to claim 8, characterized in that, The protective cover (11) includes a second side (133) facing the first side (113); the second side (133) is provided with the first connector and a buffer (112) protruding from the second side (133), and the first connector and the buffer (112) located in the edge region of the protective cover (11) are staggered.

10. A vehicle, characterized in that, Includes the battery module (1) as described in any one of claims 1-9.

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