Shell assembly structure of battery module

Abstract

The utility model provides a shell assembly structure of a battery module, which is used for accommodating the battery module. The shell assembly structure comprises an upper shell, a lower shell and a sealing frame. The upper shell is provided with an upper connecting part, the upper connecting part is annularly arranged at the opening of the upper shell, the surface of the upper connecting part is provided with an upper contact surface and a side contact surface, and the upper contact surface is adjacent to the side contact surface. The lower shell is provided with a lower connecting part, the lower connecting part is annularly arranged at the opening of the lower shell, the upper connecting part is connected with the lower connecting part to form an accommodating space, and the accommodating space is used for accommodating one or more battery modules. The sealing frame is arranged on the outer side of the upper connecting part and abuts against the upper contact face and the side contact face of the upper shell. Therefore, the problem of insufficient strength of the body of the battery module can be solved, the battery module in the shell and internal electronic components are further protected, and meanwhile, the waterproof effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of shell structures, in particular to a kind of shell assembly structure for battery module. BACKGROUND

[0002] As an indispensable energy in modern life, batteries are widely used in various fields, such as electric vehicles and electronic products. In the field of electric vehicles, the shell of the battery system must have sufficient structural strength to prevent the battery module from being squeezed and damaged when the vehicle is hit, and must also ensure that water vapor, dust and liquid do not penetrate into the battery module in different environments to avoid shortening the service life of the battery. Generally, plastic shells are used to prevent collision, squeezing and water, but the strength of plastic material is low and cannot fully protect the battery in the case of high-speed collision and squeezing. Although the use of metal shells can increase the squeezing force, the overall cost and weight increase, which is not suitable for electric vehicles as a whole.

[0003] Therefore, the utility model is directed at the above prior art problems, and further proposes a shell assembly structure for a battery module that can increase the strength of the shell when the battery is externally squeezed, so that the shell can withstand higher external squeezing force to solve the problems of the prior art. SUMMARY

[0004] In view of the above problems, the utility model aims to provide a shell assembly structure for a battery module that is waterproof, anti-squeezing and anti-collision. When the battery module is squeezed or hit by external force, the utility model can increase the strength of the shell, so that the shell can withstand greater squeezing force, prevent short circuit and fire caused by squeezing of the battery module in collision or other special environments, ensure the safety of the battery module during use, and achieve simple structure, weight reduction and cost reduction.

[0005] To achieve the above purpose, the utility model provides a shell assembly structure for a battery module for accommodating the battery module. The shell assembly structure includes an upper shell, a lower shell and a sealing frame. The upper shell is provided with an upper connecting portion, the upper connecting portion is annularly arranged around the opening of the upper shell, and the surface of the upper connecting portion has an upper contact surface and a side contact surface, and the upper contact surface is adjacent to the side contact surface. The lower shell is provided with a lower connecting portion, the lower connecting portion is annularly arranged around the opening of the lower shell, and the upper connecting portion is connected to the lower connecting portion to form a containing space for containing one or more battery modules. The sealing frame is arranged outside the upper connecting portion and abuts against the upper contact surface and the side contact surface. Therefore, the sealing frame can improve the problem of insufficient strength of the battery module body, thereby protecting the battery module and internal electronic components, and increasing the waterproof effect through the sealing frame.

[0006] In some embodiments, the upper connecting portion comprises a first stopper, a second stopper, and a receiving groove, the first stopper is located outside the second stopper, and the first stopper and the second stopper are side by side, the receiving groove is located between the first stopper and the second stopper, and the receiving groove is used to connect the lower connecting portion.

[0007] In some embodiments, the lower connecting portion comprises a first protrusion, a second protrusion, and a groove, the first protrusion, the second protrusion, and the groove correspond to the positions of the upper connecting portion to connect the upper connecting portion, the first protrusion is located outside the second protrusion, and the first protrusion and the second protrusion are side by side, and the groove is located between the first protrusion and the second protrusion.

[0008] In some embodiments, the shell assembly structure further comprises a first sealing glue and a second sealing glue. The first sealing glue is arranged between the upper connecting portion and the lower connecting portion to connect the upper connecting portion and the lower connecting portion. The second sealing glue is arranged on the upper contact surface, and the second sealing glue is adhered between the upper shell and the sealing frame.

[0009] In some embodiments, gaps are provided between the top of the sealing frame and the position of the upper shell center protrusion and between the sealing frame and the lower shell. The top of the sealing frame is bent inwardly to form an L-shaped structure, forming a first supporting portion and a second supporting portion, the first supporting portion is connected to the upper contact surface, and the second supporting portion is connected to the side contact surface.

[0010] In some embodiments, the upper connecting portion is provided with a hollow hole, and the lower connecting portion is provided with a guide block, the hollow hole corresponds to the guide block, and in the state that the upper shell is connected to the lower shell, the guide block is clamped in the hollow hole.

[0011] According to the above, the shell assembly structure of the battery module has the following effects:

[0012] (1) Lightweight design: reduce the overall weight and improve the endurance of the battery module in application.

[0013] (2) Easy assembly: easy to assemble or disassemble, more time and cost saving when maintaining or replacing the internal battery module.

[0014] (3) Anti-collision and anti-crushing: sufficient structural strength to avoid damage and crushing of the battery module when subjected to external force impact.

[0015] (4) High sealing property: can effectively prevent water and dust in different environments.

[0016] Therefore, the shell assembly structure of the battery module can improve safety, reduce overall weight and manufacturing cost, and prolong service life of the battery module and improve overall efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of the shell assembly structure of the utility model;

[0018] Figure 2 is an exploded view of the shell assembly structure of the utility model;

[0019] Figure 3 is a sectional view of the shell assembly structure of the utility model;

[0020] Figure 4 is a schematic view of another perspective of the upper shell of the shell assembly structure of the utility model;

[0021] Figure 5 is a schematic view of the lower shell of the shell assembly structure of the utility model;

[0022] Figure 6 is an exploded schematic view of another perspective of the shell assembly structure of the utility model.

[0023] Reference signs: 1 shell assembly structure; 10 upper shell; 12 upper connecting part; 121 upper contact surface; 123 side contact surface; 122 first stop part; 122A hollow hole; 124 second stop part; 126 bearing groove; 20 lower shell; 22 lower connecting part; 200 containing space; 222 first protruding part; 222A guide block; 224 second protruding part; 226 recess; 30 sealing frame; 32 first bearing part; 34 second bearing part; 40 first sealing glue; 50 second sealing glue. DETAILED DESCRIPTION

[0024] The utility model is described below based on embodiments, but the utility model is not limited to these embodiments only. In the following detailed description of the utility model, some specific details are described in detail. The utility model can also be completely understood without the description of these details for those skilled in the art. In order to avoid confusion of the essence of the utility model, well-known methods, processes, procedures, elements and circuits are not described in detail. In addition, those skilled in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0025] Please refer to Figure 1 and Figure 2As shown, the utility model provides a kind of casing assembly structure 1 of battery module, including upper shell 10, lower shell 20 and sealing frame 30.Upper shell 10 is equipped with upper connecting portion 12, and upper connecting portion 12 ring is equipped in the opening of upper shell 10, and the surface of upper connecting portion 12 has upper contact surface 121 and side contact surface 123, and upper contact surface 121 and side contact surface 123 are adjacent.Lower shell 20 is equipped with lower connecting portion 22, and lower connecting portion 22 ring is equipped in the opening of lower shell 20, and upper connecting portion 12 connects lower connecting portion 22, to form containing space 200, and containing space 200 is used to contain one or more battery modules.Sealing frame 30 is equipped in the outside of upper connecting portion 12, and is supported on upper contact surface 121 and side contact surface 123.Therefore, the problem that the body strength of battery module is insufficient can be improved by sealing frame 30, and then protect battery module and internal electronic components, and waterproof effect is increased by sealing frame 30.

[0026] Please refer to Figure 3 With Figure 4 As shown, upper connecting portion 12 includes first stop portion 122, second stop portion 124 and supporting groove 126, first stop portion 122 is located in the outside of second stop portion 124, and first stop portion 122 and second stop portion 124 are side by side, supporting groove 126 is located between first stop portion 122 and second stop portion 124, and supporting groove 126 is used to connect lower connecting portion 22.

[0027] Please refer to Figure 3 With Figure 5 As shown, lower connecting portion 22 includes first protruding portion 222, second protruding portion 224 and recess 226, first protruding portion 222, second protruding portion 224 and recess 226 correspond the position of upper connecting portion 12 to connect upper connecting portion 12, first protruding portion 222 is located in the outside of second protruding portion 224, and first protruding portion 222 and second protruding portion 224 are side by side, and recess 226 is located between first protruding portion 222 and second protruding portion 224.

[0028] As Figure 3As shown, the housing assembly structure 1 further comprises a first sealant 40 and a second sealant 50. The first sealant 40 is arranged between the upper connecting portion 12 and the lower connecting portion 22 to connect the upper connecting portion 12 and the lower connecting portion 22. The second sealant 50 is arranged between the upper contact surface 121 and the side contact surface 123 to connect the upper housing 10 and the sealing frame 30. The first sealant 40 and the second sealant 50 are preferably filled adhesive or materials that can be used for adhesion, but are not limited thereto. The upper housing 10, the lower housing 20 and the sealing frame 30 can be connected by adhesion, heat melting or ultrasonic bonding. The material of the sealing frame 30 is preferably aluminum alloy, stainless steel or steel, but is not limited thereto. As described above, in the state that the upper housing 10 is connected to the lower housing 20, the first stop portion 122 is located outside the first protruding portion 222, the bearing groove 126 is connected to the first protruding portion 222, the second stop portion 124 is connected to the recess 226, and the second protruding portion 224 is connected to the inner edge of the opening of the upper housing 10. The first sealant 40 is arranged in the recess 226 to connect the second stop portion 124 of the upper housing 10 to the recess 226. The second sealant 50 is arranged on the upper contact surface 121 to adhere between the upper housing 10 and the sealing frame 30. Thus, when the battery module is subjected to external pressure, the sealing frame 30 increases the strength of the upper housing 10 and the lower housing 20, so that the upper housing 10 and the lower housing 20 can withstand higher external pressure.

[0029] Please refer to Figure 6 As shown, the top of the sealing frame 30 and the position of the center protrusion of the upper housing 10 have a gap, and the top of the sealing frame 30 is bent inward to form an L-shaped structure, forming a first bearing portion 32 and a second bearing portion 34. The first bearing portion 32 is connected to the upper contact surface 121, and the second bearing portion 34 is connected to the side contact surface 123, thereby increasing the extrusion resistance between the sealing frame 30, the upper housing 10 and the lower housing 20. The upper connecting portion 12 can be provided with a hollow hole 122A, and the lower connecting portion 22 can be provided with a guide block 222A. The hollow hole 122A corresponds to the guide block 222A, and in the state that the upper housing 10 is connected to the lower housing 20, the guide block 222A is engaged in the hollow hole 122A. Therefore, in addition to the adhesion and sealing structure described above, the engagement of the guide block 222A and the hollow hole 122A can make the upper housing 10 and the lower housing 20 more stable and prevent external impact.

[0030] In summary, the housing assembly structure of the battery module can improve the problem of the insufficient structure of the original battery module housing. When the battery module is subjected to external pressure, the structure of the present application can solve the problem of insufficient strength of the existing structure using a plastic shell, and can avoid the inward extrusion of the upper housing and the lower housing, thereby effectively protecting the internal battery module, the battery management system and electronic components, and improving the overall waterproof and dustproof effect.

[0031] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A housing assembly structure of a battery module for housing one or more battery modules, characterized by, The housing assembly structure comprises: an upper housing provided with an upper connecting portion, the upper connecting portion being annularly arranged at an opening of the upper housing, and a surface of the upper connecting portion being provided with an upper contact surface and a side contact surface, the upper contact surface and the side contact surface being adjacent to each other; a lower housing provided with a lower connecting portion, the lower connecting portion being annularly arranged at an opening of the lower housing, and the upper connecting portion being connected to the lower connecting portion to form a containing space for containing the one or more battery modules; and a sealing frame arranged outside the upper connecting portion and abutting against the upper contact surface and the side contact surface.

2. The housing assembly structure of the battery module according to claim 1, characterized by, The upper connecting portion comprises a first stop portion, a second stop portion and an abutting groove, the first stop portion being located outside the second stop portion and being arranged side by side with the second stop portion, and the abutting groove being located between the first stop portion and the second stop portion and being used for connecting the lower connecting portion.

3. The casing assembly structure of the battery module according to claim 1, wherein The lower connecting portion comprises a first protruding portion, a second protruding portion and a groove, the first protruding portion, the second protruding portion and the groove corresponding to positions of the upper connecting portion to connect the upper connecting portion, the first protruding portion being located outside the second protruding portion and being arranged side by side with the second protruding portion, and the groove being located between the first protruding portion and the second protruding portion.

4. The housing assembly structure of the battery module according to claim 1, characterized by Further comprising: a first sealing adhesive arranged between the upper connecting portion and the lower connecting portion and connecting the upper connecting portion and the lower connecting portion; and a second sealing adhesive arranged at the upper contact surface and adhering between the upper housing and the sealing frame. The center of the upper housing protrudes from the upper connecting portion, and gaps are present between the top of the sealing frame and the position of the center of the upper housing protruding from the upper connecting portion, and between the sealing frame and the lower housing.

5. The casing assembly structure of the battery module according to claim 1, wherein The top of the sealing frame is inwardly bent to present an L-shaped structure, forming a first abutting portion and a second abutting portion, the first abutting portion being connected to the upper contact surface, and the second abutting portion being connected to the side contact surface.

6. The casing assembly structure of the battery module according to claim 5, wherein 7. The housing assembly structure of the battery module according to claim 1, wherein the upper connecting portion is provided with a hollow hole, the lower connecting portion is provided with a guide block, the hollow hole corresponds to the guide block, and in a state where the upper housing is connected to the lower housing, the guide block is clamped in the hollow hole. ​

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