Combined shell and kinetic energy battery

Abstract

The utility model relates to the technical field of kinetic energy batteries, in particular to a combined shell and a kinetic energy battery, the combined shell is used for the kinetic energy battery and comprises a steel shell, a pole and a sealing element, one end of the steel shell is provided with a mounting hole, the part, at the mounting hole, of the steel shell is folded towards the outside of the kinetic energy battery to form a flange for encircling, and the sealing element is arranged in the flange. The pole is assembled at the mounting hole and is surrounded by the flange, a flange ring extending along the radial direction is formed on the part, arranged in the kinetic energy battery, of the pole, the outer diameter of the flange ring is larger than the inner diameter of the mounting hole, the sealing element is arranged between the steel shell and the pole, the flange extrudes a pole main body, and the flange is arranged on the pole main body. Compression is formed on the sealing piece to seal the kinetic energy battery. The technical problems of difficult rivet connection and poor explosion-proof performance of the combined battery shell in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to kinetic battery technical field, concretely relates to a combined shell and kinetic battery. BACKGROUND

[0002] At present, in the connecting mode of the combined battery shell, the rivet is cold upset on the inner and outer two surfaces of the battery shell, and metal fragments are left in the shell during the cold upsetting process, and the riveting surface of the rivet is cold upset for many times, and the shape of the cold upset rivet is difficult to control, which causes the sealing to be unable to be compacted, contact short circuit occurs, and at the same time, the steel shell and the top cover of the large cylindrical battery are made of pre-plated nickel material, and the explosion-proof is to increase the line on the steel shell or the top cover, and the line will cause the nickel plating layer to be damaged, and the corrosion resistance of the battery is reduced. SUMMARY

[0003] In order to solve the technical problems of the rivet connection of the combined battery shell and the poor explosion-proof performance in the prior art, the application provides a combined shell and a kinetic battery, which solves the above technical problems.

[0004] The technical scheme adopted by the utility model to solve its technical problems is:

[0005] The utility model provides a combined shell for kinetic battery, include: steel shell, the shape of one end of steel shell has mounting hole, the part of steel shell at mounting hole is folded to the outside of kinetic battery to form the flanging for embracing, pole column, pole column is assembled at the mounting hole is embraced by the flanging, the part of pole column configuration in kinetic battery forms the flange ring that extends along the radial, the outer diameter of flange ring is greater than the inner diameter of mounting hole, sealing element, sealing element is configured between steel shell and pole column, the flanging extrudes pole column main part, forms compression to sealing element to seal kinetic battery.

[0006] The combined shell of the utility model is used for kinetic battery, simple structure, replaces the rivet cold upsetting riveting process of the past, only the part of steel shell at mounting hole is folded to the outside of kinetic battery to form the flanging for embracing, to hold pole column and sealing element, the flanging extrudes pole column main part, forms compression to sealing element to seal kinetic battery, the part of pole column configuration in kinetic battery forms the flange ring that extends along the radial, the outer diameter of flange ring is greater than the inner diameter of mounting hole, the utility model controls the explosion-proof pressure (the thickness, diameter of flange ring) through the strength of pole column flange ring, when the pressure in kinetic battery increases, pole column will be subjected to the pressure upward, when the pressure reaches the expected value, pole column flange ring surface produces deformation, pole column and sealing element will fly out, the battery pressure relief, avoid serious accident, replace the scheme of increasing line on the steel shell or the top cover of the past, thereby solve the technical problems of the rivet connection of the combined battery shell and the poor explosion-proof performance in the prior art.

[0007] Furthermore, the mating surfaces of the steel shell and the seal are roughened to enhance the clamping force.

[0008] Furthermore, the mating surface between the pole and the seal is roughened to enhance the clamping force.

[0009] Furthermore, the seal extends radially into an isolation ring, which adheres to the inner wall of the steel shell.

[0010] Furthermore, a raised ring is formed on the side of the insulating ring facing the inside of the kinetic energy battery.

[0011] Furthermore, a gap is left between the portion of the insulating ring at the convex ring and the inner wall of the steel shell.

[0012] Another aspect of this utility model provides a kinetic energy battery, including the aforementioned combined housing.

[0013] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0014] This utility model relates to a combined housing for kinetic energy batteries. Its simple structure replaces the previous cold-forging riveting process. Only the portion of the steel shell at the mounting hole is folded outwards towards the kinetic energy battery to form a flange for holding the terminal post and seal. The flange compresses the terminal post body, thus compressing the seal to seal the kinetic energy battery. The portion of the terminal post inside the kinetic energy battery forms a radially extending flange ring. The outer diameter of the flange ring is larger than the inner diameter of the mounting hole. This utility model controls the explosion-proof pressure (flange ring thickness and diameter) through the strength of the flange ring. When the internal pressure of the kinetic energy battery increases, the terminal post is subjected to upward pressure. When the pressure reaches the expected value, the flange ring surface deforms, causing the terminal post and seal to fly out, releasing the battery pressure and preventing serious accidents. This replaces the previous method of adding engraving lines to the steel shell or top cover, thus simultaneously solving the technical problems of difficult riveting connections and poor explosion-proof performance in existing combined battery shells. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the overall structure of the combined housing of this utility model;

[0016] Fig. 2 This is a force analysis diagram of the pole of the combined housing of this utility model;

[0017] Fig. 3 This is a schematic diagram of another embodiment of the combined housing of this utility model.

[0018] Wherein: 1-steel shell, 11-mounting hole, 12-flanged edge; 2-pole post, 21-flange ring; 3-seal, 31-isolation ring, 32-convex ring, 33-gap. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] like Figs. 1-3 As shown, this utility model provides a combined housing for a kinetic energy battery, including a steel shell 1, a terminal post 2, and a sealing element 3. One end of the steel shell 1 has a mounting hole 11. The portion of the steel shell 1 at the mounting hole 11 is folded outward towards the kinetic energy battery to form a flange 12 for encircling. The terminal post 2 is assembled at the mounting hole 11 and is encircled by the flange 12. The portion of the terminal post 2 disposed inside the kinetic energy battery forms a radially extending flange ring 21. The outer diameter of the flange ring 21 is larger than the inner diameter of the mounting hole 11. The sealing element 3 is disposed between the steel shell 1 and the terminal post 2. The flange 12 compresses the main body of the terminal post 2, thereby compressing the sealing element 3 to seal the kinetic energy battery.

[0021] This utility model relates to a combined housing for kinetic energy batteries. It features a simple structure, replacing the traditional cold-forging riveting process. Only the portion of the steel shell 1 at the mounting hole 11 is folded outwards towards the kinetic energy battery to form a flange 12 for encircling the battery, clamping the terminal post 2 and the sealing element 3. The flange 12 compresses the main body of the terminal post 2, thus compressing the sealing element 3 to seal the kinetic energy battery. The portion of the terminal post 2 disposed within the kinetic energy battery forms a radially extending flange ring 21. The outer diameter of the flange ring 21 is larger than the inner diameter of the mounting hole 11. This utility model controls the explosion-proof pressure (thickness and diameter of the flange ring 21) through the strength of the flange ring 21 of the terminal post 2. Fig. 2 As shown, the force F exerted on the terminal 2 by the internal pressure of the kinetic energy battery is numerically equal to the sum of the frictional force f between the terminal 2 and the sealing ring and the supporting force F' of the sealing element 3 after the flange is bent. That is, without considering gravity and atmospheric pressure, when the battery is running normally, F = +f + F'. When the internal pressure of the kinetic energy battery increases, the terminal 2 will be subjected to upward pressure. When the pressure reaches the expected value, the flange ring 21 of the terminal 2 will deform, and the terminal 2 and the sealing element 3 will fly out, the battery will depressurize, and serious accidents will be avoided. This replaces the previous solution of adding engraving lines to the steel shell 1 or the top cover, thus solving the technical problems of difficult riveting connection and poor explosion-proof performance of the combined battery shell in the existing technology.

[0022] In a preferred embodiment of this utility model, the mating surfaces of the steel shell 1 and the sealing element 3 are rough surfaces to enhance the clamping force.

[0023] In a preferred embodiment of this utility model, the mating surfaces of the pole post 2 and the sealing element 3 are rough surfaces to enhance the clamping force.

[0024] like Fig. 3 As shown, in a preferred embodiment of this invention, the sealing element 3 extends radially to form an isolation ring 31, which adheres to the inner wall of the steel shell 1. The sealing element 3 and the isolation ring 31 are integrated into one unit. This simplifies the structure and thus the assembly process.

[0025] Furthermore, a raised ring 32 is formed on the side of the isolation ring 31 facing the inside of the kinetic energy battery, thereby better performing the isolation function.

[0026] Furthermore, a gap 33 is left between the portion of the insulating ring 31 at the convex ring 32 and the inner wall of the steel shell 1. When the convex ring 32 abuts against the core inside the power battery, the gap 33 can serve as a deformation buffer space for the convex ring 32, thereby improving the overall structural stability.

[0027] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A combination housing for a kinetic battery, characterized by, Comprising: a steel shell (1) having a mounting hole (11) formed at one end thereof, a portion of the steel shell (1) at the mounting hole (11) being folded outward to form a flange (12) for embracing; a pole post (2) fitted at the mounting hole (11) embraced by the flange (12), a portion of the pole post (2) configured inside the kinetic battery having a flange ring (21) extending radially, the flange ring (21) having an outer diameter greater than an inner diameter of the mounting hole (11); a seal (3) configured between the steel shell (1) and the pole post (2), the flange (12) pressing against a body of the pole post (2) to compress the seal (3) to seal the kinetic battery.

2. The combination housing of claim 1, wherein, A mating surface of the steel shell (1) and the seal (3) is roughened to improve the holding force.

3. The combination housing of claim 1, wherein, A mating surface of the pole post (2) and the seal (3) is roughened to improve the holding force.

4. The combination housing of claim 1, wherein, The seal (3) extends radially to form a spacer ring (31) abutting against an inner wall of the steel shell (1).

5. The combination housing of claim 4, wherein, The spacer ring (31) has a convex ring (32) formed on a side thereof facing the inside of the kinetic battery.

6. The combination housing of claim 5, wherein, A gap (33) is left between a portion of the spacer ring (31) at the convex ring (32) and the inner wall of the steel shell (1).

7. A kinetic battery, characterized by A combined shell as claimed in any one of claims 1-6.

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