CN214411350U - Battery cover plate sealing structure - Google Patents

Abstract

The utility model discloses a battery cover plate sealing structure, including the light aluminum sheet that is equipped with the through-hole and the electrode that is equipped with utmost point post, utmost point post penetrates this through-hole, the inner peripheral surface of through-hole and the surface of utmost point post all have plated the film through high temperature solidification, still be equipped with the soft sealing material of cooling shaping after the melting between the film on the through-hole and the film on the utmost point post. The utility model discloses the film has been plated through high temperature solidification in the inner peripheral surface of through-hole and the surface of utmost point post, high temperature solidification can improve the firm degree of adhesion of film, pour into the cooling shaping behind the fused sealing material into again, fused sealing material can improve the bonding with the film, slight clearance between the reduction, make the sealing material sealing performance after the shaping better, sealing material is soft after the shaping simultaneously, can effectively prevent in the transportation, the charge-discharge in-process is difficult to appear because of vibrations, the security that improves the battery and use.

Description

Battery cover plate sealing structure

Technical Field

The utility model relates to a battery field specifically is a battery cover plate seal structure.

Background

The power battery is an important component of a new energy battery, has the greatest advantages of high energy and no pollution, and is the development direction of new energy automobiles and energy storage power stations, so the safe use performance of the battery is particularly important. The sealing of the top cover of the power battery is the power battery which is applied in the current market and has important guarantee on the safety of the battery, the sealing mode between the top cover and the battery pole is mostly pressed by screwing or riveting a nut, the looseness easily occurs in the transportation and charging and discharging processes due to vibration in the sealing mode, the sealing failure of the battery is caused, and therefore the leakage of electrolyte is caused, the short circuit or capacity attenuation of the battery is caused, and the potential safety hazard is caused to the battery.

Disclosure of Invention

For solving the problem that prior art exists, the utility model provides a sealed effectual battery apron seal structure.

The utility model provides a battery cover plate seal structure, is including the smooth aluminum sheet that is equipped with the through-hole and the electrode that is equipped with utmost point post, utmost point post penetrates this through-hole and is insulated with smooth aluminum sheet, the inner peripheral surface of through-hole and the surface of utmost point post all have plated the film through high temperature solidification, still be equipped with the soft sealing material of cooling shaping after the melting between the film on the through-hole and the film on the utmost point post.

The improvement is further that the smooth aluminum sheet is provided with a flanging protruding upwards at the position surrounding the circle of the through hole, and the pole penetrates into a hole position surrounded by the flanging.

In a further improvement, the inner circumferential surface of the flange is flush with the inner circumferential surface of the through hole, and the inner circumferential surface of the flange and the inner circumferential surface of the through hole are both plated with films.

Further improved, the top surface of the flanging is plated with a thin film.

Further improved, capillary holes are formed in the outer surface of the pole, the inner circumferential surface of the through hole, the inner circumferential surface of the flange and the top surface of the flange.

The further improvement, the electrode still includes the limiting plate with utmost point post vertical fixation connection, the limiting plate is located the below of light aluminum sheet.

Further improve, still the cover is equipped with soft insulating pad on the utmost point post, insulating pad is located between limiting plate and the light aluminum sheet and is insulating with the light aluminum sheet.

In a further improvement, the sealing material is a hot-melt type sealant.

In a further improvement, the upper part of the pole is also provided with a fixing plate for fixing the electrode and the smooth aluminum sheet.

The utility model discloses the film has been plated through high temperature solidification in the inner peripheral surface of through-hole and the surface of utmost point post, high temperature solidification can improve the firm degree of adhesion of film, pour into the cooling shaping behind the fused sealing material into again, fused sealing material can improve the bonding with the film, slight clearance between the reduction, make the sealing material sealing performance after the shaping better, sealing material is soft after the shaping simultaneously, can effectively prevent in the transportation, the charge-discharge in-process is difficult to appear because of vibrations, the security that improves the battery and use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an enlarged schematic view at a of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

Referring to fig. 1 and 2, the battery cover plate sealing structure comprises a smooth aluminum sheet 1 provided with a through hole and an electrode 2 provided with a pole 21, wherein the pole 21 penetrates into the through hole and is insulated from the smooth aluminum sheet 1, the inner circumferential surface of the through hole and the outer surface of the pole 21 are both plated with a film 3 through high-temperature solidification, and a soft sealing material 4 formed by cooling after melting is further arranged between the film 3 on the through hole and the film 3 on the pole 21. In this embodiment, the film 3 is firmly adhered to the inner peripheral surface of the through hole by high-temperature solidification, and the molten sealing material 4 is injected to fill the gap, thereby improving the sealing performance, and the sealing material 4 is soft after cooling, thereby having a shock absorbing function and being helpful for preventing looseness caused by vibration. The sealing material 4 is generally a hot-melt type sealant, and is melted and injected to be cooled and molded in use.

As a further improvement of the above embodiment, the smooth aluminum sheet 1 is provided with a flange 11 protruding upwards at a position surrounding the through hole for one circle, the pole 21 penetrates into a hole position surrounded by the flange 11, and the inner circumferential surface of the flange 11 and the inner circumferential surface of the through hole are both plated with the film 3. Set up this turn-ups 11 can be better carry out spacingly to utmost point post 21. In order to facilitate processing and coating, the inner circumferential surface of the flanging 11 is flush with the inner circumferential surface of the through hole, the inner circumferential surface of the flanging 11 and the inner circumferential surface of the through hole are coated, and after the sealing material 4 is injected, the depth is increased due to the existence of the flanging 11, the depth of the formed sealing material 4 is also increased, so that the sealing effect is improved, and the electrode 2 and the smooth aluminum sheet 1 are bonded more firmly. In addition, the top surface of the turned edge 11 is coated with the film 3, and the film 3 can wrap the corners of the top surface and the inner peripheral surface of the turned edge 11, so that the film 3 is effectively prevented from peeling off from the corners, and the sealing effect is further improved. Furthermore, capillary holes are formed in the outer surface of the pole 21, the inner circumferential surface of the through hole, the inner circumferential surface of the flange 11 and the top surface. The capillary holes can enhance the adhesion of the film 3, and in actual processing, the surface can be treated by a chemical method to generate the capillary holes.

As a further improvement of the above embodiment, the electrode 2 further includes a limiting plate 22 vertically and fixedly connected to the post 21, and the limiting plate 22 is located below the smooth aluminum sheet 1 and insulated from the smooth aluminum sheet 1. The limiting plate 22 can limit the electrode 2, prevent the electrode 2 from loosening to the outside of the aluminum flake 1, and simultaneously the limiting plate 22 can prevent the electrolyte in the battery from entering between the electrode 2 and the through hole to a certain extent, and prevent the electrolyte from corroding the film 3 and the sealing material 4 to a certain extent; certainly for further improvement prevent the corrosive effects of electrolyte to film 3 and sealing material 4 still the cover is equipped with soft insulating pad 5 on utmost point post 21, insulating pad 5 is located between limiting plate 22 and the smooth aluminum sheet 1, because insulating pad 5 is soft material, can deform according to the roughness in surface during the use to better isolated electrolyte. In addition, the upper portion of utmost point post 21 still is equipped with the fixed plate 6 that is used for making electrode 2 and smooth aluminum sheet 1 fixed, but this fixed plate 6 threaded connection is on utmost point post 21 upper portion, or bonds, perhaps welds, perhaps moulds plastics and connect, and this fixed plate 6 is relative with limiting plate 22, plays the clamping action, can be better fix electrode 2, further prevents not hard up of electrode 2.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "arranged" are to be construed broadly and may include, for example, arranged connections, detachable connections, or integral connections; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims (9)

1. The utility model provides a battery cover plate seal structure, is including light aluminum sheet (1) that is equipped with the through-hole and electrode (2) that are equipped with utmost point post (21), utmost point post (21) penetrate this through-hole and with light aluminum sheet (1) insulating, its characterized in that: the inner peripheral surface of the through hole and the outer surface of the pole (21) are plated with films (3) through high-temperature solidification, and a soft sealing material (4) formed by melting and cooling is further arranged between the films (3) on the through hole and the films (3) on the pole (21).

2. A battery cover plate sealing structure according to claim 1, wherein: the aluminum flake (1) is provided with a flanging (11) protruding upwards at a position surrounding the through hole by a circle, and the pole (21) penetrates into a hole position surrounded by the flanging (11).

3. A battery cover plate sealing structure according to claim 2, wherein: the inner peripheral surface of the flanging (11) is flush with the inner peripheral surface of the through hole, and the inner peripheral surface of the flanging (11) and the inner peripheral surface of the through hole are both plated with films (3).

4. A battery cover plate sealing structure according to claim 3, wherein: the top surface of the flanging (11) is plated with a film (3).

5. A battery cover plate sealing structure according to claim 3, wherein: capillary holes are formed in the outer surface of the pole (21), the inner peripheral surface of the through hole, the inner peripheral surface of the flange (11) and the top surface of the flange.

6. A battery cover plate sealing structure according to claim 1, wherein: electrode (2) still include with utmost point post (21) perpendicular fixed connection's limiting plate (22), limiting plate (22) are located the below of light aluminum sheet (1) and are insulated with light aluminum sheet (1).

7. The battery cover plate sealing structure according to claim 6, wherein: still the cover is equipped with soft insulating pad (5) on utmost point post (21), insulating pad (5) are located between limiting plate (22) and smooth aluminum sheet (1).

8. A battery cover plate sealing structure according to claim 1, wherein: the sealing material (4) is a hot-melt type sealant.

9. A battery cover plate sealing structure according to any one of claims 1 to 8, wherein: the upper part of the pole column (21) is also provided with a fixing plate (6) for fixing the electrode (2) and the aluminum flake (1).

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