Battery rubber nail and cover plate assembly adopting same

Abstract

The utility model discloses a battery rubber nail which comprises a columnar rubber nail main body, a nail cap is arranged at the top of the columnar rubber nail main body, a limiting guide prism is arranged below the columnar rubber nail main body, a positioning conical head is arranged below the limiting guide prism, and the positioning conical head is connected with the columnar rubber nail main body. And the positioning conical head, the limiting guide prism, the columnar plastic nail main body and the nail cap are coaxially arranged. The utility model further discloses a cover plate assembly adopting the battery rubber nail. The acting force of a plastic nail inserting machine is evenly dispersed to the columnar plastic nail body through the nail cap, overlarge pressure is prevented from being concentrated in a certain small area, over-insertion blockage or insertion deflection of the plastic nail is avoided, the bad problems of over-insertion blockage, deflection and the like of the plastic nail caused by fluctuation of the acting force of equipment can be effectively solved, and the service life of the plastic nail is prolonged. And the insertion perpendicularity of the plastic nail in the plastic nail insertion process is improved, so that the yield of the process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery glue nail structure and a cover plate assembly. Background Art

[0002] As a core component in the field of new energy industry, batteries are widely used in energy storage, electric vehicles, electric two-wheel vehicles and consumer products, and at the same time, higher requirements are put forward for the safety performance and stability performance of batteries.

[0003] The battery structure mainly includes a battery cell, a housing for accommodating the battery cell, a cover plate assembly sealed and installed on the housing, and an electrolyte filled in the battery housing. The cover plate assembly includes a cover plate, a glue nail, a sealing nail, etc. In the prior art, the battery is filled with liquid through a liquid injection hole opened on the cover plate, and then the glue nail is inserted into the liquid injection hole by a glue nail inserting machine to seal the liquid injection hole.

[0004] However, the existing glue nail structure is simply designed and has a cylindrical shape. The effect of inserting the nail mainly depends on the glue nail inserting machine to control the insertion depth and inclination. However, the glue nail inserting machine is usually affected by factors such as air cylinders and air sources, so that the force acting on the glue nail is unstable, resulting in problems such as over-insertion or inclined insertion of the glue nail, and finally increasing the defect rate of this process due to poor air tightness. Summary of the Utility Model

[0005] The utility model provides a battery glue nail and a cover plate assembly using the battery glue nail to solve the technical problems existing in the known technology, which can effectively solve the problems of over-insertion, inclination and other defects of the glue nail caused by the fluctuation of the equipment acting force, improve the verticality of the glue nail insertion in the glue nail inserting process, and thus improve the yield and production efficiency of this process.

[0006] One technical solution adopted by the utility model to solve the technical problems existing in the known technology is: a battery glue nail, including a columnar glue nail body, a nail cap is provided at the top of the columnar glue nail body, a limiting and guiding prism body is provided below the columnar glue nail body, a positioning conical head is provided below the limiting and guiding prism body, and the positioning conical head, the limiting and guiding prism body, the columnar glue nail body and the nail cap are coaxially arranged.

[0007] A limiting groove adapted to the nail driving rod of the glue nail inserting machine is provided at the top of the nail cap.

[0008] The nail cap fits with the bottom groove of the sealing nail.

[0009] The battery glue nail adopts an integrally formed structure.

[0010] The circumscribed circle of the cross-sectional profile of the limiting and guiding prism body has the same diameter as the outer circle of the columnar glue nail body.

[0011] Another technical solution adopted by the present utility model to solve the technical problems existing in the known technology is: a cover plate assembly using the above-mentioned battery glue nail, including a cover plate, a liquid injection hole is provided on the cover plate, a sunken groove is provided above the liquid injection hole, the battery glue nail is inserted into the liquid injection hole, a sealing nail is sealed on the nail cap, a groove matching the nail cap is provided at the bottom of the sealing nail, the sealing nail is arranged in the sunken groove, and the sealing nail is welded to the cover plate.

[0012] The advantages and positive effects of the present utility model are as follows: By providing a nail cap at the top of the columnar glue nail body, the acting force of the glue nail inserting machine is evenly dispersed to the columnar glue nail body by using the nail cap, preventing excessive pressure from concentrating on a small area, thereby avoiding over-insertion blockage or skewed insertion of the glue nail, and effectively solving the problems of over-insertion blockage, skewness and other defects caused by the fluctuation of the equipment acting force, improving the verticality of the glue nail insertion in the glue nail insertion process, and thus improving the yield rate of this process. At the same time, the design of the glue nail cap also adapts to the bottom structure of the sealing nail in the subsequent sealing nail welding process, improving the convenience and accuracy of the sealing nail positioning in this process, and thus improving the yield rate of the sealing nail welding process. By providing a limiting and guiding prism and a positioning conical head with positioning and guiding functions below the columnar glue nail body, the battery glue nail can be quickly and accurately inserted into the liquid injection hole and firmly fixed on the cover plate, thereby improving the yield rate and production efficiency of the glue nail insertion process. And the structure of the present utility model has few changes. Only the structure of the glue nail needs to be improved, and there is no need to make supporting changes to the cover plate and the sealing nail. It can solve the problems of glue nail positioning and anti-over-insertion. At the same time, the nail cap structure can further position the sealing nail, and also solve the problem of sealing nail positioning in the subsequent process. The structure is simple, the cost is low, and it is easy to be industrially applied. Description of the Drawings

[0013] Figure 1 The overall schematic diagram of the glue nail provided for the embodiment;

[0014] Figure 2 The cross-sectional schematic diagram of the glue nail provided for the embodiment;

[0015] Figure 3 The overall schematic diagram of the sealing nail provided for the embodiment;

[0016] Figure 4 The cross-sectional schematic diagram of the sealing nail provided for the embodiment;

[0017] Figure 5 The installation structure schematic diagram of the cover plate assembly provided for the embodiment;

[0018] Figure 6 The exploded schematic diagram of the cover plate assembly provided for the embodiment.

[0019] In the figure: 1. Glue nail; 101. Nail cap; 102. Glue nail body; 103. Limiting and guiding prism; 104. Groove; 105. Positioning conical head; 2. Sealing nail; 3. Cover plate; 301. Liquid injection hole. Detailed implementation mode

[0020] In order to further understand the invention content, features and effects of the present utility model, the following embodiments are cited and described in detail with the accompanying drawings as follows:

[0021] Please refer to Figures 1 to 6 , a battery glue nail, including a columnar glue nail body 102, a nail cap 101 is provided at the center of the top of the columnar glue nail body, a limiting and guiding prism 103 is provided below the columnar glue nail body 102, and a positioning conical head 105 is provided below the limiting and guiding prism 103. The positioning conical head 105, the limiting and guiding prism 103, the columnar glue nail body 102 and the nail cap 101 are coaxially arranged.

[0022] The nail cap can disperse the acting force of the glue nail inserting machine more evenly to the columnar glue nail body, preventing excessive pressure from concentrating on a small area, thereby avoiding problems such as over-insertion or skewed insertion of the glue nail. The limiting and guiding prism and the positioning conical head both have the functions of positioning and guiding, facilitating the battery glue nail to be inserted quickly and accurately and being fixed firmly on the cover plate. The diameter D1 of the nail cap is greater than the diameter D2 of the glue nail body and greater than the diameter D3 of the liquid injection hole. During use, the nail cap is embedded in the groove 301 above the liquid injection hole, which can effectively prevent the glue nail from falling into the battery interior and improve the yield rate of the glue nail inserting process.

[0023] A more preferred solution of this embodiment is as follows:

[0024] A limiting groove 104 adapted to the nail driving rod of the glue nail inserting machine is provided at the top of the nail cap 101. This limiting groove is adapted to the nail driving rod of the glue nail inserting machine, so that the defective rate of skewed insertion of the glue nail can be effectively reduced during glue nail insertion, facilitating the combination with the glue nail inserting machine for insertion.

[0025] The nail cap 101 fits with the bottom groove of the sealing nail 2, and the nail cap 101 is embedded in the bottom groove of the sealing nail 2. At this time, the nail cap plays a role in positioning the sealing nail, thereby improving the yield rate of the sealing nail welding process.

[0026] In summary, the nail cap can not only solve the problems of over-insertion blockage and skewed insertion of the glue nail, but also solve the nail driving positioning problem of the glue nail inserting machine and the positioning problem of the sealing nail in the subsequent process.

[0027] This battery glue nail adopts an integrally formed structure with good strength.

[0028] The circumcircle of the cross-sectional profile of the limiting and guiding prism 103 has the same diameter as the outer diameter of the columnar adhesive nail body 102.

[0029] The diameter of the nail cap of the adhesive nail is greater than 1.2 times the diameter of the adhesive nail body, so that the adhesive nail can be stuck above the liquid injection hole of the cover plate.

[0030] When using the above-mentioned adhesive nail with a nail cap, the pressure range of the nail driving rod is 100 - 500 N, while when using a conventional adhesive nail, the pressure range of the nail driving rod is 100 - 150 N. The conventional adhesive nail has higher precision requirements for the plug-in adhesive nail machine, increasing the equipment cost. Using the adhesive nail with a nail cap has lower requirements for the plug-in adhesive nail machine and can reduce the equipment cost.

[0031] The cover plate assembly using the above-mentioned battery adhesive nail includes a cover plate 3. A liquid injection hole 301 is provided on the cover plate 3. A sink is provided above the liquid injection hole 301. The battery adhesive nail 1 is inserted into the liquid injection hole. A sealing nail 2 is sealed on the nail cap 101. A groove matching the nail cap 101 is provided at the bottom of the sealing nail 2. The sealing nail 2 is arranged in the sink, and the sealing nail 2 is welded to the cover plate 3.

[0032] The above cover plate assembly uses a battery adhesive nail and a sealing nail to achieve a double-layer sealing effect, and the sealing reliability is better.

[0033] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. These all belong to the protection scope of the present invention.

Claims

1. A battery nail, comprising a columnar nail body, characterized in that: A nail cap is provided on the top of the columnar glue nail body, a limiting guide prism is provided below the columnar glue nail body, a positioning conical head is provided below the limiting guide prism, and the positioning conical head, the limiting guide prism, the columnar glue nail body and the nail cap are coaxially arranged.

2. The battery glue nail according to claim 1, characterized in that: A limiting groove matched with the nail rod of the glue nail inserting machine is arranged on the top of the nail cap.

3. The battery glue nail according to claim 1, characterized in that: The nail cap is matched with the bottom groove of the sealing nail.

4. The battery glue nail according to claim 1, characterized in that: The battery glue nail adopts an integrated molding structure.

5. The battery glue nail according to claim 1, characterized in that: The circumscribed circle of the cross-sectional profile of the position-limiting guide prism is the same as the outer diameter of the columnar glue nail body.

6. A cover plate assembly using the battery glue nail according to any one of claims 1 to 5, characterized in that: It includes a cover plate, a liquid injection hole is provided on the cover plate, a sink is provided above the liquid injection hole, the battery glue nail is inserted into the liquid injection hole, a sealing nail is sealed on the nail cap, a groove matching the nail cap is provided at the bottom of the sealing nail, the sealing nail is arranged in the sink, and the sealing nail is welded to the cover plate.

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