Battery cover sealing structure, manufacturing method thereof and battery

A manufacturing method and a technology of a bonding structure, which are applied in the battery cover sealing structure and its manufacturing method, and the field of batteries, can solve problems such as low sealing performance, achieve the effects of improving sealing performance, satisfying industrial production, and simple manufacturing methods

Pending Publication Date: 2021-06-04
杜欢阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a battery cover sealing structure and its manufacturing method and battery to solve the technical problem of low sealing performance of the battery cover sealing structure in the prior art

Method used

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  • Battery cover sealing structure, manufacturing method thereof and battery
  • Battery cover sealing structure, manufacturing method thereof and battery
  • Battery cover sealing structure, manufacturing method thereof and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] as attached Figure 6 As shown, a method for manufacturing a battery cover sealing structure is provided in Embodiment 1, comprising the following steps:

[0054] Step 1, cleaning and oxidizing the central pole 1 and the battery cover 2;

[0055] Step 2. Insert the center pole 1 on the battery cover 2, and reserve an annular gap 5 between the center pole 1 and the battery cover 2; insert the glass fixing body 3 between the center pole 1 and the battery cover 2, and the glass fixed body 3 is sleeved on the central pole 1; under the protection of the atmosphere, after heating and heat preservation treatment, the glass fixed body 3 is respectively connected to the central pole 1 and the battery cover 2 are melted and connected, cooled, and cleaned until the surface of the glass fixed body 3 is bright; wherein, during the heating process, the heating temperature is 920-980°C; the holding time is 10-15min; during the cooling process, the cooling rate is 10-15min;

[0056] ...

Embodiment 2

[0059] as attached Figure 7 As shown, a method for making the sealing structure of the battery is provided in Example 2. The principle of Example 2 is basically the same as that of Example 1, except that in Step 2, the phosphate glass or bismuth glass Prepare a viscous slurry; inject the viscous slurry of phosphate glass or bismuth glass into the annular gap 5, and heat at 100°C for 20 minutes; then raise the temperature to 150°C for 5 minutes, and keep it warm for 20 minutes; Then heat up to 240°C for 5 minutes and keep it warm for 20 minutes; then, under the protection of the atmosphere, heat it to 410-600°C and keep it warm for 10-20 minutes; make the viscous slurry into a glass fixing ring 4, and make the glass fixing ring 4 and The central pole 1, the battery cover 2 and the glass fixed body 3 are closely connected; then cooled to room temperature at a cooling rate of 10-15°C / min to obtain the battery cover sealing structure, and seal the battery cover Cleaning and poli...

Embodiment 3

[0062] as attached Figure 8 As shown, a method for making the battery sealing structure is provided in Example 3. The principle of Example 3 is basically the same as that of Example 1, except that in Step 2, phosphate glass or bismuth glass is used Prepare printing paste; print the printing paste into the annular gap 5 by printing process, heat at 100°C for 20 minutes; then raise the temperature to 150°C for 5 minutes, and keep it warm for 20 minutes; then heat up to 240°C for 5 minutes , and keep it warm for 20 minutes; then, under the protection of the atmosphere, heat it to 410-600°C and keep it warm for 10-20 minutes; make the viscous slurry into a glass fixing ring 4, and make the glass fixing ring 4 respectively connect with the center pole 1, the battery The cover plate 2 and the glass fixed body 3 are closely connected; then cooled to room temperature at a cooling rate of 10-15°C / min to obtain the battery cover sealing structure; and the battery cover sealing structur...

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Abstract

The invention discloses a battery cover sealing structure and a manufacturing method thereof and a battery. The battery cover sealing structure comprises a central pole, the central pole is sleeved in a battery cover plate, and an annular gap is arranged between the central pole and the battery cover plate; the glass fixing body and the glass fixing ring are sequentially and tightly inserted into the annular gap in a penetrating manner, and the glass fixing body and the glass fixing ring are arranged on the central pole in a sleeving manner; the glass fixing ring is arranged below the glass fixing body, and the upper surface of the glass fixing ring is tightly connected with the lower surface of the glass fixing body; the glass fixing body is arranged between the central pole and the battery cover plate, so that the sealing property and the sealing strength between the central pole and the battery cover plate are effectively improved, and the glass fixing ring is arranged between the central pole and the battery cover plate, so that the corrosion of battery electrolyte to the glass fixing body is avoided, and the sealing performance of the battery cover sealing structure is improved, so the service life of the battery is prolonged; the manufacturing method is simple, and the sealing performance of the battery cover is ensured.

Description

technical field [0001] The invention relates to the technical field of battery electrode sealing technology, in particular to a battery cover sealing structure, a manufacturing method thereof, and a battery. Background technique [0002] Due to the increasingly pressing pressure on energy and environmental protection, many countries are competing to develop green energy technologies, among which lithium batteries and supercapacitor batteries are developing most rapidly. Lithium batteries and supercapacitors have the advantages of high energy ratio, light weight, long life, and environmental protection. [0003] The existing lithium battery caps are generally sealed with organic insulating sealing media, ordinary glass sealing media or ordinary materials. Organic insulating sealing media have short service life, poor sealing performance, and are not resistant to high temperatures and easily leak electrolyte; while ordinary glass sealing media can play a role Sealing effect, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/188H01M50/172H01M50/191H01M10/058H01G11/80H01G11/82H01G11/84
CPCH01G11/80H01G11/82H01G11/84H01M10/058Y02E60/10Y02P70/50
Inventor 杜欢阳
Owner 杜欢阳
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