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Sealing structure and sealing method of button lithium battery

A technology of sealing structure and lithium battery, which is applied in the direction of sealing materials, structural parts, battery pack parts, etc., and can solve the problems of large influence on processing accuracy and risk of liquid leakage

Active Publication Date: 2021-07-06
天津清研微能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the sealing ring 3 is set on the upper cover 2, and the winding core 4 is connected with the shell 1 and the upper cover 2 through tabs. After the pole group 4 and the upper cover 2 are installed in the shell 1, the shell is squeezed by a special sealing device The side wall 1.1 of 1 makes the side wall 1.1 shrink inward, and squeezes the sealing ring 3 to form a seal for the product. This sealing form is greatly affected by the tolerance of the material and the processing accuracy of the equipment, and there is a risk of leakage

Method used

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  • Sealing structure and sealing method of button lithium battery
  • Sealing structure and sealing method of button lithium battery
  • Sealing structure and sealing method of button lithium battery

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Embodiment Construction

[0028] In order to further understand the content of the present invention, the present invention will be described in detail below in conjunction with specific examples.

[0029] Such as Figure 2-5 As shown, according to an embodiment of the sealing structure of the button lithium battery provided by the present invention, it includes a cover 6 and a bottom case 5, and the cover 6 is connected to the bottom case 5 to fix the pole group 4 in the bottom case 5 , also includes a sealant 7, the bottom shell 5 is a double-layer side wall structure composed of an outer wall 5.1 and an inner wall 5.2, a sealant groove 5.3 is formed between the outer wall 5.1 and the inner wall 5.2, and a supporting structure is arranged on the surface cover 6 and a plurality of liquid holes, the side wall of the cover 6 is inserted into the sealant groove 5.3, and the cover 6 is separated from the bottom case 5 by the support structure to prevent short circuit, and the sealant is injected into the ...

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Abstract

The invention relates to a sealing structure and a sealing method of a button lithium battery. The sealing structure comprises a surface cover, a bottom shell and a sealant, the surface cover is connected with the bottom shell to fix a pole group in the bottom shell, the bottom shell is a double-layer side wall structure formed by an outer wall and an inner wall, and a sealant groove is formed between the outer wall and the inner wall. The surface cover is provided with a supporting structure and a plurality of liquid passing holes, and the side wall of the surface cover is inserted into the sealant groove. According to the invention, the bottom shell and the surface cover are sealed and fixed and the pole group is sealed in the bottom shell by adopting a mode of pouring and curing the sealant solution, so that the sealing effect is good, the liquid leakage risk caused by compression sealing by adopting a sealing ring is avoided, the whole manufacturing mode is simple and convenient, extrusion sealing by special sealing equipment is not needed, and the product quality is ensured.

Description

technical field [0001] The invention relates to the technical field of button lithium batteries, in particular to a sealing structure and a sealing method of button lithium batteries. Background technique [0002] With the development and progress of society, people's life is becoming more and more intelligent and portable, and the appearance of various electronic devices greatly facilitates people's life. Button lithium batteries are widely used in various smart devices. [0003] At present, the sealing form of the button lithium battery is mainly in the form of a rubber sealing ring, which has a greater risk of leakage. Such as figure 1 As shown, the sealing ring 3 is set on the upper cover 2, and the winding core 4 is connected with the shell 1 and the upper cover 2 through tabs. After the pole group 4 and the upper cover 2 are installed in the shell 1, the shell is squeezed by a special sealing device The side wall 1.1 of 1 shrinks the side wall 1.1 inwards and squeez...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/109H01M50/153H01M50/186H01M50/193
CPCY02E60/10
Inventor 王晓峰牛志宽江斌
Owner 天津清研微能科技有限公司
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