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Soft package battery and heat sealing method of soft package battery

A technology of soft-pack batteries and heat-sealing wires, which is applied in the direction of secondary batteries, battery pack components, non-aqueous electrolyte batteries, etc. It can solve the problems of soft-pack battery exhaust, achieve convenient exhaust and fluid replacement, and increase service life , the effect of simple operation

Pending Publication Date: 2022-03-18
ENVISION DYNAMICS TECH (JIANGSU) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pouch battery and a pouch battery heat sealing method to solve the problem of degassing and rehydration of the pouch battery during high temperature testing and use

Method used

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  • Soft package battery and heat sealing method of soft package battery

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in this application can also be realized.

[0024] The present invention relates to a pouch battery 100, the pouch battery 100 includes a cell, an aluminum-plastic film 1, a metal tube 2 and a closure 3, wherein the aluminum-plastic film 1 has two layers and is sealed and connected to each other along the circumferential sealing line to A storage spac...

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Abstract

The embodiment of the invention relates to a soft package battery, the soft package battery comprises a battery cell, two layers of aluminum plastic films, a metal tube and a sealing piece, and the two layers of aluminum plastic films are in sealed connection with each other along a circumferential sealing line to form an accommodating space. The periphery of the metal tube is connected to the sealing line between the aluminum plastic films on the two sides in a sealed mode, the two ends of the metal tube are open, one end of the metal tube is located in the containing space, and the other end of the metal tube extends out of the containing space. A large amount of gas can influence the fastness of the aluminum plastic film or cause the fracture of the aluminum plastic film to cause the leakage of the electrolyte, and the metal pipe can discharge the gas in the accommodating space of the aluminum plastic film out of the accommodating space. The sealing part detachably seals one end, located outside the accommodating space, of the metal tube, and after gas is exhausted out of the battery, the metal tube needs to be sealed by the sealing part so as to ensure that the accommodating space of the aluminum plastic film is closed.

Description

technical field [0001] The invention relates to the technical field of pouch batteries, in particular to a pouch battery and a heat sealing method for the pouch battery. Background technique [0002] Lithium-ion battery is a widely used electric energy storage device in the market, and its application fields include mobile phones, computers, new energy vehicles, etc. Lithium-ion batteries can be divided into three categories in terms of packaging: soft-pack batteries, hard-shell batteries, and cylindrical batteries. In order to fully explore the capacity fading of the battery at high temperature, the battery will be tested for high temperature storage after the production is completed, that is, the battery in a certain circuit will be placed at high temperature, and the capacity will be tested at room temperature after a certain period of time. If the battery is placed in a high-temperature environment for a long time, especially when the battery is in high power, a large a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/30H01M50/609H01M10/0525H01M10/058
CPCH01M50/30H01M50/609H01M10/0525H01M10/058Y02P70/50
Inventor 王历川
Owner ENVISION DYNAMICS TECH (JIANGSU) CO LTD
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