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Preparation method of soft package battery

A soft-pack battery and cell technology, which is applied in secondary battery manufacturing, electrolyte battery manufacturing, secondary battery and other directions, can solve the problems of long preparation time and low production efficiency, achieve fast heat conduction, improve production efficiency, and improve production efficiency. Layer simplification effect

Pending Publication Date: 2020-09-04
东莞汇洋动力科技有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a soft-pack battery, which solves the problems of the existing soft-pack batteries, such as too long preparation time and low production efficiency. The preparation method provided by the present invention greatly shortens the preparation time of the battery and improves the production efficiency of the battery. productivity

Method used

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  • Preparation method of soft package battery
  • Preparation method of soft package battery
  • Preparation method of soft package battery

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Embodiment Construction

[0034] In order to make the technical solutions and advantages of the present invention clearer, the present invention and its beneficial effects will be further described in detail below in conjunction with specific embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0035] Such as Figure 1~3 Shown, a kind of preparation method of pouch battery, comprises the following steps:

[0036] Baking: Place the laminated or wound cells in the inner cavity of the jig, the jig clamps the cell and heats the cell, and at the same time evacuates the inner cavity of the jig to a high degree of vacuum; among them, the jig clamps the cell The pressure is 0.5 ~ 1MPa, which is beneficial to the heat transfer of the fixture during baking, and accelerates the evaporation of water in the battery cell; the pressure of high vacuum is -90 ~ -100KPa. In this vacuum state, the boiling point of water is significantly reduced. Quickly escape ou...

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Abstract

The invention provides a preparation method of a soft package battery. The method comprises the following steps that a laminated or wound battery cell is placed in an inner cavity of a clamp, the clamp clamps and heats the battery cell, and the inner cavity of the clamp is vacuumized at the same time; after baking is completed, the clamp is opened to inject liquid into the battery cell, after liquid injection is completed, the clamp clamps the battery cell slightly and heats the battery cell, and meanwhile, the inner cavity of the clamp is vacuumized repeatedly to infiltrate the battery cell;after infiltration is completed, the clamp clamps the battery cell and heats the battery cell, meanwhile, the inner cavity of the clamp is vacuumized to a high degree, and formation is started; and after the formation is finished, the battery cell is packaged secondarily to finish preparation of the soft package battery. Compared with the prior art, baking, liquid injection and formation are carried out in the same clamp in a centralized manner, progressing and simplifying are carried out layer by layer, the time from baking to formation in battery cell preparation is shortened step by step, and the production efficiency of the battery is greatly improved.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a method for preparing a soft pack battery. Background technique [0002] As a new type of secondary battery, lithium-ion batteries have the advantages of high energy density and power density, high working voltage, light weight, small size, long cycle life, good safety, and environmental protection. They are widely used in portable appliances, electric tools, large Energy storage, electric transportation power supply and other aspects have broad application prospects. Lithium-ion batteries are mainly divided into cylindrical batteries, square batteries and soft pack batteries according to their shapes, while cylindrical batteries and square batteries are also called hard shell batteries. Compared with hard-shell batteries, soft-pack batteries have the advantages of flexible design, lighter weight, low internal resistance, less explosion, more cycle times, and high...

Claims

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Application Information

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IPC IPC(8): H01M10/058H01M10/0525H01M10/04G01N33/00
CPCH01M10/058H01M10/0525H01M10/0404H01M10/446G01N33/00Y02E60/10Y02P70/50
Inventor 覃关键许瑞王易玮徐勇
Owner 东莞汇洋动力科技有限公司
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