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Manufacturing method of plasticized electrolytic battery

A manufacturing method and electrolyte technology, which are applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, non-aqueous electrolyte batteries, etc., can solve the problems of difficult control of the electrolyte layer and high process conditions, and achieve simple and easy-to-control processes and easy penetration. Effect

Inactive Publication Date: 2007-02-14
DONGGUAN NEWPOWER ELECTRIC SCI & TECH
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Problems solved by technology

The disadvantage is that it is difficult to control the coating of a gel electrolyte layer on the surface of the positive and negative electrodes, and the process conditions are high.

Method used

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  • Manufacturing method of plasticized electrolytic battery
  • Manufacturing method of plasticized electrolytic battery
  • Manufacturing method of plasticized electrolytic battery

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[0037] The following is a specific embodiment of the present invention.

[0038] The positive electrode was prepared as follows: The slurry formulation was 91% LiCoO 2 (average particle size between 6 and 7 microns), 6% vinylidene fluoride-hexafluoropropylene copolymer, 3% carbon black, mix them into the solvent of N-methylpyrrolidone and stir to form a solid content of about 58 % of the positive electrode slurry is coated on the aluminum foil to obtain the positive electrode sheet, and after cutting, an aluminum sheet is welded on as the positive electrode lug to obtain the positive electrode.

[0039] The negative electrode was prepared in the following manner: the slurry formulation was 90% MCMB (average particle size between 15 and 18 microns), 8% vinylidene fluoride-hexafluoropropylene copolymer, 2% carbon black, and mixed them into N- A negative electrode slurry with a solid content of about 54% is formed by stirring in a solvent of methylpyrrolidone, and a negative ele...

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Abstract

This invention discloses a manufacturing method for Li batteries of plasticized electrolyte, in which, the positive and negative electrode films and membranes include polymers, which can plasticize electrolytes to gel state under high temperature and turn the films and membranes to fine interfaces under high temperature and high pressure. The manufacturing method includes: assembling the positive and negative films and membranes to a bare battery core to be sealed in a soft film bag and added with an electrolyte to be plasticized under high temperature and then to be hot-pressed once before and after the plasticization so as to get a fine plasticized electrolyte battery.

Description

Technical field: [0001] The invention relates to the technical field of polymer lithium battery products, in particular to a method for manufacturing a plasticized electrolyte lithium battery. Background technique: [0002] With the development of modern society, mobile devices have been more and more widely used, such as in the rapidly developing information and communication industry, which has formed a strong demand for high-energy batteries. Even in the well-developed automobile industry, due to the requirements of modern society for environmental protection, there are new demands for safe, reliable and large-capacity batteries. Lithium batteries and lithium-ion batteries have developed rapidly in recent years due to their high specific energy. Among them, liquid electrolyte lithium-ion batteries have been widely used in the above fields. Polymer lithium-ion batteries with colloidal (including plasticized) or solid electrolytes have also begun to be practical. The per...

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Application Information

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IPC IPC(8): H01M10/40H01M10/38H01M6/16H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 曾毓群陈立泉
Owner DONGGUAN NEWPOWER ELECTRIC SCI & TECH
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