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Dynamic type polymer lithium ion power supply and its manufacturing process

A lithium-ion battery and polymer technology, applied in the direction of electrochemical generators, circuits, electrical components, etc., can solve the problems of limiting the application and development of lithium-ion power batteries, hindering them, and preventing cracking, enhancing reliability, and avoiding damage Effect

Inactive Publication Date: 2007-05-30
黄穗阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above defects hinder and limit the application and development of lithium-ion power batteries

Method used

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  • Dynamic type polymer lithium ion power supply and its manufacturing process
  • Dynamic type polymer lithium ion power supply and its manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] (1) Preparation of negative electrode:

[0048] (1.1) Dissolve 1560 grams of polyvinylidene fluoride in N-methyl-2-pyrrolidinedione, first add 20 grams of oxalic acid, then add 500 grams of acetylene black, and finally add 22000 grams of graphite powder. After high-speed stirring, vacuum or static degassing, the slurry-like negative electrode slurry is made.

[0049] (1.2) Coating film: According to the requirements of battery product design, the negative electrode slurry is evenly coated on the front and back surfaces of the 16 micron thick copper foil. The solvent N-methyl-2-pyrrolidinedione was dried and removed at 120° C., and the thickness of the electrode strip was controlled at 160±10 microns.

[0050] (1.3) Rolling: Roll the negative pole piece to a specified thickness under a certain pressure, and control the film density and porosity of the pole piece film. The thickness of the electrode strip after rolling is controlled at 110±5 microns.

[0051] (1.4) She...

example 2

[0066] (1) Preparation of negative electrode:

[0067] (1.1) Dissolve 1,560 grams of polyvinylidene fluoride in N-methyl-2-pyrrolidinedione, first add 20 grams of oxalic acid, then add 500 grams of acetylene black, and finally add 35,000 grams of amorphous tin Lithium composite oxide SnLi ρ P  B χ o ψ . After high-speed stirring, vacuum or static degassing, the slurry-like negative electrode slurry is made.

[0068] (1.2) Coating film: According to the requirements of battery product design, the negative electrode slurry is evenly coated on the front and back surfaces of the 16 micron thick copper foil. The solvent N-methyl-2-pyrrolidinedione was dried and removed at 120° C., and the thickness of the electrode strip was controlled at 150±10 microns.

[0069] (1.3) Rolling: Roll the negative pole piece to a specified thickness under a certain pressure, and control the film density and porosity of the pole piece film. The thickness of the electrode strip after rolling is...

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Abstract

This invention relates to one series of new materials and process, which solve the current problems of safety, reliability and according of current lithium battery to improve productivity efficiency and to lower product cost. The technique dynamic polymer lithium ion power has output capacity at 1000 with energy intensity as 130 w / kg and power intensity as 950 w / kg.

Description

technical field [0001] The patent of the present invention relates to the design and production process of a dynamic polymer lithium-ion power supply. In order to realize the three high requirements of high energy, high power and high safety of the product, in the design and production of the power supply of the present invention, a series of new materials and new processes are used, such as a high-capacity high-power polymer lithium-ion battery single combined power supply Technology and multi-functional fillers are applied to power supply thermal management systems, high-strength metal shells and plastic end caps as power supply packaging, etc., which better solve the common safety, reliability and consistency problems of lithium-ion power batteries, and at the same time improve Improve production efficiency and yield, reduce product cost. The power polymer lithium-ion power supply produced by this technology can be used in various large-capacity and high-power mobile devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/40H01M10/38H01M10/0525H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 黄穗阳
Owner 黄穗阳
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