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Colloidal electrolyte lithium ion electrokinetic cell for electric vehicle

A colloidal electrolyte and power battery technology, applied in non-aqueous electrolyte batteries, electrolyte battery manufacturing, secondary batteries, etc., can solve the problem of poor technical performance and safety performance of battery packs, deterioration of battery consistency, changes in battery internal resistance, etc. question

Inactive Publication Date: 2007-03-14
黄穗阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of the battery, the distance between the positive and negative electrode sheets in the liquid lithium-ion power battery is due to the expansion of the electrode sheets due to repeated charging and discharging, external vibrations during vehicle driving, and decomposition and gasification of the electrolyte in the battery. Changes will occur, resulting in changes in the internal resistance of the battery, resulting in deterioration of the consistency of the battery, and deterioration of the technical performance and safety performance of the battery pack

Method used

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  • Colloidal electrolyte lithium ion electrokinetic cell for electric vehicle
  • Colloidal electrolyte lithium ion electrokinetic cell for electric vehicle
  • Colloidal electrolyte lithium ion electrokinetic cell for electric vehicle

Examples

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example 1

[0069] Manufacturing method of negative electrode sheet:

[0070] 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. The negative electrode slurry was coated on both surfaces of a 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 200±10 microns. The thickness of the electrode strip after rolling is controlled at 100±5 microns. Cut the negative electrode strip into a kitchen knife shape: the handle is an uncoated copper foil, used as a current collector, with an area of ​​20×35mm 2 ;The kitchen knife is an electrode piece, with an area of ​​156×266mm 2 .

[0071] Manufacturing method of positive electrode sheet:...

example 2

[0082] Manufacturing method of negative electrode sheet:

[0083] 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 15,000 grams of amorphous tin-lithium composite oxidation SnLi ρ P  B χ o ψ . After high-speed stirring, vacuum or static degassing, the slurry-like negative electrode slurry is made. The negative electrode slurry was coated on both surfaces of a 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. The thickness of the electrode strip after rolling is controlled at 80±5 microns. Cut the negative electrode strip into an area of ​​84×266mm 2 Strip electrodes. A nickel lead is then spot welded to the uncoated starting copper side.

[0084] Manufacturing method of positive electrode sheet:

[0085] 3650 grams of po...

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Abstract

This inventing relates to one glue electrolyte with high energy and safety lithium ion dynamic battery design and production process, which uses one series of new materials and technique, such as spot polymer to process glue polymer electrolyte, spot electrochemical publicizing to process glue polymer electrolyte and high intensity metal coating materials to process compound materials as battery shell.

Description

technical field [0001] The patent of the invention relates to the design and production process of a high-energy and high-safety lithium-ion power battery. In the design and production of this battery, a series of new materials and technologies are used, such as in-situ thermal polymerization to prepare colloidal polymer electrolytes, in-situ electropolymerization to prepare colloidal polymer electrolytes, and composite materials prepared by coating plastic films on high-strength metal surfaces as batteries. Shell, etc., better solve the safety, reliability and consistency problems that are common in lithium-ion power batteries. The colloidal electrolyte lithium-ion power battery produced by this technology can be used in various high-capacity and high-power mobile devices, such as electric bicycles, electric motorcycles, electric vehicles, electric yachts, satellite communications, unmanned aircraft, rocket launchers and Submarines use communication power and so on. Backgr...

Claims

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Application Information

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IPC IPC(8): H01M10/40H01M10/38H01M10/0525H01M10/0565H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 黄穗阳
Owner 黄穗阳
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