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Motorcycle battery and preparation method thereof

A motorcycle and battery technology, applied to batteries, battery electrodes, secondary batteries, etc., can solve the problems of low self-discharge rate, loss, high energy density and storage performance, and achieve the suppression of HF generation, inhibition of decomposition, Effect of improving capacity recovery rate

Inactive Publication Date: 2017-05-10
重庆市巴南区王富机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium-ion batteries have the advantages of high working voltage, high energy density, long cycle life, low self-discharge rate, and environmental protection, and have become the development trend of secondary batteries; they have been widely used in wireless communications, digital cameras, notebook computers and other portable appliances; With the development of technology, motorcycle batteries have been given high hopes and have become the preferred power source for electric vehicles; motorcycle batteries are considered to be the preferred power source for electric vehicles because of their low price and good safety. ; However, electric vehicles have higher requirements on the energy density and storage performance of batteries, and the current motorcycle batteries, due to the presence of Mn 3+ Dissolution, a large irreversible capacity loss occurs after storage, and the negative electrode material is affected by the low charging specific capacity of graphite, which cannot meet the requirements of electric vehicles for the energy density and storage performance of power batteries. Therefore, it is necessary to develop new motorcycles battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The motorcycle battery in this embodiment includes a positive electrode, an electrolyte, and a negative electrode, wherein the positive electrode material consists of 20 parts of lithium cobaltate, 20 parts of complex cyclic ether, 2 parts of lithium iron nitrate solution, and 2 parts of scales in terms of parts by mass. Graphite, 4 parts of lithium manganate, 2 parts of binder, 2 parts of conductive agent, and 4 parts of additives; the electrolyte salt of the electrolyte consists of 20 parts of ethylene glycol dimethyl ether and 10 parts of emulsifier , 10 parts of LiCF 3 SO 3 , 10 parts of LiBF 4 Composition: The negative electrode is composed of 20 parts of acrylic emulsion, 10 parts of filler, 10 parts of invisible carbon, 2 parts of conductive agent, 4 parts of thickener, 4 parts of binder and 4 parts of oily agent in terms of parts by mass. The above flake graphite is MgO, CaO, Al 2 o 3 One or more mixtures mixed in any mass ratio, lithium manganate is LiF, Mg...

Embodiment 2

[0014] A battery for motorcycles in this embodiment includes a positive electrode, an electrolyte, and a negative electrode, wherein the positive electrode material consists of 35 parts of lithium cobaltate, 30 parts of composite cyclic ether, 3 parts of lithium iron nitrate solution, and 4 parts in parts by mass. 1 part of flake graphite, 6 parts of lithium manganate, 3 parts of binder, 4 parts of conductive agent, and 6 parts of additives; the electrolyte salt of the electrolyte consists of 35 parts of ethylene glycol dimethyl ether, 20 parts of Emulsifier, 15 parts LiCF 3 SO 3 , 15 parts of LiBF 4 Composition: The negative electrode is composed of 30 parts of acrylic emulsion, 15 parts of filler, 20 parts of invisible carbon, 4 parts of conductive agent, 5 parts of thickener, 5 parts of binder and 6 parts of oily agent in terms of parts by mass. Flake graphite is CaO, Al 2 o 3 and Li 2 CO 3 One or more mixtures mixed in any mass ratio, lithium manganate is LiF, MgF ...

Embodiment 3

[0017] The motorcycle battery in this embodiment includes a positive electrode, an electrolyte and a negative electrode, wherein the positive electrode material consists of 50 parts of lithium cobaltate, 40 parts of complex cyclic ether, 4 parts of lithium iron nitrate solution, and 6 parts of scales in terms of parts by mass. Graphite, 8 parts of lithium manganate, 4 parts of binder, 6 parts of conductive agent, and 8 parts of additives; the electrolyte salt of the electrolyte consists of 50 parts of ethylene glycol dimethyl ether and 30 parts of emulsifier in terms of parts by mass , 20 parts of LiCF 3 SO 3 , 20 copies of LiBF 4 Composition: The negative electrode is composed of 40 parts of acrylic emulsion, 20 parts of filler, 30 parts of invisible carbon, 6 parts of conductive agent, 6 parts of thickener, 6 parts of binder and 8 parts of oily agent in terms of parts by mass. Flake graphite is MgO, Al 2 o 3 and Li 2 CO 3 One or more mixtures mixed in any mass ratio, ...

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Abstract

The present invention relates to a motorcycle battery, which comprises a positive electrode, an electrolytic solution and a negative electrode, wherein the positive electrode material comprises, by mass, lithium cobaltate, compound cyclic ether, a lithium iron nitrate solution, flake graphite, lithium manganate, a binder, an electric conduction agent and an additive, the electrolytic salt of the electrolytic solution comprises, by mass, ethylene glycol dimethyl ether, an emulsifier, LiCFSO and LiBF, and the negative electrode comprises, by mass, an acrylic emulsion, a filler, amorphous carbon, an electric conduction agent, a thickener, a binder, and an oily agent. With the positive electrode material of the present invention, the decomposition of the electrolytic solution and the generation of HF can be effectively inhibited, and the capacity recovery rate after the storage of the motorcycle battery can be improved.

Description

technical field [0001] The invention relates to a motorcycle battery and a preparation method thereof, belonging to the technical field of motorcycle batteries. Background technique [0002] Energy crisis, resource shortage, and environmental pollution are severe challenges facing human beings. Finding clean, renewable, and resource-saving secondary energy is an urgent problem to be solved in order to realize the sustainable development of human society. Lithium-ion batteries have the advantages of high working voltage, high energy density, long cycle life, low self-discharge rate, and environmental protection, and have become the development trend of secondary batteries; they have been widely used in wireless communications, digital cameras, notebook computers and other portable appliances; With the development of technology, motorcycle batteries have been given high hopes and have become the preferred power source for electric vehicles; motorcycle batteries are considered ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/505H01M4/525H01M4/1391H01M10/0525
CPCH01M4/1391H01M4/364H01M4/505H01M4/525H01M10/0525H01M2220/20Y02E60/10
Inventor 王天福
Owner 重庆市巴南区王富机械厂
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