Method for solving short-circuit problem of whole group of lithium ion battery

A lithium-ion battery, lithium battery technology, applied in the direction of circuits, battery electrodes, secondary batteries, etc., can solve problems that cannot be completely solved, and achieve the effect of improving potential safety hazards and reducing safety risks

Inactive Publication Date: 2014-03-12
JIANGSU TENPOWER LITHIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the diaphragm and electrolyte can play a role in short circuit protection to a certain extent, they cannot completely solve the problem, which is determined by the degree of short circuit.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Below in conjunction with the examples, the specific implementation of the present invention will be further described in detail. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0015] A method of the present invention for solving the short-circuit problem of the entire group of lithium-ion batteries, including the positive electrode pulping of lithium batteries, adding nano-scale lithium carbonate materials in the positive electrode pulping process of lithium batteries, the specific ratio is as follows: LiNixCoyMn1-x -y02: Li2C03=100:0.5~1.5, in the process of stirring, the battery is made by coating, rolling, sheeting, winding, liquid injection, and sealing; through the above settings, the new formula of the present invention, It can be used in all shapes of lithium-ion batteries; the effect of adding lithium carbonate to the positive electrode slurry: lithium carbonate is easily ...

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Abstract

The invention relates to the technical field of lithium ion batteries and particularly relates to a method for solving a short-circuit problem of a whole group of a lithium ion battery. The invention provides a method for rapidly cutting off current in the lithium ion battery, which can be used for effectively preventing a battery pack against the possibility of short circuit, leakage and explosion. According to the method, positive pole slurry of the lithium ion battery is included; in a positive pole slurry process of the lithium ion battery, a nano-grade lithium carbonate material is added; the specific formula is as follows: the ratio of LiNixCoyMn1-x-yO2 to Li2XO3 is 100 to (0.5-1.5); in an agitating process, the battery is prepared by coating, rolling, flaking, winding, injecting liquid and sealing.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a method for solving the short-circuit problem of the whole set of lithium-ion batteries. Background technique [0002] As we all know, lithium-ion batteries have the advantages of high voltage, high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras and laptop computers, but also widely used in electric vehicles. In terms of large and medium-sized electric equipment such as electric bicycles and electric tools, the safety requirements for lithium-ion batteries are getting higher and higher. [0003] The diaphragm is an important part of the lithium-ion battery. The diaphragm can prevent the short circuit of the positive and negative electrodes of the lithium-ion battery. Flame retardant additives and overcharge protection additives such as biphenyl, organic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42
CPCH01M4/1391H01M4/62H01M10/0525H01M10/4235Y02E60/10
Inventor 陈璇沈春平苏乐乐黄满湘钱国珠秦丽
Owner JIANGSU TENPOWER LITHIUM
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