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Preparation method and application method of lithium ion battery

A lithium-ion battery and lithium titanate technology, which is applied in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve problems such as potential safety hazards and achieve high safety effects

Active Publication Date: 2014-07-09
TANGSHAN JINON ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the potential of the carbon electrode after lithium intercalation is very close to that of metal lithium, when the battery is overcharged, metal lithium is easy to precipitate on the surface of the carbon electrode, which reacts with the electrolyte to produce a flammable gas mixture, thus causing a safety hazard

Method used

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  • Preparation method and application method of lithium ion battery

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Effect test

Embodiment 1

[0024] Such as figure 1 Shown, a kind of preparation method of lithium ion battery comprises the steps:

[0025] 101. Prepare the negative electrode slurry by adding 10-50 parts of one or more of Ketjen black and carbon black, 10-50 parts of CMC, 1-10 parts of iron oxalate and 30-100 copies of SBR;

[0026] 102. Prepare positive electrode slurry by adding 1-50 parts of one or more of Ketjen black, carbon black and conductive graphite, 10-50 parts of PVDF, 1-10 parts of lithium iron phosphate per 1000 parts of lithium iron phosphate by weight ratio parts of oxalic acid and NMP;

[0027] 103, coating the positive electrode slurry and the negative electrode slurry on the positive electrode material and the negative electrode material respectively;

[0028] 104, baking the coated positive electrode material and negative electrode material in a vacuum environment at 110-130°C;

[0029] 105, winding the baked positive electrode material and negative electrode material into a bat...

Embodiment 2

[0045] This embodiment provides a method for using a lithium-ion battery produced according to the method for preparing a lithium-ion battery in the above-mentioned embodiments, and the lithium-ion battery is used to replace alkaline dry batteries and is used in electronic products.

[0046] At present, the initial voltage of alkaline dry batteries produced in China is basically 1.66V, and the termination discharge voltage is zero V. However, as long as the adaptive voltage of domestic ordinary household electronic products is controlled between 1.2V and 1.6V, it is completely consistent with the voltage of alkaline dry batteries, and the termination voltage of the lithium-ion battery is controlled at 1.2V, which has better performance than alkaline dry batteries. Potential and voltage range advantage, it is a safer and more reliable new environmentally friendly battery to replace alkaline batteries for household electronic products and electric toys.

[0047]The lithium-ion b...

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Abstract

The invention relates to a preparation method and an application method of a lithium ion battery. The preparation method comprises the steps of preparing negative paste, preparing positive paste, coating a positive material and a negative material with the positive paste and the negative paste, respectively; baking the coated positive material and negative material in a vacuum environment at the temperature of 110 to 130 DEG C; sequentially winding the baked positive material and negative material to form a cell according to the sequence of the positive material, a diaphragm, the negative material and a diaphragm; loading the cell into a shell to form a lithium battery negative electrode, filling with electrolyte, and welding a cap to form a lithium battery positive electrode. The lithium ion battery prepared by the preparation method is large in electric capacity, good in safety, strong in conductivity, capable of substituting for an existing alkaline dry battery and reducing the environmental pollution and high in recycling value.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a method for preparing and using a lithium-ion battery. Background technique [0002] At present, it can only be used for relatively high-end electronic products, such as microphones, stereos, etc., because in order to sell the product, the electronic product manufacturer must design the battery power supply as a lithium battery to meet the needs of the product grade, and part of the increased cost of the lithium battery The price of the product is totally affordable. However, due to the low value of the product itself, ordinary household electronic products cannot bear the cost of batteries accounting for a large proportion of the price of electronic products. It will exceed the price of the battery itself, which is difficult for consumers to bear. [0003] Most of the current negative electrode materials for lithium-ion batteries are lithium-intercalated carbon materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1397H01M4/62
CPCH01M4/1391H01M4/1397H01M4/628H01M10/0525H01M10/058Y02E60/10
Inventor 李富俊张贺
Owner TANGSHAN JINON ELECTRONICS TECH
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