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Power lithium ion cell

A lithium-ion battery and power technology, applied in battery electrodes, secondary batteries, battery pack components, etc., can solve the problems of safety performance and high temperature cycle performance

Inactive Publication Date: 2006-11-08
潍坊光华电池有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a power lithium-ion battery to solve the problem that safety performance and high-temperature cycle performance cannot be balanced in the known technology

Method used

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  • Power lithium ion cell
  • Power lithium ion cell
  • Power lithium ion cell

Examples

Experimental program
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Embodiment Construction

[0021] A power lithium-ion battery, such as figure 1 As shown, the battery core is installed in the battery case, and the battery core is composed of four positive pole pieces 1, four negative pole pieces 2 and eight separators 3 according to the adjacent pole pieces of the opposite sex and the distance between every two adjacent pole pieces of the opposite sex. Stacked in the order separated by the diaphragm 3 and wound into a cylindrical shape (such as image 3 shown), according to the shape of the battery case, the battery core can also be wound into other shapes such as a square cylinder.

[0022] Such as figure 2 As shown, the positive electrode sheet 1 is coated with a positive electrode active material, and the negative electrode sheet 2 is coated with a negative electrode active material. Each positive electrode sheet 1 is fixed with a positive electrode ear 4a, and these positive electrode ears 4a are all connected to the battery case. The positive electrode is ele...

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PUM

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Abstract

This invention discloses a dynamic Li ionic battery, in which, the positive active material composed of the following components: LiMn20420%-90%, LiCoO210%-80% is optimized to LiMn20460%-80%, LiCoO220%-40%, multiple positive and negative pole plates in the same number are stacked in terms of the sequence that opposite pole plates are adjacent and every two of them are isolated by a membrane and winded to a trunk, the pole plates of same polarity are parallel so as to reduce the preparing difficulity for signle plates and internal resistance of batteries and increase the power.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a power lithium ion battery that can provide energy for electric vehicles, electric bicycles and the like. Background technique [0002] Traditional lithium-ion secondary batteries for communication use LiCoO 2 As the cathode active material, LiCoO 2 It has the advantages of high specific capacity, good cycle performance at high temperature and normal temperature, but LiCoO 2 The biggest disadvantage is that the safety performance is poor, and unsafe accidents such as fire and explosion are prone to occur in extreme cases such as overcharging and short-circuiting of the battery. In lithium-ion secondary batteries for communication, due to the small capacity of the battery, LiCoO 2 The dosage is small, even if there is a safety problem, it will not cause great destructive power, but if the LiCoO 2 Used alone in power lithium-ion secondary batteries, because the ca...

Claims

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Application Information

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IPC IPC(8): H01M4/131H01M4/505H01M4/525H01M10/0525H01M50/538
CPCY02E60/10
Inventor 王建武徐建华刘振华高玉光
Owner 潍坊光华电池有限公司