Lithium ion power battery

A power battery and lithium-ion technology, applied in the field of lithium-ion power batteries, can solve problems such as low temperature and high temperature

Pending Publication Date: 2019-08-16
长沙聚能充新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a lithium-ion power battery, which can effectively solve the problems of high or low battery temperature, achieve temperature control, improve battery life and improve production efficiency, etc.

Method used

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Embodiment Construction

[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0054]The technical solution of the present invention is: a lithium-ion power battery, including a battery cell, a metal casing for accommodating the battery cell, an electrolyte injected into the metal casing, and a top fixedly connected to the metal casing. Cover; the cell includes a positive electrode sheet, a negative electrode sheet, and a diaphragm spaced between the positive electrode sheet and the negative electrode sheet, and is sequentially laminated or wound to form an electric cell; the positive electrode sheet is provided with a positive electrode lug; The negative pole sheet is provided with a negative pole tab; the top cover is provided with a positive pole pole electrically connected to the positive pole pole, and a negative pole pole electrically connected to the negative pole pole; the negative pole piece includes a negative pole A current c...

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Abstract

The invention discloses a lithium ion power battery. The lithium ion power battery comprises a battery cell, a metal shell, an electrolyte and a top cover which are fixedly connected on the metal shell; the battery cell comprises a cathode piece, an anode piece and a separator; the cathode piece and the anode piece are respectively provided with a cathode tab and an anode tab; the top cover is provided with a cathode polar column and an anode polar column; the anode piece comprises an anode current collector and an anode active material layer; the cathode piece comprises a cathode current collector and a cathode active material layer, the anode piece is provided with heat conduction and heat collection bodies, the heat conduction and heat collection bodies are current collectors of the front surface or/and the reverse surfaces of the anode current collector being not partially coated with the anode active material layers, the at least two heat conduction and heat collection bodies arestacked to form a heat converge channel which is connected on the metal shell through a heat transfer part which is in electric insulation. The problem of the too high or too low temperature of the battery can be effectively solved, the temperature can be controlled, the life of the battery can be improved, and the production efficiency can be improved.

Description

[0001] (1) Technical field [0002] The invention relates to a lithium ion battery, in particular to a lithium ion power battery. [0003] (2) Background technology [0004] Transportation brings double pressure on energy crisis and environmental pollution. It is urgent to vigorously develop and research efficient, clean and safe new energy vehicles to achieve energy saving and emission reduction. Lithium-ion batteries have become the best candidates for new energy vehicle power systems due to their advantages such as high specific energy, no pollution, and no memory effect. However, lithium-ion batteries are very sensitive to temperature. Only in a suitable temperature range can the battery pack be discharged efficiently and maintain good performance. High temperature will make the aging speed of lithium-ion battery faster, the thermal resistance will increase faster, the number of cycles will be reduced, the service life will be shortened, and even cause problems such as bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/615H01M10/625H01M10/654H01M10/6551H01M10/655H01M10/0525H01M10/058
CPCH01M10/613H01M10/615H01M10/625H01M10/654H01M10/6551H01M10/655H01M10/0525H01M10/058H01M2220/20Y02E60/10Y02P70/50
Inventor 邱伯谦邱则有
Owner 长沙聚能充新能源有限公司
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