Thermally conductive lithium ion battery

Abstract

The invention discloses a thermally conductive lithium ion battery. The thermally conductive lithium ion battery comprises a battery shell, a battery cell, a cathode tab and an anode tab. The cathodetab and the anode tab are arranged at the same side or two sides of a battery cell main body; the anode piece comprises an anode current collector and an anode active material layer coating the anodecurrent collector, the cathode piece comprises a cathode current collector and a cathode active material layer coating the cathode current collector, the cathode piece and the anode piece are providedwith 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 cathode current collector and the anode current collector being not partially coated with the active material layers, the at least two heat conduction and heat collection bodies are stacked at the same region up and down toform heat converge channels for heat conduction and heat collection to form a heat energy in-out heat converge channel of the battery cell; and the heat converge channels are stacked or connected withthin film heating pieces, and the heat converge channels and the thin film heating pieces form heat converge channel heating modules. The problem of the too high or too low temperature of the batterycan be solved effectively.

Description

[0001] (1) Technical field [0002] The invention relates to a lithium ion battery, in particular to a heat conduction lithium ion 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 s...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a thermally conductive lithium-ion battery, which can effectively solve problems such as excessively high or low battery temperature

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