Lithium battery

Abstract

The invention belongs to the technical field of lithium batteries, in particular to a lithium battery with the effects that the structure is simple, and the automatic heating and heat insulation can be realized. The lithium battery comprises a case, a battery cell, a protecting board, a front cover, a heating device and a temperature sensor, wherein the battery cell is accommodated in the case, the protecting board is arranged at the front end of the battery cell, the front cover is arranged at the front end of the protecting board, the output end of the temperature sensor is electrically connected with the input end of the heating device through a circuit arranged in the protecting board, and in addition, the heating device and the temperature sensor are respectively arranged in the case. Compared with the prior art, the lithium battery has the advantages that the temperature sensor and the heating device are arranged in the battery, the temperature sensor is adopted for detecting the temperature inside the battery, when the temperature inside the battery is lower than the normal discharging temperature of the lithium battery, the heating device is automatically controlled to work, the battery is heated, and when the battery restores to the normal work temperature, the heating device automatically stops working, so the constant temperature effect is reached, the lithium battery can also be normally and safely used in severe cold environment, and the application range of the lithium battery is expanded.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries, in particular to a lithium battery with simple structure and capable of automatic heating and heat preservation. Background technique [0002] As a kind of clean energy, lithium batteries have been widely used in various electronic products, such as smartphones and notebooks, due to their high voltage, long charge and discharge life, low environmental pollution and low self-discharge rate Computers, digital cameras and portable small appliances, etc. [0003] However, in the cold winter, the electronic products powered by lithium batteries may not be able to charge the battery or the standby time is shorter than other seasons. It is lower than the lowest temperature (-20°C) that ordinary lithium batteries can withstand. The low temperature will cause the protection circuit to start protection or the electrolyte will solidify to change the battery capacity, making consumers unable to us...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a lithium battery for the deficiencies of the prior art, which can be used safely and normally in areas with severe cold climates, thereby widening the application range of the lithium battery and overcoming the disadvantages of the prior art. Lithium battery cannot be used in severe cold environment

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