Battery heating system and battery heating control method

Abstract

The invention discloses a battery heating system and a battery heating control method. The battery heating system comprises a liquid injection pot, a water pump, a heater, a battery heating pipeline and a heat management module controller. The battery heating control method comprises: the heat management module controller receives working mode information sent by a VCU, and judges whether a battery heating cycle loop can be opened or not; if the battery heating cycle loop can be opened, average temperature information obtained by averaging multiple detection points in a battery is obtained from a BCU through the VCU; furthermore, whether the average temperature is lower than the first specified temperature TI or not is judged; if not, the battery heating cycle loop is closed; if so, the heating power of the heater in the battery heating cycle loop is started and controlled; and the rotation speed of the water pump in the battery heating cycle loop is started and controlled. By means of the battery heating system and the battery heating control method disclosed by the invention, the purposes of heating a power battery and performing heating management can be realized; and thus, normal use of a battery of an automobile battery in a low-temperature environment can be ensured.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a battery heating system and a battery heating control method. Background technique [0002] In order to solve the shortage of petroleum energy and reduce urban air pollution, the task of manufacturing electric vehicles is imperative, but at the current stage of manufacturing electric vehicles, there are the following significant problems to be solved: [0003] 1) Electric vehicles cannot operate in winter (low temperature environment), because according to the characteristics of the power battery, the battery cannot be charged in a low temperature environment below 0°C; [0004] 2) When the electric vehicle is in a low-temperature environment, the discharge capacity is greatly reduced. When the ambient temperature is below -10°C, it can only play 80% of the total power, reducing the driving range by about 10km; [0005] In the prior art, electric vehicles use battery ...

AI Technical Summary

Problems solved by technology

[0003] 1) Electric vehicles cannot operate in winter (low temperature environment), because according to the characteristics of the power battery, the battery cannot be charged in a low temperature environment below 0°C;

[0004] 2) When the electric vehicle is in a low-temperature environment, the discharge capacity is greatly reduced. When the ambient temperature is below -10°C, it can only play 80% of the total power, reducing the driving range by about 10km;

If the above problems cannot be solved, it will affect the development of electric vehicles

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