The invention discloses a heating method and device of a power battery and an electric vehicle, and belongs to the technical field of electric vehicles. The method comprises the following steps: determining the current temperature and the current torque demand of a power battery in the driving process of a target vehicle; under the condition that the current temperature of the power battery is smaller than a first threshold value, a motor of a target vehicle is controlled to work in a first mode, and the first mode comprises a corresponding motor control mode when heat released by an electric driving system is maximum under the condition that the current torque requirement is met; the heat released by the electric driving system comprises the sum of heat released by a motor, a motor controller and a speed reducer, and the corresponding motor control mode is obtained from preset experimental data when the heat released by the electric driving system is maximum under different torque demand conditions; and a cooling pipeline of the electric driving system is controlled to communicate with a cooling pipeline of the power battery, and heat released by the electric driving system is transmitted to the power battery.
本申请公开了一种动力电池的加热方法、装置及电动汽车,属于电动汽车技术领域。所述方法包括:确定目标车辆在行驶过程中的动力电池当前的温度和当前的转矩需求;在动力电池当前的温度小于第一阈值的情况下,控制目标车辆的电机在第一方式下工作,其中,所述第一方式包括在满足所述当前的转矩需求的情况下使电驱动系统释放的热量最大时对应的电机控制方式,所述电驱动系统释放的热量包括电机、电机控制器和减速器这三者释放热量的总和,不同的转矩需求情况下电驱动系统释放的热量最大时对应的电机控制方式由预设实验数据获得;控制所述电驱动系统的冷却管道连通所述动力电池的冷却管道,将所述电驱动系统释放的热量传输给所述动力电池。
Heating method and device of power battery and electric vehicle
一种动力电池的加热方法、装置及电动汽车
2024-03-08
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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