Battery heating control method, device and system and vehicle

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Battery heating control method, device and system and vehicle

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WANG PENG / YU LEI / LI PENG

The invention relates to a battery heating control method, device and system and a vehicle, the method is applied to the vehicle, the method comprises the steps that oscillating d-axis voltage and zero-q-axis voltage are injected through a plurality of electric drives of the vehicle respectively, the d-axis voltage and the zero-q-axis voltage are used for generating oscillating current on a high-voltage bus, and the high-voltage bus is connected with the d-axis voltage and the zero-q-axis voltage; meanwhile, each electric drive is prevented from generating torque in the oscillation heating process; the phases of the oscillating d-axis voltages injected into the multiple electric drives are coordinated, so that the phases of the oscillating currents injected into the high-voltage bus by the multiple electric drives are in a specified relation; and heating the battery on the high-voltage bus by using the coordinated oscillating current. According to the invention, the current is injected into the battery by using multiple electric drives, so that the temperature of the battery can be quickly and effectively improved.

本公开涉及一种电池加热的控制方法、装置、系统及车辆，所述方法应用于车辆，该方法包括：利用所述车辆的多个电驱分别注入振荡的d轴电压和零q轴电压，所述d轴电压和零q轴电压用于在高压母线上产生振荡电流，同时避免各电驱在振荡加热过程中产生扭矩；对所述多个电驱分别注入的所述振荡的d轴电压的相位进行协调，使得所述多个电驱注入到所述高压母线的振荡电流的相位为指定关系；利用协调后的所述振荡电流对所述高压母线上的电池进行加热。本公开通过利用多电驱向电池中注入电流，能够快速有效的提高电池的温度。