Pulse heating current control method and control system of power battery

The invention discloses a pulse heating current control method and system for a power battery, and the method comprises the steps: determining the direct-axis feed-forward voltage UdFeedForward of a motor according to a heating gear transmitted by a battery management system; obtaining a motor direct-axis feedback current and a motor quadrature-axis feedback current, and counting a peak value of the motor direct-axis feedback current and a peak value of the motor quadrature-axis feedback current in a preset period; calculating a motor actual direct-axis current peak value and a motor actual quadrature-axis current peak value; and inputting the preset motor direct-axis current target value, the preset motor quadrature-axis current target value, the motor direct-axis feed-forward voltage, the preset motor quadrature-axis feed-forward voltage, the actual motor direct-axis current peak value and the actual motor quadrature-axis current peak value into a PI adjustment module, and outputting the motor direct-axis v