Torque distribution method and system for electric four-wheel-drive automobile

The invention relates to a torque distribution method and system for an electric four-wheel-drive automobile, and the method specifically comprises the steps: S1, obtaining the slip rate of rear wheels based on a reference automobile speed and the automobile speed of the rear wheels, judging whether the rear wheels slip or not, if yes, entering S2, and otherwise, ending; s2, the front axle torque distribution coefficient and the rear axle torque distribution coefficient are corrected, the corrected front axle torque distribution coefficient is made to be larger than the front axle torque distribution coefficient before correction, the corrected rear axle torque distribution coefficient is made to be smaller than the corrected rear axle torque distribution coefficient, and the front axle torque distribution coefficient and the rear axle torque distribution coefficient are the same in change amplitude; the variation amplitude is related to the slip rate of the rear wheel. The mode of increasing the transfer tor