A slope stability control method for an electric vehicle

Abstract

This invention relates to the field of electric vehicle hill start assist and discloses an electric vehicle hill start stability control method, including an anti-rollback module with a braking signal. The anti-rollback module with a braking signal includes: determining the rollback information with a braking signal; if all conditions are met, entering the anti-rollback module; presetting a maximum allowed number of times to enter the anti-rollback module with braking; outputting torque from the drive motor to reduce the vehicle's rollback distance and speed, controlling the drive motor speed to be below a first speed; when the drive motor output torque remains in a stationary state equal to a first stationary time, decrementing the allowed number of times to enter the anti-rollback module with braking by 1; and determining whether the conditions for exiting the anti-rollback module with braking are met; if any one condition is met, exiting the module. By setting up an anti-rollback module with a braking signal, drivers accustomed to slowly releasing the brake pedal are prevented from accidentally exiting the anti-rollback module, improving the safety of hill starts.

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