Patent ID: 6216808
Filing Date: 2001-04-17
Classification: B60L,B60T

Abstract:
A brake control system for controlling a braking force applied to a wheel of an electrically operated vehicle, comprising:an electric motor operatively connected to said wheel for rotating said wheel;a battery mounted on said vehicle and electrically connected to said electric motor for driving said electric motor;motor control means for controlling said electric motor to apply a rotating force to said wheel and apply a regenerative braking torque to said wheel;a wheel brake cylinder operatively mounted on said wheel for applying a hydraulic braking force to said wheel;pressure control means for supplying pressurized brake fluid to said wheel brake cylinder in response to operation of a manually operated braking member to apply the hydraulic braking force to said wheel, and controlling the pressure in said wheel brake cylinder;voltage detection means for detecting voltage of said battery;reducing means for reducing the regenerative braking torque when the voltage of said battery detected by said detection means exceeds a predetermined upper limit; andholding means for holding said reducing means in a condition for reducing the regenerative braking torque when the amount reduced by said reducing means in a predetermined period is in transition from an increase to a decrease, said pressure control means continuing to apply the hydraulic braking force to said wheel after the transition of the increase to the decrease of the reduced amount until said vehicle stops.