Patent 10293817 was granted and assigned to Toyota on May, 2019 by the United States Patent and Trademark Office.
A hybrid ECU reads mode information during regenerative braking, and gradually decreases regenerative braking force when a friction braking force control in accordance with a preparatory mode is started. Thereby, sudden change of deceleration of a vehicle can be prevented. The hybrid ECU 50 makes regenerative braking force disappear immediately when a friction braking force control in accordance with a collision avoidance braking mode is started during regenerative braking. Thereby, the vehicle can be slowed down with a deceleration for collision avoidance.