US 12,330,532 B2
Brake control apparatus
Kohei Tsuchida, Hino (JP); and Suguru Kato, Hino (JP)
Assigned to Hino Motors, Ltd., Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by Hino Motors, Ltd., Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jun. 14, 2022, as Appl. No. 17/806,849.
Claims priority of application No. 2021-099978 (JP), filed on Jun. 16, 2021.
Prior Publication US 2022/0402368 A1, Dec. 22, 2022
Int. Cl. B60L 7/18 (2006.01); B60L 7/22 (2006.01); B60L 7/26 (2006.01); B60L 58/15 (2019.01)
CPC B60L 7/18 (2013.01) [B60L 7/22 (2013.01); B60L 7/26 (2013.01); B60L 58/15 (2019.02)] 4 Claims
OG exemplary drawing
 
1. A brake control apparatus of an automobile that drives drive wheels by an electric motor to which electric power is supplied from a battery and obtains a braking force by regenerative braking of the electric motor while charging the battery, comprising:
a controller including a processor configured to
determine whether a service brake of the automobile has failed based on a brake torque generated by the service brake,
when it is determined that the service brake of the automobile has failed,
operate the regenerative braking,
determine whether a vehicle speed of the automobile is changeable by a transmission of the automobile while operating the regenerative braking,
when it is determined that the vehicle speed of the automobile is changeable by the transmission while operating the regenerative braking, increase a rotation speed of the electric motor with respect to a rotation speed of the drive wheels while operating the regenerative braking, and
when it is determined that the vehicle speed of the automobile is not changeable by the transmission while operating the regenerative braking, operate the regenerative braking without increasing the rotation speed of the electric motor with respect to the rotation speed of the drive wheels.