US 12,485,874 B2
Charging control device for hybrid electric vehicle
Mitsuru Yamaguchi, Ama (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Sep. 19, 2023, as Appl. No. 18/469,827.
Claims priority of application No. 2022-190803 (JP), filed on Nov. 29, 2022.
Prior Publication US 2024/0174215 A1, May 30, 2024
Int. Cl. B60W 20/13 (2016.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 10/26 (2006.01)
CPC B60W 20/13 (2016.01) [B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/26 (2013.01); B60W 2510/0657 (2013.01); B60W 2510/081 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A control device of a hybrid electric vehicle, the vehicle including an engine, an electric motor connected to a power transmission path between the engine and a drive wheel so as to be configured to transmit power, and a battery configured to be charged with electric power generated by the electric motor driven by the engine, the control device comprising:
an engine control unit configured to output an engine control command signal controlling the engine;
an electric motor control unit configured to output an electric motor control command signal controlling the electric motor;
an engine torque reduction control unit configured to reduce torque of the engine such that an operating point of the engine is within a predetermined engine torque stable region, in a case where a remaining charge amount of the battery decreases to a predetermined value or less; and
a charging control unit configured to control a rotational speed of the electric motor such that an actual charge amount by the electric motor becomes a predetermined target charge amount, in a state in which the operating point of the engine is set within the predetermined engine torque stable region by the engine torque reduction control unit.