US 12,304,331 B2
Power supply control system and power supply control method
Ryota Kitamoto, Wako (JP); Kenichi Shimizu, Tokyo (JP); and Yuki Kuwano, Tokyo (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jul. 22, 2021, as Appl. No. 17/382,394.
Claims priority of application No. 2020-126683 (JP), filed on Jul. 27, 2020.
Prior Publication US 2022/0024326 A1, Jan. 27, 2022
Int. Cl. B60L 50/75 (2019.01); H02J 7/00 (2006.01)
CPC B60L 50/75 (2019.02) [H02J 7/0013 (2013.01); H02J 7/00714 (2020.01); B60L 2210/40 (2013.01)] 5 Claims
OG exemplary drawing
 
5. A power supply control method for driving a power supply control system including:
an inverter connected to an electric device to perform conversion from DC power to AC power;
a first drive unit including a first fuel cell system that includes a first fuel cell and supplies DC power to the inverter, a first voltage converter that controls a voltage of a DC-side terminal of the inverter, and a first battery connected to the first voltage converter;
a second drive unit including a second fuel cell system that includes a second fuel cell and supplies DC power to the inverter, a second voltage converter that controls a current in the inverter, and a second battery connected to the second voltage converter; and
a control unit, wherein
the control unit controls the inverter and/or the first fuel cell system so that a first current value flowing through the first battery reaches a target value of the first current value and controls the second voltage converter and/or the second fuel cell system so that a second current value flowing through the second battery reaches the target value of the first current value, wherein
the control unit performs torque limit control to reduce a torque generated in the electric device by the inverter when the first current value and the second current value exceed a predetermined first threshold current value which is a threshold value of a discharge current for the first battery and the second battery, and
wherein
the control unit reduces DC power generated by the first fuel cell system when the first current value exceeds a predetermined second threshold current value set in advance and reduces DC power generated by the second fuel cell system when the second current value exceeds the second threshold current value.