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US 11,299,138 B2Granted
Hybrid vehicle control device
AssigneeHonda Motor Co., Ltd.
InventorsIsao Shokaku, Ryuichi Takao, Kanichiro Ogiya, Yoshiaki Nedachi
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Abstract
A control device for a hybrid vehicle, wherein when starting an engine using a first battery, if the residual capacity of the first battery is not enough to start the engine because of the reduced-voltage of the first battery, the engine is started by driving an ACG starter supplied with electricity from a second battery having a voltage rated value different from that of the first battery.
Claims13
A control device of a hybrid vehicle, comprising:
- a driving electric motor,
- a first battery for supplying electric power to the driving electric motor,
- a second battery for supplying electric power to a plurality of accessories, wherein:
- an engine of the hybrid vehicle is started by the driving electric motor,
- the control device further comprises a backflow prevention unit configured to prevent current flowing from the first battery from flowing back into the second battery,
- the first battery is connected to the driving electric motor via a line,
- the second battery is connected to the line via the backflow prevention unit,
- the first battery and the second battery have rated voltages of different voltages,
- the second battery is a battery having a lower voltage than the first battery, and
- a voltage converting unit that converts a voltage of the first battery to correspond to a voltage of the second battery, wherein:
- the first battery and the second battery comprise different rated voltages, and
- at least one of the first battery or the second battery supplies electric power to the driving electric motor to start the engine.
9 more elements
Dependencies are inferred from the claim text.