Power supply apparatus for vehicle
AssigneesToyota Jidosha Kabushiki Kaisha, Aisin Aw Co., Ltd.
InventorsNoritake Mitsutani, Toshihiro Katsuda, Masahiro Nishiu
Life of this patent
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Abstract
When such a failure as the output from a voltage sensor becomes unavailable is detected, a controller controls a connecting section to disconnected state and controls a voltage converter to voltage unconverted state so that the voltage of a positive pole bus is outputted to the terminal of the voltage converter on the connecting section side, and performs voltage control of the positive pole bus based on the output from a voltage sensor in place of the output from the voltage sensor. Consequently, a power supply unit for a vehicle which can perform escape running while maintaining the traveling performance as much as possible even upon occurrence of failure in the sensor is provided.
Claims7
A power supply apparatus for a vehicle, comprising:
- a first power storage device;
- a power supply line for feeding power to an inverter for driving a motor;
- a first voltage converter provided between said first power storage device and said power supply line, for converting a voltage;
- a second power storage device;
- a second voltage converter provided between said second power storage device and said power supply line, for converting a voltage;
- a connection unit provided between said second power storage device and said second voltage converter, for switching an electrically connected state;
- a first voltage sensor for detecting a voltage of said power supply line;
- a second voltage sensor for detecting a voltage of a terminal on a side of said connection unit of said second voltage converter;
- and
- a control device for controlling said first and second voltage converters and said connection unit,
- when failure that renders an output from said first voltage sensor unusable is detected, said control device setting said connection unit to a non-connected state and controlling said second voltage converter to be in a voltage non-conversion state, and causes the terminal on the side of said connection unit of said second voltage converter to output a voltage of said power supply line, thereby controlling a voltage of said power supply line based on an output from said second voltage sensor instead of the output from said first voltage sensor.
Dependencies are inferred from the claim text.