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US 6,642,679 B2Granted
Car motor driving apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsKazuo Nagatake, Tsuyoshi Shinohara, Isao Kishimoto, Masami Hirata
Life of this patent
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Abstract
In a car body provided with a battery with a low output voltage of 12 V, a step-up circuit unit is connected between the battery and an electromechanical energy converting section. In a car provided with a battery with a high output voltage of 36 V, the battery is connected directly to the electromechanical energy converting section.
Claims16
A car motor driving apparatus comprising:
- an electromechanical energy converting section having an inverter section for converting direct current into alternating current and a control circuit for controlling at least the inverter section, said electromechanical energy converting section driving a car-mounted motor by applying a specific voltage output from the inverter section;
- a main storage battery for supplying power at a battery voltage to the electromechanical energy converting section;
- a step-up unit connectably or disconnectably arranged between said main storage battery and said electromechanical energy converting section in accordance with the battery voltage from the main storage battery:
- a power board on which the inverter section is mounted:
- a control board on which the control circuit is mounted:
- and
- a step-up board on which the step-up unit is mounted:
- wherein
- a control signal is output from the control circuit to the step-up unit, the battery voltage from the main storage battery is stepped up by the step-up unit, and it is supplied to the electromechanical energy converting section when the step-up unit is mounted on a car body, and
- a control signal is output from the control circuit to the inverter section and the battery voltage from the main storage battery is supplied to the electromechanical energy converting section without being stepped-up when the step-up unit is not mounted on a car body.
7 more elements
The car motor driving apparatus comprising:
- an electromechanical energy converting section for driving a car-mounted motor by applying a specific voltage thereto;
- a main storage battery for supplying power at a battery voltage to the electromechanical energy converting section;
- a step-up unit connectably or disconnectably arranged between the main storage battery and the electromechanical energy converting section;
- and
- control means for disconnecting said step-up unit from between said main storage battery and said electromechanical energy converting section when the output voltage gets to correspond to the driving voltage of said electromechanical energy converting section as a result of the replacement of said main storage battery and connecting said main storage battery to said electromechanical energy converting section, wherein
- the battery voltage from the main storage battery is stepped-up and supplied to the electromechanical energy converting section when the step-up unit is connected between the electromechanical energy converting section and the main storage battery, and
- the battery voltage from the main storage battery is supplied to the electromechanical energy converting section when the step-up unit is disconnected between the electromechanical energy converting section and the main storage battery.
4 more elements
A car motor driving apparatus comprising:
- an electromechanical energy converting section for driving various motors in a car by applying specific voltages to the motors;
- a main storage battery for supplying a voltage to the electromechanical energy converting section;
- a step-up unit for stepping up the output voltage of the main storage battery to the driving voltage of said electromechanical energy converting section when the output voltage of the main storage battery is lower than the driving voltage of said electromechanical energy converting section;
- and
- a selector switch for connecting said main storage battery to said electromechanical energy converting section when the output voltage of said main storage battery corresponds to the driving voltage of said electromechanical energy converting section, whereas connecting said step-up unit between said main storage battery and said electromechanical energy converting section when the output voltage of said main storage battery is lower than the driving voltage of said electromechanical energy converting section.
2 more elements
A car motor driving apparatus comprising:
- a plurality of electromechanical energy converting sections for driving at least an engine starter, an electric power steering motor, a wiper motor, a window motor, and an air conditioner motor in a car by applying specific voltages to the motors;
- a main storage battery for supplying a voltage to the electromechanical energy converting section;
- a step-up unit for stepping up the output voltage of the main storage battery to the driving voltage of said electromechanical energy converting section when the output voltage of the main storage battery is lower than the driving voltage of said electromechanical energy converting section;
- and
- a selector switch for connecting said main storage battery to said electromechanical energy converting section when the output voltage of said main storage battery corresponds to the driving voltage of said electromechanical energy converting section, whereas connecting said step-up unit between said main storage section and said electromechanical energy converting section when the output voltage of said main storage battery is lower than the driving voltage of said electromechanical energy converting section, wherein
- said electromechanical energy converting section is composed of an inverter section for performing direct-current-to-direct-current conversion and a control circuit section for controlling at least said inverter section, the inverter section and control circuit section being modularized and capable of being installed on and removed from a desired part of the body of said car.
3 more elements
A car motor driving apparatus comprising:
- a plurality of electromechanical energy converting sections for driving at least an engine starter, an electric power steering motor, a wiper motor, a window motor, and an air conditioner motor in a car by applying specific voltages to the motors;
- a main storage battery for supplying a voltage to the electromechanical energy converting section;
- and
- a step-up unit which is provided between said main storage battery and said electromechanical energy converting section and steps up the output voltage of said main storage battery to the driving voltage of said electromechanical energy converting section when the output voltage of said main storage battery is lower than the driving voltage of said electromechanical energy converting section, and which is removed from between said main storage battery and said electromechanical energy converting section when the output voltage of said main storage battery is higher than the driving voltage of said electromechanical energy converting section, wherein
- said electromechanical energy converting section is composed of an inverter section for performing direct-current-to-direct-current conversion and a control circuit section for controlling at least said inverter section, the inverter section and control circuit section being modularized and capable of being installed on and removed from a desired part of the body of said car, and
- said step-up unit is capable of being installed and removed from between said main storage battery and said electromechanical energy converting section.
3 more elements
Dependencies are inferred from the claim text.