VEHICLE POWER SUPPLY DEVICE
First Claim
1. A vehicle power supply device that is mounted in a vehicle that is provided with an internal combustion engine, the device comprising:
- a first power supply;
a second power supply that is connected in parallel to the first power supply;
a DC-DC converter that is connected between the first power supply and the second power supply;
a determination device that determines whether or not a fuel supply to the internal combustion engine has stopped;
a deceleration detecting device that detects a deceleration of the vehicle; and
a control device that controls the DC-DC converter, wherein,when it is determined by the determination device that the fuel supply to the internal combustion engine has stopped, the control device charges the second power supply using regenerative power that is supplied to the second power supply via the DC-DC converter, and,when a deceleration of the vehicle is detected by the deceleration detecting device, and it is also determined by the determination device that the fuel supply to the internal combustion engine has not been stopped, the control device is able to charge the second power supply using regenerative power that is supplied to the second power supply via the DC-DC converter.
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Accused Products
Abstract
When the fuel supply to an internal combustion engine has stopped due to a vehicle starting to decelerate or the like, and the speed of the vehicle is greater than a predetermined speed, then a controller causes a power generator to operate in a first power generating mode. The controller charges a capacitor by using regenerative power that is output from the power generator to supply power from the power generator to the capacitor via a DC-DC converter. When the stopping of the fuel supply to the internal combustion engine is cancelled as a result of the engine revolution speed reaching a predetermined revolution speed (for example, an idling revolution speed) in conjunction with the speed of the vehicle dropping to the predetermined speed, the power generator can be kept in the first power generating mode.
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Citations
4 Claims
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1. A vehicle power supply device that is mounted in a vehicle that is provided with an internal combustion engine, the device comprising:
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a first power supply; a second power supply that is connected in parallel to the first power supply; a DC-DC converter that is connected between the first power supply and the second power supply; a determination device that determines whether or not a fuel supply to the internal combustion engine has stopped; a deceleration detecting device that detects a deceleration of the vehicle; and a control device that controls the DC-DC converter, wherein, when it is determined by the determination device that the fuel supply to the internal combustion engine has stopped, the control device charges the second power supply using regenerative power that is supplied to the second power supply via the DC-DC converter, and, when a deceleration of the vehicle is detected by the deceleration detecting device, and it is also determined by the determination device that the fuel supply to the internal combustion engine has not been stopped, the control device is able to charge the second power supply using regenerative power that is supplied to the second power supply via the DC-DC converter. - View Dependent Claims (2, 3, 4)
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Specification