Vehicle power supply
First Claim
Patent Images
1. :
- A vehicle power supply which feeds power to a motor-generator and an auxiliary equipment or regenerates power from the motor-generator, comprising;
a first power supply having a first electric storage device and a first inverter;
a second power supply having a second electric storage device and a second inverter;
state-of-charge detecting means for detecting the state-of-charge of each of the first and second electric storage devices; and
controlling means for performing feeding control or regeneration control on the first and second power supplies in accordance with signals from the state-of-charge detecting means and signals on an operating status of a vehicle, wherein the regeneration control is performed such that the first power supply regenerates power for preference when the state-of-charge of the first electric storage device is less than a predetermined high state-of-charge threshold, and the second power supply regenerates power for preference when the state-of-charge of the first electric storage device is not less than the predetermined high state-of-charge threshold, and the feeding control is performed such that, the second power supply feeds power for preference when the state-of-charge of the second electric storage device is not less than a predetermined low state-of-charge threshold, and the first power supply feeds power for preference when the state-of-charge of the second electric storage device is less than the predetermined low state-of-charge threshold.
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Abstract
A vehicle power supply for a hybrid-powered electric automobile is adapted to feed power to a motor-generator or regenerate power therefrom, and the motor-generator is caused to serve to produce vehicle-driving power. The vehicle power supply of the invention includes two power supplies having an electric storage device respectively. Discharge or regeneration is controlled so that one electric storage device is always maintained in a highly charged condition and the other electric storage device is always maintained nearly in an empty condition. Thus, a margin of regeneration is always kept, so that full use can be made of the regenerative brake whenever the use of the brake is required.
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Citations
4 Claims
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1. :
- A vehicle power supply which feeds power to a motor-generator and an auxiliary equipment or regenerates power from the motor-generator, comprising;
a first power supply having a first electric storage device and a first inverter;
a second power supply having a second electric storage device and a second inverter;
state-of-charge detecting means for detecting the state-of-charge of each of the first and second electric storage devices; and
controlling means for performing feeding control or regeneration control on the first and second power supplies in accordance with signals from the state-of-charge detecting means and signals on an operating status of a vehicle, wherein the regeneration control is performed such that the first power supply regenerates power for preference when the state-of-charge of the first electric storage device is less than a predetermined high state-of-charge threshold, and the second power supply regenerates power for preference when the state-of-charge of the first electric storage device is not less than the predetermined high state-of-charge threshold, and the feeding control is performed such that, the second power supply feeds power for preference when the state-of-charge of the second electric storage device is not less than a predetermined low state-of-charge threshold, and the first power supply feeds power for preference when the state-of-charge of the second electric storage device is less than the predetermined low state-of-charge threshold. - View Dependent Claims (4)
- A vehicle power supply which feeds power to a motor-generator and an auxiliary equipment or regenerates power from the motor-generator, comprising;
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2. :
- A vehicle power supply which feeds power to a motor-generator and an auxiliary equipment or regenerates power from the motor-generator, comprising;
a first power supply having a first electric storage device and a first inverter;
a second power supply having a second electric storage device and a second inverter;
state-of-charge detecting means for detecting the state-of-charge of each of the first and second electric storage devices; and
controlling means for performing feeding control or regeneration control on the first and second power supplies in accordance with signals from the state-of-charge detecting means and signals on an operating status of a vehicle, wherein the regeneration control is performed such that, the first power supply alone regenerates power when the state-of-charge of the first electric storage device is less than a predetermined high state-of-charge threshold, and the second power supply alone or the first and second power supplies regenerate power when the state-of-charge of the first electric storage device is not less than the predetermined high state-of-charge threshold, and the feeding control is performed such that, the second power supply alone feeds power when the state-of-charge of the second electric storage device is not less than a predetermined low state-of-charge threshold, and the first power supply alone or the first and second power supplies feed power when the state-of-charge of the second electric storage device is less than the predetermined low state-of-charge threshold. - View Dependent Claims (3)
- A vehicle power supply which feeds power to a motor-generator and an auxiliary equipment or regenerates power from the motor-generator, comprising;
Specification