AUXILIARY ELECTRIC POWER SUPPLY FOR VEHICLE AND CHARGER/DISCHARGER FOR VEHICLE
First Claim
1. An auxiliary electric power supply for a vehicle, the vehicle comprising an ignition switch and an ignition key operating the ignition switch, the auxiliary electric power supply comprising:
- a first switch electrically connected to an I/O end;
a capacitor bank connected to the first switch, the capacitor bank having;
a plurality of series-connected electric double layer capacitors; and
a plurality of balanced resistances, each resistance being parallel-connected to each electric double layer capacitor, and having substantively a same resistance value;
a discharge resistance connected to the first switch; and
a controller controlling the first switch while monitoring voltage of the capacitor bank and an operating state of the ignition key of the vehicle including the auxiliary electric power supply,wherein the controller controls the first switch so as to connect the capacitor bank to the discharge resistance when the ignition switch of the vehicle is turned off, to discharge the capacitor bank and to decrease the voltage of the capacitor bank to a first voltage, at which life deterioration of the electric double layer capacitors is suppressed.
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Accused Products
Abstract
The auxiliary electric power supply for a vehicle has a first switch electrically connected to an I/O end; a capacitor bank; a discharge resistance; and a controller. The capacitor bank has series-connected electric double layer capacitors, and balanced resistances. Each of the balanced resistance is parallel-connected to each electric double layer capacitor, and has substantively the same resistance value. The capacitor bank and discharge resistance are connected to the first switch. The controller controls the first switch while monitoring the voltage of the capacitor bank and the operating state of the ignition key operating the ignition switch of the vehicle, so as to connect the capacitor bank to the discharge resistance when the ignition switch is turned off.
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Citations
8 Claims
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1. An auxiliary electric power supply for a vehicle, the vehicle comprising an ignition switch and an ignition key operating the ignition switch, the auxiliary electric power supply comprising:
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a first switch electrically connected to an I/O end; a capacitor bank connected to the first switch, the capacitor bank having; a plurality of series-connected electric double layer capacitors; and a plurality of balanced resistances, each resistance being parallel-connected to each electric double layer capacitor, and having substantively a same resistance value; a discharge resistance connected to the first switch; and a controller controlling the first switch while monitoring voltage of the capacitor bank and an operating state of the ignition key of the vehicle including the auxiliary electric power supply, wherein the controller controls the first switch so as to connect the capacitor bank to the discharge resistance when the ignition switch of the vehicle is turned off, to discharge the capacitor bank and to decrease the voltage of the capacitor bank to a first voltage, at which life deterioration of the electric double layer capacitors is suppressed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification