초록 ▼

A vehicle electrical back-up circuit and method. Vehicle electrical devices normally receive the power required for their operation from a vehicle electrical system at a first voltage. An auxiliary storage battery is provided at a second, lower voltage. Preferably, charge is maintained in the batter

A vehicle electrical back-up circuit and method. Vehicle electrical devices normally receive the power required for their operation from a vehicle electrical system at a first voltage. An auxiliary storage battery is provided at a second, lower voltage. Preferably, charge is maintained in the battery by a charging circuit powered by the vehicle electrical system. A voltage booster circuit boosts the second voltage of the auxiliary storage battery back to the first voltage, providing auxiliary electrical power available for operating the electrical devices.

대표청구항 ▼

[ We claim:] [1.] An electrical power back-up circuit for providing back-up power to a vehicle electrical device adapted for receiving the power required for its operation from a vehicle electrical system at a first, primary voltage, comprising:a storage module adapted for storing electrical energy

[ We claim:] [1.] An electrical power back-up circuit for providing back-up power to a vehicle electrical device adapted for receiving the power required for its operation from a vehicle electrical system at a first, primary voltage, comprising:a storage module adapted for storing electrical energy at a second, storage voltage which is substantially lower than the first voltage, and releasing said electrical energy over a period of time at said second voltage to provide electrical power at said second voltage; anda booster module adapted for receiving at least a portion of said electrical power provided by said storage module at said second voltage, boosting the voltage thereof from said second voltage to about the first voltage, and then providing the boosted voltage to the vehicle electrical device as auxiliary power available for its operation.