Dual voltage electrical system

Details Dual voltage electrical system Dual voltage electrical system

1987-01-20

1988-05-10

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 17, 320 35, 322 90, H02J 714

Patent

active

047438304

ABSTRACT:
A dual voltage motor vehicle electrical system. First and second batteries are series connected across the output terminals of a battery charging generator. A converter is provided that can charge the first battery from the second battery or charge the second battery from the first battery. The voltages across the batteries are sensed and the battery with the lower voltage is charged from the other battery. The system has current limit and temperature limit controls for protecting semiconductor switches that are utilized in the system.

REFERENCES:
patent: 3667025 (1972-05-01), Campbell et al.
patent: 3671843 (1972-06-01), Huntzinger et al.
patent: 4047088 (1977-09-01), Himmler
patent: 4179647 (1979-12-01), Cummins et al.
patent: 4236107 (1980-11-01), Templin
patent: 4281277 (1981-07-01), Lakey
patent: 4479083 (1984-10-01), Sullivan
patent: 4492912 (1985-01-01), Nowakowski

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