Battery charging systems for road vehicles

Details Battery charging systems for road vehicles Battery charging systems for road vehicles

1978-03-20

1980-07-01

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 61, 363 59, H02J 714

Patent

active

042108560

ABSTRACT:
A road vehicle battery charging system for a dual voltage electrical supply includes a conventional alternator/rectifier assembly for charging the main battery and a d.c. to d.c. converter connected to charge an auxiliary battery in series with the main battery. The converter includes an autotransformer with primary windings in series with respective transistors across the main battery and further windings connecting the transistor collectors in series with diodes to the auxiliary battery. The transistors form part of an oscillator which produces an a.c. waveform with a peak-to-peak voltage slightly less than twice the main battery voltage--the deficiency being made up by virtue of the further windings.

REFERENCES:
patent: 3151287 (1964-09-01), Pintell
patent: 3667025 (1972-05-01), Campbell et al.
patent: 3671843 (1972-06-01), Huntzinger et al.
patent: 3900784 (1975-08-01), Seike

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