Power supply system for electric vehicle

Details Power supply system for electric vehicle Power supply system for electric vehicle

1998-03-25

1999-12-07

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

Vehicle battery charging

320103, H02J 700

Patent

active

059989602

ABSTRACT:
An electric vehicle whose wheels are powered by a d.c. power supply includes a combination of a rechargeable high-energy battery and a rechargeable high-power battery or to a hybrid electric vehicle whose wheels are powered by the d.c. power supply and an internal combustion engine. The d.c. power supply is formed by connecting a d.c. circuit which comprises a rechargeable high-power battery and a current-stiff two-quadrant chopper in parallel with the rechargeable high-power battery. When an current of the rechargeable high-power battery is increased to a value which is greater than a specified value, the chopper is activated to charge or discharge the rechargeable high-power battery, thereby reducing an current of the rechargeable high-power battery to a value which is smaller than the specified value.

REFERENCES:
patent: 3987352 (1976-10-01), Hirota
patent: 4056764 (1977-11-01), Endo et al.
patent: 4380795 (1983-04-01), Lee et al.
patent: 5532572 (1996-07-01), Okamura
patent: 5659240 (1997-08-01), King

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