Switching power circuit to supply electric-vehicle battery charg

Details Switching power circuit to supply electric-vehicle battery charg Switching power circuit to supply electric-vehicle battery charg

1997-04-22

1998-08-25

Tso, Edward

Electricity: battery or capacitor charging or discharging

Battery or cell charging

363 37, H01M 1046

Patent

active

057986304

ABSTRACT:
A switching power circuit for battery charger, comprising a single-phase full-wave rectifier circuit formed of diodes, a half bridge circuit formed of first and second switching elements connected in series to each other via a diode; a reactor provided between the single-phase full-wave rectifier circuit and the half bridge circuit of the switching elements and having a secondary coil, a series circuit formed of two diodes connected in parallel across the half bridge circuit, a high-frequency transformer having a primary coil connected between the source terminal of the second switching element in the half bridge circuit and the common junction of the two capacitors in the two-capacitors series circuit a secondary coil at which a high-frequency power is delivered to a load forming a battery charger, and a control circuit consisting of a variable frequency multivibrator to turn on and off the first and second switching elements alternately.

REFERENCES:
patent: 4710862 (1987-12-01), Asaeda
patent: 4736283 (1988-04-01), Yasumura
patent: 5260607 (1993-11-01), Kinbara
patent: 5414611 (1995-05-01), Muto et al.
patent: 5610804 (1997-03-01), Shimizu
Contactless Charging and Communication for Electric Vehicles IEEE Industry Applications Magazine Nov./Dec. 1995.

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