Charging circuit for a vehicle charger

Details Charging circuit for a vehicle charger Charging circuit for a vehicle charger

2007-10-25

2010-06-08

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

Vehicle battery charging

C320S112000, C320S114000

Reexamination Certificate

active

07733053

ABSTRACT:
A charging circuit for a vehicle charger includes a front high-voltage protective circuit, a rear high-voltage protective circuit, a first filtering circuit, an over-voltage protective circuit, a high frequency step-down switching regulator, a second filtering circuit, a frequency modulation circuit, a reference voltage input circuit, a sampling circuit, a short-circuit protective circuit and two charging interfaces. The front high-voltage protective circuit connects to a vehicle DC power, the first filtering circuit connects the front high-voltage protective circuit to the switching regulator, the second filtering circuit connects to an output point of the switching regulator to the rear high-voltage protection circuit, the frequency modulation circuit connects to a second input point of the switching regulator, the third input point of the switching regulator connects to the reference voltage input circuit, the short-circuit protective circuit connects the second filtering circuit to the fourth input point of the switching regulator, the sampling circuit connects the second filtering circuit to the fifth input point of the switching regulator, the rear high-voltage protection circuit connects to the two charging interfaces. For the unique design, the charging circuit for a vehicle charger has a short-circuit protective function and provides two charging interfaces.

REFERENCES:
patent: 5448152 (1995-09-01), Albright
patent: 5637978 (1997-06-01), Kellett et al.
patent: 5717310 (1998-02-01), Sakai et al.
patent: 5783872 (1998-07-01), Blair
patent: 6060861 (2000-05-01), Feng
patent: 2004/0189251 (2004-09-01), Kutkut et al.

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