Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With individual charging of plural batteries or cells
Reexamination Certificate
2005-01-04
2005-01-04
Vu, Bao Q. (Department: 2838)
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With individual charging of plural batteries or cells
C320S121000
Reexamination Certificate
active
06838856
ABSTRACT:
A battery charger includes line-level input rectification, a high-frequency oscillator-controlled chopper circuit, multiple transformers operating in parallel, and controlled output rectification. Use of line-level input rectification reorders the elements of the battery charger compared to previous designs. A chopper frequency several orders of magnitude higher than that of the AC power mains is used. The use of multiple, parallel-wired transformers for voltage and current transformation eases constraints on the physical geometry of a manufactured battery charger product by permitting individual transformers, each smaller than a comparable single transformer, to be employed. Controlled output rectifiers permit power levels to be regulated dynamically.
REFERENCES:
patent: 4374355 (1983-02-01), Steigerwald et al.
patent: 5111373 (1992-05-01), Higaki
patent: 5289101 (1994-02-01), Furuta et al.
patent: 5726551 (1998-03-01), Miyazaki et al.
patent: 6175511 (2001-01-01), Ooba
patent: 6276616 (2001-08-01), Jenkins
Baker & Hostetler LLP
SPX Corporation
Vu Bao Q.
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