Pulse charging method for rechargeable batteries

Details Pulse charging method for rechargeable batteries Pulse charging method for rechargeable batteries

1997-02-12

1998-09-15

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell charging

Pulsed

320155, 320162, H02J 704

Patent

active

058084479

ABSTRACT:
This charging method repeatedly charges and suspends charging to pulse charge a rechargeable battery. Open circuit battery voltage is measured during periods of suspended charging and charging is resumed when the measured voltage drops below a specified voltage. When the period of suspended charging is longer than a specified time, open circuit battery voltage is compared to a minimum voltage. When the open circuit battery voltage is greater than the minimum voltage and the period of suspended charging is longer than the specified time, the battery is considered fully charged. When the open circuit battery voltage is less than the minimum voltage, even though the period of suspended charging is longer than the specified time, the battery is assumed to be removed from the system.

REFERENCES:
patent: 4056764 (1977-11-01), Endo et al.
patent: 4736150 (1988-04-01), Wagner
patent: 5291117 (1994-03-01), Rydborn
patent: 5442274 (1995-08-01), Tamai et al.
patent: 5606240 (1997-02-01), Kokuga et al.
patent: 5684386 (1997-11-01), Okada

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