Technique for avoiding overcharging a battery

Details Technique for avoiding overcharging a battery Technique for avoiding overcharging a battery

1997-06-09

1999-04-27

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With peak detection of current or voltage

320161, H01M 1044, H01M 1046

Patent

active

058982957

ABSTRACT:
By monitoring both charge current and the battery voltage (306, 308) the likelihood of overcharging a battery is reduced. Battery voltage is compared to a predetermined limit (310) and the battery goes into trickle charge if the predetermined limit is exceeded (312), but now by also determining if a positive delta in charge current has occurred (314), the charger can trickle charge the battery (312) even if the cutoff voltage is never exceeded.

REFERENCES:
patent: 3667026 (1972-05-01), Bogut et al.
patent: 4225815 (1980-09-01), Lind et al.
patent: 4371826 (1983-02-01), Shelly
patent: 4629965 (1986-12-01), Fallon et al.
patent: 5185566 (1993-02-01), Goedken et al.

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