Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1996-04-04
1997-05-20
Tso, Edward
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 29, 320 30, 320 31, H01M 1044, H01M 1046
Patent
active
056315384
ABSTRACT:
A unique method and apparatus for charging a battery enables the safe and efficient charging of a battery (102) which may be removed during charging. An electronic device (106) may not be adapted to be powered by the external power supply (114) without a detachable battery, or more importantly, the internal circuitry (200) may be damaged when the detachable battery is removed while the power supply is attached. Also, a battery may not be properly charged if a battery is replaced in the middle of a charging program for the battery. By periodically interrupting (306) the charging current, a device may turn itself off before circuitry or components are damaged if a battery is removed, and reset the charging program to correctly charge a battery if the battery is replaced.
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patent: 4659994 (1987-04-01), Poljak
patent: 4755733 (1988-07-01), Laliberte
patent: 4992720 (1991-02-01), Hata
patent: 5185566 (1993-02-01), Goedken et al.
patent: 5237257 (1993-08-01), Johnson et al.
patent: 5471128 (1995-11-01), Patino et al.
patent: 5539299 (1996-07-01), Fernandez et al.
King John J.
Motorola Inc.
Tso Edward
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