Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – Having variable number of cells or batteries in series
Reexamination Certificate
2011-01-04
2011-01-04
Tso, Edward (Department: 2858)
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
Having variable number of cells or batteries in series
C320S116000, C320S118000, C320S119000, C320S132000
Reexamination Certificate
active
07863863
ABSTRACT:
A multi-cell battery pack charge balance circuit is connected to a recharge-discharge circuit to charge battery cells. The charge balance circuit includes a first balance circuit, a second balance circuit and a protection circuit. The first balance circuit is connected to a first node of the recharge-discharge circuit. The first balance circuit includes a plurality of controlling units, each of the controlling units includes a switch element and a resistor element connected with the switch element. The second balance circuit is connected to a second node of the recharge-discharge circuit and the first balance circuit. The second balance circuit has a first and second branch. The first branch includes a switch element. The second branch includes a switch element and a resistor element connected with each other. The protection circuit has a plurality of controlling points. The controlling points connect with the corresponding switch elements of the first and second balance circuits.
REFERENCES:
patent: 5998967 (1999-12-01), Umeki et al.
Chan Chia-Han
Chang Nan-Sheng
Cheng Uei Precision Industry Co. Ltd.
King Anthony
Omar Ahmed
Tso Edward
WPAT, P.C.
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