Electricity: battery or capacitor charging or discharging – Battery or cell discharging – With charging
Reexamination Certificate
2006-09-19
2006-09-19
Tibbits, Pia (Department: 2838)
Electricity: battery or capacitor charging or discharging
Battery or cell discharging
With charging
Reexamination Certificate
active
07109684
ABSTRACT:
An equipment and method for charging a secondary battery are provided to quickly and surely charge a secondary battery (secondary batteries) while preventing the secondary battery (batteries) from overcharging or insufficient charging. Special charging voltage Esis applied to a secondary battery for a predetermined time, and then the applied voltage is switched to equilibrium voltage Eeqfor establishing equilibrium cell potential of the secondary battery in its fully charged condition, wherein the special charging value Esis larger than the equilibrium value Eeq. Electric current i is detected while application of the equilibrium voltage Eeq. If the detected electric current i is larger than standard electric current J for finishing charging, the above detection and charging are repeated; otherwise, charge of the secondary battery1is halted.
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Iuchi Yutaka
Matsui Shigetomo
Nakamura Osamu
Nishino Taneo
Takaoka Hiromi
Knobbe Martens Olson & Bear LLP
Techno Core International Co., Ltd.
The New Industry Research Organization
Tibbits Pia
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