Electricity: battery or capacitor charging or discharging – Battery or cell discharging – With charging
Reexamination Certificate
2011-04-12
2011-04-12
Tso, Edward (Department: 2858)
Electricity: battery or capacitor charging or discharging
Battery or cell discharging
With charging
C320S116000, C320S136000, C320S148000, C320S162000
Reexamination Certificate
active
07923967
ABSTRACT:
A method controls a battery pack that includes a rechargeable battery, a control circuit that controls charge operation of the battery, and a charge control element that controls the charge current through the control circuit. In the method, even though the control circuit controls the charge control element so that the charge control element turns to OFF, in a case where the charge current is detected, the control circuit determines that abnormality occurs if detecting that the current flows at a rate not less than a first current value during a first detection period, and additionally determines that abnormality occurs if detecting a state the current flows at a rate less than the first current value for a second detection period longer than the first detection period.
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Japanese Office Action issued Mar. 30, 2010 in Application No. 2006-031684.
Hamaguchi Hitoshi
Nishikawa Toru
Ruiz Johali A Torres
Sanyo Electric Co,. Ltd.
Tso Edward
Wenderoth , Lind & Ponack, L.L.P.
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