Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – For battery pack
Reexamination Certificate
2007-07-17
2007-07-17
Tibbits, Pia (Department: 2838)
Electricity: battery or capacitor charging or discharging
Cell or battery charger structure
For battery pack
Reexamination Certificate
active
10434940
ABSTRACT:
A charging and discharging strategy for a rechargeable battery pack is disclosed. The strategy involves monitoring and learning the battery pack's condition (a cycle life parameter) in terms of its progression through its life cycle. The life cycle parameter may be determined as a function of both time (i.e., the battery pack's age) as well as the number of discharge/recharge cycles. The strategy intentionally under-utilizes the battery during the initial stages of its life, based on the cycle life parameter, by charging it to a first level less then the maximum state of charge. This approach reduces charge voltages, reducing stress on the battery's active materials, thereby increasing its life.
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Hanauer Brad T.
Moore Stephen W.
Schneider Peter J.
Enerdel, Inc.
Howard & Howard Attorneys P.C.
Tibbits Pia
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