Method of estimating state of charge and open circuit...

Details Method of estimating state of charge and open circuit... Method of estimating state of charge and open circuit...

2005-02-01

2005-02-01

Tibbits, Pia (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C324S429000

Reexamination Certificate

active

06850038

ABSTRACT:
A method of estimating a state of charge of a battery, a method of estimating an open circuit voltage of a battery, and a method and device for computing a degradation degree of a battery are provided. As a degradation degree, a ratio of a total electrical quantity chargeable or dischargeable of a battery at any time point to an initial electrical quantity that is a total electrical quantity chargeable or dischargeable of the battery upon non-degradation is computed, and by using the degradation degree, a state of charge or an open circuit voltage of the battery is accurately estimated.

REFERENCES:
patent: 6788068 (2004-09-01), Arai

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