Apparatus for estimating state of charge of rechargeable...

Electricity: battery or capacitor charging or discharging – Battery or cell discharging – With charging

Reexamination Certificate

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Reexamination Certificate

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08040108

ABSTRACT:
The apparatus, which is for estimating a state of charge of a rechargeable battery charged by a vehicle-mounted power generation apparatus capable of generating a variable output voltage, includes a first function of quantifying charging/discharging history of the rechargeable battery, and a second function of performing estimation of a state of charge of the rechargeable battery on the basis of a parameter which indicates a charging/discharging current of the rechargeable battery when variation of the output voltage of the vehicle-mounted power generation apparatus is below a predetermined value, and the quantified charging/discharging history, while eliminating an effect which polarization of the rechargeable battery due to the charging/discharging history has on the charging/discharging current before the variation of the output voltage becomes below the predetermined value.

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Japanese Office Action dated Mar. 6, 2009, issued in corresponding Japanese Application No. 2007-201211, with English translation.
Office Action (4 pgs.) dated Mar. 6, 2009 issued in corresponding Japanese Application No. 2007-201211 with an at least partial English-language translation thereof (4 pgs.).

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