Electric energy storage device

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

Reexamination Certificate

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Details

C320S126000, C320S167000

Reexamination Certificate

active

08030901

ABSTRACT:
Provided is an electric energy storage device capable of improving a charging efficiency when electric power supplied with an input current having a current value repeatedly exhibiting peaks and valleys is to be storaged by using a secondary battery and an electric double-layer capacitor. The electric energy storage device includes: an electric double-layer capacitor; and a battery unit including at least one secondary battery, the battery unit being connected in parallel to the electric double-layer capacitor, in which: a ratio of an internal resistance of the electric double-layer capacitor to an internal resistance of the battery unit is determined according to parameters relating to the input current.

REFERENCES:
patent: 6998822 (2006-02-01), Turner et al.
patent: 7417407 (2008-08-01), Stuart et al.
patent: 7667438 (2010-02-01), Ashtiani et al.
patent: A-2000-78768 (2000-03-01), None
patent: A-2002-246071 (2002-08-01), None
patent: A-2004-173345 (2004-06-01), None
patent: A-2006-210244 (2006-08-01), None
Translation of International Preliminary Report on Patentability received Dec. 20, 2010 issued in International Patent Application No. PCT/JP2009/057608.
International Search Report mailed Jul. 14, 2009 issued in International Patent Application No. PCT/JP2009/057608 (with translation).

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