Accumulator

Details Accumulator Accumulator

2007-09-05

2011-11-22

Assouad, Patrick (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With peak detection of current or voltage

C320S134000, C320S136000, C320S166000, C307S103000, C307S109000, C307S110000, C363S059000, C363S060000

Reexamination Certificate

active

08063611

ABSTRACT:
A DC blocking capacitor and a resistor are coupled in series, and coupled in parallel with an electricity storing section. An ON/OFF circuit and a peak voltage holding circuit are coupled in parallel with the resistor. A current sensing section is coupled in series with the storing section, with its output supplied to the peak current holding circuit. Current from a positive to a negative electrode of the storing section is referred to as a positive direction. The ON/OFF circuit is turned on when the current flows in a negative direction, and is turned off when the current flows in the positive direction. An internal resistor of the storing section is found based on a peak voltage and a peak current resulting from the control and held by the respective circuits. A degree of degradation of the electricity storing section is determined with this internal resistor.

REFERENCES:
patent: 4667143 (1987-05-01), Cooper et al.
patent: 5177677 (1993-01-01), Nakata et al.
patent: 5345163 (1994-09-01), Gibbons et al.
patent: 5821735 (1998-10-01), Scharff
patent: 7821800 (2010-10-01), Chiang
patent: 2003/0057920 (2003-03-01), Dotzler
patent: 2000-13910 (2000-01-01), None
patent: 2002-252901 (2002-09-01), None
patent: 2004-134129 (2004-04-01), None
patent: 2005-28908 (2005-02-01), None
International Search Report for PCT/JP2007/067253, Dec. 18, 2007.

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