Method for determining the amount of charge which can still...

Details Method for determining the amount of charge which can still... Method for determining the amount of charge which can still...

2005-03-01

2005-03-01

Tibbits, Pia (Department: 2838)

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

Reexamination Certificate

active

06861842

ABSTRACT:
A method for determining the amount of charge which can still be drawn from an energy storage battery includes measuring current values and voltage values at at least two times in a voltage response of the energy storage battery to at least one current pulse, with one voltage/current value pair being obtained for each of the at least two times. The method also includes calculating a resistance difference characteristic variable utilizing the measured voltage/current value pairs. The method also includes determining of the amount of charge which can still be drawn from the energy storage battery utilizing the resistance difference characteristic variable. An energy storage battery having measurement means and processor-controlled evaluation means may be provided for carrying out the method.

REFERENCES:
patent: 5140269 (1992-08-01), Champlin
patent: 5485090 (1996-01-01), Stephens
patent: 5572136 (1996-11-01), Champlin
patent: 5680050 (1997-10-01), Kawai et al.
patent: 5721688 (1998-02-01), Bramwell
patent: 5898292 (1999-04-01), Takemoto et al.
patent: 69131276 (1992-03-01), None
patent: 9321638 (2001-08-01), None
patent: 0432689 (1991-06-01), None

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