Apparatus and method for detecting internal impedance of a...

Details Apparatus and method for detecting internal impedance of a... Apparatus and method for detecting internal impedance of a...

2005-06-23

2009-12-15

Tso, Edward (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

Reexamination Certificate

active

07633297

ABSTRACT:
An internal impedance detecting apparatus for detecting the internal impedance of a secondary battery with high accuracy is provided. Processor106divides the variation of each voltage detected by voltage change detector103by the variation of the current detected by current change detector105for the same detecting time as that for the voltage variations to compute the internal impedances. Judging unit107checks the variations of the internal impedances computed by processor106and judges from the check result whether or not the internal impedances have reliability. Only when judging unit107judges that the internal impedances have reliability, generator109generates output internal impedance according to the internal impedances.

REFERENCES:
patent: 6167349 (2000-12-01), Alvarez
patent: 7103460 (2006-09-01), Breed
patent: 10-214643 (1998-08-01), None
patent: 2000-121710 (2000-04-01), None
patent: 2000-338201 (2000-12-01), None
patent: 2001-013229 (2001-01-01), None
patent: 10-0497572 (2005-07-01), None

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