The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 2009
Filed:
Jun. 28, 2007
Toshiyuki Satoh, Tokyo, JP;
Atsushi Kimura, Tokyo, JP;
Fumikazu Iwahana, Tokyo, JP;
Tetsuya Kanou, Tokyo, JP;
Katsumi Inaniwa, Tokyo, JP;
Toshiyuki Satoh, Tokyo, JP;
Atsushi Kimura, Tokyo, JP;
Fumikazu Iwahana, Tokyo, JP;
Tetsuya Kanou, Tokyo, JP;
Katsumi Inaniwa, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
A method for determining the deterioration of an accumulator battery, hooked up with loads in a system, based on the result of measuring internal resistances of an accumulator battery, the method including predetermining a temperature at which the deterioration of the accumulator battery is determined, calculating temperature correction coefficients, predetermining resistance-voltage conversion factors, measuring the internal resistances and temperature of the accumulator battery, converting the measured internal resistance values into the internal resistance values, converting the internal resistance values at the specified temperature into the terminal discharge voltage values and determining whether the accumulator battery is deteriorated or not by means of comparison of the terminal discharge voltage values.