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:
May. 13, 2003
Filed:
May. 23, 2001
Soichiro Kawakami, Nara, JP;
Yasusaburo Degura, Souraku-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A detecting method for detecting an internal state of an inspective rechargeable battery (B ), said internal state including a deterioration state, an electricity storable capacity, a remaining capacity, and an internal resistance of said inspective rechargeable battery (B ), comprising: (1) a step in which basic data (BD) of characteristics of a normal non-deteriorated rechargeable battery (B ) as a reference rechargeable battery for said inspective rechargeable battery (B ) are provided; and (2) a step in which for said inspective rechargeable battery (B ), a voltage value or/and a current value thereof are measured, and the measured result is compared with said basic data (BD) obtained in said step (1) to judge whether or not said inspective rechargeable battery (B ) is of a deterioration mode and to detect the internal state thereof.