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. 22, 2012
Filed:
Feb. 14, 2008
Takahisa Otsu, Osaka, JP;
Yoshikazu Kiyohara, Osaka, JP;
Takahisa Otsu, Osaka, JP;
Yoshikazu Kiyohara, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
After the initial current set processing is performed, by which a feed amount of a charge current Ic by a charge current feed portionis set to a first current value Iexceeding a reference current value Ie preset as a current value of the charge current at which the charge current is flown without causing substantially any deterioration in secondary batteries, andwhile negative electrode potential of the secondary batteries, andhas dropped to substantially 0 V, the charge current is changed in such a manner that the current value keeps decreasing with an increase of a terminal voltage Vt detected by a voltage detection portionuntil the terminal voltage Vt detected by the voltage detection portionreaches an end voltage Vf, which is the terminal voltage across a set batterywhen the negative electrode potentials of the secondary batteries, andhave dropped to substantially 0 V.
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