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:
Feb. 28, 2012
Filed:
Aug. 22, 2008
Mitsuhiro Takeno, Osaka, JP;
Mitsuhiro Takeno, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A method for charging a non-aqueous electrolyte secondary battery including the step of repeating pulse charging and charging pause, in which a pulse charging time is arbitrarily set between a lower limit value and an upper limit value, the lower limit value being an inverse time Tx of a frequency Fx of the high frequency side at which an imaginary part of an alternating current impedance of the non-aqueous electrolyte secondary battery is a first local maximum value, or of a frequency adjacent to Fx, and the upper limit value being an inverse time Ty of a frequency Fy at the low frequency side at which an imaginary part of the alternating current impedance of the non-aqueous electrolyte secondary battery is a second local maximum value, or of a frequency adjacent to Fy.