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:
Oct. 07, 2014
Filed:
Apr. 27, 2011
Yutaka Horie, Mitaka, JP;
Yutaka Horie, Mitaka, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a charging method of a charging apparatus includes a protector for stopping charging of a battery when a first voltage value of the battery exceeds a threshold value, the method includes, measuring a second voltage value of the battery, before the battery is charged, calculating an impedance value of the battery, before the battery is charged, calculating, based on the second voltage value, the impedance value, and the threshold value, an overvoltage protection current value when charging of the battery is stopped by the protector, supplying charging power having the first charging current value based on a maximum allowable current value which is set for the battery when the charging is not stopped by the protector, and supplying charging power having a second charging current value based on the overvoltage protection current value when the charging is stopped by the protector.