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:
Dec. 25, 2012
Filed:
May. 22, 2008
Isao Hayashi, Yokohama, JP;
Isao Hayashi, Yokohama, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
A charging device capable of appropriately grasping the charged state of a battery pack using data stored in a memory of the battery pack even when the battery pack becomes commercial as a new product. A charging device determines charged state data indicative of a charged state of a battery pack mounted thereon based on a charging current supplied and/or a charging voltage applied to the battery pack. A charge control microcomputer reads charging characteristics data from a memory of the battery pack, and generates a data table associating at least one of the charging current supplied and the charging voltage applied to the battery pack and the charged state data with each other, based on the charging characteristics data read out. The microcomputer determines charged state data indicative of a charged state of the battery pack, based on the generated data table.