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:
Sep. 22, 2009
Filed:
Oct. 28, 2005
Kazuhiko Funabashi, Ibaraki, JP;
Nobuhiro Takano, Ibaraki, JP;
Kenro Ishimaru, Ibaraki, JP;
Takao Aradachi, Ibaraki, JP;
Kazuhiko Funabashi, Ibaraki, JP;
Nobuhiro Takano, Ibaraki, JP;
Kenro Ishimaru, Ibaraki, JP;
Takao Aradachi, Ibaraki, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A battery charging apparatus includes a switching power source supplying a current to a battery pack, an input voltage detecting unit detecting an input voltage of the switching power source, a charging current control unit that detects a charging current of the battery and controlling the charging current in accordance with a charging current set value, and a microcomputer detecting whether the current supplied to the battery to be charged is less than a predetermined value on the basis of a detection signal of the input voltage detecting unit and controls the charging current set value in accordance with the input voltage. When it is discriminated that the input voltage is less than a predetermined value on the basis of the detection signal, the microcomputer sets the charging current set value to be a value less than the predetermined value.