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. 20, 2007
Filed:
Jul. 22, 2004
Yoshikazu Izumi, Tokushima, JP;
Yasushi Kuroda, Itano-Gun, JP;
Akio Furukawa, Itano-Gun, JP;
Takahiro Yamashita, Sumoto, JP;
Yoshikazu Izumi, Tokushima, JP;
Yasushi Kuroda, Itano-Gun, JP;
Akio Furukawa, Itano-Gun, JP;
Takahiro Yamashita, Sumoto, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
The battery charging detects battery temperature and includes a temperature maintaining charging operation wherein average charging current is controlled to drive battery temperature to a holding temperature, and charging is performed while maintaining battery temperature at that holding temperature. In addition, a temperature increasing charging operation occurs prior to the temperature maintaining charging operation. The battery is charged with a current which raises battery temperature until the holding temperature is reached. When battery temperature rises to the holding temperature in the temperature increasing charging operation, charging can transition to the temperature maintaining charging operation.