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. 30, 2014
Filed:
Feb. 13, 2012
Shigeki Yagi, Chiba, JP;
Hirokazu Serita, Chiba, JP;
Mitsuharu Chiba, Chiba, JP;
Hiroyuki Konishi, Chiba, JP;
Akiko Asahata, Chiba, JP;
Yasuyuki Kanai, Tokyo, JP;
Takayuki Kanai, Tokyo, JP;
Naoji Nomura, Tokyo, JP;
Shigeki Yagi, Chiba, JP;
Hirokazu Serita, Chiba, JP;
Mitsuharu Chiba, Chiba, JP;
Hiroyuki Konishi, Chiba, JP;
Akiko Asahata, Chiba, JP;
Yasuyuki Kanai, Tokyo, JP;
Takayuki Kanai, Tokyo, JP;
Naoji Nomura, Tokyo, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A secondary battery charging system includes a secondary battery charging device and a power generation device that generates a charging current. The secondary battery charging device controls the charging a secondary battery, which has a protection timer that counts a first elapsed time from a start of charging. The secondary battery charging device includes a charging switch that controls a supply of the charging current, a time management timer portion that counts a second elapsed time starting from a point at which the charging switch becomes conductive and performs a charging stop determination and that counts a third elapsed time starting from a point at which the charging switch is cut off and performs a charging start determination, and a charging control portion that causes the charging switch to be conductive or cut off based on results of the charging stop determination and the charging start determination.