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:
May. 13, 2008
Filed:
Nov. 10, 2004
Kimiyoshi Kobayashi, Hanno, JP;
Kimiyoshi Kobayashi, Hanno, JP;
Shindengen Electric Manufacturing Co., Ltd, Tokyo, JP;
Abstract
A novel charger wherein a constant electric power control is made such that an electric power feed at the output end is the same as the electric power fed by a fuel cell at the input end, thereby keeping a cell charge current constant, reducing the number of components and further realizing a stable charging. A charger, an input source (Vfc) of which is a fuel cell or solar cell exhibiting a relatively large output impedance during electric power feed, includes a secondary cell (B) at the output end. A current control circuit (), which is connected to the secondary cell, supplies a charging current to be caused to flow into the secondary cell. The value of the charging current is obtained from a control amount necessary for maintaining a converter output voltage at a drooping voltage as set.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile