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. 09, 2014
Filed:
Jun. 03, 2010
Tsuyoshi Morita, Zama, JP;
Kouhei Kasedou, Zama, JP;
Noriko Hoshino, Isehara, JP;
Ayuka Kawata, Ebina, JP;
Atsushi Kawase, Sagamihara, JP;
Tsuyoshi Morita, Zama, JP;
Kouhei Kasedou, Zama, JP;
Noriko Hoshino, Isehara, JP;
Ayuka Kawata, Ebina, JP;
Atsushi Kawase, Sagamihara, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A battery chargerequipped with an AC/DC converter charges a secondary battery moduleconstituted with a plurality of unit cells. The unit cellsare each connected in parallel with a constant voltage circuitconstituted with a Zener diodeand a resistorconnected in series, and the unit cellachieving a state of full charge is detected based upon the difference between the potentials at the two sides of the resistor. As a battery controllerlowers the charging power used by the battery chargerin response to the full charge state being achieved, it is ensured that the secondary battery moduleis charged thoroughly while preventing individual unit cellsfrom becoming overcharged.