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:
Mar. 26, 2013
Filed:
Jul. 28, 2009
Mitsuo Saeki, Kawasaki, JP;
Kouichi Matsuda, Kawasaki, JP;
Akira Takeuchi, Kawasaki, JP;
Hidetoshi Yano, Kawasaki, JP;
Mitsuo Saeki, Kawasaki, JP;
Kouichi Matsuda, Kawasaki, JP;
Akira Takeuchi, Kawasaki, JP;
Hidetoshi Yano, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A battery unit includes: a battery having cell units connected in parallel, in which one or a plurality of battery cells is connected in series; an external terminal provided for the battery; a switching element provided between each internal terminal and the external terminal of the cell unit; a protection circuit monitoring whether or not a fault occurs in each of the plurality of cell units and cutting off, through the switching element, a connection between the internal terminal and the external terminal of the cell unit with the fault detected; and an informing signal output terminal notifying an external device that the connection with the external terminal with respect to at least one of the cell units is cut off.