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:
Aug. 21, 2001
Filed:
May. 14, 1999
Applicant:
Inventors:
Hideaki Horie, Yokosuka, JP;
Toyoaki Nakagawa, Chigasaki, JP;
Mikio Kawai, Yokosuka, JP;
Yuji Tanjo, Yokohama, JP;
Takaaki Abe, Yokosuka, JP;
Ken Iwai, Yokosuka, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/7416 ;
U.S. Cl.
CPC ...
G01N 2/7416 ;
Abstract
A cell which has become inactive is detected in a multi-cell battery (,) comprising plural cells (C,). An inactivity detecting circuit comprising a signal generator (D,) and a diode (D,) connected in series, is connected in parallel with the cell (C,) When the cell becomes inactive, the signal generator (D,) emits a signal to indicate the state of the cell. Hence, it is possible to economically detect loss of cell activity.