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:
Jun. 26, 2001
Filed:
Mar. 16, 1999
Applicant:
Inventors:
Hideji Nakamura, Kyoto, JP;
Kiyoshi Ueda, Kyoto, JP;
Assignee:
Japan Storage Battery Co., Ltd., Kyoto, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/00 ; G01N 2/7416 ;
U.S. Cl.
CPC ...
H02J 7/00 ; G01N 2/7416 ;
Abstract
A plurality of battery modules are provided for each module monitoring unit. When a battery module is normal, a photo-FET of a photocoupler contained in a module monitoring unit,associated with the battery module is turned on. When it is abnormal, the photo-FET is turned off. Those photo-FETs, provided in association with the battery modules, are connected in series by two signal lines. A management unit detects whether the circuit including those signal lines is opened or closed, and finds an abnormal battery module on the basis of the detection.