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.

Date of Patent:
May. 08, 2012

Filed:

Jul. 07, 2006
Applicants:

Shinichiro Kosugi, Kanagawa, JP;

Nobuo Shibuya, Kanagawa, JP;

Inventors:

Shinichiro Kosugi, Kanagawa, JP;

Nobuo Shibuya, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

In a battery system, battery modules () connected to each other in series respectively include: one or more single cells (toto-) connected to one another in any one of series, parallel, and series-parallel; cell voltage switches () for detecting voltages respectively of the one or more single cells; module monitoring control units () each for monitoring the detected voltages respectively of the one or more signal cells; and communications level converter circuits (). The battery system includes a master unit () for receiving information on the voltages respectively of the one or more single cells from the module monitoring control units via the communications level converter circuits. One of the communications level converter circuits includes a switch element (Q) for transmitting a signal of a low-potential battery module to a high-potential battery module. A series circuit includes resistors R, Rand Ras well as the switch element is connected between a positive electrode of the highest-potential single cell in the high potential battery module and a negative electrode of the lowest-potential single cell in the low-potential battery cell.


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