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:
Jul. 07, 2015

Filed:

Apr. 25, 2012
Applicants:

Shinichi Arakawa, Wako, JP;

Yasumichi Ohnuki, Wako, JP;

Inventors:

Shinichi Arakawa, Wako, JP;

Yasumichi Ohnuki, Wako, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); H01M 10/42 (2006.01); H01M 10/46 (2006.01); H01M 10/48 (2006.01); H01M 2/34 (2006.01); G01R 31/36 (2006.01);
U.S. Cl.
CPC ...
H02J 7/0016 (2013.01); H02J 7/0031 (2013.01); H01M 2/34 (2013.01); H01M 10/4207 (2013.01); H01M 10/425 (2013.01); H01M 10/46 (2013.01); H01M 10/482 (2013.01); H01M 2010/4271 (2013.01); G01R 31/3658 (2013.01);
Abstract

A power supply device includes a plurality of power supply units connected in parallel, and includes a positive electrode-side junction formed by the joining of positive electrode-side terminals of the plurality of power supply units and a negative electrode-side junction formed by the joining of negative electrode-side terminals of the plurality of power supply units. Each of the plurality of power supply units includes a battery unit, and a first relay that is provided between one of the positive and negative electrode-side junctions and the battery unit and is electrically disconnectably connected in series to the battery unit. Each of the plurality of power supply units includes a resistive element of which one end is connected between the first relay, which is connected to one of a positive electrode terminal and a negative electrode terminal of the battery unit, and the battery unit.


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