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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.:

US 10461545 B1

PDFFull Text
Date of Patent:
Oct. 29, 2019

Filed:

Jun. 15, 2015

Battery system

Applicant:

Hitachi Chemical Company, Ltd., Chiyoda-ku, Tokyo, JP;

Inventors:

Takeshi Inoue, Tokyo, JP;

Keizo Yamada, Tokyo, JP;

Tetsuya Matsumoto, Tokyo, JP;

Assignee:

Hitachi Chemical Company, Ltd., Tokyo, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Edward Tso

Assistant Examiner:

Aaron Piggush

Int. Cl.
CPC ...
H02J 7/00 (2006.01); H02J 5/00 (2016.01); H02J 7/02 (2016.01); H02J 7/04 (2006.01); H02J 7/34 (2006.01); B60R 16/033 (2006.01); H02P 1/00 (2006.01); H02P 9/00 (2006.01); H02J 7/14 (2006.01); B60L 50/40 (2019.01); B60L 53/60 (2019.01); B60L 58/12 (2019.01); B60L 58/20 (2019.01);
U.S. Cl.
CPC ...
H02J 7/0014 (2013.01); B60L 50/40 (2019.02); B60L 53/60 (2019.02); B60L 58/12 (2019.02); B60L 58/20 (2019.02); B60R 16/033 (2013.01); H02J 5/00 (2013.01); H02J 7/00 (2013.01); H02J 7/007 (2013.01); H02J 7/0068 (2013.01); H02J 7/02 (2013.01); H02J 7/04 (2013.01); H02J 7/1423 (2013.01); H02J 7/34 (2013.01); H02P 1/00 (2013.01); H02P 9/008 (2013.01); B60L 2240/545 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01); B60Y 2300/91 (2013.01); B60Y 2400/112 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7022 (2013.01); Y02T 10/7044 (2013.01); Y02T 10/7066 (2013.01); Y02T 10/7072 (2013.01); Y02T 90/121 (2013.01); Y02T 90/128 (2013.01); Y02T 90/14 (2013.01); Y02T 90/163 (2013.01);
Abstract

In a battery system that connects a plurality of types of batteries through a switch SW, when the switch SW is switched at a voltage (charge rate), it has been possible to increase a stored charge during charging, depending on the DC resistance of the battery. An object of the present invention is to provide switch SW switching control so that the stored charge can further be increased. A first feature of the present invention is to provide a battery system in which a first battery and a second battery are connected in parallel through the switch SW, including an estimator which estimates the charging current by measuring the resistance and OCV of each battery. The battery system can further increase the stored charge by switching to a switch SW combination that can increase the stored charge.

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