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 9267998 B1

Expired

Date of Patent:

Feb. 23, 2016

Filed:

Dec. 24, 2012

Protective circuit for a rechargeable battery pack

Applicant:

Andreas Stihl Ag & Co. KG, Waiblingen, DE;

Inventors:

Henrik Gaul, Schorndorf, DE;

Martin Schurr, Mutlangen, DE;

Assignee:

Andreas Stihl AG & Co. KG, Waiblingen, DE;

Attorney:

Walter Ottesen P.A.

Primary Examiner:

Danny Nguyen

Int. Cl.

CPC ...

H01H 31/10 (2006.01); G01R 31/36 (2006.01); H01H 47/00 (2006.01); G01R 31/40 (2014.01); H01M 10/44 (2006.01); H02J 7/00 (2006.01); H02H 7/18 (2006.01); G01R 19/165 (2006.01); H01M 2/20 (2006.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01);

U.S. Cl.

CPC ...

G01R 31/3627 (2013.01); G01R 31/40 (2013.01); H01H 47/002 (2013.01); H01M 10/441 (2013.01); G01R 19/16542 (2013.01); G01R 31/3658 (2013.01); H01M 2/202 (2013.01); H01M 10/425 (2013.01); H01M 10/482 (2013.01); H01M 2010/4271 (2013.01); H02H 7/18 (2013.01); H02J 7/0026 (2013.01); H02J 2007/0039 (2013.01); Y10T 307/76 (2015.04);

Abstract

A protective circuit for an arrangement which includes a plurality of individual cells in a rechargeable battery pack with a predefined number of individual cells being connected in series in a cell row and at least two cell rows being situated parallel to one another. The component current flowing in a first cell row when the rechargeable battery pack is subject to loading is compared with the component current flowing in a second cell row to generate a signal when there is an implausible deviation in the component currents with respect to one smother. The signal is used to disconnect a defective cell row or to switch off the entire rechargeable battery pack in order to protect the latter.

Find Patent Forward Citations

Gaul, Henrik. (2016). Protective circuit for a rechargeable battery pack (U.S. Patent No. 9267998). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9267998

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile