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:
Sep. 25, 2018
Filed:
Aug. 30, 2016
Applicant:
A123 Systems, Llc, Waltham, MA (US);
Inventors:
Brian C. Moorhead, Willis, MI (US);
Brian D. Rutkowski, Ypsilanti, MI (US);
Assignee:
A123 Systems, LLC, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); H01M 10/44 (2006.01);
U.S. Cl.
CPC ...
H02J 7/0016 (2013.01); H01M 10/441 (2013.01); H02J 7/00 (2013.01); H02J 7/0021 (2013.01); H02J 7/007 (2013.01); H02J 7/0013 (2013.01); H02J 7/0014 (2013.01);
Abstract
Systems and methods for balancing battery cells of a battery pack are disclosed. In one example, a charge imbalance is determined while battery cells operate in a high charge resolution voltage range. The charge imbalance determined during operation in the high charge resolution voltage range may be removed when the battery cells are operated in a low charge resolution voltage range. The system and method may be particularly useful for balancing battery cells that operate in the low charge resolution voltage range for a large portion of their operating time.