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:
Mar. 15, 2022
Filed:
Feb. 08, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); H02J 7/02 (2016.01); G01R 31/396 (2019.01); G01R 31/3835 (2019.01); B60L 58/22 (2019.01); H01M 10/48 (2006.01); H01M 10/42 (2006.01);
U.S. Cl.
CPC ...
H02J 7/0016 (2013.01); B60L 58/22 (2019.02); G01R 31/3835 (2019.01); G01R 31/396 (2019.01); H01M 10/425 (2013.01); H01M 10/482 (2013.01); H02J 7/0047 (2013.01); H02J 7/02 (2013.01); B60L 2240/547 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01);
Abstract
A voltage detector detects a voltage of each cell of a plurality of cells that are series-connected. A plurality of discharge circuits are respectively parallel-connected to the plurality of cells. A controller performs a control to equalize voltages or capacities of the plurality of cells to a target value by controlling discharge time of the plurality of discharge circuits, based on the voltages of the plurality of cells detected by the voltage detector. The controller sets the target value higher as an amount of change in the voltages of the plurality of cells in a predetermined period is larger.