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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 11199589 B1

PDFFull Text
Date of Patent:
Dec. 14, 2021

Filed:

Sep. 02, 2019

Method for evaluating consistency of battery pack and strategy for balancing battery pack

Applicant:

Tsinghua University, Beijing, CN;

Inventors:

Dong-Xu Guo, Beijing, CN;

Xu-Ning Feng, Beijing, CN;

Yue-Jiu Zheng, Beijing, CN;

Xue-Bing Han, Beijing, CN;

Lan-Guang Lu, Beijing, CN;

Ming-Gao Ouyang, Beijing, CN;

Xiang-Ming He, Beijing, CN;

Geng Yang, Beijing, CN;

Assignee:

TSINGHUA UNIVERSITY, Beijing, CN;

Attorney:
Primary Examiner:

Daniel R Miller

Assistant Examiner:

Christian T Bryant

Int. Cl.
CPC ...
G01R 31/367 (2019.01); G01R 31/3842 (2019.01); H01M 10/42 (2006.01); G01R 31/00 (2006.01); G01R 31/392 (2019.01); B60L 53/00 (2019.01); G01R 31/378 (2019.01); H01M 6/50 (2006.01); B60L 58/00 (2019.01); H01M 10/44 (2006.01); H02J 7/00 (2006.01); G01R 31/382 (2019.01); H02J 3/32 (2006.01); G01R 31/396 (2019.01); G01R 31/388 (2019.01); G01R 31/385 (2019.01);
U.S. Cl.
CPC ...
G01R 31/367 (2019.01); G01R 31/3842 (2019.01); H01M 10/425 (2013.01); B60L 53/00 (2019.02); B60L 58/00 (2019.02); G01R 31/006 (2013.01); G01R 31/378 (2019.01); G01R 31/382 (2019.01); G01R 31/385 (2019.01); G01R 31/388 (2019.01); G01R 31/392 (2019.01); G01R 31/396 (2019.01); H01M 6/50 (2013.01); H01M 10/42 (2013.01); H01M 10/4207 (2013.01); H01M 10/44 (2013.01); H01M 2010/4271 (2013.01); H01M 2200/00 (2013.01); H01M 2220/20 (2013.01); H01M 2250/20 (2013.01); H02J 3/322 (2020.01); H02J 7/00 (2013.01); Y02E 60/10 (2013.01); Y10T 29/49108 (2015.01); Y10T 29/53135 (2015.01);
Abstract

A method for evaluating a consistency of a battery pack is provided, including: obtaining an initial/real rated capacity and an initial/real dischargeable electric quantity of each cell in a battery pack after a charge and discharge cycle of the battery pack; generating a first/second data diagram for every cells based upon the initial/real rated capacity and the initial/real dischargeable electric quantity; obtaining a first/second information of key cells in the first/second data diagram, defining an initial/real cell distribution region according to the first/second information by processing the first/second data diagram, and calculating a first/second area of the initial/real cell distribution region; and evaluating the consistency of the battery pack according to the first/second area. A strategy for balancing the battery pack is further provided.

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