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.

Date of Patent:
Aug. 04, 2020

Filed:

Sep. 29, 2017
Applicant:

Contemporary Amperex Technology Co., Limited, Ningde, Fujian, CN;

Inventors:

Qiang Yun, Ningde, CN;

Yushuai Shi, Ningde, CN;

Yanhua Lu, Ningde, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3842 (2019.01); G01R 31/367 (2019.01); G01R 31/392 (2019.01); G01R 31/36 (2020.01); G01R 31/387 (2019.01); G01R 31/396 (2019.01); G01R 31/50 (2020.01);
U.S. Cl.
CPC ...
G01R 31/3842 (2019.01); G01R 31/367 (2019.01); G01R 31/3647 (2019.01); G01R 31/3648 (2013.01); G01R 31/387 (2019.01); G01R 31/392 (2019.01); G01R 31/396 (2019.01); G01R 31/50 (2020.01);
Abstract

A method and device for estimating remaining available energy of a power battery is provided. The method includes: estimating, under current state, maximum available energy of a first cell with minimum State of Charge (SOC), and maximum available energy of a second cell with minimum of maximum available capability in the power battery; estimating remaining available energy of the first cell based on its maximum available energy and SOC, and estimating remaining available energy of the second cell based on its maximum available energy and SOC; and estimating the remaining available energy of the power battery based on the number of cells included in the power battery and the smaller one of the remaining available energy between the first and the second cell.


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