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Title:
METHOD FOR ESTIMATING BATTERY STATE OF CHARGE AND BATTERY MANAGEMENT SYSTEM EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2021/085869
Kind Code:
A1
Abstract:
The present invention relates to a method for estimating battery state of charge, and a battery management system equipped with the same. A method for estimating the state of charge (SOC) of a battery module assembly including a plurality of battery modules including a plurality of battery cells according to the present invention comprises the steps of: receiving the battery current from a current sensor; comparing the battery current with a threshold current, and selecting a first or second SOC estimation method according to the comparison result; estimating the SOCs of the plurality of battery cells according to the selected SOC estimation method; and estimating the SOC of the battery module assembly by combining the estimated SOCs of the plurality of battery cells.

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Inventors:
SUNG YONG CHUL (KR)
Application Number:
PCT/KR2020/013043
Publication Date:
May 06, 2021
Filing Date:
September 25, 2020
Export Citation:
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Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
G01R31/367; G01R19/165; G01R31/382; G01R31/396; G06N3/08; G06N20/00
Foreign References:
KR20150048439A2015-05-07
JP2016102674A2016-06-02
KR20170020072A2017-02-22
KR20150019190A2015-02-25
KR20190049272A2019-05-09
KR20190137548A2019-12-11
Other References:
See also references of EP 3923006A4
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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