LITHIUM ION BATTERY STATE OF CHARGE ESTIMATION METHOD BASED ON FIBER GRATING SENSOR

WIPO Patent Application WO/2023/231356

A1

A lithium ion battery state of charge estimation method based on a fiber grating sensor. The method comprises: selecting a lithium ion battery of which the model is known, and collecting test parameters on the basis of a fiber Bragg grating sensor arranged on the lithium ion battery (S100); obtaining, according to model information of the lithium ion battery, known parameters corresponding to the model information (S200); establishing a time series test data set according to the test parameters, establishing a time series target data set according to the known parameters, normalizing the time series test data set, and deleting, on the basis of an upper and lower bound algorithm, an unmatched time series in the time series test data set, to obtain a processed time series test data set (S300); and training a dynamic time warping model on the basis of the processed time series test data set to obtain a battery state of charge estimation model, and obtaining estimated data of a battery state of charge according to the battery state of charge estimation model (S400). The precision of estimation of the battery state of charge is effectively improved.

YANG ZHILE (CN)
ZHOU BANGYU (CN)
GUO YUANJUN (CN)
YAO WENJIAO (CN)
LIU XIANGFEI (CN)
WU CHENGKE (CN)

PCT/CN2022/137071

December 07, 2023

December 06, 2022

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SHENZHEN INST ADV TECH (CN)

G01R31/382; G01R31/367

CN114935721A	2022-08-23
CN114280490A	2022-04-05
CN110308403A	2019-10-08
CN113312527A	2021-08-27
CN112014738A	2020-12-01
CN112067998A	2020-12-11
JP2019144211A	2019-08-29

BEIJING ZHONG XUN TONG DA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)

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