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

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 t