Lithium battery capacity integrated prediction method based on dynamic time-varying weight
A prediction method and lithium battery technology, applied in the measurement of electrical variables, measurement of electricity, measurement devices, etc., can solve the problems of poor engineering usability and low prediction accuracy, and achieve strong engineering applicability, improve accuracy, and improve prediction accuracy. Effect
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[0112] 1. Test data description
[0113] The data used in this experiment is the public data set of lithium-ion batteries of NASA PCoE. The data comes from the Idaho National Lab, and the test object is a 18650 lithium-ion battery on sale, with a rated capacity of 2Ah.
[0114] In this case, a set of battery data includes four lithium-ion batteries (the test codes are respectively B05, B06, B07 and B18), and the life degradation tests of three different profiles are carried out at room temperature, and the parameters of the test process are set as follows :
[0115] (1) Charging cycle: At room temperature, first use the constant current charging method to charge the battery voltage to 4.2V with a constant current of 1.5A, and then continue charging with constant voltage charging until the charging current drops to 20mA ;
[0116] (2) Discharge cycle: at room temperature, discharge four lithium batteries with a constant current of 2A, and set the cut-off voltages of B05, B06...
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