Battery SOC estimation method applying multiple models parallelly
A multi-model, battery technology, applied in the field of SOC estimation, can solve the problem of low accuracy of the battery SOC estimation method, and achieve the effect of improving the estimation accuracy
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[0024] Such as figure 1 A battery SOC estimation method using multiple models is shown, including a training phase and an estimation phase, wherein the training phase includes the following steps:
[0025] 1) The detection device (LECU) in the battery box is used to detect the battery state parameters. The LTC6803 chip is used to collect the battery voltage U, the Hall current sensor is used to detect the battery current I, and the NTC temperature sensing resistor is used to detect the temperature T; The battery status parameters of n time nodes in the time period, the battery status of the first time node is recorded as: [U 1 , I 1 ,T 1 , t 1 ], the battery status of the node at the second time is recorded as: [U 2 , I 2 ,T 2 , t 2 ]...The battery status of the nth time node is recorded as: [U n , I n ,T n , t n ].
[0026] 2) Using the normalization equation: The battery status of the i-th time node [U i , I i ,T i , t i ], i=1,2,...,n, normalized to: [U' ...
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