Method for estimating state of charge of series battery system
The invention discloses a method for estimating the state of charge of a series battery system, and the method comprises the steps: building a series battery system model through combining the parameters of a battery monomer model and the working characteristics of a series circuit, and obtaining a...
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| creator | ZHI YIMAI CHEN CHONG KAN JIARONG BAI JIAWEI ZHU ZHIHAO SHEN CUIFENG ZHANG AO PENG SIMIN MIAO YIFAN |
| description | The invention discloses a method for estimating the state of charge of a series battery system, and the method comprises the steps: building a series battery system model through combining the parameters of a battery monomer model and the working characteristics of a series circuit, and obtaining a space state equation through the series battery system model, performing state estimation through an adaptive unscented Kalman filter (AUKF) module with a sliding window in combination with the predicted voltage Ub and the online detection voltage to obtain a state estimation value SOCb; screening off-line data of the single battery through an inconsistency detector to obtain a voltage U, and combining the voltage U with an on-line detection voltage value to obtain a charge state compensation value delta SOCb through a parameter calibrator; and finally, superposing the SOCb and the [delta] SOCb to obtain calibrated SOCr, further updating the battery system model to obtain the battery system SOCb at the next moment, |
| format | Patent |
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| subjects | BASIC ELECTRIC ELEMENTS ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TESTING |
| title | Method for estimating state of charge of series battery system |
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