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A novel fractional-order Kinetic Battery Model (KiBaM) is proposed to accurately describe the battery nonlinear characteristic of the available capacity under discharge. Firstly, the influence of different discharge current on battery available and unavailable capacity is analyzed. Then, with the theory of fractional calculus, a novel KiBaM model model equation is proposed to characterize the battery...
The accurate estimation of state of charge (SOC) is crucial for the management of the power battery for electric vehicles. The electric vehicle often encounters data mutation when it is actually running. In this paper, a new adaptive fading extended Kalman filter (AFEKF) is applied in the SOC estimation of Lithium-ion battery. AFEKF can reduce the influence of data mutation through the adaptive iterating...
Lithium ion batteries play vital roles in the development of electric vehicles (EVs). To shorten charging time, increase charging efficiency and reduce battery temperature variation, multi-segment charging (MSC) strategy is studied in this paper. Compared to constant current (CC) charging, MSC divides charging process into several segments according to fast charging theory. Taguchi method is applied...
In conventional equalizers, the facts of bulky size and high cost are widespread. Particularly, the zero-switching loss and zero-voltage gap (ZVG) between cells are difficult to implement due to the high-frequency hard switching and the voltage drop across power devices. To overcome these difficulties, a direct cell-to-cell battery equalizer based on quasi-resonant LC converter (QRLCC) and boost dc–dc...
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