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Electric vehicles (EVs) develop with high-speed in recent years. The automotive manufacturers recommend that battery will be replaced, when the remaining capacity reaches 80%. However, the capacity left in the battery can be used to support other fields, which requires lower performance. This paper attempts to analysis the feasibility of transportation battery second life used in communication base...
The design of a physics-based reduce-order battery model is especially desired by the automotive researchers and engineers due to the demand of battery system diagnosis and prognostics. Taking the problem into account, three physics- based electrochemical models include Pseudo two dimensional (P2D) model, extended single particle (ESP) model, single particle (SP) model are analyzed in this paper....
The battery performance deterioration at low temperature attracts more attention. In order to improve the performance at low temperature, a discharge thermal model with external heating is proposed. Discharging tests with and without heating are taken respectively at -27℃ and -17℃. The pack energy enhancement ratio is proposed for the first time to evaluate the discharge energy...
This paper proposed a new method of state of peak power capability prediction for Li-ion battery. Electrochemical impedance spectroscopy based equivalent circuit model is used as the reference model of battery dynamic characterization simulation, state of peak power capability is predicted based on the model and parameters estimation by fractional joint Kalman filter. By decomposing the voltage response...
This paper presents a comparative study of five sorting methods for Lithium-ion batteries. The principle of each method and the feather of the sorting parameters are obviously described firstly. Then, optimized implement the experiment on LiFePO4/graphite cells. Sorting results are clearly analyzed subsequently. By analyzes the relationship among the parameters, there are strong correlation between...
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