Abstract
The braking energy recovery system (BERS) is an important support for the improvement of the mileage of pure electric vehicles. However, the actual feedback effect of the BERS is seriously affected by factors such as ambient temperature and road conditions. To explore the influence factors of the BERS of pure electric vehicles, a widely popular pure electric vehicle is selected as the research object. Based on the CLTC, the 11 segments can be obtained through segment division firstly. Then, the research on the variation law of the brake regenerative energy of pure electric vehicles affected by the normal and low temperature environment and the different segment characteristics can be carried out in this paper. The research shows that the segment characteristics are strongly correlated with the vehicle brake regenerative energy. And the strong braking deceleration and large deceleration means more brake regenerative energy. The ambient temperature indirectly affects the process of the BERS feedbacking energy by causing changes in the total braking energy, the battery charging power and loss and the braking energy distribution ratio. And the low temperature environment means less brake regenerative energy. The research results provide guiding significance for the formulation of the braking energy recovery control strategies of pure electric vehicles.
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