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As the mostly used battery in electric vehicle, Li- ion batteries have different electrode materials. To compare the performance difference of Li-ion batteries with different materials at low temperature, LifePO4 battery, ternary polymer Lithium battery and titanate Lithium battery are selected as the research objects. The capacity, open circuit voltage, ohmic resistance and polarization resistance...
A novel 3-D chip-level heterogeneous integration scheme for low cost and rapid pilot demonstration is proposed in this paper. The conventional Bumping fabrication is done at wafer level. However, due to the high cost of whole wafer, opting for chips with advanced technology node is a better alternative. Therefore, with the difficulties of the bumping process at chip level, 3-D heterogeneous integration...
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...
For the electric city bus demonstration operating in Chinese city, based on establishing the system model, this paper uses constant speed and Hefei of Anhui province of China as driving cycles, mainly analyses the influence of the vehicle mass and the average power of the electric auxiliary on the endurance mileage and energy consumption. Simulation results show that, the electric bus studied in this...
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