【摘要】 针对纯电动矿车蓄电池在高功率大电流反复充放电的冲击下效率降低,寿命缩短的问题,以某载质量55 t纯电动矿车为研究对象,建立大容量磷酸铁锂电池寿命预测模型,在满足车辆动力性能和能量需求条件下以提高车辆经济性和蓄电池使用寿命为目标,对磷酸铁锂电池-超级电容复合能源进行参数匹配。运用基于规则的复合能源控制策略,在Matlab/Simulink平台上,采用ADVISOR2002进行仿真。结果表明,复合能源能有效提高纯电动矿车车载能源效率,延长蓄电池使用寿命,提升纯电动矿车的经济性能和动力性能。更多还原

【Abstract】 Aiming at the efficiency lowering of the battery in electric mining truck due to the impact of repeating charging and discharging with high power and large current,a life prediction model for a large-capacity lithium-iron phosphate battery in a 55 t battery electric mining truck is established. In a condition of meeting the power performance and energy requirements of vehicle, with enhancing vehicle fuel economy and battery service life as objectives, a parameter matching on battery-ultracapacitor hybrid energy storage system is conducted. With the rule-based hybrid energy control strategy, a simulation is performed on Matlab/Simulink platform by using ADVISOR2002. The results show that the hybrid energy storage system can effectively improve the energy efficiency of battery electric mining truck, extend the service life of battery and enhance the fuel economy and power performance of battery electric mining truck.更多还原