教练用电动车能量管理系统状态监测及SOC估算方法

电动汽车蓄电池组的状态参数主要指各电池工作时的端电压、电流、温度和内阻;为了及时了解各电池的状况及剩余电量,我们以教练用纯电动车为依托,设计了一套能量管理系统。详细研究其核心部分——状态参数监测部分,实现电压、电流、温度、电阻信号的实时采集,然后基于开路电压法与安时累积法,运用一定的算法估算出SOC,并且换算成剩余续驶里程,最后将相关参数在仪表上实时显示。

State Monitoring and SOC Evaluation of Energy Management System on Training EV

The main state parameters of the EV＇s battery packs refer to terminal voltage, current, temperature and resistance at work. In order to get informed the state and remaining power of battery, an energy management system is designed according to the pure electric training vehicle. The vohage, current, temperature and resistance signals can be collected and displayed in real time through SOC evaluation based on the open-circuit voltage method and the AH accumulation method.