摘要
A kind of management system for electric vehicle (EV) battery series was developed. The system can predict residual capacity for EV battery series and mileages. The system can determine if it is necessary for the battery series to be charged. The system can determine which battery is necessary to be updated for the reason of damage or aging. The system can display the total voltage of battery series, extreme voltage and temperature of every battery in the series. The system can display the accumulative discharge for every battery in the series. The system can alarm when both total or extreme voltage is at low level, or temperature of a battery in the series is at high level. The system provided with a microprocessor as key part can collect and record signal of charging and discharging current, total voltage, extreme voltage and temperature for every battery. The mathematical model of residual capacity for EV lead acid batteries was discussed in details. The system operates well in the laboratory and meets the requirement.
研制一种电动汽车储能电池组管理系统 ,该系统可预测电池组剩余电量和车辆剩余里程 ,判断电池是否需要充电、是否损坏或是否因老化而需要更换 .系统能显示电池组总电压、单块电池端电压 ,显示单块电池自使用以来累计放电总量 .当电池组总电压或单块电池端电压过低 ,或电池温度过高时 ,系统能给出报警信号 .系统以微处理器为核心 ,采集并记录电池组充放电电流信号、电池组总电压信号、各块电池的端电压信号和温度信号 ,以铅酸蓄电池为例 ,较详细地探讨了电动汽车上铅酸蓄电池组剩余电量的数学模型 .系统在实验室里运行情况良好 。
