杭州地铁电客车蓄电池温控充电模式优化

Optimization of Battery Charging Mode under Temperature Control on Hangzhou Metro Electric Cars

杭州地铁2号线电客车采用阀控密封式免维护铅酸蓄电池。日常运行时由辅助逆变器内的充电机,采用温度补偿机制,设置不同的充电电压对蓄电池充电。在2号线开通运营期间,蓄电池因充电温度补偿曲线设置的缺陷,造成多节蓄电池过充鼓包。针对该类故障分析研究后,基于杭州地铁2号线电客车蓄电池充电控制曲线,通过增加故障情况下温度控制策略和充电温度监控报警,变更了温度补偿范围,避免了因温度传感器故障导致蓄电池长期过充而损坏。

The maintenance-free sealed type lead-acid battery with controlled valve is used on Hangzhou metro line2electric cars.In the daily running operation,and by using the temperature compensation mechanism,the charger inthe auxiliary in verter sets up different charging voltages for charging batteries.During the operation of Hangzhou metro line2,due to the defects of the temperature compensation curve setting for the battery charging,the batteries are over charged and have bulging bumps.With the analysis of the faults,based on the Hangzhou metro line2electric carsbattery charge control curves,by adding temperature control strategy under fault conditions and charging temperature control monitoring alarms,the range of temperaturecompensation is changed,avoiding long-time overcharge damages to the battery caused by temperature sensor faults.