GN30 0 - (3)型和 GN4 0 0 - (2 )型碱性镉镍蓄电池是为铁路客车照明及其他用电器供电的直流电源。使用一段时间后 ,蓄电池电解液中有害杂质增多 ,电池容量降低 ,因此 ,在对蓄电池检修时 ,需更换电解液并清洗电池内部。1　问题的提出据调查 ,全路车辆部门均无铁路客车专用的碱 GN30 Type 0 - (3) and Type GN4 0 0 - (2) alkaline nickel-cadmium batteries are used to supply DC power to railway passenger car lighting and other electrical appliances. Use a period of time, the battery electrolyte harmful impurities increased battery capacity decreased, therefore, in the battery repair, the need to replace the electrolyte and clean the battery inside. 1 issue raised According to the survey, the entire vehicle department has no special bus for passenger base