IEC 62973-2:20 20适用于铁路车辆辅助供电系统用镍镉充电电池。它是IEC 62973-1:20 18的扩展，规定了IEC 62973其他部分的所有电池技术的通用要求。除非另有说明，否则适用IEC 62973-1:20 18的要求。 如IEC 62973-1:20 18中所述，本文件中描述的电池系统与机车车辆上的充电系统结合使用。充电系统（如LVP、转换器等。）不在本文件的范围内。 本文件还规定了设计、操作参数、安全建议、常规和型式试验以及标记和指定。除了IEC 60623:2017或IEC 62259:2003之外，本文件还用于NiCd电池。

IEC 62973-2:2020 applies to NiCd rechargeable batteries for auxiliary power supply systems used on railway vehicles. It is an extension of IEC 62973-1:2018 which specifies common requirements for all battery technologies of other parts of IEC 62973. Unless otherwise specified, the requirements of IEC 62973-1:2018 apply.
Battery systems described in this document are used in conjunction with charging systems onboard rolling stock, as described in IEC 62973-1:2018. Charging systems (e.g. LVPS, converters, etc.) are excluded from the scope of this document.
This document also specifies the design, operation parameters, safety recommendations, routine and type tests, as well as marking and designation. This document is used in addition to IEC 60623:2017 or IEC 62259:2003 for NiCd Cells.