钠离子电池在电梯应急电源领域有什么优势？

What advantages do sodium-ion batteries have in elevator emergency power supplies?

电梯应急 EPS 用于电网断电后轿厢平层、应急照明、呼救通讯，安装于电梯机房狭小密闭空间，常年恒温或冬夏温差大，要求电池高安全、长寿命、低维护、低温稳定，钠离子电池相比传统铅酸、锂电具备多重适配优势。第一安全性能拉满，电梯机房密闭散热差，夏季温度可达 55℃，钠电池热分解温度高，短路、过充不会起火爆炸，杜绝机房火灾重大安全隐患。第二优秀低温放电，高层北方楼宇冬季机房低温，断电后仍能输出充足电量完成平层救援，不会出现电源亏电轿厢困人故障。第三超长循环，日常浮充浅放电工况 3000 次以上循环，稳定使用 6-8 年，铅酸电池 2-3 年必须更换，减少电梯年检电池更换支出。第四极低自放电，电梯长期通电浮充但偶发断电，数月静置不亏电，无需定期人工补电维护，降低物业运维工作量。第五无铅酸硫酸盐化失效缺陷，浮充工况容量不会快速衰减，机房长期无人值守性能稳定。第六体积重量优化，同等容量比铅酸轻量化，机房狭小安装空间更容易排布设备。第七批量采购成本低于磷酸铁锂 EPS 电池，老旧电梯改造、新建楼盘配套预算压力更小。第八全生命周期环保，废旧电芯无铅污染，物业统一回收流程简单。第九电压平台平稳，断电切换瞬间无电压跌落，应急照明、对讲通讯不会黑屏断联，保障被困人员求救畅通。电梯应急电源对安全、免维护要求极高，钠离子电池完美匹配楼宇电梯常年密闭、高低温交替、偶发应急放电的使用特性，是老旧电梯更新换代优选储能产品。

Elevator emergency power supplies (EPS) realize car leveling, emergency lighting and emergency communication after grid blackout, installed in narrow closed machine rooms with large seasonal temperature swings, requiring batteries with high safety, long life, low maintenance and stable low-temperature performance. Sodium-ion batteries outperform conventional lead-acid and lithium cells in multiple aspects. Firstly, top-tier safety: poorly ventilated elevator machine rooms reach 55℃ in summer; sodium cells feature high thermal decomposition temperatures without fire risks under short circuit or overcharge to eliminate severe fire hazards. Secondly, excellent low-temperature discharge capability ensures sufficient power for rescue leveling after power failure in cold northern high-rise buildings, avoiding passenger entrapment caused by power depletion. Third, ultra-long cycle life over 3,000 cycles under daily floating charge and shallow discharge supports 6~8 years of stable service, while lead-acid batteries need replacement every 2~3 years and raise elevator annual inspection costs. Fourth, ultra-low self-discharge eliminates regular manual supplementary charging for long-term floating standby, cutting property maintenance workload. Fifth, free from sulfation failure defects of lead-acid batteries, capacity will not decay rapidly under floating charge with stable unattended year-round performance. Sixth, optimized size and weight: lighter than lead-acid batteries of equal capacity for easier layout in compact machine rooms. Seventh, lower bulk procurement cost than LFP EPS cells, reducing budget pressure for old elevator renovation and new real estate projects. Eighth, eco-friendly full life cycle without lead pollution with simple centralized recycling for property management. Ninth, stable voltage platform without instantaneous drop during power switchover, sustaining lighting and intercom connectivity for trapped passengers. Elevator emergency power demands extreme safety and maintenance-free operation. Sodium-ion batteries fully match the operating characteristics of building elevators under year-round closed space, alternating high/low temperatures and occasional emergency discharge, standing as the preferred energy storage product for old elevator renovation.