钠电池 PACK 的防尘等级有什么要求？

What are the dust resistance grade requirements for sodium-ion battery PACK?

PACK 防尘为 IP 防护第一位数字，粉尘、秸秆、金属碎屑侵入会磨损线束、堵塞汇流排增大接触电阻，分场景严格管控分级。室内机房 UPS、数据中心洁净环境最低 IP5X，阻挡大部分细微粉尘堆积；农村户用储能、太阳能路灯、植保机田间扬尘大，基础标准 IP54；矿山、港口、工地叉车等高粉尘恶劣工况要求 IP6X 完全阻隔粉尘；海上风电叠加盐雾粉尘同步执行 IP6X。粉尘侵入长期积累会造成汇流排氧化锈蚀、BMS 电路板短路、电芯绝缘隔板失效，大幅缩短 PACK 使用寿命。防尘依靠壳体折弯一体成型、全周密封胶条、防水防尘连接器、独立隔仓接线仓协同实现。高粉尘产线 PACK 额外加装防尘滤网配合风冷系统过滤空气杂质，定期维护清理，粉尘等级不达标的储能设备不允许投入矿山、田间户外场景使用。

The first digit of IP protection stands for PACK dust resistance. Invasion of dust, straw scraps and metal debris will wear harnesses and block busbars to raise contact resistance, with strict graded control for different scenarios. Indoor machine room UPS and data centers with clean environments adopt the minimum IP5X to block accumulation of most fine dust. Rural household energy storage, solar street lamps and plant protection machines with heavy field dust take IP54 as the basic standard. Mining, port and construction forklifts under severe high-dust working conditions require IP6X to completely isolate dust. Long-term accumulated invasive dust causes busbar oxidation and rust, BMS circuit short circuits and failure of cell insulating separators, drastically shortening PACK service life. Dust resistance is realized jointly by integrally bent shells, full-circumferential sealing strips, dust-proof waterproof connectors and independent wiring compartments. PACKs for high-dust production lines are additionally equipped with dust filter screens cooperating with air cooling systems to filter air impurities for regular maintenance and cleaning. Energy storage equipment failing to meet dust resistance grades is prohibited from mining and field outdoor scenarios.