钠电池 PACK 的连接器有什么要求？

What are the requirements of connectors for sodium-ion battery PACK?

连接器是模组之间、PACK 对外高压插拔对接部件，适配储能、动力设备快速拆装维护，四项核心硬性标准。第一大电流低阻抗设计，导电端子镀银处理，接触电阻极低，大电流传输无明显温升压降；第二高压防误触绝缘，插拔全程无裸露导电金属触点，配套机械锁止结构，振动环境不会松脱断路；第三防水耐盐雾分级管控，室内储能 IP54，海上、户外光伏连接器必须 IP67，长期抵御雨水、海边盐雾腐蚀；第四宽温抗振动，-40℃~105℃稳定工作，持续车辆振动不出现接触不良。额外配置高压互锁检测触点，连接器未完全锁紧时 B 锁禁止高压输出，维修操作前自动切断回路，保障人员操作安全。连接器端子截面与 PACK 峰值电流匹配，配套防尘保护帽闲置时封堵接口，避免粉尘堆积增大接触电阻引发局部发热。

Connectors are high-voltage plug-in docking parts between modules and external PACK terminals, supporting rapid disassembly and maintenance of energy storage and power equipment with four core rigid standards. First, high-current and low-impedance design: conductive terminals are silver-plated with ultra-low contact resistance without obvious temperature rise and voltage drop during large-current transmission. Second, high-voltage touch-proof insulation: no exposed conductive metal contacts during plugging and unplugging, equipped with mechanical locking structures to prevent loose circuit break under vibration. Third, graded waterproof and salt spray resistance: indoor energy storage reaches IP54, while marine and outdoor photovoltaic connectors must meet IP67 standard to resist long-term rain and coastal salt spray corrosion. Fourth, wide temperature and vibration resistance: stable operation from -40℃ to 105℃ without poor contact under continuous vehicle vibration. Additional high-voltage interlock detection contacts are equipped; BMS forbids high-voltage output if connectors are not fully locked and automatically cuts off the loop before maintenance to guarantee personnel safety. The terminal cross-section of connectors matches PACK peak current, and dust-proof protective caps block interfaces when idle to avoid accumulated dust increasing contact resistance and triggering local heat generation.