钠电池的绝缘测试工艺是什么？

What is the insulation testing process for sodium-ion batteries?

绝缘测试属于强制性安全检测，分别检测电芯、模组外壳与正负极极柱之间绝缘电阻、漏电流，排查隔膜破损、金属毛刺、封装漏气、水汽渗入造成绝缘失效隐患。测试设备输出标准高压检测电压，合格电芯绝缘电阻极高、漏电流趋近于零；绝缘失效电芯漏电流超标，存在外壳带电、内部短路、起火爆炸重大安全风险。绝缘测试覆盖电芯裸芯、焊接模组、成品 PACK 三大制造环节，每个阶段全检管控：电芯装配后初检，模组焊接二次检测，整包封装出厂终检，三重拦截绝缘缺陷产品。户外储能、船舶储能长期暴露潮湿环境，绝缘失效极易引发触电事故，绝缘测试是储能电站、车载电池消防安全底线管控工序，所有绝缘不合格品统一隔离报废处理。

Insulation testing is a mandatory safety inspection measuring insulation resistance and leakage current between cell/module shells and positive & negative terminals to eliminate hidden insulation failure risks caused by damaged separators, metal burrs, packaging air leakage and moisture infiltration. Testing equipment outputs standard high detection voltage. Qualified cells feature ultra-high insulation resistance and near-zero leakage current; cells with failed insulation exceed leakage standards with major safety hazards of live shells, internal short circuits, fire and explosion. Insulation testing covers three manufacturing links: bare cells, welded modules and finished PACKs with full inspection at each stage: initial inspection after cell assembly, secondary testing after module welding and final inspection before whole pack factory delivery, triple interception of defective insulated products. Outdoor and marine energy storage operate in humid environments for long periods, and insulation failure easily triggers electric shock accidents. Insulation testing is the bottom-line safety control procedure for energy storage power stations and vehicle batteries, with all insulation-disqualified products isolated and scrapped uniformly.