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IEC 62660-3:2022
Secondary lithium-ion cells for the propulsion of electric road vehicles - Part 3: Safety requirements
📅 Issue date：2022
🔄 Effective date：2022
🌍 Type：国际标准
01 Scope
IEC 62660-3 specifies safety requirements for EV Li-ion traction battery packs/systems, focusing on electrical safety, thermal-runaway triggering & propagation, immersion and fire exposure.
02 Normative references
- IEC 62660-1 Performance
- IEC 62660-2 Abuse
- UN R100 (ref.)
03 Terms and definitions
Thermal propagation protectionAfter a cell thermal runaway, the system shall not spread to all cells within a set time and shall warn occupants.
Insulation resistanceResistance between HV circuit and vehicle chassis shall exceed a threshold.
04 Technical requirements
In normal & single-fault conditions, insulation, equipotential bonding, overcurrent/overvoltage protection meet requirements.
Pass thermal propagation test: no fire/explosion (or confined) within set time and alarm issued.
Control hazards under immersion, external fire, mechanical crush.
05 Test methods
Trigger a cell by heating/nail; monitor spread & alarm.
Measure HV-to-chassis insulation resistance against limit.
Disclaimer：This page is a technical summary of the corresponding standard for quick reference. All limits, clauses and methods are subject to the official publication and its latest amendments; formal compliance assessment must refer to the official issued text.