Battery Nail Penetration Test

Test summary/features

Lithium-ion batteries and other secondary batteries are equipped with protective elements and protective circuits for safety. But safety testing is important to verify that these features can ensure safety.
Nail penetration testing is a type of safety testing done to simulate internal short-circuiting. The sample battery is penetrated with a nail to simulate an internal short-circuit and verify that the battery does not catch fire or burst.
Along with nail penetration testing, ESPEC also provides a comprehensive range of testing/certification services for compliance with UNECE Regulation R100. We also provide safety testing, test consulting and certification services for vehicle battery packs/modules and energy storage devices.

Test equipment

Support for large batteries

• Tests can be carried out on battery sizes up to the expected maximum workpiece W800xD800xH800mm (excluding jigs).

Equipment particulars

• Nail penetration test system, crush/Nail penetration test system (installed at the Battery Safety Certification Center).

Nail Penetration Test System for Modules

		Nail Penetration Test System	Crush / Nail penetration Test System
Stroke		350mm	800mm
Load		13kN	32kN (momentary maximum 50kN)
Speed		1 to 100mm/s	0.01 to 163mm/s
Measurement unit	Temperature measurement	Thermocouple (T type / K type)
	Data logger	Measures and records battery temperature and voltage.
	Other measurement	Measurement of movement distance, load, and speed.

※ Nail penetration testing is also possible through multi-stage control that combines the automatic stop function (voltage drop, nail penetration amount) and retention time.