Battery Nail Penetration Tester

Battery Nail Penetration Tester is designed for evaluating the safety performance of lithium-ion batteries and battery packs under extreme internal short-circuit conditions.

The tester simulates thermal runaway caused by mechanical penetration by driving a rust-free steel nail through the center of the largest surface of the battery at a controlled speed and force. The test is conducted at an ambient temperature of 20 °C ± 5 °C, with temperature monitoring to assess battery reaction such as ignition, explosion or thermal instability.

Application

(1) Consumer Electronics Batteries

Lithium-ion batteries used in smarts, tablets, laptops, power banks, Bluetooth ears, smart watches and wearable devices.

(2) Power Tool Batteries

Rechargeable lithium battery packs for electric drills, screwdrivers, garden tools and portable industrial tools.

(3) Electric Vehicle Power Batteries

Cylindrical, prismatic and pouch lithium-ion cells and battery modules used in electric vehicles (EV), electric motorcycles and hybrid electric vehicles (HEV).

(4) Energy Storage Batteries

Lithium battery cells and modules used in residential, commercial and industrial energy storage systems (ESS).

(5) New Energy Battery Systems

Battery packs applied in solar energy storage systems, backup power supplies and communication base stations.

(6) Small Portable Lithium Batteries

Button cells, coin cells and small-capacity lithium batteries used in medical devices, sensors and portable electronic equipment.

(7) Battery Certification & Compliance Testing

Applicable for safety testing in battery manufacturers, third-party laboratories and certification institutions.

Standards

(1) GB/T 18332.2-2001

General Specification for Lithium-Ion Batteries

(2) MT/T 1051-2007

Safety Performance Test Method for Lithium-Ion Batteries Used in Coal Mines

(3) GB/T 31485-2015

Safety Requirements and Test Methods for Power Batteries of Electric Vehicles

(4) GB/T 31241-2014

Safety Requirements for Lithium-Ion Batteries and Battery Packs for Portable Electronic Products

(5) UN 38.3

United Nations Manual of Tests and Criteria – Section 38.3 (Transport of Dangerous Goods)

(6) IEC 62133

Secondary Cells and Batteries Containing Alkaline or Other Non-Acid Electrolytes – Safety Requirements for Portable Applications

(7) UL 1642:2012

Standard for Lithium Batteries

Features

(1) Controlled nail penetration speed and stable penetration force to ensure repeatable test results.

(2) Supports multiple steel needle diameters to meet different standard requirements.

(3) Hydraulic or motor-driven penetration system for high penetration force stability.

(4) Integrated pressure sensing system with LED force display.

(5) Fully enclosed explosion-proof box design for enhanced operator safety.

(6) Fire-resistant, corrosion-resistant and easy-to-clean structure.

(7) Designed for laboratory and production safety testing environments.

Technical Parameters

Parameter Category	Specification
Nail Diameter	ф2 mm – ф8 mm high-temperature resistant steel needle
Penetration Speed	10 – 40 mm/s
Penetration Force	Approx. 2000 kg
Stroke	Approx. 200 mm
Needle Tip to Base Distance	250 mm
Clamping Distance	150 mm
Driving Mode	Hydraulic drive or motor drive
Force Display	Pressure sensing LED display
Test Environment	20 °C ± 5 °C
Explosion-Proof Box Size (W × H × D)	Approx. 450 × 750 × 550 mm
Explosion-Proof Box Material	Galvanized steel with baked paint finish
Machine Dimensions (L × W × H)	Approx. 1640 × 570 × 730 mm
Control Box Size (W × H × D)	Approx. 300 × 260 × 170 mm
Equipment Weight	Approx. 75 kg
Power Supply	Single-phase AC 220 V, 50 Hz

Accessories

(1) High-temperature resistant steel needles (various diameters).

(2) Temperature measuring thermocouples.

(3) Pressure sensing and display module.

(4) Explosion-proof observation window.

(5) Optional data acquisition and recording system.

Test Procedures

(1) Fix the thermocouple onto the largest surface of the battery under test.

(2) Place the battery in the explosion-proof test chamber.

(3) Select the penetration speed and nail diameter according to the standard.

(4) Drive the steel nail vertically through the center of the battery surface.

(5) Maintain penetration position for 5 seconds.

(6) Observe and record battery reaction and temperature change.

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