Battery Acupuncture Test
The Battery Acupuncture Test is a safety test performed on lithium-ion and other rechargeable batteries to evaluate their resistance to internal short circuits caused by physical penetration (such as a nail or needle). This test simulates a real-world scenario where a battery is punctured, leading to potential thermal runaway, fire, or explosion
Technical Specification of Battery Acupuncture Test:
The test follows international standards like UN 38.3, IEC 62133, UL 1642, and GB/T 31485. Key technical specifications include:
Needle Material & Diameter – Typically steel needle with a diameter of 2–5 mm.
Penetration Speed – 10–40 mm/s (varies based on standards).
Needle Angle – Usually 90° (perpendicular) to the battery surface.
Penetration Depth – Full penetration or until a specific depth inside the battery.
Testing Environment – Conducted at room temperature (~20–25°C) or elevated temperatures (~50°C or higher).
Observation Time – Monitor for at least 1 hour after penetration
