Battery Extrusion Needling Test Machine

Test Standard of Battery extrusion needle testing machine

1. GB 31241-2014 Safety Requirements for Lithium-ion batteries and battery Packs for Portable electronic Products

2. UL 1642:2012 Lithium Battery Standard

3. UL 2054:2012 Household and Commercial Battery Packs

4. IEC 62281:2004 Lithium Primary Batteries and Storage Batteries in Transport Safety Requirements

5. IEC 60086:2007 Primary Batteries – Part 4 Safety Requirements for Lithium Batteries

Testing requirements

The test should be carried out at an ambient temperature of 20℃±5℃. Place the fully charged battery on two planes, and the extrusion pressure is 13KN±0.78KN, perpendicular to the direction of the plate. Once the pressure reaches the maximum, the extrusion test can be stopped. During the test, the battery is qualified if there is no external short circuit, explosion, or fire.

1. For cylindrical batteries, the longitudinal axis of the extruded battery should be parallel to the two plates of the extrusion device.
2. Only the wide side of the battery is squeezed for square and soft-pack batteries.
3. For button batteries, the upper and lower planes of the battery are parallel to the flat plate during the extrusion test.
4. High-temperature resistant steel needle, steel needle (needle tip angle 45°~60°, smooth needle surface, no rust, oxide layer, and oil stains), penetrate at a speed of (25±5) mm/s from the direction perpendicular to the battery plate. The penetration position should be close to the geometric center of the punctured surface. The steel needle stays in the battery and observes for 1 hour.

Specification of Battery Extrusion Needling Test Machine 

1. Inner box size: 520x450x560mm WDH
2. Machine size: 800x700x1730mmWDH
3. Inner chamber material: SUS201 stainless steel plate, thickness 1.2mm and coated with Teflon;
4. The outer box material: 1.5mm thick cold-rolled steel plate baking paint treatment;
5. Observation window: 250x250mm,
   Two-layer tempered glass, transparent window is equipped with stainless steel mesh;
6. Smoke outlet: diameter of 100mm, located at the back of the machine;
7. Pressure relief port: The opening size is 200x200mm and is located at the back of the chamber. When the sample explodes, the pressure relief will be released;
8. Door: The single door is left open, the door is equipped with a safety limit switch, and the side is equipped with an explosion-proof chain. The equipment can be operated only after closing the door to ensure the safety of personnel;
9. Test hole: There is a 50mm diameter test hole on the left side of the device, which is convenient to put the temperature, voltage, and current collection line;
10. Lighting device: easy to observe the state of the tested sample;
11. Drive mode: servo motor drive
12. Control mode: touch screen control
13. Extrusion acupuncture parameters:
    *For cylindrical batteries, the longitudinal axis of the extrusion battery should be parallel to the two plates of the extrusion device;
    *For square and soft pack batteries, only the wide side of the battery is squeezed;
    *For coin or button-type batteries, the upper and lower planes of the battery are parallel to the flat plate for the extrusion test;
    *Through the direction perpendicular to the battery plate (steel needle stays in the battery);
14. Pressure range: 1-20kN
15. Pressure display accuracy: 0.1N
16. Sensor resolution: 1/1000;
17. Unit conversion: kg, N, lb
18. Test maximum battery size: 200x200x200mm WHD
19. Extrusion stroke: 250mm
20. Speed: 1-40mm/s adjustable
21. Holding time: 0-99H99(H/M/S can be arbitrarily set)
22. Extrusion head: standard flat plate extrusion head, area ≥20cm²
23. Extrusion degree: extrusion pressure up to 13±0.0.78kN;
24. Sample clamping method: manual clamping, fixture to meet the button type, cylindrical, square battery
25. Weight: 100kg
26. Power supply: AC220V
27. Power: 1KW