Langsc (Langsco) Single-Cell Forced Internal Short-Circuit Test System:
Powered by a Siemens PLC controlling a stepper motor, this system is purpose-built for safety testing of lithium-ion cells (and battery packs) used in portable electronic devices. It complies with Clause 5.5 of JIS C 8714:2007, as well as the test requirements of GB 8897 and UL 1642.The test chamber features fire protection, an exhaust/ventilation function (to discharge waste gases after the test), and a fire-resistant observation window. The pressure-applying unit uses a touchscreen, menu-driven interface. Two key test parameters—test pressure and pressure holding time—can be set via on-screen controls. The system also supports initial pressure zeroing, and automatically displays the actual measured pressure, cell voltage and voltage drop, and the actuation/pressing speed.

1. Performance Specifications

1. Pressing fixture material: Stainless steel

2. Pressing fixture size: 10 mm × 10 mm square column

3. Dimensional accuracy: ±0.2 mm

4. Pressing speed: 0.1 mm/s

5. Speed accuracy: ±5%

6. Pressing stroke range: 0–50 mm

7. Stroke accuracy: ±2 mm

8. Force range: 0–1000 N

9. Force accuracy: ±1% ±2 digits

10. Resolution: 1 N

11. Cell voltage measurement range: 0–9999 mV

12. Voltage accuracy: ±1% ±2 digits

13. Resolution: 1 mV

14. Temperature control range: 10–60 °C

15. Temperature accuracy: ±2 °C

16. Pressure holding time range: 0–99 s

17. Timing accuracy: ±1 s

18. Stepper motor torque: 8 kg·cm

19. Display & operation: Touchscreen or remote PC control

20. Overall dimensions: Approx. 950 mm (L) × 1024 mm (D) × 1650 mm (H)

21. Power supply: 220 V ±10%, 50 Hz ±2 Hz