With the explosive growth of the new energy vehicle and energy storage industries, the sealing performance of battery systems has become a core guarantee of product safety and reliability. Leveraging its high precision, high stability, and intelligent data management capabilities, the AMT air tightness tester provides end-to-end leak testing solutions for the new energy battery and energy storage industry.

I. New Energy Traction Batteries

The sealing performance of traction battery packs (PACKs) and battery cells directly affects vehicle safety and the safety of drivers and passengers. Multi-level, multi-stage rigorous testing is required during manufacturing.

1. Battery Cell Level Testing

The AMT series instruments use high-performance dedicated CPUs and 24-bit A/D conversion, with differential pressure sensor resolution reaching 0.01 Pa, enabling precise identification of micro‑leaks.

2. Battery Module and PACK Level Testing

The AMT series supports various test methods including positive pressure test, negative pressure test, pressure decay test, differential pressure test, and flow test. Users can flexibly choose according to product requirements.

3. Battery Cooling System

• Liquid cooling plate: Water channel sealing test to ensure no coolant leakage

• Refrigerant lines: Hydrogen‑nitrogen mixed gas leak detection, cost only 1/20 of helium testing

• Water valves / water pumps: Dynamic sealing performance verification

II. Energy Storage Systems

As the scale of energy storage power stations continues to expand, the demand for sealing testing of energy storage batteries is becoming increasingly prominent.

1. Energy Storage Battery Packs

The AMT series can store up to 1 million test results, with automatic USB export of test data, facilitating quality traceability and long-term monitoring of energy storage projects.

2. Energy Storage Thermal Management System

• Liquid cooling lines: Large‑flow cooling circuit air tightness test

• Air cooling ducts: Ventilation system sealing test

• Dehumidification units: Sealing verification of container dehumidification equipment

III. Charging Infrastructure and High‑Voltage Connection Systems

Charging infrastructure operates outdoors for extended periods, demanding high levels of water and dust protection.

1. Charging Piles

2. Charging Guns and High‑Voltage Connectors

• Charging gun: Waterproof test at the connection between gun head and cable

• High‑voltage connector: Sealing test of high‑voltage wiring harnesses in new energy vehicles

• Quick‑swap battery connector: Sealing verification of connectors for battery swap systems

The AMT series instruments feature rich interfaces, including RS232 and Ethernet as standard, and can connect to PLCs and other external control devices, making them easy to integrate into automated production lines for charging infrastructure.

IV. Testing Methods and Selection Guide

V. Core Advantages of the AMT Air Tightness Tester

1. High Precision and High Stability
The AMT series uses high‑quality sensors and valve groups, equipped with a high‑performance pneumatic system and embedded computer technology, ensuring high reliability and stability of the test system. Differential pressure sensor resolution reaches 0.01 Pa, meeting the micro‑leak detection requirements of new energy batteries.

2. Intelligent Data Management

• Storage for 100 test programs, multi‑level password protection

• Storage for up to 1 million test results, USB automatic export to Excel format

• Real‑time SPC quality analysis: total tests, pass rate, average of qualified products, and more

• Real‑time test curve display, real‑time monitoring of pressure and time status at each stage

3. Flexible System Integration

• Rich I/O interfaces: 37‑pin I/O output, 25‑pin I/O input for easy PLC connection

• Multiple communication methods: RS232, Ethernet, optional WiFi/Profinet/Profibus

• Can connect to MES systems for real‑time traceability of test data

4. User‑Friendly Operation

• 7‑inch LCD touchscreen, visible under sunlight

• Start/stop buttons with built‑in pass/fail indication (green/red light ring)

• Bilingual Chinese/English interface, suitable for export equipment

VI. Advantages of AMT Solutions

1. Full Process Coverage
From cell‑level testing to complete pack air tightness re‑inspection, from R&D validation to production line inspection, AMT provides leak testing equipment for the entire lifecycle of new energy batteries.

2. Non‑Standard Customization Capability
For special conditions such as irregular battery housings, confined spaces, and high‑pressure testing, custom fixtures and testing solutions are available.

3. Rapid Local Service
Adhering to the service philosophy of "rapid response, mission accomplished," AMT provides 7×24 hour technical support to customers.

VII. Conclusion

In the new energy battery and energy storage industry, leak testing has evolved from a traditional "quality control" step into a core pillar of "safety assurance + efficiency improvement." The AMT air tightness tester, with its professional spirit of "leading technology and continuous improvement," provides reliable, accurate, and efficient leak testing solutions for the new energy industry, helping customers realize the vision of "making manufacturing smarter."

If you have leak testing needs for new energy batteries or energy storage systems, please contact our engineers for a customized solution.