High–Voltage Distribution Box & Airbag Testing Solution
Changzhou Hopetech Electronics Co., Ltd. is a national-level high-tech original-equipment manufacturer with over ten-year expertise in R&D and manufacturing of electrical performance test equipment.
We own a complete self-developed software-hardware system and have participated in formulating metrology-related standards. Focusing on electrical testing requirements for new-energy-vehicle high-voltage distribution assemblies and passive-safety components, we supply integrated test equipment and customized test systems for OEMs and Tier-1 component suppliers.

✅ PDU Integrated Test System|All–Round Quality Inspector for High–Voltage Distribution Boxes
Core Functions: One-stop comprehensive testing covering short-circuit / open-circuit detection, continuity check, resistance measurement, withstand-voltage test, insulation test, low-resistance continuity test, electronic-lock function verification, thermistor resistance measurement, Hall-effect current-sensor calibration, air-tightness leak detection and other multi-item tests.
Customer Pain Points Solved: Traditional sequential testing with multiple discrete instruments involves cumbersome workflows, low throughput and high risks of missed detection. This all-in-one system completes full-dimension electrical and air-tightness validation for high-voltage distribution boxes in a single run. It greatly shortens production-line test cycle time and catches fatal defects such as insulation degradation and circuit anomalies in high-voltage components.
✅ HP3544/3542 Low–Current DC Resistance Tester|Safety Guardian for Airbag Components
Core Functions: Adopts micro-current measurement principle to test the resistance of airbag igniters.
Customer Pain Points Solved: Conventional resistance testers apply relatively large measuring current, which carries severe risks of unintended airbag deployment during inspection. This model applies micro-current excitation. It delivers accurate igniter-resistance readings while fundamentally eliminating the risk of accidental airbag firing. It balances measuring precision and specimen safety, and fits incoming-material inspection and finished-product sampling test for airbag components.
For the two core safety-critical components of new-energy vehicles — high-voltage distribution boxes and airbags — Hopetech delivers dedicated, complete test solutions. The combined equipment suite covers R&D validation, incoming-material inspection and end-of-line production testing scenarios. It helps automakers and component suppliers mitigate on-board electrical-safety hazards and meet stringent automotive quality-compliance requirements.
| Test Category | Application Scenario / Test Item | Equipment | Key Equipment Functions |
| High-Voltage Distribution Box Test | EV AC charging gun / socket, DC charging gun / socket, high-voltage harness, PDU (Power Distribution Unit), BDU (Battery Disconnect Unit), etc. | PDU Integrated Test System | Supports short-circuit / open-circuit detection, continuity test, resistance measurement, withstand-voltage test, insulation-performance test, low-resistance continuity test, electronic-lock function verification, thermistor-resistance measurement, Hall-effect current-sensor calibration, air-tightness-leakage detection and other comprehensive functional tests. |
| Airbag System | Resistance measurement for airbag igniters | HP3544/3542 Low-Current Version | Measures igniter resistance with micro-current excitation and prevents unintended airbag detonation. |