As electric vehicles (EVs) evolve, the pressure on manufacturers to ensure the performance and reliability of every sealed component continues to grow. From battery modules to sensor housings and control electronics, even microscopic leaks can have significant consequences, such as corrosion, contamination, or long-term failure.
Micro-leak testing provides the precision needed to safeguard sensitive systems and uphold quality at every stage of production.
EV components are exposed to intense thermal cycling, vibration, and humidity. Leak pathways invisible to the eye can allow moisture, gas, or dust to enter sealed enclosures.
Typical consequences include:
Detecting these faults during manufacturing prevents latent field failures and supports long-term product durability.
Battery modules must maintain integrity under pressure, heat, and vibration. Sealing failures may allow external moisture or air to enter, or internal gases to escape.
Leak testing protects against:
Accurate micro-leak detection ensures consistent containment across every module and assembly.
Modern EVs use numerous sensors for control, monitoring, and safety. These components are often miniaturised and exposed to challenging environments.
Micro-leak testing helps confirm that sensor housings remain sealed, avoiding:
Validating the seal integrity of sensors ensures consistent performance throughout the vehicle’s life.
Leak testing methods must match both the material and function of the component. For micro-level detection, commonly used techniques include:
Detects extremely small leaks using helium as a tracer gas. Suitable for high-precision applications including battery housings and sensor modules.
Effective for locating specific leak points in assemblies, connectors, and enclosures.
Efficient for medium-to-high throughput production environments. Offers fast, non-destructive testing for many electronic components.
We design and manufacture high-performance leak testing systems tailored for the EV and electronics industries. Our solutions cover:
Systems are available for inline, semi-automated, and offline configurations, supporting full integration with factory MES systems and data traceability requirements.
Each solution is optimised to meet specific packaging challenges, test speeds, and sensitivity thresholds, helping manufacturers reduce scrap, improve yield, and accelerate time to market.
In EV manufacturing, the ability to detect and manage micro-leaks is central to product quality, reliability, and safety. As packaging becomes more compact and performance expectations rise, precision leak testing is a core enabler of success.
Whether you are scaling production or validating a new platform, the right micro-leak detection strategy ensures your components perform as expected, every time.
→ Learn more about Nolek’s solutions for EV and electronics