Hydrogen technology

Highest precision even for the smallest molecule

As a key element of the energy transition, green hydrogen offers a wide range of possibilities and opportunities in the traffic and transportation sector, in energy storage and sector coupling.

Leak testing in hydrogen technology

Hydrogen is an important component of the energy transition. Electrolysers and fuel cells as well as the storage of green hydrogen will play a decisive role in achieving climate targets. We already offer innovative and reliable leak tests for the bipolar plates of fuel cells. Leak testing of hydrogen pressure vessels and cryogenic hydrogen tanks is just one part of our product portfolio in hydrogen technology.

Maximum tightness for safe, long-lasting batteries

Battery cells, modules and packs must meet the highest requirements in terms of quality, safety, reliability and durability. The tightness of these components plays a decisive role in quality. This is exactly where our innovative leak test comes into play. Our leak testing systems ensure that even the smallest leaks are detected in battery cells, battery cell housings and covers as well as in the end-of-line test of the fully filled and sealed battery cell. In addition, battery modules, battery housings and thermal management components are tested for leaks in order to guarantee maximum safety, durability and performance.

Mandatory leak test: for every cell shape and every application

Regardless of the shape of the battery cell – be it prismatic, round or a pouch cell – a leak test is essential in order to meet the required quality standards. This applies not only to batteries for electromobility, but generally to all battery types and applications that rely on high-performance batteries.

Test methods at a glance: Helium vacuum, sniff test & more

Various methods of leak testing are available, such as helium vacuum leak testing for battery cells or cooling units and thermal management components. The tightness of battery housings (battery packs) can also be tested using a fully automated helium sniffer test.

Safe end-of-line testing: leak testing without helium

During the production process, a battery cell filled with electrolyte and finally sealed can no longer be tested for leaks using the helium-vacuum method. This risk is reduced to a minimum by a final inspection (EOL = end-of-line test). Here, the battery cell is checked for leaks in a vacuum chamber, without helium, but by detecting escaping solvent in the event of a possible leak in the battery cell.

Application examples

Fully automatic helium vacuum leak test of assembled battery cells
Fully automatic and semi-automatic helium vacuum leak testing of battery cell components
Fully automatic helium sniffing of battery housings
Worker-independent and
fully automatic gas bubble detection in the water bath using ultrasound from battery housings
Helium testing of the thermal management cooling element

Advantages

Objective and reliable leak testing under vacuum

Single or multi-chamber testing system Fully automated system

Short cycle times

End-of-line leak test of the battery cell

No drying of parts required

Helium recovery system (optional)

Article holder for other product variants (on request)

Cycle time reduction through additional test chamber (optional)Short cycle times

From the field

Helium leak test - bipolar plate

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Technical data

Effective cycle time: 12 s
Capacity: 300 parts/h
Test gas: 10% helium / 90% air
Leakage rate: 4.8 ⋅ ^10-5 mbar ⋅ l/s

Leak testing of bipolar plates - your reliable testing service for samples, prototypes and small series

The tightness of bipolar plates is crucial for the performance, durability and safety of fuel cells and electrolysers. To ensure this, we offer you a specialized testing service that saves you having to set up your own testing facilities during the development process.

Why our testing service?

When developing new products or manufacturing small batches, setting up your own leak testing system is often uneconomical and time-consuming. Our service allows you to concentrate fully on your core competencies while we reliably take over the leak testing of your bipolar plates.

What we offer:

Testing of samples and prototypes: We test your first prototypes for leaks and help you to identify and rectify design or manufacturing weaknesses at an early stage.
Leak testing for small batches: Even when producing small quantities, we ensure that each bipolar plate meets the high requirements for tightness and reliability.
State-of-the-art testing methods: We use the latest testing methods to simulate real operating conditions in order to detect and rule out even the smallest leaks.

Rely on our expertise and take the next step towards safe and efficient production. Contact us for a customized test offer or more information about our services.