Helium inspection of cylindrical lithium batteries

Can helium be used to detect a battery leak?

Even though the sensitivity of the technique is not yet on par with helium, the selection of appropriate markers for detection, coupled with an understanding of leak dynamics and the calibration of measurement systems, can enable reliable quantification of leaks in various battery formats.

How helium is used in a battery test?

The first step is to insert helium at a known pressure into the battery case through an aperture, typically the electrolyte filling opening (Figure 3). This hole is kept sealed during testing while helium is fed to the cell, the test chamber is evacuated and the presence of helium into the test chamber is monitored.

How do you test a lithium ion battery?

Common lithium‐ion battery types. Testing for leak tightness requires some form of leak detection. Although various leak detection methods are available, helium mass spectrometer leak detection (HMSLD) is the preferred and is being used broadly to ensure low air and water permeation rates in cells.

Why do EV leak detection systems need helium?

This testing is essential in the EV industry, where high quality and safety standards are mandatory. Marposs is meeting these challenges with its leak detection systems that use helium, a light, reliable, inert, non-toxic, and non-flammable gas — making them ideal for precise leak testing.