Leak detection methods supplier INFICON has underscored the vital necessity for thorough testing of all electrical automobile (EV) battery cells, modules, and packs.
At the moment, battery producers in North America don’t conduct exams on 100% of particular person cells which might be assembled into battery packs for electrolyte leakage. This oversight may end up in undetected defects that will result in battery fires, elevated guarantee prices, and important harm to an organization’s popularity.
The lately launched SAE testing normal J3277 affords a framework designed to make sure the integrity of battery packs. It consists of procedures for testing water and coolant ingress, confirming that battery packs are leak-free on the time of inspection. Nevertheless, it doesn’t guarantee the long-term security of the person cells or modules inside these packs.
“Each battery cell ought to bear leak testing earlier than being assembled right into a module and once more post-module fabrication,” acknowledged Thomas Parker, automotive market gross sales supervisor at INFICON. “Cells and modules necessitate testing at numerous phases. Moreover, as soon as a battery pack is accomplished, the inner battery cooling circuits should additionally adhere to leakage necessities. Any leaks in these cooling circuits can rapidly compromise the efficiency and security of the battery.”
Parker emphasised the pressing want for enhanced testing of particular person cells previous to their meeting into packs. “Each metal-ion cell, which is the present normal for EV propulsion, have to be leak-free to forestall liquid or atmospheric moisture from inflicting hazardous degradation over time,” he mentioned.
“The longevity of a battery is closely influenced by the integrity of the cell housing because of the detrimental results that come up from the interplay between the electrolyte and water vapor,” Parker added. “Swift detection of leaks in battery cell manufacturing is significant to fulfill the mandatory service life and security requirements.”
Supply: INFICON
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