CATL, identified as the global leader in battery production, has completed development of a battery system designed for use in electric vertical takeoff and landing aircraft intended to carry passengers. The company announced that its new battery technology has passed a significant safety test required for aviation applications.
The testing process involved deliberately triggering thermal events in adjacent battery cells to verify that the system would not experience thermal runaway or propagation of the failure to other cells in the pack. The test examined cell activation at multiple locations, including the center and corners of the battery packs. Representatives from the Civil Aviation Administration of China witnessed the production, inspection, and testing processes, establishing compliance with civil aviation safety requirements.
According to CATL’s statement, the battery system represents a milestone in aviation technology as the world’s first aviation battery using prismatic cells to achieve an energy density rating of 350 Wh/kg while passing such rigorous safety protocols. The company has indicated that the batteries are ready for mass production and will initially be deployed by Autoflight, an eVTOL aircraft manufacturer.
The development reflects broader trends in the electric aviation sector, where improvements in battery performance and reductions in manufacturing costs have made electric aircraft increasingly viable. While eVTOL technology has been in development for over a decade, recent advances in battery chemistry and energy storage have accelerated commercial viability. CATL’s commitment to battery development for this market segment suggests the company anticipates growing demand for electric aviation solutions in the coming period.
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