Electric vehicle battery technology faces innovation and safety challenges

Developments in electric vehicle (EV) battery technology and management are highlighting both opportunities and risks. Mercedes-Benz has introduced new smart charging services, such as ‘MB. Charge Home Dynamic’, which allows vehicles to adjust charging strategies based on real-time market electricity prices.

However, regulatory and safety concerns persist. In Germany, the Bundesnetzagentur is facing criticism from manufacturers like BMW and Ford regarding new rules for bidirectional charging. The industry warns that treating EVs as stationary storage could lead to double taxation of grid fees, making the practice unprofitable for consumers.

Safety and maintenance also remain critical issues. Reports indicate a rise in fires caused by improperly disposed lithium-ion batteries in waste management facilities. Additionally, a German court ruled that an e-bike owner is not liable for a fire caused by a battery months after a minor, externally undamaged crash.

On the technical front, researchers at Cornell University have developed the ‘Direct Electrode-to-Electrode Regeneration’ (DEER) method, which aims to reuse battery components directly rather than shredding them, potentially reducing recycling costs and energy use. Meanwhile, a study by AVILOO emphasizes the importance of testing the ‘State of Health’ (SoH) of used EV batteries, noting that capacity varies significantly even between identical models.