EVs to get range boost, extended life with China's new breakthrough

Researchers at Huaiyin Institute of Technology in China have developed a novel state-of-charge (SOC) estimation method for electric vehicle (EV) batteries, marking a significant advancement in battery management technology. This approach combines a gas-liquid dynamics model with a dual extended Kalman filter enhanced by a watchdog function, enabling highly accurate and robust SOC estimation. The method achieves a maximum SOC error of just 1.6% under normal conditions and can rapidly correct large initial errors within 5 seconds—a 20-fold improvement over conventional techniques. This precision helps reduce EV range anxiety by providing drivers with more reliable range indicators, thereby encouraging broader EV adoption. Beyond improving EV range confidence, the technology supports more efficient fast-charging protocols that maximize charging speed while preserving battery health. It also holds promise for large-scale battery storage systems, potentially enhancing grid reliability and the integration of renewable energy sources. The computational efficiency of the method allows it to be implemented in existing battery management systems without hardware upgrades. Future research aims to adapt this