electric vehicle batteries

This article discusses Revision 3 of UNECE Regulation No. 100, which introduces new safety requirements for rechargeable energy storage systems in electric vehicles, including updated tests and standards for battery packs and thermal propagation protection.

The state of health of cells in a battery pack under operating condition is difficult to obtain through existing IEC and ISO standard methods under laboratory conditions. However, a cell state of health (SOH) profile shall be able to establish by the comparison of electro-impedance spectroscopy (EIS) generated statically versus dynamic operating data retrieved by battery management system (BMS) communication interface as fragments of EIS.

EV batteries and battery packs are complex systems, requiring a comprehensive design and testing strategy to help ensure safe and efficient electrical power.

Electric vehicle batteries may have as much as 80% usable capacity when they are no longer suitable for powering motor vehicles. This article explores the post automotive options for these components, and discusses important considerations regarding their use.