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.