Improvement of the safety of Li-ion batteries subjected to fast/cold charge constraints
The Li-ion battery is the technology selected by all car manufacturers to provide the energy storage required for electrified vehicle deployment. A battery, during its lifecycle, can encounter a wide range of operating conditions. Some of those operating conditions can accelerate battery degradation and can lead to safety issues.
An experimental campaign on the effect of operating at cold temperature condition, conducted on NMC811-SiC cylindrical cells, has highlighted safety issues. The physical mechanism believed to cause these safety issues is Li-plating.