"CATL says its new 5C batteries will retain 80% of their capacity after 1,400 charge-discharge cycles at 140F (60C). With a theoretical range of 372 miles (600 km) per cycle, that works out to a total of 522,000 miles (840,000 km) in what CATL describes as Dubai summer heat. At a milder ambient temperature of 68F (20C), which is closer to the ideal operating temperature for lithium-ion batteries,"
"These improvements were made possible by a dense and uniform cathode coating that reduces degradation, adding a repair additive to the liquid electrolyte meant to seal cracks and reduce lithium loss and special temperature responsive agents sprayed on the surface of the separator inside each battery cell that also extend the life of the battery. The battery monitoring system (BMS) was also enhanced for this application and can direct coolant to any specific area of the battery pack if it gets too hot."
CATL's new 5C batteries retain 80% capacity after 1,400 cycles at 140F and after 3,000 cycles at 68F, equating to roughly 522,000 miles and 1.12 million miles respectively given a theoretical 372-mile range per cycle. The design combines a dense, uniform cathode coating, an electrolyte repair additive to seal cracks and reduce lithium loss, and temperature-responsive agents on the separator. An enhanced battery monitoring system can direct coolant to specific pack areas. The improvements target routine DC fast charging without accelerated degradation, though production timing, real-world performance, and commercial adoption remain unknown.
Read at insideevs.com
Unable to calculate read time
Collection
[
|
...
]