07-06-2022, 12:27 PM
|
#1298 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,697
Thanks: 7,776
Thanked 8,585 Times in 7,069 Posts
|
Firstly, is 70C correct? I didn't go back to look.
Quote:
Energy Efficiency
While the coulombic efficiency of lithium-ion is normally better than 99 percent, the energy efficiency of the same battery has a lower number and relates to the charge and discharge C-rate. With a 20-hour charge rate of 0.05C, the energy efficiency is a high 99 percent. This drops to about 97 percent at 0.5C and decreases further at 1C. In the real world, the Tesla Roadster is said to have an energy efficiency of 86 percent. Ultra-fast charging on newer EVs will have a negative effect on energy efficiency, as well as the battery life.
|
batteryuniversity.com/article/bu-808c-coulombic-and-energy-efficiency-with-the-battery
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
."We're deeply sorry." -- Pfizer
|
|
|
|