Robustness is critical when developing new battery cells. In the automotive industry, companies shoot for no worse than a 20 percent capacity loss after 700 charging cycles....
I’ll never understand why there’s a transmission in a fully electric. Put four pancake motors at the wheels. Easier to cool, smaller motors, redundant power.
There’s no way a typical BLDC/ACIM can’t spin at the tire’s RPM. If you’ve got a 16” tire then at 100mph you’re spinning at roughly 1000rpm; these motors typically spin 3.5x that fast.
Even though this VW is fully electric, the transmission will still find a way to blow up.
I’ll never understand why there’s a transmission in a fully electric. Put four pancake motors at the wheels. Easier to cool, smaller motors, redundant power.
A shit ton of unsprung mass, crap ride quality.
Transmission isn’t for low end but high end rpm. 4 separate motors doesn’t help if the motor can’t spin fast enough.
There’s no way a typical BLDC/ACIM can’t spin at the tire’s RPM. If you’ve got a 16” tire then at 100mph you’re spinning at roughly 1000rpm; these motors typically spin 3.5x that fast.