webeleafowners wrote: ↑
Fri Aug 09, 2019 6:35 am
Interesting article Doug. I’m not sure I get what is doing the job though. The whole charger? Software and a special connecter? I guess what I’m getting at is, can a 100 KW existing DCFC be modified or is a whole new cabinet required. Kinda cool though.
As I understand it:
A CHAdeMO cable/plug in No. America is typically limited to 125 Amps -- Period. *
This Boost mode allows 200 Amps if the cable/plug is below some specified threshold temperature.
Without information of the temperature threshold, or how quickly temperature rises at 100 Amps, there is no way to know the practical utility. It would be tempting to speculate that boost will operate during the winter but then the cold battery becomes the Amp limit. And in the older gen LEAFs that have power electronics limited to 100 Amps this boost mode of CHAdeMO makes no difference at all. A Tesla might be able to utilize 200 Amps if the CHAdeMO adapter is upgraded from its present 125 Amp limit.
I asked Miimura at TMC not too long ago why the Amp rating for CHAdeMO is so much lower than Tesla when both are using non-liquid cooling cables. He thought the major difference was Japanese engineering conservatism and not the hardware. This boost mode would be consistent with a loosening of the engineering spec and perhaps component hardware more suitable for the higher current.