siai47, thank you for your posts. I'm a bit concerned with your 365v, as my Canion shows exatly 360vdc at 100% SoC. Your 365v translates to 4.091v/cell. 365v would be getting it up to 4.148v/cell. Doesn't really matter, as you shut down before then and use the built-in iMiEV BMS for topping up, anyway.
I'm doing something similar with my Sparrow and its EnerDel lithiums (NMC): to increase charging rate (for the few very rare times that I need to), I simply parallel a few of my 120vac and 240vac Zivans - have stuffed over 40A at 140vdc into the pack with no temperature rise at all. At 5C max charging, my 62Ah EnerDel pack should be good for over 300A steady-state if I want to… NOT!
Now, I'm interested in putting an Anderson connector onto our i-MiEV pack so I can try out a range-extender concept as well as a parallel charger, but I don't have CHAdeMO: where would you suggest is the best/easiest place to tap into the HV? What I was thinking of doing is adding a pigtail and bringing it up behind the little panel door in the right rear, although alternately I could put a small hatch onto the left rear cover in the CHAdeMO input area.
For my battery-powered range-extender I was looking at having it diode-isolated and kick in when the main pack started getting below about 345v-350v. Even though I have enough EnerDels to get up to that voltage in series, I prefer limiting everything that's exposed to 48vdc. Still looking for a 48v-->350v dc-dc converter with an output of over a kilowatt.
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV