jadnashuanh wrote:You need to understand that the charging circuits are actually IN the car, and the i3 is limited to a maximum of 7.4Kw from its internal power supply. An EVSE is simply a smart, on/off switch with a cord.
No need for the condescending tone. I'm fully aware that the charger is in the car (except when DC charging) and if you read the thread (and look at BMW's updated website!) it's quite clear that the 2017 i3 has a charger that accepts 11kW via a new 3-phase Wallbox.
Whether that means the Wallbox converts the 3-phase supply into a single phase 45A supply (still 11kW) to the car via either a Type 1 or Type 2 connector, or that the car accepts the 3-phases via (only) a Type 2 (Mennekes) connector is what is unclear to me.
That's what I'm trying to work out.
jadnashuanh wrote:From what I've read, BMW specifies a longer charging time for the larger battery in the 2017 which implies they did not change the on-board charging circuit.
As I've posted, BMW's updated site demonstrates quite clearly that the 2017 i3 has an updated 11kW charger...
jadnashuanh wrote:While both the Euro Menikes and the US J1772 plugs include 3-phase inputs
That's not possible with a J1772 plug/socket as I understand it. You can't have three phases travelling down 3 wires (Live, Neutral & Ground), you need FIVE wires for that (L1, L2, L3, Neutral & Ground) and the i3 in Europe does indeed have a Mennekes socket which is designed for 3-phases, which is why it has 7 pins (five for power, two for data/connection). Whether it actually uses them is unclear... but the answer is probably 'no' by the sounds of things.
I'm starting to come to the conclusion from reading between the lines on various sites (including BMW's) that:
- the updated i3 does indeed have an updated 11kW AC charger
- that the new wallbox will convert a 3-phase supply to a single phase (probably up to 45-50A) for supply to the car via either Type 1 or Type 2 sockets
- that the car currently can't accept 3-phases at the plug (even if the Mennekes plug is designed for it), nor will the 2017 vehicle