I'm considering getting an EV (motorcycle for now), I'll be documenting the research I'm doing into that theme here
Main problem i see for now is charging outside of the house. The bike I'm looking into has a "type 6" connector, a connector designed to carry only DC, as opposed to the most used type 2 connector for cars which carry AC (and DC on their CCS counterpart).
There are adapters that allow converting the type 2 plug to a regular household plug (schucko), this allows me to use the charging brick to charge the bike on the go. This has two problems tho:
A solution for this would be an adapter that would allow asking the type 2 CCS chargers to spit out a lower voltage to charge the bike directly. This would need a converter since the protcol spoken on type 2 and type 6 are different.
Small issue with this solution is that from what i gathered, most CCS chargers only go as low as 150v, and the battery being ~56v would in theory not work
It's ordered! and.... Got it
It's fun and all, but the fact that it's a completely closed platform is not super interesting
So the protocol that EVs use for communicating with the charge station (SEEC) is ISO 15118-2 (Road Vehicles – Vehicle to grid communication interface).
This protocol quicks in trough PLC (TODO: how to establish that conncetion?) with the charging station outputing on the CP pin (control pilot) a PWM duty cycle of 5%
the PWM "protocol" is used by the charger to let the EV know what is it's power capabilities, 10% dutty cycle meaning 6A, 30% meaning 18A and so on up to 96% for 80A. This signal oscilates between -12 and 12.
The charger knows what the vehicle wants based on a resistance dropping the voltage to a value on the following table:
| State | Peak Voltage | Vehicle connected | Status | Charging possible | Note |
|---|---|---|---|---|---|
| A | 0 | No | Standby | No | Charger not connected |
| B | 9 | Yes | Vehicle Connected | No | |
| C | 6 | Yes | Charging allowed | Yes | |
| D | 3 | Yes | Ventilation | Yes | |
| E | 0 | Yes | Charger shutdown | No | Possible short or charger problem |
| F | -12 | Yes | Error | No | Something is terribly wrong |
In the end the idea of this adapter would cost too much and would be something quite bulky (to hold up with the 100+A without catching fire), I don't do that many long trips so carrying a schuko to type 2 adapter is good enough as a duct tape solution