now that my EV is driving mostly alright, I want to be able to power some 230V accessories like an electric oven or a sound reinforcement system. Most DIY solutions seem to either tap off the 12V battery with a power inverter like one would do on a ICEd vehicle or to attach the HV battery to chassis ground. I want to do neither due to efficiency and safety reasons respectively, so I propose the circuit in the following wiring diagram (please excuse the crude drawing):
For now, I don't want to add Foccci to my car (that's a project for later), but when I do, this appliance inverter would be mostly ready as a drop-in solution. I do realize that this means for now that (at least with sufficiently large capacitors on the magic component) I can't switch the DC breaker on while the main contactors are closed (not that I would want to do that anyways).
I also considered buying and hacking a V2L module (or another OBC with V2L) from an existing car, but that would be relatively expensive, time consuming, limited in output power, less modular and not a (mostly) guaranteed success.
Now I have a few questions:
- Would my solution be electrically safe? How could safety break down?
- Almost all labeled components can be acquired easily and cheaply. Do you have any idea how to source the "Magic isolating booster circuit"?
- Where are the pitfalls, which other questions should I be asking?