Has anyone experiences with using an electric-car as home battery. Although not all cars are suitable for a bi-directional connections, i am curious to know if their is already some experiences with this. In addition how to connect it in combination with a 3-phase Victron Multi plus II setup?
Vehicle to Grid (aka V2G) still seems to be experimental and so not very many car have this capability.
Theoretically, V2G capable vehicles could be AC coupled to the AC Out of a MultiPlus and supply loads and house battery charging that way.
I'm not sure on how V2G is to be controlled, the idea being that the network operators can somehow summon energy from cars whose owners have agreed to participate in assisting when demand is high. No idea if the vehicle owner could control this.
One of the problems with using your car's battery as a home batter - or as an extension to a home battery is the operating voltage, car batteries are 380 - 800V, and so are incompatible with low voltage systems. The DC charging port (fast charge) does allow direct access to the battery though, so can be used for discharging.
On the practical side though, this will increase the wear on the car battery - which is more expensive to replace. It will also leave the battery in a uncertain state of charge when disconnected. On disconnection, the house system becomes reduced in capacity.
There are some Chinese inverters that do allow this, though.
I know some of the trucks have fairly large inverters. Would these get involved in providing home power? That is, AC coupling the inverter output to the home energy system?
I am trying to follow what Marc at https://www.switch-ev.com/ is doing but I am not sure it is production ready yet… although it all sounds very nice and they are taking a good open source approach so it may work in the end…
It is possible to use an electric car as a home battery, but it is not a common practice and may require additional equipment and modifications. Some electric cars, such as the Tesla Model S and Model X, are equipped with a bi-directional charging system that allows for charging and discharging, making them suitable for use as a home battery.
To connect an electric car to a 3-phase Victron Multi plus II setup, you would need to purchase an EV-to-grid inverter, which would convert the DC power from the car's battery to AC power that can be used in your home. Additionally, you would need to make sure the car is compatible with the inverter and that the inverter is compatible with the Victron Multi plus II setup. It is also important to note that using an electric car as a home battery can reduce the car's battery life and may void the car's warranty. It is also important to note that the use of EV as a home battery is not common and not supported by many EV manufacturers and it is not recommended to use your EV as a home battery unless you have a proper understanding of the technical aspects and the legal requirements. See more https://autospecs.net/
