Car charger control is one of the feature of the SG-Hub, a HEMS (Home Energy Management System) which is also suitable for controlling heat pumps and PV-Systems.
Smart charging involves taking energy prices into account. The car battery is charged when electricity is cheapest. To prevent feeding back electricity to the grid, energy consumption data from a P1-meter or Shelly EM is read out. This way, electricity generated by solar panels is used to charge the car battery, instead of feeding it back to the grid.
When a P1-meter is read, the SG-Hub can also apply a power production limit to the PV-system. If household electrical appliances cause high power consumption, the car charger waits to charge so as not to overload the electrical installation.
A bidirectional car charger (BiDi) is able to charge and discharge a car battery. This car charger is more expensive, but offers the advantage that energy from the car battery is used when mains power is expensive.
The current states of our projects are:
SG-Hub for normal car charger:
• Hardware available.
• Software available.
• Functionality including smart charging available.
SG-Hub for car charger BiDi:
• Hardware available.
• The car charger BiDi project is in development.