Wallbox charging control

To gain a better understanding of how the charging process works with and without a battery, and when prioritising the wallbox or the battery, please refer to the tables below for a brief explanation.

If the option ‘Use home battery for vehicle charging’ has been selected under the Energy Management menu, the battery will still be used under certain conditions to minimise the vehicle constantly switching on and off.

Furthermore, in the event of cloud cover in Solar Pure Mode and Solar Plus Mode, the battery is used to ensure that charging is not constantly interrupted.

Solar Pure Mode

Surplus

Wallbox priority over battery

Use battery enabled

Wallbox priority over battery

Use battery disabled

Home battery priority over wallbox

Surplus > Minimum charging power

  • Wallbox charges using surplus energy.
  • Home battery charges using additional surplus, if available.
  • No grid draw.
  • The wallbox charges when the home battery is full or using additional surplus energy, if available.
  • The home battery charges using surplus energy.
  • No grid draw.

Surplus < minimum charging power

  • The wallbox charges at the minimum charging current.
  • The home battery discharges to cover household consumption and the charging process.
  • No grid draw.
  • The wallbox is not charging.
  • The home battery charges using surplus energy.
  • No power is drawn from the grid.

No surplus

  • The wallbox is charging at minimum charging current.
  • The home battery is discharging to cover household consumption and the charging process.
  • No power drawn from the grid.
  • The wallbox is not charging.
  • The home battery discharges to cover household consumption not covered by PV.
  • No power is drawn from the grid.

Solar Plus Mode

In Solar Plus mode, the minimum charging power can be set. The explanations in this mode always refer to the set minimum charging power.

Surplus

Wallbox priority over battery

Use battery enabled

Wallbox priority over battery

Use battery deactivated

Home battery priority over wallbox

Surplus > Minimum charging power

  • Wallbox charges using surplus energy.
  • Home battery charges using additional surplus, if available.
  • No grid draw.
  • The wallbox charges when the home battery is full or using additional surplus energy, if available.
  • The home battery charges using surplus energy.
  • No grid draw.

Surplus < minimum charging power

 

Surplus > minimum charging power
*Slider

  • Wallbox charges at minimum charging current.
  • The home battery discharges and covers the household’s consumption.
  • Electricity is drawn from the grid.
  • The Wallbox charges at minimum charging current when the home battery is full, or using any additional surplus energy, if available.
  • The home battery charges using surplus energy.
  • Grid draw may occur.

Surplus < minimum charging power

 

Surplus < minimum charging power
*Slider

  • The wallbox charges at minimum charging current.
  • The home battery discharges to cover household consumption and the charging process.
  • Power may be drawn from the mains.
  • The wallbox is not charging.
  • The home battery charges using surplus energy.
  • No power is drawn from the grid.

No surplus

  • The wallbox is charging at minimum charging current.
  • The home battery is discharging and covering both household consumption and the charging process.
  • Power may be drawn from the grid.
  • The wallbox does not charge unless the slider is set to 0.
  • The home battery discharges to cover household consumption not covered by PV.
  • Power may be drawn from the grid.

Hysteresis

  • The home battery may discharge due to hysteresis.
  • Power may be drawn from the grid.
  • The home battery must not discharge for hysteresis.
  • Power may be drawn from the mains.

Power Mode (Mains charging)

Surplus

Wallbox priority over battery

Use battery enabled

Wallbox priority over battery

Use battery disabled

Home battery priority over wallbox

Surplus available

  • Wallbox charges at maximum charging current.
  • Home battery charges using additional surplus energy, if available.
  • The home battery discharges to power the wallbox if the surplus is insufficient for the maximum charging current.
  • Power may be drawn from the mains if the home battery is empty.
  • The wallbox charges at maximum charging current.
  • The home battery charges using any additional surplus energy, if available.
  • The home battery does not discharge to the wallbox.
  • Power may be drawn from the mains.
  • The wallbox charges at maximum charging current.
  • Grid draw is reduced when the home battery is full or additional surplus energy is available.
  • The home battery charges using surplus energy.
  • Power may be drawn from the mains.

No surplus available

  • The Wallbox charges at maximum charging current.
  • The home battery discharges to supply the wallbox.
  • The home battery discharges to cover household consumption not covered by PV.
  • Power may be drawn from the grid.
  • The wallbox is charging at maximum charging current and drawing 100% from the grid.
  • The home battery discharges to cover household consumption not covered by the PV system.
  • Grid draw occurs.