Battery knowledge · Charging infrastructure
Grid-to-vehicle
Power flowing from the grid into a vehicle’s battery — ordinary charging, named to contrast it with vehicle-to-grid. Managed grid-to-vehicle charging shifts and modulates this one-way flow to suit the grid, offering flexibility without the extra battery cycling or the bidirectional hardware that two-way systems need.
- Abbreviation
- G2V
Example
Charging infrastructure: an example situation
A 100 kW model request does not establish real voltage, current, connector or negotiation compatibility.
Read Grid-to-vehicle alongside Charger in this context. The power electronics that convert mains or DC supply into the controlled current and voltage a battery needs. For lithium-ion it runs the CC-CV profile within the limits the BMS communicates, and stops rather than floats when the cell is full.
Use in Lemonergy
Lemonergy Studio blocks
Model signed grid exchange
Explicit battery and converter exchange average power.
Blocks to use
- Scheduled import / export and load policy
Requests signed power
Inputs & settings
- mode
- reserveSoc / targetSoc
- loadPower, outage → command
- Bidirectional grid / load interface
Converts battery and grid/load power
Inputs & settings
- importEfficiency / exportEfficiency
- importLimitW / exportLimitW
- Electrical ports p and n
- Battery with SOC-dependent OCV
Stores charge and supplies terminal voltage
Inputs & settings
- capacityAh
- initialSoc
- emptyVoltageV / fullVoltageV
- resistanceOhm
- Electrical ports p and n
- Electrical reference
Sets zero potential
Inputs & settings
- Connect p to reference net
This overview identifies the components to use. Follow the example in Lemonergy for their connections and settings.
Example. −5 kW requests export; +5 kW requests import. 5 kW exported at 95% efficiency needs about 5.26 kW battery power.
Observe. Reserve and converter limits can reduce export.
This excludes AC waveforms, synchronization, communications and certification.
Open the Studio example →References & further reading
Further reading on this topic
These sources provide broader context; they are not presented as citations for every statement in this entry.
- Electric Vehicle Charging Stations
U.S. Department of Energy, Alternative Fuels Data Center
Topic background · U.S. charging equipment levels, charging infrastructure and connector context. Regional terminology varies.