Battery knowledge · Charging infrastructure
Vehicle-to-vehicle
Transferring energy from one electric vehicle’s battery to another’s through a bidirectional charger and cable, for example to rescue a car stranded with an empty pack. It is one member of the vehicle-to-everything family; the same abbreviation also names radio communication between vehicles.
- Abbreviation
- V2V
Example
Charging infrastructure: an example situation
A 100 kW model request does not establish real voltage, current, connector or negotiation compatibility.
Read Vehicle-to-vehicle alongside Electric vehicle in this context. A vehicle driven by an electric motor from a battery charged from the grid. A battery electric vehicle has no engine; it is the largest market for lithium-ion cells and the driver of most pack technology.
Use in Lemonergy
Lemonergy Studio blocks
Transfer between two batteries
Conserving conversion couples donor and recipient.
Blocks to use
- Battery with SOC-dependent OCV
Stores charge and supplies terminal voltage
Inputs & settings
- capacityAh
- initialSoc
- emptyVoltageV / fullVoltageV
- resistanceOhm
- Electrical ports p and n
- Conserving vehicle-to-vehicle converter
Enforces both batteries’ limits
Inputs & settings
- donorP / donorN
- recipientP / recipientN
- donorReserveSoc / recipientTargetSoc
- efficiency
- Battery with SOC-dependent OCV
Stores charge and supplies terminal voltage
Inputs & settings
- capacityAh
- initialSoc
- emptyVoltageV / fullVoltageV
- resistanceOhm
- Electrical ports p and n
This overview identifies the components to use. Follow the example in Lemonergy for their connections and settings.
- Inspect donor reserve and recipient target.
- Compare energy drawn and delivered.
Example. 5 kW delivered at 90% efficiency needs about 5.56 kW from the donor and produces about 0.56 kW loss.
Observe. Both islands have references and energy flows.
The example assumes hardware compatibility; it does not establish connector or communication compatibility.
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.