Battery knowledge · Charging infrastructure
Onboard charger
The converter inside the vehicle that turns AC from a home or public socket into DC for the pack, typically rated 7–22 kW. DC fast chargers bypass it, which is why they can be so much more powerful. [1]
- Abbreviation
- OBC
Example
Charging infrastructure: an example situation
A 100 kW model request does not establish real voltage, current, connector or negotiation compatibility.
Read Onboard charger alongside CC-CV charging in this context. The standard lithium-ion charge protocol: constant current until the cell reaches its upper cutoff voltage, then that voltage held constant while the current tapers. The charge ends when the current falls to a set fraction, often C/20.
Use in Lemonergy
Design protocol or analysis tool
Find the charge-time limit
The separate Charge session compares power, current, acceptance and CV limits.
Equation or tool to use
- Charge session
Runs against the selected cell and pack
Inputs & settings
- Source power
- Connector current
- Start / target SOC
- End-of-charge C-rate
This overview identifies the components to use. Follow the example in Lemonergy for their connections and settings.
- Select a rechargeable cell and pack.
- Open Analysis → Charge session; increase power.
Example. A 50 kW source at 400 V cannot deliver 50 kW through a 100 A ceiling; that current limit corresponds to 40 kW.
Observe. Read the named limiting reason.
This differs from the Studio network and requires cell resistance data and product access.
Open Design → Charge session →References & further reading
Technical references
- Electric Vehicle Charging Stations
U.S. Department of Energy, Alternative Fuels Data Center
Technical reference · U.S. charging equipment levels, charging infrastructure and connector context. Regional terminology varies.