Megawatt Charging System

Example

Use in Lemonergy

Separate compatibility from requested average power.

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DC fast charging

Charging from a station that supplies DC straight to the pack, bypassing the car’s onboard charger, at 50 kW to over 350 kW. The BMS, not the charger, sets the current from moment to moment, which is why the charge curve tapers as the pack fills.

Electric bus

A battery-electric city or coach bus, with packs of 300–700 kWh on the roof and at the rear, LFP or NMC, charged overnight in the depot or at the terminus by pantograph. Its duty cycle — long hours, deep daily cycles, a twelve-year life — makes battery aging the central engineering question.

High-power charging

DC charging at 150 kW and above, up to about 400 kW for cars, usually at 800–1000 V so the current stays within what cable and connector can carry. Liquid-cooled cables make the currents of 500 A and more practical.

ISO 15118

The communication standard between an electric vehicle and a charging station: identification, authorisation, charge scheduling and, in the −20 edition, bidirectional power transfer. It is what lets a car authenticate itself and start charging with no card or app.

Pack voltage

The nominal voltage of the full series string, about 400 V in most electric cars and 800 V in newer ones. Doubling the voltage halves the current for the same power, so cables, connectors and losses shrink and charging can be faster.

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.

1. 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.