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CHAdeMO releases high speed charging protocol

EV Charge Network program

CHAdeMO’s new protocol can support a 400-kW charging capacity

Technology company CHAdeMO Association has released its 400-kW protocol (CHAdeMO 2.0: 400 A x 1 kV) to its members. This new version enables charging of up to 1 kV, paving the way towards large commercial vehicles such as trucks and buses.

It can also incorporate a plug-and-charge (PnC) functionality.

CHAdeMO’s protocols enable communications between the car and the charger. This helps to protect an electric vehicles batteries and its user from electric shocks.

CHAdeMO has already enabled its Version 1.2 (published in March 2017) high-power charging of up to 200 kW (400 A x 500 V).

CHAdeMO 2.0 now allows for charging speeds of up to 400 kW, making high-voltage charging of up to 1 kV possible using liquid-cooled cable assemblies (still with the exact same CHAdeMO plug shape) or via pantographs.

In the case of charging with the plug, backward compatibility is ensured, meaning the high-power CHAdeMO chargers can feed power to both current EVs as well as upcoming EVs that have a higher-power charging capability.

CHAdeMO secretary general Dave Yoshida said: “The publication of the new version of the protocol is part of our broader efforts to expand the CHAdeMO protocol to a wider variety of vehicles, including trucks and buses. With the CAN-based communication, it will be a relatively simple but reliable option to charge large commercial vehicles and other industrial applications.

“Combining these vehicles with the V2X technology, for which CHAdeMO is the only enabler today amongst the major international charging standards with readily available products in the market, fleet owners would benefit from an even larger set of options to rethink the TCO (total cost of ownership) of their vehicles, as these vehicles can not only charge but discharge electricity and support the grid.”

The new version of CHAdeMO is also compatible with a CHAdeMO plug-and-charge (PnC) functionality that will make the EV users lives even easier. With the CHAdeMO PnC functionality, the users will have to simply insert the CHAdeMO plug into the EV’s inlet, and the authentication and billing will be done automatically.

To celebrate the publication of CHAdeMO 2.0 and to ensure the development of high-power CHAdeMO chargers, the association is organising a technical demo event in Lucerne next week for its members and shall report on the progress shortly.

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