CHAdeMO Association releases the latest CHAdeMO protocol, CHAdeMO 3.0
Operating under CHAdeMO communication protocol, CHAdeMO 3.0 is the first publication of the next-generation ultra-high-power charging standard being co-developed by China Electricity Council (CEC) and CHAdeMO Association with the working name “ChaoJi.” The Chinese version, operating under the GB/T communication protocol, is also planned to be released next year.
The CHAdeMO protocol is a direct current fast-charging standard recognized by the IEC. It set its specification at 500 V and 125 A when it was initially defined in 2009. After updates in 2017 and 2018, its current specification goes up to 1000 V and 400 A to cater to the market demand.
This latest version enables DC charging with power more than 500 kW (maximum current 600 A), while ensuring the connector is light and compact with a smaller diameter cable, thanks to the liquid-cooling technology as well as the removal of a locking mechanism from the connector to the vehicle side. Backward compatibility of CHAdeMO 3.0-compliant vehicles with the existing DC fast charging standards (CHAdeMO, GB/T, and possibly CCS) is reported, meaning that today’s CHAdeMO chargers can feed power to both current EVs as well as future EVs via an adapter or with a multi-standard charger.
Started as a bi-lateral project, ChaoJi has developed into an international collaboration forum, mobilizing expertise and market experience of key players from Europe, Asia, North America, and Oceania. CEC and CHAdeMO Association co-hosted the 1st International ChaoJi Technical Workshop in Tokyo in July 2019. India is expected to join the team, and governments and companies from South Korea and South-eastern Asian countries have also expressed their strong interests, reports the organization.
It is also reported that Japan and China have agreed to continue working together on the technical development and to promote this charging technology through further technical demonstration events and the trial deployment of the new chargers. In February, the association announced the successful completion of the first charging demonstration in Japan of the protocol.
The testing requirements for CHAdeMO 3.0 specification are expected to be issued within a year. The first ChaoJi EVs will likely be commercial vehicles and are expected to be launched in the market as early as 2021, followed by other types of vehicles, including passenger EVs.