China’s proposal to establish an ad hoc working group for China’s DC charging technology “Chaoji” in IEC/TC69 was unanimously approved in the TC’s plenary meeting on 28 April 2021. Composed of experts from IEC/TC69 and SC23H, the working group will focus on the safety and interoperability issues of this Chinese charging technology for interacting with other DC charging systems. A Chinese expert was appointed as the convener of this working group in the meeting.

“Chaoji” is a high-power DC charging technology developed by the China Electricity Council (CEC). CEC started pre-research on the technology and relevant standards early in 2016, and soon after launched numerous rounds of extensive study, discussion, joint technical development, international cooperation, demonstration projects, and international standardization activities. As the technology comes to maturity, China is now striving to promote it up to international stage.

Charging technology and infrastructure play a pivotal role in driving the sustainable development of the new-energy automobile industry. It can significantly improve user experience, by easing drivers’ anxiety on the endurance mileage of their cars. The past few years have witnessed a rapid development on this technology and standards.

During another seminar on “Chaoji” charging technology and standards, held by the China Electrical Vehicle Association on 19 April, experts highlighted the trend and direction of charging technology and standardization in China, namely:

  • High-capacity, rapid, safe, and broadly compatible charging is crucial for the integrated development of transport and energy industries.
  • Problem- and target-oriented approaches are essential for ensuring the top-level design of standardization.
  • Chaoji’s development will be facilitated by enhanced international cooperation.
  • Broad consensus is vital for achieving high quality charging facilities standards.

 

Background:

Established in 1988, the China Electricity Council (CEC) is a nationwide association composed of 1,002 members from the whole electric power industry. CEC holds the secretariat of the Standardization Technical Committee for Electric Car Charging Facilities in Energy Industry, leading China’s standardization work for electric car charging facilities. CEC has also led the establishment of the standards systems for conductive charging, wireless charging, battery-swap, and charging services.