China’s State Administration for Market Regulation formally approved ChaoJi-1’s three key standards on September 12, including general requirements, communication protocols between chargers and vehicles, and requirements for connectors.
For context, ChaoJi-1 is the next-gen counterpart of the GB/T charging standard currently used in the world’s largest automotive market, as indicated by Green Car Reports.
ChaoJi-1 details
ChaoJi-1 employs the newly conformed coupler and compatible charging system with CHAdeMO 3.1, CHAdeMO’s latest variant. However, it functions under the GB/T communication protocol.
Notably, it is compatible with high-power charging of up to 1.2MW. It also takes into account the charger’s current and future adaptability to adhere to the safety standards of EV charging.
According to CHAdeMO, the approved standards require a high-power temp runaway detection system with local technical features, such as follows:
- “a layered and upgradable communication protocol architecture to support future needs and functions that will continue to emerge,
- a new DC control pilot circuit and a safe charging system model, which achieved high level of charging safety and reliability,
- DC charging system compatibility laying the foundation for the future unification of global DC charging technology, as ChaoJi is designed to be compatible with all of existing DC fast charging standards.”
Compatibility project progress
The Chinese and Japanese Governments initially launched the ChaoJi project in 2018. The ChaoJi-2 of the CHAdeMO protocol debuted in 2020, followed by the conformance test protocols after a year.
The project suffered from some delays because of the outbreak of the COVID-19 pandemic. Nonetheless, Japan began the prototype testing of the latest CHAdeMO 3.1.
See Also:
- How China established the largest EV charging network in the world
- Audi to launch its 1st charging stations in China this year
- CATL advances as the most valuable private energy company in China
- Hyundai to compete with Tesla Superchargers with a new 350kW EV charging system
- Electric vehicles now more affordable than gasoline cars in China
State Grid Corporation of China and other operators have deployed 80+ ChaoJi-based high power** DC chargers across 30+ charging locations nationwide.
