General requirements for electric vehicle charging and national standards for DC charging communication protocols passed review

On October 29-30, 2015, the national standards "General Requirements for Electric Vehicle Conductive Charging Systems" GB/T18487.1 and "Communication Protocol between Off-board Conductive Chargers and Battery Management Systems for Electric Vehicles" GB/T 27930 passed the expert technical review organized by the China Electricity Council, marking important progress in the revision of my country's charging interface standards.

Charging interfaces and communication protocols are basic standards that confirm the interconnection between electric vehicles and charging infrastructure. They mainly include the general requirements for charging systems "General Requirements for Electric Vehicle Conductive Charging Systems" GB/T18487.1 standard, and the AC and DC charging interface "Connection Device for Conductive Charging of Electric Vehicles" GB/T Three series of standards, 20234.1, 20234.2 and 20234.3, and five standards including the DC charging communication protocol "Communication Protocol between Off-board Conductive Chargers and Battery Management Systems for Electric Vehicles" GB/T 27930 standard. Since the release of the above standards, they have played an important role in unifying charging interface standards and standardizing the construction and operation of electric vehicles and charging infrastructure.

The AC and DC charging interface "Connection Device for Electric Vehicle Conductive Charging" GB/T 20234 series of standards has passed the expert technical review on September 19. GB/T 18487.1 "Electric vehicle conductive charging system Part 1: General requirements" and GB/T 27930 "Communication Protocol between Off-Board Conductive Chargers and Battery Management Systems of Electric Vehicles" is under the jurisdiction of the China Electricity Council. Since the revision plan was issued in 2013, the China Electricity Council has jointly carried out revision work with the automotive and electrical industries. After more than a year of hard work, it has summarized the interface and communication requirements in 2011. Based on the application experience since the release of the Xin agreement standard, we have conducted extensive collection of opinions and held many seminars and special meetings with the participation of domestic and foreign enterprises inside and outside the industry. After many stages such as the first draft of the standard, the draft for comments, and the draft for review, it finally passed expert review and formed a draft of the standard for approval. The next step will be reported to the National Standardization Management Committee in a timely manner.

This revision of GB/T18481.1 and GB/T27930 considers the safety and compatibility of charging, adds charging temperature monitoring, mechanical lock and electronic lock linkage, overload and short-circuit protection and other safety measures, improves charging control guidance and timing, fault classification information, redundant protection, etc., and improves the adaptability and operability of the standard.

Charging compatibility is a prominent problem encountered in the current construction and operation of charging facilities. Unification of charging and communication protocol standards is a prerequisite. This time GB/T18481.1 and GB/T27930 passed the technical review and will provide a unified interface standard for the construction of electric vehicle charging facilities. In order to verify whether charging facilities and electric vehicles meet national standards, electric vehicles and charging facilities also need to undergo charging compatibility testing. Currently, the China Electricity Council is organizing electric vehicle charging interoperability testing activities, unifying test procedures and testing platforms in accordance with standards, and giving test conclusions on whether electric vehicles and charging facilities comply with national standards. This activity will be completed before the end of the year and will provide third-party professional testing for the interconnection of electric vehicles and charging facilities.