“The basic content has been completely determined. The new national standard for charging is expected to be released before the end of this year,†Liu Yongdong, deputy director of the China Electricity Council’s Standardization Management Center, said in an interview. October 30, 2015, National Standard “General Requirements for Conductive Charging System for Electric Vehicles†GB/T18487.1 and “Communication Protocol between Non-vehicle Conductive Chargers and Battery Management Systems for Electric Vehicles†GB/T27930 Passed China Power The expert technical review organized by the enterprise federation, the two national standard technical examinations, plus the three AC/DC charging interfaces "electrical vehicle conductive charging connection device" GB/T20234 passed the technical review in September, the content of the new national standard charging revision work It has all been completed and it has entered the approval stage.
Recently, the reporter went to the China Electric Power Enterprise Association to interview Liu Yongdong as agreed. When the reporter arrived at the office of Liu Yongdong, he happened to meet with him. He was in talks with two staff members of a charging information platform company. The reporter had the privilege of listening to the end of the talk. The conversation involved the understanding and positioning of the charging information platform and the positioning of the company on itself. , development expectations and standard recommendations are the predictions and discussions of industry insiders on the development prospects of the electric vehicle charging industry, and also reflect the daily work of Liu Yongdong.
Liu Yongdong, Deputy Director of the Standardization Management Center of China Electricity Council
â– Safety is the first priority
In addition to the release of the new national standard, what journalists are most interested in is the core content of this revision? Liu Yongdong said that the revision of the five standards focuses on solving problems related to safety and compatibility, and safety is the top priority. Liu Yongdong said that safety is the core content of the new charging standards. In order to improve safety, safety measures such as charging temperature monitoring, interlocking of mechanical locks and electronic locks, and overload and short circuit protection have been added to this revision, and charging has been improved. Control guidance and timing, fault classification information, redundant protection, etc., especially the environmental conditions, for example, divided into four kinds of charging modes, some of which are prohibited from use, and other charging modes provide detailed current Enhance the safety, adaptability and operability of charging.
In view of the overcharge caused by BMS misreporting, there are also ways to deal with this revision. Liu Yongdong explained that the charging system serves the BMS and charges according to the instructions of the BMS. Once the BMS instruction is wrong, it may cause overcharge. In view of this, the backup protection is added in this revision, and it is found that the BMS abnormally stops the charging. To prevent danger from overcharging.
In terms of compatibility, Liu Yongdong stated that the previous version was subject to technical conditions and technical knowledge, and that the standard clauses were incomplete. This time detailed many articles. “In addition, considering the development of technology, the voltage and current coverage will be more Something wider.†Liu Yongdong added.
As Liu Yongdong said, the reporter found that GB/T 18487.1 “Electric Vehicle Conductive Charging System Part 1: General Requirements†has amended and added as many as 15 items, basically focusing on safety and compatibility.
â– Cost of renovation or not so high
The addition and revision of a number of contents will inevitably mean a large-scale transformation of the original charging facilities. How much will the increase in the amount of costs for the investment and construction enterprises be increased by 15 items?
In this regard, Liu Yongdong said that the renovation of charging facilities will inevitably produce transformation costs, but the cost of transformation may not be as high as it seems. He explained his views to reporters from three aspects: First, the number of charging piles is relatively small at present, and compared with the future, the cost of reconstruction at this stage is the lowest; secondly, a considerable part of the existing charging facilities have been dedicated. Facilities, which are dedicated to the use of specific vehicles, can be used without modification if they are not facing the public domain. Third, the standard revision work has been carried out gradually since 2013. The entire revision process is open, and many charging facilities companies, The car companies can follow the revision process to adjust the products. Therefore, there may not be so many places where charging facilities need to be adjusted and the cost is not so high.
Liu Yongdong said that it is easy to understand that due to the very high degree of openness in this revision, companies that really want to make a difference in the field of electric vehicle charging have a deep understanding of the importance of charging standards and will always keep an eye on the revision process. The standard revisions adjusted their own products in order to complete the harmonization of the charging standards with the minimum renovation costs.
For Liu Yongdong, this revision brings him a lot of experience. The enthusiastic participation of companies is one of them.
â– The article is important to understand
Liu Yongdong told reporters that he was most impressed by the high degree of concern of all parties and the enthusiasm of enterprises to participate in the revision process. The degree of participation in the enterprise is even wider than he has ever seen. "We have solicited two rounds of opinions on the national standard GB/T18487.1, and received a total of more than 700 feedbacks. We have specially organized two meetings to sort out these feedbacks. This is the situation that I have never met in the years that I used to be a standard. "Liu Yongdong explained to reporters. "When publicly soliciting opinions, we will give conclusions on the feedback we receive and explain them one by one, trying to get the parties to understand why their opinions were chosen," Liu Yongdong said. In his view, the industries involved in the charging industry are very extensive. Different industries have different perspectives and there are differences in their understanding of the standards. Therefore, it is very important for the parties to reach a consensus and explain the work.
When talking about understanding the differences, Liu Yongdong told reporters: “We have found that companies do not have enough understanding of the first edition of the national standard. Although the first version of the national standard is not perfect, there is still a part of the reason that companies have failed to attach importance to it. The national standard and the incomprehension of the meaning of the national standard lead to the widespread existence of incompatible piles."
In terms of popularization of the new national standard, Liu Yongdong said that the relevant departments will increase propaganda to understand the standard meaning as much as possible to help understand the content of the national standard. In addition, Liu Yongdong also put forward proposals for companies in the field of electric vehicle charging. “The new national standard will be released soon. He hopes that companies in the industry can actively study and earnestly understand and implement the national standard.â€
Liu Yongdong also stated that due to the inconsistencies in the incompatibility of the vehicle piles, the China Electric Power Enterprise Federation is currently organizing charging interoperability testing activities for electric vehicles. According to the standard unified testing procedures and test platforms, whether the electric vehicles and charging facilities meet the national standards Give test conclusions. “Understanding the differences in standards is a common phenomenon. To solve this problem, it is also necessary to establish a testing and certification system.†Therefore, he hopes to urge the company to actively participate in this work through the media to detect the matching of vehicles and charging equipment.
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