The hottest inventory of electric vehicle charging

2022-08-08
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Large market: the standardization of electric vehicle charging facilities carried out in 2018

the standardization of electric vehicle charging facilities was laid out in advance in 2018

in 2018, the development of new energy vehicles in China was still rapid. As of November, the cumulative production and sales of new energy vehicles were 1.054 million and 1.03 million respectively, an increase of 63.6% and 68% over the same period last year, and the number of new energy vehicles exceeded 2million. With the rapid development of charging infrastructure, more than 720000 charging piles have been built, providing supporting energy security for new energy vehicles. However, with the rapid growth of the number, there are also many prominent problems, such as safety hazards, low operation efficiency, poor user experience and so on. The short mileage, slow charging and poor charging experience of electric vehicles are still the heartache of electric vehicle owners

this year, the charging technology of electric vehicles is undergoing this profound change. The charging technology is developing rapidly, and the characteristics of rapidity, convenience, intelligence and interaction are further revealed. High power charging technology, wireless charging technology and two-way interaction technology of charge and discharge are gradually industrialized. At the same time, combined with energy storage technology, electric vehicles, intelligent transportation and intelligent energy are more and more closely linked, Cross border integration and development are providing new space for the development of electric vehicles and charging facilities, and the transformation of electric vehicle charging service providers to energy service providers is emerging

the standardization of electric vehicle charging facilities aims at the development trend of electric vehicles and charging facilities in 2018, and plans in advance; In view of the problems encountered in the current industrial development and specifications, accelerate the formulation and revision of standards and carry out laboratory capacity comparison; In response to the internationalization of charging facilities, we actively responded, deeply participated in international standards, and made new achievements in international standardization

(I) deepening the standard system of charging facilities

the standard system is the basis for carrying out standardization work. In order to adapt to the development of charging technology and industrial needs, in 2018, on the basis of the original standard system, preliminary research on the standard system was carried out in the aspects of electric vehicle charging safety, high-power and low-power DC charging technology, electric vehicle charging and discharging two-way interaction technology, respectively in Chengdu, Shenzhen Zhengzhou held a seminar to analyze the technology application scenarios, put forward the standard system, and do a good job in the top-level design in the early stage of the standard

(II) accelerate the pace of standard formulation and revision

in 2018, the standardization of charging facilities proceeded smoothly and the overall progress was orderly. Submit 6 standards to relevant government departments and issue 6 standards. They are "terminology of electric vehicle charging and discharging facilities" (nb/t), "Specification for coordinated dispatching of electric vehicle charging and intermittent power supply" (nb/t), "technical conditions of electric vehicle off board conductive charger" (nb/t), "technical conditions of electric vehicle on-board static DC energy meter" (gb/t), "technical specifications for electric vehicle charging and changing facilities access and distribution" (gb/t) Engineering technical standard for decentralized charging facilities of electric vehicles (gb/t). At present, there are 50 effective standards for charging facilities, and a total of 47 projects are under preparation, including 14 national standards, 13 industry standards and 20 China electricity Union standards

(III) improve the standard technology organization system

in order to strengthen the standardization of electric vehicle replacement technology and promote the industrialization process of the replacement technology route, the establishment meeting of the working group on the standardization of replacement facilities was held on December 11. The Secretary-General unit of the working group is national electric vehicle service Co., Ltd. and the deputy secretary-general unit is BAIC new energy Co., Ltd. In 2018, the working group on testing and certification of charging facilities, the working group on wireless charging, the working group on high-power charging, the working group on information security and the working group on Power Exchange carried out a lot of work around their respective fields, focusing on the preparation and revision of standards and preliminary research, technological development trends, industrial promotion, and using various forms of activities such as conference discussion, experimental verification, standard publicity and implementation, Andre Heim, who was invited to attend the meeting in China a few days ago, said that the upstream and downstream of the industry chain has expanded the representation of participating in the standardization of charging facilities, and has become an important part of the standardization of charging facilities. In view of the necessary patents involved in the standard, the "measures for the administration of necessary patents involved in the wireless charging standard working group" has been formulated

(IV) promote high-power charging technology of electric vehicles

preliminary research on high-power charging technology and standards of electric vehicles in 2018 has achieved phased results. The specific methods are as follows: take down the sample table and the protective ring, and determine the main technical points of each link of the high-power charging system at the working group meeting held in February; The seven pin square end face new interface scheme was determined at the high-power charging demonstration pilot work conference held in June. Various connector enterprises carried out the prototype design, manufacturing and experiment of the new interface, and the preparation for the high-power demonstration pilot continued to advance. The report on the pre research work of high-power charging technology and standards for electric vehicles in China has been prepared. The report systematically analyzes the necessity and urgency of developing high-power charging technology in China, comprehensively expounds the technical scheme for developing high-power charging in China, summarizes the achievements achieved, and puts forward the next work plan

(V) start the low-power DC charging technology of electric vehicles

as a new charging technology, the low-power DC technology of electric vehicles will help simplify the design of electric vehicle charging system, solve the requirements of low-power charging communication protocol, reduce the overall social cost of electric vehicles and charging facilities, and lay the foundation for the large-scale two-way interaction of electric energy in the future. Aiming at the technological frontier of the development of the charging industry and responding to the voice of the industry development, the Standardization Committee held a seminar on low-power DC charging technology and standards, made a systematic and comprehensive analysis of this new charging technology, put forward the development ideas of adhering to the bottom line of safety, developing intelligent and convenient charging technology, planned the standard system of low-power DC charging, and launched the amendment of gb/t18487.1 Preparation work such as discussion on installation requirements of low-voltage distribution system

(VI) research on the two-way interactive technology of electric vehicle charging and discharging

the two-way interactive technology of electric vehicle charging and discharging is the future development direction of electric vehicle charging facilities. With the continuous expansion of the construction and operation scale of electric vehicles and charging facilities, the comprehensive competitiveness of the two-way integration of electric vehicle charging and discharging into the park is significantly enhanced, and the application of interactive technology is gradually emerging, so as to make a good plan for the standard system in advance, Give play to the leading role of standards in technology. The Standardization Committee held a seminar on two-way interactive technology and standards of electric vehicle charging and discharging. The meeting summarized the technical branches of two-way interactive technology, combed the application scenarios of two-way interactive technology, including orderly charging, power demand side management, micro electricity and so on, and put forward the development roadmap of two-way interactive technology standards

(VII) carry out interoperability test laboratory consistency comparison activities

in view of the poor interoperability of laboratories exposed in the first two phases of conduction charging system interoperability test activities, in 2018, a charging interoperability test laboratory consistency comparison activity was carried out, two standard samples of AC charging pile and DC charger were specially prepared, fault defects were artificially set in advance, and circulation tests were carried out in 24 testing laboratories, Find problems, verify the ability of each laboratory, and lay the foundation for the next step of unifying the testing ability of testing institutions. At present, the laboratory consistency comparison test has been completed. In May, a phased summary meeting of AC charging system laboratory consistency comparison was held in Xi'an, Shaanxi Province

(VIII) deepen the wireless charging technology of electric vehicles

with the completion of the preparation of the three national standards for wireless charging, carry out a series of activities around the key issues related to technology and standards in the process of promoting the wireless charging industry. For the selection of wireless charging frequency, we jointly carried out the interference test activities of wireless charging system and broadcasting coexistence with the State Administration of radio and television, and successively carried out on-site test activities in Beijing, Shanghai and Shenzhen, forming an analysis report on the interference of wireless charging system and broadcasting coexistence. In 2018, the wireless charging interoperability test activity was officially launched, and a total of 25 institutions or companies at home and abroad signed up to participate in the test activity. At present, the equipment performance test has been completed and the analysis and research of interoperability principle has been started

(IX) research on charging information security

the preparation of the technical specification for information security of electric vehicle charging facilities has been prepared, and verification tests have been carried out in pilot units. The standard system describes the overall architecture and requirements of information security of charging facilities, and lays a foundation for the next step of information security inspection and improvement

(x) undertake the product identification evaluation of charging facilities carried out by the charging alliance

in 2018, the management of relevant testing and certification institutions was strengthened, and the product identification evaluation of charging facilities was carried out in an orderly manner

(11 displacement maintenance steps of universal tensile testing machine) make suggestions to government departments

actively participate in the formulation of relevant national policies. In the action plan for improving the charging guarantee capacity of new energy vehicles (fgny [2018] No. 1698) just released by the national development and Reform Commission and other four ministries and commissions, it specifically describes the construction and development objectives of electric vehicle charging standard system, and points out the direction for the next work plan of the Standardization Committee

(XII) breakthroughs have been made in international standardization work

the cooperation between China and Germany on electric vehicle standards has been carried out in depth. Working group meetings have been held successively in Beijing, Nanjing and Heidelberg, Germany, to conduct in-depth discussions on high-power charging and wireless charging, and actively promote the process of international standardization. The China electricity Union and Japan chademo agreement will sign a memorandum of understanding on technical and standard cooperation in the field of electric vehicle charging facilities. The world's first series of international standards in the field of electric vehicle charging services led by China, part I: General requirements (IEC), has passed the CDV vote and is expected to be officially released in the middle of next year. At the same time, the standard has also passed the vote in the EU and become the EU standard. Looking forward to 2019, China's new energy vehicle industry is at a critical stage of transition from the introduction period to the growth period, and charging facilities will enter a new stage of development. In the face of the new situation, new requirements and new challenges, the standardization of charging facilities will continue to play a leading role in standards, accelerate the formulation of standards, carry out standard pre research and implementation, participate in international activities, and promote the healthy development of the industry

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(: Liu Xiaona)

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