Standard construction and technological innovation have always been the focus, difficulty, and pain point in the development of new energy vehicles. How to improve the standard system to guide enterprises to produce more energy-efficient and environmentally friendly pure electric vehicles, to facilitate consumers to choose products to meet their needs? How to break through the core technical difficulties and realize the healthy development of the new energy automotive industry? This is a problem that must be solved in the development of new energy vehicles. Standard construction and technological innovation have always been the focus, difficulty, and pain point in the development of new energy vehicles. Around the standard construction, the industry has been exploring. Recently, China National Automobile Industry Center issued the first EV-TEST for electric vehicles in China, marking that the new energy vehicle is further improved from the standard system. Breakthrough in core technology, the industry has been exploring. The fifth "International Seminar on Electric Vehicles and Key Components Measurement" held by EV-TEST during the same period was an active discussion of breakthroughs in new energy vehicle technology. â– The first evaluation procedure was published In 2016, the sales volume of China's 507,000 new-energy vehicles was insignificant compared with the traditional autos of 28,028,000. This was due to the fact that new energy vehicles are new, and on the other hand, they also have a vague understanding of consumers about electric vehicles. There is a major relationship. In order to help consumers raise their awareness and promote the promotion of new energy vehicles more smoothly, China National Automobile Industry Center has released the first domestic electric vehicle evaluation protocol EV-TEST. Wu Zhixin, deputy director of China National Automobile Industry Center, said: "Based on the full investigation and study and drawing on domestic and international experience, combined with China's electric vehicle standards, technology and socio-economic development level, China National Automobile Industry Center has formulated the EV-TEST technical specification and issued an EV. -TEST management rules allow buyers to follow evidence.†According to reports, EV-TEST focuses on the consumer's focus, from the "continuing mileage, power consumption, charging, security, power" five aspects, the electric vehicle "comprehensive standards, test norms, independent and fair" comprehensive evaluation. The evaluation results are given in the form of quantified star ratings and individual performance scores, allowing consumers to intuitively understand the true situation of electric vehicles. More than 90 points for 5 stars, 80 to 90 points for 4 stars, 70 to 80 points for 3 stars, 60 to 70 points for 2 stars, and 60 points or less for 1 star. The assessment vehicles are divided into mini-cars (less than 4 meters in passenger cars) and conventional trains (all other than mini-cars) in length. Each evaluation item is divided into many small items. For example, the continuous mileage test is divided into normal temperature, high temperature, and low temperature tests. The charging test includes exchange compatibility, exchange of 100 kilometers of charging time, charging immunity, and DC charging. With the development of new energy vehicles, the improvement of related standards systems is very loud. The launch of EV-TEST is an important part of the standard system for new energy vehicles. There is still more work to be done to further improve the standards system. â– Core technology breakthrough is the key Compared with the improvement of the standard system, the further improvement of the core technologies of new energy vehicles is even more urgent. As a participant in the formulation of the “Energy-saving and New Energy Vehicle Technology Road Map†and “Made in China 2025â€, Wu Zhixin pointed out the problems in the development of new energy vehicles: China is already the largest country in sales of new energy vehicles, however, the number of 507,000 vehicles The sales volume is composed of a myriad of models. The sales volume of a single model is very low, and no company has achieved economies of scale. At the same time, economies of scale are only superficial problems in the country's new energy vehicles. The inadequacy of core technologies is a major problem that needs real breakthrough. Wu Zhixin specifically stated that in the motor controller, the core component IGBT (insulated gate bipolar transistor chip) still relies on imports; China's power battery industry scale is not lost to others, but the production consistency needs to be greatly improved; China The level of single cells is close to the advanced level in foreign countries. However, there is still a significant gap between the level of battery packs and the international advanced level after the battery is grouped; the integrated vehicle design, lightweight design, etc. need to be improved. The development of new energy vehicles has become a national strategy and a grand vision has been formulated for this purpose. Taking five years as a time node, the output will be 2 million in 2020, and the number of vehicles will be 5 million; in 2025, the production and sales volume will reach 15% to 20% of the total vehicle production and sales; in 2030, electric vehicles and plug-in hybrid vehicles The total automobile output has reached 40% to 50% of the total automobile output, ie 38 million to 40 million vehicles. In order to realize the above grand vision and further break through technical barriers, Wu Zhixin stated that relevant departments will give priority to launching some projects in the near future to promote the development of new energy vehicles in depth. Mainly include: the next generation of high performance pure electric and plug-in hybrid automobile industrialization demonstration project; breakthrough of key parts technology and application demonstration project; integration of renewable energy power generation system, smart grid, smart community and new energy vehicle interconnection Demonstration works. "The development of new energy vehicles is a national strategy and will not be abandoned halfway." Wu Zhixin said. â– To the technical difficulties Focusing on technological breakthroughs, companies and research institutions shared their own R&D results as well as further requirements for the development of new energy vehicle technologies. The reporter noted that both the research and development achievements of the company and the industry’s requirements for the development of industrial technology have led to the development of new energy vehicle technologies in depth. For example, in the aspect of power battery technology and cost control, Wang Quanluo, a senior scientist at the State Key Laboratory in the United States, said: “With the development of new materials, the battery research and development team of the Argang laboratory is expected to increase the energy density of the battery by five times in 2020. Reduce the cost to the current 20%." In the safety of new energy vehicles. The test on the safety of electric vehicles in the EV-TEST of the China Automobile Center puts a “sweeping spell†on the development of related technologies in car companies. Wang Fang, director of the New Energy Laboratory at China Automotive Industry Research Center, said that the EV-TEST vehicle safety test is considered very comprehensive, mainly including electronic control communications, electromagnetic compatibility, collision safety, functional safety, and emergency rescue safety. aspect. There are also corresponding testing requirements in the charging field. The charging of electric vehicles includes AC charging and DC charging, which are divided into four major categories of testing requirements. The first is the test of the charging connection device, which involves the matching of the plug and the socket; the second is the individual test of the car and the charging pile, the use of special equipment to simulate the test of the charging pile of the vehicle, or the simulation of the charging pile to test the vehicle; the third is the experiment. The actual vehicle match test of the vehicle and the charging pile; the fourth is the actual match test of the on-site vehicle and the charging pile, involving the charging efficiency design under no load and full load. In addition, the BMS's safety protection and fault diagnosis, the protection IP rating of the battery pack enclosure, and anti-corrosion, delay prevention and anti-impact capabilities are all important contents of the national testing standards. Wang Fang said: "Only the internal control of the battery under thermal runaway and thermal diffusion can still be effectively controlled to ensure system safety." Safety is an insurmountable gap in the development of new energy vehicles. A series of safety testing requirements issued by EV-TES will also force companies to work harder on safety development.