When it comes to Yadea Group, the "big brother" in the electric vehicle industry, people may first think of its considerable scale and profitability. In the past 20 19 years, Yadea has created a milestone of global industry revenue exceeding one million, with net profit increasing by 19.8% and sales volume increasing by 20.85% year-on-year, achieving the achievement of global sales ranking first and market share of 16.6% for three consecutive years. Therefore, it has become the only enterprise in the two-wheeled electric vehicle industry among the top 500 private enterprises in China in 20 19.
But Yadea Group's "high-end strategy" does not stop there. On May 30th, the salient-pole motor (permanent magnet synchronous hub motor) developed by Yadea for seven years passed the appraisal of the expert appraisal committee of China Machinery Industry Federation. The Committee believes that the extended range technology of salient-pole motor for electric motorcycles in Yadea is leading in the world, and its manufacturing technology and energy efficiency have reached the international leading level. The practical application shows that compared with similar models, the cruising range of the whole vehicle is greatly improved. This is enough to illustrate the quality and details of Yadea as a technology company.
As the most convenient means of transportation for people to travel, the long battery life and great power of two-wheeled electric vehicles have always been the demand of consumers. After more than 20 years of development in China, the problem of "cruising range and power cannot be balanced" has never been solved. It can be said that the advent of salient-pole motor solved this problem by improving salient-pole ratio, copper full rate, torque, copper loss, rotor weight, high-precision energy recovery and other scientific and technological innovations. From then on, electric vehicles really ran far and fast. According to industry insiders, this is a revolutionary innovation in the field of electric vehicles!
Judging from the specific innovation achievements, nine authoritative experts in the field of motor and electronic control in China have become the judging committee, and the experts summarized the scientific and technological innovation of salient-pole motor in Yadea into three aspects:
Firstly, the salient pole motor adopts spoke and modular structure, the hub adopts non-magnetic SMC reinforced composite plastic, and integrates high-precision sensor technology, which improves many performances of the motor. Lightweight SMC reinforced composite plastics simplify the assembly process and improve product reliability and production efficiency.
Secondly, the control strategy based on the optimal current trajectory is adopted, and the regional maximum torque-current ratio (MTPA) and maximum torque-voltage ratio (MTPV) technologies are adopted to improve the high-precision torque control and the overall efficiency of the system.
Third, it was tested by the third-party testing organization of the National Motor Vehicle Product Quality Supervision and Inspection Center (Shanghai). According to the national standard GB/T24 157, the test results of this project in constant speed method and working condition method are obvious.
These slightly difficult technical terms for consumers represent that Yadea electric vehicles will be stronger and better in terms of vehicle power, starting acceleration performance and battery life. Noise and vibration will be reduced, and ride comfort and comfort will be greatly improved. Participants said that the salient-pole motor extension technology of electric motorcycles in Yadea has completely changed the cruising range of ordinary people.
As the saying goes, "Liang Jia hides in Xu Ruo", the research and development of science and technology usually goes through a long technological breakthrough, and Yadea salient-pole motor is no exception. According to Zhuo Dajun, director of R&D project, Yadea salient-pole motor has made breakthroughs in seven aspects, such as embedded spoke structure of magnetic steel, magnetoelectric absolute value encoder and high-precision energy recovery system. After more than seven years of polishing, it finally succeeded. There are too many difficulties and challenges in the middle, which are still vivid in retrospect.
In the long-term development process, it is the enterprise's creed to internalize scientific and technological genes in the heart and externalize them in the line. The financial report shows that Yadea Group has continuously increased its investment in technology research and development in recent years, reaching 386 million yuan in 20 19, up 26.4% year-on-year, which is 2.9 times of the R&D expenditure in 20 15. * * * owns 763 patents (including 36 invention patents), and constantly upgrades and iterates the core components such as motors, batteries and electronic controls to achieve results.
Zhuo Dajun also revealed that the National Motor Vehicle Product Quality Supervision and Inspection Center (Shanghai), which is responsible for this test, was also surprised by the cruising range of salient-pole motors. At first, I thought there was something wrong with the instrument. After many verifications, it was finally confirmed that the performance of salient-pole motor in terms of power performance and cruising range was really excellent, which filled the gap in the industry.
"Relying on excellent quality, Yadea has continuously strengthened the development of international export business and the building of international brand image, exported to 77 countries around the world, and 15 leads in high-end sales, with more than 36 million users worldwide. It can be said that it is with the effectiveness of science and technology that Yadea Group can "last" the international leading new potential energy and realize a virtuous circle of R&D, production and sales, thus creating a "higher-end" green travel mode for consumers around the world. " Zhou Chao, senior vice president of Yadea Group, said in an interview.