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Listen to Professor Wang Zhengshi of Zhejiang University explain the technical scheme of on-board power supply

for magnetic components and power supply enterprises, on-board power supply is the core technology of new energy vehicles, and on-board power supply is one of the important parts of new energy vehicles, mainly including on-board AC-DC charger and DC-DC converter that complete the functions of pulling, pressing, bending, shearing, peeling, tearing, friction coefficient, changing, etc. Recently, the China Automobile Industry Association released the economic operation of the automobile industry in October, which showed that the production and sales of new energy vehicles in October hit a record high in a single month, and the sales volume increased by 104.5% year-on-year. Although the new energy vehicle market has been improving for a long time, it currently accounts for only about 5% of China's passenger car market. The rapid development of the resolution of new energy steam power value can almost reach 1 in 100000 vehicles, which also drives the development of the vehicle power market

according to the data, in the early stage of the development of domestic new energy vehicles, due to the lack of obvious market demand, foreign on-board power supply enterprises did not seize the development opportunities, giving domestic on-board power supply enterprises and domestic new energy vehicle manufacturers the opportunity and time to develop supporting on-board charger products. However, due to the deep cooperation between foreign parts enterprises and domestic new energy vehicle enterprises in other parts, although they have entered the domestic new energy vehicle market for a short time, they can also quickly enter the supply system of mainstream vehicle enterprises. This has squeezed the development space of domestic on-board power supply enterprises and new energy vehicles to a certain extent

in order to better explore the new energy vehicle market, on November 27, the "15th New Energy Vehicle core power technology seminar" and the "8th new energy vehicle electric drive and BMS and charging device technology seminar" hosted by big bit information will bring together industry experts and scholars to jointly discuss the technical problems and market trends of new energy vehicle core devices

the organizer also invited Wang Zhengshi, a professor from the Department of Applied Electronics, School of electrical engineering, Zhejiang University, to share the theme of "technical scheme of on-board charger (OBC) and on-board power supply" for practitioners in the new energy vehicle industry chain, including the characteristics and development of on-board power supply of electric vehicles, unidirectional and bidirectional OBC circuit scheme, on-board dc/dc conversion power circuit topology scheme OBC faces challenges and new technologies that greatly reduce the weight of components

[guest introduction]

Dr. Wang Zhengshi is a member of the magnetic technology special committee of the Chinese power supply society

research direction: high performance power electronic power conversion, high efficiency, high power density, high frequency circuit topology of dc/dc converter, spring of high power factor rectifier/inverter plastic industry: advanced digital control technology of wood plastic composites entering the rapid development period, high performance power conversion in electric vehicles (on-board charger OBC, on-board dc/dc, deeply integrated on-board power conversion, etc.), high efficiency power conversion in new energy power generation, Design of high frequency magnetic components of inductors and transformers in power electronic power converters. Responsible for and participated in more than 40 scientific research projects, including national and government research projects, international cooperation projects and enterprise commissioned R & D and design projects. He has published more than 70 academic papers and international conference papers, edited/participated in the preparation of 3 monographs

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