First, the main direction of the key common technologies of China's new energy vehicles
The "Guidelines for Application" lists the main directions of China's new energy vehicle technology in 2018: power battery and battery management system, motor drive and power, electronics, electric vehicle intelligence, fuel cell power system, plug-in / extended-program hybrid system , pure electric power system. A total of six directions, subdivided into 24 research tasks.
Second, 2018 annual motor drive and power key technology research tasks
1. Development of high reliability vehicle power electronic integrated system for commercial vehicles
Research on multi-converter topology based on power device level integration and integrated package technology of insulated gate bipolar transistor (IGBT) chip; research machine-electric-thermal integrated design technology and electromagnetic compatibility technology; research hardware security redundancy, software fault tolerance And other system functional safety technologies; research the reliability and test methods of integrated power electronic controller products (referred to as PCU). Developed PCU products for 10~12 meters pure electric, plug-in and extended-range passenger cars.
2. Development of high reliability vehicle power electronic integrated system for cars
Research on multi-converter topology based on power device level integration, development of machine-electric-thermal integrated design technology and electromagnetic compatibility technology; research and development of chip integrated packaging technology and hardware safety redundancy, software fault tolerance and other system functional safety technologies; research on integrated power Reliability, life design and test methods for electronic controller products (referred to as PCU). Developed PCU products for Class A and Class B plug-in/extended hybrid passenger vehicles.
3. Development of vehicle motor drive system technology based on silicon carbide technology
Overcoming the low-sensitivity high-density silicon carbide module package, high-temperature high-frequency capacitor design and packaging technology difficulties; researching silicon carbide converter high power density, high-frequency permanent magnet motor design and technology, motor drive system high-efficiency control technology, noise, vibration , smoothness (NVH) and EMC technologies; research integrated integration technology of silicon carbide controller and drive motor; study the life cycle cost evaluation method of silicon carbide motor drive system; develop high current silicon carbide module for vehicle, vehicle High temperature high frequency and high current capacitors, full silicon carbide motor controllers and the entire motor drive system.
4. High-efficiency lightweight wheel hub electric wheel assembly development
Break through the electric wheel integration technology, including the research and development of electric wheel, magnet, heat and vehicle structure application and other multi-field co-simulation technology, breaking through the electric wheel liquid cooling structure and dynamic sealing, low torque ripple and NVH, anti-vibration ability And reliable durability technology. Developed an efficient and lightweight electric wheel assembly.
5. Development of integrated drive motor system
Break through high-speed reducer design, gear processing and grinding, shaft precision machining, casting shell technology difficulties; study high-speed drive motor and reducer structure integration, lubrication and cooling system, NVH technology; master electric drive assembly mass production process and Industrialization technologies such as high-efficiency testing; development of a new generation of high-performance electric drive assembly products.