●Drive battery technology: Ni-MH batteries, Ni-Cd batteries, lead-acid batteries, sodium-sulfur batteries, lithium-ion batteries, fuel cells, etc., should have high specific power and specific energy, and meet the requirements of power and driving range: charging The time is short and the charging cycle is many, so as to facilitate the use and ensure the life.
● Motor technology: There are mainly four types of motors: DC motors, permanent magnet motors, switched reluctance motors, and AC induction motors. It requires light weight, high efficiency and good reliability.
●Drive system control and integration technology: Most of the single-chip microcomputers and power devices are used as the control system, and the power devices mainly use IGBTs (insulated gate bipolar transistors).
●Battery monitoring and management system technology
●Charging system technology
●Electric vehicle layout and matching technology
2. Current status and development trends at home and abroad
Since the 1990s, foreign countries have focused on electric vehicle technology on key battery technology research. The three major U.S. auto companies have invested US$2.6 billion in cooperative research. The USABC project jointly conducted by American battery manufacturers has also targeted Point to batteries for electric vehicles. The current status of battery technology is still far from the practical requirements of electric vehicles, making electric vehicles unable to compare with conventional vehicles in terms of power performance, driving range, manufacturing cost, and reliability. The prospect of electric vehicles basically depends on breakthroughs in battery technology. In recent years, batteries such as nickel-metal hydride, lithium, and fuel have been relatively optimistic, and a large amount of money has been invested in research. The improvement of traditional batteries such as lead-acid and nickel-cadmium is also underway.
The State Science and Technology Commission and the Planning Commission organized research topics on electric vehicles during the "Eighth Five-Year Plan" and "Ninth Five-Year Plan" period. Recently, the electric vehicle project was included in the "Tenth Five-Year Plan". Large domestic automobile companies, universities and research institutes We also have a positive attitude towards the research of electric vehicles. Through the modification of electric vehicles, we have carried out multiple rounds of trial production, and strive to achieve the industrialization of electric vehicles by the end of the "Tenth Five-Year Plan".
3. "Tenth Five-Year Plan" objectives and main research content
① Goal: Solve key technologies, complete the development of practical electric vehicles, and realize industrialization.
②Main research content: the overall design of electric vehicles; advanced battery technology; electric motors and control drive systems; vehicle monitoring and management systems, use environment and supporting technologies, etc.
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