高性能全气候电动客车的关键技术

Key technologies of high-performance all-climate electric bus

现有电动客车动力平台不能满足适用于传统燃油客车的最高车速及最大爬坡度的高性能应用需求,以及严寒环境正常启动、低温环境续驶里程不锐减的全气候应用需求。针对以北京理工大学牵头的技术团队研发的高性能全气候电动客车平台,综述了全气候电池系统、双电机同轴自动变速驱动系统、整车多热源协同热管理系统等面向全气候电动客车关键技术,分析了全气候电动客车的实验及成果在北京冬奥会的应用。结果表明,研发的高性能全气候电动客车在严寒环境适应性、爬坡-高速工况动力性等方面,适用于2022北京冬奥会应用场景,满足其严苛要求。

The new energy vehicles represented by the electric vehicles are included in China’s strategic emerging industries After 20 years of development,China’s electric buses are now in the leading position in the world.However,the existing powertrain platform of the electric bus cannot meet the high-performance application requirements for the maximum speed and the best grade ability of the traditional fuel-powered buses,as well as the all-climate application requirements for startup in severe cold environments and without a sharp reduction in the cruising range in low temperature environments.For the highperformance all-climate electric bus platform developed by the technical team led by Beijing Institute of Technology,this paper analyzes the key technologies of the all-climate electric bus,including the all-climate battery system,the dual-motor coaxial propulsion transmission system,and the vehicle multi-heat source collaborative thermal management system,as well as allclimate electric bus experiments and applications in the Beijing Winter Olympics.It is shown that the developed highperformance all-climate electric bus is suitable for the application scenarios of the 2022 Beijing Winter Olympics and meets its stringent requirements in terms of adaptability to severe cold environments and dynamic performance under climbing and highspeed conditions.