Key technologies of high-performance all-climate electric bus

LIN Cheng; TIAN Yu; YU Xiao; XU Yao; JIANG Xiongwei; SUN Fengchun

doi:10.3981/j.issn.1000-7857.2022.14.004

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Science & Technology Review ›› 2022, Vol. 40 ›› Issue (14) : 41-50. DOI: 10.3981/j.issn.1000-7857.2022.14.004

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Key technologies of high-performance all-climate electric bus

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School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

Abstract

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.

Key words

new energy vehicles / electric bus / all-climate battery / dual-motor transmission system / vehicle thermal management

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LIN Cheng, TIAN Yu, YU Xiao, XU Yao, JIANG Xiongwei, SUN Fengchun. Key technologies of high-performance all-climate electric bus[J]. Science & Technology Review, 2022, 40(14): 41-50 https://doi.org/10.3981/j.issn.1000-7857.2022.14.004

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