摘 要：本文针对纯电动客车对驱动电机的特殊需求，设计了一款大功率、大转矩的扁线绕组电机，重点阐述了扁线绕组构型、水油复合冷却方式及关键制造工艺等核心技术方案。仿真验证结果表明，该电机峰值转矩达2500N·m，最高效率超过98%，额定工况温升低于30K，实现了高效率、低温升和高功率密度的设计目标，论证了方案的可行性。
关键词：电动客车；驱动电机；扁线绕组；高效率；低温升；高功率密度
中图分类号：U469.72；TM351 文献标志码：A DOI：10.15917/j.cnki.1006-3331.2026.04.007
Design of the High-power Large-torque Hairpin Motor of the Electric Buses
PAN Daisong,ZHU He,XIA Xianbao,WEI Xiaoxiang
Abstract: To meet the specific requirements of pure electric buses,the authors design a high-power,high-torque hairpin winding motor.They focus on core technical solutions,including the hairpin winding configuration,the water-oil composite cooling method,and key manufacturing processes.The simulation verification results show that the motor achieves a peak torque of 2500N·m,a maximum efficiency of over 98%,and a temperature rise less than 30 K under rated conditions.These results demonstrate that the design attains the objectives of high efficiency,low temperature rise,and high power density,thereby validating the feasibility of the proposed solution.
Key words: electric bus; drive motor; hairpin winding; high efficiency; low temperature rise; high power density
