Abstract: Light electric trucks driven by wheel hub have broad application prospects in intercity logistics transportation, but wheel hub motors still face the problems of heat dissipation and low control accuracy in automotive applications. Firstly, by comparing the advantages and disadvantages of different driving forms of pure electric vehicles, this paper points out the limitations of the current technological development of pure electric vehicles. Secondly, by introducing the industry-related scholars in the wheel hub motor cooling and drive control research work, and the characteristics and shortcomings of the research in this field are summarized. Finally, the design of wheel hub motor drive control system for light electric trucks is proposed, and a new cooling system is designed based on Arduino open source electronic platform to solve the heat dissipation problem of hub motor. The drive control system adopts self-developed control algorithms, combined with proportion-integraldifferential (PID) and linear quadratic regulator (LQR) dual algorithm closed-loop feedback control to achieve precise differential control; The cooling system adopts a double-layer cooling scheme combining liquid cooling and air cooling, which can achieve dynamic cooling power adjustment and improve the heat dissipation efficiency of the cooling system.

Key words: wheel hub motor; cooling and driving; system design; light electric truck

摘要： 轮毂驱动式轻型电动货车在城际间的物流运输上具备广阔应用前景，但轮毂电机在汽 车应用上仍面临散热困难和控制精度不高的问题。研究首先通过对比纯电动汽车不同驱动形 式的优缺点，指出当前纯电动汽车的技术发展局限性；其次，通过介绍行业相关学者在轮毂 电机冷却与驱动控制方面的研究工作，总结该领域的研究特点及不足；最后，提出轻型电动 货车用轮毂电机驱动控制系统设计，并基于 Arduino 开源电子平台设计一套解决轮毂电机散 热难题的新型冷却系统。其中驱动控制系统采用自研发控制算法，联合比例-积分-微分（PID） 加线性二次调节器（LQR）双算法闭环反馈控制实现精准差速控制；冷却系统采用液冷结合 风冷双层级式冷却方案，可以实现动态冷却功率调节，提升冷却系统散热效率。

关键词: 轮毂电机；冷却与驱动；系统设计；轻型电动货车