Integrated Intelligent Energy ›› 2025, Vol. 47 ›› Issue (8): 40-48.doi: 10.3969/j.issn.2097-0706.2025.08.005

• Coordination of Energy Storage Technologies • Previous Articles     Next Articles

Vehicle-vehicle energy mutual aid control strategy for electric vehicles

ZHAI Shuo(), ZHANG Zhiyuan(), WANG Weisheng(), TIAN Runduo(), ZHANG Weizhi(), WANG Rui*()   

  1. College of Information Science and Engineering, Northeastern University, Shenyang 110167, China
  • Received:2024-04-28 Revised:2024-06-15 Published:2025-08-15
  • Contact: WANG Rui E-mail:2270989@stu.neu.edu.cn;neu_zzy@yeah.net;2271026@stu.neu.edu.cn;2319854377@qq.com;749740539@qq.com;wangrui@ise.neu.edu.cn
  • Supported by:
    National Key R&D Program of China(2018YFA0702200);National Natural Science Foundation of China(U20A20190)

Abstract:

With the transformation of global energy structure, electric vehicles(EVs) are becoming a trend in transportation industry due to their advantages in energy saving and emission reduction. However, the charging problems worry the EV consumers. Energy mutual aid devices are proposed for those EVs which cannot get energy replenishment from any surrounding EV charging pile when they are in low-batter state. In such a case,EVs nearby with sufficient energy can fuel those run out of power. For the problem that the output voltage of an EV power battery is too low to charge another EV directly, a quadratic boost converter and its equation of state are constructed. The converter not only lights the weight the device, but also provides a wide voltage gain to meet the need of fast charging of all EVs. To address the shortcomings of the conventional voltage mode controller of the quadratic boost converter, an improved voltage mode controller is proposed which avoids the trade-off between transient-state and steady-state performance due to the integration link of the conventional voltage mode controller. Also, the improved controller can make the controlled system output qualified DC power with less feedbacks. Simulation results show that when the voltage of the vehicle supplying power changes, the output voltage of the vehicle-vehicle energy mutual aid device can quickly stabilize around 300, 500, and 800 V, and provide 30 kW charging power that can meets the fast charging demands.

Key words: renewable energy, electric vehicles, vehicle-vehicle energy mutual aid, charging pile, quadratic boost converters, voltage mode controller

CLC Number: