Review of Energy-Saving Technologies for Electric Vehicles, from the Perspective of Driving Energy Management

Deping Wang, Changyang Guan, Junnian Wang (), Haisheng Wang, Zhenhao Zhang, Dachang Guo and Fang Yang
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Deping Wang: Research and Development Institute, China FAW Group Co., Ltd., Changchun 130011, China
Changyang Guan: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Junnian Wang: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Haisheng Wang: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Zhenhao Zhang: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Dachang Guo: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Fang Yang: Research and Development Institute, China FAW Group Co., Ltd., Changchun 130011, China

Sustainability, 2023, vol. 15, issue 9, 1-17

Abstract: The driving range of electric vehicles (EVs) is still an important factor restricting their development. Although the rising battery energy density has reached a bottleneck, which is a key constraint, the drive energy management strategy also has a significant effect and can improve the driving range of EVs, since wheel traction torque control can directly optimize the driving energy consumption of EVs. In order to comprehensively analyze the current research status of driving energy management and clarify its development direction, this review focuses on the driving energy management strategy of EVs and systematically summarizes the configurations and power distribution strategies of the dual-motor coupling drive system (DCDS), as well as torque vectoring control strategies of the decentralized drive system. Firstly, driving energy losses are analyzed in detail, which mainly include electric loss, tire slip energy dissipation, and the power of cornering resistance. Secondly, typical configurations of the DCDS are introduced, and the power distribution strategies of the DCDS are comprehensively reviewed. Finally, as an interesting energy-saving technology, energy-saving torque vectoring, generally applied to decentralized drive systems, is reviewed in detail in terms of its energy-saving pathways and control strategies, which are classified as front-and-rear torque vectoring and left-and-right torque vectoring. Research findings indicate that the driving range of EVs can be effectively increased by applying a driving energy management strategy based on several novel multi-power source drive systems. The development of a driving energy management strategy and the required novel drive systems will be a valuable and crucial direction for further energy conservation in EVs.

Keywords: electric vehicle; energy efficiency; power management; independent drive; torque distribution control (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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