Design and Research on Electro-Hydraulic Drive and Energy Recovery System of the Electric Excavator Boom

Lin Li, Tiezhu Zhang, Kaiwei Wu, Liqun Lu, Lianhua Lin and Haigang Xu
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Lin Li: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Tiezhu Zhang: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Kaiwei Wu: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Liqun Lu: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Lianhua Lin: Shandong Shifeng (Group) Co., Ltd., Liaocheng 252800, China
Haigang Xu: Shandong Shifeng (Group) Co., Ltd., Liaocheng 252800, China

Energies, 2022, vol. 15, issue 13, 1-17

Abstract: The hydraulic accumulator has the advantages of high power density, fast response, stable operation and high cost performance. However, compared with the electric energy storage method, the hydraulic accumulator has low energy density and large pressure fluctuation while absorbing and discharging energy, which severely limits its application in hydraulic excavators. To improve the potential energy loss of the boom during the lowering process, an electro-hydraulic drive and energy recovery system for excavator booms (EHDR-EEB) based on a battery and accumulator is proposed. As a result, a simulation model of the electro-hydraulic drive and energy management strategy of a 1.6 t pure electric hydraulic excavator is built to investigate the energy regeneration and utilization. The simulation outcomes show that the potential energy recovery rate is as high as 92%. This research on EHDR-EEB makes a significant contribution to the economic improvement of electric hydraulic excavators.

Keywords: electric excavator boom; electro-hydraulic drive and energy recovery system; energy regeneration; energy management strategy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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