Summary of Research on Key Technologies and Energy Management of Electro-Hydraulic Hybrid Powertrain

LIU Huanlong

doi:10.3969/j.issn.0258-2724.20211011

Volume 59 Issue 3

Jun. 2024

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Journal of Southwest Jiaotong University > 2024 > 59(3): 600-614.

LIU Huanlong. Summary of Research on Key Technologies and Energy Management of Electro-Hydraulic Hybrid Powertrain[J]. Journal of Southwest Jiaotong University, 2024, 59(3): 600-614. doi: 10.3969/j.issn.0258-2724.20211011

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LIU Huanlong. Summary of Research on Key Technologies and Energy Management of Electro-Hydraulic Hybrid Powertrain[J]. Journal of Southwest Jiaotong University, 2024, 59(3): 600-614. doi: 10.3969/j.issn.0258-2724.20211011

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Summary of Research on Key Technologies and Energy Management of Electro-Hydraulic Hybrid Powertrain

doi: 10.3969/j.issn.0258-2724.20211011

LIU Huanlong^{1, 2
,}

1.
Engineering Research Center of Advanced Drive Energy Saving Technologies, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China
2.
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 14 Dec 2021
Rev Recd Date: 19 Apr 2022

Available Online: 13 May 2023

Publish Date: 11 May 2022

Abstract

Abstract

The existing hybrid drive technology is mainly based on the hybrid power of oil electricity or liquid, and it aims to improve the energy utilization rate of conventional fuel vehicles and reduce fuel consumption and emissions. Based on the high power density and energy regeneration advantages of hydraulic technology, the electro-hydraulic hybrid powertrain can achieve efficient energy utilization within the full-speed operating range, increase the power density of pure electric drive system, and effectively improve the driving range of electric vehicles and cycling life of batteries. This paper summarizes the progress, current situation, and development trend of research on electro-hydraulic hybrid powertrain configuration, energy recovery technology, energy release mode, and control strategy and analyzes the feasibility and application prospect of using electro-hydraulic hybrid configuration and advanced energy management strategy to improve the power performance and energy utilization rate of pure electric vehicles. According to the existing research results, the vehicle equipped with an electro-hydraulic hybrid powertrain can reduce energy consumption by about 40% at most, which has significant advantages in efficient energy utilization. For an electro-hydraulic hybrid powertrain, hydraulic energy regeneration, coupling, and release are closely related to driving scenarios and motor operating conditions. The research should focus on solving key technologies such as power coupling, regenerative braking, and energy management, so as to improve the overall performance of the powertrain, especially the power density and energy-saving characteristics.
- electro-hydraulic hybrid powertrain,
- power hybrid,
- regenerative braking,
- efficient utilization,
- energy management strategy

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References(84)

References

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Summary of Research on Key Technologies and Energy Management of Electro-Hydraulic Hybrid Powertrain

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Summary of Research on Key Technologies and Energy Management of Electro-Hydraulic Hybrid Powertrain

doi: 10.3969/j.issn.0258-2724.20211011

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通讯作者: 陈斌, bchen63@163.com

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