农业机械学报2025，Vol.56Issue(12)：99-109,11.DOI:10.6041/j.issn.1000-1298.2025.12.008
串联式混合动力拖拉机全生命周期成本研究
Life Cycle Costs of Series Hybrid Tractors
摘要
Abstract
Aiming to investigate the impact of battery capacity configuration on system efficiency and life cycle cost(LCC)for high-horsepower hybrid tractors,thereby addressing the research gap in battery capacity optimization design for hybrid tractors,taking a 190 kW series hybrid tractor as the research object,an LCC evaluation system encompassing equipment procurement,battery replacement,and fuel consumption was established.A two-level battery capacity optimization method combining enumeration and dynamic programming(DP)was proposed:the outer layer investigated the influence of battery capacity on LCC under time-varying weights of energy and battery prices through global search via enumeration method,while the inner layer employed DP algorithm for optimal control of energy management strategies in hybrid tractors.A tractor simulation platform was developed by using Matlab/Simulink to quantitatively analyze the coupling mechanism between battery capacity and energy management strategies on system efficiency throughout the tractor's lifecycle.Simulation results indicated that within the 2.2～110 A·h battery capacity range,increasing battery capacity benefited fuel consumption reduction and battery lifespan extension;the 24.2 A·h configuration represented the fuel consumption inflection point,beyond which capacity increase yielded minimal efficiency improvement;when battery capacity reached 52.8 A·h,no replacement was required based on cycle life,but the nonlinear battery capacity-LCC relationship showed 22 A·h configuration minimized LCC to 3.909 3 million yuan.The proposed"technical parameters-life cycle cost"optimization framework established theoretical paradigms and provided valuable references for hybrid system design in agricultural machinery.关键词
混合动力拖拉机/全生命周期成本/电池容量配置/动态规划/能量管理策略Key words
hybrid tractors/life cycle cost/battery capacity configuration/dynamic programming/energy management strategy分类
农业科技引用本文复制引用
WANG Jian,HE Dongsheng,ZHU Yahui,YIN Bifeng,HUANG Youlin..串联式混合动力拖拉机全生命周期成本研究[J].农业机械学报,2025,56(12):99-109,11.基金项目
广西科技重大专项基金项目(2024AA03005) （2024AA03005）
