混合动力系统架构分析与优化

Analysis and Optimization of Hybrid Powertrain Architecture

随着新能源汽车的迅猛发展,混合动力汽车受到广泛关注并快速占领市场。为了优化混合动力汽车动力架构,通过剖析串联式混合动力汽车与并联式混合动力汽车的动力结构,研究其在不同工况下的能量传递路径和控制逻辑,发现其存在能量效率低与结构复杂等问题。通过减少动力架构的能量转换路径并利用行星齿轮组功率分流等特性,优化设计了一种混合动力架构控制逻辑,研究表明其具备更高能量效率,同时结构更简单,提升能量效率的同时也较低了开发制造成本。

With the rapid development of new energy vehicles,hybrid vehicles have attracted more and more attention and quickly occupy the market.In order to optimize the power architecture of hybrid electric vehicles,this paper analyzes the power architecture of series-connected hybrid electric vehicles and series-parallel hybrid electric vehicles,studies the energy transfer paths,working modes and control logic under various working conditions,and finds that there are problems such as low energy efficiency and complex architecture.Therefore,this paper optimally designs a hybrid architecture and its control logic by reducing the energy conversion path of the power architecture and taking advantage of the characteristics of planetary gear group power shunt,etc.The results show that it not only has higher energy efficiency but a simpler architecture than the series-parallel hybrid architecture,which reduce development costs.