内燃机工程2026，Vol.47Issue(4)：52-59,70,9.DOI:10.13949/j.cnki.nrjgc.2025.04.006
基于排气制动的动力电池荷电状态控制策略
Power Battery State of Charge Control Strategy Based on Exhaust Brake
陈勇 1李西德 1曾献勇 1刘惺 1姜泽军2
作者信息
- 1. 四川化工职业技术学院 机械工程学院,泸州 646300
- 2. 常州易控汽车电子股份有限公司,常州 213000
- 折叠
摘要
Abstract
In view of the defects of the existing series-connected oil-electric hybrid heavy truck's long downhill braking system,a power battery state of charge(SOC)control strategy based on exhaust brake of hybrid heavy trucks was proposed.Different SOC thresholds were set according to the characteristics of lithium batteries.The electric characteristics of the generator in its vehicle-mounted generator set were used to drive the engine to operate.The exhaust brakes were used to consume their feedback braking power and excess power to ensure that feedback braking was operated effectively for a long time,avoiding the risk of degraded braking performance and overcharging of power batteries in long downhill conditions,thereby improving driving safety.MATLAB/Simulink simulation analysis and bench test verification results show that the strategy can ensure that feedback braking is effective for a long time,reduce the frequency of mechanical braking and the operating strength,and is conducive to driving safety.It can realize dynamic adjustment of battery power,effectively avoid overcharging the power battery,and extend the life of the power battery.And it can ensure that the matching error between feedback braking power and power consumption is within±5％.关键词
长下坡工况/动力电池/荷电状态/排气制动/荷电状态阈值Key words
long downhill working conditions/power battery/state of charge(SOC)/exhaust brake/SOC threshold分类
交通工程引用本文复制引用
陈勇,李西德,曾献勇,刘惺,姜泽军..基于排气制动的动力电池荷电状态控制策略[J].内燃机工程,2026,47(4):52-59,70,9.
