河南科技大学学报（自然科学版）2025，Vol.46Issue(6)：9-19,11.DOI:10.15926/j.cnki.issn1672-6871.2025.06.002
融合经济性的电池分级热管理策略应用
Application of Battery Hierarchical Thermal Management Strategy with Integrated Economic Optimization
摘要
Abstract
To address the dual demand for thermal safety and energy efficiency optimization of power batteries in new energy vehicles,a 23 Ah prismatic lithium iron phosphate(LiFePO4)cell was selected as the research object.A titanium dioxide nanofluid pulsating heat pipe(PHP)was employed as the core cooling device,and a comprehensive thermal management system based on temperature-graded regulation and an economy-oriented coupling criterion was proposed and implemented.This system ensures battery thermal safety by dynamically adjusting fan speed according to real-time temperature monitoring,while introducing an economy criterion once the temperature requirement is satisfied,thereby achieving an optimal balance between cooling performance and energy consumption.Relying on a self-developed experimental platform,tests were carried out on both single cells and battery modules under different ambient temperatures(15℃,25℃,and 35℃).To simulate low-power operating conditions of electric vehicles,constant discharge rates of 0.5 C,1 C,and 1.5 C as well as variable-rate cycles were adopted.The results show that the proposed system can maintain the maximum temperature below 45℃,with the economy index reaching up to 91.7%,thereby demonstrating significant energy-saving advantages while ensuring thermal safety under low-power operating conditions.关键词
新能源汽车/动力电池/PHP/热管理策略/分级调控Key words
new energy vehicles/power battery/PHP/thermal management strategy/hierarchical control分类
能源科技引用本文复制引用
陈萌,唐东..融合经济性的电池分级热管理策略应用[J].河南科技大学学报（自然科学版）,2025,46(6):9-19,11.基金项目
国家自然科学基金项目(52272394) （52272394）
中央高校基本科研业务费专项(2572023CT14-03) （2572023CT14-03）
