能源研究与管理2026，Vol.18Issue(1)：80-88,9.DOI:10.16056/j.2096-7705.2026.01.010
全钒液流电池双螺旋流道顺流与逆流性能分析
Performance Study on Co-current and Counter-current of Double Spiral Flow Channels in Vanadium Redox Flow Batteries
摘要
Abstract
In order to improve the energy efficiency of vanadium redox flow battery,the pressure,velocity and concentration distribution inside the battery were analyzed by numerical simulation when the electrolyte in the double spiral flow channel was in co-current and counter-current flow.The results show that,when the flow rate is the same,the pressure gradient and flow velocity of the counter-current flow are relatively high only at the inlet and outlet sections,which in turn triggers flow"short-circuiting".This phenomenon causes the electrolyte that should fully participate in mass transfer to be diverted,with a portion of it prematurely exiting the flow channel and discharging out of the electrode,leading to insufficient reactants in the regions beyond the inlet and outlet sections and significant concentration polarization.However,the electrolyte pressure drop is significantly lower than that of the co-current flow.When the pump power is the same,the electrolyte flow rate of the counter-current flow is larger,which enhances the electrolyte flow velocity and the uniformity of reactant concentration distribution inside the battery.Consequently,the uniformity factor of the counter-current flow is 0.40％-1.40％higher than that of the co-current flow,with a 0.16％-2.52％improvement in energy efficiency.Meanwhile,the superiority of counter-current flow is more pronounced under low pumping power conditions,which indicates that the performance improvement resulting from the increased flow rate outweighs the performance degradation caused by flow"short-circuiting".This design idea provides a reference for the flow channel design of flow battery.关键词
全钒液流电池/数值模拟/能量效率/流道/双螺旋Key words
vanadium redox flow battery(VRFB)/numerical simulation/energy efficiency/flow channel/double spiral分类
信息技术与安全科学引用本文复制引用
姬瑞雨,姜鑫,谭祥强,王立敏,曹磊,王硕林..全钒液流电池双螺旋流道顺流与逆流性能分析[J].能源研究与管理,2026,18(1):80-88,9.基金项目
鄂尔多斯市国家可持续发展议程创新示范区建设科技支撑(KCX2024007) （KCX2024007）
鄂尔多斯市重点研发计划(YF20240015) （YF20240015）
鄂尔多斯市科技"突围"工程"揭榜挂帅"重大项目(JB20251428) （JB20251428）
