大容量液流电池系统LCFBS(Large Capacity Flow Battery System)的内电阻特性与锂电池、铅蓄电池有较大差异。基于100 k W全钒液流电池系统的试验数据,采用多元高次多项式拟合的方法得到内阻的精确解析式,再根据电动势和荷电状态SOC(Sta...大容量液流电池系统LCFBS(Large Capacity Flow Battery System)的内电阻特性与锂电池、铅蓄电池有较大差异。基于100 k W全钒液流电池系统的试验数据,采用多元高次多项式拟合的方法得到内阻的精确解析式,再根据电动势和荷电状态SOC(State Of Charge)的理论解析式,构建了大容量液流电池系统的数学模型;利用MATLAB/Simulink搭建了具有一定精度的容量液流电池系统单元的仿真模型,通过仿真验证了数学模型的精确度,使内阻的相对误差控制在4.5%以内。展开更多
在液流电池管路系统的设计中,选择粗长的管道虽然有利于旁路电流和泵功的同步下降,但这将导致系统体积的增大。为了实现液流电池系统效率与紧凑性之间的平衡,提出了量化管路系统紧凑性的参数,并在此基础上提出了适用于大型、多堆电池系...在液流电池管路系统的设计中,选择粗长的管道虽然有利于旁路电流和泵功的同步下降,但这将导致系统体积的增大。为了实现液流电池系统效率与紧凑性之间的平衡,提出了量化管路系统紧凑性的参数,并在此基础上提出了适用于大型、多堆电池系统的管路设计方法。以180 k W/560 V全钒液流电池系统为例,展示了多级并联管路的设计过程与结果,计算并比较了不同电堆数和紧凑性参数下的最佳系统效率。展开更多
Redox flow batteries have gained wide attention at home and abroad as a long-duration energy storage technology with the advantages of high safety,long lifespan,mutual independence of capacity and power,and easy recyc...Redox flow batteries have gained wide attention at home and abroad as a long-duration energy storage technology with the advantages of high safety,long lifespan,mutual independence of capacity and power,and easy recycling.However,the current battery management technology faces significant challenges,and there is room for development.Digital twin(DT),as a technology that collectively senses,evaluates,predicts,and optimizes characteristics,is promising to contribute to redox flow batteries’operation,maintenance,and management.This paper begins with a brief description of redox flow batteries,followed by a short explanation of the concept and application of DTs.DTs have already made some progress in the field of batteries,and can be applied to solve the problems of redox flow batteries in terms of thermal management and system optimization.Finally,the paper analyzes the combination of redox flow battery and DT architecture,which is expected to contribute to developing DT technology for redox flow batteries.展开更多
文摘大容量液流电池系统LCFBS(Large Capacity Flow Battery System)的内电阻特性与锂电池、铅蓄电池有较大差异。基于100 k W全钒液流电池系统的试验数据,采用多元高次多项式拟合的方法得到内阻的精确解析式,再根据电动势和荷电状态SOC(State Of Charge)的理论解析式,构建了大容量液流电池系统的数学模型;利用MATLAB/Simulink搭建了具有一定精度的容量液流电池系统单元的仿真模型,通过仿真验证了数学模型的精确度,使内阻的相对误差控制在4.5%以内。
文摘在液流电池管路系统的设计中,选择粗长的管道虽然有利于旁路电流和泵功的同步下降,但这将导致系统体积的增大。为了实现液流电池系统效率与紧凑性之间的平衡,提出了量化管路系统紧凑性的参数,并在此基础上提出了适用于大型、多堆电池系统的管路设计方法。以180 k W/560 V全钒液流电池系统为例,展示了多级并联管路的设计过程与结果,计算并比较了不同电堆数和紧凑性参数下的最佳系统效率。
基金Supported by the Special Educating Project of the Talent for Carbon Peak and Carbon Neutrality of University of Chinese Academy of Sciences(E3E56501A2)。
文摘Redox flow batteries have gained wide attention at home and abroad as a long-duration energy storage technology with the advantages of high safety,long lifespan,mutual independence of capacity and power,and easy recycling.However,the current battery management technology faces significant challenges,and there is room for development.Digital twin(DT),as a technology that collectively senses,evaluates,predicts,and optimizes characteristics,is promising to contribute to redox flow batteries’operation,maintenance,and management.This paper begins with a brief description of redox flow batteries,followed by a short explanation of the concept and application of DTs.DTs have already made some progress in the field of batteries,and can be applied to solve the problems of redox flow batteries in terms of thermal management and system optimization.Finally,the paper analyzes the combination of redox flow battery and DT architecture,which is expected to contribute to developing DT technology for redox flow batteries.
