基于有限差分法的二维锂离子电池电热性能模拟
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摘要
当前世界对清洁能源的需求日益增大,其中锂离子电池有高能量密度、高工作电压、低自放电以及高稳定性等优点,是满足清洁能源要求的原料之一。由于电池失效或者过热现象都会产生起火等灾难性后果,因此预测电池的电热特性具有重要的意义。建立锂离子电池二维数学模型,利用电学模型的泊松方程以及热学模型的热传递方程,基于有限差分法模拟了锂离子电池在充电过程中的电热性能,分析了锂离子电池的电势密度、电流密度以及温度场分布,为锂离子电池的设计应用提供理论依据。
Lithium-ion battery with its benefit of high energy density,high voltage,low self-discharge rate and good stability has been treated as cleaner energy source to satisfy increasing demands on cleaner energy.It is crucial to predict battery performance because any failure or over-heating would result in extreme situations such as thermal runaway,which can lead to a catastrophic failure and even fire.In this paper,the electrothermal behaviour of lithium-ion battery during the charging process has been simulated by using the two-dimensional mathematical model,which consists of the Poisson equations for electrical modelling and the heat transfer equation for thermal modelling.The potential,current density and temperature distributions of lithium-ion battery with different capacities have been generated and analysed,thus to provide theoretical foundation for the design application of lithium-ion battery.
Lithium-ion battery with its benefit of high energy density,high voltage,low self-discharge rate and good stability has been treated as cleaner energy source to satisfy increasing demands on cleaner energy.It is crucial to predict battery performance because any failure or over-heating would result in extreme situations such as thermal runaway,which can lead to a catastrophic failure and even fire.In this paper,the electrothermal behaviour of lithium-ion battery during the charging process has been simulated by using the two-dimensional mathematical model,which consists of the Poisson equations for electrical modelling and the heat transfer equation for thermal modelling.The potential,current density and temperature distributions of lithium-ion battery with different capacities have been generated and analysed,thus to provide theoretical foundation for the design application of lithium-ion battery.
引文
[1]Kwon K H,Shin C B,Hang T H,&Kim C S.A two-dimensional modeling of lithium-polymer battery[J].Journal of Power Sources,2006,163(1):151-157.
[2]Scrosati B,Carche J.Lithium batteries:Status,prospects and future[J].Journal of Power Sources,2010(195):2419-2430.
[3]Liu J,Kunz M,Chen K,Tamura N,Richardson T J.Visualization of charge distribution in a Lithium battery electrode[J].Journal of Physical Chemistry Letter,2010,1(14):2120-2123.
[4]Lu L G,Han X B,Li J Q,Hua J F,Quyang M.A review on the key issues for Lithium-ion battery management in electric vehicles[J].Journal of Power Sources,2013(226):272-288.
[5]Tiedemann W,Newman J.Nonumiform current and potential distribution in composite sheet type battery electrodes[J].Journal of Electrochemical Society,1979,126(8):C323.
[6]Kim S U,Yi J,Shin C B,Han T,Park S.Modeling the dependence of the discharge behavior of a Lithium-ion battery on the environmental temperature[J].Journal of Electrochemical Society,2011,158(5):A611-A618.
[7]Kim U S,Yi J,Shin C B,Han T,Park S.Modeling the thermal behavior of a lithium-ion battery during charge[J].Journal of Power Sources,2011,196(11):5115-5121.
[2]Scrosati B,Carche J.Lithium batteries:Status,prospects and future[J].Journal of Power Sources,2010(195):2419-2430.
[3]Liu J,Kunz M,Chen K,Tamura N,Richardson T J.Visualization of charge distribution in a Lithium battery electrode[J].Journal of Physical Chemistry Letter,2010,1(14):2120-2123.
[4]Lu L G,Han X B,Li J Q,Hua J F,Quyang M.A review on the key issues for Lithium-ion battery management in electric vehicles[J].Journal of Power Sources,2013(226):272-288.
[5]Tiedemann W,Newman J.Nonumiform current and potential distribution in composite sheet type battery electrodes[J].Journal of Electrochemical Society,1979,126(8):C323.
[6]Kim S U,Yi J,Shin C B,Han T,Park S.Modeling the dependence of the discharge behavior of a Lithium-ion battery on the environmental temperature[J].Journal of Electrochemical Society,2011,158(5):A611-A618.
[7]Kim U S,Yi J,Shin C B,Han T,Park S.Modeling the thermal behavior of a lithium-ion battery during charge[J].Journal of Power Sources,2011,196(11):5115-5121.