Physics-based Model of Lithium-ion Batteries Running on a Circuit Simulator

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  • 回路シミュレータ上で動作するリチウムイオン電池物理モデル
  • カイロ シミュレータ ジョウ デ ドウサ スル リチウムイオン デンチ ブツリ モデル

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Abstract

<p>The authors developed a physics-based equivalent circuit model of a lithium-ion battery (LIB) whose parameters are continually updated, reflecting the theoretical calculation results of the Butler-Volmer equation, diffusion equations of the lithium-ion and lithium, and Nernst equations of the liquid and solid phases. The developed model was applied to the charge/discharge simulations of a LIB, and the experimental and simulated results of constant current discharges and pulsed-charge/discharge were found to be in excellent agreement. In particular, using the developed model, analyzing transient responses of the LIB derived from the transition of the electric double layer charging to the electrode reaction is possible. These results demonstrate that the electrochemical performance of a LIB can be calculated on a circuit simulator using the developed model.</p>

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