计算锂离子电池的开路电压与差分电压
Application ID: 141491
How the open-circuit voltage (OCV) of a lithium-ion battery varies with the state of charge is governed by various physical properties such as the thermodynamics of the electrode reactions, the relative capacities of the electrode materials, and the amount of cyclable lithium, but also on the chosen voltage boundaries set by the battery engineer.
This tutorial shows how the OCV curve of a lithium-ion battery can be computed based on the abovementioned properties. It is also demonstrated how to plot the differential voltage (dVdQ) curves for the individual electrode materials, and the cell.
OCV and dVdQ curves are modeled both for a pristine battery and for an aged battery that has lost 20% of cyclable lithium due to parasitic reactions.
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