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SYSTEMS, METHODS AND COMPUTER READABLE MEDIA TO MODEL KINETIC PERFORMANCE OF RECHARGEABLE ELECTROCHEMICAL DEVICES
SYSTEMS, METHODS AND COMPUTER READABLE MEDIA TO MODEL KINETIC PERFORMANCE OF RECHARGEABLE ELECTROCHEMICAL DEVICES
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机译:用于建模可充电电化学装置运动性能的系统,方法和计算机可读介质
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摘要
A system includes an electrochemical cell, monitoring hardware, and a computing system. The monitoring hardware samples performance characteristics of the electrochemical cell. The computing system determines cell information from the performance characteristics. The computing system also analyzes the cell information of the electrochemical cell with a Butler- Volmer (BV) expression modified to determine exchange current density of the electrochemical cell by including kinetic performance information related to pulse-time dependence, electrode surface availability, or a combination thereof. A set of sigmoid-based expressions may be included with the modified-BV expression to determine kinetic performance as a function of pulse time. The determined exchange current density may be used with the modified-BV expression, with or without the sigmoid expressions, to analyze other characteristics of the electrochemical cell. Model parameters can be defined in terms of cell aging, making the overall kinetics model amenable to predictive estimates of cell kinetic performance along the aging timeline.
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