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SYSTEMS, METHODS AND COMPUTER READABLE MEDIA FOR MODELING CELL PERFORMANCE FADE OF RECHARGEABLE ELECTROCHEMICAL DEVICES
SYSTEMS, METHODS AND COMPUTER READABLE MEDIA FOR MODELING CELL PERFORMANCE FADE OF RECHARGEABLE ELECTROCHEMICAL DEVICES
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机译:用于建模可充电电化学装置的电池性能衰减的系统,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 periodically samples performance characteristics of the electrochemical cell. The computing system determines cell information from the performance characteristics of the electrochemical cell. The computing system also develops a mechanistic level model of the electrochemical cell to determine performance fade characteristics of the electrochemical cell and analyzing the mechanistic level model to estimate performance fade characteristics over aging of a similar electrochemical cell. The mechanistic level model uses first constant-current pulses applied to the electrochemical cell at a first aging period and at three or more current values bracketing a first exchange current density. The mechanistic level model also is based on second constant-current pulses applied to the electrochemical cell at a second aging period and at three or more current values bracketing the second exchange current density.
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