Accelerated Battery Lifetime Simulations Using Adaptive Inter-Cycle Extrapolation Algorithm
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United States of America Patent
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Issued Date -
Sep 21, 2023
app pub date -
Mar 16, 2023
filing date -
Mar 18, 2022
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Abstract
Disclosed is a method for manufacturing an electrochemical cell wherein the cell undergoes degradation that results in loss of active material and cation inventory during charging phase(s) of cell cycles. The method comprises: selecting at least one cell component from electrolytes, cathode active materials, and anode active materials; sequentially calculating a cell capacity at an end of each of a plurality of cell cycles based on total cyclable cations, accessible storage sites in each electrode, and the cell component(s) using a degradation model based on porous-electrode theory and having degradation pathway(s), wherein the cell cycles are initialized based on a rate of degradation over previous cycles and wherein a time at which to simulate the next cycle is chosen based on the rate of degradation over the previous cycles; and predicting end of life of the cell based on one of the calculated cell capacities being less than a percentage of nominal capacity.
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