METHOD FOR TESTING AT LEAST ONE BATTERY CELL STACK WITH REGARD TO THE POSITION OF BATTERY CELL LAYERS
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United States of America Patent
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Issued Date -
May 9, 2024
app pub date -
Nov 4, 2023
filing date -
Nov 4, 2022
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Abstract
A method for testing a stack of multiple battery cells, each comprising an anode, a cathode, and a separator as types of battery cell layers, wherein the separator is arranged between the anode and the cathode. In a first test step, it is checked whether the edges of the battery cell layers are within a first tolerance range, wherein the battery cells to which this applies are determined to be usable battery cells. Several of the usable battery cells are stacked to the battery cell stack. The battery cell stack is irradiated by X-rays. Via the X-rays, positions of those edges of a type of battery cell layers are determined which delimit at least two of the corners of these battery cell layers, checking whether the greatest distance between the equally located edges of each of the battery cell layers of the selected type is within a second tolerance range.
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