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US 12,725,841 B2Granted
Stack cell for easy confirmation of separator folding, separator inspection device and inspection method
AssigneeLG Energy Solution, Ltd.
InventorsJoon Sup Kang, Nak Gi Sung, Sung Tae Kim
Life of this patent
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Abstract
A stack cell for easy confirmation of separator folding, includes a plurality of electrodes, a separator disposed between two adjacent electrodes, and a mark formed of a radio-opaque material through which no radiation ray is transmitted, and provided at an edge region of the separator, where the folding of the separator can be easily determined through the position information of the mark through which no radiation ray is transmitted.
Claims14
A stack cell comprising:
- a plurality of electrodes;
- a separator disposed between two adjacent electrodes;
- and
- a mark formed of a radio-opaque material through which no radiation ray is transmitted, and provided at an edge region of the separator,
- wherein the mark is provided so that when the edge region of the separator is folded, the mark is folded together with the edge region of the separator.
2 more elements
A separator inspection method comprising:
- a step (a) of irradiating a stack cell including a separator in which a mark formed of a radio-opaque material is provided at an edge region with radiation rays;
- a step (b) of obtaining an image of the radiation ray-irradiated separator;
- and
- a step (c) of inspecting folding of the separator by comparing the position information of the mark pre-formed on the separator with the position information of the mark shown in the obtained image.
1 more element
Dependencies are inferred from the claim text.