Secondary Battery For Testing Internal Short Circuit And Manufacturing Method And Testing Method Therefor

Abstract: The present invention relates to a secondary battery for testing an internal short circuit, comprising: an electrode assembly; and a pouch for accommodating the electrode assembly, wherein the electrode assembly comprises: a main first electrode including a main first current collector and a main first coating layer coated on the remaining surface except for a first non-coated surface partitioned on the main first current collector; a second electrode including a second current collector, and a second coating layer coated on the surface of the second current collector; a main separator arranged between the main first electrode and the second electrode and having a through hole formed at a position corresponding to the first non-coated surface; an auxiliary separator detachably attached to the main separator to block or open the through hole; and an auxiliary first electrode detachably attached to the first non-coated surface and connecting the first non-coated surface of the main first current collector with the second electrode to cause an internal short circuit through the through hole opened during detachment.

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