Secondary Battery for Internal Short-Circuit Test and Manufacturing Method and Testing Method Thereof

A method for manufacturing a secondary battery for an internal short-circuit test, comprising:

• preparing a main first current collector, on which a first non-coating surface is partitioned, to apply a main first coating layer on a surface of the main first current collector and remove the main first coating layer applied on the first non-coating surface, thereby manufacturing a main first electrode;
• applying a second coating layer on a surface of the second current collector to manufacture a second electrode;
• cutting a portion of a surface corresponding to the first non-coating surface when disposed between the main first electrode and the second electrode to manufacture a main separator having a through-hole;
• manufacturing an auxiliary separator that blocks or open the through-hole to detachably attach the auxiliary separator to the main separator while covering the through-hole;
• and
• manufacturing an auxiliary first electrode that connects or disconnects the main first current collector to or from the second electrode so that an internal short circuit between the main first current collector and the second electrode occurs through the through-hole to detachably attach the auxiliary first electrode to the first non-coating surface.