CASE FOR SECONDARY BATTERY, SECONDARY BATTERY INCLUDING THE CASE FOR SECONDARY BATTERY, METHOD FOR MANUFACTURING THE CASE FOR SECONDARY BATTERY

Disclosed are a case for secondary battery, a secondary battery including the case for secondary battery, and a method for manufacturing the case for secondary battery.According to the present invention, a gas discharge device formed in the case for secondary battery may include a recess part, wherein a cut cutoff area may be formed in the recess part, and a passage through which a gas is discharged through the cutoff area of the recess part when a pressure of the empty space in the body part exceeds a predetermined value may be formed.