Folding Apparatus for Terrace, Battery Cell and Manufacturing Method Thereof

A folding apparatus for a terrace of a cell case is disclosed. In some implementations, the apparatus includes: a stripper including an upper stripper and a lower stripper disposed to face each other to support both sides of the terrace of the cell case; a lower mold for supporting the terrace; and an upper mold for folding the terrace to form a folded portion on the terrace, wherein the upper mold enters a folding space formed between the lower mold and the lower stripper to fold the terrace.