The first and second side walls include coupling parts to be coupled together when the first and second case bodies are pressed together to form a space to receive a bare cell.

• 第一侧壁和第二侧壁包括接合部分，用于在所述第一壳体主体与第二壳体主体被压合以形成用于容纳裸电池的空间时接合在一起。