COVER FOR A WOUND ELECTRODES ENERGY STORAGE DEVICE

The present disclosure relates to a cover for a wound electrodes energy storage device improved in reliability and durability. The energy storage device includes: an electrode element (110) including an anode plate (142), a separator, and a cathode plate (144); a housing configured to accommodate the electrode element; a terminal plate configured to cover an opened top surface of the housing; and electrode terminals protruding to an outside of the terminal plate and including an anode terminal, a cathode terminal, and two terminal pins. The terminal plate includes a metal member and a sealing member (130) that surrounds a top surface and a bottom surface of the metal member, and an outermost side surface between the top surface and the bottom surface, and the sealing member includes an outer upper horizontal portion, an outer lower horizontal portion, and an outer vertical portion disposed between the housing and the metal member.