Abstract: The present invention relates to a secondary battery including: an electrode assembly; a case opened on one side and configured to accommodate the electrode assembly therein; a vent coupled to the opening of the case; and a first current collecting plate electrically connected to the electrode assembly, in which the first current collecting plate is welded and electrically connected to at least one of the case and the vent.

Abstract: The present disclosure relates to a connector for a bus bar including a bar-shaped finger divided into a central portion, a pair of end portions symmetrically formed on opposite sides of the central portion, and a pair of connecting portions respectively formed between the central portion and the pair of end portions. The connector for a bus bar includes: a plurality of fingers, at least two or more of which are stacked in the thickness direction perpendicular to the longitudinal direction to form one side portion and at least two or more of which are stacked in the thickness direction to form the other side portion disposed opposite to the one side portion; a pair of coil springs, one end and the other end of which is fixed to the one side portion and the other side portion to be arranged at a predetermined distance apart from each other with respect to the central portion of the finger; and a bracket for supporting the one side portion and the other side portion.

Abstract: The present disclosure relates to a connector for a bus bar including a bar-shaped finger divided into a central portion, a pair of end portions symmetrically formed on opposite sides of the central portion, and a pair of connecting portions respectively formed between the central portion and the pair of end portions. The connector for a bus bar includes: a plurality of fingers, at least two or more of which are stacked in the thickness direction perpendicular to the longitudinal direction to form one side portion and at least two or more of which are stacked in the thickness direction to form the other side portion disposed opposite to the one side portion; a pair of coil springs, one end and the other end of which is fixed to the one side portion and the other side portion to be arranged at a predetermined distance apart from each other with respect to the central portion of the finger; and a bracket for supporting the one side portion and the other side portion.