Rechargeable battery with cap plate having a protrusion and terminal plate having a longitudinal compression

摘要

Embodiments of a rechargeable battery include: an electrode assembly including first and second leads; a case for receiving the electrode assembly; a cap plate covering an opening of the case, connected to the first lead, and including a terminal hole; and an insulating terminal plate provided between the cap plate and the electrode assembly, connected to the second lead, and an electrode end installed in the terminal hole. The cap plate may include a protrusion oriented toward the electrode assembly. The terminal plate may include an extended unit extended to an external part of the protrusion with respect to the terminal hole and separated from the protrusion. The protrusion and the extended unit may be provided on a plane in parallel with the opening. A first distance between the terminal hole and the protrusion may be shorter than a second distance between the terminal hole and the extended unit.

主权项

1. A rechargeable battery comprising:
an electrode assembly including a first lead and a second lead; a case for receiving the electrode assembly that has a side wall; a cap plate covering an opening of the case, connected to the first lead, and including a terminal hole; and a terminal plate provided between the cap plate and the electrode assembly in an insulated manner, connected to the second lead, and connected to an electrode end installed in the terminal hole, wherein the cap plate includes a protrusion that is protruded toward the electrode assembly, wherein the terminal plate includes an extended unit extended to an external part of the protrusion with respect to the terminal hole and separated from the protrusion, wherein the protrusion and the extended unit are provided on a plane in parallel with the opening, and wherein a first distance that is the shortest distance between the terminal hole and the protrusion is shorter than a second distance that is between the terminal hole and an end of the extended unit and wherein the extended unit is spaced from the protrusion so as to be interposed between the protrusion and the side wall of the case.