Patent ID: 9692034
Date: 2017-06-27
CPC Classifications: H01M,Y02E

Claim:
1. A secondary battery comprising: an electrode assembly comprising a first electrode plate, a second electrode plate and a separator located between the first electrode plate and the second electrode plate; a case accommodating the electrode assembly; a cap plate sealing the case; a first collector plate comprising a first vertical part electrically connected to the first electrode plate, a first horizontal part bent from the first vertical part and extending between the electrode assembly and the cap plate, and a first protrusion protruding towards the electrode assembly from the first horizontal part; and a first electrode terminal electrically connected to the first collector plate and extending through the cap plate, the first electrode terminal having a body exposed from the cap plate and an extension part extending away from the body, wherein the extension part has a coupling opening accommodating the first protrusion and wherein the first vertical part, the first horizontal part and the first protrusion directly contact the extension part, wherein the first electrode terminal comprises: a first terminal body passing through the cap plate; and a first terminal extension part extending perpendicularly from a lower portion of the first terminal body and located below the first horizontal part of a first collector plate.