Patent ID: 9601744
Date: 2017-03-21
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A secondary battery comprising: a case; an electrode assembly housed in the case and comprising a first electrode, a second electrode, and a separator between the first electrode and the second electrode, the first electrode having a coating portion coated with a first active material and a non-coating portion absent the first active material on an edge portion of the coating portion; a first collector plate; and a second collector plate, wherein the first collector plate, the second collector plate, and the non-coating portion are enmeshed together to cover the edge portion of the coating portion at a weld, and wherein the weld has a width and a length, the width of the weld being less than the length of the weld, the length of the weld extending along a length of an edge of the first electrode, the length of the edge of the first electrode being greater than a width of the edge of the first electrode.