Patent ID: 7951492
Filing Date: 2011-05-31
Classification: H01M,Y02E,Y02P

Abstract:
1. A secondary battery comprising: a first electrode plate including a first electrode collector, the first electrode collector having a first electrode coating portion coated with a first electrode active material, a first electrode uncoated portion on at least one end of the first electrode collector, and a first protrusion on at least one end of the first electrode coating portion; a second electrode plate including a second electrode collector, the second electrode collector having a second electrode coating portion coated with a second electrode active material, a second electrode uncoated portion on a least one end of the second electrode collector, and a second protrusion on a least one end of the second electrode coating portion; a separator between the first electrode plate and the second electrode plate for insulating the first electrode plate from the second electrode plate; and at least one insulation member on and covering the first protrusion, the second protrusion, or both the first protrusion and the second protrusion, wherein the at least one insulation member includes a base substrate such that an electrolyte is capable of flowing through the base substrate and an adhesive layer coated on at least one surface of the base substrate in a pattern having openings spaced from each other by an interval, and wherein the base substrate has a porosity above 1%.