Patent ID: 9685649
Date: 2017-06-20
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. An electrode assembly comprising: a first electrode plate having a first electrode tab at an end of one side thereof; a second electrode plate having a second electrode tab, which is formed in a same direction as a longitudinal direction of the first electrode tab and is formed at a position not overlapping the first electrode tab, and a protrusion which is formed at a position overlapping the first electrode tab; and a separator insulating the first electrode plate and the second electrode plate, wherein an area of the first electrode plate is smaller than an area of the second electrode plate, wherein the first electrode plate is a cathode plate and the second electrode plate is an anode plate, and wherein the second electrode plate is configured such that some lithium ions discharged from the first electrode tab can be transferred to the protrusion and other lithium ions discharged from the first electrode tab can be transferred to the second electrode plate, wherein a width of the protrusion is the same as a width of the first electrode tab, and wherein at least one surface of the first electrode plate and a portion of a surface of the first electrode tab are coated with a first electrode active material and at least one surface of the second electrode plate and a portion of a surface of the protrusion are coated with a second electrode active material such that a portion of the first electrode active material on the first electrode tab overlaps a portion of the second electrode active material on the second electrode plate and another portion of the first electrode active material on the first electrode tab overlaps the second electrode active material on the protrusion.