Patent ID: 9362586
Filing Date: 2016-06-07
CPC Classification: H01M,Y02E,Y02P,Y10T

Claim Text:
1. A secondary battery comprising: an electrode assembly including a positive electrode plate, a negative electrode plate, and a separator, wherein the positive electrode plate and the negative electrode plate are stacked with the separator disposed between, wherein the positive electrode plate includes a plurality of positive electrode non-coating portions interposed between a plurality of positive electrode active material regions, wherein the plurality of positive electrode non-coating portions include including a plurality of first positive electrode bent portions at a first side of the electrode assembly, and wherein the plurality of positive electrode active material regions include a plurality of second positive electrode bent portions at a second side of the electrode assembly opposite the first side, wherein the negative electrode plate includes a plurality of negative electrode non-coating portions interposed between a plurality of negative electrode active material regions, wherein the plurality of negative electrode non-coating portions include including a plurality of first negative electrode bent portions at the second side of the electrode assembly, and wherein the plurality of negative electrode active material regions include a plurality of second negative electrode bent portions at the first side of the electrode assembly, such that a first negative electrode bent portion of the plurality of first negative electrode bent portions is adjacent with a second positive electrode bent portion of the plurality of second positive electrode bent portions on the second side, and that a second negative electrode bent portion of the plurality of second negative electrode bent portions is adjacent with a first positive electrode bent portion of the plurality of first positive electrode bent portions on the first side; a positive electrode tab electrically connected to one of the plurality of positive electrode non-coating portions wherein the positive electrode tab is coupled to only one of the plurality of first positive electrode bent portions; and a negative electrode tab electrically connected to one of the plurality of negative electrode non-coating portions wherein the negative electrode tab is coupled to only one of the plurality of first negative electrode bent portions, wherein the positive electrode plate and the negative electrode plate have a zigzag shape.