The present disclosure provides an electrode assembly including a first electrode sheet, the first electrode sheet includes a first current collector and a first tab. The first tab extends from a surface of the first electrode sheet and electrically connected with the first current collector, a plurality of tabs are provided and the number of the first tabs is q. The plurality of first tabs include a first breakable tab, the first breakable tab includes a breakable part and a first insulating layer, the first insulating layer wraps the breakable part, the breakable part includes a first segment and a second segment, the first segment is connected with the second segment, and an included angle between the first segment and the second segment is less than 90°. The number of first breakable tabs is p, and p/q≤1/2.