Patent ID: 8956754
Filing Date: 2015-02-17
Classification: H01M,Y02E,Y10T

Abstract:
1. An electrode plate of a secondary battery, the electrode plate comprising: an electrode current collector; an active material coated portion on at least one surface of the electrode current collector; and an uncoated portion on the electrode current collector, the uncoated portion including pressed portions extending from a boundary of the active material coated portion and the uncoated portion to a distance on the uncoated portion in a widthwise direction of the electrode current collector, wherein the pressed portions include a plurality of creases extending from the boundary of the active material coated portion and the uncoated portion, and wherein the plurality of creases are shorter than the uncoated portions in a widthwise direction of the electrode current collector, as measured along a normal to the boundary of the active material coated portion and the uncoated portion.