SYSTEM COMPRISING A ROLLING APPARATUS AND AN ELECTRODE PLATE

This application relates to a rolling apparatus and a processing device, which are used for rolling an electrode plate (1). The rolling apparatus includes a first roller (2) and a second roller (3), where the first roller (2) and the second roller (3) are disposed at two sides of the electrode plate in a thickness direction of the electrode plate. The first roller (2) is provided with a plurality of recessed portions (21), the electrode plate (1) includes a plurality of insulation coating layer regions (11) and a plurality of tabs (12), and in a projection of the electrode plate (1) in the thickness direction, at least part of a projection of the insulation coating layer region (11) and a projection of the tab (12) are located within a projection of the recessed portion (21). The rollers deflect under a large rolling pressure. The recessed portion (21) provides a gap for the tab (12) when the first roller (2) deflects, reducing the probability of the first roller (2) coming into contact with the tab (12), lowering the risk of crushing the tab (12), and reducing fractures in the subsequent processes of stretching and ultrasonic welding.