Conveying system and battery production system

A conveying system used for sheet conveying, comprising:

• a driving roller making contact with a sheet;
• a press roller arranged correspondingly to the driving roller, the press roller abutting against at least part of a surface of the sheet facing away from the driving roller and pressing the sheet against the driving roller, wherein the press roller comprises:
• a main shaft with a central axis;
• a plurality of hollow rubber rollers detachably sleeving the main shaft and distanced from each other along the central axis, wherein an interior of each rubber roller is of a hollow structure communicating with an exterior;
• and
• at least one pair of fixing clamp rings arranged on two sides of each hollow rubber roller along the central axis so as to fix a position of the hollow rubber roller on the main shaft along the central axis, and an outer diameter of the fixing clamp ring is less than that of the hollow rubber roller;
• and
• first protective enclosures each comprising a circumferential part covering an outer circumferential surface of a corresponding fixing clamp ring and a radial part covering the side surface of the fixing clamp ring facing away from each hollow rubber roller, wherein a circumferential part abuts against the side surface of the hollow rubber roller, and a radial part abuts against the outer circumferential surface of the main shaft.