Pole piece detection mechanism and pole piece production line

The utility model belongs to the technical field of lithium battery production and manufacturing, and discloses a pole piece detection mechanism and a pole piece production line. The pole piece detection mechanism comprises a support roller used for bearing a pole piece to be detected; the first sensor is arranged right above the area, not covered with the to-be-detected pole piece, of the supporting roller and is used for identifying the outer side edge of the edge foil material area; the second sensor is arranged right above the coating area and is used for identifying the inner side edge of the edge foil material area adjacent to the coating area; and the third sensor is arranged right above the middle foil material area and is used for identifying the inner side edge of the coating area adjacent to the middle foil material area. The first sensor, the second sensor and the third sensor can detect the edge straightness of the to-be-detected pole piece according to the color difference change of the to-be-de