Cylindrical lithium ion battery slitting knife maintenance device

The utility model discloses a cylindrical lithium ion battery slitting knife maintenance device which comprises a liquid storage tank, a liquid level sensor, wool felt wiping pieces and a cutting knife assembly, the liquid level sensor is arranged at the lower end of the liquid storage tank, the liquid storage tank is connected with installation grooves in the parallel wool felt wiping pieces through a flow dividing pipeline, the installation grooves are connected with the flow dividing pipeline through quick connectors, and the cutting knife assembly is connected with the liquid storage tank. The installation groove is filled with wool felt, arc-shaped movable grooves corresponding to cutters in the cutter assembly are formed in the installation groove, the cutters are evenly distributed on the driving roller through cutter bases, the two ends of the driving roller are rotationally connected with the supporting frame through bearings, the driving roller is connected with an external power device, and the woo