Heterojunction battery PECVD suction nozzle assembly, suction cup mechanism and suction nozzle mark improvement method

The invention provides a heterojunction cell PECVD suction nozzle assembly, a suction cup mechanism and a suction nozzle mark improvement method. The suction nozzle assembly comprises a suction nozzle and a suction nozzle rod. The suction nozzle rod comprises a connecting part, a sliding part, a rotating part and a threaded part which are connected with one another, and the rotating part is sleeved with a spring; the spring is sleeved with a threaded sleeve. An upper fixing nut and a lower fixing nut are arranged outside the threaded sleeve; the suction cup mechanism comprises a plurality of N/P plate feeding suction cup assemblies arranged on the N/P plate feeding mechanical arm and a plurality of discharging suction cup assemblies arranged on the discharging mechanical arm. The improvement method comprises the steps that a sucker mechanism of an improved structure is adopted, and a carrier plate is made of a carbon fiber material; the steps of the automatic feeding pull piece and the turnover mechanism are