Permanent magnet synchronous motor stator core split punching sheet, stator core and assembling method

The invention discloses a permanent magnet synchronous motor stator core split punching sheet, a stator core and an assembling method. A stator split punching sheet is included. The stator split punching sheet comprises an arc-shaped yoke part and a plurality of slot teeth. A splicing groove is arrangedin one end of the yoke part; a splicing boss is arranged at the other end; two welding grooves are arranged in an outer ring of the yoke part, and a 30-degree interval is formed between the two welding grooves;a stator core split structure is formed by overlapping and riveting a plurality of stator split punching sheets; and six stator core split structures are inserted into the splicing groove through asplicing boss to be spliced into a full-circle stator core module, the full-circle statorcore module is overlaid in a mode that every two adjacent layers of full-circle stator core modules rotate by 30 degrees, and the multiple full-circle stator core modules are fixedly connected in thewelding grooves in a cont