US 11,881,744 B2
Stator assembly and method for winding coils around the stator assembly
Mingpan Pan, Zhongshan (CN); and Sanzeng Liang, Zhongshan (CN)
Assigned to ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD., Zhongshan (CN)
Filed by Zhongshan Broad-Ocean Motor Co., Ltd., Zhongshan (CN)
Filed on Dec. 22, 2020, as Appl. No. 17/129,969.
Application 17/129,969 is a continuation in part of application No. PCT/CN2019/105355, filed on Sep. 11, 2019.
Claims priority of application No. 201910316200.0 (CN), filed on Apr. 19, 2019; and application No. 201920547109.5 (CN), filed on Apr. 19, 2019.
Prior Publication US 2021/0111593 A1, Apr. 15, 2021
Int. Cl. H02K 1/14 (2006.01); H02K 1/16 (2006.01); H02K 3/32 (2006.01); H02K 15/02 (2006.01); H02K 19/10 (2006.01)
CPC H02K 1/146 (2013.01) [H02K 1/16 (2013.01); H02K 3/32 (2013.01); H02K 15/02 (2013.01); H02K 19/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A stator assembly, comprising:
a strip stator core comprising twelve stator core units, twelve connection parts, and twelve slots; every two adjacent stator core units being connected by one of the twelve connection parts; each slot being disposed between every two adjacent stator core units, and each stator core unit comprising a yoke and a tooth protruding from one end of the yoke; every two adjacent teeth being abutted against each other to form the twelve slots, respectively;
a three-phase coil winding, the three-phase coil winding comprising a U-phase winding, a V-phase winding, and a W-phase winding;
an end insulator, the end insulator comprising a first end insulator and a second end insulator; the first end insulator comprising a first coil-in pin, a second coil-in pin, a third coil-in pin, and a coil-out pin;
wherein:
the first end insulator and the second end insulator are secured to two end faces of the strip stator core, respectively;
the three-phase coil winding is wound on the strip stator core;
the U-phase winding, the V-phase winding, and the W-phase winding are introduced to the strip stator core via the first coil-in pin, the second coil-in pin, and the third coil-in pin, respectively, and leave the strip stator core via the coil-out pin; and
the twelve stator core units are connected to each other to form a circular structure comprising a cavity, and each stator core unit comprises a curved surface; twelve curved surfaces of the twelve stator core units are connected to each other to surround the cavity; the first coil-in pin is disposed on a first position of the first end insulator corresponding to the third stator core unit; the second coil-pin is disposed on a second position of the first end insulator corresponding to the fourth stator core unit; the third coil-in pin is disposed on a third position of the first end insulator corresponding to the fifth stator core unit;
and the coil-out pin is disposed on a fourth position of the first end insulator corresponding to the tenth stator core unit.