US 12,272,992 B2
Stator structure and method for manufacturing stator structure
Zhengyu Tang, Jiangsu (CN); Di Wang, Jiangsu (CN); Zhixin Yu, Jiangsu (CN); Wei Wang, Jiangsu (CN); Jiebao Li, Jiangsu (CN); and Li Han, Jiangsu (CN)
Assigned to XPT (NANJING) E-POWERTRAIN TECHNOLOGY CO., LTD., Jiangsu (CN)
Filed by XPT (NANJING) E-POWERTRAIN TECHNOLOGY CO., LTD., Jiangsu (CN)
Filed on Aug. 10, 2022, as Appl. No. 17/885,023.
Claims priority of application No. 202110917791.4 (CN), filed on Aug. 11, 2021.
Prior Publication US 2023/0047962 A1, Feb. 16, 2023
Int. Cl. H02K 1/20 (2006.01); H02K 1/16 (2006.01); H02K 9/19 (2006.01); H02K 15/02 (2006.01)
CPC H02K 1/20 (2013.01) [H02K 1/16 (2013.01); H02K 9/19 (2013.01); H02K 15/024 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A stator structure comprising:
a plurality of first lamination layers, each first lamination layer being formed by stacking at least one first lamination, each first lamination having a first notch, the first notches of two adjacent first lamination layers being misaligned by 180 degrees;
a plurality of second lamination layers sandwiched in between the first lamination layers, each second lamination layer being formed by stacking a plurality of second laminations, each second lamination having a plurality of first oil passages, the first oil passages of two adjacent second lamination layers being misaligned;
two third lamination layers, the second lamination layer located in the middle of the stator structure being sandwiched in between the two third lamination layers, each third lamination layer being formed by stacking a plurality of third laminations, each third lamination having a second notch and a plurality of second oil passages, the second notch being misaligned with the first notch of the first lamination layer adjacent to the third lamination layer by 180 degrees, the second oil passages being misaligned with the first oil passages; and
two oil spraying rings connected to two first lamination layers located at outermost sides.