US 11,916,456 B2
Connection structure for a stator of a drive motor
Ga Eun Lee, Seongnam-si (KR); Dong Yeon Han, Seoul (KR); Yong Sung Jang, Hwaseong-si (KR); Deok Hwan Na, Seoul (KR); Jae Won Ha, Hwaseong-si (KR); and Myung Kyu Jeong, Siheung-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Dec. 1, 2021, as Appl. No. 17/540,109.
Claims priority of application No. 10-2021-0024489 (KR), filed on Feb. 24, 2021.
Prior Publication US 2022/0271599 A1, Aug. 25, 2022
Int. Cl. H02K 3/52 (2006.01)
CPC H02K 3/522 (2013.01) 15 Claims
OG exemplary drawing
 
1. A connection structure of a stator of a drive motor, the connection structure configured to allow coils to be wound in a plurality of slots provided in a stator core and to connect the coils withdrawn from the slots, wherein:
the coils are wound in the slots to form first-type structures and second-type structures configured such that a withdrawal direction of three-phase (U-, W- and V-phase) withdrawal lines withdrawn from the slots of the first-type structures and a withdrawal direction of N-phase withdrawal lines withdrawn from the slots of the first-type structures are opposite to a withdrawal direction of three-phase (U-, W- and V-phase) withdrawal lines withdrawn from the slots of the second-type structures and a withdrawal direction of N-phase withdrawal lines withdrawn from the slots of the second-type structures; and
the first-type structures and the second-type structures are disposed symmetrically to each other with respect to a reference line formed to divide the slots in half.