公开(公告)号：US20240275224A1

公开(公告)日：2024-08-15

申请号：US18221606

申请日：2023-07-13

Applicant: LG Electronics Inc.

Inventor： Younggeun MIN ,  Hongsik HWANG ,  Kyungmo YU ,  Jaeho KIM ,  Kyungho HA

IPC: H02K1/276

CPC classification number: H02K1/2773 ,  H02K2213/03

Abstract: A flux concentrate type rotor includes a rotor core including an inner diameter portion core, a plurality of outer diameter portion cores, and a plurality of bridges connecting the plurality of outer diameter portion cores to the inner diameter portion core, and a plurality of arc type permanent magnets each inserted between two adjacent outer diameter portion cores. Each of the plurality of bridges includes a first straight portion extending in a radial direction of the rotor core, and a first angle θ1 between a first extension line connecting a center of the arc type permanent magnet and a center of the inner diameter portion core and a second extension line connecting a center of the first straight portion of the bridge and the center of the inner diameter portion core satisfies: θ1=5.75°±4°.

公开(公告)号：US20240266894A1

公开(公告)日：2024-08-08

申请号：US18221609

申请日：2023-07-13

Applicant: LG Electronics Inc.

Inventor： Younggeun MIN ,  Jaeho KIM ,  Hongsik HWANG ,  Kyungho HA

IPC: H02K1/276

CPC classification number: H02K1/2773 ,  H02K2213/03

Abstract: A flux concentrate type motor includes a rotor core including an inner diameter portion core, a plurality of outer diameter portion cores, and a plurality of bridges connecting the plurality of outer diameter portion cores to the inner diameter portion core; and a plurality of arc type permanent magnets each inserted between two adjacent outer diameter portion cores. A first angle θ1 formed between a first extension line connecting a center of the arc type permanent magnet and a center of the inner diameter portion core and a second extension line connecting a center of an outer arc of the outer diameter portion core and the center of the inner diameter portion core may satisfy: θ1=k1×PA (kl is 0.16 to 0.55, and PA=360°/(2×P(a number of pole of the permanent magnet)), where the first angle θ1 may be between 4° and 10°.