公开(公告)号：US20230050332A1

公开(公告)日：2023-02-16

申请号：US17876342

申请日：2022-07-28

Applicant: Jing-Jin Electric Technologies Co., Ltd.

Inventor： Xin Xu ,  Liangliang Zhang ,  Lei Han ,  Chunxia Cai

IPC: H02K3/42 ,  H02K1/16 ,  H02K3/24

Abstract: A stator structure and a flat wire motor are provided. The stator structure comprises a stator core, stator windings and an avoidance layer. The stator core has an inner cylinder cavity, and a plurality of iron core slots arranged at intervals in a circumferential direction on an end face of the stator core. The iron core slot is communicated with the inner cylinder cavity via a slot opening. The stator windings have a plurality of layers of flat wire conductor wound in the iron core slots. The avoidance layer is located between the slot opening and a first layer of flat wire conductor in a radial direction of the stator core. During the operation of the flat wire motor with this stator structure, the skin effect caused by the high-frequency change of the magnetic field will act on the avoidance layer, thereby reducing the skin effect generated at the first layer of flat wire conductor, weakening the influence of the slot leakage flux on the first layer of flat wire conductor, reducing the eddy current loss of the first layer of flat wire conductor, and further reducing the eddy current loss of the whole motor, and thus achieving the technical effect of improving the motor efficiency.

公开(公告)号：US11699931B2

公开(公告)日：2023-07-11

申请号：US17364030

申请日：2021-06-30

Applicant: Jing-Jin Electric Technologies Co., Ltd.

Inventor： Xuan Zou ,  Liangliang Zhang ,  Chunshuang Feng ,  Chunxia Cai ,  Lei Han ,  Yang Zhang ,  Dandan Qi ,  Xin Xu ,  Kaihe Zhang ,  Biqing Sun

IPC: H02K1/27 ,  H02K1/276 ,  H02K1/24

CPC classification number: H02K1/2766 ,  H02K1/246 ,  H02K2213/03

Abstract: A rotor structure of a magnet motor includes a rotating shaft and an iron core on the rotating shaft. Magnet grooves are disposed inside the iron core along a circumferential direction with a magnet provided therein. A distance between an edge line of the magnet groove close to a circumferential edge of the iron core and the circumferential edge of the iron core varies so that a width of a flux barrier formed varies. One end of a long side of the magnet groove close to the circumferential edge is formed with an anti-demagnetization groove communicating with the magnet groove, and an edge line of the anti-demagnetization groove tilts toward the circumferential edge of the iron core. Process slots are provided between the magnet grooves and the circumferential edge of the iron core that are used to increase a salient rate and reluctance torque of the motor.