公开(公告)号：US11764630B2

公开(公告)日：2023-09-19

申请号：US17512030

申请日：2021-10-27

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

Inventor： Kaihe Zhang ,  Kunxing Sun ,  Liangliang Zhang ,  Chunxia Cai ,  Xuan Zou ,  Chunshuang Feng

IPC: H02K3/28

CPC classification number: H02K3/28 ,  H02K2203/06 ,  H02K2213/03

Abstract: The present disclosure discloses a stator assembly and motor. The stator assembly comprises a stator core and a multi-branch rectangular conductor winding, an even number of stator slots are provided on an inner circumference of the stator core, and each of the stator slots is divided into multiple layers for accommodating rectangular conductors. The multi-branch rectangular conductor winding is provided in the stator slots, and the multi-branch rectangular conductor winding comprises B number of parallel branches, and B is an integer multiple of 4. The number of slots per phase per pole, Q, of the stator assembly is an odd number, and Q and B satisfy a relationship that both (Q+1)*2/B and (Q−1)*2/B are integers. In the stator assembly of the present disclosure, by way of the special winding connection design, there is no phase difference of magnetic fields between the parallel branches, and each parallel branch equally passes through each layer in the stator slots, which fundamentally inhibits the generation of circulating current between the parallel branches, suppresses the harmonics, and improves the efficiency of the motor.

公开(公告)号：US20220255385A1

公开(公告)日：2022-08-11

申请号：US17512030

申请日：2021-10-27

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

Inventor： Kaihe Zhang ,  Kunxing Sun ,  Liangliang Zhang ,  Chunxia Cai ,  Xuan Zou ,  Chunshuang Feng

IPC: H02K3/28

Abstract: The present disclosure discloses a stator assembly and motor. The stator assembly comprises a stator core and a multi-branch rectangular conductor winding, an even number of stator slots are provided on an inner circumference of the stator core, and each of the stator slots is divided into multiple layers for accommodating rectangular conductors. The multi-branch rectangular conductor winding is provided in the stator slots, and the multi-branch rectangular conductor winding comprises B number of parallel branches, and B is an integer multiple of 4. The number of slots per phase per pole, Q, of the stator assembly is an odd number, and Q and B satisfy a relationship that both (Q+1)*2/B and (Q−1)*2/B are integers. In the stator assembly of the present disclosure, by way of the special winding connection design, there is no phase difference of magnetic fields between the parallel branches, and each parallel branch equally passes through each layer in the stator slots, which fundamentally inhibits the generation of circulating current between the parallel branches, suppresses the harmonics, and improves the efficiency of the motor.

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.