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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.
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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
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.
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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
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.
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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.
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