Patents by Inventor Kaihe ZHANG

Kaihe ZHANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11764630
    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.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: September 19, 2023
    Inventors: Kaihe Zhang, Kunxing Sun, Liangliang Zhang, Chunxia Cai, Xuan Zou, Chunshuang Feng
  • Patent number: 11699931
    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.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: July 11, 2023
    Assignee: Jing-Jin Electric Technologies Co., Ltd.
    Inventors: Xuan Zou, Liangliang Zhang, Chunshuang Feng, Chunxia Cai, Lei Han, Yang Zhang, Dandan Qi, Xin Xu, Kaihe Zhang, Biqing Sun
  • Patent number: 11670996
    Abstract: A rotor core is provided for a step-skewing motor that includes rotor core segments mutually staggered by a preset angle. Each of the rotor core segments includes magnet slots along a circumferential direction, with a magnet provided in the magnet slot. An outer circular surface of each of the rotor core segments is provided thereon with a number of auxiliary grooves extending across the segment in an axial direction, and positions and/or cross-sectional shapes of the auxiliary grooves on the rotor core segments are not completely same so as to suppress torque ripple and vibration noise when the motor rotates.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: June 6, 2023
    Assignee: Jing-Jin Electric Technologies Co., Ltd
    Inventors: Kaihe Zhang, Liangliang Zhang, Longyu Ju
  • Publication number: 20220255385
    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.
    Type: Application
    Filed: October 27, 2021
    Publication date: August 11, 2022
    Inventors: Kaihe Zhang, Kunxing Sun, Liangliang Zhang, Chunxia Cai, Xuan Zou, Chunshuang Feng
  • Publication number: 20220021288
    Abstract: A rotor core is provided for a step-skewing motor that includes rotor core segments mutually staggered by a preset angle. Each of the rotor core segments includes magnet slots along a circumferential direction, with a magnet provided in the magnet slot. An outer circular surface of each of the rotor core segments is provided thereon with a number of auxiliary grooves extending across the segment in an axial direction, and positions and/or cross-sectional shapes of the auxiliary grooves on the rotor core segments are not completely same so as to suppress torque ripple and vibration noise when the motor rotates.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 20, 2022
    Inventors: Kaihe ZHANG, Liangliang ZHANG, Longyu JU
  • Publication number: 20220014057
    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.
    Type: Application
    Filed: June 30, 2021
    Publication date: January 13, 2022
    Inventors: Xuan ZOU, Liangliang ZHANG, Chunshuang FENG, Chunxia CAI, Lei HAN, Yang ZHANG, Dandan QI, Xin XU, Kaihe ZHANG, Biqing SUN