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CN-119420060-B - Iron core single chip, stator iron core, motor, processing equipment and processing method

CN119420060BCN 119420060 BCN119420060 BCN 119420060BCN-119420060-B

Abstract

The application relates to an iron core single piece, a stator iron core, a motor, processing equipment and a processing method, wherein the iron core single piece comprises a first alloy area and a second alloy area, the first alloy area is provided with a tooth part and a first yoke part, and the first yoke part is arranged on the periphery of the tooth part; the second alloy region has a second yoke portion disposed on an outer periphery of the first yoke portion, the second alloy region includes a plurality of atoms arranged in a disordered state, and a magnetic permeability of the first alloy region is greater than a magnetic permeability of the second alloy region. The magnetic permeability of the first alloy area in the iron core monolithic provided by the application is larger than that of the second alloy area, and the material of the first alloy area can be an annealed emerging soft magnetic material, because the second alloy area comprises a plurality of atoms in a disordered arrangement state, the periphery of the first alloy region can be protected, the iron core single piece and the periphery of the stator iron core can be more effectively dispersed and resisted under the action of external force, and the structural strength and the technological performance of the iron core single piece can be improved.

Inventors

  • GUAN YUNQI
  • ZHENG HUIYUN
  • SHI ZHENGLIANG
  • LI YELIN
  • HU WENXIANG
  • JIA BO

Assignees

  • 珠海格力电器股份有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (12)

  1. 1. An iron core single piece (1) provided in a stator core of a motor, comprising: A first alloy region (11), the first alloy region (11) having a tooth portion (111) and a first yoke portion (112), the first yoke portion (112) being provided on an outer periphery of the tooth portion (111); The second alloy region (12) is positioned at the periphery of the first alloy region (11) and is used for protecting the periphery of the first alloy region (11), the second alloy region (12) is provided with a second yoke (121), the second yoke (121) is arranged at the periphery of the first yoke (112), the second alloy region (12) comprises a plurality of atoms which are arranged in a disordered state, and the magnetic permeability of the first alloy region (11) is larger than that of the second alloy region (12); The first alloy region (11) is made of nanocrystalline alloy, the second alloy region (12) is made of amorphous alloy, the size of the first yoke part (112) is W1 in the radial direction of the iron core single sheet (1), the size of the second yoke part (121) is W2, the ratio range of W1 to W2 is more than or equal to 1 and less than or equal to 4, when the motor frequency of the motor is below a frequency preset threshold value, the ratio range of W1 to W2 is more than or equal to 2 and less than or equal to 4, and when the motor frequency of the motor is greater than the frequency preset threshold value, the ratio range of W1 to W2 is more than or equal to 1 and less than or equal to 3; The maximum outer diameter of the iron core single piece (1) is d, and the sum range of the dimension W1 of the first yoke part (112) and the dimension W2 of the second yoke part (121) meets d/18 and is less than or equal to W1+W2 and is less than or equal to d/10.
  2. 2. The core monolith (1) according to claim 1, wherein the first alloy region (11) comprises a plurality of grains in an ordered arrangement, the grains having a size of 20 nm or less.
  3. 3. The iron core monolithic (1) according to claim 1, characterized in that the amorphous alloy is of the material Fe-Si-B-Nb-Cu system, fe-Co-Si-B-Nb-Cu system, fe-Si-B-P-Cu system, fe-Co-Si-B-P-Cu system, fe-Zr-B-Cu system or Fe-Co-Zr-B-Cu system.
  4. 4. A stator core, characterized in that the stator core comprises core single pieces (1) according to any one of claims 1 to 3, the number of the core single pieces (1) is a plurality, the core single pieces (1) are stacked, and an insulating layer (2) is arranged between two adjacent core single pieces (1).
  5. 5. An electric machine comprising the stator core of claim 4.
  6. 6. A processing apparatus for manufacturing a stator core according to claim 4, comprising a heating assembly (6) and a cooling assembly (7), the heating assembly (6) being arranged in correspondence of the first alloy region (11) and the cooling assembly (7) being arranged in correspondence of the second alloy region (12).
  7. 7. Machining device according to claim 6, characterized in that the heating assembly (6) comprises a heating element (61), the first alloy region (11) having in the middle a receiving space (13) for receiving the heating element (61), the axis of the heating element (61) coinciding with the axis of the stator core, the second alloy region (12) being arranged with its outer periphery in contact with the cooling assembly (7).
  8. 8. The processing apparatus according to claim 6, wherein the cooling assembly (7) comprises an annular cooling tool (71), a cooling flow passage (72) is provided in the annular cooling tool (71), and the cooling flow passage (72) extends in a circumferential direction of the annular cooling tool (71).
  9. 9. The processing apparatus according to claim 8, wherein the cooling flow passage (72) includes a plurality of annular flow passages, the plurality of annular flow passages being disposed in order along an axial direction of the stator core.
  10. 10. The processing apparatus according to claim 8, wherein the cooling flow passage (72) is a spiral flow passage extending in an axial direction of the stator core.
  11. 11. The processing apparatus according to any one of claims 6 to 10, further comprising a temperature detection assembly (8), the temperature detection assembly (8) being adapted to perform temperature measurements of the first alloy region (11) and the second alloy region (12), the temperature detection assembly (8) being in signal connection with the heating assembly (6).
  12. 12. A processing method, characterized in that the processing apparatus according to any one of claims 6 to 11 is employed for manufacturing the stator core according to claim 4, comprising the steps of: Preparing a plurality of iron core single-piece bodies on the second alloy strip; A plurality of iron core single-piece bodies are stacked to form a stator iron core block, the heating assembly (6) is arranged in the middle of the stator iron core block, and the cooling assembly (7) is arranged on the periphery of the stator iron core block; and starting the heating component (6) and the cooling component (7) to enable the middle part of the stator core block to form the first alloy region (11) through crystallization annealing.

Description

Iron core single chip, stator iron core, motor, processing equipment and processing method Technical Field The application relates to the technical field of motors, in particular to an iron core single piece, a stator iron core, a motor, processing equipment and a processing method. Background With the development of modern processes, motors have been widely used in various technical fields, and in the use process of the motors, the motor loss mainly comprises iron loss and copper loss, wherein the iron loss is generated by a motor core, when the motor structure is fixed, the iron loss is mainly determined by the characteristics of soft magnetic materials forming the core, and the copper loss is generated by a motor winding and also can be influenced by the magnetic conductivity of the core material. In order to improve the magnetic permeability of the iron core material, the prior art often produces new soft magnetic materials such as nanocrystalline and the like through an annealing process, the magnetic permeability is greatly improved compared with that of conventional electrical steel, and the iron loss can be reduced by more than 50 percent relative to the electrical steel. However, the materials such as nanocrystalline alloy and the like are subjected to annealing treatment and then embrittled, the process performance is poor, the materials are easy to damage in the production, storage and transportation processes, and the materials cannot be installed in an interference fit manner during assembly, so that the emerging soft magnetic material with low iron loss and high magnetic conductivity is difficult to popularize and apply. Disclosure of Invention The application provides an iron core single piece, a stator iron core, a motor, processing equipment and a processing method, which are used for solving the technical problem that an emerging soft magnetic material in the prior art is embrittled due to annealing and is easy to damage. In a first aspect, the present application provides a core segment comprising: a first alloy region having a tooth portion and a first yoke portion provided at an outer periphery of the tooth portion; The second alloy region is provided with a second yoke part, the second yoke part is arranged on the periphery of the first yoke part, the second alloy region comprises a plurality of atoms which are arranged in a disordered state, and the magnetic permeability of the first alloy region is larger than that of the second alloy region. Optionally, the first alloy region includes a plurality of grains in an ordered arrangement, the grains having a size below 20 nanometers. Optionally, in the first direction, the first yoke has a size W1, the second yoke has a size W2, and the ratio of W1 to W2 is in a range of 1≤w1/w2≤4. Optionally, the maximum outer diameter of the core single piece is d, the first direction is the radial direction of the core single piece, and the sum range of the dimension W1 of the first yoke part and the dimension W2 of the second yoke part satisfies d/18 less than or equal to W1+W2 less than or equal to d/10. Optionally, the material of the first alloy region is a nanocrystalline alloy, and the material of the second alloy region is an amorphous alloy. Optionally, the amorphous alloy is made of Fe-Si-B-Nb-Cu system, fe-Co-Si-B-Nb-Cu system, fe-Si-B-P-Cu system, fe-Co-Si-B-P-Cu system, fe-Zr-B-Cu system or Fe-Co-Zr-B-Cu system. In a second aspect, the present application provides a stator core, including the core singlechips provided in the first aspect of the present application, where the number of core singlechips is plural, the plural core singlechips are stacked, and an insulating layer is disposed between two adjacent core singlechips. In a third aspect, the present application provides an electric machine comprising the stator core provided in the second aspect of the present application. Alternatively, in the first direction, the first yoke has a dimension W1, and the second yoke has a dimension W2; When the motor frequency of the motor is below a frequency preset threshold value, the ratio range of W1 to W2 is more than or equal to 2 and less than or equal to W1/W2 and less than or equal to 4; When the motor frequency of the motor is larger than a frequency preset threshold value, the ratio range of W1 to W2 is more than or equal to 1 and less than or equal to 3. In a fourth aspect, the present application provides a processing apparatus for manufacturing the stator core provided in the second aspect of the present application, including a heating assembly and a cooling assembly, where the heating assembly is disposed corresponding to the first alloy region, and the cooling assembly is disposed corresponding to the second alloy region. Optionally, the heating assembly comprises a heating element, the middle part of the first alloy region is provided with a containing space for containing the heating element, the axis of the heating element is coin