Flat wire permanent magnet synchronous motor

Abstract

The invention relates to the technical field of permanent magnet motors, in particular to a flat wire permanent magnet synchronous motor which comprises a rotating shaft, a driving mechanism installed on the rotating shaft, a protection mechanism installed on the driving mechanism and a fastening mechanism installed on the rotating shaft. A plurality of groups of mounting grooves are formed in the inner edge of the rotor core, magnetic steel is respectively mounted in the plurality of groups of mounting grooves, the stator core is arranged on the outer side of the rotor core, a plurality of mounting grooves are formed in the inner side of the stator core, and six layers of flat copper wires are mounted in the mounting grooves; through cooperative installation of the driving mechanism, under the action of current, the driving mechanism can rotate at a high speed, then electric energy is converted into kinetic energy to be output, a vehicle is conveniently driven to work, through cooperation of the protection mechanism, tight abutting against the inner side of the driving mechanism is facilitated, and loosening and falling are prevented; the driving mechanism can be stably installed on the rotating shaft, and the driving mechanism is prevented from loosening to affect the performance.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet motor technology, specifically a flat wire permanent magnet synchronous motor. Background Technology

[0002] Permanent magnet synchronous motors (PMSMs) have been widely used in new energy vehicles, industrial drives, and home appliances due to their high power density, high efficiency, and excellent speed regulation performance. As application scenarios place increasingly higher demands on motor performance, further improving the power density, efficiency, torque output capability, and reliability of motors has become a key focus of research in this field.

[0003] Regarding stator windings, traditional round wire windings suffer from low slot fill factor due to gaps between conductors, limiting power density and impacting heat dissipation. In rotor structure, the arrangement of permanent magnets significantly affects motor torque, vibration, noise, and demagnetization resistance. Most existing designs use simple single "I" or "V" shaped arrangements, but these have limited reluctance torque utilization, high noise levels, and consequently affect motor performance. For rotor assembly and mounting, the magnets endure immense centrifugal force at high speeds, making reliable mounting crucial. Common methods include adhesive bonding and slot fixing, but these lack protective measures. Adhesive bonding may age at high temperatures, while simple slot structures can loosen under extreme conditions. Furthermore, rotor cores are mostly made by gluing multiple silicon steel sheets together, lacking secure connections, which can lead to warping and delamination over time, ultimately damaging the motor.

[0004] Therefore, there is an urgent need in this field for a comprehensive and optimized flat wire permanent magnet synchronous motor that can combine the high slot fill factor advantage of flat wire windings with an efficient rotor magnetic circuit design, while solving problems such as the reliability of magnet fixing, rotor structural strength, and connection stability with the shaft, thereby achieving a comprehensive improvement in motor power density, efficiency, and reliability. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a flat wire permanent magnet synchronous motor.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a flat wire permanent magnet synchronous motor, including a rotating shaft, a drive mechanism mounted on the rotating shaft, a protective mechanism mounted on the drive mechanism, and a fastening mechanism mounted on the rotating shaft.

[0007] Specifically, the drive mechanism includes a rotor core, which is mounted on the rotating shaft. Multiple sets of mounting slots are provided at the inner edge of the rotor core, and magnets are installed in each of the multiple sets of mounting slots. Three mounting slots arranged in a "V" shape form a group. A stator core is provided on the outer side of the rotor core, and multiple mounting slots are provided on the inner side of the stator core. Six layers of flat copper wire are installed in the mounting slots.

[0008] Specifically, the mounting groove has a "T" shaped structure, and multiple flat copper wires are stacked and arranged inside the mounting groove. The mounting groove and the inner edge of the stator core are distributed in a ring at equal intervals.

[0009] Specifically, the rotor core has multiple air-insulating slots inside, the ends of which are arc-shaped, and the multiple air-insulating slots are located at both ends of multiple magnets.

[0010] Specifically, the rotor core has multiple auxiliary slots arranged in an annular pattern at equal intervals on its outer side. The auxiliary slots are L-shaped and located on the outer side of the magnet.

[0011] Specifically, a connecting groove is provided at the center of the rotor core, and the rotating shaft engages with the inside of the connecting groove.

[0012] Specifically, the protective mechanism includes slots, and multiple slots are respectively provided on the inner side of the rotor core and on the center line of one side of multiple magnets. The slots are semi-circular in structure, and a positioning rod is engaged between two slots. The positioning rod is cylindrical in structure.

[0013] Specifically, the fastening mechanism includes a clamp, and the two ends of the rotating shaft are respectively equipped with clamps, with the opposite sides of the two symmetrical clamps abutting against the two ends of the rotor core.

[0014] Specifically, the rotating shaft is provided with a keyway, and two fixing keys are respectively installed on the inner sides of the two clamps. The fixing keys engage with the inside of the keyway, and the clamps are frustum-shaped structures.

[0015] Specifically, multiple pressure blocks are welded to the edges of the two jackets in annular and equidistant arrangement. The pressure blocks abut against both ends of the rotor core. Multiple connecting holes in annular and equidistant arrangement are provided on the inner edge of the rotor core.

[0016] Specifically, each of the multiple connecting holes is provided with a screw rod, the two ends of which extend to the inner side of the pressure block, and the outer side of each of the multiple pressure blocks is provided with a nut, which is threadedly connected to the end of the screw rod.

[0017] Specifically, a positioning sleeve is installed on one side of each of the multiple pressure blocks, and the multiple positioning sleeves are respectively engaged with the interior of multiple connecting holes, and the end of the screw is slidably connected to the interior of the positioning sleeve.

[0018] The beneficial effects of this invention are: (1) The flat wire permanent magnet synchronous motor of the present invention, through the cooperation of the drive mechanism, enables the drive mechanism to rotate at high speed under the action of current, thereby realizing the conversion of electrical energy into kinetic energy output, which facilitates the driving of vehicles.

[0019] (2) The flat wire permanent magnet synchronous motor of the present invention, with the cooperation of the protective mechanism, is conducive to the tight contact of the inner side of the drive mechanism to prevent loosening and falling off. The opening of the semi-circular slot is conducive to the reinforcement between the magnet and the rotor core by inserting a positioning rod between the two slots after the magnet and the rotor core are installed, so that the magnet is firm and stable.

[0020] (3) The flat wire permanent magnet synchronous motor of the present invention, through the installation of the fastening mechanism, facilitates the stable installation of the drive mechanism on the rotating shaft, prevents the drive mechanism from loosening and affecting performance, and through the installation of the two sleeves, facilitates the contact between the two ends of the rotor core, so that the rotor core is installed stably. Through the opening of the keyway, the sleeves are connected firmly and stably with the rotating shaft under the cooperation of the fixed key, thereby improving the connection stability between the rotor core and the rotating shaft. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the flat copper wire and the stator core of the present invention; Figure 3 This is a schematic diagram of the connection structure between the jacket and the rotor core of the present invention; Figure 4 This is a schematic diagram of the connection structure between the positioning rod and the magnet of the present invention; Figure 5 This is a schematic diagram of the connection structure between the magnet and the rotor core of the present invention; Figure 6 This is a schematic diagram of the connection structure between the screw and the sleeve of the present invention.

[0023] In the diagram: 1. Shaft; 2. Drive mechanism; 201. Stator core; 202. Rotor core; 203. Flat copper wire; 204. Magnet; 205. Mounting slot; 206. Auxiliary slot; 207. Air magnetic shielding slot; 208. Connecting slot; 3. Fastening mechanism; 301. Keyway; 302. Jacket; 303. Nut; 304. Connecting hole; 305. Fixing key; 306. Positioning sleeve; 307. Screw; 308. Pressure block; 4. Protective mechanism; 401. Positioning rod; 402. Slot. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figure 1 , Figure 3 and Figure 4 As shown, a flat wire permanent magnet synchronous motor of the present invention includes a rotating shaft 1, a drive mechanism 2 mounted on the rotating shaft 1, a protective mechanism 4 mounted on the drive mechanism 2, and a fastening mechanism 3 mounted on the rotating shaft 1.

[0026] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the drive mechanism 2 includes a rotor core 202, which is mounted on the shaft 1. Multiple sets of mounting slots 205 are provided at the inner edge of the rotor core 202, and magnets 204 are installed inside each of these slots. Three mounting slots 205 arranged in a "V" shape form a group. A stator core 201 is located outside the rotor core 202, and multiple mounting slots 205 are provided inside the stator core 201. Six layers of flat copper wire 203 are installed inside each mounting slot 205. The installation of the rotor core 202 facilitates the connection of multiple magnets 204, thereby enabling the rotor core to... The outer side of the stator core 202 has stable magnetism. Through the installation of flat copper wires 203 inside the stator core 201, it is beneficial to convert electrical energy into an alternating magnetic field, thereby driving the rotor core 202 to rotate at high speed and converting electrical energy into kinetic energy output. At the same time, the installation of six layers of flat copper wires 203 increases the slot fill factor and the magnetic field strength. The close arrangement between the flat wires increases the contact area, and heat is more easily conducted to the stator core 201 through the insulation layer, improving the heat dissipation effect. The "V-" arrangement of the magnets 204 increases the torque, reduces noise, and has the advantage of greater output power.

[0027] Specifically, such as Figure 2 As shown, the mounting slot 205 has a "T" shaped structure, with multiple flat copper wires 203 stacked inside the mounting slot 205. The mounting slot 205 and the inner edge of the stator core 201 are distributed in a ring at equal intervals, which facilitates the tight installation of multiple layers of flat copper wires 203 inside the mounting slot 205 and makes the flat copper wires 203 evenly distributed inside the stator core 201, so that the magnetic field is stably and evenly distributed, which is conducive to the stable rotation of the rotor core 202.

[0028] Specifically, such as Figure 3 and Figure 5As shown, the rotor core 202 has multiple air-insulating slots 207 inside. The ends of the air-insulating slots 207 are arc-shaped. The multiple air-insulating slots 207 are located at both ends of multiple magnets 204. With the cooperation of multiple air-insulating slots 207, the high magnetic resistance characteristics of air are used to precisely control the path, distribution and magnitude of magnetic flux, thereby optimizing the electromagnetic performance, operating efficiency and reliability of the equipment.

[0029] Specifically, such as Figure 3 As shown, the rotor core 202 has multiple auxiliary slots 206 arranged in annular and equidistant patterns on its outer side. The auxiliary slots 206 have an "L" shape and are located on the outer side of the magnet 204. By opening multiple auxiliary slots 206, key issues such as harmonic loss, vibration noise, starting performance, and fault protection in motor operation are solved, ultimately improving the efficiency, stability, and reliability of the motor.

[0030] Specifically, such as Figure 5 As shown, a connecting groove 208 is provided at the center of the rotor core 202. The rotating shaft 1 is engaged with the connecting groove 208. The opening of the connecting groove 208 facilitates the installation of the rotating shaft 1, enabling the rotating shaft 1 to support the rotor core 202. With the cooperation of the bearings, the rotor core 202 can rotate smoothly and stably inside the stator core 201.

[0031] Specifically, such as Figure 3 and Figure 4 As shown, the protective mechanism 4 includes slots 402. Multiple slots 402 are provided on the inner side of the rotor core 202 and on the center line of one side of multiple magnets 204. The slots 402 are semi-circular structures. A positioning rod 401 is engaged between two slots 402. The positioning rod 401 is a cylindrical structure. The opening of the semi-circular slots 402 facilitates the reinforcement between the magnets 204 and the rotor core 202 after the magnets 204 and the rotor core 202 are installed. This is achieved by inserting the positioning rod 401 between two slots 402, making the magnets 204 firm and stable.

[0032] Specifically, such as Figure 1 , Figure 2 and Figure 6 As shown, the fastening mechanism 3 includes a sleeve 302. The two ends of the rotating shaft 1 are respectively equipped with sleeves 302. The two symmetrical sleeves 302 abut against the two ends of the rotor core 202 on opposite sides. The installation of the two sleeves 302 facilitates the contact between the two ends of the rotor core 202, making the rotor core 202 installed stably.

[0033] Specifically, such as Figure 1 , Figure 3 and Figure 6As shown, the rotating shaft 1 is provided with a keyway 301, and two clamps 302 are respectively installed with fixing keys 305 on their inner sides. The fixing keys 305 are engaged with the inside of the keyway 301. The clamps 302 have a frustum-shaped structure. The opening of the keyway 301 facilitates the connection between the clamps 302 and the rotating shaft 1 with the cooperation of the fixing keys 305, thereby improving the connection stability between the rotor core 202 and the rotating shaft 1.

[0034] Specifically, such as Figure 6 As shown, multiple pressure blocks 308 arranged in annular and equidistant distribution are welded to the edges of the two jackets 302. The pressure blocks 308 abut against both ends of the rotor core 202. Multiple connecting holes 304 arranged in annular and equidistant distribution are provided on the inner edge of the rotor core 202. The opening of the connecting holes 304 helps to reduce the weight of the rotor core 202, making the rotor core 202 rotate smoothly and stably. At the same time, the welding of multiple pressure blocks 308 helps to increase the contact range of the rotor core 202, making the rotor core 202 clamped stably.

[0035] Specifically, such as Figure 3 , Figure 5 and Figure 6 As shown, screws 307 are provided inside the multiple connecting holes 304, and the two ends of the screws 307 extend to the inner side of the pressure block 308. Nuts 303 are provided on the outer side of the multiple pressure blocks 308. The nuts 303 are threadedly connected to the ends of the screws 307. Through the installation of the multiple screws 307, with the cooperation of the nuts 303, the two ends of the screws 307 are connected to the pressure block 308, thereby making the two jackets 302 firmly clamped to the two ends of the rotor core 202, increasing the stability of the rotor core 202.

[0036] Specifically, such as Figure 6 As shown, a positioning sleeve 306 is installed on one side of each of the multiple pressure blocks 308. The multiple positioning sleeves 306 are engaged with the interior of the multiple connecting holes 304. The end of the screw 307 is slidably connected to the interior of the positioning sleeve 306. The installation of the multiple positioning sleeves 306 facilitates the stable engagement of the pressure block 308 with the rotor core 202, plays a positioning role, and positions the end of the screw 307 so that the screw 307 is located at the center of the interior of the connecting hole 304, preventing the screw 307 from becoming eccentric and affecting the stability of the rotor core 202.

[0037] In use, this invention firstly facilitates the connection of multiple magnets 204 through the installation of the rotor core 202, thereby giving the outer side of the rotor core 202 stable magnetism. Secondly, the installation of flat copper wires 203 inside the stator core 201 facilitates the conversion of electrical energy into an alternating magnetic field, which drives the rotor core 202 to rotate at high speed, converting electrical energy into kinetic energy output. Simultaneously, the installation of six layers of flat copper wires 203 increases the slot fill factor, increases the magnetic field strength, and the close arrangement between the flat wires increases the contact area, making it easier for heat to be conducted to the stator core 201 through the insulation layer, improving heat dissipation. Thirdly, the "V-" arrangement of the magnets 204 improves torque, reduces noise, and provides greater output power, among other advantages. This design also facilitates the use of multiple layers of flat copper wires. The flat copper wire 203 is tightly installed inside the mounting slot 205, ensuring its uniform distribution within the stator core 201 and a stable, uniform magnetic field arrangement. This facilitates stable rotation of the rotor core 202. With the cooperation of multiple air-insulating slots 207, the high magnetic reluctance of air allows for precise control of the path, distribution, and magnitude of the magnetic flux, thereby optimizing the electromagnetic performance, operating efficiency, and reliability of the equipment. The opening of multiple auxiliary slots 206 addresses key issues in motor operation, such as harmonic losses, vibration noise, starting performance, and fault protection, ultimately improving the motor's efficiency, stability, and reliability. The opening of the connecting slot 208 facilitates the installation of the rotating shaft 1, enabling the shaft 1 to support the rotor core 202. This is achieved through the matching of bearings... The rotor core 202 can rotate smoothly and stably inside the stator core 201. The semi-circular slot 402 facilitates the installation of the magnet 204 and the rotor core 202. After installation, the positioning rod 401 is inserted between the two slots 402 to reinforce the magnet 204 and the rotor core 202, making the magnet 204 firm and stable. The installation of the two sleeves 302 facilitates the contact between the two ends of the rotor core 202, making the rotor core 202 installation stable. The keyway 301 facilitates the firm and stable connection between the sleeve 302 and the shaft 1 with the fixed key 305, thereby improving the connection stability between the rotor core 202 and the shaft 1. The connection hole 304 helps to reduce the stress on the rotor core 202. The weight ensures smooth and stable rotation of the rotor core 202. The welding of multiple pressure blocks 308 increases the contact area with the rotor core 202, stabilizing its clamping. The installation of multiple screws 307, in conjunction with nuts 303, connects both ends of the screws 307 to the pressure blocks 308, firmly clamping the two sleeves 302 to both ends of the rotor core 202, increasing its stability. The installation of multiple positioning sleeves 306 facilitates stable engagement between the pressure blocks 308 and the rotor core 202, providing positioning and positioning the ends of the screws 307, ensuring they are located at the center of the connecting hole 304, preventing eccentricity and ensuring the stability of the rotor core 202.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flat wire permanent magnet synchronous motor, characterized by: Including the pivot (1), the pivot (1) is installed with the driving mechanism (2), the driving mechanism (2) is installed with the protection mechanism (4), the pivot (1) is installed with the fastening mechanism (3); The driving mechanism (2) includes rotor core (202), the pivot (1) is installed with rotor core (202), the inside edge of rotor core (202) is equipped with multiple sets of installation slot (205), multiple installation slot (205) is installed with magnetic steel (204) respectively, three "V-1" shape arrangement installation slot (205) is a group, the outside of rotor core (202) is equipped with stator core (201), the inside of stator core (201) is equipped with multiple installation slot (205), the inside of installation slot (205) is installed with six layers of flat copper wire (203).

2. The flat wire permanent magnet synchronous motor of claim 1, wherein: The installation slot (205) is "T" shaped structure, multiple flat copper wire (203) and installation slot (205) inside lamination arrangement, the inside edge of installation slot (205) and stator core (201) is annular equidistant distribution.

3. The flat wire permanent magnet synchronous motor of claim 1, wherein: The inside of rotor core (202) is equipped with multiple air gap (207), the end of air gap (207) is arc structure, multiple air gap (207) is located at the two ends of multiple magnetic steel (204).

4. The flat wire permanent magnet synchronous motor of claim 1, wherein: The outside of rotor core (202) is equipped with multiple annular equidistant distribution auxiliary slot (206), the auxiliary slot (206) is "L" shaped structure, the auxiliary slot (206) is located at the outside of magnetic steel (204).

5. The flat wire permanent magnet synchronous motor of claim 1, wherein: The center of rotor core (202) is equipped with connecting slot (208), the pivot (1) is engaged with the inside of connecting slot (208).

6. The flat wire permanent magnet synchronous motor of claim 1, wherein: The protection mechanism (4) includes clamping groove (402), the inside of rotor core (202) and the side of multiple magnetic steel (204) middle line are respectively equipped with multiple clamping groove (402), the clamping groove (402) is semicircular structure, the positioning rod (401) is connected with the clamping groove (402) between two clamping groove (402), the positioning rod (401) is cylindrical structure.

7. The flat wire permanent magnet synchronous motor of claim 1, wherein: The fastening mechanism (3) includes clamp sleeve (302), the both ends of pivot (1) are respectively installed with clamp sleeve (302), two symmetrical clamp sleeve (302) opposite sides are respectively in contact with the both ends of rotor core (202), the pivot (1) is equipped with key groove (301), two clamp sleeve (302) inside are respectively installed with fixed key (305), the fixed key (305) is engaged with the inside of key groove (301), the clamp sleeve (302) is circular truncated cone structure.

8. The flat wire permanent magnet synchronous motor of claim 7, wherein: The edge of two clamp sleeve (302) is respectively welded with multiple annular equidistant distribution pressing block (308), the pressing block (308) is in contact with the both ends of rotor core (202), the inside edge of rotor core (202) is equipped with multiple annular equidistant distribution connecting hole (304).

9. The flat wire permanent magnet synchronous motor of claim 8, wherein: A plurality of the connecting holes (304) are respectively provided with screw rods (307), both ends of the screw rods (307) respectively extend to the inside of the pressing blocks (308), a plurality of the pressing blocks (308) are respectively provided with nuts (303) on the outside, and the nuts (303) are threadedly connected with the end portions of the screw rods (307).

10. The flat wire permanent magnet synchronous motor of claim 9, wherein: A plurality of the pressing blocks (308) are respectively provided with positioning sleeves (306) on one side, a plurality of the positioning sleeves (306) are respectively clamped with the inside of a plurality of the connecting holes (304), and the end portions of the screw rods (307) are slidingly connected with the inside of the positioning sleeves (306).

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