Motor stator structure of cold-rolled laminated steel core

Abstract

The utility model relates to motor stator structure technical field discloses motor stator structure of cold rolled lamination steel core, including cold rolled lamination core, the inside of cold rolled lamination core is provided with copper wire winding groove, the inside of cold rolled lamination core is provided with hollow slot, the inside of hollow slot is provided with installation clamping groove, the inside of cold rolled lamination core is provided with the positioning hole, the front of cold rolled lamination core is fixedly connected with fixed clamping frame. The utility model discloses through setting up the copper wire winding groove of several that cold rolled lamination core inside sets up to center circumference equidistance distribution, forms the regular winding layout space, makes the enameled copper wire can closely adhere to the core surface, shortens the current path, reduces the resistance loss, reduces the local overheating risk through the uniform distribution simultaneously, and the cold rolling process endows the core with low coercive force characteristics, cooperates the slot shape of precision machining, significantly improves the magnetic permeability, optimizes electromagnetic energy conversion efficiency, and is applicable to the core demand of high -performance motor.

Description

Technical Field

[0001] This utility model relates to the field of electric motor stator structure technology, and in particular to an electric motor stator structure with a cold-rolled laminated steel core. Background Technology

[0002] The stator is a crucial component of motors such as generators and starters. It consists of three main parts: the stator core, the stator windings, and the frame. The stator's primary function is to generate a rotating magnetic field, while the rotor's main function is to be cut by magnetic lines of force within this rotating magnetic field, thereby generating (outputting) current. The Chinese motor parts market is distributed along the southeastern coast and the Yangtze River Delta region.

[0003] The existing cold-rolled laminated steel core stator structure of electric motors is prone to low coercivity characteristics of the core under different processing techniques, which makes it difficult to match the precision-machined slot shape, reduces the magnetic permeability and affects the electromagnetic energy conversion efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a motor stator structure with a cold-rolled laminated steel core.

[0005] This utility model is achieved using the following technical solution: a motor stator structure with a cold-rolled laminated steel core, comprising a cold-rolled laminated iron core, wherein a copper wire winding groove is formed inside the cold-rolled laminated iron core, a hollow groove is formed inside the cold-rolled laminated iron core, an installation slot is formed inside the hollow groove, a positioning hole is formed inside the cold-rolled laminated iron core, a fixing frame is fixedly connected to the front side of the cold-rolled laminated iron core, a fixing protrusion is fixedly connected to the front side of the cold-rolled laminated iron core, a connecting groove is formed inside the cold-rolled laminated iron core, and an installation support groove is formed at the rear end of the cold-rolled laminated iron core.

[0006] Through the above technical solution, a series of circumferentially distributed positioning holes form a precision reference system, ensuring that the cumulative error during the stacking of silicon steel sheets is minimized.

[0007] As a further improvement to the above scheme, the number of copper wire winding grooves is set to several, and the several copper wire winding grooves are distributed equidistantly around the cold-rolled laminated iron core.

[0008] As a further improvement to the above solution, the interior of the cold-rolled laminated iron core is provided with a mounting slot, and the fixing protrusion is fixedly connected to the interior of the fixing frame.

[0009] Through the above technical solution, the combination of the fixed frame and the fixed protrusion forms a rigid constraint: the frame provides circumferential limit, and the protrusion realizes axial locking. The double guarantee ensures that the iron core has no relative displacement during operation, which has a significant effect on suppressing noise caused by electromagnetic vibration, and at the same time simplifies the positioning process of the automated production line.

[0010] As a further improvement to the above solution, the number of positioning holes is set to several, and the several positioning holes are evenly distributed around the cold-rolled laminated iron core as the center. The rear end of the connecting groove is provided with an installation support groove.

[0011] The above technical solution, with the circumferentially equidistant distribution of the connecting groove and the mounting support groove, provides a standardized installation interface for accessories such as motor housing and sensors. The mortise and tenon structure formed by the two ensures assembly accuracy and allows for quick disassembly and assembly, facilitating later maintenance or upgrades.

[0012] As a further improvement to the above scheme, the number of the connecting grooves and mounting support grooves is set to several, and the several connecting grooves and mounting support grooves are distributed equidistantly around the cold-rolled laminated iron core.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention features a series of copper wire winding slots equidistantly distributed around the center circumference of a cold-rolled laminated iron core, forming a regular winding layout. This allows the enameled copper wire to fit tightly against the core surface, shortening the current path and reducing resistance loss. At the same time, the uniform distribution reduces the risk of localized overheating. The cold rolling process imparts low coercivity to the iron core, and the precision-machined slot shape significantly improves magnetic permeability and optimizes electromagnetic energy conversion efficiency, making it suitable for the core requirements of high-performance motors.

[0015] This invention significantly reduces the overall weight by creating a hollow slot, while ensuring the mechanical strength of the iron core. The internal mounting slot provides a precise positioning surface for embedded fixing, which not only meets the centrifugal force bearing requirements when the motor rotates at high speed, but also improves the heat dissipation channel through the hollow design. Combined with the subsequent potting process, it can further enhance the vibration resistance, making it particularly suitable for high dynamic scenarios such as drive motors for new energy vehicles. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 3 This is an enlarged schematic diagram of the structure at point A of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of this utility model from a bottom view.

[0020] Explanation of key symbols:

[0021] 1. Cold-rolled laminated iron core; 2. Copper wire winding groove; 3. Hollow groove; 4. Mounting slot; 5. Positioning hole; 6. Fixing frame; 7. Fixing protrusion; 8. Connecting groove; 9. Mounting support groove. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Example:

[0024] Please combine Figure 1-4 The stator structure of the electric motor with a cold-rolled laminated steel core in this embodiment includes a cold-rolled laminated steel core 1. The cold-rolled laminated steel core 1 has a copper wire winding groove 2 inside, a hollow groove 3 inside, a mounting slot 4 inside the hollow groove 3, a positioning hole 5 inside, a fixing frame 6 fixedly connected to the front side of the cold-rolled laminated steel core 1, a fixing protrusion 7 fixedly connected to the front side of the cold-rolled laminated steel core 1, and a connecting groove 8 inside the cold-rolled laminated steel core 1. The rear end of the sheet iron core 1 is provided with an installation support groove 9. By setting several copper wire winding grooves 2 inside the cold-rolled laminated iron core 1 and distributing them at equal intervals around the center circumference, a regular winding layout space is formed, which allows the enameled copper wire to fit tightly against the surface of the iron core, shortening the current path and reducing resistance loss. At the same time, the uniform distribution reduces the risk of local overheating. The cold rolling process gives the iron core low coercivity characteristics. Combined with the precision-machined groove shape, the permeability is significantly improved and the electromagnetic energy conversion efficiency is optimized, which is suitable for the core requirements of high-performance motors.

[0025] A series of circumferentially distributed positioning holes 5 constitute a precision reference system to ensure that the cumulative error during the stacking of silicon steel sheets is minimized.

[0026] The number of copper wire winding grooves 2 is set to several, and the several copper wire winding grooves 2 are distributed equidistantly around the cold-rolled laminated iron core 1.

[0027] The cold-rolled laminated iron core 1 has an internal mounting slot 4, and the fixing protrusion 7 is fixedly connected to the inside of the fixing frame 6.

[0028] The combination of the fixed frame 6 and the fixed protrusion 7 forms a rigid constraint: the frame provides circumferential limiting and the protrusion achieves axial locking, providing double protection that the iron core has no relative displacement during operation, which has a significant effect on suppressing noise caused by electromagnetic vibration, and at the same time simplifies the positioning process of the automated production line.

[0029] The number of positioning holes 5 is set to several, and the several positioning holes 5 are evenly distributed around the cold-rolled laminated iron core 1. The rear end of the connecting groove 8 is provided with an installation support groove 9.

[0030] The circumferentially equidistant distribution design of the connecting groove 8 and the mounting support groove 9 provides a standardized installation interface for accessories such as motor housing and sensors. The mortise and tenon structure formed by the two ensures assembly accuracy and allows for quick disassembly and assembly, facilitating later maintenance or upgrades.

[0031] The number of connecting slots 8 and mounting slots 9 is set to several. The connecting slots 8 and mounting slots 9 are evenly spaced around the cold-rolled laminated iron core 1. By setting the hollow slots 3, the overall weight is greatly reduced while ensuring the mechanical strength of the iron core. The mounting slots 4 set inside provide a precise positioning surface for embedded fixing. This not only meets the centrifugal force bearing requirements when the motor rotates at high speed, but also improves the heat dissipation channel through the hollow design. Combined with the subsequent potting process, the vibration resistance can be further enhanced, which is especially suitable for high dynamic scenarios such as drive motors of new energy vehicles.

[0032] The implementation principle of the motor stator structure of the cold-rolled laminated steel core in this application embodiment is as follows: By setting several copper wire winding grooves 2 inside the cold-rolled laminated steel core 1 and distributing them at equal intervals around the central circumference, a regular winding layout space is formed, which allows the enameled copper wire to fit tightly against the surface of the core, shortening the current path and reducing resistance loss. At the same time, the uniform distribution reduces the risk of local overheating. The cold rolling process gives the core low coercivity characteristics. Combined with the precision-machined groove shape, the magnetic permeability is significantly improved, and the electromagnetic energy conversion efficiency is optimized, which is suitable for the core requirements of high-performance motors. By setting the hollow grooves 3, the overall weight is greatly reduced while ensuring the mechanical strength of the core. The mounting slots 4 set inside provide a precise positioning surface for embedded fixing, which not only meets the centrifugal force bearing requirements when the motor rotates at high speed, but also improves the heat dissipation channel through the hollow design. Combined with the subsequent potting process, the vibration resistance can be further enhanced, which is especially suitable for high dynamic scenarios such as drive motors for new energy vehicles.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A motor stator structure with a cold-rolled laminated steel core, characterized in that, The cold-rolled laminated iron core (1) has a copper wire winding groove (2) inside, a hollow groove (3) inside, an installation slot (4) inside, a positioning hole (5) inside, a fixing frame (6) fixedly connected to the front of the cold-rolled laminated iron core (1), a fixing protrusion (7) fixedly connected to the front of the cold-rolled laminated iron core (1), a connecting groove (8) inside, and an installation support groove (9) at the rear end of the cold-rolled laminated iron core (1).

2. The motor stator structure with cold-rolled laminated steel core as described in claim 1, characterized in that: The number of copper wire winding grooves (2) is set to several, and the several copper wire winding grooves (2) are distributed equidistantly around the cold-rolled laminated iron core (1).

3. The motor stator structure with cold-rolled laminated steel core as described in claim 1, characterized in that: The cold-rolled laminated iron core (1) has an installation slot (4) inside, and the fixing protrusion (7) is fixedly connected to the inside of the fixing frame (6).

4. The motor stator structure with cold-rolled laminated steel core as described in claim 1, characterized in that: The number of positioning holes (5) is set to several, and the several positioning holes (5) are evenly spaced around the cold-rolled laminated iron core (1). The rear end of the connecting groove (8) is provided with an installation support groove (9).

5. The motor stator structure with a cold-rolled laminated steel core as described in claim 1, characterized in that: The number of the connecting groove (8) and the mounting support groove (9) is set to several, and the several connecting grooves (8) and the mounting support grooves (9) are distributed equidistantly around the cold-rolled laminated iron core (1).

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