CN220896389U

CN220896389U - Motor winding and motor thereof

Info

Publication number: CN220896389U
Application number: CN202322104466.3U
Authority: CN
Inventors: 岳帅
Original assignee: Hangzhou Jonathon Electromechanical Technology Co ltd
Current assignee: Hangzhou Jonathon Electromechanical Technology Co ltd
Priority date: 2023-08-06
Filing date: 2023-08-06
Publication date: 2024-05-03
Anticipated expiration: 2033-08-06

Abstract

The invention provides a motor winding and a motor thereof, and belongs to the field of motors. The electric motor comprises wires and a stator, wherein the wires are closely arranged to form a plurality of strip-shaped wire arranging groups, the two wire arranging groups are connected in series to form a winding group of a loop, the current directions of the wires in one wire arranging group are the same, and the wire arranging surface of the wire arranging group is a radiating surface. The invention has the advantages that the wires are arranged to form a flat cable group, and the wider double sides are used as radiating surfaces to be tightly attached to the stator core for radiating, so that the radiating area is large, the radiating effect is good, the thickness in the non-radiating direction is reduced, the temperature difference on the section of the wires is reduced, the skin effect is greatly reduced, and meanwhile, the working current is improved to the maximum extent, thereby maximizing the power.

Description

Motor winding and motor thereof

Technical Field

The invention belongs to the technical field of motors, and particularly relates to a motor winding and a motor thereof.

Background

Motors are being used as a hub for energy conversion and are expected to have high conversion and high utilization. In order to improve the dynamic property and economy of the motor in a limited volume. The drive motor is continuously developed to the direction of high power density and high motor efficiency.

In order to set more wires in the same size volume, the enameled wires are generally orderly arranged in the traditional motor, but because gaps exist between round wires and cannot be filled, the slot filling rate is lower, the copper consumption of windings is larger, and in order to improve the effective copper area, the flat copper wires are utilized to reduce the gap between the wires, such as a hairpin winding motor, and more effective copper conductors are arranged in the same volume. The hairpin winding motor has flat copper wire as winding wire and bent hairpin to embed the winding wire into stator slot.

The scheme improves the groove filling rate to a certain extent, and improves the power density and the heat radiation performance of the motor to a certain extent. However, in the design of the multilayer hairpin winding, the contact area of the hairpin winding, especially the hairpin winding arranged in the middle, and the stator core is small, the conduction of the heat dissipation effect is affected, and the multilayer hairpin winding also has a plurality of layers of welding points, so that the reliability and consistency of the motor are greatly affected, and meanwhile, the serious skin effect is also present.

Disclosure of Invention

The application aims to provide a motor winding which solves the technical problems.

Another object of the present application is to provide an electric machine employing the above-described electric machine winding.

In order to achieve the above object, the present application has the following technical scheme:

The motor winding comprises wires and a stator, wherein the wires are closely arranged to form a plurality of strip-shaped winding groups, the two winding groups are connected in series to form a winding group of a loop, the current directions of the wires in one winding group are the same, and the winding surface of the winding group is a radiating surface.

In the motor winding, the outer layer of the wire is provided with the insulating layer, and the wire is rectangular in section or circular in section.

In the motor winding, the wires are rectangular with unequal length and width, the narrow surfaces of the adjacent wires with the same belt surface are closely abutted, and the wide surfaces on the same side form radiating surfaces.

In the motor winding, the winding group is formed by spirally winding a wire, two winding displacement groups are formed, two ends of the two winding displacement groups are respectively bent to form a serial connection part, and two ends of the wire are electric connection parts.

In the motor winding, the flat cable groups are formed by closely arranging a plurality of wires, one ends of the two flat cable groups are provided with the power connection blocks, and one ends of the flat cable groups, which are far away from the power connection blocks, are power connection positions.

In the motor winding, the winding wire group is single-layer or multi-layer in the vertical direction of the belt surface, and two winding wire components in the winding wire group are arranged on two sides of a plane vertical to the belt surface of the two winding wire groups.

The motor adopting the motor winding comprises a stator core and a rotor, wherein the stator core is disc-shaped, radial winding grooves are uniformly formed in the stator core, winding groups are embedded in the winding grooves, and the outer side wall of each winding group is tightly attached to the side wall of each winding groove.

In the motor winding described above, the winding groups in the same pole phase are connected in series or in parallel, and the winding groups not belonging to the same pole phase do not belong to one loop.

The motor adopting the motor winding comprises a stator core and a rotor, wherein the stator core is barrel-shaped, the winding displacement groups are uniformly distributed and embedded on the side wall of the stator core along the axial direction of the stator core, and the outer side wall of the winding displacement groups is tightly attached to the side wall of a winding groove.

In the motor winding, the winding groups in the same pole phase are connected in series or in parallel, and the winding groups which do not belong to the same pole item do not belong to a loop.

Compared with the prior art, the application has the beneficial effects that:

1. The wires are arranged to form a flat cable group, and the wider double sides are used as radiating surfaces to be tightly attached to the stator core for radiating, so that the radiating area is large, the radiating effect is good, the thickness in the non-radiating direction is reduced, the temperature difference on the section of the wires is reduced, the skin effect is greatly reduced, and meanwhile, the working current is improved to the maximum extent, so that the power maximization is achieved.

2. The motor is formed by coiling and arranging the conducting wires, is simple to manufacture, can meet the requirement of manufacturing any voltage, has few connecting points, high consistency, high material utilization rate and high reserve power, and can adjust the coil according to different working voltages.

3. The eddy current loss is reduced to the maximum extent, the eddy current is reduced, the energy loss is reduced, and the energy utilization rate is improved.

4. The strip conductor can improve the radiating surface, reduce the gradient of the temperature generated by the current passing through the conductor, is easier to mold and process, ensures the implementation of the process and is a more reliable product.

5. Compared with the hairpin winding, the serial-parallel connection of the windings can greatly reduce welding connection points, and the card type embedding mode is adopted, so that the process is simplified, and the reliability of the product is greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of a winding set according to the present invention.

Fig. 2 is a schematic structural diagram of another winding set provided by the present invention.

Fig. 3 is an enlarged view of fig. 2 at a provided by the present invention.

Fig. 4 is a schematic cross-sectional view of a winding unit according to the present invention.

Fig. 5 is a schematic diagram of an axial flux motor provided by the present invention.

Fig. 6 is a schematic diagram of a radial flux motor provided by the present invention.

In the figure: the wire winding device comprises a wire 1, a wire arrangement group 2, a wire winding group 3, a radiating surface 4, a serial connection part 5, a power connection part 6, a power connection block 7, a stator core 8, a rotor 9 and a winding slot 10.

Detailed Description

The technical scheme of the invention is further described in detail below with reference to the attached drawings and the detailed description.

Example 1

The motor winding comprises a wire 1 and a stator, wherein the wire 1 is tightly arranged to form a plurality of strip-shaped winding groups 2, the two winding groups 2 are connected in series to form a winding group 3 of a loop, the current directions of the wires 1 in one winding group 2 are the same, and the winding surface of the winding group 2 is a radiating surface 4. After the winding group 3 is electrified, current is generated in the winding group 3, and as the current directions in the winding group 3 are consistent, a corresponding magnetic field can be generated, and the current directions are controlled to change the magnetic field directions, namely the rotor for driving the permanent magnets can be used for rotating.

The wires 1 are arranged to form the flat cable group 2, and the wider double sides are used as radiating surfaces to be tightly attached to the stator core for radiating, so that the radiating area is large, the radiating effect is good, the thickness in the non-radiating direction is reduced, the temperature difference on the section of the wires is reduced, the skin effect is greatly reduced, and meanwhile, the working current is improved to the maximum extent, so that the power maximization is achieved.

Preferably, the outer layer of the wire 1 is provided with an insulating layer, and the wire 1 is rectangular in cross section or circular in cross section. The strip conductors are formed by arranging the wires, so that the slot filling rate of the stator winding slot is greatly improved, the stabbing pain density is further improved, and the power of the motor under the equal volume is further improved. Those skilled in the art can also use wires with circular cross sections, and because the wires 1 are thin, the gaps between the wires 1 are small.

Further, the wires 1 are rectangular with unequal length and width in cross section, the narrow faces of the adjacent wires 1 with the same strip face are closely abutted, and the radiating faces are formed on the same side wide faces. The strip conductor can improve the radiating surface, reduce the gradient of the temperature generated by the current passing through the conductor, is easier to mold and process, ensures the implementation of the process and is a more reliable product.

Preferably, the winding group 3 is formed by spirally winding a wire 1, two winding groups 2 are formed, two ends of the two winding groups 2 are respectively bent to form a series part 5, and two ends of the wire 1 are electric connection parts 6. The motor is formed by coiling and arranging the conducting wires, is simple to manufacture, can meet the requirement of manufacturing any voltage, has few connecting points, high consistency, high material utilization rate and high reserve power, and can adjust the coil according to different working voltages.

Furthermore, the winding groups 2 are multi-layered in the direction perpendicular to the belt surface, and two winding groups 2 in the winding group 3 are respectively arranged at two sides of a plane perpendicular to the belt surface of the two winding groups 2. The number of layers of the flat cable group 2 can be designed according to the working voltage by a person skilled in the art, motors with any voltage requirements can be manufactured, the connection points are few, the consistency is high, the material utilization rate is high, and the reserve power is high.

Example two

The basic principle of the second embodiment is the same as that of the first embodiment, except that:

The flat cable group 2 is formed by closely arranging a plurality of wires 1, one ends of the two winding groups 3 are provided with power connection blocks, and one ends of the winding groups 3, which are far away from the power connection blocks 7, are power connection positions.

Preferably, the power receiving block 7 connects two winding groups in series, and when a plurality of winding groups 2 exist in the winding group 3, the winding groups are connected in parallel with the winding groups in the winding groups at the power receiving block 7.

Example III

The axial flux motor adopting the motor winding comprises a stator core 8 and a rotor 9, wherein the stator core 8 is disc-shaped, radial winding grooves are uniformly formed in the stator core 8, the winding groups 3 are embedded in the winding grooves 10, and the outer side walls of the winding groups 2 are tightly attached to the side walls of the winding grooves 10.

The winding groups 3 in the same pole item are connected in series or in parallel, and the winding groups 3 which do not belong to the same pole item do not belong to a loop.

Example IV

The motor adopting the motor winding comprises a stator core 8 and a rotor 9, wherein the stator core 8 is barrel-shaped, the winding displacement groups 2 are uniformly distributed and embedded on the side wall of the stator core 8 along the axial direction of the stator core, and the outer side wall of the winding displacement groups 2 is tightly attached to the side wall of a winding groove 10.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as the wire 1, the winding group 2, the winding group 3, the heat radiating surface 4, the serial connection portion 5, the power receiving portion 6, the power receiving block 7, the stator core 8, the rotor 9, the winding slot 10, etc. are used more herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.

Claims

1. The motor winding comprises a wire (1) and a stator, and is characterized in that the wire (1) is tightly arranged to form a plurality of strip-shaped winding groups (2), the two winding groups (2) are connected in series to form a winding group (3) of a loop, the current directions of the wire (1) in one winding group (2) are the same, and the winding surface of the winding group (2) is a radiating surface (4).

2. A motor winding according to claim 1, characterized in that the outer layer of the wire (1) is provided with an insulating layer, the wire (1) being rectangular in cross-section or circular in cross-section.

3. A motor winding according to claim 2, wherein the wires (1) are rectangular with unequal length and width, and the narrow faces of adjacent wires (1) with the same strip face are closely abutted and the same side wide faces form radiating faces.

4. A motor winding according to claim 3, wherein the winding group (3) is formed by spirally winding a wire (1) to form two winding displacement groups (2), and two ends of the two winding displacement groups (2) are respectively bent to form a series part (5), and two ends of the wire (1) are electric connection parts (6).

5. The motor winding according to claim 4, wherein the winding arrangement group (2) is formed by closely arranging a plurality of wires (1), one end of each of the two winding groups (3) is provided with a power connection block (7), and one end of each of the winding groups (3) far away from the power connection block (7) is a power connection position.

6. A motor winding according to claim 4 or 5, wherein the winding displacement groups (2) are single-layered or multi-layered in the direction perpendicular to the belt surface, and two winding displacement groups (2) in the winding groups (3) are separately arranged on two sides of a plane perpendicular to the belt surface of the two winding displacement groups (2).

7. A motor adopting the motor winding as claimed in any one of claims 1-6, characterized by comprising a stator core (8) and a rotor (9), wherein the stator core (8) is disc-shaped, radial winding grooves (10) are uniformly formed in the stator core (8), the winding groups (3) are embedded in the winding grooves (10), and the outer side walls of the winding groups (2) are tightly attached to the side walls of the winding grooves (10).

8. An electric machine according to claim 7, characterized in that the winding groups (3) in the same pole item are connected in series or in parallel, the winding groups (3) not belonging to the same pole item not belonging to one circuit.

9. A motor according to any one of claims 1-6, comprising a stator core (8) and a rotor (9), wherein the stator core (8) is barrel-shaped, the winding displacement groups (2) are uniformly embedded on the side wall of the stator core (8) along the axial direction of the stator core (), and the outer side wall of the winding displacement groups (2) is tightly attached to the side wall of the winding slot (10).

10. An electric machine according to claim 9, characterized in that the winding groups (3) in the same pole item are connected in series or in parallel, the winding groups (3) not belonging to the same pole item not belonging to one circuit.