Stator and motor

Abstract

The utility model discloses a stator which comprises a plurality of stator iron cores and a plurality of stator windings, and the stator iron cores are arranged along the circumferential direction. The stator winding is wound on the stator iron core, the stator winding at least comprises one branch, each branch comprises a plurality of layers of three-phase wave winding wires which are connected in series, each layer of three-phase wave winding wire is formed in advance, and the branches are connected in parallel. According to the stator disclosed by the embodiment of the utility model, each layer of three-phase wave winding of the stator winding is preformed, and during installation, only each layer of three-phase wave winding needs to be integrally assembled on the stator iron core, so that the assembling difficulty and complexity can be greatly reduced, the operation is simple, the assembling is convenient and fast, and the assembling efficiency can be improved. The utility model also discloses a motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and more specifically, to a stator and a motor. Background Art

[0002] Flat wire motors differ from round wire motors in the way the copper wire is formed. Flat wire helps improve the motor's slot fill rate. This increased slot fill rate means more copper wire can be packed into the same space, generating a stronger magnetic field and increasing power density. Therefore, in the long term, flat wire motors are the future development direction of drive motors. Traditional stator winding assembly requires inserting all the flat wire into the stator slots before soldering, which is a complex operation.

[0003] Therefore, how to reduce the complexity and difficulty of stator winding assembly and improve assembly efficiency has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a stator to reduce the complexity and difficulty of stator winding assembly and improve assembly efficiency.

[0005] Another core of the present invention is to disclose a motor including the above-mentioned stator.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A stator, comprising:

[0008] The stator core includes a plurality of stator cores arranged along the circumferential direction;

[0009] The stator winding is wound on the stator core. The stator winding includes at least one branch. Each branch includes several layers of three-phase wave windings connected in series. Each layer of three-phase wave windings is pre-formed, and each branch is connected in parallel.

[0010] Optionally, in the above stator, each layer of three-phase wave windings is woven from three single-phase wave windings, and the single-phase wave windings include a starting end and an ending end.

[0011] Optionally, in the above stator, the single-phase wave winding includes three wave windings, and the three wave windings are connected in series through a wave winding connecting line.

[0012] Optionally, in the above stator, the wave winding wire is connected to the wave winding wire connecting wire by welding.

[0013] Optionally, in the above stator, the pitch of the wave winding wire includes 4 and 5.

[0014] Optionally, in the above stator, each branch includes the same number of layers of three-phase wave windings.

[0015] Optionally, in the above stator, the wave-wound wire is a flat wire.

[0016] Optionally, in the above stator, the single wave winding wire is a complete wire or is formed by connecting several wires.

[0017] Optionally, in the above stator, the number of stator slots in the stator core is 36.

[0018] A motor includes a stator, which is the stator described above.

[0019] It can be seen from the above scheme that in the stator disclosed in the embodiment of the utility model, each layer of the three-phase wave winding of the stator winding is pre-formed. During installation, it is only necessary to assemble the three-phase wave winding of each layer as a whole onto the stator core, which can greatly reduce the difficulty and complexity of assembly, is simple to operate, and is convenient to assemble, which can improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A winding diagram of a stator winding disclosed in an embodiment of the present utility model;

[0022] Figure 2 A schematic structural diagram of a stator core disclosed in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of multiple stator cores disclosed in an embodiment of the present utility model;

[0024] Figure 4 A schematic structural diagram of a wave wound wire disclosed in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic structural diagram of a single-phase wave winding disclosed in an embodiment of the present utility model;

[0026] Figure 6 This is a winding diagram of a single-phase wave winding disclosed in an embodiment of the present utility model;

[0027] Figure 7 This is a schematic structural diagram of a single-layer three-phase wave winding disclosed in an embodiment of the present utility model;

[0028] Figure 8 A partially enlarged view of the wave winding wire disclosed in an embodiment of the present utility model;

[0029] Figure 9 This is a schematic structural diagram of a stator disclosed in an embodiment of the present utility model.

[0030] Among them, 10 is the stator core, 20 is the stator winding, 21 is the three-phase wave winding, 210 is the single-phase wave winding, 211 is the wave winding, the first wave winding 211a, the second wave winding 211b, the third wave winding 211c, and 212 is the wave winding connecting line. DETAILED DESCRIPTION

[0031] The core of the utility model is to disclose a stator to reduce the complexity and difficulty of stator winding assembly and improve assembly efficiency.

[0032] Another core of the present invention is to disclose a motor including the above-mentioned stator.

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figure 9 As shown, an embodiment of the present invention discloses a stator, including a stator core 10 and a stator winding 20 .

[0035] The number of stator cores 10 is multiple and they are arranged along the circumferential direction, such as Figure 3 shown. Figure 2 Schematic diagram of the structure of the stator core 10, the stator core 10 is the stator core 10 of a common motor in the prior art, Figure 2 The main purpose of the present invention is to facilitate readers to understand the structure of the stator core 10. The present invention does not specifically change the structure of the stator core 10.

[0036] The stator winding 20 is wound on the stator core 10. The stator winding 20 includes at least one branch. Each branch includes several layers of three-phase wave windings 21 connected in series. In order to reduce the difficulty of assembly, each layer of three-phase wave windings 21 is pre-formed and each branch is connected in parallel. Figure 1 2 is a winding diagram of the stator winding, in which a branch is set and four layers of three-phase wave winding 21 are set as an example for explanation. It should be noted that the four layers in the figure are only examples and cannot be used as a limitation. The circles in the figure represent connection points.

[0037] In the stator disclosed in the embodiment of the present invention, each layer of three-phase wave windings 21 of the stator winding 20 is pre-formed. During installation, it is only necessary to assemble the three-phase wave windings 21 of each layer as a whole onto the stator core 10, which can greatly reduce the difficulty and complexity of assembly, is simple to operate, and is convenient to assemble, thereby improving assembly efficiency.

[0038] In some specific embodiments, each layer of three-phase wave winding 21 is woven from three single-phase wave windings 210. The specific structural diagram is shown in FIG. Figure 7 As shown, each single-phase wave winding 210 includes a starting end and an ending end. The structural diagram of the single-phase wave winding 210 is shown in FIG. Figure 5 As shown, for the three-phase wave winding 21, it includes three starting ends and three ending ends. Figure 8 This is a partially enlarged view of the winding of the wave winding line 211.

[0039] like Figure 5 and Figure 6 As shown, the stator disclosed in the embodiment of the present invention, the single-phase wave winding 210 includes three wave windings 211, and the three wave windings 211 are connected in series through the wave winding connecting line 212. The structural diagram of the wave winding 211 is shown in FIG. Figure 4 As shown, the wave winding line 211 includes a starting end and an ending end. The structural diagram of the single-phase wave winding line 210 is shown in FIG. Figure 5 As shown in the figure, the numbers indicate that there are 36 stator slots, among which the winding route of the first wave winding wire 211a is: 1-5-10-14-19-23-28-32; the winding route of the second wave winding wire 211b is: 36-32-27-23-18-14-9-5; the winding route of the third wave winding wire 211c is: 1-33-28-24-19-15-10-6. According to the winding routes of the three wave winding wires 211, it can be seen that the pitch of the wave winding wire 211 includes 4 and 5, and the pitches 4 and 5 alternate. Taking the first wave winding wire 211a as an example, the pitch is 4-5-4-5-4-5-4. This setting method can reduce the mutual interference of the wave winding wires 211 and improve the slot fill rate.

[0040] The starting end of the second wave winding line 211b is connected to the ending end of the first wave winding line 211a through the wave winding line connecting line 212, specifically, they can be connected by welding. The starting end of the third wave winding line 211c is connected to the ending end of the second wave winding line 211b, specifically, they can be connected by welding. Figure 6 As shown in the figure, the circles in the figure represent welding points.

[0041] In some specific embodiments, a single corrugated wire 211 is a complete wire, which can reduce the number of welding points and thus reduce the difficulty of construction. In other specific embodiments, a single corrugated wire can be welded by multiple wires.

[0042] In the stator disclosed in the embodiment of the present utility model, the wave winding wires are all flat wires.

[0043] In addition, an embodiment of the present invention further discloses a motor including the above-mentioned stator, and thus has all the technical effects of the above-mentioned stator, which will not be described in detail here.

[0044] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0045] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0046] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0047] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help you understand the core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A stator, characterized in that: include: A stator core (10), the stator core (10) comprising a plurality of stator cores arranged in a circumferential direction; A stator winding (20), the stator winding (20) is wound on the stator core (10), the stator winding (20) includes at least one branch, each branch includes a plurality of layers of three-phase wave windings (21) connected in series, each layer of the three-phase wave windings (21) is pre-formed, and each branch is connected in parallel.

2. The stator according to claim 1, characterized in that Each layer of the three-phase wave winding (21) is woven from three single-phase wave windings (210), and the single-phase wave winding (210) includes a starting end and an ending end.

3. The stator according to claim 2, characterized in that The single-phase wave winding line (210) includes three wave winding lines (211), and the three wave winding lines (211) are connected in series via a wave winding line connecting line (212).

4. The stator according to claim 3, characterized in that The wave winding wire (211) is connected to the wave winding wire connecting wire (212) by welding.

5. The stator according to claim 1, wherein: The pitch of the wave winding line (211) includes 4 and 5.

6. The stator according to claim 1, wherein: The number of layers of the three-phase wave winding (21) included in each branch is the same.

7. The stator according to claim 1, wherein: The number of stator slots of the stator core (10) is 36.

8. The stator according to any one of claims 1 to 7, characterized in that: A single wave winding wire (211) is a complete wire or is formed by connecting several wires.

9. The stator according to any one of claims 1 to 7, characterized in that: The wave winding wire (211) is a flat wire.

10. A motor comprising a stator, characterized in that: The stator is the stator according to any one of claims 1 to 9.

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