A stator coil winding

Abstract

The utility model discloses a kind of stator coil windings, it is related to motor technical field.The stator coil winding includes the multiple layers annular coil formed by single wire winding, multiple layers annular coil includes the multiple layers inner ring coil and multiple layers outer ring coil of intercommunication, the bottom layer of multiple layers inner ring coil is equipped with first wire end, first wire end extends outward, the bottom layer of multiple layers outer ring coil is equipped with second wire end, second wire end extends outward.The stator coil winding is wound by single wire, only needs a set of mould to be wound, reduces production procedure and the workload of operator.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a stator coil winding. Background Technology

[0002] The stator winding is the core component of the motor stator. It consists of insulated wire wound into coils according to a specific pattern and embedded in the stator core slots. Its function is to generate a magnetic field or induce an electromotive force, thereby realizing the conversion between electrical energy and mechanical energy. Currently, some existing stator winding structures include... Figure 1 As shown, it is assembled from multiple inner loop coils and multiple outer loop coils. This structure of multiple inner loop coils and multiple outer loop coils has the function of optimizing magnetic field distribution. However, the multiple inner loop coils and multiple outer loop coils need to be wound separately with a set of molds, and then the separately wound multiple inner loop coils and multiple outer loop coils are assembled to form stator coil windings. The production process is complicated and increases the workload of operators. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a stator coil winding that is made of a single strand of wire and only requires one set of molds for winding, thereby reducing the production process and the workload of operators.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A stator coil winding includes a multi-layered ring coil formed by winding a single strand of wire. The multi-layered ring coil includes a multi-layered inner ring coil and a multi-layered outer ring coil that are connected. The bottom layer of the multi-layered inner ring coil has a first wire end that extends outward, and the bottom layer of the multi-layered outer ring coil has a second wire end that extends outward.

[0006] In some embodiments, a gap is provided between the outer ring of the multilayer inner ring coil and the inner ring of the multilayer outer ring coil.

[0007] In at least one embodiment, the top layer of the multilayer inner loop coil is provided with a transition wire that communicates with the top layer of the multilayer outer loop coil.

[0008] In some embodiments, the multilayer inner loop coil and the multilayer outer loop coil are matched with the cross-sectional shape of the stator teeth of the stator core, and the multilayer inner loop coil is used to be wound on the stator teeth of the stator core.

[0009] In some embodiments, the first wire end is parallel to the second wire end.

[0010] In some embodiments, the single-strand conductor is a flat wire.

[0011] Compared with the prior art, this utility model achieves at least the following beneficial effects:

[0012] This invention only requires a set of improved molds for winding. First, a multi-layer inner ring coil is wound. When the winding reaches the top layer of the multi-layer inner ring coil, it is led out to the outer ring through a transition wire. Then, the multi-layer outer ring coil is wound. Thus, a stator coil winding can be formed by winding a single strand of wire, which can reduce production steps and significantly reduce the workload of operators. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the existing stator coil winding structure;

[0014] Figure 2 This is a schematic diagram of the structure of an embodiment of this application;

[0015] Figure 3 This is a schematic diagram of the underlying structure of an embodiment of this application;

[0016] Figure 4 This is a schematic diagram of the top-level structure of an embodiment of this application;

[0017] Figure 5 This is a schematic diagram of the device installed on the stator core according to an embodiment of this application.

[0018] The diagram is labeled as follows: 1. Single-strand wire; 2. Multi-layer loop coil; 21. Multi-layer inner loop coil; 211. First wire end; 22. Multi-layer outer loop coil; 221. Second wire end; 3. Transition wire; 4. Stator core; 41. Stator tooth. Detailed Implementation

[0019] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of this application more complete and to fully convey the concept of the present application to those skilled in the art.

[0020] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] like Figures 2-5 As shown in the embodiment of this application, a stator coil winding includes a multi-layered annular coil 2 formed by winding a single-strand wire 1. The multi-layered annular coil 2 includes a multi-layered inner annular coil 21 and a multi-layered outer annular coil 22 that are connected. The bottom layer of the multi-layered inner annular coil 21 is provided with a first wire end 211, which extends outward. The bottom layer of the multi-layered outer annular coil 22 is provided with a second wire end 221, which extends outward.

[0022] Specifically, there is a gap between the outer ring of the multi-layer inner ring coil 21 and the inner ring of the multi-layer outer ring coil 22, which provides good heat dissipation and facilitates winding; the top layer of the multi-layer inner ring coil 21 is provided with a transition wire 3 that communicates with the top layer of the multi-layer outer ring coil 22.

[0023] The multi-layer inner loop coil 21 and the multi-layer outer loop coil 22 are matched with the cross-sectional shape of the stator teeth 41 of the stator core 4, and the multi-layer inner loop coil 21 is used to wind on the stator teeth 41 of the stator core 4.

[0024] The first conductor end 211 is parallel to the second conductor end 221.

[0025] The single-strand conductor 1 is a flat wire. The cross-sectional shape of the flat wire allows the single-strand conductor 1 to be arranged more tightly during winding. In the stator slot of the motor, the stator coil winding of the flat wire can better fill the slot space. In contrast, the round wire has a lower slot fill factor due to the circular gaps between the conductors. Furthermore, the cross-sectional area of ​​the flat wire is more uniform, increasing the effective conductive area of ​​the conductor and resulting in lower resistance and copper loss.

[0026] This invention only requires a set of improved molds for winding. First, a multi-layer inner ring coil 21 is wound. When the winding reaches the top layer of the multi-layer inner ring coil 21, it is led out to the outer ring through the transition wire 3. Then, the multi-layer outer ring coil 22 is wound. Thus, the stator coil winding can be formed by winding a single strand of wire 1, which can reduce the production process and significantly reduce the workload of operators.

[0027] It should be understood that all the above embodiments are exemplary and not restrictive. Any modifications, equivalent changes and alterations made by those skilled in the art to the specific embodiments described above under the concept of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A stator coil winding, characterized in that: The invention includes a multi-layered loop coil formed by winding a single strand of wire. The multi-layered loop coil includes interconnected multi-layered inner loop coils and multi-layered outer loop coils. The bottom layer of the multi-layered inner loop coil has a first wire end that extends outward. The bottom layer of the multi-layered outer loop coil has a second wire end that extends outward.

2. The stator coil winding according to claim 1, characterized in that: A gap is provided between the outer ring of the multi-layer inner ring coil and the inner ring of the multi-layer outer ring coil.

3. The stator coil winding according to claim 2, characterized in that: The top layer of the multi-layer inner loop coil is provided with a transition wire that communicates with the top layer of the multi-layer outer loop coil.

4. The stator coil winding according to claim 1, characterized in that: The multi-layer inner loop coil and multi-layer outer loop coil are matched with the cross-sectional shape of the stator teeth of the stator core, and the multi-layer inner loop coil is used to wind around the stator teeth of the stator core.

5. The stator coil winding according to claim 1, characterized in that: The first wire end is parallel to the second wire end.

6. The stator coil winding according to claim 1, characterized in that: The single-strand conductor is a flat wire.

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