Stator wiring structure and motor

Abstract

The utility model belongs to the technical field of motor equipment, and particularly relates to a stator wiring structure, which comprises a plurality of stator coils and a stator iron core, the stator coils are wound on the stator iron core and are sequentially distributed along the circumferential direction of the stator iron core, each stator coil is provided with two lead-out wire heads, and the lead-out wire heads are wound on the stator iron core. End portions of the plurality of stator coils are directly and firmly bound by polyester wave bands, and lead-out wire ends are directly and mutually overlapped and firmly welded. According to the stator wiring structure, an end hoop and a collector ring are omitted, the polyester wave belt is directly used for firmly binding the end parts of the stator coils, the leading-out wire heads are directly and mutually overlapped and firmly welded, and the polyimide film and the glass tape are used for firmly binding, so that the direct use of a user is not influenced, and the installation of the formed coils is also convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor equipment, and particularly relates to a stator connection structure and a motor. Background Art

[0002] Typically, formed coils utilize a slip-ring structure for end wiring, collecting the three-phase currents on their respective slip rings. These currents are then routed to the terminal box via copper busbars. Since both the slip-rings and the copper busbars are exposed metal components, they require insulation wrapping. Furthermore, slip-rings take up considerable space, and the copper busbars also require a specific location for routing. This structure is clearly unsuitable for low-voltage three-phase asynchronous motors, as space is limited and grounding is a common problem. Therefore, a stator wiring structure and motor were proposed. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a stator connection structure and a motor to solve the above-mentioned problems in the background technology.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A stator connection structure includes multiple stator coils and a stator core. The stator coils are wound around the stator core and distributed in sequence along the circumference of the stator core. Each stator coil has two lead-out wire ends. The ends of the multiple stator coils are directly tied and secured with polyester tape, and the lead-out wire ends are directly overlapped and welded to each other for secure security.

[0006] By adopting the above structural design, the stator wiring structure eliminates the end clamps and bus rings, and directly uses polyester tape to firmly bind the ends of the stator coils, and directly overlaps and welds the lead wires to each other firmly, and uses polyimide film and glass ribbon to wrap them firmly. This does not affect the user's direct use and also facilitates the installation of the formed coils.

[0007] Furthermore, the lead-out wire ends are overlapped and welded with each other and then firmly wrapped with a polyimide film.

[0008] Furthermore, the lead-out wire ends are overlapped and welded with each other and then securely wrapped with glass ribbons.

[0009] Furthermore, the stator core is provided with a plurality of rectangular slots arranged in sequence along the circumferential direction for mounting the stator coils;

[0010] The stator coils correspond to the rectangular slots one by one, and the rectangular slots are open slot structures, which are convenient for inserting the formed coils.

[0011] Furthermore, the slot wedges at the mouth of the rectangular slots are magnetic wedges, which can reduce the slot's impact on the air gap magnetic field. The open slot structure, while advantageous for inserting formed coils, also introduces new challenges. Open slots can degrade motor performance, such as increased losses and ripple. To mitigate these drawbacks, magnetic wedges are used instead. The use of magnetic wedges reduces the slot's impact on the air gap magnetic field, allowing the open slot to achieve electromagnetic properties similar to those of a semi-open or semi-closed slot.

[0012] Furthermore, a portion of the lead wire and cable is left for welding connection. Using this new structure, the end length is well controlled, the cable is highly maneuverable, and the outer layer of insulation structure does not need to worry about insulation problems. It is simple and easy to operate.

[0013] A motor comprises the stator connection structure and a casing, wherein the stator core is installed in the casing.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The stator wiring structure eliminates the end hoop and slip ring, and uses polyester tape to directly tie the stator coil ends firmly. The lead wire ends are directly overlapped and welded to each other firmly, and are firmly wrapped with polyimide film and glass ribbon. This does not affect the direct use of users and is also conducive to the use of coil structures in limited spaces.

[0016] 2. The open slot structure is conducive to the embedding of formed coils, but it also brings new problems. The use of open slots will deteriorate the performance of the motor, such as increased loss and pulsation. In order to reduce this defect, the slot wedges at the slot mouth are replaced with magnetic slot wedges. The use of magnetic slot wedges can reduce the impact of the slot on the air gap magnetic field, allowing the open slot to obtain the electromagnetic characteristics of a semi-open slot or a semi-closed slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an embodiment of a stator connection structure of the utility model;

[0018] Figure 2 for Figure 1 Cross-sectional view at A-A in the middle;

[0019] Figure 3 This is a schematic structural diagram of the stator coil in the present utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure of the lead-out copper wire and the inter-electrode connection wire in the present utility model;

[0021] The reference numerals in the drawings of the specification include:

[0022] Stator coil (1), lead-out wire head (11), stator core (2), glass fiber (3), polyimide film (4), magnetic slot wedge (5), polyester belt (6), cable (7). DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0024] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] In the description of this utility model, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, such term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Example 1:

[0028] like Figure 1-4As shown, the utility model. Specifically, a stator connection structure includes a plurality of stator coils 1 and a stator core 2. The stator coils 1 are wound on the stator core 2 and are distributed in sequence along the circumference of the stator core 2. Each stator coil 1 has two lead-out wire ends 11. The ends of the plurality of stator coils 1 are directly tied firmly with polyester tape 6, and the lead-out wire ends 11 are directly overlapped and welded firmly. By adopting the above-mentioned structural design, the stator connection structure eliminates the end hoop and the bus ring, and directly uses polyester tape to tie the ends of the stator coil 1 firmly, and directly overlaps and welds the lead-out wire ends 11 firmly with each other, and uses polyimide film 4 and glass fiber 3 to wrap firmly. This does not affect the direct use of the user and is also convenient for the installation of the formed coil.

[0029] The lead wire ends 11 are overlapped and welded to each other and then firmly wrapped with a polyimide film 4 .

[0030] The lead wire ends 11 are overlapped and welded to each other or are firmly wrapped with glass fiber 3 tapes.

[0031] In this embodiment, the stator core 2 is provided with a plurality of rectangular slots arranged in sequence along the circumferential direction for mounting the stator coils 1; the stator coils 1 correspond one to one with the rectangular slots, and the rectangular slots are open slot structures, which are conducive to the embedding of the formed coils.

[0032] In this embodiment, the slot wedges at the mouth of the rectangular slot are magnetic wedges 5, which can reduce the slot's impact on the air gap magnetic field. While this slot type facilitates coil insertion, it also introduces new challenges. Open slots can degrade motor performance, such as increased losses and ripple. To mitigate these drawbacks, magnetic wedges are used instead. These reduce the slot's impact on the air gap magnetic field, allowing the open slot to achieve electromagnetic properties similar to a semi-open or semi-closed slot. Six lead-out wire ends 11 are left for welding to the cable 7. The most direct benefit of this structure is a reduction in labor steps and material usage. Conventional structures required soldering to connect the copper wire to the slip ring, as well as insulation wrapping throughout the entire coil. The copper busbars required process-critical design considerations, particularly proper insulation treatment within the terminal box. This new structure effectively controls the cable's end length, making it highly maneuverable. The outer insulation layer eliminates insulation concerns, resulting in simple and easy operation.

[0033] A motor includes a stator connection structure and a casing, wherein a stator core 2 is installed in the casing.

[0034] The above are only embodiments of the present invention, and the circuits, electronic components and modules involved are all prior art, which can be fully implemented by those skilled in the art. It is needless to say that the content protected by this application does not involve improvements to software and methods. Common knowledge such as the specific structures and characteristics known in the scheme are not described in detail here. Ordinary technicians in the field are aware of all common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all prior art in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the field can improve and implement this scheme based on their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, several variations and improvements can be made, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A stator connection structure, characterized in that: The invention comprises a plurality of stator coils (1) and a stator core (2), wherein the stator coils (1) are wound on the stator core (2) and are sequentially distributed along the circumference of the stator core (2), each stator coil (1) has two lead-out wire ends (11), the ends of the plurality of stator coils (1) are directly tied and secured with a polyester tape (6), and the lead-out wire ends (11) are directly overlapped and welded to each other.

2. A stator connection structure according to claim 1, characterized in that: The lead-out wire ends (11) are overlapped and welded to each other and then firmly wrapped with a polyimide film (4).

3. The stator connection structure according to claim 1, characterized in that: The lead-out wire ends (11) are overlapped and welded to each other and then securely wrapped with a glass fiber (3) tape.

4. The stator connection structure according to claim 1, wherein: The stator core (2) is provided with a plurality of rectangular slots arranged in sequence along the circumferential direction for mounting the stator coils (1); The stator coil (1) corresponds to the rectangular slot one by one, and the rectangular slot is an open slot structure, which is convenient for inserting the formed coil.

5. A stator connection structure according to claim 4, characterized in that: The slot wedges of the notch of the rectangular slot adopt magnetic slot wedges (5), and the magnetic slot wedges (5) can reduce the influence of the slot on the air gap magnetic field.

6. The stator connection structure according to claim 1, characterized in that: A portion of the lead-out wire (11) and the cable (7) is left for welding connection.

7. A motor, characterized in that: It comprises the stator connection structure according to any one of claims 1 to 6, and also comprises a casing, wherein the stator core (2) is installed in the casing.

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