CN108448778A - Stator assembly of motor, winding method of stator assembly, motor, fan and air conditioning system - Google Patents

Abstract

The invention provides a stator assembly of a motor and its winding method, a motor, a blower fan and an air-conditioning system, wherein the stator assembly includes an iron core, at least three winding coils and at least four terminals. A plurality of winding coils are arranged on the iron core in a preset order, and each winding coil has a first end and a second end; the terminals are arranged on part of the iron core, and the terminals include a first phase terminal and a second phase connection terminal, the third phase terminal and the common terminal, the first ends of the three winding coils are respectively wound on the first phase terminal, the second phase terminal and the third phase terminal, the second ends of the three winding coils They are all wound on the common terminal, and the winding direction of one group of coils on the common terminal of the three winding coils is different from the winding direction of the other two groups of coils on the common terminal. The technical scheme of the present invention effectively solves the problem in the prior art that the virtual welding between the winding coil and the common terminal leads to easy crash and shutdown.

Description

Stator assembly of electric motor and winding method thereof, electric motor, fan and air conditioning system

technical field

The invention relates to the field of air conditioning, in particular to a stator assembly of a motor and a winding method thereof, a motor, a fan, and an air conditioning system.

Background technique

The stator of the motor is formed by wrapping windings formed by multiple enameled wires on the iron core, and the two ends of the enameled wires are respectively welded and fixed. For a three-phase motor, one end of the enameled wire of each phase coil can be welded on a common end, but after the current three-phase motor is wound and welded, the phenomenon of virtual welding between the enameled wire and the terminal of the common end is prone to occur. Because the enameled wire is wrapped with solder, the phenomenon of virtual soldering cannot be judged from the appearance, so the motor with the problem of soldering is easy to flow to the user, and the problem of crash and shutdown occurs during the user's use, which affects the image of the brand in the hearts of consumers. If the welding time is prolonged in order to avoid false welding, the high temperature of the tin furnace will burn the enameled wire, resulting in abnormal quality of the stator turns.

Contents of the invention

The present invention aims to provide a motor stator assembly and its winding method, a motor, a fan and an air-conditioning system, so as to solve the problem in the prior art that the winding coil and the common terminal are easily crashed or shut down due to false welding between the winding coil and the common terminal.

In order to achieve the above object, according to one aspect of the present invention, a stator assembly of a motor is provided, including: an iron core; a plurality of winding coils, and the plurality of winding coils include: a first phase coil, a second phase coil and a third phase coil The coils, the first phase coil, the second phase coil and the third phase coil all have a first end and a second end, and the first phase coil, the second phase coil and the third phase coil are arranged on the iron core in a preset order; A plurality of connection terminals are arranged on part of the iron core, and the plurality of connection terminals include a first phase connection terminal, a second phase connection terminal, a third phase connection terminal and a common connection terminal, and the first end of the first phase coil is wound on the second phase On the terminal of one phase, the first end of the coil of the second phase is wound on the terminal of the second phase, the first end of the coil of the third phase is wound on the terminal of the third phase, the coil of the first phase, the coil of the second phase and The second ends of the third-phase coils are all wound on the common terminal, and the winding direction of one group of coils among the first-phase coil, second-phase coil and third-phase coil on the common terminal is the same as that of the other two groups of coils on the common terminal. The winding direction on the end is different.

Further, the common terminal includes a plurality of terminal posts.

Further, a plurality of binding posts are arranged at intervals.

Further, the interval between two adjacent terminal posts is between 1mm and 2mm.

Further, a plurality of terminal posts are arranged in parallel.

Further, the winding direction of the first phase coil and the second phase coil is opposite to the winding direction of the third phase coil, and the third phase coil is arranged between the first phase coil and the second phase coil.

Further, the iron core includes a plurality of core legs, and the winding coils are arranged on the core legs in a one-to-one correspondence.

According to another aspect of the present invention, a motor is provided, including a stator assembly, which is the above stator assembly.

According to another aspect of the present invention, a fan is provided, including a motor, and the motor is the above motor.

According to another aspect of the present invention, an air conditioning system is provided, including a motor, and the motor is the above motor.

According to another aspect of the present invention, a winding method of a stator assembly is provided, comprising the following steps: the stator assembly includes a first phase coil, a second phase coil and a third phase coil, and the first end of the first phase coil is Fix the first phase terminal on the iron core, fix the first end of the second phase coil on the second phase terminal on the iron core, fix the first end of the third phase coil on the iron core On the third phase terminal: wind the first phase coil, the second phase coil and the third phase coil on the corresponding iron cores in the preset order; the first phase coil, the second phase coil and the third phase coil The second ends of the coils are all wound on the common terminal on the iron core, and the winding direction of the third phase coil on the common terminal is different from that of the first phase coil and the second phase coil on the common terminal.

Further, the first phase coil is wound on the common terminal along the preset direction first, then the third phase coil is wound on the common terminal along the direction opposite to the preset direction, and finally the second phase coil is wound along the preset direction. Let the same direction be wound on the common terminal.

Applying the technical solution of the present invention, the first ends of the first phase coil, the second phase coil and the third phase coil are correspondingly connected to the first phase terminal, the second phase terminal and the third phase terminal, and the first The second ends of the phase coil, the second phase coil and the third phase coil are all connected to the common terminal, and a set of coils in the first phase coil, the second phase coil and the third phase coil are wound on the common terminal The direction is different from the winding direction of the other two groups of coils on the common terminal, so that a gap is formed between the first phase coil, the second phase coil and the third phase coil or between multiple coils and the common terminal, which is conducive to soldering on the common terminal. After being liquefied by heating, it infiltrates, so that the liquefied solder is fully in contact with the coil, and then the coil and the common terminal are fully welded to reduce the occurrence of false soldering.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Figure 1 shows a schematic structural view of an embodiment of a stator assembly according to the present invention; and

FIG. 2 shows a partially enlarged schematic view of A of the stator assembly of FIG. 1 .

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10. Iron core; 20. Winding coil; 30. Terminal; 31. First phase terminal; 32. Second phase terminal; 33. Third phase terminal; 34. Public terminal.

Detailed ways

The technical solution of the present invention is mainly applied to the stator of the motor. The end of the winding coil needs to be welded on the terminal of the stator. During welding, the terminal and the part of the winding coil to be welded need to be heated so that the part to be welded is easy to catch and melt. Solder, and can be fully and firmly welded. The inventors of the present invention found that the winding directions of the parts to be welded of the multiple winding coils on the common terminal of the current stator on the terminal are the same, and it is easy to form a close winding, so that the solder cannot penetrate between the winding coil and the terminal Or the amount of infiltration is insufficient, which leads to false welding. If the heating time can be extended to avoid this kind of virtual welding, but the heat will be transferred along the terminal or the part to be welded, resulting in damage to the stator wire package, resulting in abnormal quality of the stator turns. The present application improves the structure of the stator aiming at the above problems.

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only, and not as limiting. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

As shown in FIG. 1 , the stator assembly of the motor of this embodiment includes an iron core 10 , a plurality of winding coils 20 and a plurality of terminals 30 . Wherein, the multiple winding coils 20 include a first phase coil, a second phase coil and a third phase coil, and the first phase coil, the second phase coil and the third phase coil all have a first end and a second end, and the first phase The coil, the second phase coil and the third phase coil are arranged on the iron core 10 in a preset order. A plurality of terminals 30 are arranged on part of the iron core 10, and the plurality of terminals 30 include a first phase terminal 31, a second phase terminal 32, a third phase terminal 33 and a common terminal 34, the first phase coil The first end is wound on the first phase terminal 31, the first end of the second phase coil is wound on the second phase terminal 32, the first end of the third phase coil is wound on the third phase terminal 33, and the second phase coil is wound on the third phase terminal 33. The second ends of the first phase coil, the second phase coil and the third phase coil are all wound on the common terminal 34, and one group of coils in the first phase coil, the second phase coil and the third phase coil are on the common terminal 34 The winding direction of the coil is different from the winding direction of the other two groups of coils on the common terminal 34.

Applying the technical solution of this embodiment, the first ends of the first phase coil, the second phase coil and the third phase coil are correspondingly connected to the first phase terminal 31, the second phase terminal 32, and the third phase terminal 33 Above, the second ends of the first phase coil, the second phase coil and the third phase coil are all connected on the common terminal 34, and a group of coils in the first phase coil, the second phase coil and the third phase coil are connected to the common The winding direction on the terminal 34 is different from that of the other two groups of coils on the common terminal 34, so that the first phase coil, the second phase coil and the third phase coil or between multiple coils and the common terminal 34 A gap is formed between them, which is conducive to the infiltration of solder after heating and liquefaction, so that the liquefied solder can fully contact the coil, and then the coil and the common terminal 34 can be fully welded to reduce the occurrence of false soldering.

At the same time, since the solder can fully contact the common terminal 34, the stator assembly of this embodiment does not need to prolong the heating time in order to completely penetrate the enameled wire when winding, which will not cause burns on the stator wire package, and will not cause stator damage. Turn-to-turn quality abnormalities.

In the stator assembly of this embodiment, the first-phase coil, the second-phase coil and the third-phase coil correspond to the three phases U, V, and W, respectively, wherein the U-phase coil (that is, the first-phase coil) and the V-phase coil ( That is, the second phase coil) is wound clockwise for a section along the terminal of the common terminal 34, and the W-phase coil (ie, the third phase coil) is wound counterclockwise on the same section of the terminal 34 of the common terminal, and the third coil of the three coils The winding direction of the two ends on the terminal is not exactly the same, and the reverse winding is used to realize the misplaced winding, so that the second end of the coil overlaps the terminal and forms a gap, which is conducive to the infiltration of liquefied solder.

Preferably, in this embodiment, the W-phase coil (ie, the third-phase coil) is arranged between the U-phase coil (ie, the first-phase coil) and the V-phase coil (ie, the second-phase coil), so that the U-phase coil and Adjacent W-phase coils have opposite directions, and W-phase coils and adjacent V-phase coils have opposite directions. The overlapping of the three coils can easily form the above-mentioned gap, which is more conducive to the welding between the coils and the terminals, and between the coils.

As shown in FIG. 2 , the common terminal 34 of this embodiment includes two terminals: a first terminal 34 a and a second terminal 34 b. Preferably, the two terminal posts in this embodiment are arranged in parallel and spaced apart. There are gaps between the terminals arranged at intervals, which strengthens the effect of the above-mentioned gaps. The parallel arrangement of the terminals is conducive to the uniform arrangement of the coils when they are wound on the terminals, and is more conducive to the welding between the coils and the terminals.

According to needs, in other embodiments, the number of terminal posts may also be three, four or more. Further preferably, the interval between two adjacent terminal posts in this embodiment is between 1mm and 2mm. When the interval is too large, the solder droplets are easy to be spaced directly, which is not conducive to welding, and it is easy to cause damage or waste to other structures on the stator assembly. When the interval is between 1mm and 2mm, the solder droplets are easy to hang on the first terminal of the terminal and the coil. on both ends and attach along the terminal post and the second end of the coil.

As shown in FIG. 1 , the iron core 10 of this embodiment includes a plurality of core legs for winding coils, and the winding coils 20 are wound on the core legs in a one-to-one correspondence. In other embodiments, a plurality of slots can be provided on the iron core, and a part of the iron core between two adjacent slots forms a fixed column, and a single fixed column can be used as a core column and the coil can be wound, or the corresponding The two fixed columns arranged adjacently or at intervals are used as a core column to wind the coil.

The present invention also provides an embodiment of a motor. The motor of this embodiment includes a rotor assembly and a stator assembly, wherein the stator assembly is a stator assembly including the above technical features. The motor in this embodiment has the advantages of reliable welding and stable operation.

The motor using the above-mentioned stator assembly can be used in a mechanism that requires rotation, such as a fan or an air-conditioning system. The fan or air-conditioning system using the motor of the above-mentioned embodiment has the advantages of reliable welding and stable operation.

The present invention also provides a winding method of a stator assembly, comprising the following steps:

1. The stator assembly includes a first phase coil, a second phase coil and a third phase coil, the first end of the first phase coil is fixed on the first phase terminal 31 on the iron core 10, and the second phase coil is The first end is fixed on the second phase terminal 32 on the iron core 10 , and the first end of the third phase coil is fixed on the third phase terminal 33 on the iron core 10 .

2. Winding the first-phase coil, the second-phase coil and the third-phase coil on the corresponding iron core 10 respectively in a preset order.

3. Wind the second ends of the first phase coil, the second phase coil and the third phase coil on the common terminal 34 on the iron core 10, and the winding direction of the third phase coil on the common terminal 34 is the same as that of the first phase coil. The winding directions of the first-phase coil and the second-phase coil on the common terminal 34 are different.

When the second ends of the first phase coil, the second phase coil and the third phase coil are all wound on the common terminal 34 on the iron core 10, the first phase coil is wound around the common terminal 34 at intervals along the preset direction. On the terminal 34, the third phase coil is wound on the common terminal 34 at intervals in the direction opposite to the preset direction, and finally the second phase coil is wound on the common terminal 34 at intervals in the same direction as the preset direction 34 on. For example, when winding the stator assembly of this embodiment, the U-phase coil is wound clockwise on the common terminal, and then the W-phase coil is wound counterclockwise on the common terminal, so that the U-phase coil and the W-phase coil are reversed. Wind to form a mesh, and form a gap between the U-phase coil, W-phase coil and the common terminal, and finally wind the V-phase coil clockwise outside the W-phase coil.

In other embodiments, the winding direction of the U-phase coil can also be opposite to that of the other two coils, or the winding direction of the V-phase coil can be opposite to that of the remaining two coils, and the winding direction can also be adapted. ground to create gaps between coils, and between coils and terminals.

When the solder is heated and liquefied and attached to the coil, it can penetrate into the gap between the coil and the terminal, so that the coil and the terminal are fully welded, reducing the occurrence of false soldering. In this way, the stator wire package will not be scalded by heating the terminals or coils for a long time, and it will not cause quality abnormalities such as stator turns.

When the stator assembly production line uses the winding method of this embodiment to produce the stator assembly, it can effectively ensure the welding quality between the coil and the terminal, thereby effectively improving the quality of the product and reducing the flow of products with virtual welding problems to consumers The probability.

From the above description, it can be seen that the above-mentioned embodiments of the present invention have achieved the following technical effects:

The first ends of the first phase coil, the second phase coil and the third phase coil are correspondingly connected to the first phase terminal, the second phase terminal and the third phase terminal, the first phase coil, the second phase coil and the second ends of the third-phase coils are connected to the common terminal, and the winding direction of one group of coils among the first-phase coil, second-phase coil and third-phase coil on the common terminal is the same as that of the other two groups of coils. The winding direction on the common terminal is different, so that a gap is formed between the first phase coil, the second phase coil and the third phase coil or between multiple coils and the common terminal, which is conducive to the infiltration of solder after heating and liquefaction, so that The liquefied solder is fully in contact with the coil, so that the coil and the common terminal are fully welded, reducing the occurrence of false soldering.

In the description of the present application, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate the orientation Or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply the device or element referred to It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the protection scope of the present application; the orientation words "inner and outer" refer to the inner and outer relative to the outline of each component itself.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations". Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. To limit the protection scope of this application.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (12)

1. A stator assembly of a motor, characterized in that, comprising: iron core (10); A plurality of winding coils (20), the plurality of winding coils (20) comprising: a first phase coil, a second phase coil and a third phase coil, the first phase coil, the second phase coil and the third phase coil all have The first end and the second end, the first phase coil, the second phase coil and the third phase coil are arranged on the iron core (10) in a preset order; A plurality of terminals (30), which are arranged on part of the iron core (10), and the plurality of terminals (30) include a first phase terminal (31), a second phase terminal (32), a third A phase terminal (33) and a common terminal (34), the first end of the first phase coil is wound on the first phase terminal (31), and the first end of the second phase coil is wound on On the second phase terminal (32), the first end of the third phase coil is wound on the third phase terminal (33), the first phase coil, the second phase coil and The second ends of the third phase coils are all wound on the common terminals (34), and one group of the first phase coils, the second phase coils and the third phase coils are in the The winding direction on the common terminal (34) is different from the winding directions of the other two groups of coils on the common terminal (34). 2. The stator assembly according to claim 1, characterized in that said common terminal (34) comprises a plurality of terminal posts. 3. The stator assembly according to claim 2, wherein a plurality of said terminal posts are arranged at intervals. 4. The stator assembly according to claim 3, wherein the interval between two adjacent terminals is between 1mm and 2mm. 5. The stator assembly according to claim 2, wherein a plurality of said terminal posts are arranged in parallel. 6. The stator assembly according to claim 1, wherein the winding direction of the first phase coil and the second phase coil is opposite to the winding direction of the third phase coil, and the third phase coil It is arranged between the first phase coil and the second phase coil. 7. The stator assembly according to claim 1, characterized in that, the iron core (10) comprises a plurality of core legs, and the winding coils (20) are arranged on the core legs in a one-to-one correspondence. 8. A motor, comprising a stator assembly, wherein the stator assembly is the stator assembly according to any one of claims 1-7. 9. A fan, comprising a motor, characterized in that the motor is the motor according to claim 8. 10. An air conditioning system comprising a motor, characterized in that the motor is the motor according to claim 8. 11. A winding method for a stator assembly, comprising the following steps: The stator assembly includes a first phase coil, a second phase coil and a third phase coil, the first end of the first phase coil is fixed on the first phase terminal (31) on the iron core (10), and the second phase The first end of the coil is fixed on the second phase terminal (32) on the iron core (10), and the first end of the third phase coil is fixed on the third phase terminal (33) on the iron core (10) superior: respectively winding the first phase coil, the second phase coil and the third phase coil on the corresponding iron cores (10) in a preset order; The second ends of the first phase coil, the second phase coil and the third phase coil are all wound on the common terminal (34) on the iron core (10), and the third phase coil is wound on the common terminal (34) The winding direction is different from the winding direction of the first phase coil and the second phase coil on the common terminal (34). 12. The winding method according to claim 11, characterized in that first, the first phase coil is wound on the common terminal (34) along a preset direction, and then the third phase coil is wound along the preset direction The opposite direction is wound on the common terminal (34), and finally the second phase coil is wound on the common terminal (34) in the same direction as the preset direction.