CN212751915U - Motor stator assembly and motor - Google Patents

Abstract

The application relates to the technical field of electromechanical device manufacturing, in particular to a motor stator assembly and a motor. The motor stator subassembly that this application embodiment provided includes stator core, stator winding and heat dissipation piece, and stator core sets up in the inside of frame, and stator winding is around locating stator core, and the heat dissipation piece sets up on stator core, and the heat dissipation piece contacts with stator winding to on being connected to the inner wall of frame. The motor that this application embodiment provided includes electric motor rotor and motor stator subassembly, and electric motor rotor sets up in stator core's inside. In the embodiment of the application, the stator winding can take the heat dissipation piece as a heat dissipation path, heat is directly dissipated to the base through the heat dissipation piece, the heat dissipation path with high thermal resistance is avoided, and therefore the heat dissipation efficiency of the stator winding is improved.

Description

Motor stator assembly and motor

Technical Field

The application relates to the technical field of electromechanical device manufacturing, in particular to a motor stator assembly and a motor.

Background

Along with the rapid development of engineering technology, the application of the motor is more and more extensive, simultaneously, the power density and the current density of the motor are also more and more high, a large amount of copper loss is generated by a stator winding in a stator assembly of the motor, for the motor which depends on the heat dissipation of the base, the copper loss needs to pass through a wire paint film, an air gap in a slot and the slot insulation and then is transmitted to the base through a stator iron core, the heat resistance in the process is large, and therefore the temperature rise of the stator winding is high, so that the working efficiency of the motor is influenced. Therefore, how to improve the heat dissipation efficiency of the stator winding in the stator assembly of the motor becomes a problem to be solved urgently in the technical field of manufacturing of electromechanical equipment.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the embodiments of the present application is to provide a stator assembly of an electric machine and an electric machine, so as to solve the above problems.

The motor stator assembly provided by the embodiment of the application comprises a stator core, a stator winding and a heat dissipation piece;

the stator core is arranged inside the base;

the stator winding is wound on the stator core;

the heat dissipation part is arranged on the stator iron core, is contacted with the stator winding and is connected to the inner wall of the machine base.

The motor stator subassembly that this application embodiment provided includes frame, stator core, stator winding and radiating piece, and stator core sets up in the inside of frame, and stator winding is around locating stator core, and the radiating piece sets up on stator core, and the radiating piece contacts with stator winding to on being connected to the inner wall of frame. Therefore, the stator winding can take the heat dissipation piece as a heat dissipation path, heat is directly dissipated to the base through the heat dissipation piece, the heat dissipation path with large thermal resistance is avoided, and therefore the heat dissipation efficiency of the stator winding is improved.

With reference to the first aspect, embodiments of the present application further provide a first optional implementation manner of the first aspect, where a stator assembly of an electric machine includes a plurality of heat dissipation members;

the stator core comprises a plurality of winding mounting teeth, and one stator slot is arranged between any two adjacent winding mounting teeth in the plurality of winding mounting teeth so as to form a plurality of stator slots in the stator core;

the stator winding is wound on the plurality of winding mounting teeth;

the plurality of radiating pieces are in one-to-one correspondence with the plurality of stator slots, and for each radiating piece in the plurality of radiating pieces, the radiating piece is arranged inside the corresponding stator slot, is in contact with a stator winding contained inside the stator slot, and is connected to the inner wall of the base.

In the above embodiment, motor stator module includes a plurality of heat dissipation pieces, stator core includes a plurality of winding installation teeth, and in a plurality of winding installation teeth, a stator slot has between two arbitrary adjacent winding installation teeth, so that form a plurality of stator slots in the stator core, stator winding is around locating on a plurality of winding installation teeth, a plurality of heat dissipation pieces and a plurality of stator slot one-to-one, to each heat dissipation piece in a plurality of heat dissipation pieces, the heat dissipation piece sets up inside the stator slot that corresponds, and the stator winding contact that holds with stator slot inside, and connect to on the inner wall of frame, thereby guarantee the radiating equilibrium of stator winding, and simultaneously, further improve stator winding's radiating efficiency.

With reference to the first alternative implementation manner of the first aspect, the present application also provides a second alternative implementation manner of the first aspect, and the heat dissipation member is in a sheet structure;

for each heat dissipation member in the plurality of heat dissipation members, the heat dissipation member is arranged inside the corresponding stator slot, and the heat dissipation member is attached to the stator winding contained inside the stator slot.

In the above embodiment, the heat dissipation member is a sheet structure, and for each of the plurality of heat dissipation members, the heat dissipation member is disposed inside the corresponding stator slot, and the heat dissipation member is attached to the stator winding accommodated inside the stator slot, thereby further improving the heat dissipation efficiency of the stator winding.

With reference to the first optional implementation manner of the first aspect, an embodiment of the present application further provides a third optional implementation manner of the first aspect, where the heat sink includes a first heat sink end portion, a second heat sink end portion, and a winding heat sink portion disposed between the first heat sink end portion and the second heat sink end portion, and the winding heat sink portion is in a hollow tubular structure;

aiming at each radiating piece in the plurality of radiating pieces, the radiating piece is arranged in the corresponding stator slot, the winding radiating part of the radiating piece covers the stator winding contained in the stator slot, and the first radiating end part and the second radiating end part of the radiating piece are respectively connected to the inner wall of the base.

In the above embodiment, the heat dissipation member includes a first heat dissipation end portion, a second heat dissipation end portion, and a winding heat dissipation portion disposed between the first heat dissipation end portion and the second heat dissipation end portion, the winding heat dissipation portion is in a hollow tubular structure, for each heat dissipation member of the plurality of heat dissipation members, the heat dissipation member is disposed inside the corresponding stator slot, and the winding heat dissipation portion of the heat dissipation member covers the stator winding contained inside the stator slot, the first heat dissipation end portion and the second heat dissipation end portion of the heat dissipation member are respectively connected to the inner wall of the base, so as to further improve the heat dissipation efficiency of the stator winding.

In combination with the first aspect, an embodiment of the present application further provides a fourth optional implementation manner of the first aspect, where the motor stator assembly further includes a heat conduction pad disposed on an inner wall of the base, and an end of the heat sink is connected to the inner wall of the base through the heat conduction pad.

In the above embodiment, the motor stator assembly further includes a heat conducting pad disposed on the inner wall of the base, and the end of the heat dissipating member is connected to the inner wall of the base through the heat conducting pad, so as to ensure good contact between the heat dissipating member and the inner wall of the base, thereby ensuring heat dissipation efficiency of the stator winding.

With reference to the fourth optional implementation manner of the first aspect, an example of the present application further provides a fifth optional implementation manner of the first aspect, and the thermal pad is a silicone pad.

With reference to the first aspect, an embodiment of the present application further provides a sixth optional implementation manner of the first aspect, where the stator assembly of the electric motor further includes a heat conducting structure, and the heat conducting structure wraps the heat sink and the stator winding.

In the above embodiment, the motor stator assembly further includes a heat conducting structure, the heat conducting structure covers the heat dissipation member and the stator winding, so that good contact between the heat dissipation member and the stator winding is ensured, and the heat dissipation efficiency of the stator winding is ensured.

With reference to the sixth alternative implementation manner of the first aspect, examples of the present application further provide a seventh alternative implementation manner of the first aspect, and the heat conducting structure is an epoxy resin structural body.

In combination with the first aspect, an embodiment of the present application further provides an eighth optional implementation manner of the first aspect, and the heat dissipation member is any one of an aluminum heat dissipation strip, a copper aluminum alloy heat dissipation strip, and a water-cooled heat dissipation tube.

In a second aspect, an embodiment of the present application further provides a motor, which includes a motor rotor and the motor stator assembly provided in the first aspect, or any optional implementation manner of the first aspect, where the motor rotor is disposed inside a stator core.

The motor provided by the embodiment of the present application has the same beneficial effects as the stator assembly of the motor provided by the first aspect or any optional implementation manner of the first aspect, and details are not repeated here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a stator assembly of an electric machine according to an embodiment of the present application.

Fig. 2 is a cross-sectional view of a stator assembly of the electric machine of fig. 1 provided in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a stator core according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a winding manner of a stator winding relative to a stator core according to an embodiment of the present application.

Fig. 5 is a schematic diagram illustrating an assembly relationship of a stator core, a stator winding, and a heat sink according to an embodiment of the present disclosure.

Fig. 6 is a cross-sectional view of another stator assembly of an electric machine provided in an embodiment of the present application.

Fig. 7 is a schematic view illustrating an assembly relationship of a stator core, a stator winding and a heat sink in the stator assembly of the motor shown in fig. 6.

Fig. 8 is a cross-sectional view of another stator assembly of an electric machine provided in an embodiment of the present application.

Fig. 9 is a schematic view illustrating an assembly relationship of a stator core, a stator winding and a heat sink in the stator assembly of the motor shown in fig. 8.

Fig. 10 is a cross-sectional view of another electric machine stator assembly provided in an embodiment of the present application.

Fig. 11 is a cross-sectional view of another stator assembly of an electric machine provided in an embodiment of the present application.

Fig. 12 is a cross-sectional view of an electric machine according to an embodiment of the present application.

Fig. 13 is a cross-sectional view of another motor provided in an embodiment of the present application.

Reference numerals: 10-a motor; 100-a motor stator assembly; 110-a stand; 120-a stator core; 121-winding mounting teeth; 122-stator slots; 130-stator windings; 140-a heat sink; 141-a first heat dissipating end; 142-a second heat dissipating end; 143-winding heat sink; 1431 — a first channel tube; 1432-second channel tube; 150-a thermally conductive pad; 200-motor rotor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Referring to fig. 1 and fig. 2, an embodiment of the present application provides a stator assembly 100 of an electric motor, which includes a stator core 120, a stator winding 130, and a heat sink 140 disposed inside a base 110.

The stator core 120 is disposed inside the base 110, the stator winding 130 is wound around the stator core 120, the heat sink 140 is disposed on the stator core 120, and the heat sink 140 contacts with the stator winding 130 and is connected to the inner wall of the base 110.

In this embodiment, the base 110 may be understood as a motor casing, and may be a heat dissipation structure itself, specifically may be an air-cooled casing heat dissipation structure, and may also be a water-cooled casing heat dissipation structure, and this embodiment of the present application does not specifically limit this, and the stator core 120 may be made of silicon steel material, and the heat dissipation member 140 may be any one of an aluminum heat dissipation strip, a copper aluminum alloy heat dissipation strip, and a water-cooled heat dissipation tube.

Through the arrangement, the stator winding 130 can take the heat dissipation member 140 as a heat dissipation path, and directly dissipate heat to the base 110 through the heat dissipation member 140, so that the heat dissipation path with high thermal resistance is avoided, and the heat dissipation efficiency of the stator winding 130 is improved.

Referring to fig. 3 and 4, in the embodiment of the present invention, the stator core 120 includes a plurality of winding mounting teeth 121, and one stator slot 122 is formed between any two adjacent winding mounting teeth 121 in the plurality of winding mounting teeth 121, so that a plurality of stator slots 122 are formed in the stator core 120, and the stator winding 130 is wound on the plurality of winding mounting teeth 121, based on which, in the embodiment of the present invention, the motor stator assembly 100 may include a plurality of heat dissipation members 140, and the plurality of heat dissipation members 140 correspond to the plurality of stator slots 122 one-to-one, and for each heat dissipation member 140 in the plurality of heat dissipation members 140, the heat dissipation member 140 is disposed inside the corresponding stator slot 122, and is in contact with the stator winding 130 accommodated inside the stator slot 122, and is connected to the inner wall of the base 110.

With the above arrangement, the heat sink 140 is disposed in each of the plurality of stator slots 122, and is in contact with the stator winding 130 accommodated in the stator slot 122 and connected to the inner wall of the housing 110, so that with the above arrangement, the heat dissipation balance of the stator winding 130 is ensured, and at the same time, the heat dissipation efficiency of the stator winding 130 is further improved.

Referring to fig. 2 and 5, in the heat dissipation member 140, as a first alternative implementation, it may have a sheet structure. Based on this, for each heat sink 140 of the plurality of heat sinks 140, the heat sink 140 is disposed inside the corresponding stator slot 122, and the heat sink 140 is attached to the stator winding 130 received inside the stator slot 122.

Taking the stator winding 130 as an example of a concentrated winding, the stator winding 130 includes a plurality of sub-windings, the plurality of sub-windings correspond to the plurality of winding mounting teeth 121 one to one, and each of the plurality of sub-windings is wound on the corresponding winding mounting tooth 121, so it can be understood that in the embodiment of the present application, two sub-windings are accommodated in each stator slot 122. Based on this, in the embodiment of the present invention, for each heat dissipation element 140 in the plurality of heat dissipation elements 140, the heat dissipation element 140 is disposed inside the corresponding stator slot 122, located between the two sub-windings accommodated inside the stator slot 122, and respectively attached to the two sub-windings, and two ends of the heat dissipation element 140 are respectively connected to the inner wall of the base 110, so that, in the embodiment of the present invention, the heat dissipation element 140 may have a "U" shape or a "U" shape, which is not limited in the embodiment of the present invention.

Referring to fig. 6, 7, 8 and 9, in the heat dissipation member 140, as a second optional implementation manner, in the embodiment of the present application, it may also include a first heat dissipation end 141, a second heat dissipation end 142, and a winding heat dissipation portion 143 disposed between the first heat dissipation end 141 and the second heat dissipation end 142, where the winding heat dissipation portion 143 is a hollow tubular structure. Based on this, for each of the plurality of heat dissipation members 140, the heat dissipation member 140 is disposed inside the corresponding stator slot 122, the winding heat dissipation portion 143 of the heat dissipation member 140 encloses the stator winding 130 received inside the stator slot 122, and the first heat dissipation end portion 141 and the second heat dissipation end portion 142 of the heat dissipation member 140 are respectively connected to the inner wall of the base 110.

Also, taking the stator winding 130 as a concentrated winding as an example, the stator winding 130 includes a plurality of sub-windings, the plurality of sub-windings correspond to the plurality of winding mounting teeth 121 one to one, and each of the plurality of sub-windings is wound on the corresponding winding mounting tooth 121, so it can be understood that in the present embodiment, two sub-windings are accommodated in each stator slot 122. Based on this, in the embodiment of the present application, the winding heat dissipation part 143 may be a single-channel tube, such that, for each heat dissipation part 140 of the plurality of heat dissipation parts 140, the heat dissipation part 140 is disposed inside the corresponding stator slot 122, the winding heat dissipation part 143 of the heat dissipation part 140 encloses the two sub-windings accommodated inside the stator slot 122, and the first heat dissipation end part 141 and the second heat dissipation end part 142 of the heat dissipation part 140 are respectively connected to the inner wall of the base 110, as shown in fig. 6 and 7. Of course, in the embodiment of the present application, the winding heat dissipation portion 143 may also be a dual-channel pipe, and for convenience of description, the winding heat dissipation portion 143 may be respectively defined as a first channel pipe 1431 and a second channel pipe 1432, so that, for each heat dissipation member 140 in the plurality of heat dissipation members 140, the heat dissipation member 140 is disposed inside the corresponding stator slot 122, the first channel pipe 1431 included in the winding heat dissipation portion 143 of the heat dissipation member 140 encloses one sub-winding received inside the stator slot 122, meanwhile, the second channel pipe 1432 included in the winding heat dissipation portion 143 of the heat dissipation member 140 encloses another sub-winding received inside the stator slot 122, and the first heat dissipation end portion 141 and the second heat dissipation end portion 142 of the heat dissipation member 140 are respectively connected to the inner wall of the base 110, as shown in fig. 8 and 9.

Further, in order to ensure good contact between the heat dissipation member 140 and the inner wall of the base, in the embodiment of the present application, the motor stator assembly 100 may further include a heat conduction pad 150, the heat conduction pad 150 is disposed on the inner wall of the base 110, the end of the heat dissipation member 140 is connected to the inner wall of the base 110 through the heat conduction pad 150, and in practical implementation, the heat conduction pad 150 may be a silica gel pad.

Referring to fig. 10, taking the heat dissipation member 140 as an example of a sheet structure, for each heat dissipation member 140 of the plurality of heat dissipation members 140, the middle portion of the heat dissipation member 140 is disposed inside the corresponding stator slot 122, and one end of the heat dissipation member 140 is connected to the inner wall of the base 110 through one heat conduction pad 150, and the other end is connected to the inner wall of the base 110 through another heat conduction pad 150.

Referring to fig. 11, taking the heat dissipating member 140 includes a first heat dissipating end 141, a second heat dissipating end 142, and a winding heat dissipating portion 143 disposed between the first heat dissipating end 141 and the second heat dissipating end 142, for example, the winding heat dissipating portion 143 is a hollow tubular structure, for each heat dissipating member 140 of the plurality of heat dissipating members 140, the winding heat dissipating portion 143 of the heat dissipating member 140 is disposed inside the corresponding stator slot 122, the first heat dissipating end 141 of the heat dissipating member 140 is connected to the inner wall of the base 110 through a heat conducting pad 150, and the second heat dissipating end 142 is connected to the inner wall of the base 110 through another heat conducting pad 150.

In order to ensure good contact between the heat sink 140 and the stator winding 130, in the embodiment of the present application, the motor stator assembly 100 further includes a heat conducting structure (not shown in the figure), the heat conducting structure encloses the heat sink 140 and the stator winding 130, and in practical implementation, the heat conducting structure is an epoxy resin structural body.

It should be noted that, with respect to the motor stator assembly 100 provided in the embodiment of the present application, during the production and manufacturing process, epoxy resin may be filled into the stator core 120, so that the epoxy resin covers the heat sink 140 and the stator winding 130, and waits for the solidification to form a heat conducting structure.

Referring to fig. 12 and 13, an electric machine 10 is further provided in the embodiment of the present application, including an electric machine rotor 200 and the electric machine stator assembly 100, where the electric machine rotor 200 is disposed inside the stator core 120.

To sum up, motor stator subassembly 100 that this application embodiment provided includes frame 110, stator core 120, stator winding 130 and heat dissipation member 140, and stator core 120 sets up in the inside of frame 110, and stator winding 130 is around locating on stator core 120, and heat dissipation member 140 sets up on stator core 120, and heat dissipation member 140 and stator winding 130 contact are connected to on the inner wall of frame 110. Therefore, the stator winding 130 can use the heat sink 140 as a heat dissipation path to directly dissipate heat to the base 110 through the heat sink 140, thereby avoiding a heat dissipation path with large thermal resistance and improving the heat dissipation efficiency of the stator winding 130.

Further, the motor 10 provided in the embodiment of the present application has the same beneficial effects as the motor stator assembly 100 provided in the embodiment of the present application, and details are not described herein.

In the description of the present application, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," and "installed" should be interpreted broadly, and may be, for example, mechanically fixed, detachably connected, or integrally connected, electrically connected, and communicatively connected, where the communicative connection may be a wired communicative connection or a wireless communicative connection, and may be directly connected, indirectly connected through an intermediate medium, or communicated between two elements, and the specific meaning of the above terms in the present application may be understood by those skilled in the art according to specific situations.

In the description of the present application, it should be noted that the terms "upper" and "lower" are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The above description is only a few examples of the present application and is not intended to limit the present application, and those skilled in the art will appreciate that various modifications and variations can be made in the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A motor stator component is characterized by comprising a stator core, a stator winding and a heat dissipation piece;

the stator core is arranged inside the base;

the stator winding is wound on the stator core;

the heat dissipation piece is arranged on the stator core, is in contact with the stator winding and is connected to the inner wall of the base.

2. The electric machine stator assembly of claim 1, comprising a plurality of heat sinks;

the stator core comprises a plurality of winding mounting teeth, and one stator slot is arranged between any two adjacent winding mounting teeth in the plurality of winding mounting teeth, so that a plurality of stator slots are formed in the stator core;

the stator winding is wound on the plurality of winding mounting teeth;

the plurality of radiating pieces are in one-to-one correspondence with the plurality of stator slots, and for each radiating piece in the plurality of radiating pieces, the radiating piece is arranged in the corresponding stator slot, is in contact with a stator winding contained in the stator slot and is connected to the inner wall of the base.

3. The electric machine stator assembly of claim 2, wherein the heat sink is a sheet-like structure;

aiming at each radiating piece in the plurality of radiating pieces, the radiating piece is arranged in the corresponding stator slot, and the radiating piece is attached to a stator winding contained in the stator slot.

4. The electric machine stator assembly of claim 2, wherein the heat sink member comprises a first heat sink end, a second heat sink end, and a winding heat sink portion disposed between the first heat sink end and the second heat sink end, the winding heat sink portion being of a hollow tubular structure;

aiming at each radiating piece in the plurality of radiating pieces, the radiating piece is arranged in the corresponding stator slot, the winding radiating part of the radiating piece covers the stator winding contained in the stator slot, and the first radiating end part and the second radiating end part of the radiating piece are respectively connected to the inner wall of the machine base.

5. The electric motor stator assembly of claim 1, further comprising a thermal pad disposed on an inner wall of the housing, wherein an end of the heat sink is coupled to the inner wall of the housing through the thermal pad.

6. The electric machine stator assembly of claim 5, wherein the thermal pad is a silicone pad.

7. The electric machine stator assembly of claim 1, further comprising a thermally conductive structure encasing the heat sink and the stator windings.

8. The electric machine stator assembly of claim 7, wherein the thermally conductive structure is an epoxy structure.

9. The electric motor stator assembly of claim 1, wherein said heat sink is any one of an aluminum heat sink bar, a copper aluminum alloy heat sink bar, and a water-cooled heat sink.

10. An electric machine comprising an electric machine rotor and an electric machine stator assembly according to any one of claims 1 to 9, said electric machine rotor being disposed inside said stator core.

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