CN217063435U - Stator module and motor - Google Patents

Abstract

The utility model relates to a stator module and motor, stator module includes stator core, stator winding and busbar subassembly, stator winding runs through the setting on stator core, the busbar subassembly includes the star point copper bar, looks copper bar and insulating connecting piece, star point copper bar and looks copper bar interval set up on insulating connecting piece, and all with stator winding welded fastening, and the one end of insulating connecting piece and stator core's one end looks butt, one side of insulating connecting piece and stator winding's radial outside looks butt. Because the star point copper bar of this application and looks copper bar pass through insulating connecting piece fixed for the busbar subassembly, and the busbar subassembly is formed with spacingly with stator core's one end and stator winding's radial outside looks butt simultaneously, consequently the stability of star point copper bar and looks copper bar can promote, and then when the motor operation, the star point copper bar all is difficult for producing the vibration with the looks copper bar, the risk of its solder joint fracture has been reduced, the holistic NVH performance of motor has been promoted simultaneously.

Description

Stator module and motor

Technical Field

The application relates to the technical field of electromagnetic induction devices, in particular to a stator assembly and a motor.

Background

The motor is a device for realizing electric energy conversion or transmission according to an electromagnetic induction law, and generally comprises a stator assembly, wherein the stator assembly generally comprises a stator core and a stator winding arranged on the stator core, and two ends of the stator winding extend out of the stator core.

For a three-phase motor, in order to meet the requirement of circuit design, a stator winding of the three-phase motor is generally provided with a star point copper bar so as to realize the mutual communication between the three-phase windings; meanwhile, in order to input or output the current of the three-phase motor, a phase copper bar is usually arranged on the stator winding. The star point copper bars and the phase copper bars are welded and fixed with the stator winding and form welding spots, and the star point copper bars and the phase copper bars are usually arranged on the radial outer side of the stator winding.

In prior art, because the star point copper bar and the looks copper bar are fixed insecure with stator winding, when the motor operation, it produces the vibration on stator winding easily, and then causes the holistic NVH's of motor performance not good to there is the risk of fracture in its solder joint also.

SUMMERY OF THE UTILITY MODEL

Based on this, provide a stator module and motor to improve prior art star point copper bar and looks copper bar and the not firm problem of stator winding.

On the one hand, this application provides a stator module, stator module includes stator core, stator winding and busbar subassembly, stator winding runs through the setting and is in on the stator core, and the both ends of stator winding all stretch out outside the stator core, the busbar subassembly includes star point copper bar, looks copper bar and insulating connecting piece, the star point copper bar with looks copper bar interval sets up on the insulating connecting piece, and all with stator winding welded fastening, and the one end of insulating connecting piece with stator core's one end looks butt, one side of insulating connecting piece with stator winding's radial outside butt.

In one embodiment, an end face of one end of the insulating connecting piece, which is abutted against the stator core, is a plane, and/or the insulating connecting piece is arc-shaped, and the diameter of the inner side of the insulating connecting piece in the radial direction is equal to the diameter of the outer side of the stator winding in the radial direction.

In one embodiment, the diameter of the radial outer side of the insulating connector is smaller than or equal to the diameter of the radial outer side of the stator core; and/or the axial length of the insulating connecting piece is less than or equal to the distance that the end part of the stator winding extends out of the stator core.

In one embodiment, the star point copper bars and/or the phase copper bars are welded and fixed with the radial outer side of the stator winding.

In one embodiment, the stator winding includes a plurality of sets of conductor segments, extension terminals are disposed on the star point copper bar and the phase copper bar, and one end of each extension terminal, which is far away from the star point copper bar or the phase copper bar, is welded to the conductor segments.

In one embodiment, the stator assembly further comprises a thermistor, the thermistor is electrically connected with the star point copper bar through a first lead, and one end of the first lead, which is electrically connected with the star point copper bar, is arranged in the insulating connecting piece.

In one embodiment, the thermistor is electrically connected to the phase copper bar through a second conducting wire, and one end of the second conducting wire electrically connected to the phase copper bar is disposed in the insulating connecting member.

In one embodiment, a buckle is arranged on the insulating connecting piece, a clamping groove is arranged on the buckle, and the first conducting wire and/or the second conducting wire are/is clamped and fixed in the clamping groove.

In one embodiment, the stator assembly further includes a phase lead-out wire for inputting or outputting current, the phase lead-out wire includes a welding terminal, a lead-out wire terminal and a connecting wire, the welding terminal is welded and fixed to the phase copper bar, the lead-out wire terminal and the welding terminal are spaced, one end of the connecting wire is electrically connected to the welding terminal, and the other end of the connecting wire is electrically connected to the lead-out wire terminal.

In another aspect, the present application provides an electric machine including the stator assembly.

Because the star point copper bar of this application and looks copper bar pass through insulating connecting piece fixed for the busbar subassembly, and the busbar subassembly is formed with spacingly with stator core's one end and stator winding's radial outside looks butt simultaneously, consequently the stability when star point copper bar and looks copper bar and stator winding welded fastening can promote, and then when the motor operation, the star point copper bar all is difficult for producing the vibration with looks copper bar, the risk of its solder joint fracture has been reduced, the holistic NVH performance of motor has been promoted simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a stator assembly according to an embodiment of the present disclosure;

fig. 2 is an exploded view of a buss bar assembly of a stator assembly provided in an embodiment of the present application;

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

FIG. 4 is an enlarged view of portion A of FIG. 1;

fig. 5 is a cross-sectional view of a stator assembly at a buss bar assembly provided by an embodiment of the present application.

Reference numerals: 1. a stator core; 11. a conductor slot; 2. a stator winding; 21. a conductor section; 3. a bus bar assembly; 31. an extension terminal; 4. a star point copper bar; 5. a copper bar; 51. welding the end part; 6. an insulating connector; 61. an insulating base; 62. buckling; 621. a card slot; 7. a thermistor; 71. a first conductive line; 72. a second conductive line; 8. leading out wires; 81. welding a terminal; 82. lead-out wire terminals; 83. and connecting the lead.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It should be noted that the illustration provided in the present embodiment is only to illustrate the basic idea of the present invention in a schematic way.

The structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, and any structural modification, proportion relation change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention.

References in this specification to orientations or positional relationships such as "upper," "lower," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," "circumferential," and the like are based on the orientations or positional relationships illustrated in the drawings and are intended to simplify the description, rather than to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and fig. 2, the present application provides a stator module, stator module can include stator core 1, stator winding 2 and busbar subassembly 3, stator winding 2 can run through the setting on stator core 1, and stator winding 2's both ends can all stretch out outside stator core 1, busbar subassembly 3 can include star point copper bar 4, looks copper bar 5 and insulating connecting piece 6, star point copper bar 4 and looks copper bar 5 can set up on insulating connecting piece 6 at the interval, and can all with stator winding 2 welded fastening, and the one end of insulating connecting piece 6 can be with the one end looks butt of stator core 1, one side of insulating connecting piece 6 can be with the radial outside butt of stator winding 2.

As shown in fig. 3, in the embodiment of the present application, it is exemplarily illustrated that the stator core 1 may be provided in a cylindrical shape, a plurality of conductor slots 11 may be provided on a radial inner side thereof, and the plurality of conductor slots 11 may be equally spaced along a circumferential direction of the stator core 1. The stator winding 2 may also be provided in a cylindrical shape, and the middle portion thereof may be provided in the conductor slots 11, and both ends thereof may extend outside the conductor slots 11.

As shown in fig. 1 and 2, more specifically, the bus bar assembly 3 may be disposed at the same end of the stator core 1 and the stator winding 2, wherein the star point copper bar 4 is welded and fixed with the stator winding 2 to achieve mutual communication between the three-phase circuits. The phase copper bar 5 is welded and fixed with the stator winding 2 so as to input or output current. The insulation connecting piece 6 is fixedly connected with the star point copper bars 4 and the phase copper bars 5 which are arranged at intervals to form the busbar assembly 3. The insulating connecting piece 6 can be formed by injection molding of an insulating material (such as plastic), and the star point copper bar 4 and the phase copper bar 5 can be integrated with the insulating connecting piece 6 by injection molding in advance and then are respectively welded and fixed with the stator winding 2.

Because star point copper bar 4 of this application and looks copper bar 5 are fixed to busbar subassembly 3 through insulating connecting piece 6, and busbar subassembly 3 is formed with spacingly with the radial outside looks butt of the one end of stator core 1 and stator winding 2 simultaneously, therefore the steadiness when star point copper bar 4 and looks copper bar 5 and stator winding 2 welded fastening can promote, and then when the motor operates, star point copper bar 4 and looks copper bar 5 are difficult for producing the vibration, the risk of its solder joint fracture has been reduced, the holistic NVH performance of motor has been promoted simultaneously.

As shown in fig. 1 and 2, an end surface of one end of the insulating connector 6 abutting against the stator core 1 may be a flat surface. In this embodiment, it is exemplarily illustrated that an end surface of one end of the insulating connecting member 6 abutting against the stator core 1 may be perpendicular to an axis of the stator core 1, and the end surface is disposed as a plane, so that a contact area between the end surface and the end surface of the stator core 1 may be increased, and the end surface are better attached to each other, thereby further improving the stability of the busbar assembly 3.

As shown in fig. 1 and 2, the insulating connection member 6 may have an arc shape, and a diameter of a radially inner side of the insulating connection member 6 may be equal to a diameter of a radially outer side of the stator winding 2. In the present embodiment, it is exemplarily illustrated that the radial inner side of the insulating connection member 6 and the radial outer side of the stator winding 2 have the same diameter, so that the contact area between the radial inner side of the insulating connection member 6 and the radial outer side of the stator winding 2 can be increased, the two can be better attached, and the stability of the busbar assembly 3 can be further improved.

As shown in fig. 1 and 2, the diameter of the radially outer side of the insulating connection member 6 may be equal to or less than the diameter of the radially outer side of the stator core 1. In this embodiment, it is exemplarily illustrated that, when the diameter of the radial outer side of the insulating connection member 6 is smaller than or equal to the diameter of the radial outer side of the stator core 1, the radial outer side of the insulating connection member 6 can be prevented from protruding out of the radial outer side of the stator core 1, so as to prevent the bus bar assembly 3 from being fixedly disposed on the stator winding 2 and the stator core 1, which results in an increase in the structural size of the stator assembly, and improve the structural compactness of the stator assembly.

As shown in fig. 1 and 2, the insulating connection member 6 may have an axial length equal to or less than a distance by which the end of the stator winding 2 protrudes outside the stator core 1. In the present embodiment, it is exemplarily illustrated that when the length of the insulating connecting member 6 in the axial direction is less than or equal to the distance that the end of the stator winding 2 extends outside the stator core 1, one end of the insulating connecting member 6, which is far away from the stator core 1 in the axial direction, can be prevented from extending outside the stator winding 2, and the increase of the structural size of the stator assembly, which is indicated after the bus bar assembly 3 is fixedly disposed on the stator winding 2 and the stator core 1, can also be prevented.

As shown in fig. 1 and 2, the star point copper bar 4 and/or the phase copper bar 5 may be welded and fixed to the radial outer side of the stator winding 2. In the present embodiment, it is exemplarily illustrated that at least one of the star point copper bar 4 and the phase copper bar 5 is welded and fixed to the outer side of the stator winding 2 in the radial direction. Because the busbar subassembly 3 sets up in the radial outside of stator winding 2, if star point copper bar 4 and looks copper bar 5 need with the radial inboard welded fastening of stator winding 2, then it must be walked around the tip of stator winding 2 and extend to the radial inboard of stator winding 2, can cause the structure of star point copper bar 4 and looks copper bar 5 more complicated this moment, is unfavorable for the preparation and the processing of star point copper bar 4 and looks copper bar 5. Therefore, the star point copper bars 4 and the phase copper bars 5 are welded and fixed on the radial outer side of the stator winding 2, and the structures of the star point copper bars 4 and the phase copper bars 5 can be simplified.

As shown in fig. 1 and 4, the stator winding 2 may include several groups of conductor segments 21, the star point copper bar 4 and the phase copper bar 5 may be respectively provided with an extension terminal 31, and one end of the extension terminal 31 far away from the star point copper bar 4 or the phase copper bar 5 is welded and fixed to the conductor segments 21. In the present embodiment, it is exemplarily illustrated that the conductor segments 21 may have a rectangular cross section, in this case, the motor to which the stator assembly of the present application is applied may be a flat wire motor, and the conductor segments 21 may be penetratingly disposed in the large conductor slots 11 of the stator core 1, and both ends thereof extend out of the conductor slots 11. The extension terminal 31 may have the same cross section as that of the conductor segment 21 for fixedly connecting the conductor segment 21 with the star point copper bar 4 or the phase copper bar 5. Also, the middle portion of the extension terminal 31 may be bent to adjust the extension direction thereof. The insulated connector 6 may be provided with an insulated housing 61 at one end of the extension terminal 31 and the star point copper bar 4 or the phase copper bar 5 to cover the end.

As shown in fig. 1 and 2, the stator assembly may further include a thermistor 7, the thermistor 7 may be electrically connected to the star point copper bar 4 through a first conducting wire 71, and one end of the first conducting wire 71, which is electrically connected to the star point copper bar 4, may be disposed in the insulating connector 6. In the present embodiment, it is exemplarily illustrated that the thermistor 7 can be used for measuring temperature, and the first lead 71 is used for fixedly connecting the thermistor 7 and the star point copper bar 4, so that the thermistor 7 can measure the temperature of the star point copper bar 4.

As shown in fig. 5, after the bus bar assembly 3 is obtained by injection molding, the thermistor 7 can be assembled therewith. More specifically, the insulating connector 6 may have a first channel for placing the first conducting wire 71, and one end of the first conducting wire 71 may extend into the first channel and contact with the star point copper bar 4, so as to electrically connect the star point copper bar 4 with the first conducting wire. Subsequently, the first pipe may be encapsulated with an encapsulating compound to fix the first wire 71.

As shown in fig. 1 and fig. 2, the thermistor 7 may be electrically connected to the phase copper bar 5 through a second conducting wire 72, and one end of the second conducting wire 72 electrically connected to the phase copper bar 5 may be disposed in the insulating connector 6. In the present embodiment, it is exemplarily explained that the second wire 72 is used to fixedly connect the thermistor 7 with the phase copper bar 5, so that the thermistor 7 can also measure the temperature of the phase copper bar 5. Similarly, the insulating connecting member 6 may be provided with a second channel for placing the second wire 72, and one end of the second wire 72 may extend into the second channel and abut against the phase copper bar 5, so as to achieve the purpose of electrically connecting the second channel with the phase copper bar 5, and after the electrical connection, the second channel may be encapsulated by the potting adhesive, so as to achieve the purpose of fixing the second wire 72.

As shown in fig. 1 and 4, the insulating connector 6 may be provided with a latch 62, the latch 62 may be provided with a latch 621, and the first conductive wire 71 and/or the second conductive wire 72 are/is latched and fixed in the latch 621. In the present embodiment, it is exemplarily illustrated that at least one of the snaps 62 is provided on the insulating connection member 6, and it may be injection-molded together with the insulating connection member 6. The first lead 71 or the second lead 72 is clamped and fixed in the clamping groove 621 of the buckle 62, so that the routing distribution of the first lead 71 or the second lead 72 can be controlled, and the possibility of vibration generated by the motor during operation is reduced.

As shown in fig. 1, the stator assembly may further include a phase lead line 8 for inputting or outputting current, the phase lead line 8 may include a welding terminal 81, a lead line terminal 82, and a connection wire 83, the welding terminal 81 may be welded and fixed to the phase copper bar 5, the lead line terminal 82 may be spaced from the welding terminal 81, one end of the connection wire 83 may be electrically connected to the welding terminal 81, and the other end of the connection wire 83 may be electrically connected to the lead line terminal 82.

In the present embodiment, it is exemplarily explained that the phase lead-out line 8 may be electrically connected to the phase copper bar 5 to input or output a current, and it can be understood that it is used to input a current when the motor to which the stator assembly of the present application is applied is a motor, and to output a current when the motor is a generator. The phase copper bar 5 may be provided with a welding end 51, and the welding end 51 may be flat and may be away from the axis of the stator core 1 in a direction perpendicular to the axis of the stator core 1. The welding terminal 81 may be welded and fixed to the welding end 51 to electrically connect the two. The lead terminal 82 may be welded or riveted with a nut to facilitate connection with a fitting of the motor. The connecting wire 83 may be a soft braided wire, and it may be provided in a flat shape.

The application provides a stator module's implementation principle does: after the stator winding 2 is arranged on the stator core 1, the star point copper bars 4 and the phase copper bars 5 and the insulating connecting piece 6 can be molded into a whole in advance to form the busbar assembly 3. And when moulding plastics, reserve on the insulating connecting piece 6 and leave first passageway and second passageway, stretch into first passageway and second passageway respectively with the one end of first wire 71 and second wire 72 on the thermistor 7 afterwards in to make the tip of first wire 71 and second wire 72 respectively with star point copper bar 4 and looks copper bar 5 looks butt, with thermistor 7 and star point copper bar 4 and looks copper bar 5 electric connection, adopt the pouring sealant to carry out the embedment to first passageway and second passageway afterwards, in order to realize first wire 71 and the fixed of second wire 72. After the potting adhesive is cured, the bus bar assembly 3 is fixed to the same end of the stator core 1 and the stator winding 2, specifically, one end of the insulating connecting piece 6 is abutted to one end of the stator core 1, the radial inner side of the insulating connecting piece 6 is abutted to the radial outer side of the stator winding 2, then the extension terminals 31 of the star point copper bar 4 and the phase copper bar 5 are welded and fixed to the conductor section 21 of the stator winding 2, and then the first lead 71 and the second lead 72 are clamped and fixed in the clamping groove 621 of the buckle 62.

Because the star point copper bar 4 of this application and looks copper bar 5 are fixed for busbar subassembly 3 through insulating connecting piece 6, and busbar subassembly 3 is formed with spacingly with the radial outside looks butt of the one end of stator core 1 and stator winding 2 simultaneously, therefore the steadiness when star point copper bar 4 and looks copper bar 5 and stator winding 2 welded fastening can promote, and then when the motor operation, star point copper bar 4 and looks copper bar 5 are all difficult for producing the vibration, the risk of its solder joint fracture has been reduced, the holistic NVH performance of motor has been promoted simultaneously.

The present application further provides an electric machine that includes the stator assembly provided by the present application.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (10)

1. The utility model provides a stator module, its characterized in that, stator module includes stator core (1), stator winding (2) and busbar subassembly (3), stator winding (2) run through the setting and are in on stator core (1), and the both ends of stator winding (2) all stretch out outside stator core (1), busbar subassembly (3) include star point copper bar (4), looks copper bar (5) and insulating connecting piece (6), star point copper bar (4) with looks copper bar (5) interval sets up on insulating connecting piece (6), and all with stator winding (2) welded fastening, and the one end of insulating connecting piece (6) with the one end looks butt of stator core (1), one side of insulating connecting piece (6) with the radial outside butt of stator winding (2).

2. The stator assembly according to claim 1, characterized in that the end surface of the end of the insulating connecting member (6) abutting the stator core (1) is a plane, and/or the insulating connecting member (6) is arc-shaped, and the diameter of the radially inner side of the insulating connecting member (6) is equal to the diameter of the radially outer side of the stator winding (2).

3. A stator assembly according to claim 2, characterized in that the diameter of the radially outer side of the insulating connection (6) is smaller than or equal to the diameter of the radially outer side of the stator core (1); and/or the axial length of the insulating connecting piece (6) is less than or equal to the distance of the end part of the stator winding (2) extending out of the stator core (1).

4. Stator assembly according to claim 1, characterized in that the star point copper bars (4) and/or the phase copper bars (5) are welded fixed to the radial outer side of the stator winding (2).

5. The stator assembly according to claim 4, characterized in that the stator winding (2) comprises several groups of conductor segments (21), the star point copper bars (4) and the phase copper bars (5) are provided with extension terminals (31), and one end of the extension terminal (31) far away from the star point copper bars (4) or the phase copper bars (5) is welded and fixed with the conductor segments (21).

6. The stator assembly according to claim 1, characterized in that the stator assembly further comprises a thermistor (7), the thermistor (7) is electrically connected with the star point copper bar (4) through a first conducting wire (71), and one end of the first conducting wire (71) electrically connected with the star point copper bar (4) is arranged in the insulating connector (6).

7. The stator assembly according to claim 6, characterized in that the thermistor (7) is electrically connected with the phase copper bar (5) through a second wire (72), and one end of the second wire (72) electrically connected with the phase copper bar (5) is arranged in the insulating connector (6).

8. The stator assembly according to claim 7, characterized in that a buckle (62) is arranged on the insulating connector (6), a clamping groove (621) is arranged on the buckle (62), and the first conducting wire (71) and/or the second conducting wire (72) are/is clamped and fixed in the clamping groove (621).

9. The stator assembly according to claim 1, characterized in that the stator assembly further comprises a phase leading-out wire (8) for inputting or outputting current, the phase leading-out wire (8) comprises a welding terminal (81), a leading-out wire terminal (82) and a connecting wire (83), the welding terminal (81) is welded and fixed with the phase copper bar (5), the leading-out wire terminal (82) and the welding terminal (81) are arranged at intervals, one end of the connecting wire (83) is electrically connected with the welding terminal (81), and the other end of the connecting wire (83) is electrically connected with the leading-out wire terminal (82).

10. An electrical machine comprising a stator assembly according to any of claims 1-9.

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