CN115940475A

CN115940475A - Motor stator busbar and motor with same

Info

Publication number: CN115940475A
Application number: CN202211565794.7A
Authority: CN
Inventors: 韩丹; 赵越; 高一; 苍衍
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-04-07

Abstract

The invention provides a motor stator bus bar and a motor with the same, wherein the motor stator bus bar comprises: insulating support, female portion and the temperature sensor of arranging. At least part of the insulating support is of an arc-shaped structure, and a hollow part is arranged on the top surface of the insulating support. The female portion shaping of arranging of part is in the inside of insulating support, and female portion of arranging has four female arranging, and four female arranging all are equipped with wiring portion and pin on arranging along motor stator's axial direction interval ground, and wiring portion and pin all expose in insulating support's outside. The temperature sensor passes through the hollow part and then is attached to the top surface of the busbar part. According to the invention, the pins of the busbar are electrically connected with the motor winding, the temperature of the motor winding is transmitted to the corresponding busbar through the pins, and the temperature sensor indirectly realizes the temperature measurement of the motor winding by carrying out the temperature measurement on the busbar. And other connecting parts are not required to be additionally arranged, and only the hollow part is arranged on the top surface of the insulating support, so that the indirect connection between the temperature sensor and the motor winding is realized.

Description

Motor stator busbar and motor with same

Technical Field

The invention relates to the technical field of motors, in particular to a motor stator bus bar and a motor with the same.

Background

Along with the improvement of new energy automobile to power density requirement, the pin winding motor is from four layers of pin windings to six layers of pin windings, and eight layers of pin windings again, and the number of piles increases gradually, and the structure is complicated gradually, and corresponding lead-out wire is also more and more with it, in order to reduce the assembly degree of difficulty and the frequency of making mistakes, promotes stator assembly outward appearance uniformity and reliability, also for more convenient realization automated production simultaneously, the pin winding adopts the busbar to carry out the plastic standard to the lead-out wire and connects more.

The conventional bus bar is large in size and complex in structure, and cannot be used for installing a temperature sensor, so that the temperature of a motor winding cannot be monitored in real time.

In view of the above problems, no effective solution has been proposed.

Disclosure of Invention

The invention mainly aims to provide a motor stator bus bar and a motor with the same, and aims to solve the technical problem that the installation of a temperature sensor cannot be considered at the same time.

In order to achieve the above object, according to one aspect of the present invention, there is provided a stator bus bar of a motor, including: the insulating support is at least partially of an arc-shaped structure, and a hollow part is arranged on the top surface of the insulating support; the motor stator comprises a bus bar part, a plurality of bus bars and a plurality of insulating supports, wherein part of the bus bar part is formed inside the insulating supports, the bus bar part is provided with four bus bars, the four bus bars are arranged at intervals along the axial direction of the motor stator, each bus bar is provided with a wiring part and a pin, and the wiring part and the pin are exposed outside the insulating supports; and the temperature sensor penetrates through the hollow part and then is attached to the top surface of the busbar part.

Furthermore, a plurality of supporting plates are circumferentially arranged on the insulating support, a clamping groove is formed in one side, far away from the inner diameter of the insulating support, of each supporting plate, and the connecting wire of the temperature sensor is clamped in the clamping groove.

Furthermore, the opening end of the clamping groove is provided with a guide port, and the guide port is of a V-shaped structure.

Further, the insulating support top end department shaping has the boss, and the boss encircles the fretwork portion and sets up.

Furthermore, an arc-shaped plate extending outwards is arranged at the outer edge of the bottom surface of the insulating support.

And furthermore, a reinforcing rib is arranged between the arc-shaped plate and the outer side wall of the insulating support.

Furthermore, a plurality of clapboards are formed on the insulating support and located between two adjacent pins.

Further, insulating support includes segmental arc and straightway, and the pin sets up through the inward flange of segmental arc to inboard extension, and wiring portion sets up through the vertical upwards extension of straightway.

Further, the cross-sectional width of the pin is larger than the cross-sectional width of the outgoing line of the winding.

According to another aspect of the present invention, there is provided an electric machine comprising a machine stator busbar, the machine stator busbar being as described above.

According to the technical scheme, the four busbars are formed inside the insulating support, the four busbars are arranged at intervals along the axial direction of the motor stator, wiring portions and pins of the busbars are exposed outside the insulating support, and the temperature sensor is attached to the tops of the busbars after passing through hollow portions in the top surface of the insulating support. The pin of female arranging is connected with motor winding electricity, and motor winding's temperature transmits to corresponding female arranging through the pin on, and temperature sensor carries out the temperature measurement through arranging female, and indirect realization is to motor winding's temperature measurement. Four female injection moulding that arrange need not to add other adapting unit in insulating support's inside, only set up fretwork portion at insulating support's top surface, realize temperature sensor and motor winding's indirect connection, compact structure and simple, and the installation is simple and easy.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a stator bar of an electric machine according to the invention;

FIG. 2 shows an exploded schematic view of an embodiment of a motor stator bar according to the present invention;

FIG. 3 is a schematic view showing the connection between the motor stator bus bars and the motor stator;

fig. 4 shows an enlarged schematic view of region a in fig. 3.

Wherein the figures include the following reference numerals:

10. an insulating support; 11. an arc-shaped section; 12. a straight line segment; 13. a support plate; 14. a card slot; 15. a boss; 16. an arc-shaped plate; 17. reinforcing ribs; 18. a partition plate;

20. a busbar section; 21. a V-phase busbar; 22. a U-phase busbar; 23. w-phase busbar; 24. the neutral point is connected with the busbar; 25. a wiring portion; 26. a pin;

30. a temperature sensor; 31. a connecting wire;

40. a stator core; 41. a winding; 42. and (6) leading out wires.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1-4, according to an embodiment of the present application, a motor stator bar is provided.

Specifically, the motor stator bus bar includes: insulating support 10, female portion 20 and temperature sensor 30. At least part of the insulating support 10 is an arc-shaped structure, and a hollow part is arranged on the top surface of the insulating support 10. Partial female portion 20 shaping of arranging is in the inside of insulating support 10, and female portion 20 of arranging has four female arranging, and four female arranging sets up along motor stator's axial direction interval, all is equipped with wiring portion 25 and pin 26 on each female arranging, and wiring portion 25 and pin 26 all expose in the outside of insulating support 10. The temperature sensor 30 is attached to the top surface of the busbar portion 20 after passing through the hollow portion.

It should be noted that four busbars are injection molded inside the insulating bracket 10, as shown in fig. 2, the four busbars include: the insulation support comprises a V-phase busbar 21, a U-phase busbar 22, a W-phase busbar 23 and a neutral point connecting busbar 24, wherein the shape of each busbar is matched with that of the insulation support 10. The pin 26 and the wiring portion 25 are both disposed along an edge of the busbar, the pin 26 is disposed perpendicular to the busbar, and the wiring portion 25 is disposed perpendicular to the busbar, wherein the pin 26 is disposed along an inner edge of the busbar to be connected to an outgoing line 42 of the motor winding 41.

In the embodiment of the application, four female shaping of arranging are in insulating support 10's inside, and four female arranging set up along motor stator's axial direction interval, and wiring portion 25 and pin 26 of each female arranging all expose in insulating support 10's outside, and temperature sensor 30 pastes the top of establishing at female arranging after the fretwork portion on insulating support 10 top surface. The pin 26 of the busbar is electrically connected with the motor winding 41, the temperature of the motor winding 41 is transmitted to the corresponding busbar through the pin 26, and the temperature sensor 30 indirectly realizes the temperature measurement of the motor winding 41 by carrying out the temperature measurement on the busbar. Four female injection moulding that arrange need not to add other adapting unit in insulating support 10's inside, only set up fretwork portion at insulating support 10's top surface, realize temperature sensor 30 and motor winding 41's indirect connection, compact structure and simple and easy installation.

As shown in fig. 1 and 2, a plurality of support plates 13 are arranged on the circumference of the insulating support 10, a slot 14 is formed on one side of each support plate 13 away from the inner diameter of the insulating support 10, and a connection line 31 of the temperature sensor 30 is clamped in the slot 14.

It should be noted that, the supporting plate 13 is vertically connected to the insulating support 10, and the clamping groove 14 is formed on the side of the supporting plate 13 away from the inner diameter of the insulating support 10, that is, the connecting wire 31 is arranged along the outer edge of the insulating support 10, so that the distance between the connecting wire 31 and the motor winding 41 is kept, and the connecting wire 31 is prevented from being scalded by the motor winding 41 with a high temperature, and the temperature sensor 30 cannot be normally used.

Wherein, for the threading convenience, the open end of draw-in groove 14 is equipped with the guide mouth, and the guide mouth is V-arrangement structure. Specifically, the caliber of the guiding opening is larger than the outer diameter of the connecting wire 31, and the width of the slot 14 is slightly smaller than the outer diameter of the connecting wire 31, so as to prevent the connecting wire 31 from separating from the slot 14.

As shown in fig. 1 and 2, a boss 15 is formed at the top end of the insulating bracket 10, and the boss 15 is disposed around the hollow portion. Specifically, the hollow portion is a rectangular structure, the boss 15 is a U-shaped structure surrounding the hollow portion, and an opening of the U-shaped structure is arranged toward the line outgoing direction of the connection line 31. The arrangement of boss 15 plays the guard action to temperature sensor 30, and temperature sensor 30's top surface is less than the top surface of boss 15 promptly, avoids temperature sensor 30 to damage because of the collision.

As shown in fig. 2, an arc plate 16 extending outward is provided at an outer edge of the bottom surface of the insulating support 10, and a reinforcing rib 17 is provided between the arc plate 16 and an outer side wall of the insulating support 10. The arrangement of the arc-shaped plates 16 and the reinforcing ribs 17 increases the stability of the edge-bonding support.

As shown in fig. 1 and 2, a plurality of spacers 18 are formed on the insulating support 10, and the spacers 18 are located between two adjacent pins 26. The arrangement of the partition plate 18 increases the creepage distance between the two pins 26, that is, the two pins 26 do not need to be arranged at a longer distance, so that a sufficient safety distance can be ensured, and the motor stator bus bar can be further connected with the multilayer motor winding 41, so that the whole structure is more compact.

It should be noted that, in this embodiment, the motor winding 41 has two parallel branches, that is, two pins 26 are disposed on the V-phase bus bar 21, the U-phase bus bar 22, and the W-phase bus bar 23, six pins 26 are disposed on the neutral point connection bus bar 24, and the positions of the separators 18 and the number of the pins 26 are arranged.

As shown in fig. 1 and 2, the insulating support 10 includes an arc segment 11 and a straight segment 12, the lead 26 is disposed extending inward through an inner edge of the arc segment 11, and the wire connection portion 25 is disposed extending vertically upward through the straight segment 12.

It should be noted that each pin 26 extends from the inner edge of the arc segment 11 and is welded to the motor winding 41. Each wiring portion 25 extends from the inner edge of the straight section 12 so that each wiring portion 25 is positioned on the same straight line for connection with the inverter.

As shown in fig. 3 and 4, in order to make the lead 26 completely contact with the lead wire 42 of the motor winding 41, the cross-sectional width of the lead 26 is larger than the cross-sectional width of the lead wire 42 of the winding 41, thereby avoiding the problem that the lead 26 cannot completely contact with the lead wire due to an alignment error.

In order to make the structure of the motor stator bus bar more compact, the lead wires 42 of the windings 41 need to be led out from the same end of the stator core 40.

According to another embodiment of the present invention, there is provided a motor including a motor stator bus bar, the motor stator bus bar being the motor stator bus bar in the above-described embodiments.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. 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 a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric machine stator bar, comprising:

the insulation support (10), at least part of the insulation support (10) is of an arc structure, and a hollow part is arranged on the top surface of the insulation support (10);

the motor stator comprises a busbar part (20), wherein part of the busbar part (20) is formed inside an insulating support (10), the busbar part (20) is provided with four busbars which are arranged at intervals along the axial direction of the motor stator, each busbar is provided with a wiring part (25) and a pin (26), and the wiring parts (25) and the pins (26) are exposed outside the insulating support (10);

the temperature sensor (30) penetrates through the hollow-out part and then is attached to the top surface of the busbar part (20).

2. The motor stator busbar according to claim 1, wherein a plurality of support plates (13) are arranged on the circumference of the insulating support (10), a clamping groove (14) is formed on one side of each support plate (13) far away from the inner diameter of the insulating support (10), and a connecting wire (31) of the temperature sensor (30) is clamped in the clamping groove (14).

3. The electrical machine stator bar according to claim 2, wherein the open end of the slot (14) is provided with a guide opening, the guide opening being of a V-shaped configuration.

4. The motor stator busbar according to claim 1, wherein a boss (15) is formed at the top end of the insulating support (10), and the boss (15) is disposed around the hollowed-out portion.

5. The electrical machine stator bar according to claim 1, wherein the insulating support (10) has an outwardly extending arc-shaped plate (16) at the outer edge of the bottom surface.

6. The electrical machine stator busbar according to claim 5, wherein a reinforcing rib (17) is provided between the arc-shaped plate (16) and the outer side wall of the insulating support (10).

7. The electric machine stator busbar according to claim 1, wherein a plurality of spacers (18) are formed on the insulating support (10), the spacers (18) being located between two adjacent pins (26).

8. The electric machine stator busbar according to claim 1, wherein the insulating support (10) includes an arc-shaped section (11) and a straight section (12), the lead pin (26) is provided extending inwardly through an inner edge of the arc-shaped section (11), and the wire connection portion (25) is provided extending vertically upwardly through the straight section (12).

9. The electric machine stator busbar according to claim 1, wherein the pins (26) have a cross-sectional width greater than a cross-sectional width of the lead wires (42) of the windings (41).

10. An electric machine comprising a machine stator busbar, characterized in that the machine stator busbar is a machine stator busbar according to any one of claims 1 to 9.