CN212660024U

CN212660024U - Stator convergence unit assembly

Info

Publication number: CN212660024U
Application number: CN202021373088.9U
Authority: CN
Inventors: 李志宇; 田博; 唐佩伦; 王铁柱; 孙羽; 韩丹
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-03-05
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to a stator confluence unit assembly, which comprises a bracket, a U-phase bus bar, a W-phase bus bar, a V-phase bus bar, a neutral bus bar and a temperature sensor, wherein the U-phase bus bar, the W-phase bus bar, the V-phase bus bar, the neutral bus bar and the temperature sensor are integrally molded in the bracket; the U-phase busbar, the W-phase busbar, the V-phase busbar and the neutral busbar are arranged along the radial direction of the bracket concentrically with the stator, and meanwhile, safe insulation distances are reserved among the busbar, the W-phase busbar, the V-phase busbar and the neutral busbar. The utility model discloses a female row of three-phase, the female row of neutral and temperature sensor mould plastics in the support, and accessible welding mode fixes the leading-out terminal at the flat wire motor, has shortened the overall dimension of flat wire motor, has simplified the kind of flat wire motor winding, and integrated temperature sensor has simplified the assembly process of flat wire motor stator simultaneously, has improved production efficiency, product uniformity and degree of automation, has the significance in actual volume production.

Description

Stator convergence unit assembly

Technical Field

The utility model belongs to the technical field of the stator winding unit that converges, a this kind of stator unit assembly that converges is related to.

Background

With the popularization of new energy vehicles, driving motors with high power density are the target of continuous pursuit of various automobile factories. The motor stator assembly is used as a key part of a driving motor, and a circular wire motor scheme is generally adopted. Compared with a round wire motor, the flat wire motor has the characteristics of high slot filling rate, small volume, high power density, suitability for automatic production and the like, and becomes the development direction of a driving motor. But the winding is various in types and complex in structure, so that the design and the manufacture of the flat wire motor are difficult to achieve. The method is characterized in that a stator winding bus unit is arranged at a wire outlet end of a flat wire motor, cross wires between different layers are reduced, and the method becomes a common solution, for example, a patent document 'a bus unit of a motor stator' (WO 2018105595A1), a bus bar is integrated into a bus bar bracket, the bus bar is arranged at one side of the stator to realize the wire outlet requirement of the stator, but a neutral wire bus bar and a temperature sensor are not arranged, a welding neutral wire bus bar is additionally arranged, and the temperature sensor is installed. Further, as in the patent document, "a radial bus bar of a stator" (JP589496B2), it is used to concentrate the welded ends of the windings, realizing three-phase outgoing lines, but not integrating a temperature sensor. The patent document "a busbar unit and stator assembly for a motor stator" (DE10201637a1) also does not integrate a temperature sensor, and the patent does not make full use of the radial space of the stator by adopting the axial arrangement of the busbars.

The stator confluence unit does not comprise a temperature sensor, and a temperature sensor installation and fixing process is required to be added in the actual manufacturing process of the flat-wire motor stator. Usually, a binding method, an adhesion method or a direct insertion method is adopted to fix the temperature sensor, so that the defects of insecure fixation, poor consistency of fixed positions and the like of the temperature sensor are easily caused, and further the temperature sensor cannot accurately reflect the actual temperature of the flat-wire motor stator, so that the motor stator is over-heated, and even the motor is damaged. Meanwhile, the bus bar is arranged along the axial direction of the stator, and the insulation among the bus bars is considered, so that the axial size of the bus bar unit is easy to be larger.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a stator unit assembly that converges, this assembly is fixed firm, the position uniformity is good to volume minimizing has been realized.

In order to solve the technical problem, the stator confluence unit assembly of the utility model comprises a bracket, a U-phase bus bar, a W-phase bus bar, a V-phase bus bar, a neutral bus bar and a temperature sensor, wherein the U-phase bus bar, the W-phase bus bar, the V-phase bus bar, the neutral bus bar and the temperature sensor are integrally injection molded in the bracket; the U-phase busbar, the W-phase busbar, the V-phase busbar and the neutral busbar are arranged along the radial direction of the bracket concentrically with the stator, and meanwhile, safe insulation distances are reserved among the busbar, the W-phase busbar, the V-phase busbar and the neutral busbar.

The temperature sensor is arranged in the groove of the bracket.

The temperature sensor is fixed through a plurality of convex ribs in the groove, so that a probe of the temperature sensor is tightly attached to the surface of the V-phase busbar.

The temperature sensor is encapsulated in the bracket.

The bracket is provided with through holes corresponding to the welding parts of the U-phase busbar, the W-phase busbar and the V-phase busbar and the three welding parts corresponding to the neutral busbar respectively.

And U-shaped welding feet are respectively arranged at one ends of the U-phase busbar, the W-phase busbar and the V-phase busbar, which are used for welding the flat wire winding.

And U-shaped welding feet are respectively arranged at three positions of the neutral bus bar for three-phase star connection of the flat wire winding.

The support be provided with the recess that is used for the lightweight, the female insulating part parcel in the non-groove position of support of arranging of U looks female, the female row of W looks, the female row of V looks, the female row of neutral.

The bracket is provided with a key groove for positioning the flat wire stator in the circumferential direction during assembly.

The insulation parts of the U-phase busbar, the W-phase busbar, the V-phase busbar and the neutral busbar can be fixed in the bracket by local injection molding integration, and the exposed parts are coated with insulating epoxy paint.

The utility model discloses a female row of three-phase, the female row of neutral and temperature sensor mould plastics in the support, and accessible welding mode fixes the leading-out terminal at the flat wire motor, has shortened the overall dimension of flat wire motor, has simplified the kind of flat wire motor winding, and integrated temperature sensor has simplified the assembly process of flat wire motor stator simultaneously, has improved production efficiency, product uniformity and degree of automation, has the significance in actual volume production.

The utility model discloses with temperature sensor integration in the unit assembly that converges, through set up specific structure on the support, it is spacing with temperature sensor, make temperature sensor and the female row of the unit assembly that converges closely laminate, solved shortcoming such as fixed insecure and position uniformity difference, female arranging along the stator radial concentric arrangement simultaneously, the radial space of make full use of stator, compression axial space has realized the volume minimizing. The U-phase busbar, the W-phase busbar, the V-phase busbar and the neutral busbar are respectively provided with a U-shaped welding leg at one end for welding the flat wire winding, so that the welding reliability can be improved.

Drawings

FIG. 1 is a schematic view of a bus bar unit assembly.

FIG. 2 is a schematic diagram of bus bar distribution of the bus unit assembly.

FIG. 3 is a schematic view of a bus bar unit assembly bracket.

In the figure: 1, a U-phase busbar; a U-shaped solder fillet; 2, W-phase busbar; a U-shaped solder tail; a V-phase busbar; a U-shaped solder tail; 4. a neutral bus bar; 41. u-shaped

solder feet

42, 43; 5. a support; 51. 52, 53. through holes; 541. 542, 543, a through hole; 55. a trench; 551. 552, 553, 554, ribs; 56. a keyway; 6. a temperature sensor.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

As shown in fig. 1, the utility model discloses a stator unit assembly that converges includes that U arranges 1, W arranges 2, V arranges 3, the female 4, support 5 and the temperature sensor 6 of arranging mutually that U arranges 1, W arranges 2, V arranges 3, the female 4 and the temperature sensor 6 integration of arranging mutually that arrange 4 and the temperature sensor of arranging mutually that U arranges mutually, W.

The U-phase busbar 1, the W-phase busbar 2, the V-phase busbar 3, the neutral busbar 4 and the stator are concentrically arranged along the radial direction of the bracket 5, and a certain safe insulation distance is reserved between the U-phase busbar and the stator.

The temperature sensor 6 is arranged in the groove 55 of the bracket 5, the temperature sensor 6 is fixed through four

ribs

551, 552, 553 and 554 in the groove 55, so that the probe of the temperature sensor 6 is tightly attached to the surface of the V-phase busbar 3, and the temperature sensor 6 is fixed in the bracket 5 by adopting a glue pouring process.

The welding parts of the bracket 5 corresponding to the U-phase busbar 1, the W-phase busbar 2 and the V-phase busbar 3 are respectively provided with through

holes

51, 52 and 53, and the three welding parts corresponding to the neutral busbar 4 are provided with through

holes

541, 542 and 543 for leading out winding welding pins and simultaneously playing a role in limiting.

U arrange 1, W arrange 2, V arrange 3 that are used for the one end of flat wire winding welding of arranging mutually arrange mutually and set up U-shaped

leg

11, 21, 31 respectively, the other end can change the direction as required by the connection, and all set up the through-hole or the riveting nut that are used for bolted connection.

The neutral bus bar 4 is provided with three

U-shaped welding pins

41, 42 and 43 for three-phase star connection of the flat wire winding.

The support 5 be provided with and be used for the recess of lightweight, the female insulating part parcel in the non-groove position of support of arranging 1 of U looks female, the female 2 of W looks female, the female 3 of V looks female, the female 4 of neutral meets female 1 of U looks female, the female 2 of W looks female, the female 3 of V looks female, the female 4 location of neutral and insulating withstand voltage requirement. The bracket 5 is provided with a key groove 56 for positioning in the circumferential direction when the flat wire stator is assembled.

Considering that the U-phase busbar 1, the W-phase busbar 2, the V-phase busbar 3 and the neutral busbar 4 have different resistance values, the structure is optimized, the sectional areas of the V-phase busbar 3 and the neutral busbar 4 are properly increased, and the resistance value difference of each busbar is improved.

The U-phase busbar 1, the W-phase busbar 2, the V-phase busbar 3 and the neutral busbar 4 are integrally molded in the support 5, the support not only plays a role of fixing the busbars, but also provides insulation and voltage resistance protection, so that the radial direction distribution of the busbars is more concentrated, and the volume of a busbar unit is further reduced.

The temperature sensor is integrated and injected in the support, the probe is limited and tightly attached to the busbar through the support, the glue is filled and sealed, the temperature sensor is firmly fixed, meanwhile, the consistency of the temperature measurement position of the temperature sensor is improved, and the process and the working procedure for assembling the flat wire motor stator assembly are simplified.

The insulation parts of the U-phase busbar 1, the W-phase busbar 2, the V-phase busbar 3 and the neutral busbar 4 can be fixed in the bracket by local injection molding integration, and the exposed parts are coated with insulating epoxy paint to realize the insulating and voltage-resisting functions.

The position sequence of the U-phase busbar 1, the W-phase busbar 2, the V-phase busbar 3 and the neutral busbar 4 can be correspondingly adjusted according to different principles of the flat-wire motor stator winding.

Claims

1. A stator busbar unit assembly is characterized by comprising a bracket (5), a U-phase busbar (1), a W-phase busbar (2), a V-phase busbar (3), a neutral busbar (4) and a temperature sensor (6), wherein the U-phase busbar, the W-phase busbar, the V-phase busbar (3), the neutral busbar and the temperature sensor are integrally injection-molded in the bracket (5); the U-phase busbar (1), the W-phase busbar (2), the V-phase busbar (3), the neutral busbar (4) and the stator are concentrically arranged along the radial direction of the support (5), and meanwhile, safe insulation distances are reserved among the U-phase busbar, the W-phase busbar (2), the V-phase busbar (3) and the neutral busbar.

2. A stator busbar unit assembly according to claim 1, wherein said temperature sensor (6) is arranged in a groove (55) of the carrier (5).

3. The stator busbar unit assembly according to claim 2, wherein the temperature sensor (6) is fixed by a plurality of ribs in the groove (55), so that a probe of the temperature sensor (6) is tightly attached to the surface of the V-phase busbar (3).

4. A stator bar unit assembly according to claim 2 or 3, wherein the temperature sensor (6) is encapsulated in the carrier (5).

5. The stator busbar unit assembly according to claim 1, wherein the bracket (5) is provided with through holes corresponding to the welding positions of the U-phase busbar (1), the W-phase busbar (2) and the V-phase busbar (3) and corresponding to the three welding positions of the neutral busbar (4).

6. The stator busbar unit assembly according to claim 1, wherein the U-phase busbar (1), the W-phase busbar (2) and the V-phase busbar (3) are provided with U-shaped welding feet at one ends for welding the flat wire winding respectively.

7. The stator busbar unit assembly according to claim 1, wherein the neutral busbar (4) is provided with U-shaped welding feet at three positions for three-phase star connection of the flat wire winding.

8. The stator busbar unit assembly according to claim 1, wherein the bracket (5) is provided with a groove for light weight, and insulating parts of the U-phase busbar (1), the W-phase busbar (2), the V-phase busbar (3) and the neutral busbar (4) are wrapped at non-groove positions of the bracket.

9. A stator bar unit assembly according to claim 1, wherein the bracket (5) is provided with a key slot (56) for circumferential positioning during assembly of the flat wire stator.

10. The stator busbar unit assembly according to claim 1, wherein the insulation parts of the U-phase busbar (1), the W-phase busbar (2), the V-phase busbar (3) and the neutral busbar (4) are locally injection-molded, integrated and fixed in a bracket, and the exposed part is coated with an insulating epoxy paint.