CN116683668A - Stator assembly and motor - Google Patents

Abstract

The application provides a stator assembly and a motor, wherein the stator assembly comprises: the stator comprises a stator core and a plurality of winding coils, wherein the stator core comprises a plurality of tooth parts which are arranged around the central line of the stator core at intervals so as to form an inner core hole, the winding coils are sleeved on the tooth parts in a one-to-one correspondence manner, and an interval is formed between any two adjacent winding coils; the plurality of row of inserting, a plurality of row of inserting and a plurality of intervals that a plurality of winding coil formed set up in one-to-one, and each a plurality of row of inserting all includes the plate body of at least part inserted in corresponding interval department, is provided with the coolant flow channel that is used for the outer space of stator and iron core hole intercommunication on the plate body of at least one row of inserting, has solved the relatively poor problem of cooling effect to the stator of motor among the prior art.

Description

Stator assembly and motor

Technical Field

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

Background

At present, most of winding coils of an axial flux motor are wound by flat wires, however, after winding and mounting of the winding coils of the axial flux motor by using the flat wires, the precision is low, uneven gap distribution among adjacent coils can be generated, and the whole immersed cooling has no designed oil way, so that cooling liquid is difficult to cool the winding coils through gaps among the adjacent coils in the cooling process of a stator, and therefore, the pressure of the cooling liquid at each part of the stator is uneven, the stator is heated unevenly, the cooling effect is poor, and the whole service life of the motor is influenced.

Disclosure of Invention

The application mainly aims to provide a stator assembly and a motor, which are used for solving the problem of poor cooling effect on a stator of the motor in the prior art.

To achieve the above object, according to one aspect of the present application, there is provided a stator assembly comprising: the stator comprises a stator core and a plurality of winding coils, wherein the stator core comprises a plurality of tooth parts which are arranged around the central line of the stator core at intervals so as to form an inner core hole, the winding coils are sleeved on the tooth parts in a one-to-one correspondence manner, and an interval is formed between any two adjacent winding coils; the plurality of power strip sets up with a plurality of intervals that a plurality of winding coils formed one by one, and each a plurality of power strip all includes the plate body of at least part plug in setting up in corresponding interval department, is provided with the coolant flow channel that is used for communicating the outer space of stator with the iron core hole on the plate body of at least one power strip.

Further, the stator assembly comprises an outer limiting ring, the outer limiting ring is sleeved outside the stator and is arranged at intervals with the winding coils to form an annular outer cavity, and the first ends of the power strip are connected with the outer limiting ring.

Further, the stator assembly further comprises an inner limiting ring, wherein the inner limiting ring is inserted into the inner hole of the iron core and is arranged at intervals with the winding coils to form an annular inner cavity, and the second ends of the power strip are connected with the inner limiting ring.

Further, the plurality of power strip includes: the double-opening power strip comprises a plate body, wherein a first communication hole, a second communication hole and a third communication hole are formed in the plate body of the double-opening power strip at intervals, the first communication hole is communicated with an annular outer cavity, the second communication hole is communicated with a corresponding interval, and the third communication hole is communicated with an annular inner cavity; wherein, the first communication hole and the second communication hole and the third communication hole are communicated through a cooling liquid flow hole arranged on the plate body; and/or the full-baffle power strip, wherein the plate body of the full-baffle power strip is of a full-closed plate structure; and/or the outer baffle insert row, the plate body of the outer baffle insert row is provided with a second communication hole and a third communication hole at intervals, the second communication hole is communicated with the corresponding interval, and the third communication hole is communicated with the annular inner cavity; wherein the second communication hole and the third communication hole are communicated through a cooling liquid flow through hole arranged on the plate body; and/or an inner baffle power strip, wherein a first communication hole and a second communication hole are formed in the plate body of the inner baffle power strip at intervals, the first communication hole is communicated with the annular outer cavity, and the second communication hole is communicated with the corresponding interval; wherein the first communication hole and the second communication hole are communicated with each other through a coolant flow hole provided in the plate body.

Further, a cooling liquid inlet and a cooling liquid outlet for cooling liquid to enter and exit are formed in the outer limiting ring, the cooling liquid inlet and the cooling liquid outlet are respectively and correspondingly arranged with two adjacent winding coils in the winding coils, and the full baffle power strip is inserted at the interval between the two corresponding winding coils.

Further, the plurality of row of inserting is divided into a plurality of row of inserting group that set gradually along the predetermined direction of center line around stator core, and each row of inserting group all includes three row of inserting, and a plurality of row of inserting group includes: the first power strip comprises a full baffle power strip and two double-opening power strips which are sequentially arranged along a preset direction surrounding the central line of the stator core; the second power strip group comprises an outer baffle power strip and two double-opening power strips which are sequentially arranged along a preset direction surrounding the central line of the stator core; the third power strip group comprises an inner baffle power strip and two double-opening power strips which are sequentially arranged along a preset direction surrounding the central line of the stator core; the power strip group adjacent to the first power strip group is a second power strip group or a third power strip group, the power strip group adjacent to the second power strip group is a first power strip group or a third power strip group, and the power strip group adjacent to the third power strip group is a first power strip group or a second power strip group.

Further, a plurality of avoidance portions for allowing the first ends of a plurality of power strip to be inserted in a one-to-one correspondence mode are arranged on the outer limiting ring, each power strip comprises a sealing handle arranged at the first end of the plate body, each avoidance portion comprises an outer limiting hole and an outer inserting hole which are communicated in sequence along the direction close to the inner hole of the iron core, the outer limiting holes are in plug-in fit with the sealing handles, and the outer inserting holes are in plug-in fit with the plate body.

Further, the cross section of the sealing handle is an oblong cross section, and the outer limiting hole is an oblong hole; the cross section of the plate body is a rectangular cross section, and the external insertion hole is a rectangular hole; wherein, the cross section of sealing handle is greater than the cross section of plate body.

Further, be provided with a plurality of interior mounting grooves that are used for supplying a plurality of second ends of inserting row one-to-one to insert on the interior spacing ring, each inserts row all including setting up the fillet connecting rod at the second end of plate body, each interior mounting groove all with corresponding fillet connecting rod grafting cooperation.

According to another aspect of the present application there is provided an electric machine comprising a stator assembly as described above.

By applying the technical scheme of the application, the stator assembly comprises: the stator comprises a stator core and a plurality of winding coils, wherein the stator core comprises a plurality of tooth parts which are arranged around the central line of the stator core at intervals so as to form an inner core hole, the winding coils are sleeved on the tooth parts in a one-to-one correspondence manner, and an interval is formed between any two adjacent winding coils; the plurality of power strip sets up with a plurality of intervals that a plurality of winding coils formed one by one, and each a plurality of power strip all includes the plate body of at least part plug in setting up in corresponding interval department, is provided with the coolant flow channel that is used for communicating the outer space of stator with the iron core hole on the plate body of at least one power strip. Therefore, the stator assembly solves the technical problems that when the flat wire is used as the winding coil of the axial flux motor, after the winding coil of the axial flux motor integrally enters the shell, gaps between two adjacent winding coils of the motor stator are possibly uneven, so that cooling liquid is difficult to pass through the gaps, and finally the motor stator is heated unevenly and has poor cooling effect by arranging the plurality of power strip at a plurality of intervals formed by the winding coils.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 illustrates a top view of an embodiment of a stator assembly according to the present application;

FIG. 2 illustrates a schematic structural view of the stator assembly illustrated in FIG. 1;

FIG. 3 illustrates a schematic diagram of a dual opening strip of the stator assembly shown in FIG. 2;

FIG. 4 illustrates a schematic diagram of a full barrier power strip of the stator assembly shown in FIG. 2;

FIG. 5 illustrates a schematic diagram of the outer baffle row of the stator assembly shown in FIG. 2;

FIG. 6 illustrates a schematic diagram of the internal baffle row of the stator assembly shown in FIG. 2;

FIG. 7 illustrates a schematic view of the outer stop collar of the stator assembly of FIG. 1;

fig. 8 shows a schematic view of the structure of the inner stop collar of the stator assembly shown in fig. 1.

Wherein the above figures include the following reference numerals:

1. a power strip; 11. the double-opening power strip; 12. full baffle power strip; 13. an outer baffle power strip; 14. an inner baffle power strip; 100. a plate body; 101. a coolant flow through hole; 102. a sealing handle; 103. a rounded corner connecting rod; 104. a connecting rod; 1051. a first communication hole; 1052. a second communication hole; 1053. a third communication hole;

2. an outer limit ring; 201. a cooling liquid inlet; 202. a cooling liquid outlet; 203. an outer limit hole; 204. an outer insertion hole;

3. an inner limit ring; 301. an inner mounting groove; 302. an inner limiting ring bolt hole;

4. a stator; 401. a winding coil; 402. a tooth portion; 403. and a stator core.

Detailed Description

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

As shown in fig. 1 to 8, the present application provides a stator assembly including: the stator 4, the stator 4 includes stator core 403 and a plurality of winding coils 401, the stator core 403 includes a plurality of teeth 402 which are set up around the centre line of the stator core at intervals, in order to enclose the core inner hole, a plurality of winding coils 401 are sleeved on a plurality of teeth 402 in one-to-one correspondence, and the interval is formed between any two adjacent winding coils 401; the plurality of power strip 1, the plurality of power strip 1 and the plurality of intervals that the plurality of winding coils 401 formed set up in a one-to-one correspondence, and each of the plurality of power strip 1 includes the plate body 100 of at least partly inserting in corresponding interval department, is provided with the coolant flow channel that is used for communicating the outside space of stator 4 with the iron core hole on the plate body 100 of at least one power strip 1.

In this way, the stator assembly of the present application solves the technical problems that when the flat wire is used as the winding coil of the axial flux motor, after the winding coil of the axial flux motor integrally enters the casing, the gap between two adjacent winding coils of the motor stator may be uneven, so that the cooling liquid is difficult to pass through the gap, and finally the motor stator is heated unevenly, and the cooling effect is poor, by arranging the plurality of power strip 1 at a plurality of intervals formed by the plurality of winding coils 401.

In addition, each power strip 1 is disposed in a space formed by the corresponding two winding coils 401, so that the corresponding two winding coils 401 are not subjected to an additional tangential force in the operating state of the motor.

As shown in fig. 1, 2 and 7, the stator assembly includes an outer limit ring 2, and the outer limit ring 2 is sleeved outside the stator 4 and is arranged at intervals with the plurality of winding coils 401 to form an annular outer cavity, and the first end of each power strip 1 is connected with the outer limit ring 2.

As shown in fig. 1, 2 and 8, the stator assembly further includes an inner limiting ring 3, where the inner limiting ring 3 is inserted in the inner hole of the iron core and is disposed at intervals with the plurality of winding coils 401 to form an annular inner cavity, and the second end of each power strip 1 is connected with the inner limiting ring 3.

Specifically, a plurality of inner limiting ring bolt holes 302 are formed in two end faces of the inner limiting ring 3, and two opposite sides of the inner limiting ring 3 are connected with support sealing plates on two opposite sides of the stator assembly through a plurality of bolts inserted into the inner limiting ring bolt holes 302.

As shown in fig. 3 to 6, the plurality of power strip 1 includes: the double-opening power strip 11 is provided with a first communication hole 105, a second communication hole 105 and a third communication hole 105 at intervals on the plate body 100 of the double-opening power strip 11, the first communication hole 105 is communicated with the annular outer cavity, the second communication hole 105 is communicated with the corresponding interval, and the third communication hole 105 is communicated with the annular inner cavity; wherein, the first communication hole 105 and the second communication hole 105 and the third communication hole 105 are communicated through the cooling liquid flow hole 101 provided on the plate body 100; and/or the full-baffle power strip 12, wherein the plate body 100 of the full-baffle power strip 12 is of a full-closed plate structure; and/or the outer baffle insert row 13, wherein a second communication hole 105 and a third communication hole 105 are arranged on the plate body 100 of the outer baffle insert row 13 at intervals, the second communication hole 105 is communicated with the corresponding interval, and the third communication hole 105 is communicated with the annular inner cavity; wherein the second communication hole 105 and the third communication hole 105 communicate with each other through the coolant flow holes 101 provided in the plate body 100; and/or the inner baffle insert row 14, wherein the plate body 100 of the inner baffle insert row 14 is provided with a first communication hole 105 and a second communication hole 105 at intervals, the first communication hole 105 is communicated with the annular outer cavity, and the second communication hole 105 is communicated with the corresponding interval; wherein the first communication hole 105 and the second communication hole 105 communicate with each other through a coolant flow hole 101 provided in the plate body 100.

Wherein, a transition rod 104 is formed between the first communication hole 105 and the second communication hole 105 and between the second communication hole 105 and the third communication hole 105, and a plurality of cooling liquid flow holes 101 are provided on the transition rod 104.

As shown in fig. 3, a plate body 100 of the double-opening power strip 11 is provided with a first communication hole 105, a second communication hole 105 and a third communication hole 105 at intervals, wherein the first communication hole 105 is communicated with an annular outer cavity, the second communication hole 105 is communicated with a corresponding interval, and the third communication hole 105 is communicated with an annular inner cavity; wherein, the first communication hole 105 and the second communication hole 105 and the third communication hole 105 are communicated through the cooling liquid flow hole 101 provided in the plate body 100.

As shown in fig. 4, the plate body 100 of the full-baffle power strip 12 is a full-closed flat plate structure.

As shown in fig. 5, the outer baffle insert row 13 is provided with a second communication hole 105 and a third communication hole 105 at intervals on the plate body 100 of the outer baffle insert row 13, the second communication hole 105 is communicated with the corresponding interval, and the third communication hole 105 is communicated with the annular inner cavity; wherein the second communication hole 105 and the third communication hole 105 communicate with each other through the coolant flow holes 101 provided in the plate body 100.

As shown in fig. 6, the inner baffle insert row 14 has a plate body 100 of the inner baffle insert row 14 provided with a first communication hole 105 and a second communication hole 105 at intervals, the first communication hole 105 communicates with the annular outer cavity, and the second communication hole 105 communicates with the corresponding interval; wherein the first communication hole 105 and the second communication hole 105 communicate with each other through a coolant flow hole 101 provided in the plate body 100.

As shown in fig. 2 and 7, the outer limit ring 2 is provided with a coolant inlet 201 and a coolant outlet 202 for the ingress and egress of coolant, the coolant inlet 201 and the coolant outlet 202 being respectively provided corresponding to two adjacent winding coils 401 among the plurality of winding coils 401, and the full barrier strip 12 being interposed at a space between the respective two winding coils 401.

The plurality of power strip 1 of the present application is divided into a plurality of power strip groups sequentially arranged along a predetermined direction around a center line of the stator core 403, each power strip group including three power strips 1, the plurality of power strip groups including: the first power strip group comprises a full baffle power strip 12 and two double-opening power strips 11 which are sequentially arranged along a preset direction around the central line of the stator core 403; the second power strip group comprises an outer baffle power strip 13 and two double-opening power strips 11 which are sequentially arranged along a preset direction surrounding the central line of the stator core 403; the third power strip group, the second power strip group includes one inner baffle power strip 14 and two double-opening power strips 11 sequentially arranged along a predetermined direction around the center line of the stator core 403; the power strip group adjacent to the first power strip group is a second power strip group or a third power strip group, the power strip group adjacent to the second power strip group is a first power strip group or a third power strip group, and the power strip group adjacent to the third power strip group is a first power strip group or a second power strip group.

In the embodiment shown in fig. 1 and 2 of the present application, the stator assembly of the present application includes sixteen rows of inserts 1, each of which is a full barrier row 12, two double-open rows 11, an outer barrier row 13, two double-open rows 11, an inner barrier row 14, two double-open rows 11, an outer barrier row 13, two double-open rows 11 and an inner barrier row 14, two double-open rows 11, an outer barrier row 13 and two double-open rows 11 sequentially arranged along a predetermined direction surrounding a center line of a stator core 403, so as to ensure uniformity of gaps between winding coils of an axial flux motor, improve a circulation effect of a cooling liquid, and improve overall thermal performance of the axial flux motor.

As shown in fig. 7, the outer limiting ring 2 is provided with a plurality of avoidance portions for the first ends of the plurality of power strip 1 to be inserted in a one-to-one correspondence manner, each power strip 1 includes a sealing handle 102 disposed at the first end of the board body 100, each avoidance portion includes an outer limiting hole 203 and an outer inserting hole 204 which are sequentially communicated along a direction close to the inner hole of the iron core, the outer limiting hole 203 is in plug-in fit with the sealing handle 102, and the outer inserting hole 204 is in plug-in fit with the board body 100.

Specifically, the cross section of the sealing handle 102 is an oblong cross section, and the outer limiting hole 203 is an oblong hole; the cross section of the plate body 100 is a rectangular cross section, and the outer insertion hole 204 is a rectangular hole; wherein the cross-section of the sealing handle 102 is larger than the cross-section of the plate body 100.

As shown in fig. 8, the inner limiting ring 3 is provided with a plurality of inner mounting grooves 301 for inserting the second ends of the plurality of power strip 1 in a one-to-one correspondence manner, each power strip 1 includes a rounded connecting rod 103 disposed at the second end of the board body 100, and each inner mounting groove 301 is in plug-in fit with the corresponding rounded connecting rod 103.

In this way, the rounded connecting rod 103 of each strip 1 disposed at the second end of the board body 100 can conveniently pass the strip 1 through the gap between the corresponding two winding coils 401 without damaging the wire bundles of the two winding coils 401.

The application also provides a motor, which comprises the stator assembly.

The motor is an axial flux motor, each winding coil 401 of the axial flux motor is formed by flat wire winding, when each winding coil 401 is fixed on a stator core 403, the outer limiting ring 2 is sleeved on the outer side of a stator 4 on the premise of ensuring that the central line of the outer limiting ring 2 is collinear with the central line of the stator core 403, the inner limiting ring 3 is arranged in an inner hole of the core on the premise of ensuring that the central line of the inner limiting ring 3 is collinear with the central line of the stator core 403, each socket 1 is arranged, and finally a stator assembly is arranged in a shell of the motor.

The installation process of the plurality of power strip 1 is as follows:

taking the full-baffle power strip 12 as an example, other mounting modes of the power strip 1 are similar to those of the full-baffle power strip, when the round corner connecting rod 103 of the full-baffle power strip 12 passes through the outer limiting hole 203, the outer inserting hole 204 and the interval between the two corresponding winding coils 401 between the cooling liquid inlet 201 and the cooling liquid outlet 202 of the outer limiting ring 2 and is abutted in the inner mounting groove 301 of the inner limiting ring 3, the sealing handle 102 of the full-baffle power strip 12 and the corresponding outer limiting hole 203 of the outer limiting ring 2 are matched with each other, the sealing handle 102 is adhered to the outer limiting ring 2 through sealing glue, and after the sealing glue is solidified, surface treatment is performed to remove redundant residual glue.

As shown in fig. 2, the plurality of power strip 1 of the stator assembly of the present application is arranged in the following manner: after the full baffle strip 12 is installed, two double-opening strips 11 are installed at two intervals along the anticlockwise direction respectively, one outer baffle strip 13 is installed at one interval along the anticlockwise direction respectively, two double-opening strips 11 are installed at two intervals along the anticlockwise direction respectively, one inner baffle strip 14 is installed at one interval along the anticlockwise direction respectively, two double-opening strips 11 are installed at one interval along the anticlockwise direction respectively, one outer baffle strip 13 is installed at one interval along the anticlockwise direction respectively, two double-opening strips 11 are installed at two intervals along the anticlockwise direction respectively, and sixteen strips 1 of the axial magnetic flux motor are installed.

Therefore, the application divides the spare part in the stator assembly into six cavities by arranging the six power strip groups, thereby realizing the purpose of adjustable flow direction of the cooling liquid in the stator assembly, and the specific flow direction of the cooling liquid in the six cavities is as follows:

firstly, cooling liquid enters the part of the annular outer cavity belonging to the outer ring of the first cavity from the cooling liquid inlet 201 on the outer limiting ring 2, flows in the outer ring of the first cavity through the first communication holes 1051 on the two double-opening power strip 11 in the first power strip group, and contacts with the outer baffle part of the outer baffle power strip 13 in the outer ring of the first cavity to form local vortex so as to prevent the cooling liquid in the outer ring of the first cavity from directly flowing into the outer ring of the second cavity, so that the cooling liquid needs to enter the part of the annular inner cavity belonging to the inner ring of the first cavity through the cooling liquid flow holes 101 and the second communication holes 1052 on the two double-opening power strip 11 in the first power strip group;

then, the cooling liquid flows into the inner ring of the second cavity from the inner ring of the first cavity through the third communication holes 1053 of the outer baffle insert 13 between the first cavity and the second cavity based on the pressure effect, flows in the inner ring of the second cavity through the third communication holes 1053 on the two double-opening insert 11 in the second insert row group, and contacts with the inner baffle part of the inner baffle insert 14 in the inner ring of the second cavity to form local vortex so as to prevent the cooling liquid in the inner ring of the second cavity from directly flowing into the inner ring of the third cavity, so that the cooling liquid needs to enter the part of the annular outer cavity belonging to the outer ring of the second cavity through the cooling liquid flow holes 101 and the second communication holes 1052 on the two double-opening insert 11 in the second insert row group;

then, the cooling liquid continuously flows into the outer ring of the third cavity from the outer ring of the second cavity through the first communication holes 1051 of the inner baffle strip 14 at the boundary of the second cavity and the third cavity based on the pressure effect, flows in the outer ring of the third cavity through the first communication holes 1051 on the two double-opening strips 11 in the third strip group, contacts with the outer baffle plate part of the outer baffle plate strip 13 in the third cavity to form local vortex, and prevents the cooling liquid in the outer ring of the third cavity from directly flowing into the outer ring of the fourth cavity, so that the cooling liquid needs to enter the part of the inner ring of the third cavity through the cooling liquid communication holes 101 and the second communication holes 1052 on the two double-opening strips 11 in the third strip group;

then, the coolant flows into the inner ring of the fourth cavity from the inner ring of the third cavity through the third communication holes 1053 of the outer baffle strip 13 between the third cavity and the fourth cavity based on the pressure effect, flows in the inner ring of the fourth cavity through the third communication holes 1053 on the two double-open rows of inserts 11 in the fourth row of inserts, and contacts with the inner baffle portions of the inner baffle strip 14 in the third cavity to form local vortex so as to prevent the coolant in the inner ring of the fourth cavity from directly flowing into the inner ring of the sixth cavity, so that the coolant needs to enter the portion of the annular outer cavity belonging to the outer ring of the fourth cavity through the coolant flow through holes 101 and the second communication holes 1052 on the two double-open rows of inserts 11 in the third row of inserts;

then, the cooling liquid continues to flow into the outer ring of the fifth cavity from the outer ring of the fourth cavity through the first communication holes 1051 of the inner baffle strip 14 at the boundary of the fourth cavity and the fifth cavity based on the pressure effect, flows in the outer ring of the fifth cavity through the first communication holes 1051 on the two double-opening strips 11 in the fifth strip group, contacts with the outer baffle part of the outer baffle strip 13 in the fifth cavity to form local vortex, and prevents the cooling liquid in the outer ring of the fifth cavity from directly flowing into the outer ring of the sixth cavity, so that the cooling liquid needs to enter the part of the inner ring of the fifth cavity through the cooling liquid communication holes 101 and the second communication holes 1052 on the two double-opening strips 11 in the fifth strip group;

finally, the cooling liquid continues to flow into the inner ring of the sixth cavity from the inner ring of the fifth cavity through the third communication holes 1053 of the outer baffle insert row 13 at the boundary between the fifth cavity and the sixth cavity based on the pressure effect, flows in the inner ring of the sixth cavity through the third communication holes 1053 on the two double-opening insert rows 11 in the sixth insert row, and contacts with the outer baffle part of the full baffle insert row 12 at the sixth cavity to form local vortex so as to prevent the cooling liquid in the outer ring of the sixth cavity from flowing into the outer ring of the first cavity, so that the cooling liquid needs to enter the part of the annular inner cavity belonging to the outer ring of the sixth cavity through the cooling liquid through holes 101 and the second communication holes 1052 on the two double-opening insert rows 11 in the sixth insert row, and flows out of the stator assembly from the cooling liquid outlet 202 on the outer limiting ring 2 so as to take away the heat of the stator assembly, thereby completing cooling of the stator assembly.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

the stator assembly of the present application includes: the stator 4, the stator 4 includes stator core 403 and a plurality of winding coils 401, the stator core 403 includes a plurality of teeth 402 which are set up around the centre line of the stator core at intervals, in order to enclose the core inner hole, a plurality of winding coils 401 are sleeved on a plurality of teeth 402 in one-to-one correspondence, and the interval is formed between any two adjacent winding coils 401; the plurality of power strip 1, the plurality of power strip 1 and the plurality of intervals that the plurality of winding coils 401 formed set up in a one-to-one correspondence, and each of the plurality of power strip 1 includes the plate body 100 of at least partly inserting in corresponding interval department, is provided with the coolant flow channel that is used for communicating the outside space of stator 4 with the iron core hole on the plate body 100 of at least one power strip 1. In this way, the stator assembly of the present application solves the technical problems that when the flat wire is used as the winding coil of the axial flux motor, after the winding coil of the axial flux motor integrally enters the casing, the gap between two adjacent winding coils of the motor stator may be uneven, so that the cooling liquid is difficult to pass through the gap, and finally the motor stator is heated unevenly, and the cooling effect is poor, by arranging the plurality of power strip 1 at a plurality of intervals formed by the plurality of winding coils 401.

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 is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A stator assembly, comprising:

the stator (4), the stator (4) comprises a stator core (403) and a plurality of winding coils (401), the stator core (403) comprises a plurality of tooth parts (402) which are arranged around the central line of the stator core at intervals so as to enclose an iron core inner hole, the winding coils (401) are sleeved on the tooth parts (402) in a one-to-one correspondence manner, and an interval is formed between any two adjacent winding coils (401);

the plurality of row of inserting (1), a plurality of row of inserting (1) with a plurality of that a plurality of winding coil (401) formed a plurality of interval one-to-one sets up, each a plurality of row of inserting (1) all include at least part insert establish corresponding interval department plate body (100), at least one row of inserting (1) be provided with on plate body (100) be used for with the outside space of stator (4) with the coolant flow channel of iron core hole intercommunication.

2. The stator assembly according to claim 1, characterized in that the stator assembly comprises an outer limit ring (2), the outer limit ring (2) is sleeved outside the stator (4) and is arranged at intervals with the plurality of winding coils (401) to form an annular outer cavity, and the first end of each power strip (1) is connected with the outer limit ring (2).

3. The stator assembly according to claim 2, further comprising an inner stop collar (3), the inner stop collar (3) being inserted in the core bore and being spaced apart from the plurality of winding coils (401) to form an annular cavity, the second end of each of the power strip (1) being connected to the inner stop collar (3).

4. A stator assembly according to claim 3, wherein the plurality of power strips (1) comprises:

the double-opening power strip (11) is characterized in that a first communication hole (105), a second communication hole (105) and a third communication hole (105) are formed in the plate body (100) of the double-opening power strip (11) at intervals, the first communication hole (105) is communicated with the annular outer cavity, the second communication hole (105) is communicated with the corresponding interval, and the third communication hole (105) is communicated with the annular inner cavity; wherein, the first communication hole (105) and the second communication hole (105) and the third communication hole (105) are communicated through a cooling liquid flow hole (101) arranged on the plate body (100); and/or

The full-baffle power strip (12) is characterized in that the plate body (100) of the full-baffle power strip (12) is of a full-closed plate structure; and/or

The outer baffle power strip (13) is characterized in that a second communication hole (105) and a third communication hole (105) are formed in the plate body (100) of the outer baffle power strip (13) at intervals, the second communication hole (105) is communicated with the corresponding interval, and the third communication hole (105) is communicated with the annular inner cavity; wherein the second communication hole (105) and the third communication hole (105) are communicated with each other through a coolant flow hole (101) provided in the plate body (100); and/or

The inner baffle power strip (14) is characterized in that a first communication hole (105) and a second communication hole (105) are formed in the plate body (100) of the inner baffle power strip (14) at intervals, the first communication hole (105) is communicated with the annular outer cavity, and the second communication hole (105) is communicated with the corresponding interval; wherein the first communication hole (105) and the second communication hole (105) are communicated with each other through a coolant flow hole (101) provided in the plate body (100).

5. The stator assembly according to claim 4, characterized in that a cooling liquid inlet (201) and a cooling liquid outlet (202) for cooling liquid to enter and exit are arranged on the outer limiting ring (2), the cooling liquid inlet (201) and the cooling liquid outlet (202) are respectively arranged corresponding to two adjacent winding coils (401) in the plurality of winding coils (401), and the full-baffle power strip (12) is inserted at the interval between the two corresponding winding coils (401).

6. The stator assembly according to claim 4, wherein a plurality of the power strip (1) is divided into a plurality of power strip groups sequentially arranged in a predetermined direction around a center line of the stator core (403), each of the power strip groups including three of the power strips (1), the plurality of power strip groups including:

the first power strip comprises a full-baffle power strip (12) and two double-opening power strips (11) which are sequentially arranged along a preset direction surrounding the central line of the stator core (403);

the second power strip group comprises an outer baffle power strip (13) and two double-opening power strips (11) which are sequentially arranged along a preset direction surrounding the central line of the stator core (403);

the third power strip group comprises an inner baffle power strip (14) and two double-opening power strips (11) which are sequentially arranged along a preset direction surrounding the central line of the stator core (403);

the power strip comprises a first power strip group, a second power strip group, a third power strip group, a fourth power strip group, a fifth power strip group, a sixth power strip group, a seventh power strip group and a seventh power strip group, wherein the power strip group adjacent to the first power strip group is the second power strip group or the third power strip group, the power strip group adjacent to the second power strip group is the first power strip group or the second power strip group, and the power strip group adjacent to the third power strip group is the first power strip group or the second power strip group.

7. The stator assembly according to claim 2, wherein the outer limiting ring (2) is provided with a plurality of avoidance portions for the first ends of the plurality of power strip (1) to be inserted in a one-to-one correspondence manner, each power strip (1) comprises a sealing handle (102) arranged at the first end of the plate body (100), each avoidance portion comprises an outer limiting hole (203) and an outer inserting hole (204) which are sequentially communicated along a direction close to the inner hole of the iron core, the outer limiting holes (203) are in plug-in fit with the sealing handles (102), and the outer inserting holes (204) are in plug-in fit with the plate body (100).

8. The stator assembly of claim 7 wherein the stator assembly is formed from a plurality of stator segments,

the cross section of the sealing handle (102) is an oblong cross section, and the outer limiting hole (203) is an oblong hole;

the cross section of the plate body (100) is a rectangular cross section, and the outer insertion hole (204) is a rectangular hole;

wherein the cross section of the sealing handle (102) is larger than the cross section of the plate body (100).

9. A stator assembly according to claim 3, wherein the inner limiting ring (3) is provided with a plurality of inner mounting grooves (301) for inserting the second ends of the plurality of power strip (1) in a one-to-one correspondence manner, each power strip (1) comprises a round corner connecting rod (103) arranged at the second end of the plate body (100), and each inner mounting groove (301) is in plug-in fit with the corresponding round corner connecting rod (103).

10. An electric machine comprising a stator assembly as claimed in any one of claims 1 to 9.