CN220273399U - Stator and motor - Google Patents

Abstract

The application discloses stator and motor, this stator includes: the stator teeth group comprises a plurality of stator teeth, and stator grooves are formed in the stator teeth; the plurality of coupling coils are arranged in one-to-one correspondence with the plurality of stator tooth groups, wound on the plurality of stator teeth in the corresponding stator tooth groups and completely positioned in the corresponding stator slots. In this way, the volume of the stator and the motor can be reduced, and heating is reduced.

Description

Stator and motor

Technical Field

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

Background

The stator is one of the important components of the motor, and comprises a stator core and stator windings, i.e. coils. During preparation, split stator teeth are sequentially surrounded to form an annular stator core, insulators are assembled on the upper part and the lower part of the annular core, the electric conductivity of the inner ring and the outer ring of the core is isolated through the insulators, the annular stator core is integrally formed, and finally, a stator winding is formed by winding on the annular stator core.

In the related art, aiming at a stator core formed by split assembly of a plurality of stator teeth, the bridge wire between the stator teeth is longer, and the joint wires are more, so that the motor is larger in volume, larger in end height and serious in heating.

Disclosure of Invention

The application provides a stator and motor to reduce the volume of stator and motor, reduce and generate heat.

In order to solve the technical problems, the application provides a stator. The stator includes: the stator teeth group comprises a plurality of stator teeth, and stator grooves are formed in the stator teeth; a plurality of coupling coils which are arranged in one-to-one correspondence with the plurality of stator tooth groups, are wound on the plurality of stator teeth in the corresponding stator tooth groups and are completely positioned in the corresponding stator slots

The bus length of the coupling coil is equal to the product of the number of turns of the coupling coil on a plurality of stator teeth in the corresponding stator tooth group and the length of a single-turn coupling coil, and the length of the single-turn coupling coil is twice the sum of the stacking height and the tooth width of stator slots of the stator teeth.

Wherein, the stator still includes multiunit joint line, sets up with a plurality of coupling coils one-to-one, and the joint line includes: the power supply joint wire is connected with one end of the corresponding coupling coil; and the middle joint wire is connected with the other end of the corresponding coupling coil.

The plurality of stator tooth sets comprise three groups of stator tooth sets, the plurality of coupling coils comprise three coupling coils, power connector wires connected with each coupling coil are arranged outside stator grooves to form a three-phase power connector of the motor, middle connector wires of the plurality of stator tooth sets are connected, and the power connector wires of each stator tooth set are arranged on the same side as the middle connector wires.

One end of the coupling coil corresponding to one of the two adjacent spliced stator tooth groups is connected with one end of the coupling coil corresponding to the other stator tooth group.

Wherein the stator further comprises: the power supply joint wire is connected with the other end of the coupling coil corresponding to the power supply joint wire; and the middle joint line is connected with the other end of the coupling coil corresponding to the other middle joint line.

The stator tooth groups are spliced end to end in sequence to form an annular stator; the winding direction of the coupling coil on the stator tooth is opposite to the winding direction of the coupling coil on the adjacent stator tooth; the winding mode of the coupling coil of each stator tooth group is consistent.

Wherein, power connection line and intermediate head line and the integrative setting of corresponding coupling coil.

In order to solve the technical problem, the application provides a motor. The motor includes: the stator; the stator is arranged in the shell; the rotor is arranged in the shell, is coupled with the stator and rotates when the coupling coil is electrified; the rotating shaft is arranged in the shell and fixedly connected with the rotor, one end of the rotating shaft extends out of the shell, and the rotating shaft rotates along with the rotation of the rotor so as to output driving force.

Unlike the prior art: the stator comprises a plurality of stator tooth groups and a plurality of coupling coils, wherein each stator tooth group comprises a plurality of stator teeth, and stator grooves are formed in the stator teeth; the plurality of coupling coils are arranged in one-to-one correspondence with the plurality of stator tooth groups, are wound on the plurality of stator teeth in the corresponding stator tooth groups and are completely positioned in the corresponding stator slots. In this way, the plurality of stator teeth in each stator tooth group share the same coupling coil, and the bridge wire between the stator teeth in each stator tooth group is completely positioned in the corresponding stator slot to be used as a part of the coupling coil of the stator teeth, so that the coupling coil is completely used for the stator teeth, i.e. no redundant bridge wire exists between the adjacent stator teeth, thereby being capable of reducing the height of the end part of the motor and reducing the heat generation; and only the head and tail stator teeth in each stator tooth group are provided with joint wires, so that the joint wires of stator windings can be reduced, the structures such as a circuit board or a busbar are not required to be added, and the size of the motor can be reduced.

Drawings

For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic structural view of an embodiment of a stator of the present application;

FIG. 2 is a schematic illustration of the stator of the embodiment of FIG. 1 in a disassembled configuration;

FIG. 3 is a schematic view of the stator teeth set and coupling coil configuration of the stator of the embodiment of FIG. 1;

FIG. 4 is a schematic view of the stator teeth set, coupling coil and connector wire of the stator of FIG. 1;

FIG. 5 is a schematic diagram of an embodiment of a motor of the present application;

fig. 6 is a schematic diagram of the motor of the embodiment of fig. 5 in a disassembled configuration.

Detailed Description

The present application is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustration of the present application, but do not limit the scope of the present application. Likewise, the following embodiments are only some, but not all, of the embodiments of the present application, and all other embodiments obtained by one of ordinary skill in the art without inventive effort are within the scope of the present application.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.

In the examples herein, a first feature "on" or "under" a second feature may be either the first and second features in direct contact, or the first and second features in indirect contact via an intermediary, unless expressly stated and defined otherwise. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The present application first proposes a stator, as shown in fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of the stator of the present application, and fig. 2 is a schematic exploded structural diagram of the stator of the embodiment of fig. 1. The stator 10 of the present embodiment includes a plurality of stator teeth groups 11 and a plurality of coupling coils 12, each stator teeth group 11 includes a plurality of stator teeth 111, and the stator teeth 111 are provided with stator slots (not shown); the plurality of coupling coils 12 are arranged in one-to-one correspondence with the plurality of stator tooth sets 11, and the coupling coils 12 are wound on the plurality of stator teeth 111 in the corresponding stator tooth sets 11 and are completely positioned in the corresponding stator slots.

The plurality of stator teeth 111 in each stator tooth set 11 share the same coupling coil 12, and the bridge wire between the stator teeth 111 in each stator tooth set 11 is completely located in the corresponding stator slot to be used as a part of the coupling coil 12 of the stator teeth 111, and is completely used for stator tooth coupling, i.e. no redundant bridge wire exists between adjacent stator teeth 111, so that the height of the end part of the motor can be reduced, and the heat is reduced; and only the head and tail stator teeth 111 in each stator tooth group 11 are provided with joint wires, so that the joint wires of the stator winding 11 can be reduced, the structures such as a circuit board and a bus bar are not required to be added, and the volumes of the stator 10 and the motor can be reduced.

Adjacent stator teeth 111 refer to adjacent spliced stator teeth 111 in the same stator tooth set 11; because the plurality of stator teeth 111 in the same stator tooth group 11 adopt the same tool and utilize the same coupling coil 12 to finish coil winding, no redundant bridge wire exists between adjacent spliced stator teeth 111 in the same stator tooth group 11, and the coupling coils 12 between adjacent spliced stator teeth 111 are all in stator slots so as to be coupled with the stator teeth 111.

Specifically, the stator 10 of the present embodiment includes 3 stator tooth groups 11, and the 3 stator tooth groups 11 are sequentially spliced to form an annular stator 10. Wherein each stator tooth set 11 of the present embodiment comprises 3 stator teeth 111.

The number of the stator teeth 111 in each stator tooth set 11 is the same, so that the same fixture mechanism and the same winding process (not shown) are convenient for winding a plurality of stator tooth sets 11.

Of course, in other embodiments, the number of stator tooth sets and/or the number of stator teeth within a stator tooth set, etc. may be adjusted according to the power requirements, volume requirements, etc. of the motor.

Optionally, the bus length of the coupling coil 12 in this embodiment is equal to the product between the number of turns of the coupling coil 12 on the plurality of stator teeth 111 in the corresponding stator tooth group 11 and the length of the single-turn coupling coil 12, and the length of the single-turn coupling coil 12 is twice the sum of the stack height and the tooth width of the stator slots of the stator teeth 111.

The stack height of the stator slots is the length of the slot opening that designates the sub-teeth 111 for accommodating the coupling coil 12; the stator slot includes two notches disposed on opposite sides of the stator tooth 111, and the tooth width of the stator slot is the distance between the two notches.

The bus length of the coupling coil 12 in this embodiment is equal to the product between the number of turns of the coupling coil 12 on the plurality of stator teeth 111 in the corresponding stator tooth set 11 and the length of the single-turn coupling coil 12, so that the coupling coil 12 can be completely located in the stator slot, each turn of the coupling coil 12 can be ensured to be arranged along the winding direction of the coil, the problems of redundancy, folding and bending and the like are avoided, and no redundant bridge wire between adjacent stator teeth 111 can be realized.

Optionally, referring to fig. 1 to 3 together, fig. 3 is a schematic structural diagram of a stator tooth set and a coupling coil in the stator of the embodiment of fig. 1; fig. 4 is a schematic structural diagram of a stator tooth set, coupling coils and a plurality of connector wires in the stator of fig. 1, the stator 10 of this embodiment further includes a plurality of groups of connector wires (not labeled in the drawing) that are disposed in one-to-one correspondence with the plurality of coupling coils 12, fig. 3 shows only one stator tooth set 11 and one coupling coil 12, and fig. 4 shows only one stator tooth set 11, one coupling coil 12 and one group of connector wires. Wherein, the joint line includes: the power connector wire 131 and the intermediate connector wire 132, the power connector wire 131 is connected with one end of the corresponding coupling coil 12, and the intermediate connector wire 132 is connected with the other end of the corresponding coupling coil 12, that is, the power connector wire 131 and the intermediate connector wire 132 are respectively connected with two ends of the coupling coil 12 to respectively lead out the two ends of the coupling coil 12.

Optionally, the plurality of stator teeth sets 11 of the present embodiment includes three stator teeth sets 11, the plurality of coupling coils 12 includes three coupling coils 12, and the power connector line 131 connected with each coupling coil 12 is disposed outside the stator slot to form a three-phase power connector of the motor, the middle connector line 132 of the plurality of stator teeth sets 11 is connected, and the power connector line 131 of each stator teeth set 11 is disposed on the same side as the middle connector line 132, that is, on the same end of the stator 10.

In an embodiment, the power connection wires 131 of each stator tooth set 11 are located on the left side of the end portion and the middle connection wires 132 are located on the right side of the end portion, or the power connection wires 131 of each stator tooth set 11 are located on the right side of the end portion and the middle connection wires 132 are located on the left side of the end portion, so that the rotor 30 of the motor can rotate.

Specifically, the plurality of stator teeth 11 are spliced to form the annular stator 10, the stator 10 has two ends that are disposed opposite to each other and axially arranged along the stator, and the arrangement of the power connector wires 131 of the plurality of stator teeth 11 on the same side means that the power connector wires 131 of the plurality of stator teeth 11 are disposed on the same end of the stator 10, so that the plurality of power connector wires 131 are connected with an external power supply mechanism.

The arrangement of the intermediate joint lines 132 of the plurality of stator tooth sets 11 on the same side means that the intermediate joint lines 132 of the plurality of stator tooth sets 11 are arranged on the same end of the stator 10, facilitating the connection between the plurality of intermediate joint lines 132.

The plurality of stator teeth sets 11 of the present embodiment include three sets of stator teeth sets 11, the plurality of coupling coils 12 include three coupling coils 12 to realize a stator 10 of a three-phase winding, and further realize a three-phase motor, three power connector wires 131 of the three sets of stator teeth sets 11 serve as three-phase power connectors of the motor, and three middle connector wires 132 of the three sets of stator teeth sets 11 are connected together.

In another embodiment, one end of the coupling coil corresponding to one of the two adjacent stator tooth sets is connected with one end of the coupling coil corresponding to the other stator tooth set. The present embodiment can realize a large stator tooth group of a preset number of stator teeth, which is composed of two or more stator tooth groups, by connecting the coupling coils corresponding to the two or more stator tooth groups.

The stator of the present embodiment further includes: the power supply connector wire is connected with the other end of the corresponding coupling coil; the middle joint line is connected with the other end of the coupling coil corresponding to the other one.

For example, six stator tooth groups can be realized through six times of tooling of winding equipment, each stator tooth group comprises three stator teeth, in order to realize three-phase stators of six stator teeth of each phase, six stator tooth groups can be divided into three large stator tooth groups, each large stator tooth group is adjacently arranged, and coils corresponding to two stator tooth groups in each large stator tooth group are connected. The stator also comprises three power supply joint wires and three middle joint wires, wherein the three power supply joint wires are respectively connected with the unconnected end of one coupling coil in the three large stator tooth groups, and the three middle joint wires are respectively connected with the connected end of the other coupling coil in the three large stator tooth groups; and the three middle joint wires are connected together, and the three power joint wires are used as three-phase power joints of the motor.

Optionally, the plurality of stator tooth groups 11 in this embodiment are sequentially spliced end to form an annular stator; the winding direction of the coupling coil 12 on the stator tooth 111 is opposite to the winding direction of the coupling coil 12 on the adjacent stator tooth 111; the winding mode of the coupling coil 12 of each stator tooth group 11 is consistent, so that the winding of a plurality of stator tooth groups 11 is realized by adopting the same winding equipment and winding technology, the consistency of each phase winding of the whole stator 10 is realized, and the normal operation of the motor is ensured.

Alternatively, the power supply tab line 131 and the intermediate tab line 132 are integrally provided with the corresponding coupling coil 12. In this embodiment, the power supply tab wire 131 and the intermediate tab wire 132 are integrally provided with the corresponding coupling coil 12, so that the number of connection points of the wire harness can be reduced, and the reliability can be improved.

Optionally, the coupling coil 12 of the present embodiment includes a plurality of sub-coupling coils, and the plurality of sub-coupling coils are adjacently disposed in each turn in the stator slot.

Because the sum of the cross sections of the plurality of finer coils can be more uniformly distributed in the stator slots of the stator teeth 111 than a thicker coil of the same cross section, less space is left in the stator slots, less heat is generated, and the efficiency of the motor can be improved. Therefore, the present embodiment realizes the coupling coil 12 through a plurality of sub-coupling coils, that is, a plurality of sub-coupling coils are wound in the same stator slot, so that the uniformity of distribution of sub-coupling coils in the stator slot can be improved, and the heat is reduced.

Optionally, the stator 10 of this embodiment further includes a plurality of first splicing elements 141 and a plurality of second splicing elements 142, where the first splicing elements 141 and the second splicing elements 142 are respectively provided with splicing grooves, the first splicing elements 141 and the second splicing elements 142 are respectively disposed at two ends of the stator teeth 111, two ends of the stator teeth 111 are respectively embedded in the splicing grooves of the first splicing elements 141 and the splicing grooves of the second splicing elements 142, the plurality of first splicing elements 141 are sequentially spliced into a first splicing ring, and the plurality of second splicing elements 142 are sequentially spliced into a second splicing ring. In this embodiment, the first splicing ring and the second splicing ring are used to splice two ends of the plurality of stator teeth 111, so as to complete the splicing and assembling of the stator 10.

The present application further proposes a motor, as shown in fig. 4 and 5, fig. 4 is a schematic structural diagram of an embodiment of the motor of the present application, and fig. 5 is a schematic exploded structural diagram of the motor of the embodiment of fig. 4. The motor (the drawing is labeled) of the present embodiment includes: stator 10, housing 20, rotor 30 and shaft 40; wherein the stator 10 is disposed within the housing 10; the rotor 20 is arranged in the shell 20, is coupled with the stator 10, and rotates when the coupling coil 12 is electrified; the rotating shaft 40 is disposed in the housing 20 and fixedly connected with the rotor 30, one end of the rotating shaft 40 extends out of the housing 20, and the rotating shaft 40 rotates along with the rotation of the rotor 30 to output driving force.

The stator 10 is sleeved outside the rotor 30.

The specific structure and principle of the stator 10 can be referred to the above embodiments, and are not repeated here.

The motor of the present embodiment further includes an end cover 50, which is disposed at the opening of the housing 20 to seal the stator 10 and the rotor 30 in the housing 20; one end of the rotary shaft 40 extends out of the end cap 50 to serve as an output shaft of the motor.

The motor of the present embodiment further includes a magnetic steel 60 disposed at an end of the stator 10 to increase magnetic coupling of the stator 10.

The motor of this embodiment further includes a securing assembly 70 for rotatably coupling the shaft 40 to the end cap 50.

Different from the prior art, the stator comprises a plurality of stator tooth groups and a plurality of coupling coils, each stator tooth group comprises a plurality of stator teeth, and the stator teeth are provided with stator grooves; the plurality of coupling coils are arranged in one-to-one correspondence with the plurality of stator tooth groups, are wound on the plurality of stator teeth in the corresponding stator tooth groups and are completely positioned in the corresponding stator slots. In this way, the plurality of stator teeth in each stator tooth group share the same coupling coil, and the bridge wire between the stator teeth in each stator tooth group is completely positioned in the corresponding stator slot to be used as a part of the coupling coil of the stator teeth, so that the coupling coil is completely used for the stator teeth, i.e. no redundant bridge wire exists between the adjacent stator teeth, thereby being capable of reducing the height of the end part of the motor and reducing the heat generation; and only the head and tail stator teeth in each stator tooth group are provided with joint wires, so that the joint wires of stator windings can be reduced, the structures such as a circuit board or a busbar are not required to be added, and the size of the motor can be reduced.

Further, the stator slot of the stator has no redundant wire harness between slots, copper wire materials are saved, and the gap bridge wire is stored in the stator slot, so that the axial length of the motor is reduced, the heat is generated, and the motor efficiency and the power density can be improved.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims (10)

1. A stator, comprising:

the stator teeth group comprises a plurality of stator teeth, and stator grooves are formed in the stator teeth;

the plurality of coupling coils are arranged in one-to-one correspondence with the plurality of stator tooth groups, are wound on the plurality of stator teeth in the corresponding stator tooth groups, and are completely positioned in the corresponding stator slots.

2. The stator of claim 1, wherein the bus length of the coupling coils is equal to a product of a number of turns of the coupling coils on a plurality of stator teeth in the corresponding stator tooth set and a length of a single turn of the coupling coils, the length of the single turn of the coupling coils being twice a sum of a stack height and a tooth width of stator slots of the stator teeth.

3. The stator according to claim 2, further comprising a plurality of sets of tab wires provided in one-to-one correspondence with the plurality of coupling coils, the tab wires comprising:

the power supply joint wire is connected with one end of the corresponding coupling coil;

and the middle joint line is connected with the other end of the corresponding coupling coil.

4. A stator according to claim 3, wherein the plurality of stator tooth sets comprises three sets of the stator tooth sets, the plurality of coupling coils comprises three of the coupling coils, the power connection line connected to each of the coupling coils is disposed outside the stator slot to form a three-phase power connection of the motor, the intermediate connection line of the plurality of stator tooth sets is connected, and the power connection line of each of the stator tooth sets is disposed on the same side as the intermediate connection line.

5. The stator according to claim 2, wherein one end of the coupling coil corresponding to one of the two stator teeth sets adjacently spliced is connected to one end of the coupling coil corresponding to the other one.

6. The stator as claimed in claim 5 further comprising:

a power supply connector wire connected to the other end of the coupling coil corresponding to the one;

and the middle joint line is connected with the other end of the coupling coil corresponding to the other one.

7. The stator of claim 1, wherein the plurality of stator teeth sets are sequentially spliced end to form an annular stator;

the winding direction of the coupling coil on the stator tooth is opposite to the winding direction of the coupling coil on the adjacent stator tooth;

the winding mode of the coupling coil of each stator tooth group is consistent.

8. A stator according to claim 3 or 6, wherein the power connection wires and the intermediate connection wires are integrally provided with the corresponding coupling coils.

9. The stator of claim 1, wherein the coupling coil comprises a plurality of sub-coupling coils, each turn of the stator slot being disposed adjacent to one another between the plurality of sub-coupling coils.

10. An electric machine, comprising:

the stator of any one of claims 1 to 9;

a housing within which the stator is disposed;

the rotor is arranged in the shell, is coupled with the stator, and rotates when the coupling coil is electrified;

the rotating shaft is arranged in the shell and fixedly connected with the rotor, one end of the rotating shaft extends out of the shell, and the rotating shaft rotates along with the rotation of the rotor so as to output driving force.