Motor stator and motor

Abstract

The utility model belongs to the technical field of motors, and discloses a motor stator and a motor, X slot interiors are distributed in a single slot of the motor stator, X is an odd number greater than or equal to 3, the slot interiors belonging to the same conductor as any slot interior located in the Mth layer are all located in the Mth layer, and M is equal to 1 or X; the plurality of winding units of each phase winding are sequentially connected in series along the radial direction of the stator iron core and each winding unit comprises a plurality of conductors which are sequentially connected along the circumferential direction of the stator iron core, or the plurality of winding units of each phase winding are sequentially connected in series along the circumferential direction of the stator iron core and each winding unit comprises a plurality of conductors which are sequentially connected along the radial direction of the stator iron core; according to the motor stator provided by the invention, the performance of the motor stator in which X slots are distributed in a single slot is the same as that of an existing motor stator in which X + 1 slots are distributed in a single slot, and the layer number distribution of the stator windings on the stator core is reduced, so that the aim of improving the copper fullness rate of the motor stator is fulfilled, the size of the motor is reduced, and the power density of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor stator and a motor. Background Art

[0002] The motor stator of the flat wire motor has a stator core and a stator winding wound on the stator core. The stator winding has three phase windings. The phase winding is a coil formed by winding a plurality of conductors along the circumferential and radial directions of the stator core and connected in sequence.

[0003] For the current flat wire motor, for the motor stator with the number of slots per pole per phase q being 1, the stator winding occupies an even number of layers on the stator core. For example, for the stator winding with 10 wires and 2 parallels, the stator winding occupies a large number of layers on the stator core, resulting in a very low copper fill rate of the motor stator and a larger volume of the motor stator with the same performance. Utility Model Content

[0004] The utility model aims to provide a motor stator and a motor, which can improve the copper full rate of the motor stator, reduce the volume of the motor, and improve the power density of the motor.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A motor stator comprises a stator core and a stator winding, wherein the inner circumferential surface of the stator core is provided with a plurality of slots spaced apart along the circumferential direction thereof; the stator winding comprises a plurality of conductors, each of the conductors comprises two slot interiors respectively inserted in different slots, and the plurality of slot interiors in each slot are distributed in X layers along the radial direction of the stator core; the stator winding comprises a plurality of phase windings, and each of the phase windings comprises a plurality of winding units;

[0007] X is an odd number greater than or equal to 3, the interior of the slots belonging to the same conductor as the interior of any of the slots located in the Mth layer are all located in the Mth layer, M=1 or X;

[0008] The multiple winding units of each phase winding are sequentially connected in series along the radial direction of the stator core, and the winding units include multiple conductors sequentially connected along the circumferential direction of the stator core; or, the multiple winding units of each phase winding are sequentially connected in series along the circumferential direction of the stator core, and the winding units include multiple conductors sequentially connected along the radial direction of the stator core.

[0009] As an implementation scheme of the motor stator, in each winding unit, the number of slots between the two slots at the end is N, and the number of slots between any two adjacent slots is N;

[0010] The plurality of conductors include a plurality of first conductors and a plurality of second conductors, the two slots of any of the first conductors are located at the Xth layer, the two slots of the second conductor are located at the i-th layer and the i+1-th layer respectively, i is an odd number greater than or equal to 1 and less than X, i=1, ..., X-2.

[0011] As an implementation scheme of the motor stator, the winding unit comprises a plurality of conductors sequentially connected along the circumferential direction of the stator core, and the plurality of winding units are sequentially arranged in series along the radial direction of the stator core;

[0012] The plurality of winding units include:

[0013] A first winding unit, wherein the first winding unit is provided with one, a plurality of the first conductors are sequentially connected along the circumference of the stator core to form one first winding unit, and the two slots of any first conductor are both located at the Xth layer;

[0014] The second winding unit, any of which is formed by connecting in sequence a plurality of second conductors distributed circumferentially along the stator core, and two second winding units are arranged at the i-th layer and the i+1-th layer; in the same second winding unit, one of any two circumferentially adjacent slots is located at the i-th layer, and the other is located at the i+1-th layer.

[0015] As an implementation scheme of the motor stator, two slots located in the same slot and respectively located in the i-th layer and the i+1-th layer belong to different second winding units;

[0016] In the same phase winding, the interiors of two circumferentially adjacent slots located in the same layer belong to different second winding units.

[0017] As an implementation scheme of the above motor stator, the winding unit includes a plurality of conductors sequentially connected along the radial direction of the stator core, and the plurality of winding units are sequentially connected in series along the circumferential direction of the stator core;

[0018] The two slots of any first conductor are both located in the first layer, the winding unit includes one first conductor and two groups of the second conductors, the multiple slots of the same winding unit are divided into two groups, and each group of the slots includes X slots, and the X slots connected in sequence are distributed in the first layer, the second layer, ..., the Xth layer in sequence.

[0019] As an implementation scheme of the above motor stator, the conductor further includes two welding portions, and along the circumference of the stator core, the interiors of the two slots of the same conductor are located between the two welding portions of the conductor.

[0020] As an implementation scheme of the motor stator, the projection of each winding unit on a preset plane is a first projection, and the first projection is U-shaped; for the first projection of any winding unit, two first projections located on both sides of the first conductor are parallel; the preset plane is perpendicular to the axial direction of the stator core;

[0021] For the first projection of the same winding unit, any first projection located on both sides of the first conductor is inclined relative to the radial direction of the stator core and is a straight line, or any first projection located on both sides of the first conductor is in a wavy shape extending along the radial direction of the stator core.

[0022] As an implementation scheme of the motor stator, for the first projection of the same winding unit, any first projection located on both sides of the first conductor is in a wave shape extending in the radial direction of the stator core;

[0023] In any three adjacent groove interiors connected in sequence in the same group of groove interiors, two groove interiors located at the ends are located in the same groove.

[0024] As an implementation scheme of the above motor stator, the conductor further includes two welding portions, and along the circumference of the stator core, the two welding portions of the same conductor are located between the insides of two slots of the conductor.

[0025] As a possible implementation scheme of the above motor stator, the number of slots per pole and per phase of the stator winding is 1.

[0026] In order to achieve the above-mentioned purpose, the utility model further provides a motor, comprising a motor rotor and the motor stator described in any of the above-mentioned schemes, wherein the motor rotor is rotatably arranged in the inner hole of the stator core.

[0027] Beneficial effects of the utility model:

[0028] The motor stator provided by the utility model has X slot interiors distributed in a single slot, X≥3 and is an odd number, the slot interiors belonging to the same conductor as the interior of any slot located in the Mth layer are all located in the Mth layer, M=1 or X; a plurality of winding units of each phase winding are sequentially connected in series along the radial direction of the stator core, and the winding units include a plurality of conductors sequentially connected along the circumferential direction of the stator core, or a plurality of winding units of each phase winding are sequentially connected in series along the circumferential direction of the stator core, and the winding units include a plurality of conductors sequentially connected along the radial direction of the stator core, so that the motor stator with X slot interiors distributed in a single slot achieves the same performance as the motor stator with X+1 slot interiors distributed in a single slot in the prior art, and reduces the number of layers of the stator winding on the stator core to achieve the purpose of improving the copper full rate of the motor stator, thereby reducing the volume of the motor and improving the power density of the motor.

[0029] The motor provided by the utility model comprises a motor rotor and the above-mentioned motor stator, wherein the motor rotor is rotatably arranged in the inner hole of the stator core. The motor adopts the above-mentioned motor stator, which is beneficial to improve the copper full rate of the motor stator, reduce the volume of the motor, and improve the power density of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a conductor provided in Embodiment 1 of the present utility model;

[0031] Figure 2 This is an axial schematic diagram of the motor stator provided in the first embodiment of the utility model;

[0032] Figure 3 This is an axial schematic diagram of the motor stator provided in the second embodiment of the utility model;

[0033] Figure 4 It is a schematic diagram of a conductor provided in Embodiment 3 of the present utility model;

[0034] Figure 5 It is an axial schematic diagram of the motor stator provided in the third embodiment of the utility model.

[0035] In the figure:

[0036] 11. a first winding unit; 12. a second winding unit; 13. a third winding unit; 14. a fourth winding unit;

[0037] 21. a first conductor; 22. a second conductor;

[0038] 200, conductor; 201, inside of the slot; 202, welding part; 203, connecting part. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] Embodiment 1

[0044] The present embodiment provides a motor stator and a motor, the motor comprising a motor rotor and a motor stator, the motor stator being provided with an inner hole, the motor rotor being rotatably inserted into the inner hole. The motor stator comprises a stator core, the inner surface of the stator core being provided with a plurality of slots spaced apart along its circumference. Specifically, the stator core is an annular structure, the inner circumference of the annular structure being provided with a plurality of teeth convexly, a slot being formed between two adjacent teeth, so that the inner circumference of the stator core is provided with a plurality of slots spaced apart along its circumference. It should be noted that the stator core can be formed by stacking a plurality of annular magnetic steel plates along the axial direction of the stator core.

[0045] The motor stator also includes stator windings, such as Figure 1 and Figure 2 As shown, the stator winding includes a plurality of conductors 200, and the conductor 200 includes two slot interiors 201 respectively inserted in different slots, and the plurality of slot interiors 201 in each slot are distributed in X layers along the radial direction of the stator core, where X is an odd number greater than or equal to 3. For example, X=5. In other embodiments, X can also be selected from 3, 7, 9, etc., which will not be illustrated one by one here.

[0046] It should be noted that, one of the first layer and the Xth layer of the stator core is the innermost layer of the stator core, and the other is the outermost layer of the stator core, which is not specifically limited here.

[0047] Each conductor 200 further includes two welding portions 202 connected to the two slot interiors 201 in a one-to-one correspondence. In this embodiment, the two slot interiors 201 of each conductor 200 are distributed between the two welding portions 202 of the conductor 200 along the circumferential direction of the stator core. Each conductor 200 further includes a connecting portion 203, the two ends of the connecting portion 203 are respectively connected to the two slot interiors 201, and the connecting portion 203 is located between the two slot interiors 201 along the circumferential direction of the stator core.

[0048] It should be noted that Figure 2 The black dots in the figure represent the inside of the groove 201 , the dotted lines represent the welding parts 202 , and the solid lines represent the connecting parts 203 .

[0049] The stator winding includes a plurality of phase windings, and the number of slots per pole and per phase of the stator winding is 1. Exemplarily, the stator winding is mounted on the stator core to form three phase windings, namely, a U-phase winding, a W-phase winding and a V-phase winding.

[0050] The winding forms of the three phase windings are the same. The following takes the U phase winding as an example. Figure 1 As shown, the winding form of the U-phase winding is specifically introduced.

[0051] The slot interiors 201 belonging to the same conductor 200 as any slot interior 201 located in the Mth layer are all located in the Mth layer, where M=1 or X. For example, M=X=5.

[0052] Each phase winding includes a plurality of winding units connected in series, and the winding unit includes a plurality of conductors 200 connected in series along the circumferential direction of the stator core, and the plurality of winding units are arranged in series along the radial direction of the stator core, and each phase winding is formed with two terminals. Taking the U-phase winding as an example, the two terminals are the U-phase lead terminal and the U-phase outlet terminal. It should be noted that the three phase windings can be connected in a star connection to form a motor winding, and the three phase windings can also be connected in a triangle connection to form a motor winding. This embodiment does not specifically limit the connection method of the three phase windings.

[0053] In this embodiment, each phase winding includes X winding units, wherein the first and second layers are distributed with two winding units, the third and fourth layers are distributed with two winding units, and the fifth layer is distributed with one winding unit.

[0054] Furthermore, in each winding unit, the number of slots between two slot interiors 201 located at the end is N, and the number of slots between any two adjacent slot interiors 201 connected is N.

[0055] Exemplarily, N=3. Specifically, in the same winding unit, the number of slots between two slot interiors 201 located at the end is 3, and the number of slots between any two adjacent slot interiors 201 connected is 3.

[0056] Furthermore, the plurality of conductors 200 include a plurality of first conductors 21 and a plurality of second conductors 22, the two slot interiors 201 of any first conductor 21 are located at the Xth layer, the two slot interiors 201 of the second conductor 22 are located at the i-th layer and the i+1-th layer respectively, i is an odd number greater than or equal to 1 and less than X, i=1, ..., X-2.

[0057] Specifically, the multiple winding units include a first winding unit 11 and a plurality of second winding units 12, wherein a plurality of first conductors 21 are connected in sequence along the circumference of the stator core to form a first winding unit 11, and two slot interiors 201 of any first conductor 21 are located at the Xth layer; any second winding unit 12 is formed by connecting in sequence a plurality of second conductors 22 distributed along the circumference of the stator core, and two second winding units 12 are arranged at the i-th layer and the i+1-th layer; in the same second winding unit 12, one of any two circumferentially adjacent slot interiors 201 is located at the i-th layer, and the other is located at the i+1-th layer.

[0058] Exemplarily, a first winding unit 11 is distributed on the 5th layer, and two slot interiors 201 of the first conductor 21 are both located on the 5th layer; two second winding units 12 are distributed on the 1st and 2nd layers, and two second winding units 12 are distributed on the 3rd and 4th layers. For any second winding unit 12 distributed on the 1st and 2nd layers, one of any two circumferentially adjacent slot interiors 201 is distributed on the 1st layer, and the other is distributed on the 2nd layer; for any second winding unit 12 distributed on the 3rd and 4th layers, one of any two circumferentially adjacent slot interiors 201 is distributed on the 3rd layer, and the other is distributed on the 4th layer.

[0059] Furthermore, the interiors 201 of two slots located in the same slot and respectively located in the i-th layer and the i+1-th layer belong to different second winding units 12 ; in the same phase winding, the interiors 201 of two circumferentially adjacent slots located in the same layer belong to different second winding units 12 .

[0060] Taking the slot interiors 201 distributed in the 3rd slot and the 6th slot as an example, the two slot interiors 201 located in the 3rd slot and located in the 1st layer and the 2nd layer respectively belong to different second winding units 12, and the two slot interiors 201 located in the 3rd slot and located in the 3rd layer and the 4th layer respectively belong to different second winding units 12. The two slot interiors 201 located in the 6th slot and located in the 1st layer and the 2nd layer respectively belong to different second winding units 12, and the two slot interiors 201 located in the 6th slot and located in the 3rd layer and the 4th layer respectively belong to different second winding units 12.

[0061] The two slots 201 located in the first layer and located in the third slot and the sixth slot respectively belong to different second winding units 12, and the two slots 201 located in the second layer and located in the third slot and the sixth slot respectively belong to different second winding units 12. The two slots 201 located in the third layer and located in the third slot and the sixth slot respectively belong to different second winding units 12, and the two slots 201 located in the fourth layer and located in the third slot and the sixth slot respectively belong to different second winding units 12.

[0062] The projection of the second winding unit 12 on the preset plane is recorded as the first projection, and the preset plane is perpendicular to the axial direction of the stator core. With the above arrangement, each second winding unit 12 can be arranged in a wave shape along the circumference of the stator core, and the crests and troughs of the two second winding units 12 distributed in the i-th layer and the i+1-th layer are arranged opposite to each other in the radial direction of the stator core.

[0063] The motor stator provided in this embodiment has X slot interiors 201 distributed in a single slot, and X is an odd number greater than or equal to 3, and the slot interior 201 belonging to the same conductor 200 as any slot interior 201 located in the Mth layer is located in the Mth layer, M=1 or X; multiple winding units of each phase winding are sequentially connected in series along the radial direction of the stator core, and the winding unit includes multiple conductors 200 sequentially connected along the circumferential direction of the stator core, or multiple winding units of each phase winding are sequentially connected in series along the circumferential direction of the stator core, and the winding unit includes multiple conductors 200 sequentially connected along the radial direction of the stator core, so that the motor stator with X slot interiors 201 distributed in a single slot achieves the same performance as the motor stator with X+1 slot interiors 201 distributed in a single slot in the prior art, and reduces the number of layers of the stator winding on the stator core to achieve the purpose of improving the copper full rate of the motor stator, thereby reducing the volume of the motor and improving the power density of the motor.

[0064] Embodiment 2

[0065] The difference between this embodiment and the first embodiment is that the distribution form of each winding unit of the phase winding and the distribution form of a single winding unit are different. Figure 3 The phase winding of this embodiment is described in detail. In order to distinguish it from the winding unit of the first embodiment, the winding unit of this embodiment is recorded as the third winding unit 13.

[0066] Specifically, Figure 3 As shown, a plurality of third winding units 13 of each phase winding are sequentially connected in series along the circumferential direction of the stator core, and the third winding unit 13 includes a plurality of conductors 200 sequentially connected along the radial direction of the stator core.

[0067] Taking the case where both slot interiors 201 of any first conductor 21 are located in the first layer as an example, the third winding unit 13 includes a first conductor 21 and two groups of second conductors 22. The multiple slot interiors 201 of the same third winding unit 13 are divided into two groups, and each group of slot interiors 201 includes X slot interiors 201. The X slot interiors 201 connected in sequence are distributed in the first layer, the second layer, ..., the Xth layer in sequence.

[0068] Taking X=5 and a third winding unit 13 distributed between slots 24 and 42 as an example, the third winding unit 13 includes a first conductor 21 distributed in the first layer, two second conductors 22 distributed in the second and third layers respectively in two slot interiors 201, and two second conductors 22 distributed in the fourth and fifth layers respectively in two slot interiors 201. Each group has five slot interiors 201, and the five slot interiors 201 of each group are distributed in the first layer, the second layer, ..., the fifth layer respectively.

[0069] Furthermore, the projection of each third winding unit 13 on the preset plane is a first projection, and the first projection is U-shaped; for the first projection of any third winding unit 13 , two first projections located on both sides of the first conductor 21 are parallel.

[0070] For the first projection of the same third winding unit 13 , any first projection located on both sides of the first conductor 21 is inclined relative to the radial direction of the stator core and is in a straight line.

[0071] Taking a third winding unit 13 distributed between slots 24 and 42 as an example, one group of slot interiors 201 of the third winding unit 13 are respectively distributed in the 5th layer of the 24th slot, the 4th layer of the 30th slot, the 3rd layer of the 33rd slot, the 2nd layer of the 36th slot, and the 1st layer of the 39th slot; another group of slot interiors 201 are respectively distributed in the 1st layer of the 42nd slot, the 2nd layer of the 39th slot, the 3rd layer of the 36th slot, the 4th layer of the 33rd slot, and the 5th layer of the 30th slot, so that the first projection of the third winding unit 13 is a U-shaped structure extending along the circumferential and radial directions of the stator core, and two adjacent third winding units 13 distributed along the circumferential direction of the stator core do not cross each other, thereby simplifying the connection.

[0072] This embodiment enables a motor stator with X slots 201 distributed in a single slot to achieve the same performance as a motor stator with X+1 slots 201 distributed in a single slot in the prior art, and reduces the number of layers of the stator winding on the stator core to achieve the purpose of improving the copper full rate of the motor stator, thereby reducing the volume of the motor and improving the power density of the motor.

[0073] Embodiment 3

[0074] The difference between this embodiment and the second embodiment is that the structure of the single conductor 200 used is different, and the distribution form of the single winding unit is different. Figure 4 and Figure 5 The winding unit is introduced. In order to distinguish it from the winding units in the first and second embodiments, the winding unit in this embodiment is recorded as a fourth winding unit 14.

[0075] like Figure 4 As shown, the conductor 200 further includes two welding portions 202 , and along the circumferential direction of the stator core, two slot interiors 201 of the same conductor 200 are located between the two welding portions 202 of the conductor 200 .

[0076] like Figure 5 As shown, for the first projection of the same fourth winding unit 14, any first projection located on both sides of the first conductor 21 is in a wave shape extending along the radial direction of the stator core; the interior of each group of slots 201 is distributed in a wave shape along the radial direction of the stator core; in any three adjacent slot interiors 201 connected in sequence in the same group of slot interiors 201, the two slot interiors 201 located at the ends are located in the same slot.

[0077] Taking X=5 and a fourth winding unit 14 distributed in the 21st slot to the 27th slot as an example, the fourth winding unit 14 includes a first conductor 21 distributed in the 1st layer, two second conductors 22 distributed in the 2nd and 3rd layers, and two second conductors 22 distributed in the 4th and 5th layers.

[0078] One group of slot interiors 201 of the fourth winding unit 14 are respectively distributed in the 5th layer of the 21st slot, the 4th layer of the 24th slot, the 3rd layer of the 21st slot, the 2nd layer of the 24th slot, and the 1st layer of the 21st slot, and the other group of slot interiors 201 are respectively distributed in the 1st layer of the 24th slot, the 2nd layer of the 27th slot, the 3rd layer of the 24th slot, the 4th layer of the 27th slot, and the 5th layer of the 24th slot, so that the first projection of the fourth winding unit 14 is a U-shaped structure extending along the circumferential and radial directions of the stator core, and two adjacent fourth winding units 14 distributed along the circumferential direction of the stator core do not cross each other, thereby simplifying the connection.

[0079] The motor stator provided in this embodiment can also achieve the same performance as the motor stator with X slots 201 distributed in a single slot in the prior art, thereby reducing the number of layers of the stator winding on the stator core to improve the copper fill rate of the motor stator, thereby reducing the volume of the motor and improving the power density of the motor.

[0080] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A motor stator, comprising a stator core and a stator winding, wherein the inner circumferential surface of the stator core is provided with a plurality of slots spaced apart along the circumferential direction thereof; the stator winding comprises a plurality of conductors (200), each of the conductors (200) comprises two slot interiors (201) respectively inserted into different slots, and the plurality of slot interiors (201) in each slot are distributed in X layers along the radial direction of the stator core; the stator winding comprises a plurality of phase windings, and each of the phase windings comprises a plurality of winding units; It is characterized in that X is an odd number greater than or equal to 3, the slot interior (201) belonging to the same conductor (200) as any slot interior (201) located in the Mth layer is located in the Mth layer, M=1 or X; The plurality of winding units of each phase winding are sequentially connected in series along the radial direction of the stator core, and the winding units include a plurality of conductors (200) sequentially connected along the circumferential direction of the stator core; or, the plurality of winding units of each phase winding are sequentially connected in series along the circumferential direction of the stator core, and the winding units include a plurality of conductors (200) sequentially connected along the radial direction of the stator core.

2. The motor stator according to claim 1, characterized in that: In each of the winding units, the number of slots between two slot interiors (201) located at the end is N, and the number of slots between any two adjacent slot interiors (201) connected to each other is N; The plurality of conductors (200) include a plurality of first conductors (21) and a plurality of second conductors (22), wherein the two slot interiors (201) of any of the first conductors (21) are both located at the Xth layer, and the two slot interiors (201) of the second conductor (22) are respectively located at the i-th layer and the i+1-th layer, where i is an odd number greater than or equal to 1 and less than X, i=1, ..., X-2.

3. The motor stator according to claim 2, characterized in that: The winding unit comprises a plurality of conductors (200) sequentially connected along the circumferential direction of the stator core, and the plurality of winding units are sequentially arranged in series along the radial direction of the stator core; The plurality of winding units include: A first winding unit (11), wherein the first winding unit (11) is provided with one, a plurality of the first conductors (21) are sequentially connected along the circumference of the stator core to form one first winding unit (11), and the interiors (201) of the two slots of any of the first conductors (21) are both located at the Xth layer; A second winding unit (12), any second winding unit (12) is formed by connecting a plurality of second conductors (22) distributed in the circumferential direction of the stator core in sequence, and two second winding units (12) are arranged in the i-th layer and the (i+1)-th layer; in the same second winding unit (12), one of the insides (201) of any two circumferentially adjacent slots is located in the i-th layer, and the other is located in the (i+1)-th layer.

4. The motor stator according to claim 3, characterized in that: The two slots (201) located in the same slot and respectively located in the i-th layer and the (i+1)-th layer belong to different second winding units (12); In the same phase winding, the interiors (201) of two circumferentially adjacent slots located in the same layer belong to different second winding units (12).

5. The motor stator according to claim 2, characterized in that: The winding unit comprises a plurality of conductors (200) sequentially connected along the radial direction of the stator core, and the plurality of winding units are sequentially connected in series along the circumferential direction of the stator core; The two slot interiors (201) of any one of the first conductors (21) are both located in the first layer, the winding unit comprises one of the first conductors (21) and two groups of the second conductors (22), the multiple slot interiors (201) of the same winding unit are divided into two groups, and each group of the slot interiors (201) comprises X slot interiors (201), and the X slot interiors (201) connected in sequence are distributed in the first layer, the second layer, ..., the Xth layer in sequence.

6. The motor stator according to any one of claims 2 to 5, characterized in that: The conductor (200) further comprises two welding portions (202), and along the circumferential direction of the stator core, the interiors (201) of the two slots of the same conductor (200) are located between the two welding portions (202) of the conductor (200).

7. The motor stator according to claim 5, characterized in that: The projection of each winding unit on the preset plane is a first projection, and the first projection is U-shaped; for the first projection of any winding unit, two first projections located on both sides of the first conductor (21) are parallel; the preset plane is perpendicular to the axial direction of the stator core; For the first projection of the same winding unit, any of the first projections located on both sides of the first conductor (21) are arranged to be inclined relative to the radial direction of the stator core and are straight, or any of the first projections located on both sides of the first conductor (21) are in a wavy shape extending along the radial direction of the stator core.

8. The motor stator according to claim 7, characterized in that: For the first projection of the same winding unit, any first projection located on both sides of the first conductor (21) is in a wave shape extending in the radial direction of the stator core; Among any three adjacent groove interiors (201) connected in sequence in the same group of groove interiors (201), two groove interiors (201) located at the ends are located in the same groove.

9. The motor stator according to claim 8, characterized in that: The conductor (200) further comprises two welding portions (202), and along the circumferential direction of the stator core, the two welding portions (202) of the same conductor (200) are located between the two slot interiors (201) of the conductor (200).

10. The motor stator according to claim 1 or 2, characterized in that: The number of slots per phase per pole of the stator winding is 1.

11. A motor, characterized in that: It comprises a motor rotor and the motor stator according to any one of claims 1 to 10, wherein the motor rotor is rotatably arranged in the inner hole of the stator core.

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