Motor and vehicle

Abstract

The utility model provides a motor and a vehicle, the motor comprises a stator iron core and a winding installed on the stator iron core, the winding comprises a plurality of wire ring layers distributed along the circumferential direction of the stator iron core, each wire ring layer comprises a plurality of wires, the wires are obliquely arranged along the circumferential direction of the stator iron core, each wire comprises a welding part and an insulating section, each insulating section comprises a fitting part and a tilting part, one end of the fitting part extends out of the stator core, the tilting part is connected with the other end of the fitting part and the welding part, a gap is formed between two adjacent wires in the same wire ring layer, and the gap is larger than the fitting part at one end, close to the welding part, of the tilting part of the same wire. According to the utility model, the attaching part is arranged on the insulating section, so that the space is saved, the position relationship between the leads is more stable, and meanwhile, the tilting part is arranged, so that a creepage safety distance is formed between the welding parts of the adjacent leads in the same lead ring layer, and the probability of current generated between the two adjacent welding parts is reduced.

Description

Technical Field

[0001] The present application relates to the field of motors, and in particular to a motor and a vehicle having the motor. Background Art

[0002] In the prior art, the conductors are arranged in layers along the circumference of the stator core, and the distance between two adjacent conductors in the same layer arranged along the circumference is close, which leads to the proximity of the welding parts of the two conductors in the same layer, thereby generating discharge, damaging the insulation part, and reducing the overall electrical reliability of the stator. Utility Model Content

[0003] The present application provides a motor and a vehicle having the motor, which can reduce discharge between wire welding parts and thus increase the electrical reliability of the entire stator.

[0004] A motor comprises a stator core and a winding mounted on the stator core, wherein the winding comprises a plurality of conductor coil layers distributed along the circumference of the stator core, each of the conductor coil layers comprises a plurality of conducting wires, the conducting wires are arranged obliquely along the circumferential direction of the stator core, the conducting wires comprise a welding portion and an insulating section, wherein the insulating section comprises a fitting portion and a warping portion, one end of the fitting portion extends out of the stator core, the warping portion connects the other end of the fitting portion and the welding portion, a gap is provided between two adjacent conducting wires in the same conductor coil layer, and the gap is larger than the fitting portion at one end of the warping portion of the same conducting wire close to the welding portion.

[0005] Furthermore, the warping portion and the welding portion of the same wire are deflected relative to the bonding portion, and the deflection directions are the same.

[0006] Furthermore, a first angle is formed between the warping portion and the bonding portion of the same wire, and an acute angle formed between the warping portion and the bonding portion gradually increases in a direction away from the bonding portion.

[0007] Furthermore, a second angle is formed between the welding portion and the bonding portion of the same wire, and an acute angle formed between the welding portion and the bonding portion gradually increases in a direction away from the bonding portion.

[0008] Furthermore, a plurality of conductor coil layers are arranged along the circumference of the stator core and nested in sequence to form a multi-layer distribution, and a welding portion of a conductor in each conductor coil layer is welded and connected to a welding portion of a conductor in another adjacent conductor coil layer.

[0009] Furthermore, the conductive wire has a kink portion for maintaining the distance between the two conductive wire coil layers welded to each other, the kink portion is arranged obliquely along the radial direction of the stator core, the kink portion is connected to the welding portion in the radial direction of the stator core, the kink portion of the conductive wire located on the outer side of the conductive wire coil layers welded to each other is bent inwardly, and the kink portion of the conductive wire located on the inner side is bent outwardly.

[0010] Furthermore, the position of the kinked portion on the wire covers the raised portion and a portion of the bonding portion.

[0011] Furthermore, the wire is a flat wire, the welding portion of the wire is cut along a horizontal direction to form a horizontal end, and the ends of the two wires welded to each other are flush with each other.

[0012] Furthermore, an insulating paper is provided between the conductive wire and the stator core, a portion of the insulating paper is bent to form a slot-shaped portion, and the conductive wire passes through the slot-shaped portion.

[0013] A vehicle comprises the above-mentioned motor.

[0014] The utility model arranges a fitting portion on the insulating section to save space and make the positional relationship between the wires more stable. At the same time, a warping portion is arranged so that the welding portions of adjacent wires in the same wire coil layer have a creepage safety distance to reduce the probability of current generated between the two adjacent welding portions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of creepage current at a winding end without a raised portion.

[0016] Figure 2 Schematic diagram of the winding end of the present application.

[0017] Figure 3 It is a schematic diagram of two adjacent conductive wires in the same conductive wire coil layer of the present application.

[0018] Figure 4 It is a schematic diagram of the stator core structure of the present application.

[0019] Explanation of the accompanying reference numerals: 1. conductor coil layer; 1A. first conductor coil layer; 1B. second conductor coil layer; 11. conducting wire; 111. insulating section; 111A. bonding portion; 111B. raised portion; 111C. kinked portion; 112. welding portion; 112A. end portion; 2. stator core; 3. insulating paper; 4. schematic diagram of creepage path. DETAILED DESCRIPTION

[0020] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0021] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0022] During the manufacturing process of the stator in the motor, the conductor 11 is inserted into the stator core 2 and bent near the stator core 2 to form a plurality of mutually nested conductor coil layers 1 distributed along the circumference of the stator core 2 .

[0023] Multiple conductor coil layers 1 are arranged along the circumference of the stator core 2 and nested in sequence to form a multi-layer distribution. The conductors 11 of adjacent conductor coil layers 1 in the radial direction of the stator core 2 are crossed, and the welding portion 112 of a conductor 11 in each conductor coil layer 1 is welded and connected to the welding portion 112 of a conductor 11 in another adjacent conductor coil layer 1.

[0024] like Figure 1As shown, the winding end of the motor is specifically shown, and the wire 11 is inclined along a fixed angle until the welding portion 112. The adjacent wires 11 in the same wire coil layer 1 are arranged close to each other. Since the wires 11 are close to each other, space can be saved. At the same time, the wire 11 located below supports the wire 11 located above, so that the position of the wire 11 is more stable.

[0025] Further, refer to Figure 1 As shown, if the distance between two adjacent welding parts 112 in the same conductor coil layer 1 is too close, discharge will occur. The creepage path schematic line 4 is shown in the figure. The distance of the route traversed by the creepage path schematic line 4 is the creepage distance. The creepage distance refers to the shortest path between two conductive parts or between a conductive part and the equipment protection interface measured along the insulating surface. Since the distance between the welding parts 112 of the circumferentially adjacent conductors 11 is close, this arrangement will cause discharge between one conductor coil layer 1 and another conductor coil layer 1, damaging the electrical insulation.

[0026] like Figures 2-3 As shown, the conductor 11 includes a welding portion 112 for welding and an insulating section 111 covered with an insulating material. The insulating section 111 includes a fitting portion 111A and a raised portion 111B. The raised portion 111B is arranged between the fitting portion 111A and the welding portion 112. The gap between the fitting portions 111A of two adjacent conductors 11 in the same conductor coil layer 1 is the same, and the raised portions 111B of the two conductors 11 are far away from each other so that there is a creepage safety distance between the welding portions 112 of the two conductors 11.

[0027] The close proximity of the fitting parts 111A of two adjacent conductors 11 in the same conductor coil layer 1 also saves space and makes the positioning of the conductors 11 more stable, while the raised parts 111B provide a creepage safety distance and facilitate varnishing and coating of insulating materials.

[0028] Furthermore, the boundary between the laminating portion 111A and the warping portion 111B is as follows: Figure 3 As shown in FIG. 1 , the raised portion 111B and the soldered portion 112 of the same wire 11 are deflected relative to the bonding portion 111A, and the deflection directions are the same.

[0029] In a preferred embodiment, in order to increase the distance between two adjacent welding parts 112, the welding part 112 can also be cut. The cut space can increase the distance and thus increase the creepage distance. However, this will reduce the welding area and reduce the reliability of the welding part 112. In the present application, by tilting the end of the wire 1111 to deflect the tilted part 111B and the welding part 112, the overlapping area of ​​the two adjacent welding parts 112 can be increased, thereby increasing the welding area.

[0030] Furthermore, the heights of the tilted portions 111B of the plurality of conductors 11 in the same coil are the same, and the same height here means that the positions of both ends of the tilted portions 111B of the plurality of conductors 11 in the axial direction of the stator core 2 are substantially the same. The consistent height of the tilted portions 111B makes the magnetic field distribution uniform, and when the heights of the tilted portions 111B of the plurality of conductors 11 are the same, their positions in the axial direction of the stator core 2 are substantially the same, resulting in a more uniform magnetic field distribution between the conductors 11, which can reduce the inhomogeneity of the magnetic field and improve the efficiency and performance of the motor.

[0031] Furthermore, for two adjacent wires 11 in the same coil, one end of the tilting portion 111B of one wire 11 close to the welding portion 112 is located between the two ends of the other tilting portion 111B. This arrangement effectively saves space, and at the same time, under stress or vibration, the tilting portion 111B supports the welding portion 112, increases the mechanical support area between the wires 11, and improves the stability and vibration resistance of the wires 11.

[0032] Furthermore, the length of the warping portion 111B of the same conductor 11 in the circumferential direction of the stator core 2 is greater than the length of the welding portion 112 in the circumferential direction of the stator core 2. The longer length of the warping portion 111B improves the mechanical strength of the conductor 11. The longer length of the warping portion 111B than the welding portion 112 can increase the mechanical support area of ​​the conductor 11 and improve the mechanical strength and vibration resistance of the conductor 11. At the same time, the stress concentration of the welding portion 112 can be reduced. Since the length of the warping portion 111B is greater than the length of the welding portion 112, the stress distribution of the welding portion 112 is more uniform, reducing the stress concentration of the welding portion 112, which helps to improve the reliability and durability of welding.

[0033] Furthermore, the welding portion 112, the bonding portion 111A and the raised portion 111B of the same wire 11 have the same width, which improves the uniformity of the wire 11. The consistent width can ensure the uniformity between the various parts of the wire 11, reduce the current density non-uniformity, and improve the efficiency and performance of the motor.

[0034] Furthermore, a first angle is provided between the raised portion 111B and the fitting portion 111A of the same conductor 11, and the acute angle between the raised portion 111B and the fitting portion 111A gradually increases in the direction away from the fitting portion 111A. This design can provide a better arrangement of the conductors 11, reduce the mutual influence between the conductors 11, and reduce the electromagnetic noise and vibration in the motor; the gradually increasing first angle helps the conductor 11 to better withstand the magnetic field force and electromagnetic pressure when the motor is working, thereby improving the stability and life of the motor; at the same time, the gradually increasing first angle forms a relatively small gap at the fitting portion 111A, while the gap at the raised portion 111B gradually increases, and the gap is the largest at the welding portion 112, effectively transitioning and utilizing limited space to achieve a larger gap between adjacent welding portions 112, which helps to reduce the probability of current generation between adjacent welding portions 112, thereby further improving the reliability and safety of the motor.

[0035] In a preferred embodiment, the second angle between the welding portion 112 and the fitting portion 111A does not change. In this case, there is a larger contact area between the two welding portions 112 welded to each other, so that a more secure welding can be achieved.

[0036] In another preferred embodiment, the acute angle between the welding portion 112 and the bonding portion 111A gradually increases in the direction away from the bonding portion 111A. By setting a gradually increasing second angle, the arrangement of the wires 11 is optimized, the gap between the welding portions 112 between adjacent wires 11 is further expanded, the creepage safety distance is extended, the probability of current generation between adjacent welding portions 112 is reduced, and the reliability and safety of the motor are improved.

[0037] Furthermore, the affixed portion 111A is disposed obliquely along the circumferential direction of the stator core 2 , and the angles between the raised portion 111B and the affixed portion 111A of the conductive wire 11 in the same conductive wire coil layer 1 are the same.

[0038] Furthermore, the conductor 11 is a flat conductor, which can achieve a higher slot fill rate and heat dissipation efficiency compared with a round conductor, so that the motor has a higher performance.

[0039] Furthermore, an end portion 112A is provided at the head of the wire 11, i.e., the welding portion 112. The ends 112A of the two wires 11 welded to each other are flush with each other, and the flat wires are connected through the welding surface formed at the terminal end portion 112A, thereby reducing the end winding height and copper usage, reducing costs, and improving motor efficiency.

[0040] In a preferred embodiment, the conductor 11 is an enameled wire, specifically, a copper core enameled wire.

[0041] In a preferred embodiment, the raised portion 111B can also be formed by cutting off the wire 11, where one side of the wire 11 is cut off to enlarge the gap between two adjacent wires 11. At this time, the area below the welding portion 112 that is cut off is the raised portion 111B, and the area that is not cut off is the fitting portion 111A.

[0042] Furthermore, changing the cutting angle can change the first angle, thereby affecting the change of the gap.

[0043] Further, if Figures 2 to 4 As shown, along the radial direction of the stator core 2, that is, perpendicular to Figure 3 In the direction of the conductor coil, the welding portion 112 of a conductor 11 in each conductor coil layer 1 is welded and connected to the welding portion 112 of a conductor 11 in another adjacent conductor coil layer 1. Figure 2 The first conductive wire layer 1A and the second conductive wire layer 1B are two conductive wire layers 1 welded to each other.

[0044] The conductor 11 has a kink portion 111C for maintaining the distance between two conductor coil layers 1 welded to each other. The kink portion 111C is arranged to be inclined along the radial direction of the stator core 2. The kink portion 111C is connected to the welding portion 112 in the radial direction of the stator core 2. The kink portion 111C of the conductor 11 located on the outside of the conductor coil layers 1 welded to each other is bent inwardly, and the kink portion 111C of the conductor 11 located on the inside is bent outwardly, so as to further increase the creepage safety distance in the radial direction of the stator core 2.

[0045] Furthermore, the position of the kinked portion 111C on the conductor 11 covers the tilted portion 111B and a portion of the fitting portion 111A. Specifically, the position of the kinked portion 111C on the conductor 11 overlaps with the tilted portion 111B and a portion of the fitting portion 111A. The kinked portion 111C refers to the portion of the conductor 11 that turns radially along the stator core 2, and the tilted portion 111B and the fitting portion 111A are the portions that turn circumferentially along the stator core 2.

[0046] Furthermore, the motor includes a stator core 2 , the insulating segment 111 extends out of the stator core 2 , and the fitting portion 111A and the raised portion 111B are both arranged outside the stator core 2 .

[0047] An insulating paper 3 is provided between the conductive wire 11 and the stator core 2 . A portion of the insulating paper 3 is bent to form a slot-shaped portion, and the conductive wire 11 passes through the slot-shaped portion.

[0048] A car is provided with the above-mentioned motor.

[0049] The above is only a preferred implementation mode of the present application, and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred implementation mode as above, it is not used to limit the present application. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent implementation modes without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above implementation modes based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A motor, comprising a stator core (2) and a winding mounted on the stator core (2), the winding comprising a plurality of conductor coil layers (1) distributed along the circumferential direction of the stator core (2), each of the conductor coil layers (1) comprising a plurality of conductors (11), the conductors (11) being arranged obliquely along the circumferential direction of the stator core (2), the conductors (11) comprising a welding portion (112) and an insulating section (111), It is characterized in that The insulating section (111) comprises a fitting portion (111A) and a raised portion (111B), one end of the fitting portion (111A) protrudes from the stator core (2), the raised portion (111B) connects the other end of the fitting portion (111A) and the welding portion (112), a gap exists between two adjacent conductive wires (11) in the same conductive wire coil layer (1), and the gap is larger than the fitting portion (111A) at one end of the raised portion (111B) of the same conductive wire (11) close to the welding portion (112).

2. The motor according to claim 1, It is characterized in that The raised portion (111B) and the welded portion (112) of the same wire (11) are deflected relative to the bonding portion (111A), and the deflection directions are the same.

3. The motor according to claim 1, It is characterized in that A first angle is formed between the warping portion (111B) and the bonding portion (111A) of the same wire (11), and the acute angle formed between the warping portion (111B) and the bonding portion (111A) gradually increases in a direction away from the bonding portion (111A).

4. The motor according to claim 3, It is characterized in that A second angle is formed between the welding portion (112) and the bonding portion (111A) of the same wire (11), and the acute angle formed between the welding portion (112) and the bonding portion (111A) gradually increases in a direction away from the bonding portion (111A).

5. The motor according to claim 1, It is characterized in that A plurality of conductor coil layers (1) are arranged along the circumference of the stator core (2) and are nested in sequence to form a multi-layer distribution, and a welding portion (112) of a conductor (11) in each conductor coil layer (1) is welded and connected to a welding portion (112) of a conductor (11) in another adjacent conductor coil layer (1).

6. The motor according to claim 5, It is characterized in that The conductor (11) has a kink portion (111C) for maintaining the distance between the two conductor coil layers (1) welded to each other. The kink portion (111C) is arranged obliquely along the radial direction of the stator core (2). The kink portion (111C) is connected to the welding portion (112) in the radial direction of the stator core (2). The kink portion (111C) of the conductor (11) located on the outer side of the two conductor coil layers (1) welded to each other is bent inwardly, and the kink portion (111C) of the conductor (11) located on the inner side is bent outwardly.

7. The electric machine according to claim 6, It is characterized in that The position of the kinked portion (111C) on the wire (11) covers the raised portion (111B) and a portion of the bonding portion (111A).

8. The motor according to claim 1, It is characterized in that The wire (11) is a flat wire (11), the welding portion (112) of the wire (11) is cut in a horizontal direction to form a horizontal end portion (112A), and the ends (112A) of the two wires (11) welded to each other are flush with each other.

9. The motor according to claim 1, It is characterized in that An insulating paper (3) is provided between the conductive wire (11) and the stator core (2); a portion of the insulating paper (3) is bent to form a slot-shaped portion, and the conductive wire (11) passes through the slot-shaped portion.

10. A vehicle, It is characterized in that A motor according to any one of claims 1 to 9.

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