Coil, winding, stator, linear motor, actuator, suspension system and vehicle

Abstract

The present application relates to a coil, a winding, a stator, a linear motor, an actuator, a suspension device, and a vehicle, in which the coil comprises: a coil part in which a central space penetrating the coil part in a penetrating direction is formed; the connecting part is used for connecting two adjacent coil parts; wherein at least part of the connecting part extends in the extending direction, and the included angle formed by the penetrating direction and the extending direction is defined as an extending angle; the value range of the extension angle ranges from 0 degree to 90 degrees. The coil, the winding, the stator, the linear motor, the actuator, the suspension device and the vehicle have the beneficial effects that the uniformity and the winding difficulty of a magnetic field are considered by limiting the extension direction of the connecting part.

Description

Technical Field

[0001] This application relates to the technical field of motors, and particularly to a coil, a winding, a stator, a linear motor, an actuator, a suspension device and a vehicle. Background Art

[0002] A linear motor is a power transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism.

[0003] The coil of a linear motor generally includes multiple wound coil parts. To achieve the transitional connection of adjacent coil parts, part of the cable is bent to form a connection structure for adjacent coil parts. The connection structures in the prior art cannot take into account both the uniformity of the magnetic field and the winding difficulty of the coil. Summary of the Utility Model

[0004] The embodiments of this application provide a coil that takes into account both the uniformity of the magnetic field and the winding difficulty to at least partially solve the above technical problems.

[0005] To achieve the above object, according to the first aspect of this application, there is provided a coil, including:

[0006] A coil part, having a central space that penetrates the coil part along the penetration direction;

[0007] A connection part, used to connect two adjacent coil parts;

[0008] Wherein, at least part of the connection part extends along the extension direction, and the included angle formed by the penetration direction and the extension direction is defined as the extension angle; the value range of the extension angle includes greater than or equal to 0° and less than 90°.

[0009] Optionally, the connection part has:

[0010] A first connection end, combined with one of the adjacent coil parts;

[0011] A second connection end, combined with the other adjacent coil part.

[0012] Optionally, the connection part is integrally formed with the adjacent coil part in the penetration direction.

[0013] Optionally, the coil is wound from a single cable.

[0014] Optionally, the cross-sectional shape of the cable is rectangular or circular.

[0015] Optionally, the coil further includes:

[0016] A wiring part, used to connect two adjacent coils;

[0017] Among them, the projections of two different ones of the connection parts at least partially overlap in the penetration direction.

[0018] Optionally, the coil further includes:

[0019] A connection part for connecting two adjacent ones of the coils;

[0020] Among them, the projections of two different ones of the connection parts are arranged at intervals in the penetration direction.

[0021] According to a second aspect of the present application, there is also provided a winding, including the coil as described above; a plurality of the coils are arranged at intervals in the penetration direction, and two adjacent ones of the coils are connected by a connection part.

[0022] Optionally, the projections of a plurality of connection parts of the winding at least partially coincide in the extension direction.

[0023] Optionally, the projection contours of a plurality of connection parts of the winding are arranged at intervals in the extension direction.

[0024] According to a third aspect of the present application, there is also provided a stator, including:

[0025] The winding as described above;

[0026] A stator core body having a plurality of receiving grooves arranged at intervals along the penetration direction;

[0027] Among them, the coils of the winding are respectively arranged in the receiving grooves.

[0028] Optionally, the coils of different-phase windings are alternately arranged at intervals.

[0029] Optionally, the stator further has:

[0030] A wire passing groove extending along the penetration direction;

[0031] At least a part of the connection part of the winding is located in the wire passing groove.

[0032] According to a fourth aspect of the present application, there is also provided a linear motor, including the stator as described above.

[0033] According to a fifth aspect of the present application, there is also provided an actuator, including a first component and a second component, the first component and the second component move relative to each other along the axial direction of the actuator, one of the first component and the second component includes the winding as described above, and the other of the first component and the second component includes a permanent magnet component.

[0034] Optionally, one of the first component and the second component is adapted to be connected to the vehicle body, and the other of the first component and the second component is adapted to be connected to the wheel.

[0035] Optionally, the first component is a mover component and the second component is a stator component, and the stator component includes the stator as described above.

[0036] According to a sixth aspect of the present application, there is also provided a suspension system including the actuator as described above.

[0037] According to a seventh aspect of the present application, there is also provided a vehicle including the linear motor or the suspension system as described above.

[0038] The beneficial effects of the present application are as follows: A coil, a winding, a stator, a linear motor, an actuator, a suspension device, and a vehicle are provided, which take into account the uniformity of the magnetic field and the winding difficulty by defining the extension direction of the connecting portion.

[0039] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0040] Considering that the connecting portion is inclined relative to the coil portion, it will affect the uniformity of the magnetic field generated by the coil portion and the winding difficulty. And when the extension angle is too large, the length of the inclined portion of the connecting portion is longer, and the influence on the magnetic field uniformity is greater, but the bending difficulty will be reduced, thereby reducing the coil winding difficulty. When the extension angle is too small, correspondingly, the length of the connecting portion is also small, which is beneficial to forming a uniform magnetic field, but the winding difficulty will be relatively large due to stress and bending resistance. The present application forms a transition connection between two adjacent coil portions through the connecting portion, and defines the value range of the extension angle formed by the extension direction of the connecting portion and the penetration direction of the central space as 0° - 90°, which can reduce the coil winding difficulty while ensuring the uniformity of the magnetic field formed by the coil.

[0041] Other features and advantages of the present application will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application, and those skilled in the art can obtain other drawings without creative efforts based on these drawings.

[0043] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals represent the same parts in the following description.

[0044] Figure 1 is a schematic diagram of the overall structure of the coil provided in an exemplary embodiment of the present application;

[0045] Figure 2 It is an expanded schematic view of the connecting part in the coil provided in the exemplary embodiment of the present application;

[0046] Figure 3 It is a schematic view of the overall structure of the winding provided in the exemplary embodiment of the present application;

[0047] Figure 4 It is a schematic view of the overall structure of the stator provided in the exemplary embodiment of the present application;

[0048] Figure 5 It is a schematic view of the structure of a part of the stator provided in the exemplary embodiment of the present application;

[0049] Figure 6 It is a schematic view of the overall structure of the vehicle provided in the exemplary embodiment of the present application.

[0050] Description of reference numerals:

[0051] 100. Coil;

[0052] 110. Coil part; 110a. Central space;

[0053] 120. Wiring part;

[0054] 130. Connecting part; 131. First connection end; 132. Second connection end;

[0055] C1. Central axis;

[0056] 200. Winding;

[0057] 10. Stator;

[0058] 300. Stator core; 300a. Receiving groove; 300b. Wiring groove;

[0059] 1. Vehicle. Detailed implementation manners

[0060] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0061] Refer to Figure 1 and Figure 2 , and, in the present application, the through direction corresponds to the axial direction of the central axis C1, and the stacking direction corresponds to the radial direction of the central axis C1.

[0062] According to the first aspect of the present application, refer toFigures 1 to 4 , this application provides a coil 100, including a coil part 110 and a connecting part 130.

[0063] The coil part 110 is formed with a central space 110a that penetrates the coil part 110 along the penetration direction. The connecting part 130 is used to connect two adjacent coil parts 110; at least part of the connecting part 130 extends along the extension direction, and the included angle formed by the penetration direction and the extension direction is defined as the extension angle α; the value range of the extension angle α includes greater than or equal to 0° and less than 90°.

[0064] It can be understood that the connecting part 130 may extend in a spiral shape, and the extension direction may be the tangent direction of the connecting part 130. The connecting part 130 smoothly connects the two coil parts 110 to form an interlayer transition.

[0065] Through the above technical solution, by limiting the extension direction of the connecting part 130, the uniformity of the magnetic field and the winding difficulty can be taken into account.

[0066] Considering that the connecting part 130 is inclined relative to the coil part 110, it will affect the uniformity of the magnetic field generated by the coil part 110 and the winding difficulty. And when the extension angle α is too large, the length of the inclined part of the connecting part 130 becomes longer, and the influence on the magnetic field uniformity becomes greater, but the bending difficulty will be reduced, thereby reducing the winding difficulty of the coil 100. When the extension angle α is too small, correspondingly, the length of the connecting part 130 is also smaller, which is beneficial to form a uniform magnetic field, but the winding difficulty will be relatively large due to stress and bending resistance.

[0067] As a preferred solution, the value range of the extension angle α includes 50° - 90°.

[0068] Through the above technical solution, this application forms a transitional connection between two adjacent coil parts 110 through the connecting part 130, and limits the value range of the extension angle α formed by the extension direction of the connecting part 130 and the penetration direction of the central space 110a to 50° - 90°. While ensuring the uniformity of the magnetic field formed by the coil 100, the winding difficulty of the coil 100 can be reduced.

[0069] Appropriately increasing the extension angle α and reducing the bending angle of the connecting part 130 relative to the coil part 110 can make the connecting part 130 and the coil part 110 achieve a relatively gentle transition, effectively disperse the stress distribution of the connecting part 130, significantly reduce the fracture risk caused by stress concentration, improve the durability of the coil 100, and the formation with a larger extension angle α is beneficial to the process manufacturing, and it is not easy to cause wire damage or increase the process difficulty due to winding distortion. At the same time, it avoids the bending points of the connecting part 130 being too dense and easily damaging the insulating layer of the enameled wire, destroying the insulation and being unfavorable for production and use.

[0070] As a further preferred solution, the value range of the extension angle α includes 60° - 90°.

[0071] In some embodiments, the number of coil portions 110 of each coil 100 in the present application is greater than or equal to 2. The winding direction of the coil 100 is not limited either, including various winding methods combined by clockwise and counterclockwise winding.

[0072] It can be understood that when the number of coil portions 110 of each coil 100 is equal to 2, the connecting portion 130 can be located in the central space 110a or on the outer periphery of the coil portion 110. When the number of coil portions 110 of each coil 100 is greater than 2, the connecting portion 130 is provided both in the central space 110a and on the outer periphery of the coil portion 110.

[0073] In some embodiments, referring to Figure 1 and Figure 2 , the connecting portion 130 has: a first connecting end 131 and a second connecting end 132.

[0074] The first connecting end 131 is combined with one adjacent coil portion 110; the second connecting end 132 is combined with another adjacent coil portion 110.

[0075] In some embodiments, the connecting portion 130 is integrally formed with the coil portion 110 adjacent in the through direction.

[0076] In some embodiments, referring to Figure 1 , Figure 4 and Figure 5 , the coil 100 can be wound from a single cable.

[0077] By winding the coil 100 from a single cable, the solder joints required for connecting the lead wires between the coils 100 connected in series can be eliminated, and when the number of coil portions 110 of the coil 100 is greater than 1, the solder joints between the coil portions 110 sandwiched by two coil portions 110 can be eliminated, the welding process is cancelled, and at the same time, the risk of insulation withstand voltage failure at the solder joints caused by the welding process is avoided.

[0078] In some embodiments, the cross-sectional shape of the cable is rectangular or circular.

[0079] In some embodiments, referring to Figures 1 to 3 , the coil 100 further includes: a wiring portion 120. The wiring portion 120 is used to connect two adjacent coils 100.

[0080] As an optional solution, the projections of two different wiring portions 120 in the through direction at least partially overlap.

[0081] By overlapping the projections of different connection portions 120 along the penetration direction, that is, the axial direction of the central axis C1, the connection portions 120 can be spatially saved in the axial direction, avoiding multi-position slotting of the stator core 300, reducing the cost of additional slotting of the iron core, reducing the air gap that must be reserved due to slotting for placing the cable, and reducing the situation of cable mutation, thereby improving the lifting force of the motor.

[0082] As another alternative, the projections of two different connection portions 120 are spaced apart in the penetration direction.

[0083] By setting the projections of different connection portions 120 to be spaced apart along the penetration direction, that is, the axis of the central axis C1, during the winding process, the position of the connection portion 120 in the coil 100 can be unrestricted, and the connection portion 120 can be led out at any position of the coil 100. The winding method is more diverse and convenient, avoiding the problem that the coils 100 cannot be connected in series due to incorrect setting of the position of the connection portion 120.

[0084] It should be noted that in this application, setting the projections of different connection portions 120 to be spaced apart means that the orthographic projections of the connection portions 120 along the central axis do not overlap at all. That is, along the circumferential direction of the central axis C1, different connection portions 120 are located at different circumferential positions, and along the axial direction of the central axis C1, different connection portions 120 are located at different axial positions.

[0085] According to the second aspect of the present application, referring to Figure 3 , a winding 200 is provided, including a coil 100.

[0086] Among them, the coil 100 is the coil 100 described above. This winding 200 includes the above-mentioned coil 100, so it has all the beneficial effects of the above-mentioned coil 100, which will not be elaborated herein.

[0087] Among them, several coils 100 are spaced apart in the penetration direction, and two adjacent coils 100 are connected by a connection portion 120, so that the coil portions 110 connected in series by the connection portion 120 form a co-phase coil 100.

[0088] In some embodiments, the projections of multiple connection portions of the winding 200 at least partially overlap in the extending direction.

[0089] In some embodiments, the projection profiles of multiple connection portions of the winding 200 are spaced apart in the extending direction.

[0090] According to the third aspect of the present application, referring to Figure 4 and Figure 5 , a stator 10 is provided, including a stator core 300 and a winding 200.

[0091] The stator core 300 has a plurality of receiving grooves 300a spaced apart along the through direction; the coils 100 of the winding 200 are respectively disposed in the receiving grooves 300a.

[0092] In some embodiments, the coils 100 of different-phase windings 200 are alternately spaced.

[0093] In some embodiments, the coils 100 of the winding 200 located in the same receiving groove 300a are of the same phase. Thus, each receiving groove 300a can be provided with only one coil 100. Compared with the form of placing coils 100 of different phases in the same receiving groove 300a, there is a larger air gap between adjacent coils 100 in the axial direction of the stator 10. Insulation can be completed by relying on the paint film on its own, and there is no need to use interlayer insulation, thus reducing the space occupied by the interlayer insulation. Therefore, the space utilization rate of the stator core 300 can be improved.

[0094] In some embodiments, the stator further has: a wire passing groove 300b. The wire passing groove 300b extends along the through direction. Among them, at least part of the wiring portion 120 of the winding 200 is located in the wire passing groove 300b.

[0095] According to the fourth aspect of the present application, a linear motor is provided, including the stator 10 as above.

[0096] This linear motor includes the above-mentioned stator 10, and thus has all the beneficial effects of the above-mentioned stator 10, which will not be elaborated here.

[0097] According to the fifth aspect of the present application, an actuator (not shown in the figure) is provided, including a first component and a second component. The first component and the second component move relative to each other along the axial direction of the actuator. One of the first component and the second component includes the winding as above, and the other of the first component and the second component includes a permanent magnet component.

[0098] The actuator in the present application includes the winding as above, and has all the beneficial effects of the above-mentioned winding, which will not be elaborated here.

[0099] In some embodiments, one of the first component and the second component is adapted to be connected to the vehicle body, and the other of the first component and the second component is adapted to be connected to the wheel.

[0100] In some embodiments, the first component is a mover component, the second component is a stator component, and the stator component includes the stator component as above.

[0101] According to the sixth aspect of the present application, a suspension system is provided, including the actuator as above.

[0102] The suspension system in this application includes an actuator as described above and has all the beneficial effects of the actuator as described above, which will not be elaborated here.

[0103] According to the seventh aspect of this application, referring to Figure 6 , a vehicle 1 is provided, including a coil as described above, or a winding as described above, or a stator as described above, or a linear motor as described above, or an actuator as described above, or a suspension system as described above.

[0104] The vehicle 1 in this application includes a coil as described above, or a winding as described above, or a stator assembly as described above, or a linear motor as described above, or an actuator as described above, or a suspension system as described above, and has all the beneficial effects of the coil 10 as described above, or the winding 200 as described above, or the stator as described above, or the linear motor as described above, or the actuator as described above, or the suspension system as described above, which will not be elaborated here.

[0105] The vehicle 1 can be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and this application does not make specific limitations thereto.

[0106] This application exemplarily describes the winding method of the coil:

[0107] Determine the total length of the cable according to the required length of a single coil 100. The two-layer coil 100 structure is wound in opposite directions starting from the middle section of the connecting part 130. The connecting part 130 is located inside the coil 100, and the current flows in the same direction after winding and forming. When the cable is wound to the outer side of the coil 100 in a spiral shape, the cable is bent axially as the wiring part 120, and the extending directions of the two wiring parts 120 in the axial direction are opposite.

[0108] This application exemplarily describes the winding method of the winding 200:

[0109] Form the first coil 100 according to the winding method of the above coil 100. Continue to determine the cable length required for the second coil 100, and wind in opposite directions starting from the connecting part 130 of the second coil 100 to form the second coil 100. Subsequently, wind the required number of coils 100 in sequence to form an integrated winding 200.

[0110] In the description of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "plural" means two or more unless otherwise specifically defined.

[0111] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0112] In the embodiments, implementation manners and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0113] The above are only the preferred embodiments of the present application, and do not impose any formal restrictions on the present application. However, any simple modifications, equivalent changes and decorations made to the above embodiments 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 coil, characterized in that: include: The coil portion is formed with a central space penetrating the coil portion along a penetrating direction; a connecting portion, used to connect two adjacent coil portions; Wherein, at least a portion of the connecting portion extends along an extension direction, and an angle formed by the penetration direction and the extension direction is defined as an extension angle; the value range of the extension angle includes greater than or equal to 0° and less than 90°.

2. The coil according to claim 1, wherein The connecting portion has: a first connecting end coupled to one of the adjacent coil portions; The second connecting end is connected to another adjacent coil portion.

3. The coil according to claim 1, wherein The connecting portion is integrally formed with the coil portion adjacent to the coil portion in the penetrating direction.

4. The coil according to claim 1, wherein The coil is formed by winding a cable.

5. The coil according to claim 1, wherein The cross-sectional shape of the coil is rectangular or circular.

6. The coil according to any one of claims 1 to 5, characterized in that The coil further comprises: A connection portion, used for connecting two adjacent coils; The projections of the two different connecting portions in the penetration direction at least partially overlap.

7. The coil according to any one of claims 1 to 5, characterized in that The coil further comprises: A connection portion, used for connecting two adjacent coils; The projections of the two different connecting portions in the penetration direction are spaced apart.

8. A winding, characterized in that: Comprising the coil according to any one of claims 1 to 7; a plurality of the coils are arranged at intervals in the penetration direction, and two adjacent coils are connected by a connection portion.

9. The winding according to claim 8, characterized in that Projections of the plurality of connection portions of the winding in the extending direction at least partially overlap.

10. The winding according to claim 8, characterized in that The plurality of connection portions of the winding are arranged at intervals along a projection contour of the winding in the extending direction.

11. A stator, characterized in that: include: The winding according to any one of claims 8 to 10; The stator core has a plurality of receiving slots spaced apart along the penetrating direction; Wherein, the coils of the winding are respectively arranged in the receiving grooves.

12. The stator according to claim 11, characterized in that The coils of different phase windings are arranged alternately.

13. The stator according to claim 11, characterized in that The stator also has: A wire groove extending along the penetration direction; At least a portion of the connection portion of the winding is located in the wire groove.

14. A linear motor, characterized in that: The stator comprises the stator according to any one of claims 11 to 13.

15. An actuator, characterized in that: The actuator comprises a first component and a second component, wherein the first component and the second component move relative to each other along the axial direction of the actuator, one of the first component and the second component comprises the winding as described in any one of claims 8 to 10, and the other of the first component and the second component comprises a permanent magnet component.

16. The actuator according to claim 15, characterized in that One of the first and second components is adapted to be connected to a vehicle body, and the other of the first and second components is adapted to be connected to a wheel.

17. The actuator according to claim 16, characterized in that The first component is a movable component, the second component is a stator component, and the stator component includes the stator according to any one of claims 11 to 13.

18. A suspension system, characterized in that: Comprising an actuator according to any one of claims 15 to 17.

19. A vehicle, characterized in that: Comprising the linear motor according to claim 14 or the suspension system according to claim 18.

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