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

Abstract

A vehicle, comprising a coil, a winding, a stator, a linear motor, an actuator, and a suspension device. The coil comprises: coil portions, in each of which is formed a central space passing through the coil portion in the direction of penetration; and connecting portions, each used for connecting two adjacent coil portions. At least part of each connecting portion extends in the direction of extension, and an included angle formed between the direction of penetration and the direction of extension is defined as an extension angle. The value of the extension angle ranges from 0° to 90°.

Description

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

[0001] The present application claims priority to the Chinese patent publication with the publication number 202422432566.3, the title of "Coil, winding, stator, linear motor, actuator, suspension device and vehicle", which was filed on September 30, 2024, in the China Patent Office, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to, but is not limited to, the motor technical field, in particular to a coil, winding, stator, linear motor, actuator, suspension device and vehicle. BACKGROUND

[0003] The linear motor is a kind of electric power transmission device that directly converts electric energy into linear motion mechanical energy without any intermediate conversion mechanism.

[0004] The coil of the linear motor generally includes a plurality of coil parts wound, in order to realize the transition connection of adjacent coil parts, part of the cable is bent to form the connection structure of adjacent coil parts.

[0005] The connection structure in the related art cannot take into account the uniformity of the magnetic field and the winding difficulty of the coil. SUMMARY

[0006] The embodiments of the present application provide a coil that takes into account the uniformity of the magnetic field and the winding difficulty to at least partially solve the above technical problems.

[0007] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a coil is provided, comprising:

[0008] A coil part is formed with a central space penetrating through the coil part along a penetrating direction;

[0009] A connection part is used to connect two adjacent coil parts;

[0010] Wherein, at least part of the connection part extends along an extension direction, the included angle between the penetrating 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°.

[0011] In some embodiments of the application, the connection part has:

[0012] A first connection end is combined with one of the adjacent coil parts;

[0013] A second connection end is combined with the other adjacent coil part.

[0014] In some embodiments of the application, the connection portion is integrally formed with the coil portion adjacent in the through direction.

[0015] In some embodiments of the application, the coil is wound by a cable.

[0016] In some embodiments of the application, the cross-sectional shape of the cable is rectangular or circular.

[0017] In some embodiments of the application, the coil further comprises:

[0018] a connection portion for connecting two adjacent coils;

[0019] wherein the projections of two different connection portions in the through direction at least partially overlap.

[0020] In some embodiments of the application, the coil further comprises:

[0021] a connection portion for connecting two adjacent coils;

[0022] wherein the projections of two different connection portions in the through direction are spaced apart.

[0023] According to a second aspect of the application, there is also provided a winding comprising the coil as described above; a plurality of the coils are spaced apart in the through direction, and two adjacent coils are connected by a connection portion.

[0024] In some embodiments of the application, the projections of a plurality of connection portions of the winding in the extension direction at least partially coincide.

[0025] In some embodiments of the application, the projections of a plurality of connection portions of the winding in the extension direction are spaced apart in profile.

[0026] According to a third aspect of the application, there is also provided a stator comprising:

[0027] the winding as described above or the coil as described above;

[0028] a stator core having a plurality of accommodation slots spaced apart in the through direction;

[0029] wherein the coils of the winding are respectively arranged in the accommodation slots.

[0030] In some embodiments of the application, the coils of different phase windings are alternately and spaced apart.

[0031] In some embodiments of the application, the stator further has:

[0032] a wire passing slot extending in the through direction;

[0033] At least part of the connection portion of the winding is located in the wire slot.

[0034] According to a fourth aspect of the present application, there is also provided a linear motor comprising the stator as described above or the winding as described above or the coil as described above.

[0035] According to a fifth aspect of the present application, there is also provided an actuator comprising a first component and a second component, the first component and the second component being relatively movable along an axial direction of the actuator, one of the first component and the second component comprising the winding as described above, and the other of the first component and the second component comprising a permanent magnet component.

[0036] In some embodiments of the application, one of the first component and the second component is adapted to be connected to a vehicle body, and the other of the first component and the second component is adapted to be connected to a vehicle wheel.

[0037] In some embodiments of the application, the first component is a mover component, and the second component is a stator component, the stator component comprising the stator as described above.

[0038] According to a sixth aspect of the present application, there is also provided a suspension device comprising the actuator as described above or the winding as described above or the coil as described above or the stator as described above or the linear motor.

[0039] According to a seventh aspect of the present application, there is also provided a vehicle comprising the linear motor or the suspension device as described above.

[0040] The present application has the beneficial effect of providing a coil, a winding, a stator, a linear motor, an actuator, a suspension device and a vehicle which take into account both the uniformity of the magnetic field and the difficulty of winding by limiting the extension direction of the connection portion.

[0041] More specifically, some embodiments of the present application can have the following specific beneficial effects:

[0042] Considering the inclination of the connection portion relative to the coil portion, it will have an impact on the uniformity of the magnetic field generated by the coil portion and the difficulty of winding. When the extension angle is too large, the length of the inclined portion of the connection portion is longer, the impact on the uniformity of the magnetic field is greater, but the difficulty of bending is reduced, thereby reducing the difficulty of winding the coil. When the extension angle is too small, the length of the connection portion is also small, which is conducive to forming a uniform magnetic field, but the winding difficulty is greater due to stress and bending resistance. The present application forms a transition connection between adjacent two coil portions by the connection portion, and limits the extension angle between the extension direction of the connection portion and the penetration direction of the central space to be 0° to 90°, which can ensure the uniformity of the magnetic field formed by the coil while reducing the winding difficulty of the coil.

[0043] Other features and advantages of the present application will be described in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some of the embodiments of the present application, and all other drawings obtained by those skilled in the art without creative effort based on these drawings also belong to the protection scope of the present application.

[0045] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0046] Fig. 1 is a schematic diagram of the overall structure of a coil provided in an exemplary embodiment of the present application;

[0047] Fig. 2 is a schematic diagram of the expansion of a connecting portion in a coil provided in an exemplary embodiment of the present application;

[0048] Fig. 3 is a schematic diagram of the overall structure of a winding provided in an exemplary embodiment of the present application;

[0049] Fig. 4 is a schematic diagram of the overall structure of a stator provided in an exemplary embodiment of the present application;

[0050] Fig. 5 is a schematic diagram of the structure of a portion of a stator provided in an exemplary embodiment of the present application;

[0051] Fig. 6 is a schematic diagram of the overall structure of a vehicle provided in an exemplary embodiment of the present application.

[0052] Reference numerals: 100, coil; 110, coil portion; 110a, central space; 120, wiring portion; 130, connecting portion; 131, first connecting end; 132, second connecting end; C1, central axis; 200, winding; 10, stator; 300, stator core; 300a, accommodating groove; 300b, wire passing groove; 1, vehicle. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort also belong to the protection scope of the present application.

[0054] Referring to FIG. 1 and FIG. 2, and in the present application, the axial 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.

[0055] According to a first aspect of the present application, referring to FIG. 1 to FIG. 4, the present application provides a coil 100, comprising a coil part 110 and a connecting part 130.

[0056] The coil part 110 is formed with a central space 110a penetrating the coil part 110 along the penetrating direction, and 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 between the penetrating 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°.

[0057] It can be understood that the connecting part 130 can extend in a spiral shape, and the extension direction can be the tangent direction of the connecting part 130. The connecting part 130 smoothly connects two coil parts 110 to form an interlayer transition.

[0058] 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 considered.

[0059] 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 is longer, the influence on the uniformity of the magnetic field is greater, but the bending difficulty is reduced, thereby reducing the winding difficulty of the coil 100. When the extension angle α is too small, the length of the connecting part 130 is also small, which is beneficial to form a uniform magnetic field, but it will cause greater winding difficulty due to stress and bending resistance.

[0060] As a preferred solution, the value range of the extension angle α includes 50° to 90°.

[0061] Through the above technical solution, the present application forms a transition connection between the two adjacent coil parts 110 through the connecting part 130, and limits the value range of the extension angle α between the extension direction of the connecting part 130 and the penetrating direction of the central space 110a to 50° to 90°. While ensuring the uniformity of the magnetic field formed by the coil 100, the winding difficulty of the coil 100 can be reduced.

[0062] Suitable increase of the extension angle a and decrease of the bending angle of the connecting portion 130 relative to the coil portion 110 make the connecting portion 130 and the coil portion 110 achieve a relatively gentle transition, effectively disperse the stress distribution of the connecting portion 130, significantly reduce the risk of fracture caused by stress concentration, improve the durability of the coil 100, and the use of a larger angle of the extension angle a for shaping is beneficial to process manufacturing and is not prone to wire twisting damage or increased process difficulty. At the same time, it avoids the risk of damage to the insulation layer of the enameled wire due to the dense bending points of the connecting portion 130, and destroys the insulation and is not conducive to production and use.

[0063] As a further preferred solution, the extension angle a is in the range of 60° to 90°.

[0064] 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, including various winding modes combined by clockwise and counterclockwise winding.

[0065] 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 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 in the central space 110a and the outer periphery of the coil portion 110.

[0066] In some embodiments, with reference to FIGS. 1 and 2, the connecting portion 130 has a first connecting end 131 and a second connecting end 132.

[0067] The first connecting end 131 is combined with one of the adjacent coil portions 110; and the second connecting end 132 is combined with the other adjacent coil portion 110.

[0068] In some embodiments, the connecting portion 130 is integrally formed with the adjacent coil portion 110 in the penetrating direction.

[0069] In some embodiments, with reference to FIGS. 1, 4 and 5, the coil 100 can be wound from a wire.

[0070] By winding the coil 100 from a wire, the welding points required for the connection of the lead wires between the mutually connected coils 100 can be omitted, and the welding points between the coil portions 110 clamped by two coil portions 110 when the number of coil portions 110 of the coil 100 is greater than 1 can be omitted, thereby eliminating the welding process and avoiding the risk of insulation and voltage failure at the welding points caused by the welding process.

[0071] In some embodiments, the cross-sectional shape of the wire is rectangular or circular.

[0072] In some embodiments, referring to FIGS. 1-3, the coil 100 further comprises a wiring portion 120.

[0073] The wiring portion 120 is used to connect two adjacent coils 100.

[0074] As an optional solution, the projections of the two different wiring portions 120 in the through direction at least partially overlap.

[0075] By arranging the projections of the two different wiring portions 120 to overlap in the through direction, i.e., the axial direction of the central axis C1, the wiring portions 120 can be spatially saved in the axial direction, avoiding multiple slotting of the stator core 300, reducing the cost of additional slotting of the core, reducing the air gap that must be reserved due to the slotting of the cable, and reducing the abrupt change of the cable, thereby improving the lifting force of the motor.

[0076] As another optional solution, the projections of the two different wiring portions 120 in the through direction are arranged to be spaced apart.

[0077] By arranging the projections of the two different wiring portions 120 to be spaced apart in the through direction, i.e., the axial direction of the central axis C1, the wiring portions 120 can be arranged at any position of the coil 100 during winding, which makes the winding more diverse and convenient, and avoids the problem of coil 100 not being connected in series due to incorrect arrangement of the wiring portion 120.

[0078] It should be noted that the arrangement of the projections of the two different wiring portions 120 to be spaced apart in the present application means that the orthogonal projection of the wiring portion 120 along the central axis does not overlap, i.e., along the circumferential direction of the central axis C1, the two different wiring portions 120 are located at different positions in the circumferential direction, and along the axial direction of the central axis C1, the two different wiring portions 120 are located at different positions in the axial direction.

[0079] According to a second aspect of the present application, referring to FIG. 3, a winding 200 is provided, comprising the coil 100.

[0080] The winding 200 comprises the coil 100 as described above, and thus has all the beneficial effects of the coil 100 described above, which will not be repeated here.

[0081] The plurality of coils 100 are arranged to be spaced apart in the through direction, and two adjacent coils 100 are connected by the wiring portion 120, so that the coils 110 connected in series by the wiring portion 120 form a same-phase coil 100.

[0082] In some embodiments, the projections of the plurality of wiring portions of the winding 200 in the extension direction at least partially overlap.

[0083] In some embodiments, the projections of the plurality of connection portions of the winding 200 in the extension direction are arranged at intervals.

[0084] According to a third aspect of the present application, with reference to Figs. 4 and 5, a stator 10 is provided, comprising a stator core 300 and a winding 200 or coil 100.

[0085] The stator core 300 has a plurality of accommodation slots 300a arranged at intervals along the through direction; the coils 100 of the winding 200 are arranged in the accommodation slots 300a respectively.

[0086] In some embodiments, the coils 100 of different phase windings 200 are arranged at intervals alternately.

[0087] In some embodiments, the coils 100 of the winding 200 in the same accommodation slot 300a are arranged in the same phase. In this way, each accommodation slot 300a can be provided with only one coil 100, compared with the form that different phase coils 100 are placed in the same accommodation slot 300a, so that there is a larger air gap between adjacent coils 100 in the axial direction of the stator 10, and the insulation can be completed by the paint film itself, without the need to use interlayer insulation, thereby reducing the space occupied by the interlayer insulation, and thus improving the space utilization of the stator core 300.

[0088] In some embodiments, the stator further has a wire passing slot 300b. The wire passing slot 300b extends along the through direction. At least part of the connection portion 120 of the winding 200 is located in the wire passing slot 300b.

[0089] According to a fourth aspect of the present application, a linear motor is provided, comprising the stator 10 or the stator core 300 and the winding 200 or the coil 100 as above.

[0090] The linear motor comprises the stator 10 as above, and thus has all the beneficial effects of the stator 10 as above, which will not be repeated here.

[0091] The linear motor comprises the stator core 300 as above, and thus has all the beneficial effects of the stator core 300 as above, which will not be repeated here.

[0092] The linear motor comprises the winding 200 as above, and thus has all the beneficial effects of the winding 200 as above, which will not be repeated here.

[0093] The linear motor comprises the coil 100 as above, and thus has all the beneficial effects of the coil 100 as above, which will not be repeated here.

[0094] According to a fifth aspect of the present application, there is provided an actuator (not shown in the figures) comprising a first assembly and a second assembly, the first assembly and the second assembly being movable relative to each other in an axial direction of the actuator, one of the first assembly and the second assembly comprising a winding as above, the other of the first assembly and the second assembly comprising a permanent magnet assembly.

[0095] The actuator in the present application comprises a winding as above, having all the advantageous effects of a winding as above, which will not be repeated here.

[0096] In some embodiments, one of the first assembly and the second assembly is adapted to be connected to a vehicle body, the other of the first assembly and the second assembly being adapted to be connected to a vehicle wheel.

[0097] In some embodiments, the first assembly is a mover assembly, the second assembly is a stator assembly, the stator assembly comprising a stator assembly as above.

[0098] According to a sixth aspect of the present application, there is provided a suspension arrangement comprising an actuator as above or a winding 200 as above or a winding 200 as above or a winding 200 as above or a linear motor as above.

[0099] The suspension arrangement in the present application comprises an actuator as above, having all the advantageous effects of an actuator as above, which will not be repeated here.

[0100] The suspension arrangement in the present application comprises a winding 200 as above, having all the advantageous effects of a winding 200 as above, which will not be repeated here.

[0101] The suspension arrangement in the present application comprises a winding 200 as above, having all the advantageous effects of a winding 200 as above, which will not be repeated here.

[0102] The suspension arrangement in the present application comprises a winding 200 as above, having all the advantageous effects of a winding 200 as above, which will not be repeated here.

[0103] The suspension arrangement in the present application comprises a linear motor as above, having all the advantageous effects of a linear motor as above, which will not be repeated here.

[0104] According to a seventh aspect of the present application, there is provided a vehicle 1 comprising a coil as above or a winding as above or a stator as above or a linear motor as above or an actuator as above or a suspension arrangement as above, with reference to figure 6.

[0105] The vehicle 1 in the present application comprises the coil 100 as above or the winding 200 as above or the stator assembly as above or the linear motor as above or the actuator as above or the suspension device as above, and has all the beneficial effects of the coil 100 as above or the winding 200 as above or the stator as above or the linear motor as above or the actuator as above or the suspension device as above, which will not be repeated here.

[0106] The vehicle 1 can be a fuel automobile, a plug-in hybrid electric vehicle or a new energy vehicle, etc., which is not specifically limited in the present application.

[0107] The present application exemplarily describes the winding method of the coil:

[0108] The total length of the cable is determined according to the required length of the single coil 100, and the two-layer coil 100 structure is wound in opposite directions from the middle section of the connecting part 130 as the winding starting point. 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 outside of the coil 100 spiral, the cable is bent to the axial direction as the connecting part 120, and the extension directions of the two connecting parts 120 in the axial direction are opposite.

[0109] The present application exemplarily describes the winding method of the winding 200:

[0110] The first coil 100 is formed according to the winding method of the coil 100 as above, and the length of the cable required for the second coil 100 is determined, and the connecting part 130 of the second coil 100 is taken as the winding starting point and wound in opposite directions to form the second coil 100. Then, the required number of coils 100 are wound in turn to form an integrated winding 200.

[0111] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0112] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0113] The embodiments, implementation manners and related technical features in the present application can be combined or replaced with each other without conflict.

[0114] The above are only the preferred embodiments of the present application, and do not limit the present application in any form, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution of the present application and according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A coil (100) comprising: a coil portion (110) formed with a central space (110a) extending through the coil portion (110) in a through direction; a connecting portion (130) for connecting two adjacent coil portions (110); wherein at least part of the connecting portion (130) extends in an extension direction, and an angle between the through direction and the extension direction is defined as an extension angle, and the extension angle is greater than or equal to 0° and less than 90°.

2. The coil (100) according to claim 1, wherein the connecting portion (130) has: a first connecting end (131) combined with one of the adjacent coil portions (110); and a second connecting end (132) combined with the other of the adjacent coil portions (110).

3. The coil (100) according to claim 1 or 2, wherein the connecting portion (130) is integrally formed with the adjacent coil portions (110) in the through direction.

4. The coil (100) according to any one of claims 1 to 3, wherein the coil (100) is wound by a cable.

5. The coil (100) according to claim 4, wherein a cross-sectional shape of the cable is rectangular or circular.

6. The coil (100) according to any one of claims 1 to 5, wherein the coil (100) further comprises: a connecting portion (120) for connecting two adjacent coils (100); wherein projections of different connecting portions (120) in the through direction at least partially overlap.

7. The coil (100) according to any one of claims 1 to 6, wherein the coil (100) further comprises: a connecting portion (120) for connecting two adjacent coils (100); wherein projections of different connecting portions (120) in the through direction are spaced apart.

8. A winding (200) comprising a coil (100) as claimed in any one of the claims 1 to 7; wherein, a plurality of the coils (100) are spaced apart in the through direction, and two adjacent coils (100) are connected by connecting portions (120).

9. The winding (200) of claim 8, wherein, projections of a plurality of connecting portions (120) of the winding (200) in the extension direction at least partially coincide.

10. The winding (200) according to claim 8 or 9, wherein projections of a plurality of connecting portions (120) of the winding (200) in the extension direction are spaced apart in profile. 11.A stator (10) comprising: the winding (200) according to any one of claims 8 to 10; and a stator core (300) having a plurality of accommodation slots (300a) spaced apart in a through direction; wherein the coils (100) of the winding (200) are respectively arranged in the accommodation slots (300a). the coils (100) of different phase windings (200) are alternately and spaced apart.

12. The stator (10) according to claim 11, wherein the stator (10) further has:

13. The stator (10) according to claim 11 or 12, wherein a wire passing slot (300b) extending in the through direction; at least part of the connecting portions (120) of the winding (200) is located in the wire passing slot (300b). 14.A linear motor comprising the coil (100) according to any one of claims 1 to 7, or the winding (200) according to any one of claims 8 to 10, or the stator (10) according to any one of claims 11 to 13. 15.An actuator comprising a first assembly and a second assembly, the first assembly and the second assembly being relatively movable in an axial direction of the actuator, one of the first assembly and the second assembly comprising the winding (200) according to any one of claims 8 to 10, and the other of the first assembly and the second assembly comprising a permanent magnet assembly. ​ 16. The actuator of claim 15, wherein, One of the first and second assemblies is adapted to connect to a vehicle body and the other of the first and second assemblies is adapted to connect to a vehicle wheel.

17. The actuator of claim 16, wherein, The first assembly is a mover assembly and the second assembly is a stator (10) assembly comprising a stator (10) as claimed in any one of claims 11 to 13.

18. A suspension arrangement wherein, A linear motor as claimed in claim 14 or an actuator as claimed in any one of claims 15 to 17 or a suspension device as claimed in claim 18.

19. A vehicle (1), wherein A linear motor as claimed in claim 14 or an actuator as claimed in any one of claims 15 to 17 or a suspension device as claimed in claim 18.

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