Flat wire winding, motor and vehicle

Abstract

The utility model provides a flat wire winding, a motor and a vehicle, the flat wire winding is wound in a plurality of motor slots arranged in an array of the motor, the flat wire winding comprises a plurality of circles of winding structures, each circle of winding structure comprises a plurality of coil structures, each coil structure comprises two conductor edges, and the two conductor edges are respectively arranged in different motor slots in a penetrating manner. The two conductor edges of each coil structure are arranged in a manner of crossing two adjacent layers in the motor slot, the spans of the coil structures of the same circle are the same, and the distance between the two conductor edges of the coil structure of each circle of winding structure is gradually reduced from the outer circle to the inner circle of the winding structure. According to the flat wire winding, the motor and the vehicle, the whole types and models of the coils in the flat wire winding are few, the manufacturing cost can be reduced, the wire inserting process is simplified, and the production takt is accelerated.

Description

Technical Field

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

[0002] In new energy vehicles, flat wire motors are usually used for driving. The flat wire motors include a plurality of motor slots arranged along the circumference thereof, and each motor slot is provided with a plurality of layers of conductors.

[0003] At present, the number of conductor layers in the motor slot is usually an even number, and the windings between the layers are different. Different types of windings such as I-type windings and U-type windings are used. In addition, according to the design of the motor, the size and structure of the windings in the same layer will also be different. For example, when a U-type winding is used, the U-type winding will include a conventional winding and a jumper winding. Winding coils of various types and sizes will increase the manufacturing cost, increase the difficulty of the wire insertion process, and affect the production cycle. Utility Model Content

[0004] The flat wire winding, motor and vehicle provided by the present application have fewer types and models of coils in the flat wire winding, which can reduce manufacturing costs, simplify the wire insertion process, and speed up production time.

[0005] The present application provides a flat wire winding, which is wound in multiple array-arranged motor slots of a motor, the flat wire winding includes a multi-turn winding structure, each turn of the winding structure includes multiple coil structures, the coil structure includes two conductor sides, the two conductor sides are respectively passed through different motor slots, the two conductor sides of each coil structure are arranged across two adjacent layers in the motor slot, the span of the coil structure of the same turn is the same, and the spacing between the two conductor sides of the coil structure of each turn of the winding structure is gradually reduced from the outer turn to the inner turn of the winding structure.

[0006] As for the flat wire winding as above, the spans of the coil structures of the multi-turn winding structure are all set to be the same, and the number of coil structures in one turn is set to be equal to the number of motor slots.

[0007] As above, the flat wire winding includes a four-turn winding structure, each motor slot is arranged with an eight-layer coil structure, and the multiple coil structures of each turn winding structure include multiple first coils and multiple second coils. In the same turn winding structure, the multiple first coils are electrically connected in sequence, and the multiple second coils are electrically connected in sequence.

[0008] As for the flat wire winding as above, along the radial direction of the motor, the flat wire winding includes a hairpin end and a wire outlet end which are arranged opposite to each other, and at the hairpin end, different turns of the winding structures are arranged independently.

[0009] As above, the flat wire winding, wherein part of the coil structure includes two welding parts arranged at the output end, the two welding parts are respectively passed through two different motor slots and extend out of the motor slots, and the coil structure is electrically connected to the coil structure of the same circle winding structure or the coil structure of the adjacent circle winding structure through the welding parts.

[0010] As shown in the flat wire winding above, the partial coil structure of the innermost winding structure includes a welding portion and a wire outlet portion, and the wire outlet portions of multiple coil structures are sequentially arranged in adjacent motor slots. The length of the wire outlet portion is greater than the length of the welding portion, and the wire outlet portion is used to connect to external electrical equipment.

[0011] As in the flat wire winding above, the two welding parts of the coil structure are respectively arranged in two adjacent layers of the motor slot. In one circle of the winding structure, the welding parts of multiple coil structures arranged in the same layer are twisted in the same direction, and the welding parts of multiple coil structures arranged in adjacent layers are twisted in opposite directions.

[0012] In the above flat wire winding, in the welding parts of the same layer of the winding structure of the outermost circle, a plurality of welding parts are arranged in groups of two, and the twisting distances of two adjacent welding parts in a group are different.

[0013] On the other hand, the present application further provides a motor, wherein the motor comprises a plurality of motor slots and the above-mentioned flat wire winding, and the flat wire winding is wound in the plurality of motor slots.

[0014] On the other hand, the present application also provides a vehicle, wherein the vehicle includes the above-mentioned motor.

[0015] The flat wire winding of the present application is wound in multiple array-arranged motor slots of the motor. The flat wire winding includes a multi-turn winding structure, and each turn of the winding structure includes multiple coil structures. From the outer turn to the inner turn, the spacing between the two conductor sides of the coil structure in each turn gradually decreases, and the span of the coil structure in the same turn is the same. Therefore, it is only necessary to design the coil structure of each turn separately, and the coil structure of the same turn is designed to have the same overall size. The types of coil structures designed in this way are equal to the number of turns, so that the overall types and models of the coil structures are relatively small, so that there is no need to perform multiple types of complex designs on the coil structure during the manufacturing process, and it is also more convenient to install fewer types of coil structures in the motor slot, thereby achieving the needs of reducing manufacturing costs, simplifying the wiring process and speeding up the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the connection of a unidirectional winding structure of a flat wire winding provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the structure inside the motor slot of the motor provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the overall structure of a motor provided in an embodiment of the present application;

[0019] Figure 4 A schematic structural diagram of the hairpin end of the flat wire winding provided in an embodiment of the present application.

[0020] Description of Figure Numbers:

[0021] 10. Winding structure; 20. Coil structure; 21. Welding part; 22. Outgoing wire part; 23. First coil; 24. Second coil; 25. Conductor edge; 30. Motor slot; 40. Hairpin end; 50. Outgoing wire end. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0024] In an embodiment of the present application, a flat wire winding is used in conjunction with a 12-pole 72-slot motor, and the number of pole-slot combinations of the motor is 2, but is not limited to the specific number of poles, number of slots, and number of pole-slot combinations in the embodiment of the present application, wherein the pole pitch of the 12-pole 72-slot motor is 6.

[0025] like Figures 1 to 4 As shown, an embodiment of the present application provides a flat wire winding, which is wound in multiple array-arranged motor slots 30 of the motor, and the flat wire winding includes a multi-turn winding structure 10, each turn of the winding structure 10 includes a plurality of coil structures 20, and the coil structure 20 includes two conductor edges 25, and the two conductor edges 25 are respectively passed through different motor slots 30, and the two conductor edges 25 of each coil structure 20 are arranged across two adjacent layers in the motor slot 30, and the span of the coil structures 20 of the same turn is the same, and along the outer turn to the inner turn of the winding structure 10, the distance between the two conductor edges 25 of the coil structure 20 of each turn of the winding structure 10 is gradually reduced.

[0026] It should be noted that each coil structure 20 includes two conductor edges 25 arranged at intervals. When the coil structure 20 is assembled in the motor slot 30 of the motor, the two conductor edges 25 are arranged across multiple motor slots 30, and the number of motor slots 30 spanned by the two conductor edges 25 is the span of the coil structure 20; in the circumferentially arranged motor slots 30, each motor slot 30 can accommodate multiple conductor edges 25, and the multiple conductor edges 25 are stacked in the motor slot 30 along the radial direction of the motor, so the two conductor edges 25 of each coil structure 20 are respectively arranged in adjacent layers in different motor slots 30, that is, one of the conductor edges 25 is arranged in the first layer of the first motor slot 30, and the other conductor edge 25 is arranged in the second layer of the seventh motor slot 30.

[0027] In specific implementation, the flat wire winding of the embodiment of the present application is wound in multiple array-arranged motor slots 30 of the motor, and the flat wire winding includes a multi-turn winding structure 10, each turn of the winding structure 10 includes a plurality of coil structures 20, and the spacing between the two conductor edges 25 of the coil structure 20 in each turn gradually decreases from the outer turn to the inner turn, and the span of the coil structure 20 in the same turn is the same, so it is only necessary to design the coil structure 20 of each turn separately, and the coil structure 20 of the same turn is designed to have the same overall size. The type of coil structure 20 designed in this way is equal to the number of turns, so that the overall types and models of the coil structure 20 are relatively small, so that there is no need to perform a variety of complex designs on the coil structure 20 during the manufacturing process, and it is also more convenient to install a fewer type of coil structure 20 in the motor slot 30, thereby achieving the needs of reducing manufacturing costs, simplifying the wiring process and speeding up the production cycle.

[0028] like Figure 1 and Figure 3 As shown, in the flat wire winding of the embodiment of the present application, the spans of the coil structures 20 of the multi-turn winding structure 10 are all arranged in the same manner, and the number of the coil structures 20 in one turn is arranged to be equal to the number of the motor slots 30 .

[0029] In specific implementation, the spans of the coil structures 20 of the multi-turn winding structure 10 are all the same, and during the design and production process, only the size design of the coil structures 20 of the winding structures 10 with different turns needs to be considered, which simplifies the design and production, thereby achieving the needs of reducing manufacturing costs, simplifying the wire insertion process and speeding up the production cycle; the setting that the number of coil structures 20 in one turn is equal to the number of motor slots 30 satisfies the setting that each coil structure 20 of one turn of the winding structure 10 spans two adjacent layers in the motor slot 30, forming a complete even-layer flat wire winding structure.

[0030] like Figure 1 and Figure 2As shown, the flat wire winding of the embodiment of the present application includes a four-turn winding structure 10, each motor slot 30 is arranged with an eight-layer coil structure 20, and the multiple coil structures 20 of each turn winding structure 10 include multiple first coils 23 and multiple second coils 24. In the same turn winding structure 10, the multiple first coils 23 are electrically connected in sequence, and the multiple second coils 24 are electrically connected in sequence.

[0031] In specific implementation, the multiple coil structures 20 are divided into multiple first coils 23 and multiple second coils 24 of equal number, which can meet the requirement that the pole slot matching number of the motor in the embodiment of the present application is 2. Among them, in the same circle winding structure 10, the setting of multiple first coils 23 electrically connected in sequence and the setting of multiple second coils 24 electrically connected in sequence can form a complete current path inside the motor, thereby realizing the normal operation of the motor.

[0032] like Figure 3 and Figure 4 As shown, the flat wire winding of the embodiment of the present application includes a hairpin end 40 and a wire outlet end 50 that are relatively arranged along the radial direction of the motor, and at the hairpin end 40, different turns of the winding structures 10 are independently arranged.

[0033] During specific implementation, at the hairpin end 40, the two conductor sides 25 of each coil structure 20 in different slots are connected by a connecting wire, and observed from the hairpin end 40, the different circle winding structures 10 are independently arranged, thereby avoiding radial connection of different circle winding structures 10, thereby avoiding contact and electrical connection between the coil structures 20 of different circle winding structures 10, thereby ensuring that the motor can work normally.

[0034] like Figures 1 to 4 As shown, the flat wire winding of the embodiment of the present application, wherein a part of the coil structure 20 includes two welding portions 21 arranged at the output terminal 50, the two welding portions 21 are respectively penetrated into two different motor slots 30 and extend out of the motor slots 30, and the coil structure 20 is electrically connected to the coil structure 20 of the same circle winding structure 10 or the coil structure 20 of the adjacent circle winding structure 10 through the welding portions 21.

[0035] During specific implementation, the two welding parts 21 of the coil structure 20 are respectively connected to the two conductor edges 25, and the coil structure 20 of the same-turn winding structure 10 is electrically connected through the welding part 21 to form a complete loop of one-turn winding structure 10, and the coil structure 20 of the adjacent-turn winding structure 10 is electrically connected through the welding part 21 to form a complete loop of the multi-turn winding structure 10 of the entire motor.

[0036] Specifically, the welding parts 21 of the two coil structures 20 are stacked and connected by welding. The stacking connection method is suitable for flat wire windings, so that the connection between the welding parts 21 is more stable.

[0037] like Figures 1 to 4 As shown, the flat wire winding of the embodiment of the present application, wherein the partial coil structure 20 of the innermost circle winding structure 10 includes a welding portion 21 and a wire outlet portion 22, and the wire outlet portions 22 of multiple coil structures 20 are sequentially arranged in adjacent motor slots 30, the length of the wire outlet portion 22 is greater than the length of the welding portion 21, and the wire outlet portion 22 is used to connect external electrical equipment.

[0038] In a specific implementation, the wire outlet 22 is arranged on the innermost circle of the winding structure 10 with the smallest diameter, and the wire outlets 22 of multiple coil structures 20 are arranged in adjacent motor slots 30 in sequence, which can minimize the space occupied by the multiple wire outlets 22, and the structure is also the simplest, and will not affect the layout of other parts of the motor.

[0039] like Figure 3 As shown, in the flat wire winding of the embodiment of the present application, the two welding portions 21 of the coil structure 20 are respectively arranged in two adjacent layers of the motor slot 30. In one circle of the winding structure 10, the welding portions 21 of multiple coil structures 20 arranged in the same layer are twisted in the same direction, and the welding portions 21 of multiple coil structures 20 arranged in adjacent layers are twisted in opposite directions.

[0040] During specific implementation, in a circle winding structure 10, the welding portions 21 of multiple coil structures 20 arranged on the same layer are twisted in the same direction, which can facilitate the arrangement of the coil structures 20 in the motor slots 30 and avoid position conflicts between the welding portions 21 on the same layer; and the welding portions 21 of multiple coil structures 20 arranged on adjacent layers are twisted in opposite directions, which can facilitate the welding connection of the welding portions 21 of adjacent layers, thereby forming a complete current loop in the same circle winding structure 10.

[0041] like Figure 3 As shown, in the flat wire winding of the embodiment of the present application, in the welding parts 21 of the same layer of the winding structure 10 of the outermost circle, multiple welding parts 21 are arranged in groups of two, and the twisting distances of two adjacent welding parts 21 in a group are different.

[0042] In a specific implementation, the twisting distances of two adjacent welding portions 21 in a group of the outermost circle winding structure 10 are different, that is, the welding portion 21 of the first coil 23 and the welding portion 21 of the second coil 24 of the outermost circle winding structure 10 can form a double-layer reverse twist structure, and the welding portion 21 with a longer twisting distance can be radially arranged on the upper layer of the welding portion 21 with a shorter twisting distance of the flat wire winding. Such an arrangement can achieve voltage balance in the branches where the first coil 23 and the second coil 24 are located, and reduce the circulating current between the branches.

[0043] like Figures 1 to 4 As shown, an embodiment of the present application further provides a motor, wherein the motor includes a plurality of motor slots 30 and the above-mentioned flat wire winding, and the flat wire winding is wound in the plurality of motor slots 30 .

[0044] An embodiment of the present application also provides a vehicle, wherein the vehicle includes the above-mentioned motor.

[0045] In specific implementation, the vehicle of the embodiment of the present application includes a motor, the motor includes a flat wire winding, the flat wire winding is wound in a plurality of motor slots 30 arranged in an array of the motor, the flat wire winding includes a multi-turn winding structure 10, each turn of the winding structure 10 includes a plurality of coil structures 20, and the size of the coil structure 20 in each turn gradually decreases from the outer turn to the inner turn, and the span of the coil structure 20 in the same turn is the same, so it is only necessary to design the coil structure 20 of each turn separately, and the coil structure 20 of the same turn is designed to have the same overall size, so that the types of coil structures 20 designed in this way are equal to the number of turns, so that the overall types and models of the coil structures 20 are relatively small, so that there is no need to perform a variety of complex designs on the coil structure 20 during the manufacturing process, and it is also more convenient to install a fewer type of coil structures 20 in the motor slot 30, thereby achieving the needs of reducing manufacturing costs, simplifying the wiring process and speeding up the production cycle.

[0046] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A flat wire winding, characterized in that: The flat wire winding is wound in a plurality of motor slots (30) arranged in an array of the motor, the flat wire winding comprises a plurality of winding structures (10), each winding structure (10) comprises a plurality of coil structures (20), the coil structure (20) comprises two conductor edges (25), the two conductor edges (25) are respectively passed through different motor slots (30), the two conductor edges (25) of each coil structure (20) are arranged across two adjacent layers in the motor slot (30), the span of the coil structures (20) of the same turn is the same, and the spacing between the two conductor edges (25) of the coil structure (20) of each winding structure (10) is gradually reduced from the outer turn to the inner turn.

2. The flat wire winding according to claim 1, characterized in that: The spans of the coil structures (20) of the multiple turns of the winding structure (10) are all arranged to be the same, and the number of the coil structures (20) in one turn is arranged to be equal to the number of the motor slots (30).

3. The flat wire winding according to claim 1, characterized in that: The flat wire winding comprises four turns of the winding structure (10), each of the motor slots (30) is arranged with eight layers of the coil structure (20), the multiple coil structures (20) of each turn of the winding structure (10) comprise multiple first coils (23) and multiple second coils (24), and in the same turn of the winding structure (10), the multiple first coils (23) are arranged to be electrically connected in sequence, and the multiple second coils (24) are arranged to be electrically connected in sequence.

4. The flat wire winding according to claim 1, characterized in that: Along the radial direction of the motor, the flat wire winding comprises a hairpin end (40) and an outlet end (50) which are arranged opposite to each other, and at the hairpin end (40), different turns of the winding structure (10) are arranged independently.

5. The flat wire winding according to claim 4, characterized in that: Part of the coil structure (20) comprises two welding portions (21) arranged at the outlet end (50), the two welding portions (21) respectively penetrate into two different motor slots (30) and extend out of the motor slots (30), and the coil structure (20) is electrically connected to the coil structure (20) of the same circle of the winding structure (10) or the coil structure (20) of the adjacent circle of the winding structure (10) through the welding portions (21).

6. The flat wire winding according to claim 5, characterized in that: The coil structure (20) of the innermost winding structure (10) includes a welding portion (21) and a wire outlet portion (22), and the wire outlet portions (22) of multiple coil structures (20) are sequentially arranged in adjacent motor slots (30), the length of the wire outlet portion (22) is greater than the length of the welding portion (21), and the wire outlet portion (22) is used to connect to external electrical equipment.

7. The flat wire winding according to claim 6, characterized in that: The two welding portions (21) of the coil structure (20) are respectively arranged in two adjacent layers of the motor slot (30); in one circle of the winding structure (10), the welding portions (21) of the plurality of coil structures (20) arranged in the same layer are twisted in the same direction, and the welding portions (21) of the plurality of coil structures (20) arranged in adjacent layers are twisted in opposite directions.

8. The flat wire winding according to claim 7, characterized in that: In the welding parts (21) of the same layer of the winding structure (10) of the outermost circle, a plurality of welding parts (21) are arranged in groups of two, and the twisting distances of two adjacent welding parts (21) in a group are different.

9. A motor, characterized in that: The motor comprises a plurality of motor slots (30) and a flat wire winding according to any one of claims 1 to 8, wherein the flat wire winding is wound in the plurality of motor slots (30).

10. A vehicle, characterized in that: The vehicle comprises an electric machine as claimed in claim 9.

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