Winding structure, winding assembly, stator assembly, electric machine, drive system and vehicle

Abstract

The application relates to a winding structure, a winding assembly, a stator assembly, a motor, a driving system and a vehicle. The winding structure comprises a plurality of coils, and the plurality of coils are sequentially arranged along a ring-shaped track. Part of the adjacent coils are integrally arranged, and part of the adjacent coils are fixedly connected. In the embodiment of the application, part of the adjacent coils are integrally arranged, and part of the adjacent coils are fixedly connected, so that the plurality of coils in the winding structure do not need to be continuously wound, thereby reducing the size tolerance requirement when the winding structure is wound, and further reducing the processing difficulty.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a winding structure, winding assembly, stator assembly, motor, drive system and vehicle. Background Technology

[0002] The stator is an important component of motors such as generators and starters. The stator consists of three parts: the stator core, the stator windings, and the frame.

[0003] The stator winding method in related technologies has high dimensional tolerance requirements and is difficult to process. Utility Model Content

[0004] This application provides a winding structure, winding assembly, stator assembly, motor, drive system, and vehicle, which can reduce the dimensional tolerance requirements of the stator winding method and has lower processing difficulty, thereby at least partially solving the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a winding structure is provided, the winding structure comprising:

[0006] Multiple coils are arranged sequentially along a circular trajectory;

[0007] Some adjacent coils are integrated together, while others are fixedly connected.

[0008] In some embodiments, the winding structure further includes a first connection terminal and a second connection terminal;

[0009] The first connection terminal and the second connection terminal are located on the same coil or on different coils.

[0010] In some embodiments, each coil has multiple turns;

[0011] The first connection end and the second connection end are disposed on the same turn or different turns of any coil.

[0012] In some embodiments, each coil has multiple turns, and the first connection terminal and the second connection terminal are respectively disposed on the Nth turn and the Mth turn of different coils;

[0013] Where N is equal to M or N is not equal to M.

[0014] In some embodiments, among the plurality of coils, at least one coil includes a first sub-coil and a second sub-coil, the first sub-coil and the second sub-coil being electrically connected;

[0015] One of the first connection terminal and the second connection terminal is connected to the first sub-coil, and the other is connected to the second sub-coil.

[0016] In some embodiments, the first sub-coil includes a first portion, the second sub-coil includes a second portion, and the first portion and the second portion constitute one turn of the coil;

[0017] The first connecting end is connected to the first part, and the second connecting end is connected to the second part.

[0018] In some embodiments, the first connecting end is connected to the end of the first portion; and / or

[0019] The second connecting end is connected to the end of the second part.

[0020] In some embodiments, the plurality of coils includes:

[0021] The first coil includes a first sub-coil and a second coil; and

[0022] Second coil;

[0023] The number of turns of the second coil is equal to the sum of the number of turns of the first sub-coil and the second sub-coil; the first sub-coil is electrically connected to the second sub-coil through the second coil.

[0024] In some embodiments, along the radial direction of the circular trajectory, the first connection end and the second connection end are located outside the corresponding coil.

[0025] In some embodiments, the winding structure further includes:

[0026] At least one connecting part connects any two adjacent coils;

[0027] In particular, along the radial direction of the circular trajectory, the connecting part is located inside the coil.

[0028] In some embodiments, the connecting portion is continuously arranged; or

[0029] The connecting part includes a first sub-segment and a second sub-segment, which are respectively connected to two adjacent coils and are fixedly connected to each other.

[0030] In some embodiments, the coil includes:

[0031] At least one wire is wound in a first direction to form a coil, the first direction being perpendicular to the circular trajectory.

[0032] In some embodiments, at least two wires are provided, and the two wires are stacked in a first direction.

[0033] In some embodiments, in two integrally formed and adjacent coils, the stacking direction of a plurality of wires in one coil is opposite to the stacking direction of a plurality of wires in the other coil.

[0034] In some embodiments, multiple coils integrally formed are wound from at least one wire.

[0035] In some embodiments, the number of coils is A;

[0036] Where A is an even number and greater than zero, each coil is integrally set with one of its adjacent coils and stacked in opposite directions, and is fixedly connected to another adjacent coil.

[0037] In some embodiments, the coil includes a first end and a second end spaced apart in a first direction, the first direction being perpendicular to the circular trajectory;

[0038] In at least two adjacent coils, the first end of one coil is connected to the second end of the other coil.

[0039] According to a second aspect of this application, a winding assembly is provided, the winding assembly comprising:

[0040] Stator core; and

[0041] Multiple winding structures are set in the stator core, each winding structure belongs to a different phase, and each winding structure includes multiple coils;

[0042] In each winding structure, multiple coils are arranged sequentially along a circular trajectory;

[0043] In at least one winding structure, some adjacent coils are integrally arranged, and some adjacent coils are fixedly connected.

[0044] According to a third aspect of this application, a stator assembly is provided, the stator assembly including a winding structure or a winding assembly.

[0045] According to a fourth aspect of this application, an electric motor is provided, the motor including a winding structure or winding assembly or stator assembly.

[0046] According to a fifth aspect of this application, a drive system is provided, the drive system including a winding structure or stator assembly or motor.

[0047] According to a sixth aspect of this application, a vehicle is provided, the vehicle including a winding structure or stator assembly or motor or drive system.

[0048] The winding structure in this embodiment includes multiple coils arranged sequentially along a circular trajectory; wherein, some adjacent coils are integrally formed, and some adjacent coils are fixedly connected; in this embodiment, by setting some adjacent coils integrally formed and some adjacent coils fixedly connected, the multiple coils in the winding structure do not need to be continuously wound, thereby reducing the dimensional tolerance requirements when winding the winding structure and thus reducing the processing difficulty.

[0049] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0052] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the winding structure provided in the exemplary embodiments of this application;

[0053] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the winding structure provided in the exemplary embodiments of this application;

[0054] Figure 3 This is a schematic diagram of the overall structure of another embodiment of the winding structure provided in the exemplary embodiments of this application;

[0055] Figure 4 yes Figure 1 A schematic diagram of the overall structure of the intermediate coil;

[0056] Figure 5 yes Figure 1 A schematic diagram of the overall structure of the intermediate coil from another perspective;

[0057] Figure 6 yes Figure 2 A schematic diagram of the overall structure of the intermediate coil;

[0058] Figure 7 yes Figure 2 A schematic diagram of the overall structure of the intermediate coil from another perspective;

[0059] Figure 8 This is a partial overall schematic diagram of the stator assembly provided in an exemplary embodiment of this application.

[0060] Explanation of reference numerals in the attached figures:

[0061] 1000. Winding structure; 1. Coil; 11. First sub-coil; 12. Second sub-coil; 13. Connecting part; 131. First segment; 132. Second segment; 2. First connecting end; 3. Second connecting end; 5. Wire; 6. First end; 7. Second end;

[0062] 101. First coil; 102. Second coil. Detailed Implementation

[0063] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0064] This application proposes a winding structure. Figures 1 to 8 These are some embodiments of this application.

[0065] Please see Figures 1 to 3 In some embodiments of this application, the winding structure 1000 includes a plurality of coils 1, which are arranged sequentially along a circular trajectory; wherein, some adjacent coils 1 are integrally formed, and some adjacent coils 1 are fixedly connected.

[0066] The direction of extension of the circular trajectory is as follows: Figures 1 to 3 As indicated by the mark C, this direction is also the circumferential direction of the winding structure 1000.

[0067] In the technical solution of this application, by setting some adjacent coils 1 to be integrally set and some adjacent coils 1 to be fixedly connected, the multiple coils 1 in the winding structure 1000 do not need to be continuously wound, thereby reducing the dimensional tolerance requirements when the winding structure 1000 is wound, and thus reducing the processing difficulty.

[0068] Specifically, in related technologies, when all coils of a winding structure are formed by winding the same wire, the accumulated errors on each coil will lead to a large dimensional error in the resulting winding structure. Therefore, this type of winding structure requires large dimensional tolerances and is difficult to manufacture.

[0069] In this solution, by setting some coils 1 as an integral part and fixing the coils 1 together, the error between the two fixed coils 1 will not accumulate. Therefore, the winding structure 1000 will not have a large error, thereby reducing the dimensional tolerance requirements when winding the winding structure 1000 and thus reducing the processing difficulty.

[0070] It should be noted that the fixed connection referred to in this embodiment refers to a fixed connection method that does not accumulate errors, such as welding, bolt connection, bonding and other fixed connection methods.

[0071] The following explanation uses multiple coils 1 that are set up as a single unit as a coil group. Different coil groups have different errors. By connecting the coils 1 between two adjacent coil groups in a fixed manner, the errors between different coil groups can be eliminated.

[0072] Among them, two or more coils 1 can be set as one piece.

[0073] Similarly, one coil 1 can be fixedly connected to two adjacent coils 1.

[0074] It can be understood that since at least some of the coils 1 in the winding structure 1000 are integrally formed, the process steps for fixing two adjacent coils 1 can be reduced, thereby improving production efficiency.

[0075] In other words, the winding structure 1000 in this embodiment not only reduces the processing difficulty but also takes into account production efficiency.

[0076] In some embodiments of this application, two coils 1 are integrally formed to form a coil group, and multiple coil groups are fixedly connected to form a winding structure 1000; in this way, the assembly requirements between the winding structure 1000 and the stator core are reduced, and the assembly of the stator components inside the motor is easier.

[0077] In addition, please see Figure 3 Furthermore, adjacent coil groups can be spaced out.

[0078] It should be noted that if the winding structure 1000 has multiple fixedly connected coils 1, the fixing method between two adjacent coils 1 can be the same or different; the specific design can be made according to the actual production needs.

[0079] In some embodiments of this application, the winding structure 1000 further includes a first connection end 2 and a second connection end 3; the first connection end 2 and the second connection end 3 are disposed in the same coil 1 or in different coils 1; wherein, the first connection end 2 and the second connection end 3 can be used to connect an external power supply or an external controller, or to enable multiple winding structures 1000 to be interconnected to form a closed loop.

[0080] Please see Figures 1 to 2 In some embodiments of this application, the first connection end 2 and the second connection end 3 are located in the same coil 1.

[0081] Please see Figure 3 In some embodiments of this application, the first connection end 2 and the second connection end 3 are located in different coils 1.

[0082] In some embodiments of this application, each coil 1 has multiple turns; wherein, the first connecting end 2 and the second connecting end 3 are disposed on the same turn or different turns of any coil 1; in this embodiment, the first connecting end 2 and the second connecting end 3 can be disposed on any coil 1 of the winding structure 1000; when the first connecting end 2 and the second connecting end 3 are located in the same coil 1, the first connecting end 2 and the second connecting end 3 can be located on the same turn or different turns of the coil 1, which is not limited here, as long as it is ensured that the first connecting end 2 and the second connecting end 3 do not interfere with each other.

[0083] By placing the first connecting end 2 and the second connecting end 3 in the same coil 1, it is not necessary to design the first connecting end 2 and the second connecting end 3 on the remaining coil 1 in the winding structure 1000, which facilitates the production and processing of the winding structure 1000.

[0084] Wherein, coil 1 having multiple turns means that coil 1 is formed by winding wire 5 multiple times; wherein, one turn of coil 1 means that wire 5 is wound once.

[0085] In addition, each coil 1 has multiple turns, so that when the winding structure 1000 in the embodiments of this application is applied to a motor, it is ensured that the motor can generate sufficient magnetic field and electric potential during operation, thereby meeting the performance requirements of the motor.

[0086] In some embodiments of this application, the coil 1 is formed by winding multiple turns of wire 5 along the axial direction A of the winding structure 1000. That is, the wire 5 has a helical structure extending along the axial direction A to form a multi-turn coil 1.

[0087] In this embodiment, one turn of the coil 1 can be formed by either a continuous wire 5 or a discontinuous wire 5, and no limitation is made here.

[0088] Please see Figure 1 , Figure 4 and Figure 5 In some embodiments of this application, the first connection end 2 and the second connection end 3 are disposed on the same turn in the same coil 1.

[0089] Please see Figure 2 , Figure 6 and Figure 7 In some embodiments of this application, the first connection end 2 and the second connection end 3 are disposed on different turns of the same coil 1.

[0090] In some embodiments of this application, each coil 1 has multiple turns, and the first connecting end 2 and the second connecting end 3 are respectively disposed on the Nth turn and the Mth turn of different coils 1; wherein, N is equal to M or N is not equal to M; such a configuration is such that only one of the first connecting end 2 and the second connecting end 3 needs to be formed in a single coil 1 of the winding structure 1000, so as to facilitate the production and processing of the winding structure 1000.

[0091] In some embodiments of this application, the different coils have the same number of turns.

[0092] An example is given where two coils 1 have the same number of turns, and the first connection terminal 2 is located on the Nth turn of the corresponding coil 1, and the second connection terminal 3 is located on the Mth turn of the corresponding coil 1.

[0093] When the first connecting end 2 and the second connecting end 3 are located at the Nth and Mth turns of the two coils 1 respectively; if N equals M, the vertical distance between the first connecting end 2 and the second connecting end 3 in the axial direction A of the winding structure 1000 is zero; if N does not equal M, the vertical distance between the first connecting end 2 and the second connecting end 3 in the axial direction A of the winding structure 1000 is greater than zero.

[0094] An example is given where two coils 1 have different numbers of turns, and the first connection terminal 2 is located on the Nth turn of the corresponding coil 1, while the second connection terminal 3 is located on the Mth turn of the corresponding coil 1.

[0095] When the first connecting end 2 and the second connecting end 3 are located at the Nth and Mth turns of the two coils 1 respectively, since the number of turns of the coil 1 connected to the first connecting end 2 and the coil connected to the second connecting end 3 are different, the vertical distance between the first connecting end 2 and the second connecting end 3 in the axial direction A of the winding structure 1000 is zero or greater than zero, whether N is equal to M or not.

[0096] In the two embodiments described above, when the first connection end 2 is located at the Nth turn of the corresponding coil 1, the first connection end 2 can be located at any position on the Nth turn of the corresponding coil 1.

[0097] When the second connection terminal 3 is located at the Mth turn of the corresponding coil 1, the second connection terminal 3 can be located at any position on the Mth turn of the corresponding coil 1.

[0098] The coil 1 is wound along the axial direction A of the winding structure 1000. The axial direction A of the winding structure 1000 includes a first unidirectional direction and a second unidirectional direction. The axial direction A of the winding structure 1000 is used as the vertical direction for explanation. The first unidirectional direction is the vertical upward direction, and the second unidirectional direction is the vertical downward direction. Therefore, the Nth turn and the Mth turn of the coil 1 can refer to the Nth turn or the Mth turn of the coil 1 in the vertical upward direction, or they can refer to the Nth turn or the Mth turn of the coil 1 in the vertical downward direction.

[0099] The axial direction A of the winding structure 1000 is not limited to the up and down direction in the above embodiment, but can also be the left and right direction, the front and back direction, etc., which are not limited here.

[0100] It should be noted that, in the two coils 1, the Nth turn of one coil 1 and the Mth turn of the other coil are both calculated starting from the first unidirectional direction or the second unidirectional direction.

[0101] In this embodiment, one turn of the coil 1 can be formed by either a continuous wire 5 or a discontinuous wire 5, and no limitation is made here.

[0102] Specifically, please refer to Figure 3 In some embodiments of this application, the first connection end 2 is disposed on one of the two coils 1, and the second connection end 3 is disposed on the other of the two coils 1; the first connection end 2 and the second connection end 3 are respectively disposed on different turns of the two coils 1 having the same number of turns; this is configured so that there is no interference between the first connection end 2 and the second connection end 3.

[0103] In some embodiments of this application, the coil 1 with the first connecting end 2 and the coil 1 with the second connecting end 3 are not directly connected; this arrangement facilitates the winding of the winding structure 1000.

[0104] Specifically, the number of coils 1 in the winding structure 1000 is even, and the coils 1 are wound along the axial direction A of the winding structure 1000, according to... Figure 3 The connection method of adjacent coils 1 shown means that after the winding structure 1000 is wound, the first connection end 2 and the second connection end 3 will be located in different turns of different coils 1; that is, it is not necessary to misalign the first connection end 2 and the second connection end 3 after the winding structure 1000 is wound to avoid interference between the first connection end 2 and the second connection end 3.

[0105] In some embodiments of this application, among a plurality of coils 1, at least one coil 1 includes a first sub-coil 11 and a second sub-coil 12, which are electrically connected; one of the first connecting end 2 and the second connecting end 3 is connected to the first sub-coil 11, and the other is connected to the second sub-coil 12; in this embodiment, by setting the coil 1 to include a first sub-coil 11 and a second sub-coil 12 and respectively providing a first connecting end 2 and a second connecting end 3 on the first sub-coil 11 and the second sub-coil 12, the winding of the coil 1 is facilitated.

[0106] The first sub-coil 11 and the second sub-coil 12 are electrically connected to ensure that the current can circulate in the coil 1.

[0107] In some embodiments of this application, the first sub-coil 11 and the second sub-coil 12 can be electrically connected through other coils 1 in the winding structure 1000; in this embodiment, the winding method of other coils 1 besides the coil 1 provided with the first sub-coil 11 and the second sub-coil 12 is not limited.

[0108] The following description is provided with the first connecting end 2 connected to the first sub-coil 11 and the second connecting end 3 connected to the second sub-coil 12.

[0109] The first connecting end 2 can be soldered to the first sub-coil 11, or it can be an extension of the end of the first sub-coil 11, or a part of the first sub-coil 11 can be bent and extended out; there is no limitation here.

[0110] The second connecting end 3 is formed on the second sub-coil 12 in the same way as the first connecting end 2 is formed on the first sub-coil 11, and will not be described in detail here.

[0111] In some embodiments of this application, the first sub-coil 11 includes a first portion, and the second sub-coil 12 includes a second portion, the first portion and the second portion constituting one turn of the coil 1; wherein, the first connecting end 2 is connected to the first portion, and the second connecting end 3 is connected to the second portion; in this embodiment, by setting the first portion of the first sub-coil 11 and the second portion of the second sub-coil 12 to constitute the same turn of the coil 1, the first connecting end 2 and the second connecting end 3 can be located on the same turn of the coil 1 in the above embodiment.

[0112] In some embodiments of this application, the first connecting end 2 is the end of the lead wire, and the second connecting end 3 is the end of the star wire; that is, in this embodiment, the first sub-coil 11 is provided with a lead wire, and the second sub-coil 12 is provided with a star wire.

[0113] In some other embodiments of this application, the first connecting end 2 is the lead wire of the star-shaped wire, and the second connecting end 3 is the end of the lead wire; that is, in this embodiment, the first sub-coil 11 is provided with a star-shaped wire, and the second sub-coil 12 is provided with a lead wire.

[0114] The following description uses the first connecting end 2 as the end of the lead wire and the second connecting end 3 as the end of the star-shaped line.

[0115] By providing a coil 1 including a first sub-coil 11 and a second sub-coil 12 in the winding structure 1000, with the first sub-coil 11 having a first connecting end 2 and the second sub-coil 12 having a second connecting end 3, that is, the first sub-coil 11 and the second sub-coil 12 respectively forming lead wires and star wires, the star wires and lead wires of the winding structure 1000 can be located in the same coil 1, and the winding of the coil 1 is convenient.

[0116] In some embodiments of this application, the first connecting end 2 is connected to the end of the first part; this arrangement allows a portion to be reserved to form the first connecting end 2 when the first sub-coil 11 is wound, thereby facilitating the winding of the coil 1 and improving the winding efficiency of the coil 1, which includes the first sub-coil 11 and the second sub-coil 12.

[0117] In some embodiments of this application, the second connecting end 3 is connected to the end of the first part; this arrangement allows a portion to be reserved to form the second connecting end 3 when the second sub-coil 12 is wound, thereby facilitating the winding of the coil 1 and improving the winding efficiency of the coil 1, which includes the first sub-coil 11 and the second sub-coil 12.

[0118] In some embodiments of this application, the plurality of coils 1 include a first coil 101 and a second coil 102. The first coil 101 includes a first sub-coil 11 and a second sub-coil 12. The number of turns of the second coil 102 is equal to the sum of the number of turns of the first sub-coil 11 and the second sub-coil 12. That is, in this embodiment, the first coil 101 with the first sub-coil 11 and the second sub-coil 12 and the second coil 102 without the first sub-coil 11 and the second sub-coil 12 have the same number of turns to ensure the electromagnetic balance of the winding structure 1000, thereby enabling the motor to operate stably.

[0119] The first sub-coil 11 and the second sub-coil 12 can be interconnected through the interconnected second coil 102 to achieve electrical connection between the first sub-coil 11 and the second sub-coil 12.

[0120] The number of second coils 102 between the first sub-coil 11 and the second sub-coil 12 is not limited; there can be one or more.

[0121] In some embodiments of this application, the first connecting end 2 and the second connecting end 3 are located outside the corresponding coil 1 along the radial direction of the circular trajectory. This arrangement, compared to the arrangement where the first connecting end 2 and the second connecting end 3 are both located inside the corresponding coil 1 or at one end of the corresponding coil 1 in the axial direction A of the winding structure 1000, can avoid the solder joints of the first connecting end 2 and the second connecting end 3 protruding from the coil 1 in the axial direction A of the winding structure 1000, which would make the winding structure 1000 prone to axial deformation and cause dimensional deviations.

[0122] In the radial direction of the circular track, coil 1 has two sides arranged opposite to each other, and coil 1 has an outer side and an inner side. The inner side of coil 1 refers to the side of coil 1 that is closer to the midpoint of the circular track, and the outer side of coil 1 refers to the side of coil 1 that is farther away from the midpoint of the circular track.

[0123] The radial direction of the circular trajectory is... Figures 1 to 3 The radial direction B of the winding structure 1000 shown.

[0124] If the first connecting end 2 and the second connecting end 3 are both located inside the corresponding coil 1, then when connecting the first connecting end 2 and the second connecting end 3 to the external structure, they need to be bent out from the inside of the coil 1 along the axial direction A of the winding structure 1000, which makes the winding structure 1000 prone to axial deformation and dimensional deviation.

[0125] Similarly, if the first connecting end 2 and the second connecting end 3 are located at one end of the coil 1 in the axial direction A of the winding structure 1000, the solder joints of the first connecting end 2 and the second connecting end 3 may protrude from the coil 1 in the axial direction A of the winding structure 1000, making the winding structure 1000 prone to axial deformation and causing dimensional deviations.

[0126] In some embodiments of this application, the winding structure 1000 further includes at least one connecting portion 13, which connects any two adjacent coils 1. The connecting portion 13 is located inside the coil 1 along the radial direction of the circular trajectory. This arrangement ensures that while the two adjacent coils 1 are bridged to each other, the connecting portion 13 can also avoid encroaching on the outer side of the coil 1 or the space on both sides of the coil 1 in the axial direction A of the winding structure 1000, so as to ensure that there is enough space around the coil 1 for arranging the stator core.

[0127] Furthermore, the connection part 13 is located inside the plurality of coils 1, which can optimize the winding structure 1000 and reduce the amount of material used. Compared with related technologies, the outer diameter of the winding structure 1000 is reduced, which in turn reduces the outer diameter of the stator housing of the motor, and the volume of the cavity inside the housing is also reduced. The overall volume and weight of the motor are reduced, and the amount of potting compound used in potting is also reduced accordingly.

[0128] In some embodiments of this application, the connecting portion 13 is continuously arranged; that is, in this embodiment, the connecting portion 13 as a whole does not have a connection point, so that two adjacent coils 1 can be electrically connected.

[0129] The two ends of the connecting part 13 can be fixedly connected to two adjacent coils 1 or the connecting part 13 can be integrally provided with two adjacent coils 1 to realize the electrical connection between the two adjacent coils 1.

[0130] In some embodiments of this application, the connecting part 13 includes a first sub-segment 131 and a second sub-segment 132, which are respectively connected to two adjacent coils 1, and the first sub-segment 131 and the second sub-segment 132 are fixedly connected to each other; that is, in this embodiment, the first sub-segment 131 and the second sub-segment 132 in the connecting part 13 are fixedly connected to each other to realize the electrical connection between two adjacent coils 1.

[0131] The first segment 131 can be integrally formed with the corresponding coil 1 or fixedly connected to the corresponding coil 1; the second segment 132 can be integrally formed with the corresponding coil 1 or fixedly connected to the corresponding coil 1.

[0132] Specifically, in some embodiments of this application, the first sub-segment 131 and the second sub-segment 132 are integrally formed with the corresponding coil 1, that is, the fixed connection between two adjacent coils 1 is achieved by fixing the first sub-segment 131 and the second sub-segment 132 to each other.

[0133] In some embodiments of this application, the winding structure 1000 has both a continuously arranged connecting portion 13 and a connecting portion 13 including a first sub-segment 131 and a second sub-segment 132, so as to realize the integral arrangement between adjacent coils 1 and the fixed connection between adjacent coils 1.

[0134] In some embodiments of this application, the coil 1 includes at least one wire 5 wound along a first direction to form the coil 1, the first direction being perpendicular to the circular trajectory; in this embodiment, the wire 5 is wound into a closed coil 1 to form a continuous current loop, ensuring that the current flows along a predetermined path, avoiding energy loss, and enabling the construction of a controllable magnetic field.

[0135] The first direction is the axial direction A of the winding structure 1000.

[0136] The type of conductor 5 is not limited; it can be either a round wire or a flat wire.

[0137] Specifically, in some embodiments of this application, the conductor 5 is a flat wire.

[0138] Furthermore, the conductor 5 can be a continuous conductor or a discontinuous conductor, which is not limited here; if the conductor 5 is a discontinuous conductor, the winding of the conductor 5 can form a coil 1 including a first sub-coil 11 and a second sub-coil 12 in the embodiments of this application.

[0139] In some embodiments of this application, the connecting portion 13 is also composed of at least one wire 5 and is led out from the coil 1.

[0140] In some embodiments of this application, at least two wires 5 are provided, and the two wires 5 are stacked in a first direction; in this embodiment, by providing multiple wires 5 stacked and wound to form a coil 1, that is, the design of multiple wires 5 can reduce eddy current losses.

[0141] Specifically, the arrangement of multiple conductors 5 is compared with the arrangement of a single conductor in related technologies. The cross-sectional area of ​​a single conductor in related technologies is the same as the total cross-sectional area of ​​multiple conductors 5 in this application. The design of multiple conductors 5 in this application results in a smaller cross-sectional area of ​​a single conductor 5, thereby reducing the amplitude of eddy currents in a single conductor 5, and thus reducing the eddy current loss of the winding structure 1000.

[0142] In addition, multiple wires 5 are wound together to form coil 1, which can effectively improve the energy density of the motor.

[0143] In some embodiments of this application, in two integrally arranged and adjacent coils 1, the stacking direction of the plurality of wires 5 in one coil 1 is opposite to the stacking direction of the plurality of wires 5 in the other coil 1; in this embodiment, by providing alternating reversed wires 5 in two integrally arranged and adjacent coils 1, the difference in induced electromotive force can be offset to effectively reduce the generation of circulating current.

[0144] The following explanation uses two wires 5 as the first wire and the second wire, which are stacked in the vertical direction; at this time, the two wires 5 are wound in the vertical direction to form a coil 1.

[0145] In two adjacent coils 1 that are integrally arranged, the first wire in one coil 1 is located above the second wire, and the first wire in the other coil 1 is located below the second wire, so that the two adjacent coils 1 are provided with alternating reversed wires 5.

[0146] In some embodiments of this application, a plurality of coils 1 integrally formed by winding at least one wire 5; in this embodiment, a plurality of coils 1 are formed by winding at least one wire 5 so that the plurality of coils 1 are integrally formed.

[0147] In some embodiments of this application, the number of coils 1 is A; where A is an even number and greater than zero; in this embodiment, by setting the number of coils 1 to an even number, the symmetry and balance of the magnetic field in the winding structure 1000 are ensured.

[0148] Each coil 1 is integrally formed with one of its adjacent coils 1 and stacked in opposite directions, and is fixedly connected to another adjacent coil 1, so as to offset the difference in induced electromotive force and reduce the generation of circulating current.

[0149] The opposite stacking direction between adjacent coils 1 means that each of the two adjacent coils 1 is formed by winding at least two wires 5. In the two adjacent coils 1, the stacking direction of multiple wires 5 in different coils 1 is opposite. For details, please refer to the above embodiment, which will not be repeated here.

[0150] In some embodiments of this application, the coil 1 includes a first end 6 and a second end 7 spaced apart in a first direction, the first direction being perpendicular to the circular trajectory; in at least two adjacent coils 1, the first end 6 of one coil 1 is connected to the second end 7 of the other coil; this arrangement makes the extension direction of the connecting portion 13 the same, thereby standardizing the winding of the winding structure 1000.

[0151] This application also proposes a winding assembly, which includes a stator core and multiple winding structures 1000. The winding structures 1000 are disposed on the stator core, and each winding structure 1000 belongs to a different phase. Each winding structure 1000 includes multiple coils 1. In each winding structure 1000, the multiple coils are arranged sequentially along a circular trajectory. In at least one winding structure 1000, some adjacent coils 1 are integrally disposed, and some adjacent coils 1 are fixedly connected.

[0152] In this embodiment, by setting some adjacent coils 1 as an integral part and some adjacent coils 1 as fixedly connected, the multiple coils 1 in the winding structure 1000 do not need to be continuously wound, thereby reducing the dimensional tolerance requirements of the winding structure 1000 set on the stator core and thus reducing the processing difficulty.

[0153] Please see Figure 8 Taking a three-phase motor as an example, the stator assembly of the three-phase motor has three winding structures 1000, which correspond to the three phases respectively. One of the first connection terminal 2 and the second connection terminal 3 of the three winding structures 1000 are connected to each other so that the three winding structures 1000 are connected to each other and form a closed loop. The other of the first connection terminal 2 and the second connection terminal 3 of the three winding structures 1000 are connected to an external power source so that current can be passed through all three winding structures 1000.

[0154] In some embodiments of this application, the first connection end 2 is a star point.

[0155] In some embodiments of this application, the second connection terminal 3 is a lead wire.

[0156] In some embodiments of this application, the length of the second connection end 3 is longer than the length of the first connection end 2, so as to facilitate the connection of the second connection end 3 to an external power source.

[0157] Specifically, the length of the second connection end 3 is longer than the length of the first connection end 2, so that the second connection end 3 can be connected to the three-phase terminal block.

[0158] Furthermore, other features of the winding structure 1000 are described in the above embodiments and will not be repeated here.

[0159] This application also provides a stator assembly, which includes a winding structure 1000 or a winding assembly, as described above. Since the stator assembly adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments.

[0160] This application also provides an electric motor, which includes a winding structure 1000, a winding assembly, or a stator assembly. The winding structure 1000, the winding assembly, and the stator assembly are as described above. Since the electric motor adopts all the technical solutions of the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments.

[0161] This application also provides a drive system, which includes a winding structure 1000, a winding assembly, a stator assembly, or a motor. The winding structure 1000, the winding assembly, the stator assembly, and the motor are as described above. Since the drive system adopts all the technical solutions of the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments.

[0162] This application also provides a vehicle, which includes a winding structure 1000 or a winding assembly or a stator assembly or a motor or a drive system. The winding structure 1000, winding assembly, stator assembly, motor and drive system are as described above. Since the vehicle adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments.

[0163] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions.

[0164] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0165] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0166] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0167] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A winding structure, characterized in that, include: Multiple coils are arranged sequentially along a circular trajectory; Some of the adjacent coils are integrally formed, while some of the adjacent coils are fixedly connected.

2. The winding structure according to claim 1, characterized in that, The winding structure also includes a first connecting end and a second connecting end; The first connection end and the second connection end are disposed on the same coil or on different coils.

3. The winding structure according to claim 2, characterized in that, Each of the coils has multiple turns; The first connection end and the second connection end are disposed on the same turn or different turns of any of the coils.

4. The winding structure according to claim 2, characterized in that, Each of the coils has multiple turns, and the first connection end and the second connection end are respectively disposed on the Nth turn and the Mth turn of different coils; Where N is equal to M or N is not equal to M.

5. The winding structure according to claim 2, characterized in that, In the plurality of coils, at least one coil includes a first sub-coil and a second sub-coil, the first sub-coil and the second sub-coil being electrically connected; In this configuration, one of the first connection terminal and the second connection terminal is connected to the first sub-coil, and the other is connected to the second sub-coil.

6. The winding structure according to claim 5, characterized in that, The first sub-coil includes a first portion, and the second sub-coil includes a second portion, wherein the first portion and the second portion constitute one turn of the coil; The first connection end is connected to the first part, and the second connection end is connected to the second part.

7. The winding structure according to claim 6, characterized in that, The first connecting end is connected to the end of the first portion; and / or The second connecting end is connected to the end of the second part.

8. The winding structure according to claim 5, characterized in that, The plurality of said coils include: The first coil includes a first sub-coil and a second coil; and Second coil; The number of turns of the second coil is equal to the sum of the number of turns of the first sub-coil and the second sub-coil; the first sub-coil is electrically connected to the second sub-coil via the second coil.

9. The winding structure according to claim 2, characterized in that, Along the radial direction of the circular trajectory, the first connecting end and the second connecting end are located outside the corresponding coil.

10. The winding structure according to claim 9, characterized in that, The winding structure also includes: At least one connecting part connects any two adjacent coils; In the radial direction along the annular trajectory, the connecting portion is located inside the coil.

11. The winding structure according to claim 10, characterized in that, The connecting portion is continuously arranged; or The connecting part includes a first sub-segment and a second sub-segment, which are respectively connected to two adjacent coils and are fixedly connected to each other.

12. The winding structure according to any one of claims 1 to 11, characterized in that, The coil includes: At least one wire is wound along a first direction to form the coil, the first direction being perpendicular to the circular trajectory.

13. The winding structure according to claim 12, characterized in that, The conductor is provided in at least two forms, and the two conductors are stacked in the first direction.

14. The winding structure according to claim 13, characterized in that, In two coils that are integrally formed and adjacent to each other, the stacking direction of the plurality of wires in one coil is opposite to the stacking direction of the plurality of wires in the other coil.

15. The winding structure according to claim 12, characterized in that, The multiple coils that are integrally formed are wound from at least one of the wires.

16. The winding structure according to any one of claims 1 to 11, characterized in that, The number of coils is A; Wherein, A is an even number and greater than zero, each coil is integrally formed with one of the adjacent coils and stacked in opposite directions, and is fixedly connected to the other adjacent coil.

17. The winding structure according to any one of claims 1 to 11, characterized in that, The coil includes a first end and a second end spaced apart in a first direction, the first direction being perpendicular to the circular trajectory; In at least two adjacent coils, the first end of one coil is connected to the second end of the other coil.

18. A winding assembly, characterized in that, include: Stator core; and Multiple winding structures are disposed on the stator core, each winding structure belongs to a different phase, and each winding structure includes multiple coils; In each of the winding structures, multiple coils are arranged sequentially along a circular trajectory; In at least one of the winding structures, some adjacent coils are integrally formed, and some adjacent coils are fixedly connected.

19. A stator assembly, characterized in that, Includes the winding structure as described in any one of claims 1 to 17 or the winding assembly as described in claim 18.

20. An electric motor, characterized in that, It includes the winding structure as described in any one of claims 1 to 17, the winding assembly as described in claim 18, or the stator assembly as described in claim 19.

21. A drive system, characterized in that, Includes the winding structure as described in any one of claims 1 to 17, the winding assembly as described in claim 18, the stator assembly as described in claim 19, or the motor as described in claim 20.

22. A vehicle, characterized in that, It includes the winding structure as described in any one of claims 1 to 17, the winding assembly as described in claim 18, the stator assembly as described in claim 19, the motor as described in claim 20, or the drive system as described in claim 21.

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