Continuous winding assembly and motor comprising a continuous winding assembly

Abstract

The present disclosure relates to a continuous winding assembly and a motor including the same. In a continuous winding assembly wound around a motor stator, each winding between parallel circuits connected to form a series winding can have a specific pitch and shape to satisfy back electromotive force and inductance balance, and at the same time, wires to be connected can be positioned in the same phase to be welded together without being twisted, thereby easily forming a series winding without a terminal assembly.

Description

Technical Field

[0001] This disclosure relates to a continuous winding assembly, and more specifically, to a continuous winding assembly wound on a motor stator. Background Technology

[0002] In motor design, the use of edge windings maximizes slot space, enabling motor miniaturization. Unlike round wire windings, edge windings, when inserted into slots, form a layered structure with varying inductance between layers. Furthermore, because the back electromotive force (EMF) phase differs between slots, a balanced winding layout is necessary to eliminate inductance differences between parallel paths and phase differences in the back EMF when using parallel circuits. This imbalance generates circulating current, leading to motor overheating. Therefore, the rules governing coil arrangement in slots and layers are highly restrictive.

[0003] Continuous windings (such as hairpin windings) require winding layouts that consider inductance balance and back EMF phase balance. However, due to the constraints of welded joints, hairpin windings need to be set with a uniform pitch, while continuous windings have the advantage of not having welded joints, thus providing greater layout flexibility for the pitch on both sides of the crown. However, this flexibility also increases design complexity. In particular, when terminal assemblies are required, the increased material costs, number of welding operations, and process complexity can lead to disadvantages in terms of cost and quality.

[0004] Furthermore, when windings are connected between parallel circuits to form series windings using continuous windings, such as Figure 1 and Figure 2 As shown, there exists a situation where the connection structure of the windings between parallel circuits is misaligned to maintain back electromotive force and inductance balance. That is, as... Figure 2 As shown, since windings of the same phase (represented by the same color) need to be electrically connected in the arrangement state, a terminal assembly is required to achieve this connection.

[0005] Related technical documents

[0006] (Patent document 1) U.S. Patent No. 7269888 "Method of making cascaded multilayerstator winding with interleaved transitions". Summary of the Invention

[0007] This disclosure relates to providing a continuous winding assembly in which each winding between parallel circuits connected to form a series winding has a specific pitch and shape that satisfies back electromotive force and inductance balance, and at the same time, the wires to be connected are positioned in the same phase to be welded together without twisting, thereby easily forming a series winding without terminal assemblies.

[0008] According to embodiments of this disclosure, a continuous winding assembly for a stator is provided. For each pole of a rotor, the stator includes a predetermined slot group comprising a plurality of slots arranged adjacent to and continuously positioned relative to the pole of the rotor. The continuous winding assembly includes: a first winding unit comprising a plurality of windings extending in a circumferential direction of the stator, each of the plurality of windings in the first winding unit being inserted into and wound in a corresponding slot included in the predetermined slot group, and the plurality of windings in the first winding unit being arranged in parallel; and a second winding unit electrically connected to the first winding unit and comprising a plurality of windings extending in the circumferential direction of the stator, each of the plurality of windings in the second winding unit being inserted into a corresponding slot included in the predetermined slot group. The windings are wound in corresponding slots, and the plurality of windings in the second winding unit are arranged in parallel, wherein each winding in the plurality of windings of the first winding unit and each winding in the plurality of windings of the second winding unit are connected in a one-to-one manner and are directly connected to each other. Each winding in the first winding unit and the second winding unit is inserted into the slots in the plurality of layers in the radial direction and includes a plurality of slot insertion portions and jump portions. The slot insertion portions are inserted into the slots and extend in the axial direction of the motor. The jump portions are disposed between the slot insertion portions and extend with a predetermined pitch. In each of the plurality of layers, at least any one of the plurality of windings in the first winding unit has a jump portion with a standard pitch, and at least any one of the plurality of windings in the second winding unit has a jump portion with a standard pitch.

[0009] The end of the second winding unit can be inserted into a slot adjacent to the slot into which the end of the winding of the first winding unit is inserted.

[0010] The winding may include at least two single-layer portions wound on a single layer, and each single-layer portion may include a slot insert inserted into each slot group adjacent to all poles, and at least one layer jump portion disposed between the two or more single-layer portions and intersecting two or more of the plurality of layers.

[0011] When the standard pitch is x, the jumper included in the first winding unit and the second winding unit may have any pitch value selected from x, x-1 and x+1, and each single-layer portion may be formed only by jumpers with a pitch of x, or by alternating jumpers with pitches of x-1 and x+1.

[0012] When the standard pitch is x, the jumper included in the first winding unit and the second winding unit can have any pitch value selected from x, x-1 and x+1.

[0013] The total number of layers wound with the first winding unit and the second winding unit can be a multiple of 3.

[0014] The number N1 of layer jump portions included in each winding of the first winding unit and the number N2 of layer jump portions included in each winding of the second winding unit can be expressed by the following equation: Equations: N1 = p(k-1), N2 = q(mk-1) Where N1 is the number of layer jumps in the winding of the first winding unit, N2 is the number of layer jumps in the winding of the second winding unit, p and q are constants (integers greater than or equal to 1), m is the total number of layers (a multiple of 3), and k is the number of odd layers in the radial direction.

[0015] When the total number of poles of the motor is S, the layer jump portion can be formed between the slot insertion portion of each winding wound with the nSth turn and the slot insertion portion of each winding wound with the nS+1th turn (n is a natural number).

[0016] The single-layer portion of the first winding unit may be wound on an odd number of layers in the radial direction, and the single-layer portion of the second winding unit may be wound on an even number of layers in the radial direction.

[0017] The layer skip portions of the first winding unit and the second winding unit can pass through odd or even layers in the radial direction. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the winding configuration and connection relationship according to the prior art.

[0019] Figure 2 This is a partial perspective view showing the winding-to-winding connection relationship according to the prior art.

[0020] Figure 3 This is a schematic diagram illustrating the winding configuration and connection relationship according to this disclosure.

[0021] Figure 4 This is a partial plan view showing the layers of the windings of this disclosure.

[0022] Figure 5 This is a schematic diagram showing a portion of the arrangement of the first winding unit of this disclosure.

[0023] Figure 6 This is a schematic diagram showing the layer jump portion that intersects the first and third layers of the first winding unit of this disclosure.

[0024] Figure 7 This is a schematic diagram showing the layer jump portion that intersects with the third and fifth layers of the first winding unit of this disclosure.

[0025] Figure 8 This is a schematic diagram showing the arrangement of the second winding unit of this disclosure.

[0026] Figure 9 This is a schematic diagram showing the layer jump portion that intersects the second and fourth layers of the second winding unit of this disclosure.

[0027] Figure 10 This is a schematic diagram showing the layer jump portion that intersects with the fourth and sixth layers of the second winding unit of this disclosure.

[0028] Explanation of reference numerals in the attached figures

[0029] 1000: Continuous winding assembly

[0030] 100: First winding unit

[0031] 110: First wire

[0032] 120: Second wire

[0033] 130: Third wire

[0034] 200: Second winding unit

[0035] 210: Fourth wire

[0036] 220: Fifth wire

[0037] 230: Sixth wire

[0038] 300: Slot insertion part

[0039] 400: Jump Section

[0040] 500: Single-layer section

[0041] 600: Layer Jump Section

[0042] L-1: First Layer

[0043] L-2: Second Layer

[0044] L-3: Third Floor

[0045] L-4: Fourth Floor

[0046] L-5: Fifth Floor

[0047] L-6: Sixth Floor

[0048] St: Stator

[0049] Sg: Slot assembly

[0050] SX: Slot X

[0051] SY: Yth slot

[0052] SZ: Zth slot Detailed Implementation

[0053] The technical spirit of this disclosure will be described in more detail below with reference to the accompanying drawings. Before the description, the terms or words used in this specification and claims should not be construed as limited to their ordinary or dictionary meaning, but should be interpreted as conforming to the meaning and concept of the technical spirit of this disclosure, based on the principle that the inventor can appropriately define the concepts of the terms in order to best describe his or her own invention.

[0054] In the following text, reference will be made to Figure 3 and Figure 4 The basic configuration of the continuous winding assembly 1000 disclosed herein is described.

[0055] The continuous winding assembly 1000 disclosed herein is applied to a stator St, wherein for each pole of the rotor, the stator St includes a predetermined slot group Sg, the slot group Sg comprising a plurality of slots arranged adjacent to the poles of the rotor and continuously positioned relative to the poles of the rotor, and as follows: Figure 3 As shown, the continuous winding assembly 1000 may include a first winding unit 100 and a second winding unit 200. More specifically, the first winding unit 100 may include a plurality of windings (wires 110, 120, and 130) extending in the circumferential direction of the stator St, and each winding (wires 110, 120, and 130) is inserted into and wound in a corresponding slot included in the slot group Sg. The second winding unit 200 may be electrically connected to the first winding unit 100, and the second winding unit 200 may include a plurality of windings (wires 210, 220, and 230) extending in the circumferential direction of the stator St, and each winding (wires 210, 220, and 230) is inserted into and wound in a corresponding slot included in the slot group Sg.

[0056] In this configuration, the end of the second winding unit 200 can be inserted into a slot Sg adjacent to the slot Sg into which the ends of the windings of the first winding unit 100 are inserted, and the ends of the first winding unit 100 and the second winding unit 200 can be electrically connected by soldering. In this configuration, each winding included in the first winding unit 100 and each winding included in the second winding unit 200 can be directly connected to each other in a one-to-one manner. That is, the windings can be directly connected to each other without terminal assemblies, thereby increasing manufacturing convenience.

[0057] Furthermore, each winding included in the first winding unit 100 and the second winding unit 200 can be radially inserted into slots in multiple layers, and each winding included in the first winding unit 100 and the second winding unit 200 can include multiple slot insertion portions 300 and multiple jump portions 400. More specifically, the slot insertion portions 300 can be inserted into slots and can extend in the axial direction of the motor, and the jump portions 400 can be disposed between the slot insertion portions 300 and formed to extend at a predetermined pitch. In this case, within each layer, at least one of the parallel windings included in the first winding unit 100 can have a jump portion 400 formed with a standard pitch, and within the same layer, other parallel windings can have jump portions 400 formed with a non-standard pitch. Even in the second winding unit 200, within each layer, at least one of the parallel windings can have a jump portion 400 formed with a standard pitch, and within the same layer, other parallel windings can have jump portions 400 formed with a non-standard pitch. By forming each parallel winding in this way, the pitch of each jumper can be regular, thus increasing the ease of manufacturing each winding.

[0058] Furthermore, the number of layers of wire stacked in the slot can be a multiple of 3 from the innermost side of the slot. For example, as... Figure 4 As shown, six layers can be provided. In the following description, each layer is referred to as layer L-1, layer L-2, layer L-3, layer L-4, layer L-5, and layer L-6. Furthermore, the slot group Sg can consist of three consecutive slots and can include a first slot SX located at one edge of the slot, a second slot SY located at the center of the slot, and a third slot SZ located at the other edge of the slot.

[0059] Furthermore, each winding included in the first winding unit 100 and the second winding unit 200 may include at least two single-layer portions 500 wound on a single layer. A single-layer winding unit may include a slot insertion portion 300 inserted adjacent to each pole into each slot group Sg. More specifically, when the standard pitch is x, the pitch of the jump portions 400 of the parallel-arranged windings may have any pitch value selected from (x-1), x, and (x+1). For example, when the standard pitch is 9, the pitch of the jump portions 400 may be any selected from 8, 9 (standard pitch), and 10. In this case, one single-layer portion 500 included in each winding may be formed solely by jump portions 400 having a pitch of x, or by alternating jump portions 400 having pitches of (x-1) and (x+1). More preferably, when the number of layers is 6 and a winding includes three single-layer portions 500, one of the three single-layer portions 500 included in a winding may be formed only by a jumper portion 400 having a pitch of x, and the remaining two single-layer portions 500 may be formed by alternating jumper portions 400 having a pitch of (x-1) and jumper portions 400 having a pitch of (x+1).

[0060] Furthermore, each winding included in the first winding unit 100 and the second winding unit 200 may include at least one layer jump portion 600 disposed between and intersecting two or more single-layer portions 500. The windings of the jump portions 400 included in the layer jump portions 600 may intersect each other. When the standard pitch is x, the pitch of the layer jump portion 600 may have any pitch value selected from x, (x-1), and (x+1). For example, when the standard pitch is 9, the pitch of the jump portion 400 may be any selected from 8, 9 (standard pitch), and 10. Therefore, even when the jump portions 400 of the single-layer portion 500 are formed by mixing standard and non-standard pitches as described above, the ends of the first winding unit 100 and the second winding unit 200 connected to each other may be disposed on the same phase of adjacent slot groups Sg. For example, the t1 end of the first wire 110 of the first winding unit 100 and the T1 end of the fourth wire 210 of the second winding unit 200 can be wound on the same phase of adjacent slot groups Sg, such as the Y slot SY.

[0061] Furthermore, the single-layer portion 500 of the first winding unit 100 can be wound on an odd number of layers in the radial direction. That is, when six layers are provided in the radial direction, the single-layer portion 500 of each parallel winding of the first winding unit 100 can be wound on the first layer L-1, the third layer L-3, and the fifth layer L-5. Furthermore, the single-layer portion 500 of the second winding unit 200 can be wound on an even number of layers in the radial direction. That is, when six layers are provided in the radial direction, the single-layer portion 500 of each parallel winding of the second winding unit 200 can be wound on the second layer L-2, the fourth layer L-4, and the sixth layer L-6.

[0062] In this case, the layer skip portion 600 included in the first winding unit 100 and the second winding unit 200 can be configured to pass through at least one of the odd or even layers, regardless of whether the layers are odd or even. For example, in addition to the first layer L-1 and the third layer L-3, the layer skip portion 600 connecting the single layer portion 500 in the first layer L-1 and the single layer portion 500 in the third layer L-3 of the first winding unit 100 can be formed to pass through the second layer L-2 disposed between the first layer L-1 and the third layer L-3.

[0063] Furthermore, the number N1 of layer jump portions 600 included in each parallel winding in the first winding unit 100 can follow Equation 1 below.

[0064] Equation 1: N1 = p(k-1)

[0065] Where N1 represents the number of layer skip portions 600 in the winding of the first winding unit 100, p represents a constant (an integer greater than or equal to 1), and k represents the number of odd-numbered layers in the radial direction. That is, when p is 1, a single continuous single-layer portion 500 includes slot insertion portions 300 corresponding to all poles in the circumferential direction, and when p is 2 or more, a single continuous single-layer portion 500 includes slot insertion portions 300 corresponding only to some poles in the circumferential direction (e.g., the winding is only applied to 1 / 2 or 1 / 4 of the circumferential region of the motor), so that the layer skip portions 600 are provided more densely.

[0066] Furthermore, the number N2 of layer jump portions 600 included in each parallel winding in the second winding unit 200 can be expressed according to Equation 2 below.

[0067] Equation 2: N2 = q(mk-1)

[0068] Where N2 represents the number of layer skip portions 600 in the winding of the second winding unit 200, q represents a constant (an integer greater than or equal to 1), m represents the total number of layers (a multiple of 3), and k represents the number of odd-numbered layers in the radial direction. That is, when q is 1, a single continuous single-layer portion 500 includes slot insertion portions 300 corresponding to all poles in the circumferential direction, and when q is 2 or more, a single continuous single-layer portion 500 includes slot insertion portions 300 corresponding only to some poles in the circumferential direction (e.g., the winding is only applied to 1 / 2 or 1 / 4 of the circumferential region of the motor), so that the layer skip portions 600 are provided more densely.

[0069] Furthermore, when the total number of poles of the motor is S, the layer skip portion 600 can be formed between the slot insertion portion 300 wound with nS turns of each winding and the slot insertion portion 300 wound with nS+1 turns of each winding. In this case, n represents a natural number. More specifically, when the total number of poles of the motor is 8, the layer skip portion 600 can be provided between the slot insertion portion 300 wound with each winding in multiples of 8 (e.g., the 8th, 16th, 24th...) and the adjacent slot insertion portions 300 wound with each winding in the 9th, 17th, 25th... turns.

[0070] In the following text, reference will be made to Figures 5 to 7 An example of the first winding unit 100 of this disclosure is described in more detail.

[0071] Embodiments of this disclosure will be described for application to a standard pitch motor having 8 poles, 6 radial winding layers, and 9 pitch. For example... Figure 5 As shown, the first winding unit 100 may include a first wire 110, a second wire 120, and a third wire 130 wound in parallel with each other. The first wire 110, the second wire 120, and the third wire 130 may be wound three times around the stator St in the circumferential direction, and wound on the first layer L-1, the third layer L-3, and the fifth layer L-5, respectively.

[0072] Furthermore, the pitch of the layer jump portion 600 of the winding included in the first winding unit 100 can be selected from any one of 8-pitch, 9-pitch, and 10-pitch. For example, as Figure 6 As shown, the pitch P1 of the layer jump portion 600 of the first wire 110, which intersects with the first layer L-1 and the third layer L-3, can be 8; the pitch P2 of the layer jump portion 600 of the second wire 120 can be 9; and the pitch P3 of the layer jump portion 600 of the third wire 130 can be 10. Furthermore, as... Figure 7As shown, the pitch P4 of the layer jump portion 600 of the first wire 110 that intersects with the third layer L-3 and the fifth layer L-5 can be 9, the pitch P5 of the layer jump portion 600 of the second wire 120 can be 10, and the pitch P6 of the layer jump portion 600 of the third wire 130 can be 8.

[0073] More specifically, the first wire 110 of the first winding unit 100 can be configured such that, in the first layer L-1, the jumper portion 400 included in the single-layer portion 500 is arranged with a standard pitch of 9, and the slot insertion portion 300 at one end of the first wire 110 is fully inserted into the Xth slot SX; in the third layer L-3, the jumper portion 400 included in the single-layer portion 500 is formed to alternately have pitches of 8 and 10, and the slot insertion portion contacts the layer jumper portion 600 extending from the first layer L-1. The slot insertion part 300 is inserted into the Y slot SY, and then alternately inserted into the Z slot SZ and the Y slot SY; in the fifth layer L-5, the jump part 400 included in the single layer portion 500 is formed to have alternating pitches of 8 and 10, and the slot insertion part 300 that contacts the layer jump part 600 extending from the third layer L-3 is inserted into the Z slot SZ, and then alternately inserted into the Y slot SY and the Z slot SZ; and the slot insertion part 300 at the other end of the first wire 110 is inserted into the Y slot SY.

[0074] Furthermore, the second wire 120 of the first winding unit 100 can be configured such that, in the first layer L-1, the jumper portion 400 included in the single-layer portion 500 is formed with alternating pitches of 8 and 10, and the slot insertion portion 300 at one end is inserted into the Y slot SY, and then alternately inserted into the Z slot SZ and the Y slot SY; in the third layer L-3, the jumper portion 400 included in the single-layer portion 500 is formed with alternating pitches of 8 and 10, and the slot insertion portion 300 that contacts the layer jumper portion 600 extending from the first layer L-1 is inserted into the Z slot SZ, and then alternately inserted into the Y slot SY and the Z slot SZ; and in the fifth layer L-5, the jumper portion 400 included in the single-layer portion 500 is formed with a standard pitch of 9, and all the slot insertion portions 300 in the fifth layer L-5 that contact the layer jumper portion 600 extending from the third layer L-3 are inserted into the X slot SX. That is, the slot insertion part 300 at the other end of the second wire 120 can be inserted into the Xth slot SX.

[0075] Furthermore, the third wire 130 of the first winding unit 100 can be configured such that, in the first layer L-1, the jumper portion 400 included in the single-layer portion 500 is formed to alternately have pitches of 8 and 10, and the slot insertion portion 300 at one end is inserted into the Z slot SZ, and then alternately inserted into the Y slot SY and the Z slot SZ; in the third layer L-3, the jumper portion 400 included in the single-layer portion 500 is formed to have a standard pitch, and is connected to the layer jumper portion extending from the first layer L-1. All slot insertion portions 300 in the third layer L-3, which is 600-degree contact, are inserted into the X slot SX; in the fifth layer L-5, the jump portion 400 included in the single layer portion 500 is formed to alternately have pitches of 8 and 10, and the slot insertion portion 300 that contacts the layer jump portion 600 extending from the third layer L-3 is inserted into the Y slot SY, and then alternately inserted into the Z slot SZ and the Y slot SY; and the slot insertion portion 300 at the other end of the third wire 130 is inserted into the Z slot SZ.

[0076] In the following text, reference will be made to Figures 8 to 10 An example of the second winding unit 200 of this disclosure is described in more detail.

[0077] Embodiments of this disclosure will be described for application to a standard pitch motor having 8 poles, 6 radial winding layers, and 9 pitch. For example... Figure 8 As shown, the second winding unit 200 may include a fourth wire 210, a fifth wire 220, and a sixth wire 230 wound in parallel with each other. The fourth wire 210, the fifth wire 220, and the sixth wire 230 may be wound three times around the stator St in the circumferential direction, and wound on the second layer L-2, the fourth layer L-4, and the sixth layer L-6, respectively.

[0078] Furthermore, the pitch of the layer jump portion 600 of the winding included in the second winding unit 200 can be selected from any of the pitches of 8, 9, and 10. For example, as Figure 9 As shown, the pitch P7 of the layer jump portion 600 of the fourth wire 210, which intersects with the second layer L-2 and the fourth layer L-4, can be 8; the pitch P8 of the layer jump portion 600 of the fifth wire 220 can be 9; and the pitch P9 of the layer jump portion 600 of the sixth wire 230 can be 10. Furthermore, as... Figure 10 As shown, the pitch P10 of the layer jump portion 600 of the fourth wire 210, which intersects with the fourth layer L-4 and the sixth layer L-6, can be 9; the pitch P11 of the layer jump portion 600 of the fifth wire 220 can be 10; and the pitch P12 of the layer jump portion 600 of the sixth wire 230 can be 8.

[0079] More specifically, the fourth wire 210 of the second winding unit 200 can be configured such that, in the second layer L-2, the jumper portion 400 included in the single-layer portion 500 is formed with a standard pitch of 9; in the second layer L-2, the slot insertion portion 300 at one end of the fourth wire 210 is fully inserted into the Xth slot SX; in the fourth layer L-4, the jumper portion 400 included in the single-layer portion 500 is formed with alternating pitches of 8 and 10, and contacts the layer jumper portion 600 extending from the second layer L-2. The slot insertion portion 300 is inserted into the Y slot SY, and then alternately inserted into the Z slot SZ and the Y slot SY; in the sixth layer L-6, the jump portion 400 included in the single layer portion 500 is formed to have alternating pitches of 8 and 10, and the slot insertion portion 300 that contacts the layer jump portion 600 extending from the fourth layer L-4 is inserted into the Z slot SZ, and then alternately inserted into the Y slot SY and the Z slot SZ; and the slot insertion portion 300 at the other end of the fourth wire 210 is inserted into the Y slot SY.

[0080] Furthermore, the fifth wire 220 of the second winding unit 200 can be configured such that, in the second layer L-2, the jumper portion 400 included in the single-layer portion 500 is formed with alternating pitches of 8 and 10, and the slot insertion portion 300 at one end is inserted into the Y slot SY, and then alternately inserted into the Z slot SZ and the Y slot SY; in the fourth layer L-4, the jumper portion 400 included in the single-layer portion 500 is formed with alternating pitches of 8 and 10, and the slot insertion portion 300 that contacts the layer jumper portion 600 extending from the second layer L-2 is inserted into the Z slot SZ, and then alternately inserted into the Y slot SY and the Z slot SZ; and in the sixth layer L-6, the jumper portion 400 included in the single-layer portion 500 is formed with a standard pitch of 9, and all the slot insertion portions 300 in the sixth layer L-6 that contact the layer jumper portion 600 extending from the fourth layer L-4 are inserted into the X slot SX. That is, the slot insertion part 300 at the other end of the fifth wire 220 can be inserted into the Xth slot SX.

[0081] Furthermore, the sixth wire 230 of the second winding unit 200 can be configured such that, in the second layer L-2, the jumper portion 400 included in the single-layer portion 500 is formed to alternately have pitches of 8 and 10, and the slot insertion portion 300 at one end is inserted into the Z slot SZ, and then alternately inserted into the Y slot SY and the Z slot SZ; in the fourth layer L-4, the jumper portion 400 included in the single-layer portion 500 is formed to have a standard pitch, and is connected to the layer jumper portion extending from the second layer L-2. All slot insertion portions 300 in the fourth layer L-4 with 600 contact are inserted into the X slot SX; in the sixth layer L-6, the jump portion 400 included in the single layer portion 500 is formed to have alternating pitches of 8 and 10, and the slot insertion portion 300 that contacts the layer jump portion 600 extending from the fourth layer L-4 is inserted into the Y slot SY, and then alternately inserted into the Z slot SZ and the Y slot SY; and the slot insertion portion 300 at the other end of the sixth wire 230 can be inserted into the Z slot SZ.

[0082] The connection relationship between the first winding unit 100 and the second winding unit 200 of this disclosure will be described in more detail below.

[0083] When analyzing the back electromotive force phase and inductance balance in the above arrangement of the first winding unit 100 and the second winding unit 200, with the first wire 110 and the fourth wire 210 connected to each other, the number of slots in which the first wire 110 is wound in the first layer L-1, the third layer L-3, and the fifth layer L-5 is 8, and the number of slots in which the fourth wire 210 is wound in the second layer L-2, the fourth layer L-4, and the sixth layer L-6 is 8. Therefore, it can be confirmed that the inductance phase is balanced. Furthermore, it can be confirmed that the first wire 110 is wound 8 times in the Xth slot SX of the first layer L-1, and 4 times in the Yth slot SY and the Zth slot SZ of the third layer L-3 and the fifth layer L-5; the fourth wire 210 is wound 8 times in the Xth slot SX of the second layer L-2, and 4 times in the Yth slot SY and the Zth slot SZ of the fourth layer L-4 and the sixth layer L-6. Therefore, it can be confirmed that the total number of windings wound in the X slot SX, Y slot SY and Z slot SZ of the series-connected windings composed of the first wire 110 and the fourth wire 210 is 16, and thus the back electromotive force phase is also balanced.

[0084] Furthermore, it can be confirmed that when the second wire 120 and the fifth wire 220 are connected to each other, the number of slots in which the second wire 120 is wound in the first layer L-1, the third layer L-3, and the fifth layer L-5 is 8, and the number of slots in which the fifth wire 220 is wound in the second layer L-2, the fourth layer L-4, and the sixth layer L-6 is 8, thus the inductance phase is balanced. Furthermore, it can be confirmed that the second wire 120 is wound 4 times each in the Y-th slot SY and the Z-th slot SZ in the first layer L-1 and the third layer L-3, and 8 times in the X-th slot SX in the fifth layer L-5; the fifth wire 220 is wound 4 times each in the Y-th slot SY and the Z-th slot SZ in the second layer L-2 and the fourth layer L-4, and 8 times in the X-th slot SX in the sixth layer L-6. Therefore, it can be confirmed that the total number of windings wound in the X slot SX, Y slot SY and Z slot SZ of the series-connected windings composed of the second wire 120 and the fifth wire 220 is 16, and thus the back electromotive force phase is also balanced.

[0085] Furthermore, it can be confirmed that when the third wire 130 and the sixth wire 230 are connected to each other, the number of slots in which the third wire 130 is wound in the first layer L-1, the third layer L-3, and the fifth layer L-5 is 8, and the number of slots in which the sixth wire 230 is wound in the second layer L-2, the fourth layer L-4, and the sixth layer L-6 is 8, thus the inductance phase is balanced. Furthermore, it can be confirmed that the third wire 130 is wound 4 times in the Y-th slot SY and the Z-th slot SZ in the first layer L-1 and the fifth layer L-5, and 8 times in the X-th slot SX in the third layer L-3; and the sixth wire 230 is wound 4 times in the Y-th slot SY and the Z-th slot SZ in the second layer L-2 and the sixth layer L-6, and 8 times in the X-th slot SX in the fourth layer L-4. Therefore, it can be confirmed that the total number of windings wound in the X slot SX, Y slot SY and Z slot SZ of the series-connected windings composed of the third wire 130 and the sixth wire 230 is 16, and thus the back electromotive force phase is also balanced.

[0086] Furthermore, according to the above arrangement, the other end of the first wire 110 of the first winding unit 100 and the other end of the fourth wire 210 of the second winding unit 200 can be pulled out from the Y slot SY of the adjacent slot group Sg and connected to each other; the other end of the second wire 120 of the first winding unit 100 and the other end of the fifth wire 220 of the second winding unit 200 can be pulled out from the X slot SX of the adjacent slot group Sg and connected to each other; and the other end of the third wire 130 of the first winding unit 100 and the other end of the sixth wire 230 of the second winding unit 200 can be pulled out from the Z slot SZ of the adjacent slot group Sg and connected to each other. Therefore, the various series connection portions do not need to be twisted or overlapped, allowing the windings to directly contact each other and be soldered without terminal assemblies.

[0087] According to the continuous winding assembly of this disclosure having the above configuration, the windings between parallel circuits connected to form series windings can have a specific pitch and shape that satisfies the balance of back electromotive force and inductance, and at the same time, the wires to be connected can be positioned in the same phase so that they can be welded together without twisting, thereby easily forming series windings without terminal assemblies.

[0088] The technical spirit of this disclosure should not be construed as limited to the embodiments described above. Not only is the scope of application diverse, but various modifications can be made by those skilled in the art without departing from the spirit of this disclosure as claimed in the claims. Therefore, any improvements and variations that are obvious to those skilled in the art fall within the scope of this disclosure.

Claims

1. A continuous winding assembly for a stator, wherein for each pole of a rotor, the stator includes a predetermined slot group comprising a plurality of slots arranged adjacent to and continuously positioned relative to the pole of the rotor, the continuous winding assembly comprising: A first winding unit, comprising a plurality of windings extending in the circumferential direction of the stator, wherein each of the plurality of windings in the first winding unit is inserted into and wound in a corresponding slot included in the predetermined slot group, and the plurality of windings in the first winding unit are arranged in parallel; and A second winding unit, electrically connected to the first winding unit and comprising a plurality of windings extending in the circumferential direction of the stator, wherein each of the plurality of windings in the second winding unit is inserted into and wound in a corresponding slot included in the predetermined slot group, and the plurality of windings in the second winding unit are arranged in parallel. In this configuration, each winding of the first winding unit and each winding of the second winding unit are connected in a one-to-one manner and are in direct contact with each other. In this configuration, each winding in the first winding unit and the second winding unit is inserted radially into slots in multiple layers, and includes multiple slot insertion portions and jump portions. The slot insertion portions are inserted into the slots and extend in the axial direction of the motor. The jump portions are disposed between the slot insertion portions and extend at a predetermined pitch. In each of the plurality of layers, At least any one of the plurality of windings included in the first winding unit has a jump portion with a standard pitch, and At least one of the plurality of windings included in the second winding unit has a jump section with a standard pitch.

2. The continuous winding assembly according to claim 1, wherein, The end of the second winding unit is inserted into a slot adjacent to the slot into which the end of the winding of the first winding unit is inserted.

3. The continuous winding assembly according to claim 1, in, Each winding in the first winding unit and the second winding unit comprises at least two single-layer portions wound on a single layer, and Each of the at least two single-layer portions includes a slot insertion portion inserted into each slot group adjacent to all poles, and at least one layer jump portion disposed between the two or more single-layer portions and intersecting with two or more of the plurality of layers.

4. The continuous winding assembly according to claim 3, wherein, Based on the standard pitch x, the jumper portion included in the first winding unit and the second winding unit has any pitch value selected from x, x-1, and x+1, and Each single-layer section is formed only by jump sections with a pitch of x, or by alternating jump sections with pitches of x-1 and x+1.

5. The continuous winding assembly according to claim 3, wherein, Based on the standard pitch x, the jumper included in the first winding unit and the second winding unit has any pitch value selected from x, x-1 and x+1.

6. The continuous winding assembly according to claim 3, wherein, The total number of layers of the first winding unit and the second winding unit is a multiple of 3.

7. The continuous winding assembly according to claim 6, wherein, The number N1 of layer jump portions in each of the plurality of windings in the first winding unit and the number N2 of layer jump portions in each of the plurality of windings in the second winding unit follow the following equation: Equations: N1 = p(k-1), N2 = q(mk-1) Wherein, N1 is the number of layer jump portions of the plurality of windings of the first winding unit, N2 is the number of layer jump portions of the plurality of windings of the second winding unit, p and q are constants, which are integers greater than or equal to 1, m is the total number of layers, which is a multiple of 3, and k is the odd number of layers in the radial direction.

8. The continuous winding assembly according to claim 3, wherein, Based on the total number of poles of the motor being S, the at least one layer jump portion is formed between the slot insertion portion of each winding wound with the nSth turn and the slot insertion portion of each winding wound with the nS+1th turn, where n is a natural number.

9. The continuous winding assembly according to claim 3, in, The single-layer portion of the first winding unit is wound radially on an odd number of layers, and In this configuration, the single-layer portion of the second winding unit is wound on an even number of layers in the radial direction.

10. The continuous winding assembly according to claim 3, wherein, The layer skip portions of the first winding unit and the second winding unit pass through either an odd or even number of layers in the radial direction.

11. A motor comprising the continuous winding assembly according to claim 1.

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