Continuous winding assembly

Abstract

The present disclosure relates to a continuous winding assembly, and more particularly, to a continuous winding assembly wound on a motor stator. The continuous winding assembly of the present disclosure satisfies balance of back electromotive force and inductance by having windings between each parallel circuit, the windings being interconnected to form a series winding and adopting a specific pitch and shape, and the continuous winding assembly of the present disclosure allows each connected wire to be located in the same phase to allow welding without twisting, therefore, the series winding can be easily formed without a terminal assembly.

Description

Technical Field

[0001] The following 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, using individual windings maximizes slot fill rate, thus enabling motor miniaturization. Unlike round wire, when inserting each winding into a slot, there is a layer concept, and the inductance varies from layer to layer. Furthermore, since the back electromotive force (EMF) phase differs for each slot, a balanced winding layout is essential to eliminate inductance and back EMF phase differences between parallel circuits. When this imbalance occurs, circulating currents can be generated, potentially leading to motor overheating. Therefore, the rules governing the arrangement of coils in slots and layers are quite limited.

[0003] Similar to hairpin windings, continuous windings also require a winding layout that considers inductance balance and back EMF phase balance. However, due to restrictions on solder joints, hairpin windings must be arranged with a uniform pitch, while continuous windings, lacking solder joints, offer greater freedom in pitch arrangement on both sides of the crown. However, this freedom can also be a drawback, increasing design complexity. In particular, when terminal assemblies are required, they can be disadvantageous in terms of cost and quality due to increased material costs, a greater number of soldering operations, and increased process complexity.

[0004] Additionally, when using continuous windings to connect the windings of parallel circuits to form a series winding, such as Figure 1 and Figure 2 As shown, there exists a situation where the connection structure of the windings in a parallel circuit is misaligned in order to maintain the balance of back electromotive force and inductance. In other words, as... Figure 2 As shown, when arranging windings, it is necessary to connect windings of the same phase (same color) to each other, so there is a problem that terminal assemblies must be used to achieve this.

[0005] [Related Technical Documents]

[0006] [Patent Literature]

[0007] (Patent Document 1) US Patent No. 7269888 "Method of making cascaded multilayerstator winding with interleaved transitions". Summary of the Invention

[0008] Embodiments of this disclosure relate to a continuous winding assembly that satisfies the balance of back electromotive force and inductance by employing specific pitch and shape between the windings of each parallel circuit interconnected to form a series winding, and allows each connected wire to be in the same phase to allow for non-distorted soldering, thereby facilitating the formation of a series winding without terminal assemblies.

[0009] Problem-solving methods

[0010] In one general aspect, a continuous winding assembly for a stator is provided, for each pole of a rotor, the stator including a predetermined group of slots adjacent to and disposed at consecutive positions of the pole of the rotor, the continuous winding assembly including: a first winding portion including a plurality of windings extending in a circumferential direction of the stator and arranged in parallel with each other, each winding being wound by being inserted one-to-one into a slot included in the group of slots; and a second winding portion electrically connected to the first winding portion, including a plurality of windings extending in the circumferential direction of the stator and arranged in parallel with each other, each winding being wound by being inserted one-to-one into a slot included in the group of slots, each winding of the first winding portion and each winding of the second winding portion being connected to each other in a one-to-one correspondence, but connected to each other by direct contact with each other, the windings being inserted into the slots by forming a plurality of layers in a radial direction, each winding included in the first winding portion not crossing each other in the same layer, and each winding included in the second winding portion not crossing each other in the same layer.

[0011] The end of the second winding portion can be inserted into a slot adjacent to the slot into which the end of the first winding portion is inserted.

[0012] The winding may include: a plurality of slot inserts inserted into the slots and extending in the axial direction of the motor; a jumper disposed between the plurality of slot inserts and extending at a predetermined pitch; at least two single-layer portions wound on one of the plurality of layers, and the single-layer portion may include slot inserts inserted one-to-one in each slot group adjacent to all the poles; and at least one layer jumper disposed between two or more of the single-layer portions and spanning two or more of the plurality of layers.

[0013] The jump portions included in the first winding portion and the second winding portion may have a pitch value selected from 7 pitch, 9 pitch and 11 pitch, the jump portions included in each parallel winding in the first winding portion do not cross each other, and the jump portions included in each parallel winding in the second winding portion do not cross each other.

[0014] The layer jump portion included in the first winding portion and the second winding portion may have a pitch value selected from 8 pitch, 9 pitch and 10 pitch.

[0015] The total number of layers in which the first winding section and the second winding section are wound can be a multiple of 3.

[0016] The number N1 of the layer jump portions included in each parallel winding of the first winding section and the number N2 of the layer jump portions included in each parallel winding of the second winding section can follow the following equation.

[0017] Equation:

[0018] Wherein, N1 is the number of layer jump portions of the winding of the first winding section, N2 is the number of layer jump portions of the winding of the second winding section, p and q are constants, i.e., integers greater than or equal to 1, m is the total number of layers, i.e., a multiple of 3, and k is the odd number of layers based on the radial direction.

[0019] 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 for the nSth time and the slot insertion portion of each winding wound for the nS+1th time, where n is a natural number.

[0020] The single-layer portion of the first winding portion can be wound on an odd number of layers based on the radial direction, and the single-layer portion of the second winding portion can be wound on an even number of layers based on the radial direction.

[0021] The layer skip portion can traverse either odd or even layers based on the radial direction. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the winding structure and connection relationships of the prior art.

[0023] Figure 2 It is a partial perspective view showing the connection relationship between windings in the prior art.

[0024] Figure 3 This is a schematic diagram illustrating the winding structure and connection relationship of this disclosure.

[0025] Figure 4This is a partial plan view showing the layers of the windings of this disclosure.

[0026] Figure 5 This is a schematic diagram showing a portion of the arrangement of a single-layer portion of the winding of the present disclosure.

[0027] Figure 6 This is a schematic diagram showing the layer jump portion of the winding of this disclosure.

[0028] Figure 7 This is a schematic diagram showing a portion of the arrangement of the first winding section of this disclosure.

[0029] Figure 8 This is a schematic diagram showing a portion of the arrangement of the second winding section of this disclosure.

[0030] Figure 9 This is a schematic diagram illustrating the connection relationship between the first winding and the second winding of this disclosure.

[0031] Figure 10 This is a partial perspective view showing the connection relationship between the first winding and the second winding of this disclosure.

[0032] [Detailed Description of Key Elements]

[0033] 1000: Continuous winding assembly

[0034] 100: First winding section

[0035] 110: First wire

[0036] 120: Second wire

[0037] 130: Third wire

[0038] 200: Second winding section

[0039] 210: Fourth wire

[0040] 220: Fifth wire

[0041] 230: Sixth wire

[0042] 300: Slot insertion part

[0043] 400: Jump Section

[0044] 500: Single-layer section

[0045] 600: Layer Jump Section

[0046] L-1: First Layer

[0047] L-2: Second Layer

[0048] L-3: Third Floor

[0049] L-4: Fourth Floor

[0050] L-5: Fifth Floor

[0051] L-6: Sixth Floor

[0052] St: Stator

[0053] SG: Slot assembly

[0054] SX: X slot

[0055] SY: Y slot

[0056] SZ: Z-groove Detailed Implementation

[0057] The technical concept of this disclosure will be described in more detail below with reference to the accompanying drawings. The terms and words used in this specification and claims should not be construed as having a general or dictionary meaning, but rather as meaning and concept consistent with the technical concept of this disclosure, based on the principle that the inventors may appropriately define the concepts of terms in order to best describe their invention.

[0058] 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.

[0059] The continuous winding assembly 1000 of this disclosure is applied to a stator St, wherein for each pole of the rotor, the stator St includes a predetermined group of slots SG adjacent to and disposed at consecutive positions of the poles of the rotor. For example... Figure 3 As shown, the continuous winding assembly 1000 may include a first winding portion 100 and a second winding portion 200. More specifically, the first winding portion 100 may include a plurality of windings extending in the circumferential direction of the stator St and wound by being inserted one-to-one into slots included in the slot group SG, and the second winding portion 200 may be electrically connected to the first winding portion 100 and includes a plurality of windings extending in the circumferential direction of the stator St and wound by being inserted one-to-one into slots included in the slot group SG.

[0060] In this configuration, the end of the second winding portion 200 can be inserted into a slot SG adjacent to the slot SG into which the ends of the windings of the first winding portion 100 are inserted, and the ends of the first winding portion 100 and the second winding portion 200 can be electrically connected to each other by welding. Furthermore, each winding included in the first winding portion 100 and the second winding portion 200 can be inserted radially into the slots to form multiple layers, with each winding in the first winding portion 100 and the second winding portion 200 wound together within the same layer without crossing each other. Therefore, the overlap between the first winding portion 100 and the second winding portion 200 can be minimized, and correspondingly, the width of the radial region to be wound can be reduced, thereby reducing the radial dimension of the motor system.

[0061] Alternatively, the number of layers of wire stacked in the groove can be set to a multiple of 3, starting from the innermost part of the groove. More specifically, such as... Figure 4 As shown, six layers can be set. The following explanation is based on six layers, with each layer named Layer 1 (L-1), Layer 2 (L-2), Layer 3 (L-3), Layer 4 (L-4), Layer 5 (L-5), and Layer 6 (L-6). Furthermore, the slot group SG can consist of three consecutive slots and can include an X slot (SX) located on one edge of the slot, a Y slot (SY) located in the center of the slot, and a Z slot (SZ) located on the other edge of the slot.

[0062] The following is for reference Figure 5 and Figure 6 The single-layer portion 500 and the layer-skipping portion 600 included in each winding of this disclosure will be described.

[0063] like Figure 5 As shown, each winding included in the first winding portion 100 and the second winding portion 200 may include a plurality of slot insertion portions 300 and jump portions 400. The plurality of slot insertion portions 300 are inserted into slots and extend along the axial direction of the motor, and the jump portions 400 are disposed between the slot insertion portions 300 and extend at a predetermined pitch. Furthermore, each winding may include at least two single-layer portions 500 wound in one layer. A single-layer winding portion may include a slot insertion portion 300 inserted into each slot group SG adjacent to all poles. In all the jump portions 400 included in the single-layer portion 500, the windings may not cross each other. That is, the pitches of the jump portions 400 of the windings arranged in parallel may be arranged in completely different regions, such as 7-pitch, 9-pitch (standard pitch), and 11-pitch. Therefore, the overlap between the first winding portion 100 and the second winding portion 200 can be minimized, and thus the width of the radial region to be wound can be reduced, thereby reducing the radial dimension of the motor system.

[0064] In addition, such as Figure 6As shown, at least one layer jump portion 600 can be disposed between two or more single-layer portions 500 and can span two or more layers. Each winding in the jump portion 400 included in the layer jump portion 600 can cross each other. The pitch of the layer jump portion 600 can be 8-pitch, 9-pitch, or 10-pitch. Therefore, even if the jump portion 400 in the single-layer portion 500 is formed with a non-standard pitch as described above, the ends of the first winding portion 100 and the second winding portion 200 connected to each other can be arranged on the same phase of the slot group SG. For example, the t1 end of the first winding portion 100 and the T1 end of the second winding portion 200 connected to each other can be wound on the X slot SX of the adjacent slot group SG, respectively.

[0065] More specifically, the single-layer portion 500 of the first winding section 100 can be wound radially on an odd number of layers. That is, when six layers are provided radially, the single-layer portion 500 of each parallel winding of the first winding section 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 section 200 can be wound radially on an even number of layers. That is, when six layers are provided radially, the single-layer portion 500 of each parallel winding of the second winding section 200 can be wound on the second layer L-2, the fourth layer L-4, and the sixth layer L-6.

[0066] In this case, the layer skip portion 600 included in the first winding portion 100 and the second winding portion 200 can be configured to traverse at least one of the odd-numbered or even-numbered 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, a layer skip portion 600 having a single layer portion 500 in the first layer L-1 and a single layer portion 500 in the third layer L-3 of the first winding portion 100 can be formed to traverse the second layer L-2 therebetween.

[0067] Furthermore, the number N1 of layer jump portions 600 included in each parallel winding of the first winding portion 100 can follow the following equation 1.

[0068] Equation 1:

[0069] Here, N1 is the number of layer skip portions 600 of the winding of the first winding section 100, p is a constant (an integer greater than or equal to 1), and k is an odd number of layers in the radial direction. That is, when p is 1, a continuous single-layer section 500 is formed, which includes slot insertion portions 300 corresponding to all poles in the circumferential direction; when p is greater than or equal to 2, a continuous single-layer section 500 is formed, which includes slot insertion portions 300 corresponding to only a portion of poles in the circumferential direction (e.g., only 1 / 2 or 1 / 4 of the winding in the circumferential direction), thereby providing a denser arrangement of the layer skip portions 600.

[0070] Furthermore, the number N2 of layer jump portions included in each parallel winding of the second winding section 200 can follow the following equation 2.

[0071] Equation 2:

[0072] Here, N2 is the number of layer skip portions 600 of the winding of the second winding section 200, q is a constant (an integer greater than or equal to 1), m is the total number of layers (a multiple of 3), and k is the odd number of layers in the radial direction. That is, when q is 1, a continuous single-layer section 500 is formed, which includes slot insertion portions 300 corresponding to all poles in the circumferential direction, and when q is greater than or equal to 2, a continuous single-layer section 500 is formed, which includes slot insertion portions 300 corresponding to only a portion of poles in the circumferential direction (e.g., only 1 / 2 or 1 / 4 of the winding in the circumferential direction), thereby arranging the layer skip portions 600 more densely.

[0073] 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 where each winding is wound for the nSth time and the slot insertion portion 300 where each winding is wound for the (nS+1)th time. In this case, n is a natural number. More specifically, when the total number of poles of the motor is 8, the layer skip portion 600 can be formed between the slot insertion portion 300 where each winding is wound for a multiple of 8 (e.g., the 8th, 16th, 24th, etc.) and the adjacent slot insertion portion 300 where the winding is wound for the 9th, 17th, 25th, etc.

[0074] In the following text, reference will be made to Figure 7 The first winding portion 100 of this disclosure will be described in more detail.

[0075] like Figure 7 As shown, the first winding portion 100 may include a first wire 110, a second wire 120, and a third wire 130 wound in parallel with each other. Each of 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 may be wound on the first layer L-1, the third layer L-3, and the fifth layer L-5, respectively. In this case, the first wire 110, the second wire 120, and the third wire 130 may be configured such that the jump portions 400 included in the single layer portion 500 do not cross or overlap with each other, and the jump portions 400 included in the layer jump portion 600 may be configured to cross each other.

[0076] More specifically, the first wire 110 of the first winding section 100 may be provided with jumpers 400 arranged alternately with 7-pitch and 11-pitch in the single-layer portion 500 of the first layer L-1. The slot insertion portion 300 at one end of the first wire 110 may be inserted into the X slot SX, and subsequent slot insertion portions 300 may be alternately inserted into the Z slot SZ and X slot SX. The jumpers 400 in the single-layer portion 500 of the third layer L-3 may be provided with jumpers 400 arranged alternately with 7-pitch and 11-pitch. The slot insertion part 300 that contacts the extended layer jump portion 600 can be inserted into the Z slot SZ, and then the slot insertion part 300 can be alternately inserted into the X slot SX and the Z slot SZ. The jump portion 400 in the single layer portion 500 in the fifth layer L-5 can be set with a standard pitch. All slot insertion parts 300, including the slot insertion part 300 that contacts the layer jump portion 600 extending from the third layer L-3, are inserted into the Y slot SY, and the slot insertion part 300 at the other end of the first wire 110 can be inserted into the Y slot SY.

[0077] Furthermore, the second wire 120 of the first winding section 100 can be provided with a standard pitch, including the jumper portion 400 in the single-layer portion 500 of the first layer L-1. The slot insertion portion 300 at one end of the second wire 120 can be completely wound onto the Y slot SY. In the third layer L-3, the jumper portion 400 included in the single-layer portion 500 can be alternately provided with 7-pitch and 11-pitch. The slot insertion portion 300 that contacts the layer jumper portion 600 extending from the first layer L-1 can be inserted into the X slot. In slot SX, the slot insertion part 300 can be alternately inserted into slot Z SZ and slot X SX. In the fifth layer L-5, the jump part 400 included in the single layer portion 500 can be set with a standard pitch. The slot insertion part 300 that contacts the layer jump part 600 extending from the third layer L-3 can be inserted into slot Z SZ. Then the slot insertion part 300 can be alternately inserted into slot X SX and slot Z SZ. The slot insertion part 300 at the other end of the second wire 120 is inserted into slot X SX.

[0078] Additionally, the third wire 130 of the first winding section 100 can be provided with a jumper section 400 arranged alternately with 7-pitch and 11-pitch in the single-layer portion 500 of the first layer L-1. The slot insertion portion 300 at one end of the third wire 130 can be inserted into the Z slot SZ, and then the slot insertion portion 300 can be alternately inserted into the X slot SX and the Z slot SZ. In the third layer L-3, the jumper section 400 included in the single-layer portion 500 can be provided with a standard pitch, including the layer jumper section 600 extending from the first layer L-1. All slot insertion parts 300, including the contact slot insertion part 300, can be inserted into the Y slot SY. In the fifth layer L-5, the jump part 400 included in the single layer part 500 can be alternately arranged with a 7-pitch and an 11-pitch. The slot insertion part 300 that contacts the layer jump part 600 extending from the third layer L-3 can be inserted into the X slot SX. Then the slot insertion part 300 can be alternately inserted into the Z slot SZ and the X slot SX. The slot insertion part 300 at the other end of the third wire 130 can be inserted into the Z slot SZ.

[0079] In the following text, reference will be made to Figure 8 The second winding section 200 of this disclosure will be described in more detail.

[0080] like Figure 8 As shown, the second winding portion 200 may include a fourth wire 210, a fifth wire 220, and a sixth wire 230 wound in parallel with each other. Each of 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, respectively wound on the second layer L-2, the fourth layer L-4, and the sixth layer L-6. In this case, the fourth wire 210, the fifth wire 220, and the sixth wire 230 may be configured such that the jump portions 400 included in the single-layer portion 500 do not cross or overlap with each other, and the jump portions 400 included in the layer jump portions 600 may be configured to cross each other.

[0081] More specifically, the fourth wire 210 of the second winding section 200 may have a skip section 400 arranged alternately with 7-pitch and 11-pitch in the single-layer portion 500 of the second layer L-2. One end of the fourth wire 210 has a slot insertion portion 300 that can be inserted into the X slot SX, and subsequent slot insertion portions 300 can be alternately inserted into the Z slot SZ and X slot SX. The skip section 400 in the single-layer portion 500 of the fourth layer L-4 may also have skip sections 400 arranged alternately with 7-pitch and 11-pitch, similar to those from the second layer L- The slot insertion part 300 that contacts the extended layer jump portion 600 can be inserted into the Z slot SZ, and then the slot insertion part 300 can be alternately inserted into the X slot SX and the Z slot SZ. The jump portion 400 in the single layer portion 500 in the sixth layer L-6 can be set with a standard pitch. All slot insertion parts 300, including the slot insertion part 300 that contacts the layer jump portion 600 extending from the fourth layer L-4, are inserted into the Y slot SY, and the slot insertion part 300 at the other end of the fourth wire 210 can be inserted into the Y slot SY.

[0082] Furthermore, the fifth wire 220 of the second winding section 200 can be provided with a standard pitch, including the jumper portion 400 in the single-layer portion 500 of the second layer L-2. The slot insertion portion 300 at one end of the fifth wire 220 can be completely wound onto the Y slot SY. The jumper portion 400 in the single-layer portion 500 of the fourth layer L-4 can be provided with alternating 7-pitch and 11-pitch configurations. The slot insertion portion 300 that contacts the layer jumper portion 600 extending from the second layer L-2 can be inserted into the X slot. In SX, the slot insertion part 300 can be alternately inserted into the Z slot SZ and the X slot SX. In the sixth layer L-6, the jump part 400 included in the single layer portion 500 can be set with a standard pitch. The slot insertion part 300 that contacts the layer jump part 600 extending from the fourth layer L-4 can be inserted into the Z slot SZ. Then the slot insertion part 300 can be alternately inserted into the X slot SX and the Z slot SZ. The slot insertion part 300 at the other end of the fifth wire 220 can be inserted into the X slot SX.

[0083] Additionally, the sixth wire 230 of the second winding section 200 can be provided with a jumper section 400 arranged alternately with 7-pitch and 11-pitch in the single-layer portion 500 of the second layer L-2. The slot insertion portion 300 at one end of the sixth wire 230 can be inserted into the Z slot SZ, and then the slot insertion portion 300 can be alternately inserted into the X slot SX and the Z slot SZ. The jumper section 400 in the single-layer portion 500 of the fourth layer L-4 can be provided with a standard pitch, including the layer jumper section 60 extending from the second layer L-2. All slot insertion parts 300, including the slot insertion part 300 with zero contact, can be inserted into the Y slot SY. In the sixth layer L-6, the jump part 400 included in the single layer portion 500 can be alternately arranged with a pitch of 7 and a pitch of 11. The slot insertion part 300 that contacts the layer jump part 600 extending from the fourth layer L-4 can be inserted into the X slot SX. Then, the slot insertion part 300 can be alternately inserted into the Z slot SZ and the X slot SX. The slot insertion part 300 at the other end of the sixth wire 230 can be inserted into the Z slot SZ.

[0084] In the following text, reference will be made to Figure 9 and Figure 10 The connection relationship between the first winding portion 100 and the second winding portion 200 of this disclosure will be described in more detail.

[0085] When analyzing the back electromotive force phase and inductance balance in the arrangement of the first winding section 100 and the second winding section 200, when the first wire 110 and the fourth wire 210 are connected to each other, the number of slots for winding the first wire 110 is 8 in all of the first layer L-1, the third layer L-3 and the fifth layer L-5, and the number of slots for winding the fourth wire 210 is 8 in all of the second layer L-2, the fourth layer L-4 and the sixth layer L-6. Therefore, the inductance phase balance can be confirmed. Furthermore, it can be determined that the first wire 110 is wound 4 times in slot XSX of the first layer L-1, 4 times in slot ZSZ, 4 times in slot XSX of the third layer L-3, 4 times in slot ZSZ, and 8 times in slot YSY of the fifth layer L-5. Similarly, the fourth wire 210 is wound 4 times in slot XSX of the second layer L-2, 4 times in slot ZSZ, 4 times in slot XSX of the fourth layer L-4, 4 times in slot ZSZ, and 8 times in slot YSY of the sixth layer L-6. Therefore, it can be confirmed that the sum of the number of times the series winding composed of the first wire 110 and the fourth wire 210 is wound in slots XSX, YSY, and ZSZ is 16, thus the back electromotive force phase is also balanced.

[0086] Furthermore, when the second wire 120 and the fifth wire 220 are connected to each other, the number of slots for winding the second wire 120 is 8 in all layers L-1, L-3, and L-5, and the number of slots for winding the fifth wire 220 is 8 in all layers L-2, L-4, and L-6, thus confirming inductor phase balance. Additionally, it can be confirmed that the second wire 120 is wound 8 times in the Y slot SY in the first layer L-1, 4 times in the X slot SX in the third layer L-3, 4 times in the Z slot SZ, 4 times in the X slot SX in the fifth layer L-5, and 4 times in the Z slot SZ; and the fifth wire 220 is wound 8 times in the Y slot SY in the second layer L-2, 4 times in the X slot SX in the fourth layer L-4, 4 times in the Z slot SZ, and 4 times in the X slot SX in the sixth layer L-6. Therefore, it can be confirmed that the sum of the number of times the series winding composed of the second wire 120 and the fifth wire 220 is wound in slots XSX, YSY and ZSZ is 16, and thus the back electromotive force phase is also balanced.

[0087] With the third wire 130 and the sixth wire 230 connected to each other, the number of slots for winding the third wire 130 is 8 in all of the first layer L-1, the third layer L-3 and the fifth layer L-5, and the number of slots for winding the sixth wire 230 is 8 in all of the second layer L-2, the fourth layer L-4 and the sixth layer L-6, thus confirming the inductor phase balance. Furthermore, it can be confirmed that the third wire 130 is wound 4 times in slot XSX of the first layer L-1, 4 times in slot ZSZ, 8 times in slot YSY of the third layer L-3, 4 times in slot XSX, and 4 times in slot ZSZ of the fifth layer L-5. Similarly, the sixth wire 230 is wound 4 times in slot XSX of the second layer L-2, 4 times in slot ZSZ, 8 times in slot YSY of the fourth layer L-4, 4 times in slot XSX of the sixth layer L-6, and 4 times in slot ZSZ. Therefore, it can be confirmed that the sum of the number of times the series winding composed of the third wire 130 and the sixth wire 230 is wound in slots XSX, YSY, and ZSZ is 16, thus the back electromotive force phase is also balanced.

[0088] In addition, according to the above arrangement, such as Figure 9As shown, the other end of the first wire 110 of the first winding section 100 and the other end of the fourth wire 210 of the second winding section 200 can be led 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 section 100 and the other end of the fifth wire 220 of the second winding section 200 can be led out from the X slot SX of the adjacent slot group SG and connected to each other; the other end of the third wire 130 of the first winding section 100 and the other end of the sixth wire 230 of the second winding section 200 can be led out from the Z slot SZ of the adjacent slot group SG and connected to each other, and then combined. Therefore, as Figure 10 As shown, the ends of each winding can be adjacent, and each winding can be welded together by contacting each other.

[0089] The continuous winding assembly of this disclosure, having the above-described structure, satisfies back electromotive force and inductance balance by employing specific pitch and shape for the windings between parallel circuits interconnected to form a series winding, and allows the connected wires to be in the same phase, thereby enabling non-twisting welding, thus having the effect of easily forming a series winding without the need for terminal assemblies.

[0090] This disclosure should not be construed as limiting itself to the exemplary embodiments described above. This disclosure can be applied to various fields and can be modified by those skilled in the art without departing from the scope of this disclosure as claimed in the claims. Therefore, it will be apparent to those skilled in the art that such changes and modifications 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 group of slots adjacent to and disposed at consecutive positions of the pole of the rotor, the continuous winding assembly comprising: The first winding section includes a plurality of windings extending along the circumferential direction of the stator and arranged in parallel with each other, each winding being wound by being inserted one-to-one into a slot included in a slot group. as well as The second winding section, electrically connected to the first winding section, includes a plurality of windings extending along the circumferential direction of the stator and arranged parallel to each other, each winding being wound by being inserted one-to-one into a slot included in the slot group. In this configuration, each winding of the first winding section and each winding of the second winding section are connected to each other in a one-to-one correspondence, but are connected to each other through direct contact. The winding is inserted into the slot by forming multiple layers in the radial direction. Each winding in the first winding section does not cross each other within the same layer, and Each winding in the second winding section does not cross each other within the same layer.

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

3. The continuous winding assembly according to claim 1, wherein, The winding includes: Multiple slot insertion portions are inserted into the slots and extend along the axial direction of the motor; A jumping portion, which is disposed between the plurality of slot insertion portions and extends at a predetermined pitch; At least two single-layer portions, said at least two single-layer portions being wound around one of said plurality of layers, and said single-layer portions including slot insertion portions inserted one-to-one in each slot group adjacent to all said poles; and At least one layer jump portion, the at least one layer jump portion being disposed between two or more single-layer portions and spanning two or more of the plurality of layers.

4. The continuous winding assembly according to claim 3, wherein, The jumper portion included in the first winding portion and the second winding portion has a pitch value selected from 7 pitch, 9 pitch, and 11 pitch. The jump sections of each parallel winding included in the first winding section do not cross each other, and The jump sections of each parallel winding included in the second winding section do not cross each other.

5. The continuous winding assembly according to claim 3, wherein, The layer jump portion included in the first winding portion and the second winding portion has a pitch value selected from 8 pitch, 9 pitch and 10 pitch.

6. The continuous winding assembly according to claim 3, wherein, The total number of layers in which the first winding section and the second winding section are wound is a multiple of 3.

7. The continuous winding assembly according to claim 6, wherein, The number N1 of the layer jump portions included in each parallel winding of the first winding section and the number N2 of the layer jump portions included in each parallel winding of the second winding section follow the following equation. Equation: Here, N1 is the number of layer jump portions of the winding of the first winding section, N2 is the number of layer jump portions of the winding of the second winding section, p and q are constants that are integers greater than or equal to 1, m is the total number of layers that is a multiple of 3, and k is an odd number of layers based on the radial direction.

8. The continuous winding assembly according to claim 3, wherein, When the total number of poles of the motor is S, the layer jump portion is formed between the slot insertion portion of each winding wound for the nSth time and the slot insertion portion of each winding wound for the nS+1th time, where n is a natural number.

9. The continuous winding assembly according to claim 3, wherein, The single-layer portion of the first winding is wound on an odd number of layers based on the radial direction, and The single-layer portion of the second winding is wound on an even number of layers based on the radial direction.

10. The continuous winding assembly according to claim 3, wherein, The layer skip portion traverses either the odd or even number of layers along the radial direction.

Images