Search

CN-122001128-A - Continuous winding assembly

CN122001128ACN 122001128 ACN122001128 ACN 122001128ACN-122001128-A

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 the 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 allows each wire connected to be in the same phase to allow welding without twisting, thereby having the effect of easily forming a series winding without a terminal assembly.

Inventors

  • LI ZAIMIN

Assignees

  • 现代摩比斯株式会社

Dates

Publication Date
20260508
Application Date
20251031
Priority Date
20241107

Claims (10)

  1. 1. A continuous winding assembly for application to a stator, the stator including, for each pole of a rotor, a predetermined set of slots adjacent to and disposed at successive positions of the pole of the rotor, the continuous winding assembly comprising: 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 slots included in a slot group, and A second winding portion electrically connected to the first winding portion and 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 the slots included in the slot group, Wherein each winding of the first winding portion and each winding of the second winding portion are connected to each other in a one-to-one correspondence manner, but are connected to each other by being in direct contact with each other, The windings are inserted into the slots by forming a plurality of layers in the radial direction, Each of the windings included in the first winding portion does not cross each other in the same layer, and Each winding included in the second winding portion does not cross each other within the same layer.
  2. 2. The continuous winding assembly of claim 1, wherein the end of the second winding portion is inserted into a slot group adjacent to the slot group into which the end of the winding of the first winding portion is inserted.
  3. 3. The continuous winding assembly of claim 1, wherein the winding comprises: A plurality of slot insertion portions inserted into the slots and extending in an axial direction of the motor; a jumping portion provided between the plurality of slot insertion portions and extending at a predetermined pitch; At least two single-layer portions wound on one of the layers and including groove insertion portions inserted one-to-one in each groove group adjacent to all of the poles, and At least one layer jump portion disposed between two or more of the single layer portions and spanning two or more of the plurality of layers.
  4. 4. The continuous winding assembly according to claim 3, wherein the skip part included in the first winding part and the second winding part has one pitch value selected from 7 pitches, 9 pitches, and 11 pitches, The skip parts of each parallel winding included in the first winding part do not cross each other, and The skip parts of each parallel winding included in the second winding part do not cross each other.
  5. 5. A continuous winding assembly according to claim 3, wherein the layer jump portions included in the first winding section and the second winding section have one pitch value selected from 8 pitch, 9 pitch and 10 pitch.
  6. 6. A continuous winding assembly according to claim 3, wherein the total number of layers in which the first winding portion and the second winding portion are wound is a multiple of 3.
  7. 7. The continuous winding assembly according to claim 6, wherein the number of layer jump parts N1 included in each parallel winding of the first winding part and the number of layer jump parts N2 included in each parallel winding of the second winding part follow the following equation, Equation: Here, N1 is the number of layer jump parts of the winding of the first winding part, N2 is the number of layer jump parts of the winding of the second winding part, p, 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 based on the radial direction.
  8. 8. The continuous winding assembly of claim 3, wherein the layer jump portion is formed between a slot insertion portion of each winding nS-th and a slot insertion portion of each winding ns+1-th times when a total number of poles of the motor is S, n being a natural number.
  9. 9. The continuous winding assembly of claim 3, wherein the single layer portion of the first winding portion is wound on an odd number of layers based on the radial direction, and The single-layer portion of the second winding portion is wound on an even number of layers based on the radial direction.
  10. 10. A continuous winding assembly according to claim 3, wherein the layer jump section traverses an odd or even layer in the radial direction.

Description

Continuous winding assembly Technical Field The following disclosure relates to a continuous winding assembly, and more particularly, to a continuous winding assembly wound on a motor stator. Background In motor design, the use of each winding maximizes slot fill, thereby achieving miniaturization of the motor. When each winding is inserted into a slot, unlike a round wire, there is a layer concept, and inductance varies from layer to layer. Furthermore, since the back emf phase is different for each slot, a balanced winding layout design is essential to eliminate the inductance difference and back emf phase difference between the parallel connections when parallel circuits are applied. When such an imbalance occurs, a circulating current may be generated, which may cause the motor to overheat. Therefore, the rules for arranging coils in slots and layers are very limited. Like hairpin windings, continuous windings also require a winding layout that takes into account inductance balance and back emf phase balance. However, the hairpin windings should be arranged at the same pitch due to the limitation of the welded portion, whereas the continuous windings have the advantage of a high degree of freedom in the pitch arrangement on both sides of the crown due to the lack of welded portions. However, this degree of freedom may also be a disadvantage in increasing design complexity. In particular, when a terminal assembly is required, it may be disadvantageous in terms of cost and quality due to increased material costs, increased number of welding operations, and process complexity. When the windings between the parallel circuits are connected using continuous windings to form series windings, there are cases where the connection structure of the windings between the parallel circuits is shifted in order to maintain the balance between the counter electromotive force and the inductance, as shown in fig. 1 and 2. In other words, as shown in fig. 2, when the windings are arranged, the windings of the same phase (same color) need to be connected to each other, and thus there is a problem in that it is necessary to use a terminal assembly to achieve this. [ Related art literature ] [ Patent literature ] (Patent document 1) U.S. patent No. 7269888"Method of making cascaded multilayer stator winding with interleaved transitions (method of manufacturing a cascaded multilayer stator winding with staggered transitions)". Disclosure of Invention Embodiments of the present disclosure relate to a continuous winding assembly that satisfies the balance of back electromotive force and inductance by having windings between each parallel circuit interconnected to form a series winding take a specific pitch and shape, and allows each wire connected to be in the same phase to allow welding without distortion, thus easily forming a series winding without a terminal assembly. Means for solving the problems In one general aspect, there is provided a continuous winding assembly applied to a stator including, for each pole of a rotor, a predetermined slot group adjacent to the pole of the rotor and disposed at a continuous position 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 one-to-one insertion into slots included in the slot group, 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 one-to-one insertion into slots included in the slot group, 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 manner but being 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 portion including a plurality of windings intersecting each other within the same winding portion not including the same winding within the first winding portion and not intersecting each other within the same layer. The end of the second winding portion may be inserted into a slot group adjacent to a slot group into which the end of the winding of the first winding portion is inserted. The winding may include a plurality of slot insertion portions inserted into the slots and extending in an axial direction of the motor, a skip portion disposed between the plurality of slot insertion portions and extending at a predetermined pitch, at least two single-layer portions wound on one of the plurality of layers and may include a slot insertion portion inserted one-to-one in each slot group adjacent to all the poles, and at least one layer skip portion disposed between and spanning