Method of manufacturing wave winding coil, and stator for rotating electrical machine
A technology of wave winding and manufacturing method, which is applied in the field of the manufacture of wave winding coils and the stator field of rotating electrical machines, and can solve the problems of electrical loss and the like
Pending Publication Date: 2021-10-01
HONDA MOTOR CO LTD
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- Description
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- Application Information
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Problems solved by technology
However, there is a problem that if the electrical balance between the parallel coils is not maintained, electrical loss will occur due to the generation of circulating current
Method used
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Embodiment Construction
[0060] Hereinafter, an embodiment of a method for manufacturing a wave winding coil according to the present invention will be described in detail with reference to the drawings. First, use figure 1 and figure 2 The wave winding coil and stator will be described. The wave winding coil 1 shown in this embodiment is formed into a long sheet shape along the Y direction in the figure using a plurality of parallel continuous wires 10 described below. The Y direction corresponds to figure 2 The circumferential direction of the stator core 20 is shown.
[0061] The stator 2 includes a stator core 20 and a wave winding coil 1 mounted on the stator core 20 . The stator core 20 has a plurality of teeth 22 protruding radially toward the central shaft hole 21 . Slots 23 are formed between adjacent teeth 22 , 22 . The present embodiment exemplifies the stator core 20 having 72 slots 23 .
[0062] The wave winding coil 1 has a plurality of slot arrangement portions 11 and a plurali...
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The problem addressed by the present invention is to provide a method of manufacturing a wave winding coil, which easily forms a shifted wave winding coil using a continuous wire without changing a folding method. In order to solve the problem, the method of manufacturing a waveform winding coil, which has a plurality of slot arrangement parts 11 arranged in slots 23 of a stator core 20 and turning parts 12 connecting adjacent slot arrangement parts 11, is formed using a continuous wire 10 having a U-shaped part 12A and a linear part 14. The method of manufacturing a waveform winding coil is provided with: a transposition shape forming step of forming transposition shapes in each of which, among at least the two continuous wires 10 belonging to an identical phase, the U-shaped part of one of the continuous wires 10 is disposed inside the U-shaped part 12A of the other one of the continuous wires 10; an inclined part forming step of causing the pairs of straight parts 14 of the continuous wires 10 respectively formed with the transposition shapes to be offset to form inclined parts 15 on the continuous wires 10; and a folding step of folding the continuous wires 10 formed with the inclined parts 15 to form the turning parts 12 and the slot disposition parts 11. The inclined part forming step and the folding step are alternately performed.
Description
technical field [0001] The invention relates to a manufacturing method of a wave winding coil and a stator of a rotating electric machine. Background technique [0002] Generally, a wave winding coil is known as a coil constituting a stator of a rotating electric machine such as a motor or a generator. The wave winding coil has a plurality of straight slot arrangement parts arranged in the slots of the stator core, and a plurality of adjacent slot arrangement parts connected to each other in the shape of a mountain or an arch on the outside of the stator core in the axial direction. turning portion, and the above-mentioned wave winding coil is formed into a wave shape along the circumferential direction of the stator core. [0003] As a wave winding coil, there is known a coil including three phases U-phase, V-phase, and W-phase each including a parallel coil. However, there is a problem that if the electrical balance between the parallel coils is not maintained, electrica...
Claims
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IPC IPC(8): H02K15/04H02K1/16H02K3/12
CPCH02K15/0478H02K1/16H02K3/12
Inventor 井手崇博渡辺昭博
Owner HONDA MOTOR CO LTD