一种扁线电机发卡焊接端扭线结构及电机

Abstract

本实用新型提供一种扁线电机发卡焊接端扭线结构及电机，在定子绕组的焊接端，位于定子铁芯的径向最内层的焊接部设有直线部分，使得沿着定子铁芯的轴向方向，位于定子铁芯的径向最内层的焊接部的转弯部分高于位于与径向最内层相邻层的焊接部的转弯部分，避免各层的焊接部的根部扭转产生干涉。本实用新型的有益效果是设置有直线部分的焊接部的转弯部分高于不设置有直线部分的焊接部的转弯部分，直线部分与转弯部分相对应，其它层的焊接部的根部扭转逐层外扩，避免由于径向各层扭转根部干涉严重的问题，根部干涉变缓或无干涉，有效保护漆膜，达到不用占用定子内径。

Claims

1. A flat wire motor lamination welding end twist wire structure, characterized in that: At the welding end of the stator winding, the welding part located in the innermost radial layer of the stator core has a straight section, so that along the axial direction of the stator core, the turning part of the welding part located in the innermost radial layer of the stator core is higher than the turning part of the welding part located in the layer adjacent to the innermost radial layer, thus avoiding interference caused by the root torsion of the welding parts in each layer.

2. The flat wire motor lamination welded end twist wire structure of claim 1, wherein: The welded portion located in the innermost radial layer of the stator core and the welded portion in the layer adjacent to the innermost radial layer of the stator core are both provided with straight sections. Any two welded portions located in the layer adjacent to the innermost radial layer of the stator core are located on both sides of the circumference of a corresponding welded portion in the innermost radial layer of the stator core, so as to avoid interference caused by the root torsion of the welded portions in each layer.

3. The twisted wire structure of the flat wire motor lamination welding end according to claim 1 or 2, characterized in that: The straight portion is arranged along the axial direction of the stator core, and the straight portion is located outside the axial end of the stator core.

4. The flat wire motor lamination welding end twist wire structure of claim 3, wherein: One end of the straight section is connected to the interior of the corresponding groove, and the other end of the straight section is connected to the turning part of the welded part.

5. The flat wire motor lamination welding end twist wire structure of claim 4, wherein: The axial height of the straight section in the stator core is greater than the axial height of the bend portion of the welded portion in the stator core adjacent to the straight section.

6. The twisted wire structure for the hairpin welding end of the flat wire motor according to any one of claims 1-2 and 4-5, characterized in that: Along the radial direction of the stator core, the welded portions in each layer are provided with the straight portion, and along the radial direction from the innermost layer to the outermost layer of the stator core, the height of the straight portion of the welded portion in the axial direction of the stator core decreases sequentially.

7. The flat wire motor lamination end twist wire structure of any of claims 1-2 and 4-5, wherein: Along the radial direction from the innermost layer to the outermost layer of the stator core, the welded portion located from the innermost layer to the Nth radial layer has a straight section, while the welded portion along the radial direction from the N+1th layer to the outermost radial layer of the stator core does not have a straight section.

8. The flat wire motor lamination welded end twist wire structure of claim 1, wherein: Along the radial direction from the innermost to the outermost layer of the stator core, the welded portion located in the innermost layer has a straight section, while the welded portions in the other layers do not have a straight section.

9. An electric machine characterized by: Including the twisted wire structure of the hairpin welding end of the flat wire motor as described in any one of claims 1-8.

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