Busbar assembly, motor, electrical product, and method for manufacturing busbar assembly

Patent metadata

Field	Value
Publication number	US-11632009-B2
Application number	US-202117199384-A
Country	US
Kind code	B2
Filing date	Mar 11, 2021
Priority date	Mar 13, 2020
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

Embodiments of this application provide a busbar assembly, a motor, an electrical product, and a method for manufacturing a busbar assembly. The busbar assembly includes a busbar for conducting electricity and a busbar holder for supporting the busbar. The busbar extends in a circumferential direction, a height of the busbar in an axial direction is greater than a thickness in a radial direction, and the busbar holder is integrally molded with the busbar. The busbar includes a plurality of convex portions extending in the axial direction, and the convex portions are exposed from the busbar holder.

First claim

What is claimed is:

1. A busbar assembly, comprising a busbar for conducting electricity and a busbar holder for supporting the busbar, wherein
the busbar extends in a circumferential direction, a height of the busbar in an axial direction is greater than a thickness in a radial direction, and the busbar holder is integrally molded with the busbar; and
the busbar comprises a plurality of convex portions extending in the axial direction, and the convex portions are exposed from the busbar holder;
wherein
the busbar assembly comprises a plurality of busbars, the busbars comprise coil connecting portions, the convex portions are located on one axial side of the busbars, and the coil connecting portions are located on the other axial side of the busbars; and
end faces on the one axial side and the other axial side of the busbars have equal height as end faces on axial side and the other axial side of the other busbars in the axial direction respectively.

2. The busbar assembly according to claim 1 , wherein
the busbar assembly comprises a plurality of busbars, the plurality of busbars is arranged in the radial direction, and the convex portions of two adjacent busbars in the radial direction are staggered in the circumferential direction.

3. The busbar assembly according to claim 1 , wherein
the busbar further comprises:
a main portion, extending in a circumferential direction, wherein the coil connecting portion extends toward a radial inner side relative to the main portion; and
a bridging portion, lifted toward the one axial side relative to the main portion and crossing the coil connecting portion, wherein an axial width of the bridging portion is a same as an axial width of the main portion, and the main portion is connected to the bridging portion in the circumferential direction.

4. The busbar assembly according to claim 3 , wherein
a surface of one axial side of the bridging portion is in a same plane as a surface of one axial side of the busbar holder.

5. The busbar assembly according to claim 4 , wherein
the busbar comprises a connecting surface, the connecting surface connects the surface of the one axial side of the bridging portion with the surface of the one axial side of the main portion of the busbar, and a joint of the connecting surface and the surface on the one axial side of the bridging portion is a corner angle.

6. The busbar assembly according to claim 3 , wherein
at least one of two adjacent bridging portions in the radial direction is provided with the convex portion.

7. The busbar assembly according to claim 6 , wherein
each of the two adjacent bridging portions in the radial direction is provided with one convex portion, and two convex portions are located on two sides of the bridging portions in the circumferential direction respectively and are spaced a preset distance apart from end portions disposing on the convex portions.

8. The busbar assembly according to claim 1 , wherein
planar portions are provided on two sides opposite in the circumferential direction of the convex portion.

9. A motor, comprising the busbar assembly according to claim 1 .

10. An electrical product, comprising the motor according to claim 9 .

11. A method for manufacturing a busbar assembly, wherein the busbar assembly comprises a busbar for conducting electricity and a busbar holder for supporting the busbar, and the manufacturing method comprises:
disposing the busbar in an accommodating portion of a mold, and clamping, by using a clamping portion, a convex portion extending in an axial direction of the busbar to fix the busbar, wherein the busbar extends in a circumferential direction in the mold, and a height of the busbar in the axial direction is greater than a thickness in a radial direction; and
flowing resin into the accommodating portion and wrapping the busbar, wherein the busbar holder is formed after the resin is cooled, and the convex portion is exposed from the busbar holder.

Assignees

• Nidec Corp

Inventors

• Wang Yu
• Gao Jun
• Zhang Wenlong

Classifications

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• H02K2203/09

  Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations · CPC title

• H02K3/50 Primary

  Fastening of winding heads, equalising connectors, or connections thereto · CPC title

• H02K3/38

  around winding heads, equalising connectors, or connections thereto · CPC title

• H02K15/10

  Applying solid insulation to windings, stators or rotors, e.g. applying insulating tapes · CPC title