Busbar, motor, and power transmission system using same

• US 10,547,228 B2
• Filed: 11/04/2016
• Issued: 01/28/2020
• Est. Priority Date: 11/05/2015
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kong, Bong Bae
• Primary Examiner(s): Truong, Thomas
• Application Number:
  US15/774,185
• Publication Number:
  US 20180316238A1
• Time in Patent Office: 1,180 Days
• Field of Search: 310 71, 310260, 310270
• CPC Class Codes: B62D 5/0403 characterised by constructional features, e.g. common housing for motor and gear box
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 2213/03 Machines characterised by numerical values, ranges, mathematical expressions or similar information
• CPC Class Codes: H02K 3/28 Layout of windings or of connections between windings windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132

Abstract

Disclosed in one embodiment is a busbar comprising: an insulating body; a plurality of neutral terminals arranged in the insulating body; and a plurality of first driving terminals, second driving terminals, and third driving terminals arranged in the insulating body, wherein the plurality of neutral terminals, first driving terminals, second driving terminals, and third driving terminals are electrically insulated, respectively, and the shape of the plurality of the first driving terminals, the second driving terminals, and the third driving terminals are the same.

Claims

1. A busbar comprising:

an insulating body;

a plurality of neutral terminals disposed on the insulating body; and

a plurality of first driving terminals, a plurality of second driving terminals, and a plurality of third driving terminals disposed on the insulating body,

wherein the neutral terminals, first driving terminals, second driving terminals, and third driving terminals are electrically insulated from each other, and

wherein the first driving terminals, second driving terminals, and third driving terminals have the same shape,

wherein a diameter of a first virtual circle connected to first ends of each of the first driving terminals, the second driving terminals, and the third driving terminals is smaller than a diameter of a second virtual circle connected to second ends of each of the first driving terminals, the second driving terminals, and the third driving terminals,

wherein centers of the first virtual circle and the second virtual circle are identical,

wherein each of the first driving terminals, the second driving terminals, and the third driving terminals comprises;

a body portion comprising the first end and the second end;

a first connection portion connected to the first end of the body portion; and

a second connection portion connected to the second end of the body portion,

wherein the first connection portion and the second connection portion protrude toward an outside of the second virtual circle.

2. The busbar of claim 1, wherein the insulating body includes insertion grooves in which the first driving terminals, second driving terminals, and third driving terminals are disposed.

3. The busbar of claim 1, wherein each of the plurality of neutral terminals has the same shape.

4. The busbar of claim 1, wherein the first driving terminals, second driving terminals, and third driving terminals are coplanar.

5. The busbar of claim 1, wherein a radius of a curvature at a first end of each of the first driving terminals, second driving terminals, and third driving terminals is different from that of a curvature at a second end thereof.

6. The busbar of claim 5, wherein the curvature of each of the first driving terminals, second driving terminals, and third driving terminals is changed from the first end of each of the first driving terminals, second driving terminals, and third driving terminals toward the second end thereof.

7. The busbar of claim 1, wherein each of the first driving terminals, second driving terminals, and third driving terminals includes

a terminal portion protruding from the body portion in a direction of a shaft.

8. The busbar of claim 7, further comprising extension portions disposed between the connection portion and the body portion,

wherein

the extension portions extend in a direction perpendicular to the direction of the shaft;

and

wherein a length of the extension portions connected to the first connection portion is longer than a length of the extension portions connected to the second connection portion.

9. The busbar of claim 1, wherein:

the insulating body includes a first hole formed at a center of the insulating body,

wherein

a diameter of the first hole is less than that of the first virtual circle, and

wherein centers of the first hole, the first virtual circle, and the second virtual circle are identical.

10. A motor comprising:

a stator including a first coil set and a second coil set; and

a busbar including a first terminal set electrically connected to the first coil set to constitute a first circuit, a second terminal set electrically connected to the second coil set to constitute a second circuit, and an insulating body configured to fix the first and second terminal sets,

wherein each of the first terminal set and the second terminal set includes at least one first driving terminal, at least one second driving terminal, and least one third driving terminal, and

wherein the first driving terminal, the second driving terminal, and the third driving terminal have the same shape,

wherein a diameter of a first virtual circle connected to first ends of each of the first driving terminals, the second driving terminals, and the third driving terminals is smaller than a diameter of a second virtual circle connected to second ends of each of the first driving terminals, the second driving terminals, and the third driving terminals,

wherein centers of the first virtual circle and the second virtual circle are identical,

wherein each of the first driving terminals, the second driving terminals, and the third driving terminals comprises;

a body portion comprising the first end and the second end;

a first connection portion connected to the first end of the body portion; and

a second connection portion connected to the second end of the body portion,

wherein the first connection portion and the second connection portion protrude toward an outside of the second virtual circle.

11. The motor of claim 10, wherein a curvature of each of the first driving terminals, the second driving terminals, and the third driving terminals is changed from a first end of each of the first driving terminals, the second driving terminals, and the third driving terminals toward a second end thereof.

12. A power transmission system comprising:

a motor including a first circuit and a second circuit;

a first driving unit electrically connected to the first circuit;

a second driving unit electrically connected to the second circuit; and

a control unit configured to control the first driving unit and the second driving unit,

wherein the first circuit includes a first coil set and a first terminal set configured to electrically connect the first coil set, and the second circuit includes a second coil set and a second terminal set configured to electrically connect the second coil set,

wherein the first terminal set and the second terminal set comprise a plurality of first driving terminals, a plurality of second driving terminals, and a plurality of third driving terminals,

wherein the first driving terminals, second driving terminals, and third driving terminals have the same shape,

wherein a diameter of a first virtual circle connected to first ends of each of the first driving terminals, the second driving terminals, and the third driving terminals is smaller than a diameter of a second virtual circle connected to second ends of each of the first driving terminals, the second driving terminals, and the third driving terminals,

wherein centers of the first virtual circle and the second virtual circle are identical,

wherein each of the first driving terminals, the second driving terminals, and the third driving terminals comprises;

a body portion comprising the first end and the second end;

a first connection portion connected to the first end of the body portion; and

a second connection portion connected to the second end of the body portion,

wherein the first connection portion and the second connection portion protrude toward an outside of the second virtual circle.