# US 12,113,415 B2 · Rotating electric machine and conductor

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,113,415 B2
- Document ID: US12113415B2
- Status: Granted
- Kind: B2
- Application number: 17/741,566
- Filed: 2022-05-11
- Published: 2022-08-25
- Granted: 2024-10-08
- Earliest claimed: 2019-11-11
- Assignees: Denso Corporation
- Applicants: Denso Corporation
- Inventors: Yuki Takahashi
- Web page: https://patentgrep.com/patent/US12113415B2

## CPC

- H02K 3/34: between conductors or between conductor and core, e.g. slot insulation
- H02K 3/28: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32)
- H02K 3/30: Windings characterised by the insulating material
- H02K 3/42: Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
- H02K 3/47: Air-gap windings, i.e. iron-free windings
- H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)}
- H02K 11/0094: {Structural association with other electrical or electronic devices}
- H02K 11/33: Drive circuits, e.g. power electronics (H02K11/38 takes precedence)
- H02K 15/105: {to the windings}
- H02K 15/12: Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
- H02K 2203/09: Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

A rotating electric machine includes an armature that has an armature winding of multiple phases. The armature winding is configured by a conductor being wound. The conductor is configured by a plurality of wires being covered by an insulation coating in a state in which the plurality of wires are bundled. Each of the plurality of wires includes a conductor body configured to permit flow of a current, and a fusion layer that covers a surface of the conductor body. The fusion layer is configured to be thinner than the insulation coating. In the state in which the plurality of wires are bundled, fusion layers of the plurality of wires are fused and in contact with one another.

## Claims

### Claim 1

A rotating electric machine comprising:
an armature that has an armature winding of multiple phases, wherein:
the armature winding is configured by a conductor being wound;
the conductor is configured by a plurality of wires covered by an insulation coating in a state in which the plurality of wires are bundled;
each of the plurality of wires includes
a conductor body configured to permit flow of a current, and
a fusion layer that covers a surface of the conductor body,
a bonding strength between the fusion layer and the insulation coating being weaker than a bonding strength between the conductor body and the fusion layer, and
a coefficient of linear expansion of the fusion layer being between a coefficient of linear expansion of the conductor body and a coefficient of linear expansion of the insulation coating; and
the fusion layer of each of the plurality of wires is thinner than the insulation coating, and in the state in which the plurality of wires are bundled, fusion layers of the plurality of wires are fused and in contact with one another.

### Claim 2 (depends on 1)

The rotating electric machine according to claim 1, wherein:
the insulation coating is formed into a tape-like shape and is wound in a spiraling manner around an outer circumference of the plurality of wires that are bundled.

### Claim 3

A conductor that configures an armature winding of a rotating electric machine, wherein:
the conductor is configured by a plurality of wires covered by an insulation coating in a state in which the plurality of wires are bundled;
each of the plurality of wires includes
a conductor body configured to permit flow of a current, and
a fusion layer that covers a surface of the conductor body,
a bonding strength between the fusion layer and the insulation coating being weaker than a bonding strength between the conductor body and the fusion layer, and
a coefficient of linear expansion of the fusion layer being between a coefficient of linear expansion of the conductor body and a coefficient of linear expansion of the insulation coating;
the fusion layer of each of the plurality of wires is thinner than the insulation coating; and
in the state in which the plurality of wires are bundled, fusion layers of the plurality of wires are fused and in contact with one another.