# US 12,003,153 B2 · Method for winding an electric machine rotor

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- Number: US 12,003,153 B2
- Document ID: US12003153B2
- Status: Granted
- Kind: B2
- Application number: 17/791,801
- Filed: 2020-11-30
- Published: 2023-03-09
- Granted: 2024-06-04
- Earliest claimed: 2020-01-10
- Assignees: RENAULT s.a.s.; Nissan Motor Co., Ltd.
- Applicants: Renault S.A.S; Nissan Motor Co., Ltd.
- Inventors: Damien Birolleau; Emmanuel Motte; Daniella Vivas-Marquez
- Web page: https://patentgrep.com/patent/US12003153B2

## CPC

- H02K 19/12: characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing
- H02K 1/26: Rotor cores with slots for windings
- H02K 3/28: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32)
- H02K 3/46: Fastening of windings on the stator or rotor structure
- H02K 13/02: Connections between slip-rings and windings
- H02K 15/095: by laying conductors around salient poles
- H02K 19/26: characterised by the arrangement of exciting windings
- H02K 2213/03: Machines characterised by numerical values, ranges, mathematical expressions or similar information
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

A wound rotor, such as a wound rotor for an electric machine, includes a shaft having a main axis. The shaft includes a manifold. The wound rotor also includes a winding wire and n poles wound and ordered with an ascending order number obtained by rotation about the main axis. The n wound poles can be distributed radially about the main axis. The n poles are wound with the wire in series in turn according to their ascending order numbers, the last pole, however, not being wound last.

## Claims

### Claim 1

A wound rotor, comprising:
a shaft with main axis, the shaft comprising a slipring;
a winding wire; and
n wound poles ordered in ascending numerical order obtained by rotation about the main axis,
wherein the n wound poles are wound with the wire in series turn by turn according to their ascending numerical order, although a last pole of the n would poles is not the last to be wound.

### Claim 2 (depends on 1)

The wound rotor as claimed in claim 1, wherein the n wound poles are distributed radially about the main axis.

### Claim 3 (depends on 1)

The wound rotor as claimed in claim 1, wherein a penultimate pole of the n wound poles is wound after the last pole.

### Claim 4 (depends on 1)

The wound rotor as claimed in claim 1, wherein an antepenultimate pole of the n wound poles is wound after the last pole.

### Claim 5 (depends on 1)

The wound rotor as claimed in claim 1, wherein upstream of a first pole of the n wound poles, the wire rests against the shaft at a first non-zero angle about the main axis.

### Claim 6 (depends on 1)

The wound rotor as claimed in claim 1, wherein downstream of the last pole to be wound, the wire rests against the shaft at a second non-zero angle about the main axis.

### Claim 7 (depends on 1)

The wound rotor as claimed in claim 1, further comprising:
pins configured to facilitate the winding of the wire.

### Claim 8 (depends on 7)

The wound rotor as claimed in claim 7, wherein the pins run parallel or substantially parallel to the main axis.

### Claim 9 (depends on 1)

The wound rotor as claimed in claim 1, further comprising:
pins configured to facilitate the winding of the wire between two adjacent poles and/or between each pole and the shaft and/or the slipring.

### Claim 10 (depends on 9)

The wound rotor as claimed in claim 9, wherein the pins run parallel or substantially parallel to the main axis.

### Claim 11 (depends on 10)

An electric machine, comprising:
the wound rotor as claimed in claim 10.

### Claim 12 (depends on 11)

A vehicle, comprising:
the electric machine as claimed in claim 11.

### Claim 13 (depends on 12)

The vehicle as claimed in claim 12, wherein the vehicle is a motor vehicle.

### Claim 14 (depends on 10)

A vehicle, comprising:
the wound rotor as claimed in claim 10.

### Claim 15 (depends on 14)

The vehicle as claimed in claim 14, wherein the vehicle is a motor vehicle.

### Claim 16 (depends on 1)

A method for obtaining the wound rotor as claimed in claim 1, comprising:
winding the n poles with the wire in series turn by turn in their ascending numerical order, although the last pole is not the last to be wound.