# US 10,374,496 B2 · Method of mounting attachment parts to an electric machine

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- Number: US 10,374,496 B2
- Document ID: US10374496B2
- Status: Granted
- Kind: B2
- Application number: 15/346,188
- Filed: 2016-11-08
- Published: 2017-05-18
- Granted: 2019-08-06
- Earliest claimed: 2015-11-18
- Assignees: Audi AG
- Applicants: Audi AG
- Inventors: Joerg Schmidt
- Web page: https://patentgrep.com/patent/US10374496B2

## CPC

- H02K 15/50: Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15/38)
- G01R 31/34: Testing dynamo-electric machines
- H02K 15/14: Casings; Enclosures; Supports
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)

## Abstract

In a method of mounting attachment parts to an electric machine, a rotor of the electric machine is non-rotatably supported in a bearing device. A stator of the electric machine is detachably secured in a predefined first installation position by a clamping device, and a first attachment part is mounted to the stator. The clamping device is then released, and the electric machine is operated as motor for a time period sufficient for the stator to rotate in relation to the rotor until reaching a second installation position. The stator is secured by the clamping device in the second installation position, and a second attachment part is mounted to the stator.

## Claims

### Claim 1

A method of mounting attachment parts to an electric machine, said method comprising steps in a following order:
non-rotatably supporting a rotor of the electric machine in a bearing device;
detachably securing a stator arranged in a stator housing of the electric machine in a predefined first installation position by a clamping device, wherein the stator is secured by clamping the stator housing of the stator via the clamping device;
mounting a first attachment part to the stator housing;
releasing the clamping device;
operating the electric machine as a motor while the stator together with the stator housing rotates in relation to the rotor until reaching a second installation position;
securing the stator via the stator housing by the clamping device in the second installation position; and
mounting a second attachment part to the stator housing,
wherein the clamping device comprises laws arranged external to the stator housing.

### Claim 2 (depends on 1)

The method of claim 1, further comprising checking the electric machine for operativeness, while the stator rotates about the rotor from the first installation position to the second installation position during operation of the electric machine.

### Claim 3 (depends on 1)

The method of claim 1, further comprising detecting a position of the stator by position sensors of the electric machine.

### Claim 4 (depends on 1)

The method of claim 1, further comprising detecting a position of the stator by position sensors located outside of the electric machine.

### Claim 5 (depends on 1)

The method of claim 1, further comprising energizing a three-phase winding of the stator to operate the electric machine as the motor.

### Claim 6 (depends on 5)

The method of claim 5, wherein the three-phase winding is adapted to generate a three-phase rotating field.

### Claim 7 (depends on 1)

The method of claim 1, wherein the electric machine is a polyphase machine.

### Claim 8 (depends on 1)

The method of claim 1, wherein the electric machine is a synchronous machine or an asynchronous machine.

### Claim 9

A method of mounting attachment parts to an electric machine, said method comprising steps in a following order:
clamping a stator arranged in a stator housing in a first installation position that allows access from above by externally clamping the stator housing with jaws;
lowering a first attachment part onto the stator housing in the first installation position and mounting the attachment part to the stator housing;
releasing the stator housing from the jaws; moving the stator with the first attachment part in relation to a stationary rotor of the electric machine away from the first installation position to a second installation position which corresponds to the first installation position as occupied by the stator for mounting the first attachment part;
clamping the stator by externally clamping the stator housing with the jaws; and
lowering a second attachment part onto the stator housing in the second installation position and mounting the second attachment part to the stator housing.

### Claim 10 (depends on 9)

The method of claim 9, wherein the stator is moved by operating the electric machine as a motor while the stator together with the stator housing rotates in relation to the rotor until reaching the second installation position.

### Claim 11 (depends on 10)

The method of claim 10, wherein the electric machine is operated as the motor by energizing a three-phase winding of the stator.