Electric machine

Patent metadata

Field	Value
Publication number	US-12095328-B2
Application number	US-202017630703-A
Country	US
Kind code	B2
Filing date	Jul 7, 2020
Priority date	Aug 6, 2019
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

An electric machine is disclosed that includes a stator with a winding having a plurality of conductors associated with one or more phases and interconnected with one another. The ends of at least part of the conductors protrudes from the winding, wherein one part of said ends is connected to an interconnecting ring placed axially on the winding and a further part of said ends is connected to a current connection arranged radially outside the winding via connecting conductors. The connecting conductors are fixed to at least one holding element provided on the interconnecting ring.

First claim

The invention claimed is:

1. An electric machine, comprising a stator having a winding comprising a plurality of conductors associated with one or more phases and interconnected with one another, wherein ends of at least part of the conductors protrude from the winding, wherein one part of said ends is connected to an interconnecting ring placed axially on the winding and a further part of said ends is connected to a current connection arranged radially outside the winding via connecting conductors, wherein the connecting conductors are fixed to at least one holding element provided on the interconnecting ring-ring, wherein the at least one holding element is designed as a latching or clamping element, on which one or more of the connecting conductors are fixed via a latching or clamping connection.

2. The electric machine according to claim 1 , wherein the at least one holding element includes a plurality of holding elements that are provided on the interconnecting ring at a distance from one another.

3. The electric machine according to claim 1 , wherein the interconnecting ring has a housing in which the at least one holding element is arranged.

4. The electric machine according to claim 3 , wherein the at least one holding element is formed as one piece on the housing, which is made of plastic.

5. The electric machine according to claim 1 , wherein the latching or clamping element has one or more axially or radially open U-shaped recesses for latching or clamping fixation.

6. The electric machine according to claim 5 , wherein the latching or clamping element is designed as an axially open U-shaped recess, wherein one leg is flexible and the one or more of the connecting conductors are clamped in the U-shaped recess.

7. The electric machine according to claim 6 , wherein the flexible leg has one or more slots which form separate flexible leg sections.

8. The electric machine according to claim 6 , wherein at least one latching projection is provided on the flexible leg, on or behind which the one or more of the connecting conductors latch.

9. The electric machine according to claim 5 , wherein each holding element has one or more radially open latching or clamping recesses, in each of which the at least one of the connecting conductors engage, wherein in the case of a latching recess, the latching recesses have at least one latching projection, on or behind which the respective connecting conductor latches.

10. An electric machine, comprising:
a stator having a winding comprising a plurality of conductors associated with one or more phases and interconnected with one another, wherein the conductors include ends that protrude from the winding;
a current connection arranged radially outside the winding via connecting conductors, wherein a first part of the ends of the conductors is connected to the current connection; and
an interconnecting ring placed axially on the winding and including a holding element, wherein a second part of the ends of the conductors is connected to the interconnecting ring, the holding element comprising an inner leg, an outer flexible leg, and an axially open U-shaped recess formed between the inner leg and the outer flexible leg, wherein one or more of the connecting conductors are clamped in the U-shaped recess.

11. The electric machine according to claim 10 , wherein the outer flexible leg includes two or more flexible leg sections separated by one or more slots.

12. The electric machine according to claim 11 , wherein the outer flexible leg includes a first leg section, a second leg section, and a third leg section, wherein a first slot is defined between the first and the second leg sections and a second slot is defined between the second and the third leg sections.

13. The electric machine according to claim 10 , wherein at least one latching projection is provided on the outer flexible leg, wherein on or behind which the one or more of the connecting conductors is secured within the U-shaped recess by the latching projection.

14. The electric machine according to claim 10 , wherein the holding element is formed integrally with a housing of the interconnecting ring.

Assignees

• Schaeffler Technologies Ag

Inventors

• Ruppert Andreas

Classifications

• H02K2203/09

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

• H02K15/0421

  and consisting of single conductors, e.g. hairpins · CPC title

• H02K5/225

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

• H02K2203/06

  Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations · CPC title

• H02K3/28

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title