Electric machine

Patent metadata

Field	Value
Publication number	US-12316183-B2
Application number	US-202017633241-A
Country	US
Kind code	B2
Filing date	Jul 2, 2020
Priority date	Aug 6, 2019
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

An electric machine including a stator (2) with a winding (3) having a plurality of conductors (4) associated with one or more phases and interconnected with each other, the ends (6) of at least two conductors (4) are associated with a phase projecting axially or radially from the winding (3) at the inner circumference and/or the outer circumference of the winding (3) and a connected to a power connection (9) that is mounted radially outside the winding (3) by a common connecting conductor (12a).

First claim

The invention claimed is:

1. An electric machine, comprising:
a stator having a winding comprising a plurality of conductors assigned to one or more phases, which are interconnected with each other; and
ends of at least two of the conductors associated with one of the phases project axially or radially from the winding at at least one of an inner circumference or an outer circumference of the winding, and are connected to a power connection arranged radially outside the winding by a common connecting conductor;
wherein a plurality of contact elements corresponding to a number of phases are provided on the power connection, said contact elements have a base and at least two fingers protruding therefrom and aligned with the base, the connecting conductor has a contact section with which the connecting conductor contacts on two opposite sides at both of the conductor ends, and the contact section includes two U-shaped receptacles which each encompass one of the conductor ends.

2. The electric machine according to claim 1 , wherein the contact section is wider than an actual conductor width.

3. The electric machine according to claim 1 , wherein the conductor ends of at least some of the conductors project beyond the winding, some of the conductor ends are connected axially to an interconnection ring set on the winding, and the connecting conductors are fixed to at least one holding element provided on the interconnection ring.

4. The electric machine according to claim 3 , wherein the interconnection ring has a housing in which the one or more holding elements are arranged or formed integrally therewith.

5. The electric machine according to claim 4 , wherein at least one of the holding elements is configured as a latching or clamping element, on which one or more of the connecting conductors are fixed via a latching or clamping connection.

6. An electric machine, comprising:
a stator having a winding comprising a plurality of conductors assigned to one or more phases, which are interconnected with each other; and
ends of at least two of the conductors associated with one of the phases project from the winding at at least one of an inner circumference or an outer circumference of the winding, and are connected to a power connection arranged outside the winding by a common connecting conductor;
wherein the conductor ends of at least some of the conductors project beyond the winding, some of the conductor ends are connected axially to an interconnection ring set on the winding, and the connecting conductors are fixed to at least one holding element provided on the interconnection ring, and
wherein the at least one holding element is positioned radially outside the winding, and the at least one holding element includes two latching or clamping arms configured to directly clamp onto the connecting conductors.

7. The electric machine according to claim 6 , wherein the connecting conductor has a contact section with which the connecting conductor contacts on two opposite sides at both of the conductor ends.

8. The electric machine according to claim 7 , wherein the connecting conductor has a contact section which is U-shaped for contact on both of the opposite sides of the conductor ends.

9. The electric machine according to claim 7 , wherein the contact section has a U-shaped receptacle which encompasses both of the conductor ends.

10. The electric machine according to claim 7 , wherein the contact section has two U-shaped receptacles which each encompass one of the conductor ends.

11. The electric machine according to claim 6 , wherein a plurality of contact elements corresponding to a number of phases are provided on the power connection, said contact elements have a base and at least two fingers protruding therefrom.

12. The electric machine according to claim 6 , wherein the interconnection ring has a housing in which the one or more holding elements are arranged or formed integrally therewith.

Assignees

• Schaeffler Technologies Ag

Inventors

• Ruppert Andreas
• Babian Robin

Classifications

• H02K2203/09

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

• H02K5/225

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

• H02K3/50 Primary

  Fastening of winding heads, equalising connectors, or connections thereto · CPC title