Electric machine

Patent metadata

Field	Value
Publication number	US-12155274-B2
Application number	US-202017606139-A
Country	US
Kind code	B2
Filing date	Mar 30, 2020
Priority date	Apr 26, 2019
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

An electric machine includes a stator having a winding including a plurality of conductors assigned to one or more phases and at least one temperature sensor assembly having a temperature sensor section with a temperature sensor for detecting the temperature of the winding. The ends of at least one part of the conductors on the inner or outer circumference of the winding protrude axially or radially over the winding, wherein an interconnection ring comprising at least one conductor bridge is placed axially or radially on the winding. The ends of at least two respective conductors assigned to a phase protrude radially or axially outwards. The temperature sensor section has a sensor housing which is introduced into a housing recess provided on the interconnection ring in such a way that the temperature sensor is in thermal contact with the connection conductor or the conductor bridge.

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 connected to one another, as well as at least one temperature sensor assembly having a temperature sensor section with a temperature sensor for detecting a temperature in a region of the winding, wherein ends of at least one part of the plurality of conductors on an inner circumference or on an outer circumference of the winding protrude axially or radially over the winding, wherein an interconnection ring comprising at least one conductor bridge is placed axially or radially on the winding, to which at least one part of the plurality of conductors are connected, wherein the ends of at least two respective conductors of the plurality of conductors assigned to a phase protrude radially or axially outwards, to which at least one connection conductor is connected, which is also connected to a power connection arranged radially outside the winding, and wherein the temperature sensor section has a sensor housing which is introduced into a housing recess provided on the interconnection ring in such a way that the temperature sensor is in thermal contact with the connection conductor or the conductor bridge, wherein the housing recess is provided radially adjacent to a retainer configured to fix the at least one connection conductor.

2. The electric machine according to claim 1 , wherein the sensor housing is fixed in the housing recess via a latching or clamping connection.

3. The electric machine according to claim 2 , wherein two spring arms are provided on the sensor housing, which jam into the housing recess or which latch with latching elements provided thereon into latching recesses provided on the housing recess.

4. The electric machine according to claim 1 , wherein the temperature sensor section protrudes from the sensor housing with an end having the temperature sensor.

5. The electric machine according to claim 1 , wherein a spring element is provided on the sensor housing, by which it is spring-loaded in a direction of the connection conductor or the conductor bridge.

6. The electric machine according to claim 1 , wherein the sensor housing is comprised of a plastic potting compound in which the temperature sensor section is embedded.

7. The electric machine according to claim 1 , wherein the interconnection ring has a housing on which the housing recess is formed.

8. The electric machine according to claim 7 , wherein the housing is comprised of a potting compound, wherein the conductor bridge together with the temperature sensor section is embedded in the potting compound.

9. The electric machine according to claim 1 , wherein the housing recess is formed in extension of one end of the conductor bridge.

10. The electric machine according to claim 5 , wherein the sensor housing is comprised of a plastic potting compound in which the temperature sensor section is embedded, and wherein the spring element is embedded in the potting compound in the sensor housing.

11. An electric machine comprising a stator having a winding comprising a plurality of conductors assigned to one or more phases, which are connected to one another, as well as at least one temperature sensor assembly having a temperature sensor section with a temperature sensor for detecting a temperature in a region of the winding, wherein ends of at least one part of the plurality of conductors on an inner circumference or on an outer circumference of the winding protrude axially or radially over the winding, wherein an interconnection ring comprising at least one conductor bridge is placed axially or radially on the winding, to which at least one part of the plurality of conductors are connected, wherein the ends of at least two respective conductors of the plurality of conductors assigned to a phase protrude radially or axially outwards, to which at least one connection conductor is connected, which is also connected to a power connection arranged radially outside the winding, and wherein the temperature sensor section has a sensor housing which is introduced into a housing recess provided on the interconnection ring in such a way that the temperature sensor is in thermal contact with the connection conductor or the conductor bridge, wherein the housing recess is located radially inwardly from the connection conductor and aligned radially therewith.

Assignees

• Schaeffler Technologies Ag

Inventors

• Silvery Christian
• Czerlewitz Mike
• Kästle Matthias
• Ruppert Andreas

Classifications

• H02K2203/09

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

• H02K11/25 Primary

  Devices for sensing temperature, or actuated thereby · CPC title