Electric motor

Abstract

The present invention relates to an electric motor (1) comprising a coil winding (16), and a temperature sensor (4), wherein the temperature sensor (4) is pressed onto an electrical conductor (2) of the coil winding (16) by means of a clamping force of a holding element (5), and wherein the holding element (5) is held between the temperature sensor (4) and a mating element (3, 6) due to said clamping force.

Description

technical field [0001] The invention relates to an electric motor. The invention relates in particular to the placement of temperature sensors on electric motors. Background technique [0002] It is known from the prior art to detect the temperature at the electric motor by means of a temperature sensor. Here, NTC (Negative Temperature Coefficient) is mostly used. The temperature information can be transmitted to the controller of the electric motor, which uses this information for the purpose of steering the electric motor. [0003] Temperature sensors are usually placed on the coil windings of electric motors. The coil winding comprises a plurality of electrical conductors which are wound around the sheet pack, wherein the temperature sensor is preferably arranged on one of the electrical conductors. A sheet pack is here a stack of a plurality of sheet metal elements, wherein the stack represents the stator base body and / or the rotor base body. An electrical conductor...

AI Technical Summary

Problems solved by technology

[0007] However, the arrangement as shown in FIG. 1 has some disadvantages: temperatures of up to approximately 200° C. can thus occur during operation of the electric motor 1 , while the electric motor 1 cools down to ambient temperature during the standstill phase

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