Volkswagen Ag

Alex Wist

Martin Fuchs

Mike Fippl

Nils Wilhelm

David Müller

Johannes Daniel Knöppel

Nadine Horn

Dirk Bartholmai

Martin GÖBEL

In a method for manufacturing an electric motor comprising a rotor and a stator a placeholder for a temperature sensor is inserted in the axial direction between a first coil layer and an adjacent second coil layer of a winding head such that the placeholder is situated in a gap-shaped recess extending between the first and the second coil layers, the first coil layer is then pressed onto a circumferential surface of the placeholder and onto the second coil layer and is plastically deformed such that a space between the lateral surfaces of the two coil layers and the circumferential surface of the placeholder is reduced, and a contact surface between the lateral surface of the first coil layer and the circumferential surface of the placeholder is enlarged. By removing the placeholder, a receiving chamber is subsequently formed in the winding head, into which a temperature sensor is then inserted.

Method for producing an electric motor and electric motor

An electric motor, particularly an engine of a motor vehicle, has a temperature sensor for monitoring the operating temperatures of a winding. The temperature sensor is inserted through a radial through-hole at the periphery of the insulation element into a recess which is delimited between a shaped-out portion on the corresponding projection of the insulation element and the winding. The shaped-out portion has a slope so that a translational displacement of the temperature sensor at the same time leads to an increase in the biasing force of the temperature sensor with respect to the winding. It is thus possible to ensure the desired pre-tension force, and therefore a reliable contact surface between the temperature sensor and the winding, as a result of the connecting force and, at the same time, secure the temperature sensor with force fit in the shaped-out portion.

Electric motor and method of manufacturing the electric motor

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Baunatal, Germany

Alex Wist