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Patent Searching and Data


Title:
ELECTRIC MOTOR HAVING A TEMPERATURE DETECTION DEVICE AND METHOD FOR DETECTING A TEMPERATURE IN AN ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2009/115148
Kind Code:
A8
Abstract:
The invention relates to an electric motor (2) having a coil element comprising a winding, which during the electric actuation thereof by means of interaction of a magnetic field caused by said actuation with another magnetic field brings about a driving force; wherein the winding of the coil element is disposed on an element of the electric motor (2) such that a complex resistance of the winding is temperature-dependent. The invention further relates to a motor system and to a method for determining a temperature in an electric motor (2), comprising the following steps: - applying an oscillation signal to the electric motor (2); - determining a resulting signal that depends on the amount of the complex resistance of the currently actuated winding in the electric motor and the oscillation signal; - allocating the temperature in the electric motor as a function of an electric parameter of the resulting signal.

Inventors:
SCHOSER, Siegmar (Gerlinger Weg 5/2, Ditzingen, 71254, DE)
Application Number:
EP2008/066327
Publication Date:
October 28, 2010
Filing Date:
November 27, 2008
Export Citation:
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Assignee:
ROBERT BOSCH GMBH (Postfach 30 02 20, Stuttgart, 70442, DE)
SCHOSER, Siegmar (Gerlinger Weg 5/2, Ditzingen, 71254, DE)
International Classes:
H02K11/00
Attorney, Agent or Firm:
ROBERT BOSCH GMBH (Postfach 30 02 20, Stuttgart, 70442, DE)
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