The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2015
Filed:
Jul. 16, 2010
Martin Paetzold, Tuebingen, DE;
Julian Roesner, Untergruppenbach, DE;
Martin Paetzold, Tuebingen, DE;
Julian Roesner, Untergruppenbach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to an electric machine (), particularly a generator or a starter generator for a motor vehicle, comprising a converter () which is arranged on a cooling element () and composed of semiconductor switching elements () actuated synchronously with the phase frequency for rectifying a generator alternating voltage or supplying a motor from a DC voltage source (). According to the invention, the cooling element () has a base plate () and cooling fins (), wherein the ratio of the surface wetted by coolant to the volume of the cooling element () ranges from 0.5 to 1.5 [l/mm], preferably from 0.8 to 1.0 [l/mm].