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. 28, 2020
Filed:
Jul. 31, 2017
Robert Bosch Gmbh, Stuttgart, DE;
Klaus Beulich, Weil der Stadt, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a drive system, in particular for a vehicle, comprising a fuel cell unit for generating electric energy, a secondary battery for storing electric energy, an electric machine with windings, and an inverter for actuating the electric machine. The inverter is designed as a 3-level inverter and has multiple electronic switches, diodes, a plus pole, a minus pole, and a neutral pole. The fuel cell unit and the secondary battery are connected in series and are connected to the poles of the inverter. The invention also relates to a method for heating a drive system according to the invention, wherein the switches of the inverter are actuated such that a short-circuit current path is produced between the poles of the inverter to which the fuel cell unit is connected.