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:
Nov. 04, 2025
Filed:
Mar. 06, 2023
Robert Bosch Gmbh, Stuttgart, DE;
Helerson Kemmer, Vaihingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for operating a multi-stage air compression system () comprising an electrically driven first compressor () and a second compressor () driven by a turbine (), wherein the compressors () are arranged in a supply air path () and the turbine () is arranged in an exhaust air path () of an air system for supplying air to a fuel cell stack (). According to the invention, when the air compression system () is started, the air compressed by means of the first compressor () is supplied to the fuel cell stack () via a bypass () to bypass the second compressor () and the second compressor () is connected to the surrounding environment on both the inlet and outlet sides via at least one valve () and/or a throttle valve (). The invention further relates to a multi-stage air compression system () as well as a fuel cell system having a multi-stage air compression system ().