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:
Dec. 05, 2023
Filed:
Apr. 26, 2022
Rolls-royce Deutschland Ltd & CO KG, Blankenfelde-Mahlow, DE;
Philipp Schildt, Strullendorf, DE;
Markus Sons, Nuremberg, DE;
Rolls-Royce Deutschland Ltd & Co KG, Blankenfelde-Mahlow, DE;
Abstract
An electric drive system includes at least one electric drive unit. The at least one electric drive unit includes an electric motor and inverters that are each supplied with DC voltage via a high-voltage bus. The electric drive system includes a main battery system that has a plurality of battery modules that supply DC voltage to each of the high-voltage buses. The electric device system includes a plurality of reserve batteries. A separate reserve battery is provided for each high-voltage bus. The drive system is configured to make a change to the supply of DC voltage when a corresponding control signal is present for each of the high-voltage buses. A change is made from a supply of DC voltage of the battery module of the main battery system that is assigned to the high-voltage bus to a supply of DC voltage of the reserve battery assigned to the high-voltage bus.