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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.:

US 12617538 B1

PDFFull Text
Date of Patent:
May. 05, 2026

Filed:

May. 23, 2024

Electrical system

Applicant:

Rolls-royce Plc, London, GB;

Inventors:

Chandana J Gajanayake, Singapore, SG;

Devinda A Molligoda, Nugegoda, LK;

Assignee:

ROLLS-ROYCE PLC, London, GB;

Attorney:

Oliff PLC

Primary Examiner:

Daniel Cavallari

Assistant Examiner:

Aqeel H Bukhari

Int. Cl.
CPC ...
B64D 27/35 (2024.01); H01M 8/04537 (2016.01); H01M 8/04858 (2016.01); H01M 10/42 (2006.01); H01M 16/00 (2006.01); H02J 1/08 (2026.01); H02J 7/00 (2026.01); H02J 7/34 (2006.01);
U.S. Cl.
CPC ...
B64D 27/35 (2024.01); H01M 8/04559 (2013.01); H01M 8/04589 (2013.01); H01M 8/04619 (2013.01); H01M 8/04865 (2013.01); H01M 10/425 (2013.01); H01M 16/006 (2013.01); H02J 1/084 (2020.01); H02J 7/0047 (2013.01); H02J 7/0068 (2013.01); H02J 7/00712 (2020.01); H02J 7/34 (2013.01); H01M 2220/20 (2013.01); H01M 2250/20 (2013.01);
Abstract

An electrical system includes: a battery; a fuel-cell pack; a load electrically coupled to the fuel-cell pack; a switching arrangement electrically coupled to the battery, the fuel-cell pack and the load; a DC-DC converter; and a control system. The switching arrangement configures the electrical system in at least one of a battery-charge mode and a combined-drive mode. In the battery-charge mode the battery is coupled in series to the fuel-cell pack and the load via the DC-DC converter for simultaneous charging of the battery and driving of the load by the fuel-cell pack. In the combined-drive mode, the battery is coupled in series to the fuel-cell pack and the load via the DC-DC converter for driving of the load by both the battery and the fuel-cell pack. The control system is configured to: monitor a parameter of an electrical power provided to the load; and control the DC-DC converter.

Find Patent Forward Citations

Gajanayake, Chandana. (2026). Electrical system (U.S. Patent No. 12617538). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12617538

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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