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:
Oct. 12, 2021
Filed:
Jun. 22, 2018
Signify Holding B.v., Eindhoven, NL;
Vasu Poojary, Eindhoven, NL;
Lei Han, Eindhoven, NL;
Yuhong Fang, Eindhoven, NL;
Mark Ciolek, Eindhoven, NL;
Venkata Sriram Pullela, Eindhoven, NL;
Mahadev Cholachagudda, Eindhoven, NL;
Vikram Shivanna, Eindhoven, NL;
Anil Shivram Raiker, Eindhoven, NL;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
A power supply system for a lighting unit, comprises a driver, a local energy storage device and a converter. The converter implements a first, charging mode, mode by connecting to the output of said driver for diverting at least a part of the driving current from the lighting unit to charge the energy storage device, a second, battery driving, mode by connecting to the lighting unit for converting the local energy storage device power supply to drive the lighting unit, and a third, grid driving, mode to neither charge the energy storage device nor convert the secondary power supply. The converter and the driver are controlled actively and synchronously to maintain the current through the lighting unit when switching the converter between modes.