公开(公告)号：US20250055315A1

公开(公告)日：2025-02-13

申请号：US18721541

申请日：2022-12-20

Applicant: Lightricity Limited

Inventor： Julien Pierre Raymond Campos ,  Mathieu Bellanger ,  Nathan James Smith ,  Matthias Kauer

IPC: H02J50/00 ,  H02J7/35

Abstract: An electronic device comprises a photovoltaic unit, an energy storage unit, a voltage detector, a load switch and an application load. The device is configured to harvest and store energy from ambient illumination, and to optimise power delivery to the application load from at least one of the harvested energy and the stored energy. The photovoltaic unit, the energy storage unit, the voltage detector and an input of the load switch are connected to a common point. The photovoltaic unit harvests energy from the ambient illumination. An output of the load switch is coupled to the application load. The voltage detector measures a voltage at the common point and turns on the load switch when the measured voltage has increased to a level that is greater than or equal to a first voltage, in order to provide optimised power delivery to the application load from at least one of the energy storage unit and photovoltaic unit. The voltage detector turns off the load switch when the measured voltage has decreased to a level that is not greater than a second voltage, in order that the photovoltaic unit stores energy in the energy storage unit, wherein the first voltage is greater than the second voltage.