Power supply control circuit, energy harvesting device, and control method of energy harvesting device
First Claim
Patent Images
1. A power supply control circuit comprising:
- a power supply control switch provided between a load and a capacitor which stores power from an energy harvester in which a plurality of power generation cells are coupled in series and supplies stored power to the load and configured to select whether or not to supply the stored power in the capacitor to the load; and
a controller configured to control the power supply control switch based on a first potential extracted from a first coupling node of the plurality of power generation cells and a second potential extracted from a second coupling node different from the first coupling node,wherein the capacitor is coupled between first and second power supply lines, and the power supply control switch and the load are coupled in series between the first and second power supply lines.
1 Assignment
0 Petitions
Accused Products
Abstract
A power supply control circuit includes: a power supply control switch provided between a load and a capacitor which stores power from an energy harvester in which a plurality of power generation cells are coupled in series and supplies stored power to the load and configured to select whether or not to supply the stored power in the capacitor to the load; and a controller configured to control the power supply control switch based on a first potential extracted from a first coupling node of the plurality of power generation cells and a second potential extracted from a second coupling node different from the first coupling node.
16 Citations
15 Claims
-
1. A power supply control circuit comprising:
-
a power supply control switch provided between a load and a capacitor which stores power from an energy harvester in which a plurality of power generation cells are coupled in series and supplies stored power to the load and configured to select whether or not to supply the stored power in the capacitor to the load; and a controller configured to control the power supply control switch based on a first potential extracted from a first coupling node of the plurality of power generation cells and a second potential extracted from a second coupling node different from the first coupling node, wherein the capacitor is coupled between first and second power supply lines, and the power supply control switch and the load are coupled in series between the first and second power supply lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An energy harvesting device comprising:
-
an energy harvester; a capacitor configured to store power from the energy harvester in which a plurality of power generation cells are coupled in series, and supply stored power to a load; and a power supply control circuit including; a power supply control switch provided between the capacitor and the load and configured to select whether or not to supply the stored power in the capacitor to the load; and a controller configured to control the power supply control switch based on a first potential extracted from a first coupling node of the plurality of power generation cells and a second potential extracted from a second coupling node different from the first coupling node, wherein the capacitor is coupled between first and second power supply lines, and the power supply control switch and the load are coupled in series between the first and second power supply lines.
-
-
15. A control method of an energy harvesting device comprising:
-
storing, by a capacitor, power from the energy harvester in which a plurality of power generation cells are coupled in series; selecting, by a power supply control switch provided between a load and the capacitor, whether or not to supply stored power in the capacitor to the load; and
controlling, by a controller, the power supply control switch based on a first potential extracted from a first coupling node of the plurality of power generation cells and a second potential extracted from a second coupling node different from the first coupling node,wherein the capacitor is coupled between first and second power supply lines, and the power supply control switch and the load are coupled in series between the first and second power supply lines.
-
Specification