ELECTRICITY STORAGE DEVICE FOR SOLAR ENERGY HARVESTING DEVICE
First Claim
1. An electricity storage device for a solar energy harvesting device:
- at least a first electricity storage unit, receiving and storing electricity from the solar energy harvesting device;
at least a second electricity storage unit, for coupling to an exterior power supply system, wherein the exterior power supply system charges/discharges the second electricity storage unit in a predetermined voltage;
a battery monitoring unit, coupled to the first electricity storage unit, sensing an output voltage of the first electricity storage unit, and generating a control signal according to the output voltage of the first electricity storage unit; and
a power converter, having an input terminal and an output terminal, wherein the input terminal is coupled to the first electricity storage unit, the output terminal is coupled to the second electricity storage unit, the power converter is controlled by the control signal for converting the electricity of the first electricity storage unit to the second electricity storage unit;
wherein the battery monitoring unit enables the power converter through the control signal when the output voltage of the first electricity storage unit is larger than a start voltage, for controlling the power converter to convert the electricity of the first electricity storage unit to the second electricity storage unit;
wherein the battery monitoring unit disables the power converter through the control signal when the output voltage of the first electricity storage unit is less than a stop voltage, wherein the start voltage is larger than the stop voltage.
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Accused Products
Abstract
An electricity storage device for a solar energy harvesting device comprising at least a first electricity storage unit, at least a second electricity storage unit, a battery monitoring unit and a power converter. The second electricity storage unit is for coupled to an exterior power supply system which charges/discharges the second electricity storage unit in a predetermined voltage. The battery monitoring unit controls the power converter according to the output voltage of the first electricity storage unit for converting the electricity of the first electricity storage unit to the second electricity unit. When the output voltage of the first electricity storage unit is larger than a start voltage, the electricity of the first electricity storage unit is converted to the second electricity storage unit. When the output voltage of the first electricity storage unit is less than a stop voltage, the battery monitoring unit disables the power converter.
32 Citations
10 Claims
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1. An electricity storage device for a solar energy harvesting device:
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at least a first electricity storage unit, receiving and storing electricity from the solar energy harvesting device; at least a second electricity storage unit, for coupling to an exterior power supply system, wherein the exterior power supply system charges/discharges the second electricity storage unit in a predetermined voltage; a battery monitoring unit, coupled to the first electricity storage unit, sensing an output voltage of the first electricity storage unit, and generating a control signal according to the output voltage of the first electricity storage unit; and a power converter, having an input terminal and an output terminal, wherein the input terminal is coupled to the first electricity storage unit, the output terminal is coupled to the second electricity storage unit, the power converter is controlled by the control signal for converting the electricity of the first electricity storage unit to the second electricity storage unit; wherein the battery monitoring unit enables the power converter through the control signal when the output voltage of the first electricity storage unit is larger than a start voltage, for controlling the power converter to convert the electricity of the first electricity storage unit to the second electricity storage unit; wherein the battery monitoring unit disables the power converter through the control signal when the output voltage of the first electricity storage unit is less than a stop voltage, wherein the start voltage is larger than the stop voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification