Power supply system and electronic device
First Claim
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1. A power supply system for supplying power to a load, comprising:
- a generator section for performing power generation;
a current converter section that is connected to the generator section and that controls an output from the generator section to be a constant current, thereby to supply the power to the load;
a charging and discharging control circuit that is coupled to an output from the current converter section and that charges a power storage section in a next stage;
the power storage section that is connected to the charging and discharging control circuit and that performs charging and discharging; and
a control section for controlling the output from the current converter section and an output from the charging and discharging control circuit,whereinwhen a current value necessary to operate the load is lower than or equal to a current value of the constant current, the power is supplied to the load from the generator section, and the power storage section is charged; and
when the current value necessary to operate the load is higher than the current value of the constant current, the power is supplied to the load from both the generator section and the power storage section.
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Abstract
An output from a generator section is controlled by a current converter section to be a constant current. Charging and discharging of a power storage section is controlled by a charge/discharge control circuit. Thereby, even in a case where a current value required by a load is high, the case can be dealt with in the manner that, while an output current from the generator section is being maintained constant, the output from the generator section and an output from the power storage section can be caused to function in cooperation with each other. Further, charging and discharging of the power storage section can be performed by a simplified device.
155 Citations
10 Claims
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1. A power supply system for supplying power to a load, comprising:
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a generator section for performing power generation; a current converter section that is connected to the generator section and that controls an output from the generator section to be a constant current, thereby to supply the power to the load; a charging and discharging control circuit that is coupled to an output from the current converter section and that charges a power storage section in a next stage; the power storage section that is connected to the charging and discharging control circuit and that performs charging and discharging; and a control section for controlling the output from the current converter section and an output from the charging and discharging control circuit, wherein when a current value necessary to operate the load is lower than or equal to a current value of the constant current, the power is supplied to the load from the generator section, and the power storage section is charged; and when the current value necessary to operate the load is higher than the current value of the constant current, the power is supplied to the load from both the generator section and the power storage section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power supply system for supplying power to a load, comprising:
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a generator section for performing power generation; a current converter section that is connected to the generator section and that controls an output from the generator section to be a constant current, thereby to supply the power to the load; a charging and discharging control circuit that is coupled to an output from the current converter section and that charges a power storage section in a next stage; the power storage section that is connected to the charging and discharging control circuit and that performs charging and discharging; and a control section for controlling the output from the current converter section and an output from the charging and discharging control circuit, wherein when a current value necessary to operate the load is lower than or equal to a current value of the constant current, the power is supplied to the load in a current value higher than the current value necessary to operate the load.
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9. A power supply system for supplying power to a load, comprising:
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a generator section for performing power generation; a current converter section that is connected to the generator section and that controls an output from the generator section to be a constant current, thereby to supply the power to the load; a charging and discharging control circuit that is coupled to an output from the current converter section and that charges a power storage section in a next stage; the power storage section that is connected to the charging and discharging control circuit and that performs charging and discharging; and a control section for controlling the output from the current converter section and an output from the charging and discharging control circuit, wherein when a current value necessary to operate the load is higher than a current value of the constant current, charging of the power storage section is stopped.
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10. An electronic device connected to a power supply system comprising:
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a generator section for performing power generation; a current converter section that is connected to the generator section and that controls an output from the generator section to be a constant current, thereby to supply the power to the load; a charging and discharging control circuit that is coupled to an output from the current converter section and that charges a power storage section in a next stage; the power storage section that is connected to the charging and discharging control circuit and that performs charging and discharging; and a control section for controlling the output from the current converter section and an output from the charging and discharging control circuit, wherein when a current value necessary to operate the load is lower than or equal to a current value of the constant current, the power is supplied to the load from the generator section, and the power storage section is charged; and when the current value necessary to operate the load is higher than the current value of the constant current, the power is supplied to the load from both the generator section and the power storage section.
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Specification