Charging circuit and charger using the same
First Claim
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1. A charging circuit for charging a battery, comprising:
- a generator for generating an output voltage;
a step-down circuit for reducing the output voltage of said generator to a predetermined lower voltage; and
a current controller for controlling a charging current based on an amount of power generated by said generator, said charging current being supplied from said step-down circuit to said battery, wherein said step-down circuit receives an output of said generator, in charging, at a high voltage and a small current and is used to charge said battery at a low voltage and a large current.
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Abstract
A charging circuit includes a generator, a step-down circuit for reducing an output voltage of the generator to a predetermined voltage, a current controller for controlling a charging current that is supplied from the step-down circuit to a secondary battery, based on an amount of power generated by the generator, a mode selector for selecting charging modes, and a monitor for monitoring an amount of stored electricity. The step-down circuit receives an output of the generator, in charging, at a high voltage and a small current and is used to charge the battery at a low voltage and a large current.
42 Citations
14 Claims
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1. A charging circuit for charging a battery, comprising:
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a generator for generating an output voltage;
a step-down circuit for reducing the output voltage of said generator to a predetermined lower voltage; and
a current controller for controlling a charging current based on an amount of power generated by said generator, said charging current being supplied from said step-down circuit to said battery, wherein said step-down circuit receives an output of said generator, in charging, at a high voltage and a small current and is used to charge said battery at a low voltage and a large current. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A charger for charging a battery comprising:
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a generator for generating an output voltage;
a step-down circuit for reducing the output voltage of said generator to a predetermined lower voltage; and
a current controller for controlling a charging current based on an amount of power generated by said generator, said charging current being supplied from said step-down circuit to said battery, wherein said step-down circuit receives an output of said generator, in charging, at a high voltage and a small current and is used to charge said battery at a low voltage and a large current. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification