Charging system and method
First Claim
1. A method of charging a battery, comprising the steps of:
- receiving an input power supply signal;
monitoring the input power supply signal to determine when the input power supply signal reaches first and second predetermined thresholds; and
in response to said monitoring step, selectively controlling a charging switch that controls the flow of the input power supply signal to the battery, wherein said controlling step comprises activating the switch when the input power supply signal reaches the first predetermined threshold and deactivating the switch when the input power supply signal reaches the second predetermined threshold.
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Accused Products
Abstract
The invention concerns a method (200) and system (100) for charging a battery (110). The method includes the steps of receiving (212) an input power supply signal (300), monitoring (216) the input power supply signal to determine when the input power supply signal reaches first and second predetermined thresholds (314, 316) and in response to the monitoring step, selectively controlling (217) a charging switch (122) that controls the flow of the input power supply signal to the battery. The controlling step can include activating (220) the charging switch when the input power supply signal reaches the first predetermined threshold and deactivating (226) the switch when the input power supply signal reaches the second predetermined threshold.
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Citations
15 Claims
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1. A method of charging a battery, comprising the steps of:
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receiving an input power supply signal;
monitoring the input power supply signal to determine when the input power supply signal reaches first and second predetermined thresholds; and
in response to said monitoring step, selectively controlling a charging switch that controls the flow of the input power supply signal to the battery, wherein said controlling step comprises activating the switch when the input power supply signal reaches the first predetermined threshold and deactivating the switch when the input power supply signal reaches the second predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of charging a battery, comprising the steps of:
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receiving an input power supply signal in an electronic device having a capacitor for maintaining a voltage to indicate that the electronic device is being charged;
monitoring the input power supply signal to determine when the input power supply signal reaches first and second predetermined thresholds;
selectively controlling a charging switch that controls the flow of the input power supply signal to the battery, wherein said controlling step comprises activating the switch when the input power supply signal reaches the first predetermined threshold and deactivating the switch when the input power supply signal reaches the second predetermined threshold, wherein practicing said monitoring and controlling steps reduces the minimum value of the capacitor as compared to the minimum value required of a second capacitor that is used to provide voltage to the battery when the input power supply signal drops below the second predetermined threshold.
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9. A charging system for charging a battery, comprising:
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a coil for receiving an input power supply signal;
a charging switch for controlling the flow of said input power supply signal to said battery; and
a controller, wherein said controller is programmed to;
monitor said input power supply signal to determine when said input power supply signal reaches first and second predetermined thresholds; and
in response to the monitoring process, selectively control said charging switch by activating said charging switch when said input power supply signal reaches said first predetermined threshold and by deactivating said switch when said input power supply signal reaches said second predetermined threshold. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification