Charging system and method
First Claim
1. A method of charging a battery, comprising the steps of:
- receiving an input power supply signal that is used to charge a battery, wherein the input power supply signal continues to fluctuate after its receipt;
monitoring a voltage level of the input power supply signal to determine when the fluctuating 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 voltage level of the input power supply signal increases to reach the first predetermined threshold and deactivating the switch when the voltage level of the input power supply signal decreases to reach 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 that is used to charge a battery, wherein the input power supply signal continues to fluctuate after its receipt; monitoring a voltage level of the input power supply signal to determine when the fluctuating 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 voltage level of the input power supply signal increases to reach the first predetermined threshold and deactivating the switch when the voltage level of the input power supply signal decreases to reach 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 with a value high enough to maintain a voltage level of the input power supply signal to indicate that the electronic device is being charged to prevent disabling of a charging sequence for the battery; monitoring the voltage level of the input power supply signal to determine when the voltage level of 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 voltage level of the input power supply signal increases to reach the first predetermined threshold and deactivating the switch when the voltage level of the input power supply signal decreases to reach the second predetermined threshold, wherein the magnitude of the second predetermined threshold is lower than the magnitude of the first predetermined threshold.
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9. A charging system for charging a battery, comprising:
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an input for receiving an input power supply signal, wherein the input power supply signal continues to fluctuate after the input receives the 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 operable to; monitor a voltage level of said fluctuating input power supply signal to determine when the voltage level of 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 the voltage level of said input power supply signal increases to reach said first predetermined threshold and by deactivating said switch when the voltage level of said input power supply signal decreases to reach said second predetermined threshold. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification