Supercapacitor balancing method and system
First Claim
1. A method of charging at least one supercapacitor comprising steps of:
- bypassing the current flowing in said supercapacitor so that, when the voltage at the terminals of said supercapacitor reaches a predetermined value, constituting a threshold voltage, the bypass current assumes a maximum value constituting a nominal bypass current, monitoring of a charging current of said supercapacitor as a function of the voltage at the terminals of said supercapacitor by a voltage detector logic function, wherein said voltage detector logic function comprises an optimization function, capable of changing from an activated state to a deactivated state when the voltage at the terminals of said supercapacitor exceeds a first predefined voltage greater than the threshold voltage and then capable of returning to the activated state when said voltage at the terminals of said supercapacitor falls below a second predefined voltage less than or equal to said first predefined voltage.
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Accused Products
Abstract
The present invention relates to a method of and a system for charging at least one supercapacitor that is particularly suitable for balancing supercapacitors. The method includes a step (22) of bypassing the current flowing in the supercapacitor so that, when the voltage (V) at the terminals of said supercapacitor reaches a threshold voltage (VS), the bypass current (IBP) assumes a maximum value, which method is characterized in that it includes a step (21) of monitoring of the charging current (IC) of said supercapacitor as a function of the voltage (V) at the terminals of said supercapacitor by a voltage detector logic function (F0) able to change from an activated state to a deactivated state when the voltage (V) at the terminals of said supercapacitor exceeds a first predefined voltage (VOH) greater than the threshold voltage (VS) and then to return to the activated state when said voltage (V) at the terminals of said supercapacitor falls below a second predefined voltage (VOB) less than or equal to said first predefined voltage (VOH).
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Citations
17 Claims
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1. A method of charging at least one supercapacitor comprising steps of:
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bypassing the current flowing in said supercapacitor so that, when the voltage at the terminals of said supercapacitor reaches a predetermined value, constituting a threshold voltage, the bypass current assumes a maximum value constituting a nominal bypass current, monitoring of a charging current of said supercapacitor as a function of the voltage at the terminals of said supercapacitor by a voltage detector logic function, wherein said voltage detector logic function comprises an optimization function, capable of changing from an activated state to a deactivated state when the voltage at the terminals of said supercapacitor exceeds a first predefined voltage greater than the threshold voltage and then capable of returning to the activated state when said voltage at the terminals of said supercapacitor falls below a second predefined voltage less than or equal to said first predefined voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
at least one supercapacitor, a bypass circuit comprising a transistor operating in switching mode and connected in parallel with the terminals of said supercapacitor, charging means, and a detector unit delivering at least one logic signal representing the voltage at the terminals of said supercapacitor, said logic signal being supplied to said charging means.
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14. The system according to claim 13, comprising a low-pass filter connected in parallel with the terminals of said supercapacitor.
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15. The system according to claim 13, further comprising a plurality of supercapacitors connected in series, a bypass circuit being connected in parallel to the terminals of each of said supercapacitors.
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16. The system according to claim 13, further comprising a plurality of supercapacitors connected in series, a single bypass circuit being connected in parallel to the terminals of all of said supercapacitors.
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17. The system according to claim 13, further comprising a plurality of supercapacitors connected in parallel, a single bypass circuit being connected in parallel to the terminals of all of said supercapacitors.
Specification