High-Power Ultracapacitor Energy Storage Pack and Method of Use
First Claim
1. An ultracapacitor energy storage cell pack, comprising:
- an ultracapacitor assembly including a plurality of parallel ultracapacitors and balancing resistors in series, each balancing resistor in parallel with each ultracapacitor to automatically discharge each ultracapacitor over time, thereby balancing the ultracapacitors of the ultracapacitor assembly;
an enclosure to enclose and protect the ultracapacitor assembly;
one or more temperature sensors to monitor temperature of the ultracapacitor assembly;
a pack voltage sensor to monitor voltage of the ultracapacitor assembly;
a ground fault sensor to monitor for a ground fault condition of the ultracapacitor assembly;
a cooling system to cool the ultracapacitor assembly;
an on/off relay coupled to the ultracapacitor assembly and a-control input, the on/off relay activated during normal operation of the ultracapacitor assembly and deactivated by the control input to terminate normal operation.
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Accused Products
Abstract
An ultracapacitor energy storage cell pack includes an ultracapacitor assembly including a plurality of parallel ultracapacitors and balancing resistors in series; an enclosure for the ultracapacitor assembly; a controller; one or more temperature sensors; a pack voltage sensor; a GFI sensor; one or more cooling fans carried by the enclosure; an on/off relay coupled to the ultracapacitor assembly and the controller, the on/off relay activated by the controller during normal operation of the ultracapacitor assembly and deactivated by the controller when the GFI sensor detects a ground fault interrupt condition, the one or more temperature sensors detect an over-temperature condition, or the pack voltage sensor detects an over-voltage condition; and a pre-charge resistor and a pre-charge relay coupled to the ultracapacitor assembly and the controller, and activated by the controller to cause the pre-charge resistor to limit pack charge current until the ultracapacitor assembly reaches a minimum voltage.
54 Citations
33 Claims
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1. An ultracapacitor energy storage cell pack, comprising:
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an ultracapacitor assembly including a plurality of parallel ultracapacitors and balancing resistors in series, each balancing resistor in parallel with each ultracapacitor to automatically discharge each ultracapacitor over time, thereby balancing the ultracapacitors of the ultracapacitor assembly;
an enclosure to enclose and protect the ultracapacitor assembly;
one or more temperature sensors to monitor temperature of the ultracapacitor assembly;
a pack voltage sensor to monitor voltage of the ultracapacitor assembly;
a ground fault sensor to monitor for a ground fault condition of the ultracapacitor assembly;
a cooling system to cool the ultracapacitor assembly;
an on/off relay coupled to the ultracapacitor assembly and a-control input, the on/off relay activated during normal operation of the ultracapacitor assembly and deactivated by the control input to terminate normal operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An ultracapacitor energy storage cell pack, comprising:
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an ultracapacitor assembly including a plurality of parallel ultracapacitors and balancing resistors in series, each balancing resistor in parallel with each ultracapacitor to automatically discharge each ultracapacitor over time, thereby balancing the ultracapacitors of the ultracapacitor assembly;
an enclosure to enclose and protect the ultracapacitor assembly; and
one or more middle plate supports with cutouts that receive the ultracapacitors and balancing resistors. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 33)
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Specification