High-Power Ultracapacitor Energy Storage Pack and Method of Use
First Claim
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1. An ultracapacitor energy storage cell pack, comprising:
- an ultracapacitor assembly including a plurality of ultracapacitors in series;
a plurality of interconnections for mechanically and electrically interconnecting the ultracapacitors;
a plurality of balancing resistors, each balancing resistor in parallel with each ultracapacitor to form a resistor divider network that automatically discharges and equalizes each ultracapacitor over time, thereby balancing the ultracapacitors of the ultracapacitor assembly, and each balancing resistor directly mechanically and electrically connected to an associated interconnection.
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Abstract
An ultracapacitor energy storage cell pack including an ultracapacitor assembly including a plurality of ultracapacitors in series; a plurality of interconnections for mechanically and electrically interconnecting the ultracapacitors; and a plurality of balancing resistors, each balancing resistor in parallel with each ultracapacitor to form a resistor divider network that automatically discharges and equalizes each ultracapacitor over time, thereby balancing the ultracapacitors of the ultracapacitor assembly, and each balancing resistor directly mechanically and electrically connected to an associated interconnection.
65 Citations
17 Claims
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1. An ultracapacitor energy storage cell pack, comprising:
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an ultracapacitor assembly including a plurality of ultracapacitors in series;
a plurality of interconnections for mechanically and electrically interconnecting the ultracapacitors;
a plurality of balancing resistors, each balancing resistor in parallel with each ultracapacitor to form a resistor divider network that automatically discharges and equalizes each ultracapacitor over time, thereby balancing the ultracapacitors of the ultracapacitor assembly, and each balancing resistor directly mechanically and electrically connected to an associated interconnection. - View Dependent Claims (2, 3, 4, 5)
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6. An ultracapacitor energy storage cell pack, comprising:
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an ultracapacitor assembly including a plurality of ultracapacitors in series, the ultracapacitors including ends with end terminals having male externally threaded studs;
a plurality of interconnections for mechanically and electrically interconnecting the ultracapacitors;
an end support plate having a pattern of holes to receive the male externally threaded studs of the ultracapacitors; and
a fastening arrangement for mounting the end support plate and the interconnections to the end terminals so that the interconnections are mechanically and electrically directly connected to the end terminals, and the interconnections are disposed between the end support plate and the ends of the ultracapacitors. - View Dependent Claims (7, 8, 9)
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10. 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 form a resistor divider network that automatically discharges and equalizes 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 isolation sensor to monitor for a ground fault condition of the ultracapacitor assembly;
a cooling system to cool the ultracapacitor assembly; and
an on/off relay coupled to the ultracapacitor assembly and an external control input, the on/off relay activated during normal operation of the ultracapacitor assembly and deactivated by the external control input to terminate normal operation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification