Energy storage system
First Claim
1. An energy storage device having an output for providing electrical charge, said energy storage device including regularly spaced current pulses to an electronic device, said energy storage device comprisingat least one battery cell for providing a substantially constant current output;
- at least one capacitor connected across the output of said energy storage device for providing said current pulses; and
current controller means disposed between said battery cell and said capacitor for limiting current from said battery during said current pulses, said current controller means comprising;
a first switch disposed between said battery cell and said electrical device;
a second switch disposed between said capacitor and said electronic device; and
a controller electrically coupled to said first and second switches and responsive to said current pulses.
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Accused Products
Abstract
A hybrid energy storage system (10) including a first energy storage device (12), such as a secondary or rechargeable battery, and a second energy storage device (14), such as an electrochemical capacitor. The electrochemical capacitor provides intermittent energy bursts to satisfy the power requires of, for example, pulsed power communication devices. The first and second energy storage devices are coupled to a current controller to assure that pulse transients are not applied to the battery cell as a result of charging the capacitor.
47 Citations
10 Claims
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1. An energy storage device having an output for providing electrical charge, said energy storage device including regularly spaced current pulses to an electronic device, said energy storage device comprising
at least one battery cell for providing a substantially constant current output; -
at least one capacitor connected across the output of said energy storage device for providing said current pulses; and current controller means disposed between said battery cell and said capacitor for limiting current from said battery during said current pulses, said current controller means comprising; a first switch disposed between said battery cell and said electrical device; a second switch disposed between said capacitor and said electronic device; and a controller electrically coupled to said first and second switches and responsive to said current pulses. - View Dependent Claims (2, 3, 4, 5)
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6. An energy storage device having an output for providing an electrical charge, including regularly spaced current pulses to an electronic device, said device comprising:
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at least one battery cell connected to said output; at least one capacitor connected across said output for providing said current pulses; and electronic circuitry disposed between said battery and said capacitor comprising a first switch disposed between said battery and said output, a second switch disposed between said capacitor, and said output, and a controller electrically coupled to each said switch, and responsive to said current pulses. - View Dependent Claims (7, 8, 9, 10)
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Specification