Recharging energy storage cells using capacitive storage device
First Claim
Patent Images
1. A handheld medical device comprising:
- an electrically powered device including a medical examination instrument;
one or more energy storage cells configured to store energy and electrically coupled to the electrically powered device to supply energy to the electrically powered device;
output interface circuitry electrically connected to the energy storage cells and to the electrically powered device to deliver energy from the energy storage cells to the electrically powered device and to power the electrically powered device from the energy storage cells;
a capacitive storage device configured to receive and store energy from an external power source;
boost circuitry configured to boost a voltage from the capacitive storage device;
a charging circuit configured to receive energy having a boosted voltage and to recharge the storage cells using the energy having the boosted voltage; and
charging interface circuitry electrically coupled to the capacitive storage device to receive energy from an external power source and to deliver the received energy to the capacitive storage device.
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Abstract
A handheld device includes a capacitive storage device and energy storage cells. The capacitive storage device can be rapidly charged. The energy from the capacitive storage device is used to recharge the energy storage cells over a longer period of time.
17 Citations
18 Claims
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1. A handheld medical device comprising:
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an electrically powered device including a medical examination instrument; one or more energy storage cells configured to store energy and electrically coupled to the electrically powered device to supply energy to the electrically powered device; output interface circuitry electrically connected to the energy storage cells and to the electrically powered device to deliver energy from the energy storage cells to the electrically powered device and to power the electrically powered device from the energy storage cells; a capacitive storage device configured to receive and store energy from an external power source; boost circuitry configured to boost a voltage from the capacitive storage device; a charging circuit configured to receive energy having a boosted voltage and to recharge the storage cells using the energy having the boosted voltage; and charging interface circuitry electrically coupled to the capacitive storage device to receive energy from an external power source and to deliver the received energy to the capacitive storage device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of charging energy storage cells of a medical examination instrument including an electrically powered device, the method comprising:
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connecting the medical examination instrument including an electrically powered device to an external power source to supply power; charging a capacitive storage device of the medical examination instrument using the power; boosting a voltage from the capacitive storage device; charging the energy storage cells using the boosted voltage; and powering the electrically powered device of the medical examination instrument from the energy storage cells. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An electronic medical device comprising:
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one or more electronic devices requiring electrical power in order to perform one or more intended medical examination functions; and electronic power supply circuitry configured to store and to deliver the electrical power to the one or more electronic devices, wherein the electronic power supply circuitry comprises; charging interface circuitry including electrical contacts arranged and configured to receive energy from a charging station; a capacitive storage device comprising at least one capacitor electrically coupled to the charging interface circuitry to receive the energy from the charging interface when the charging interface is connected to the charging station; voltage boost circuitry electrically coupled to the capacitive storage device, and arranged and configured to generate an output having a substantially constant output; a charging circuit electrically coupled to the voltage boost circuitry to receive the output; energy storage cells electrically coupled to the charging circuit, wherein the charging circuit operates to recharge the energy storage cells using the energy stored in the capacitive storage device; and output interface circuitry electrically coupled to the energy storage cells to deliver energy from the energy storage cells to the one or more electronic devices. - View Dependent Claims (17, 18)
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Specification