POWER SOURCE SWITCHOVER APPARATUS AND METHOD
First Claim
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1. A battery-switching apparatus for switching between at least a first battery and a second battery, comprising:
- a first battery compartment having a first positive terminal and a first negative terminal;
a second battery compartment having a second positive terminal and a second negative terminal;
a comparator operatively electrically connected to the first negative terminal, electrically connected to the second negative terminal, configured to compare a first voltage at the first negative terminal with a second voltage at the second negative terminal, and configured to generate an output based on such comparison; and
a single boost converter electrically connected to each of the first and second battery compartments, the boost converter operative to draw power from a one of the first and second battery compartments based on the output of the comparator.
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Abstract
An apparatus for switching from a first power supply to a second power supply. Such an apparatus may determine which of the first and second power supplies has a greater voltage, and may power a device from the power supply having the greater voltage or charge. A single boost converter may be used regardless of which power supply is providing power.
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Citations
33 Claims
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1. A battery-switching apparatus for switching between at least a first battery and a second battery, comprising:
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a first battery compartment having a first positive terminal and a first negative terminal; a second battery compartment having a second positive terminal and a second negative terminal; a comparator operatively electrically connected to the first negative terminal, electrically connected to the second negative terminal, configured to compare a first voltage at the first negative terminal with a second voltage at the second negative terminal, and configured to generate an output based on such comparison; and a single boost converter electrically connected to each of the first and second battery compartments, the boost converter operative to draw power from a one of the first and second battery compartments based on the output of the comparator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for switching between at least a first battery and a second battery, comprising:
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detecting a first voltage at a negative terminal of the first battery; detecting a second voltage at a negative terminal of the second battery; determining which one of the first battery and the second battery has a greater voltage based on the detected first and second voltages; and in response to determining which one of the first battery and the second battery has a greater voltage, supplying power from the one of the first battery and the second battery having the greater voltage to a single boost converter. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification