Mode selection circuit for a battery and method of operation thereof
First Claim
1. For use with a reserve battery couplable to a charging circuit capable of providing a charging current to said reserve battery, a mode selection circuit, comprising:
- a signal generator that generates a signal based on a temperature of said reserve battery;
a charge detection circuit that monitors a charge of said reserve battery and generates a signal as a function thereof; and
a mode-changing circuit, coupled to said signal generator and said charge detection circuit, that accepts said signals and selects an alternative one of;
a non-charge mode in which said charging current is substantially interrupted when said temperature is greater than a reference temperature or said charge is above a predetermined value, anda charge mode in which said charging current is provided to said reserve battery when said temperature is less than said reference temperature and said charge is below said predetermined value, said reference temperature being modifiable.
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Accused Products
Abstract
For use with a reserve battery couplable to a charging circuit capable of providing a charging current to the reserve battery, a mode selection circuit and a method of operation thereof. The mode selection circuit includes, in one embodiment, (1) a signal generator that generates a signal based on a temperature of the reserve battery and (2) a mode-changing circuit, coupled to the signal generator, that accepts the signal and selects an alternative one of: (a) a non-charge mode in which the charging current is substantially interrupted when the temperature is greater than a reference temperature and (b) a charge mode in which the charging current is provided to the reserve battery when the temperature is less than the reference temperature.
24 Citations
43 Claims
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1. For use with a reserve battery couplable to a charging circuit capable of providing a charging current to said reserve battery, a mode selection circuit, comprising:
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a signal generator that generates a signal based on a temperature of said reserve battery; a charge detection circuit that monitors a charge of said reserve battery and generates a signal as a function thereof; and a mode-changing circuit, coupled to said signal generator and said charge detection circuit, that accepts said signals and selects an alternative one of; a non-charge mode in which said charging current is substantially interrupted when said temperature is greater than a reference temperature or said charge is above a predetermined value, and a charge mode in which said charging current is provided to said reserve battery when said temperature is less than said reference temperature and said charge is below said predetermined value, said reference temperature being modifiable. - View Dependent Claims (2, 3, 4, 5, 6)
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7. For use with a reserve battery couplable to a charging circuit capable of providing a charging current to said reserve battery, a method of selecting modes for said reserve battery, comprising:
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providing a signal with a signal generator based on a temperature of said reserve battery; providing a signal with a charge detection circuit based on a charge of said reserve battery; and accepting said signals with a mode-changing circuit, coupled to said signal generator and said charge detection circuit, and selecting an alternative one of; a non-charge mode in which said charging current is substantially interrupted when said temperature is greater than a reference temperature or said charge is above a predetermined value, and a charge mode in which said charging current is provided to said reserve battery when said temperature is less than said reference temperature and said charge is below said predetermined value, said reference temperature being modifiable. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A battery back-up power supply, comprising:
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a source of electrical power; an AC/DC rectifier coupled to said source of electrical power; a reserve battery couplable to a said AC/DC rectifier, said AC/DC rectifier capable of charging said reserve battery; and a mode selection circuit, comprising; a signal generator that generates a signal based on a temperature of said reserve battery; a charge detection circuit that monitors a charge of said reserve battery and generates a signal as a function thereof; and a mode-changing circuit, coupled to said signal generator and said charge detection circuit, that accepts said signals and selects an alternative one of; a non-charge mode in which said charging current is substantially interrupted when said temperature is greater than a reference temperature or said charge is above a predetermined value, and a charge mode in which said charging current is provided to said reserve battery when said temperature is less than said reference temperature and said charge is below said predetermined value, said reference temperature being modifiable. - View Dependent Claims (14, 15, 16, 17)
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18. For use with a reserve battery couplable to a charging circuit capable of providing a charging current to said reserve battery, a mode selection circuit, comprising:
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a signal generator that generates a signal based on a temperature of said reserve battery; and a mode-changing circuit, having a low-voltage disconnect (LVD) and coupled to said signal generator, that accepts said signal and selects an alternative one of; a non-charge mode in which said charging current is substantially interrupted when said temperature is greater than a reference temperature, and a charge mode in which said charging current is provided to said reserve battery when said temperature is less than said reference temperature. - View Dependent Claims (19, 20, 21, 22, 23)
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24. For use with a reserve battery couplable to a charging circuit capable of providing a charging current to said reserve battery, a method of selecting modes for said reserve battery, comprising the steps of:
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providing a signal with a signal generator based on a temperature of said reserve battery; and accepting said signal with a mode-changing circuit, having a low-voltage disconnect (LVD) and coupled to said signal generator, and selecting an alternative one of; a non-charge mode in which said charging current is substantially interrupted when said temperature is greater than a reference temperature, and a charge mode in which said charging current is provided to said reserve battery when said temperature is less than said reference temperature. - View Dependent Claims (25, 26, 27, 28, 29)
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30. For use with a reserve battery couplable to a charging circuit capable of providing a charging current to said reserve battery, a mode selection circuit, comprising:
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a signal generator that includes a clock and generates a signal based on a temperature of said reserve battery; and a mode-changing circuit, coupled to said signal generator, that accepts said signal and selects an alternative one of; a non-charge mode in which said charging current is substantially interrupted when said temperature is greater than a reference temperature, and a charge mode in which said charging current is provided to said reserve battery when said temperature is less than said reference temperature. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. For use with a reserve battery couplable to a charging circuit capable of providing a charging current to said reserve battery, a method of selecting modes for said reserve battery, comprising the steps of:
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providing a signal with a signal generator including a clock based on a temperature of said reserve battery; and accepting said signal with a mode-changing circuit, coupled to said signal generator, and selecting an alternative one of; a non-charge mode in which said charging current is substantially interrupted when said temperature is greater than a reference temperature, and a charge mode in which said charging current is provided to said reserve battery when said temperature is less than said reference temperature. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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Specification