Mode selection circuit for a battery, a method of selecting modes for the battery and a battery back-up power supply employing the circuit and method
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 time of day; and
a mode-changing circuit, coupled to said signal generator, that accepts said signal and selects an alternative one of;
a charge mode in which said charging current is provided to said reserve battery during a predetermined time of day, anda non-charge mode in which said charging current is substantially interrupted during time periods other than said predetermined time of day.
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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.
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Citations
23 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 time of day; and a mode-changing circuit, coupled to said signal generator, that accepts said signal and selects an alternative one of; a charge mode in which said charging current is provided to said reserve battery during a predetermined time of day, and a non-charge mode in which said charging current is substantially interrupted during time periods other than said predetermined time of day. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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 based on a time of day with a signal generator; and accepting said signal with a mode-changing circuit, coupled to said signal generator, and selecting an alternative one of; a charge mode in which said charging current is provided to said reserve battery during a predetermined time of day, and a non-charge mode in which said charging current is substantially interrupted during time periods other than said predetermined time of day. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. 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, including; a signal generator that generates a signal based on a time of day, and a mode-changing circuit, coupled to said signal generator, that accepts said signal and selects an alternative one of; a charge mode in which said charging current is provided to said reserve battery during a predetermined time of day, and a non-charge mode in which said charging current is substantially interrupted during time periods other than said predetermined time of day. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification