Temperature-controlled battery reserve system and method of operation thereof
First Claim
1. For use in a battery reserve system having a reserve battery, a charging circuit coupled between a source of electrical power and said reserve battery for charging said reserve battery and a heating element in thermal communication with said reserve battery for increasing a temperature of said battery, a mode selection circuit, comprising:
- a temperature transducer, coupled to said reserve battery, for sensing said temperature of said reserve battery; and
a mode-changing circuit, coupled to said temperature transducer, for selecting an alternative one of;
a heating mode wherein said source of electrical power is coupled to said heating element when said temperature of said reserve battery is less than a reference temperature thereby to heat said reserve battery, anda charging mode wherein said source of electrical power is coupled to said reserve battery when said temperature is greater than said reference temperature thereby to charge said reserve battery.
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Accused Products
Abstract
For use in a battery reserve system having a reserve battery, a charging circuit coupled between a source of electrical power and the reserve battery for charging the reserve battery and a heating element in thermal communication with the reserve battery for increasing a temperature of the battery, a mode selection circuit and method of operation thereof. The mode selection circuit includes: (1) a temperature transducer, coupled to the reserve battery, for sensing the temperature of the reserve battery and (2) a mode-changing circuit, coupled to the temperature transducer, for selecting an alternative one of: (a) a heating mode wherein the source of electrical power is coupled to the heating element when the temperature of the reserve battery is less than a reference temperature thereby to heat the reserve battery and (b) a charging mode wherein the source of electrical power is coupled to the reserve battery when the temperature is greater than the reference temperature thereby to charge the reserve battery.
55 Citations
21 Claims
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1. For use in a battery reserve system having a reserve battery, a charging circuit coupled between a source of electrical power and said reserve battery for charging said reserve battery and a heating element in thermal communication with said reserve battery for increasing a temperature of said battery, a mode selection circuit, comprising:
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a temperature transducer, coupled to said reserve battery, for sensing said temperature of said reserve battery; and a mode-changing circuit, coupled to said temperature transducer, for selecting an alternative one of; a heating mode wherein said source of electrical power is coupled to said heating element when said temperature of said reserve battery is less than a reference temperature thereby to heat said reserve battery, and a charging mode wherein said source of electrical power is coupled to said reserve battery when said temperature is greater than said reference temperature thereby to charge said reserve battery. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. For use in a battery reserve system having a reserve battery, a charging circuit coupled between a source of electrical power and said reserve battery for charging said reserve battery and a heating element in thermal communication with said reserve battery for increasing a temperature of said battery, a method of selecting modes of said battery reserve system, comprising the steps of:
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sensing said temperature of said reserve battery with a temperature transducer coupled to said reserve battery; and selecting an alternative one of; a heating mode wherein said source of electrical power is coupled to said heating element when said temperature of said reserve battery is less than a reference temperature thereby to heat said reserve battery, and a charging mode wherein said source of electrical power is coupled to said reserve battery when said temperature is greater than said reference temperature thereby to charge said reserve battery. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A battery back-up power supply, comprising:
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a primary power supply; and a battery reserve system, comprising; a reserve battery; a charging circuit coupled between a source of electrical power and said reserve battery for charging said reserve battery; a heating element in thermal communication with said reserve battery for increasing a temperature of said battery; and a mode selection circuit, comprising; a temperature transducer, coupled to said reserve battery, for sensing said temperature of said reserve battery; and a mode-changing circuit, coupled to said temperature transducer, for selecting an alternative one of; a heating mode wherein said source of electrical power is coupled to said heating element when said temperature of said reserve battery is less than a reference temperature thereby to heat said reserve battery, and a charging mode wherein said source of electrical power is coupled to said reserve battery when said temperature is greater than said reference temperature thereby to charge said reserve battery. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification