ESTIMATED REMAINING LIFE OF A BATTERY INCLUDED IN AN UNINTERRUPTIBLE POWER SUPPLY
First Claim
1. A method for estimating a remaining life of at least one battery in an uninterruptible power supply (UPS), comprising:
- retrieving from memory a remaining life value for said at least one battery;
determining whether said at least one battery is being used to power at least one load;
measuring a temperature of at least said at least one battery; and
using at least one algorithm, said remaining life value, said determination of whether said at least one battery is being used to power said at least one load, and said temperature to estimate said remaining life of said at least one battery.
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Accused Products
Abstract
An uninterruptible power supply (“UPS”) is provided with a backup power supply that has an adjustable reserve power level that is based on a user'"'"'s input and/or is configured to notify a user if a battery included in the UPS needs to be replaced. In one embodiment of the present invention, the UPS (or a circuit included therein) estimates a remaining life (ERL) of the battery by considering various battery conditions, including, but not limited to, a predetermined battery life expectancy, whether the battery is being used to power a load, and battery temperature. If it is estimated that the ERL is low, or below a predetermined threshold, then the UPS (or a circuit included therein) is configured to notify a user that the battery needs to be replaced.
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Citations
20 Claims
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1. A method for estimating a remaining life of at least one battery in an uninterruptible power supply (UPS), comprising:
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retrieving from memory a remaining life value for said at least one battery; determining whether said at least one battery is being used to power at least one load; measuring a temperature of at least said at least one battery; and using at least one algorithm, said remaining life value, said determination of whether said at least one battery is being used to power said at least one load, and said temperature to estimate said remaining life of said at least one battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An uninterruptible power supply (UPS) comprising:
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an AC/DC converter in communication with an AC power source; at least one battery selectively connected to at least one load; a battery charger in communication with said AC/DC converter and said at least one battery for charging said at least one battery; and a test circuit in communication with said at least one battery and adapted to estimate a remaining life of said at least one battery using at least (i) a prior remaining life value of said at least one battery, (ii) a value indicative of whether said at least one battery is being used to power said at least one load, and (iii) a temperature of at least said at least one battery. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An uninterruptible power supply (UPS) comprising:
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an AC/DC converter in communication with an AC power source; at least one battery selectively connected to an AC output; a DC/AC converter in communication with said at least one battery and said AC output; a battery charger in communication with said AC/DC converter and said at least one battery for charging said at least one battery; and a test circuit in communication with said at least one battery and adapted to estimate a remaining life of said at least one battery using at least (i) a prior remaining life value of said at least one battery, (ii) a value indicative of whether said at least one battery is connected to said AC output, and (iii) a temperature of at least said at least one battery.
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Specification