Battery End of Life Determination
First Claim
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1. A method for determining an end of life of a battery, comprising:
- determining a discharge capacity of the battery at a given moment in time;
determining a discharge capacity at a functional endpoint of the battery; and
determining a fuel remaining in the battery at the given moment in time as a function of both the discharge capacity at the given moment in time and the discharge capacity of the battery at the functional endpoint of the battery, wherein the determined fuel remaining is indicative of an end of life of the battery.
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Abstract
A method for determining an end of life of a battery includes determining a discharge capacity of the battery at a given moment in time, determining a discharge capacity at a functional endpoint of the battery, and determining a fuel remaining in the battery at the given moment in time as a function of both the discharge capacity at the given moment in time and the discharge capacity of the battery at the functional endpoint of the battery. The determined fuel remaining is indicative of an end of life of the battery.
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Citations
31 Claims
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1. A method for determining an end of life of a battery, comprising:
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determining a discharge capacity of the battery at a given moment in time; determining a discharge capacity at a functional endpoint of the battery; and determining a fuel remaining in the battery at the given moment in time as a function of both the discharge capacity at the given moment in time and the discharge capacity of the battery at the functional endpoint of the battery, wherein the determined fuel remaining is indicative of an end of life of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for determining an end of life of a battery, comprising:
determining an end of life of a battery based on both a discharge capacity at a functional endpoint of the battery and a discharge capacity at a given time, wherein the discharge capacity at a given time is determined via coulomb counting. - View Dependent Claims (16, 17, 18)
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19. A method for determining an end of life of a battery, comprising:
determining an end of life of a battery based on both a discharge capacity at a functional endpoint of the battery and a discharge capacity at a given time, wherein the discharge capacity at a given time is determined based on both a closed circuit voltage of the battery and a temperature about the battery. - View Dependent Claims (20, 21, 22, 23)
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24. A battery powered appliance, comprising:
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memory that stores battery fuel gauging instructions; a battery receiving region configured to receive at least one battery, wherein the battery receiving region includes at least one electrical contact that electrically communicates with a battery inserted into the battery receiving region; and a processor in operative communication with the memory and the at least one electrical contact of the battery receiving region; wherein the processor causes execution of the battery fuel gauging instructions, which determines a remaining life of the battery installed in the battery receiving region based at least in part on information about the battery obtained via the at least one electrical contact, and the processor invokes at least one action when the determined remaining life of the battery is below a preset fuel level; and wherein the battery fuel gauging instructions determine the remaining life of the battery as a function of both a discharge capacity of the battery and an expected discharge capacity at a functional endpoint of the battery. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification