Maximum and minimum power limit calculator for batteries and battery subpacks
First Claim
1. A system for determining an operating limit of at least one battery, comprising:
- a voltage module that measures a voltage V across at least one battery during first and second periods;
a current sensor that measures current I supplied by the at least one battery during said first and second periods; and
a limit module that estimates a sum of a polarization voltage VP and an open circuit voltage V0 of the at least one battery at said second period based on said voltage V and current I of the at least one battery at said first period and an ohmic resistance R0 of the at least one battery.
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Accused Products
Abstract
A system for determining an operating limit of at least one battery according to some embodiments of the present invention comprises a voltage module that measures a voltage V across at least one battery during first and second periods. A current sensor that measures current I supplied by the at least one battery during the first and second periods. A limit module estimates a sum of a polarization voltage VP and an open circuit voltage V0 of the at least one battery at the second period based on the voltage V and current I of the at least one battery at the first period and an ohmic resistance R0 of the at least one battery.
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Citations
26 Claims
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1. A system for determining an operating limit of at least one battery, comprising:
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a voltage module that measures a voltage V across at least one battery during first and second periods;
a current sensor that measures current I supplied by the at least one battery during said first and second periods; and
a limit module that estimates a sum of a polarization voltage VP and an open circuit voltage V0 of the at least one battery at said second period based on said voltage V and current I of the at least one battery at said first period and an ohmic resistance R0 of the at least one battery. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for determining an operating limit of a battery, comprising:
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a voltage module that measures voltage V across at least one battery at first and second periods;
a current sensor that measures current I supplied by the at least one battery at said first and second periods; and
a limit module that estimates a sum of a polarization voltage VP and an open circuit voltage V0 of the at least one battery at said second period based on said voltage V and current I of the at least one battery at said first period and an ohmic resistance R0 of the at least one battery. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for determining an operating limit of a battery, comprising:
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sampling voltage V across at least one battery at first and second periods;
sampling current I supplied by the at least one battery at said first and second periods; and
estimating a sum of a polarization voltage VP and an open circuit voltage V0 of the at least one battery at said second period based on said voltage V and current I of the at least one battery at said first period. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for determining an operating limit of a battery, comprising:
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sampling voltage V across at least one battery at first and second periods;
sampling current I supplied by the at least one battery at said first and second periods; and
estimating a sum of a polarization voltage VP and an open circuit voltage V0 of the at least one battery at said second period based on said voltage V and current I of the at least one battery at said first period. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification