Self-diagnosis system for an energy storage device
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Accused Products
Abstract
A self-diagnosis system for an energy storage device, the latter including a plurality of electrochemical cells connected in series or parallel to form a cell string. The self-diagnosis system correlates a state of health of the battery based on the internal resistance value of each electrochemical cell of the energy storage device and determines a corresponding battery initial capacity which enables the self-diagnosis system to evaluate the exact capacity of the battery at any given time.
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Citations
40 Claims
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1-20. -20. (canceled)
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21. A self-diagnosis system for an energy storage device, the energy storage device comprising a plurality of electrochemical cells, said self-diagnosis system comprising:
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a cell selector for selecting individual ones of the electrochemical cells; and
a processing unit coupled to said cell selector, said processing unit being operative for;
deriving information regarding a respective internal resistance of each one of the electrochemical cells selected by said cell selector; and
deriving an indication of a state of health of the energy storage device based at least in part on the information regarding the respective internal resistance of each one of the electrochemical cells selected by said cell selector. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. An energy storage device comprising:
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a plurality of electrochemical cells; and
a self-diagnosis system comprising;
a cell selector for selecting individual ones of said electrochemical cells; and
a processing unit coupled to said cell selector, said processing unit being operative for;
deriving information regarding a respective internal resistance of each one of said electrochemical cells selected by said cell selector; and
deriving an indication of a state of health of said energy storage device based at least in part on the information regarding the respective internal resistance of each one of said electrochemical cells selected by said cell selector.
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40. A method for self-diagnosis of an energy storage device, the energy storage device comprising a plurality of electrochemical cells, said method comprising:
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selecting individual ones of the electrochemical cells;
deriving information regarding a respective internal resistance of each selected one of the electrochemical cells; and
deriving an indication of a state of health of the energy storage device based at least in part on the information regarding the respective internal resistance of each selected one of the electrochemical cells.
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Specification