State of charge determination systems and methods
First Claim
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1. A method, comprising:
- receiving, by a processor, voltage values corresponding to a battery system;
receiving, by the processor, charge values corresponding to charge flowing through the battery system;
analyzing, by the processor, at least the received voltage values over at least one defined duration period of time;
determining, by the processor, anchoring points of charge integration that satisfy respective defined conditions for respective defined duration periods of time by a defined quantity of repetition of conditions based at least in part on the received voltage and time, wherein the defined quantity of repetition is greater than 1;
updating, by the processor, a capacity of the battery system by assigning the determined anchoring points that satisfy the respective defined conditions as updated anchoring points of the charge integration thereby replacing values of previously assigned anchoring points; and
determining, by the processor, a state of charge based on the updated anchoring points of the charge integration.
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Abstract
In one embodiment, a method implemented by a processor, comprising receiving voltage values corresponding to a battery system, receiving charge values corresponding to charge flowing through the battery system, and determining a state of charge based on specified anchoring points of a charge integration, the anchoring points based on the received voltage and time.
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Citations
17 Claims
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1. A method, comprising:
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receiving, by a processor, voltage values corresponding to a battery system; receiving, by the processor, charge values corresponding to charge flowing through the battery system; analyzing, by the processor, at least the received voltage values over at least one defined duration period of time; determining, by the processor, anchoring points of charge integration that satisfy respective defined conditions for respective defined duration periods of time by a defined quantity of repetition of conditions based at least in part on the received voltage and time, wherein the defined quantity of repetition is greater than 1; updating, by the processor, a capacity of the battery system by assigning the determined anchoring points that satisfy the respective defined conditions as updated anchoring points of the charge integration thereby replacing values of previously assigned anchoring points; and determining, by the processor, a state of charge based on the updated anchoring points of the charge integration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A state of charge determination system, comprising:
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battery voltage sensing logic configured to sense a voltage of a battery system; shunt voltage sensing logic configured to sense a charge flowing through the battery system; and a processor configured to; receive values corresponding to the sensed voltage and charge; analyze at least the sensed voltage and charge values over at least one defined duration period of time; determine anchoring points of charge integration that satisfy respective defined conditions for respective defined duration periods of time by a defined quantity of repetition of conditions based at least in part on the sensed voltage, time, and current, wherein the defined quantity of repetition is greater than 1; update a capacity of the battery system by assigning the determined anchoring points that satisfy the respective defined conditions as updated anchoring points of the charge integration thereby replacing values of previously assigned anchoring points; and determine a state of charge based on the updated anchoring points. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification