METHOD FOR DETERMINING A STATE OF A RECHARGEABLE BATTERY DEVICE IN REAL TIME
First Claim
1. A method of determining and predicting a state of a rechargeable battery device in real time, comprising:
- via respective measuring devices, measuring a current and a voltage of the rechargeable battery in real time;
via a processor operatively coupled to memory and to a computer-readable medium encoded with an algorithm for determining the state of the rechargeable battery device in real time, utilizing the measured current and voltage in the algorithm, wherein the algorithm comprises;
a first mathematical model based on a direct solution of at least one differential equation characterizing an equivalent RC circuit of the rechargeable battery as a function of time, wherein the first mathematical model is configured to generate a plurality of parameters that are usable to determine the state of the rechargeable battery; and
a second mathematical model configured to regress the plurality of parameters over time; and
a third mathematical model configured to estimate the state of the rechargeable battery; and
via the processor, applying the algorithm to determine the state of the rechargeable battery.
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Abstract
A method of determining and predicting a state of a rechargeable battery device in real time involves measuring a current and a voltage of the rechargeable battery in real time, inputting the measured current and voltage into an algorithm, and applying the algorithm to determine the state of the rechargeable battery. The algorithm includes a first mathematical model based on a direct solution of at least one differential equation characterizing an equivalent RC circuit of the battery as a function of time. The first model generates a plurality of parameters that are usable to determine the state of the battery. The algorithm further includes a second mathematical model configured to regress the parameters over time, and a third mathematical model configured to estimate the state of the battery.
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Citations
20 Claims
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1. A method of determining and predicting a state of a rechargeable battery device in real time, comprising:
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via respective measuring devices, measuring a current and a voltage of the rechargeable battery in real time; via a processor operatively coupled to memory and to a computer-readable medium encoded with an algorithm for determining the state of the rechargeable battery device in real time, utilizing the measured current and voltage in the algorithm, wherein the algorithm comprises; a first mathematical model based on a direct solution of at least one differential equation characterizing an equivalent RC circuit of the rechargeable battery as a function of time, wherein the first mathematical model is configured to generate a plurality of parameters that are usable to determine the state of the rechargeable battery; and a second mathematical model configured to regress the plurality of parameters over time; and a third mathematical model configured to estimate the state of the rechargeable battery; and via the processor, applying the algorithm to determine the state of the rechargeable battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control system for a vehicle, comprising:
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a module including at least one rechargeable battery; a first device for measuring a magnitude and direction of current flowing through the at least one rechargeable battery; a second device for measuring a voltage of the at least one battery; and a controller operatively associated with the module, the controller including a processor operatively coupled to memory and to a computer-readable medium encoded with an algorithm, the processor configured to execute the algorithm that utilizes measured current and voltage obtained from the first and second devices, respectively, to predict a state of the at least one rechargeable battery, the algorithm comprising; a first mathematical model based on a direct solution of at least one differential equation characterizing an equivalent RC circuit of the at least one rechargeable battery as a function of time, wherein the first mathematical model is configured to generate a plurality of parameters that are usable to predict the state of the at least one rechargeable battery; and a second mathematical model configured to regress the plurality of parameters over time; and a third mathematical model configured to estimate the state of the at least one rechargeable battery. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A computer-readable medium encoded with a computer program that includes computer-readable code for executing an algorithm for determining a state of a rechargeable battery device in real time, the algorithm comprising:
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a first mathematical model based on a direct solution of at least one differential equation characterizing an equivalent RC circuit of the rechargeable battery as a function of time, wherein the first mathematical model is configured to generate a plurality of parameters that are usable to determine the state of the rechargeable battery; and a second mathematical model configured to regress the plurality of parameters over time; and a third mathematical model configured to estimate the state of the rechargeable battery.
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Specification