BATTERY FUEL GAUGE
First Claim
Patent Images
1. A system, comprising:
- a battery;
an analog-to-digital converter coupled to the battery and capable of measuring an output voltage of the battery;
a processor, receiving measured battery output voltages from the analog-to-digital converter;
the processor using a first equivalent circuit model of the battery to estimate battery current when the battery operation is static; and
the processor using a second equivalent circuit model of the battery to estimate battery current when the battery operation is dynamic.
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Abstract
A system includes a battery; an analog-to-digital converter coupled to the battery and capable of measuring an output voltage of the battery; a processor, receiving measured battery output voltages from the analog-to-digital converter; the processor using a first equivalent circuit model of the battery to estimate battery current when the battery operation is static; and the processor using a second equivalent circuit model of the battery to estimate battery current when the battery operation is dynamic.
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Citations
20 Claims
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1. A system, comprising:
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a battery; an analog-to-digital converter coupled to the battery and capable of measuring an output voltage of the battery; a processor, receiving measured battery output voltages from the analog-to-digital converter; the processor using a first equivalent circuit model of the battery to estimate battery current when the battery operation is static; and the processor using a second equivalent circuit model of the battery to estimate battery current when the battery operation is dynamic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An integrated circuit, comprising:
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a processor, configured to receive measured output voltages from a battery; the processor using a first equivalent circuit model of the battery to estimate battery current when the battery operation is static; and the processor using a second equivalent circuit model of the battery to estimate battery current when the battery operation is dynamic.
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15. A method of estimating state of charge of a battery, comprising:
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measuring, by a processor, an output voltage of the battery; estimating, by the processor, during static battery operation, current from the battery using a first equivalent circuit model; estimating, by the processor, during dynamic battery operation, current from the battery using a second equivalent circuit model; and integrating, by the processor, the estimated current to estimate state of charge of the battery. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification