Method and system for estimating battery percentage
First Claim
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1. A method for estimating a battery percentage, the method comprising the steps of:
- obtaining a coulomb counter calculated battery index (CCBI), which relates to an accumulated amount of current flowing out of a battery;
obtaining a battery voltage curve tracer calculated battery index (VCBI), which relates to a temperature, an output voltage of the battery, and a current flowing out of the battery; and
generating a modified calculated battery index (MCBI), using a processing unit, according to the CCBI and the VCBI, wherein the MCBI relates to a difference between the CCBI and the VCBI and ranges between the CCBI and the VCBI;
wherein the MCBI is substantially equal to the CCBI minus a compensation value, and the compensation value relates to a difference between the CCBI and the VCBI.
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Abstract
A method and a system for estimating a battery percentage are provided. The method includes the following steps. A coulomb counter calculated battery index (CCBI) relating to an accumulated amount of current flowing out of a battery is obtained. A battery voltage curve tracer calculated battery index (VCBI) relating to a temperature, an output voltage of the battery, and a current flowing out of the battery is obtained. A modified calculated battery index (MCBI) ranging between the CCBI and the VCBI is generated according to the CCBI and the VCBI.
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Citations
16 Claims
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1. A method for estimating a battery percentage, the method comprising the steps of:
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obtaining a coulomb counter calculated battery index (CCBI), which relates to an accumulated amount of current flowing out of a battery; obtaining a battery voltage curve tracer calculated battery index (VCBI), which relates to a temperature, an output voltage of the battery, and a current flowing out of the battery; and generating a modified calculated battery index (MCBI), using a processing unit, according to the CCBI and the VCBI, wherein the MCBI relates to a difference between the CCBI and the VCBI and ranges between the CCBI and the VCBI; wherein the MCBI is substantially equal to the CCBI minus a compensation value, and the compensation value relates to a difference between the CCBI and the VCBI. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for estimating a battery percentage, the method comprising the steps of:
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obtaining a coulomb counter calculated battery index (CCBI), which relates to an accumulated amount of current flowing out of a battery; obtaining a battery voltage curve tracer calculated battery index (VCBI), which relates to a temperature, an output voltage of the battery, and a current flowing out of the battery; and generating a modified calculated battery index (MCBI), using a processing unit, according to the CCBI and the VCBI, wherein the MCBI relates to a difference between the CCBI and the VCBI and ranges between the CCBI and the VCBI; wherein the MCBI is substantially equal to the VCBI minus a compensation value, and the compensation value relates to a difference between the CCBI and the VCBI.
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9. A system for estimating a battery percentage, the system comprising:
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a coulomb counter calculated battery index (CCBI) generator for generating a CCBI, which relates to an accumulated amount of current flowing out of a battery; a battery voltage curve tracer calculated battery index (VCBI) generator for generating a VCBI, which relates to a temperature, an output voltage of the battery, and a current flowing out of the battery; and an adjusting device for generating a modified calculated battery index (MCBI) according to the CCBI and the VCBI, wherein the MCBI relates to a difference between the CCBI and the VCBI and ranges between the CCBI and the VCBI; wherein the MCBI is substantially equal to the CCBI minus a compensation value, and the compensation value relates to a difference between the CCBI and the VCBI. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A system for estimating a battery percentage, the system comprising:
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a coulomb counter calculated battery index (CCBI) generator for generating a CCBI, which relates to an accumulated amount of current flowing out of a battery; a battery voltage curve tracer calculated battery index (VCBI) generator for generating a VCBI, which relates to a temperature, an output voltage of the battery, and a current flowing out of the battery; and an adjusting device for generating a modified calculated battery index (MCBI) according to the CCBI and the VCBI, wherein the MCBI relates to a difference between the CCBI and the VCBI and ranges between the CCBI and the VCBI; wherein the MCBI is substantially equal to the VCBI minus a compensation value, and the compensation value relates to a difference between the CCBI and the VCBI.
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Specification