Battery power measuring method, measuring device and battery-powered equipment
First Claim
1. A method of measuring a battery power, the method comprising:
- a) detecting, by a detection device, a voltage and a temperature at an output terminal of a battery;
b) obtaining, from a storage device coupled to said detection device, a first correction coefficient based on a battery open-circuit voltage at a previous sample time;
c) obtaining, from said storage device, a second correction coefficient based on said battery temperature;
d) calculating, by a calculation device coupled to said detection device and said storage device, a real-time battery open-circuit voltage by using said voltage at said output terminal of said battery, said first and second correction coefficients, said battery open-circuit voltage at said previous sample time, and a time interval between said previous sample time and a present sample time;
e) converting, by a display device coupled to said calculation device, said real-time battery open-circuit voltage into a battery power measurement for display;
f) determining, by a calibration circuit coupled to said detection device and said calculation device, if said battery is in a relaxed state based on a changing rate of said real-time battery open-circuit voltage; and
g) setting, by said calibration circuit, said real-time battery open-circuit voltage to be equal to said voltage at said output terminal of said battery when said battery is in said relaxed state.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein are various battery power measurement devices, methods, and related apparatuses. In one embodiment, a method of measuring a battery power can include: (i) detecting a voltage and a temperature at an output terminal of a battery; (ii) obtaining a first correction coefficient based on a battery open-circuit voltage at a previous sample time; (iii) obtaining a second correction coefficient based on the battery temperature; (iv) calculating a real-time battery open-circuit voltage by using the voltage at the output terminal of the battery, the first and second correction coefficients, the battery open-circuit voltage at the previous sample time, and a time interval between the previous sample time and a present sample time; and (v) converting the real-time battery open-circuit voltage into a battery power measurement for display.
8 Citations
9 Claims
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1. A method of measuring a battery power, the method comprising:
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a) detecting, by a detection device, a voltage and a temperature at an output terminal of a battery; b) obtaining, from a storage device coupled to said detection device, a first correction coefficient based on a battery open-circuit voltage at a previous sample time; c) obtaining, from said storage device, a second correction coefficient based on said battery temperature; d) calculating, by a calculation device coupled to said detection device and said storage device, a real-time battery open-circuit voltage by using said voltage at said output terminal of said battery, said first and second correction coefficients, said battery open-circuit voltage at said previous sample time, and a time interval between said previous sample time and a present sample time; e) converting, by a display device coupled to said calculation device, said real-time battery open-circuit voltage into a battery power measurement for display; f) determining, by a calibration circuit coupled to said detection device and said calculation device, if said battery is in a relaxed state based on a changing rate of said real-time battery open-circuit voltage; and g) setting, by said calibration circuit, said real-time battery open-circuit voltage to be equal to said voltage at said output terminal of said battery when said battery is in said relaxed state. - View Dependent Claims (2, 3, 4)
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5. A battery power measuring device, comprising:
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a) a detection device configured to detect a voltage and a temperature at an output terminal of a battery; b) a storage device coupled to said detection device, wherein said storage device is configured to store a first correction coefficient corresponding to a battery open-circuit voltage at a previous sample time, and a second correction coefficient corresponding to said temperature; c) a calculation device coupled to said detection device and said storage device, wherein said calculation device is configured to calculate a real-time battery open-circuit voltage based on said voltage at said output terminal of said battery, said first and second correction coefficients, said battery open-circuit voltage at said previous sample time, and a time interval between said previous sample time and a present sample time; d) a display device coupled to said calculation device, wherein said display device is configured to convert said real-time battery open-circuit voltage to a battery power measurement for display; and e) a calibration circuit coupled to said detection device and said calculation device, wherein said calibration circuit is configured to determine if said battery is in a relaxed state based on a changing rate of said real-time battery open-circuit voltage, and to set said real-time battery open-circuit voltage to be equal to said voltage at said output terminal of said battery when said battery is in said relaxed state. - View Dependent Claims (6, 7, 8, 9)
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Specification