Estimation Method for Residual Discharging Time of Batteries
First Claim
1. An estimation method for a residual discharging time of batteries, comprising the steps of:
- A. setting a plurality of battery-discharge-current intervals and battery-discharge equations thereof, each of the battery-discharge equation corresponding to the associated battery-discharge-current interval, further setting discharge time of each of the battery-discharge-current intervals zero;
B. detecting a discharge current, a discharge time and a discharge voltage of the batteries;
C. judging whether the discharge current exceeding all of the battery-discharge-current intervals, terminating the whole procedure if the discharge current exceeding all of the battery-discharge-current intervals;
D. selecting one of the battery-discharge equations corresponding to the associated battery-discharge-current interval according to the detected discharge current;
E. calculating the residual discharging time of the batteries;
F. accumulating and recording the discharge time of the associated battery-discharge-current interval corresponding to the selected battery-discharge equation;
G judging whether the discharge voltage being lower than a predetermined value, and returning to the step B if the discharge voltage is higher than the predetermined value;
H. calculating an estimation error of the residual discharging time when the discharge voltage is lower than a predetermined value;
I. judging whether the estimation error being greater than a predetermined error value, and terminating the whole procedure if the estimation error is lower than the predetermined error value;
J. adjusting parameters of the selected battery-discharge equation if the estimation error is greater than the predetermined error value.
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Abstract
An estimation method for residual discharging time of batteries includes the steps of: providing a set of battery-discharge-current intervals and a set of battery-discharge equations, setting discharge time of each battery-discharge-current intervals zero; detecting a discharge current, voltage and time of batteries; judging whether the discharge current exceeding all of the battery-discharge-current intervals; selecting one of the battery-discharge-current intervals and the associated battery-discharge equation according to the detected discharge current; calculating an estimation of residual discharging time; accumulating and recording the discharge time; judging whether the discharge voltage being lower than a predetermined value and calculating an estimation error of the residual discharging time; adjusting parameters of the battery-discharge equation for reducing the estimation error of the residual discharging time if the estimation error is greater than a predetermined error value.
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Citations
6 Claims
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1. An estimation method for a residual discharging time of batteries, comprising the steps of:
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A. setting a plurality of battery-discharge-current intervals and battery-discharge equations thereof, each of the battery-discharge equation corresponding to the associated battery-discharge-current interval, further setting discharge time of each of the battery-discharge-current intervals zero; B. detecting a discharge current, a discharge time and a discharge voltage of the batteries; C. judging whether the discharge current exceeding all of the battery-discharge-current intervals, terminating the whole procedure if the discharge current exceeding all of the battery-discharge-current intervals; D. selecting one of the battery-discharge equations corresponding to the associated battery-discharge-current interval according to the detected discharge current; E. calculating the residual discharging time of the batteries; F. accumulating and recording the discharge time of the associated battery-discharge-current interval corresponding to the selected battery-discharge equation; G judging whether the discharge voltage being lower than a predetermined value, and returning to the step B if the discharge voltage is higher than the predetermined value; H. calculating an estimation error of the residual discharging time when the discharge voltage is lower than a predetermined value; I. judging whether the estimation error being greater than a predetermined error value, and terminating the whole procedure if the estimation error is lower than the predetermined error value; J. adjusting parameters of the selected battery-discharge equation if the estimation error is greater than the predetermined error value. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification