Charging/discharging electrical energy indication apparatus and electrical energy calculation method for use in the apparatus
First Claim
1. A charging/discharging electrical energy indication apparatus comprised a converter, a controller and a display, and electrically connected to the charging/discharging loop of a battery for indicating the electrical charging/discharging power of the battery, wherein said controller obtains end voltages of said battery and current value of said charging/discharging loop within a sampling cycle to calculate the electrical power value, and drives said display to display the sum of electrical energy value continuously accumulated within said sampling cycle.
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Abstract
A charging/discharging electrical energy indication apparatus and electrical energy calculation method in which charging/discharging current and end voltage of the battery are sampled at a fixed cycle, and then the electrical energy value of every charging/discharging sampling is calculated subject to W=(P0+P1)T/2, and then the charging/discharging electrical energy of the battery is continuously added or deducted, and displayed by digits.
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Citations
10 Claims
- 1. A charging/discharging electrical energy indication apparatus comprised a converter, a controller and a display, and electrically connected to the charging/discharging loop of a battery for indicating the electrical charging/discharging power of the battery, wherein said controller obtains end voltages of said battery and current value of said charging/discharging loop within a sampling cycle to calculate the electrical power value, and drives said display to display the sum of electrical energy value continuously accumulated within said sampling cycle.
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9. An electrical energy calculation method used to calculate the electrical power value of a battery in a charging/discharging loop, the method comprising the steps of:
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(a) sampling the end voltage value of said battery and the current value of said charging/discharging loop within a sampling cycle;
(b) calculating the average electrical power value obtained during said sampling cycle; and
(c) accumulating the electrical energy value, which is the product of said sampling cycle by said average electrical power value. - View Dependent Claims (10)
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Specification