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Measuring circuit and measuring device for battery capacity as well as battery capacity meter

A technology for measuring circuit and battery power, which is applied in the field of battery fuel gauge, measuring device, and battery power measuring circuit, which can solve the problems of low efficiency and inaccurate measurement of remaining battery power, and achieve simple circuit structure, high measurable precision, and low cost effect

Active Publication Date: 2013-01-23
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a battery power measurement circuit, aiming to solve the current problem of inaccurate and low efficiency in measuring the remaining power of the battery

Method used

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  • Measuring circuit and measuring device for battery capacity as well as battery capacity meter
  • Measuring circuit and measuring device for battery capacity as well as battery capacity meter
  • Measuring circuit and measuring device for battery capacity as well as battery capacity meter

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] In the embodiment of the present invention, the remaining power of the battery is measured by integrating the current, so as to improve the measurable accuracy and measurement efficiency.

[0016] figure 1 The structure of the battery power measurement circuit provided by the embodiment of the present invention is shown, and for the convenience of description, only the parts related to the present invention are shown.

[0017] The battery power measuring circuit can be applied to various series of battery fuel gauges to detect various types of batteries.

[0018] As a battery power measure...

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Abstract

The invention is suitable for the electronic measuring field and provides a measuring circuit and a measuring device for battery capacity as well as a battery capacity meter. The measuring circuit is connected with a battery BT to be measured by load resistance RL, wherein the measuring circuit comprises current-measuring resistor RS, a clock unit, an analog-digital conversion unit and an integral unit, wherein the current-measuring resistor RS is used for sampling the current I0 on the load resistor RL and outputting simulative sampling voltage; the clock unit is used for generating time base signals; the analog-digital conversion unit is used for conversing the simulative sampling voltage into digital sampling voltage under the control of the clock signals; and the integral unit is used for accumulating the digital sampling voltage and outputting electricity detection signals. The residual battery capacity of the battery can be measured by the current integration so as to improve the measuring precision and the measuring efficiency; the measuring data can be displayed in real time; users can know the residual battery capacity of the battery in real time; and the circuit is simple in structure and low in cost.

Description

technical field [0001] The invention belongs to the field of electronic measurement, and in particular relates to a battery power measuring circuit, a measuring device and a battery power gauge. Background technique [0002] Currently, measuring the remaining battery capacity is usually achieved by monitoring the open-circuit voltage of the battery, that is, estimating the remaining battery capacity by measuring the battery terminal voltage. However, the relationship between the open circuit voltage and capacity of batteries produced by different manufacturers is not the same, so the calculation method needs to be changed frequently to reduce work efficiency. In addition, only by measuring the open circuit voltage of the battery when it is no-load can a more accurate measurement be obtained. As a result, most applications need to measure the remaining capacity of the battery during operation. At this time, the voltage drop generated by the load current on the internal resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 周明杰邵贤辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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