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Battery electric quantity indication setting method and circuit

A battery power and setting method technology, which is applied in the direction of testing the dielectric strength, can solve the problem of low accuracy of the battery power display setting method, and achieve the effects of avoiding inaccurate determination results, improving sampling accuracy, and reducing design costs

Active Publication Date: 2015-11-04
JOULWATT TECH INC LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of low accuracy of the existing battery power display setting method, the present invention provides a battery power display setting method and a setting circuit with high battery power display accuracy and low cost

Method used

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  • Battery electric quantity indication setting method and circuit
  • Battery electric quantity indication setting method and circuit
  • Battery electric quantity indication setting method and circuit

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Embodiment Construction

[0038] Such as figure 1 As shown, the battery power display setting method provided in this embodiment includes:

[0039] Step S1, obtain the open circuit voltage V of the battery representing the current battery power BAT(OCV) . The open circuit voltage of this example V BAT(OCV) is the open circuit voltage of the battery in working condition. Open circuit voltage V BAT(OCV) There is a one-to-one correspondence relationship with the battery power Q, which can be obtained through actual measurement.

[0040] When the battery is in working condition, the open circuit voltage V of the battery BAT(OCV) It cannot be obtained directly, what can be directly obtained is the working voltage V of the battery BAT . When the battery is in the charging state, according to the flow direction of the current, the working voltage V BAT equal to the open circuit voltage V BAT(OCV) Add the voltage drop across the internal resistance of the battery as the charging current. And when the...

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Abstract

The invention provides a battery electric quantity indication setting method and circuit. The setting method includes acquiring open circuit voltage of a battery used for indicating current electric quantity of the battery; acquiring current battery electric quantity level and outputting a display signal through comparing the acquired open circuit voltage with at least two predetermined battery voltage comparison reference values; and displaying current battery electric quantity level according to the display signal.

Description

technical field [0001] The invention relates to the field of battery power detection, and in particular to a battery power display setting method and a setting circuit. Background technique [0002] At present, with the rapid development of electrical equipment, users not only put forward high requirements for the function, reliability and operability of the equipment. For electrical equipment containing batteries, in order to ensure the reliable operation of the equipment, users need to know the battery usage time accurately, charge or replace the batteries in time, so the accurate display of the current battery power will become the design index that users focus on. [0003] At present, the display control of the battery power is mainly realized through the following two methods. The first one is realized by a separate MCU. This display control mode requires a lot of peripheral components for a separate MCU, which not only requires high design costs but also occupies a la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 徐爱民窦训金张安羊黄必亮任远程周逊伟
Owner JOULWATT TECH INC LTD
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