Battery power display control method and battery power display control circuit

A technology for displaying control methods and battery power, applied in the direction of measuring electric variables, measuring electricity, measuring devices, etc., can solve the problem that the battery power control method is difficult to meet the cost and accuracy at the same time, to eliminate voltage drop, ensure normal operation, improve The effect of detection accuracy

Active Publication Date: 2015-11-18
JOULWATT TECH ZHANGJIAGANG INC LTD
View PDF7 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the difficulty of meeting the requirements of both cost and precision in existing battery power control methods, the present invention provides a battery power display control method and control circuit with high display accuracy and low circuit cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Battery power display control method and battery power display control circuit
  • Battery power display control method and battery power display control circuit
  • Battery power display control method and battery power display control circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In actual use, it is the open circuit voltage V of the battery that can accurately characterize the current battery capacity Q BAT(OCV) , open circuit voltage V BAT(OCV) There is a one-to-one correspondence relationship with the battery power Q, and the relationship between the two can be obtained through actual measurement. However, when the battery is in working condition, due to the internal resistance Rs of the battery, 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 . image 3 Among them, Rs represents the equivalent internal resistance of the battery, not the actual external resistance. By analyzing the charging and discharging state of the battery, it can be known that when the battery is in the charging state, the working voltage V BAT equal to the open circuit voltage V BAT(OCV) and the sum of the voltage drop Vs generated on the internal resistance...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a battery power display control method and a battery power display control circuit. The control method comprises the steps of acquiring the working voltage under the condition of battery charge and discharge, acquiring the average charge and discharge current under the condition of battery charge and discharge, acquiring the voltage drop generated by the average charge and discharge current on a compensation resistor to form a compensation voltage, superposing the compensation voltage and the working voltage to obtain an open-circuit voltage representing the current battery power, comparing the open-circuit voltage with at least two preset voltage benchmarks to obtain the current level of battery power and form a display signal, and displaying the current level of battery power 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 control method and a control 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 method requires more peripheral components, which not only requires high design cost but also occupies a large volume. In order ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 窦训金徐爱民张安羊任远程黄必亮周逊伟
Owner JOULWATT TECH ZHANGJIAGANG INC LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap