Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Battery charge state detection method

A technology of battery state of charge and state of charge, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of inaccurate measurement results and large measurement errors, and achieve the effect of simplifying the modeling process and reducing the error.

Active Publication Date: 2009-05-13
SUZHOU ETRON TECH CO LTD
View PDF0 Cites 75 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for detecting the state of charge of a battery, which solves the problems of large measurement errors and inaccurate measurement results in the battery SOC measurement method in the prior art.

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 charge state detection method
  • Battery charge state detection method
  • Battery charge state detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] In order to describe the technical solution of the above-mentioned invention in more detail, the following inventors list specific examples to illustrate the technical effects; it should be emphasized that these examples are used to illustrate the present invention and not limit the scope of the present invention.

[0040] Example Figure 1-5, which is a state of charge detection method for lithium batteries, specifically, is divided into the following steps:

[0041] (1) Measure the open-circuit voltage of the battery in a static state to determine the state of charge value of the battery in a static state; collect the voltage and state of charge values ​​of the battery at different temperatures and the voltage and state of charge values ​​​​under different cycle charge and discharge times The voltage-state-of-charge curve is fitted separately; the initial state-of-charge value of the battery is obtained by collecting data at different temperatures, data at different c...

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 discloses a battery charge state detection method. The method is characterized by normalizing voltage-charge state curves with different temperatures and different cycle charging and discharging times which are stored in a memory chip to obtain a battery charge state value SOC of a battery charging and discharging normalization curve for calibration based on an ampere-hour measurement method. The method has little error, and is applicable to static state of the battery as well as working state of the battery, In addition, correlation curves can be established by a logistic fitting tool, which simplifies the modeling process and facilitates application of the method.

Description

technical field [0001] The invention relates to a charge state detection method of an electrochemical battery, and belongs to the field of battery measurement method design. Background technique [0002] The electronic circuits of notebooks, mobile communication tools, and electric / hybrid vehicles can be powered by batteries, which are generally electrochemical batteries, including lithium batteries, nickel-metal hydride batteries, nickel-cadmium batteries, etc. The circuit can charge the battery so that the rechargeable battery can continue to be used. In this way, the user needs to know the power usage of the battery, so that the user can use it conveniently and decide the charging time. [0003] The state of charge (SOC) of the battery is the state of charge of the battery in the current state, generally a part of the maximum charge of the battery. The SOC of the battery state of charge can reflect the situation of the battery relative to the maximum charge when the bat...

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
IPC IPC(8): G01R31/36
Inventor 丁屹李乐庆唐玲
Owner SUZHOU ETRON TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com