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

State of charge (SOS) detection method of vanadium battery management system

A technology of management system and detection method, applied in the field of vanadium battery, can solve the problem of large measurement error, and achieve the effect of simplifying software design and simple process method

Active Publication Date: 2013-06-12
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to make up for the shortcomings of the existing vanadium battery management system for detecting SOC, the purpose of the present invention is to provide a more reliable SOC detection method for the vanadium battery management system, to solve the problems of the prior art that the measurement error will become larger and larger with the use of the battery

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
  • State of charge (SOS) detection method of vanadium battery management system
  • State of charge (SOS) detection method of vanadium battery management system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] If the battery pack is fully charged, the detection value of the open circuit voltage of the single vanadium battery is 1500mV; when the battery pack is fully discharged, the detection value of the open circuit voltage of the single vanadium battery is 1100mV.

[0034]The SOC corresponding to the independent vanadium battery monolithic open circuit voltage detection value of 1500mV is 100%; the independent vanadium battery monolithic open circuit voltage detection value of 1100mV corresponds to the SOC of 0%; the current measured vanadium battery monolithic open circuit voltage is 1200mV, but:

[0035] SOC=(U r -U dt ) / (U ct -U dt )×100%=(1200-1100) / (1500-1100)×100%=25%

[0036] The results of the examples show that the SOC detection method is simple and convenient for the electric quantity detection of the vanadium battery management system. In order to make up for the deficiency of SOC detection by the existing vanadium battery management system, the present inve...

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 relates to the field of vanadium batteries, in particular to a state of charge (SOS) detection method of a vanadium battery management system. The SOS detection method of the vanadium battery management system aims at electronic quantity detection of the vanadium battery management system, is simple and convenient to use, and resolves the problem that measuring errors are more and more with the use of batteries in the prior art. In order to overcome the defects of the SOS detection in an existing vanadium battery management system, the SOS detection method of the vanadium battery management system calculates the SOS in real time by detecting open-circuit voltage of independent vanadium battery single pieces. The vanadium battery management system monitors the SOS of a vanadium battery pack in real time, and communicates an SOS value to an energy storage inverter and an automatic generation control (AGC) system. The AGC system carries out controlling according to power requirements of a power grid, wind electricity current actual power and the real-time SOS value of the vanadium battery, ensures that the working state of the vanadium battery is adjusted timely and controlled automatically, then the energy storage inverter is dispatched to charge and discharge the vanadium battery, and therefore the power of power grid synchronization is guaranteed to be smooth, and the optimum working state of an energy storage power station is achieved.

Description

technical field [0001] The invention relates to the field of vanadium batteries, in particular to an SOC detection method of a vanadium battery management system. Background technique [0002] In the past, the battery SOC (State Of Charge) detection methods mainly include battery voltage monitoring method and potential detection method. [0003] The battery voltage detection method uses the functional relationship between the battery voltage and SOC (where: U is the battery voltage, unit: V; solution concentration 1mol / L): [0004] SOC=Exp[(U-1.26) / 0.1184] / {1+Exp[(U-1.26) / 0.1184]}. [0005] The advantage of this method is that the monitoring instrument is simple, the operation is simple and the feasibility is good. Its limitations are: this method cannot be carried out during the charging and discharging process of the battery, and the measurement error will become larger and larger as the battery is used, because the corresponding relationship between the battery voltage ...

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): H02J7/00G01R31/36
Inventor 陈晖冯兴梅刘欣程佳刘建国严川伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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