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

A rapid evaluation method for decommissioned power batteries

A power battery, fast technology, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve the difficult and difficult problems of evaluating the state of decommissioned power batteries, and achieve the effects of improving efficiency, simplifying switching time, and ensuring accuracy

Active Publication Date: 2020-06-02
SICHUAN ENERGY INTERNET RES INST TSINGHUA UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For decommissioned power batteries, the working conditions before decommissioning vary widely, so it is difficult to use a unified battery model and state estimation algorithm to evaluate the state of decommissioned power batteries

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
  • A rapid evaluation method for decommissioned power batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown in Fig. 1, an assembly line test bench is set up for the measurement of decommissioned battery packs, and the actual capacity, voltage consistency, power and internal resistance are measured on different work benches, and the self-discharge rate parameters are evaluated. Set workbench 1, workbench 2, static storage area, and workbench 3 in sequence. Workbench 1 is equipped with a set of power supply and load equipment, the purpose of which is to complete the battery capacity test through charging and discharging; workbench 2 is equipped with power and internal resistance test equipment, the purpose is to complete the battery in the case of low remaining power (SOC). Discharge capacity test; workbench 3 is equipped with a separate load device, the purpose is to complete the self-discharge of the battery after standing for a week.

[00...

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 technical field of battery evaluation, and discloses a rapid evaluation method for a retired power battery. The method comprises the steps that 1 a retired battery pack is placed on a test platform, and a charging and discharging device is used to measure the capacity of the retired battery pack; 2 power and the internal resistance are measured when the remaining power of the retired battery pack is 20%; 3 the retired battery pack is fully charged and stands for 1 week; and 4 the self-discharge rate of the retired battery pack is measured. The test time of the retired power battery is reduced from 1 to 2 months to approximately 1 week; the test switching time of evaluation parameters is significantly simplified; the state evaluation efficiency of the retired battery pack is greatly improved; and the acquired state evaluation parameters of the retired battery are greatly accurate.

Description

technical field [0001] The invention relates to the technical field of battery evaluation, in particular to a rapid evaluation method for decommissioned power batteries. Background technique [0002] When the battery has been used for a period of time and the capacity of the battery is less than 80% of the rated capacity of the battery when it is fully charged, the battery should be replaced. Therefore, for the decommissioned battery pack, it is first necessary to determine its actual capacity after decommissioning. With the attenuation of battery capacity, compared with new batteries, the internal resistance of retired battery packs generally increases, the discharge power of batteries will also change, and the consistency of batteries and battery charge retention will deteriorate. [0003] Therefore, the status evaluation of retired battery packs needs to integrate capacity, internal resistance, power, self-discharge rate, and battery consistency to obtain a comprehensive...

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 Patents(China)
IPC IPC(8): G01R31/389G01R31/392
CPCG01R31/389G01R31/392
Inventor 肖伟陈家良康权舒小农李澌翰何岸金晨宁
Owner SICHUAN ENERGY INTERNET RES INST TSINGHUA UNIV
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