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

Availability evaluation method on retired dynamic lithium battery

An evaluation method, lithium battery technology, applied in secondary battery repair/maintenance, measurement of electricity, measurement of electrical variables, etc., can solve the problems of low sorting efficiency, lengthy and complicated sorting process, heavy workload, etc., and achieve evaluation The result is scientific and reliable, the efficiency of sorting is improved, and the effect of less measurement parameters

Active Publication Date: 2015-02-04
STATE GRID CORP OF CHINA +2
View PDF6 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the above sorting methods for cascade utilization of decommissioned batteries require a series of complicated steps to screen out batteries that can be used in cascade use. However, the number of decommissioned power batteries in the future is very large, and the sorting process based on the method of the above invention patent is lengthy and complicated. Large, low sorting efficiency

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
  • Availability evaluation method on retired dynamic lithium battery
  • Availability evaluation method on retired dynamic lithium battery
  • Availability evaluation method on retired dynamic lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for evaluating the usability of a decommissioned power single lithium battery, comprising the steps of:

[0026](1) The decommissioned battery is a square soft-packed lithium iron phosphate power battery produced by a company and decommissioned from an electric bus. The cell has a nominal capacity of 20Ah, a platform voltage of 3.2V, and a charging and discharging range of 2.80~3.65V. The battery matching method is as follows: first, 10 square soft-packed lithium iron phosphate cells are connected in parallel to form a 200Ah battery module, and then a 400Ah / 576V lithium iron phosphate power battery pack is composed of 2 parallel 180 series, which is coordinated with a three-phase asynchronous motor drive system. The vehicle provides power. These batteries have been running for 3 years since they were put into operation in 2010, with a running mileage of 140,000 km. The battery pack operates entirely in charging mode. In this embodiment, a total of 320 200Ah ...

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

PropertyMeasurementUnit
Resistanceaaaaaaaaaa
Resistanceaaaaaaaaaa
Login to View More

Abstract

The invention relates to an availability evaluation method on retired dynamic lithium battery. The method comprises the following steps: establishing core parameters for judging the availability of a retired dynamic single lithium battery; establishing the core parameter criteria of the retired dynamic single lithium battery; and establishing the proportion of the core parameter criteria of the retired dynamic single lithium battery; wherein the core parameters comprise residual battery capacity, safety, and cycle performance, the core parameter criteria comprise battery state of health (SOH), battery internal resistance, diaphragm penetration strength decreasing rate, diaphragm porosity, and secondary cycle life, and the diaphragm penetration strength decreasing rate and diaphragm porosity can be used to measure the diaphragm performance. The evaluation method has the advantages of less measurement parameters, simple and high efficient measuring method, and scientific and reliable evaluation result, and is capable of greatly improving the efficiency of screening on retired dynamic lithium batteries.

Description

technical field [0001] The invention belongs to the technical field of storage batteries, and in particular relates to a method for evaluating the usability of decommissioned power single lithium batteries. Background technique [0002] Electric vehicles have high requirements on the performance of the power battery. When the capacity of the power battery drops to a certain level, in order to ensure the power performance, driving range and safety performance of the electric vehicle, it must be replaced. The battery replaced from the electric vehicle still has a high residual capacity. Lithium-ion batteries have the advantages of high specific energy, good high-temperature characteristics, and long cycle life. After being decommissioned as electric vehicle power batteries, they may be used in relatively good working conditions and relatively low requirements for battery performance after screening and regrouping. In some cases, the cascade utilization of power batteries can ...

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): H01M10/42
CPCG01R31/385G01R31/392
Inventor 赵光金吴文龙
Owner STATE GRID CORP OF CHINA
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