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

Off-line lithium battery remaining capacity estimation method

A technology of remaining power and lithium batteries, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve the problems of kernel function uncertainty and may not be able to obtain the best results, etc.

Inactive Publication Date: 2019-11-26
NAT UNIV OF DEFENSE TECH
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] (1) Different kernel functions have different characteristics. At present, there is no clear regulation on how to choose a kernel function in academia. Therefore, the kernel function selected based on experience has great uncertainty and may not be able to obtain the best results.

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
  • Off-line lithium battery remaining capacity estimation method
  • Off-line lithium battery remaining capacity estimation method
  • Off-line lithium battery remaining capacity estimation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0076] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0077] refer to figure 1 , the present invention provides a method for estimating the remaining power of an off-line lithium battery, comprising the following steps:

[0078] The first step is lithium battery data collection.

[0079] Extract the battery status monitoring parameters of each charging and discharging cycle when the lithium battery is working in the offline state in seconds, and obtain and calculate the remaining power of each charging and discharging cycle as the real value of the remaining power corresponding to each group of battery status monitoring parameters. The battery status monitoring parameters and the corresponding real value of the remaining power constitute the lithium battery data set.

[0080] The battery status monitoring parameters include constant current charging time, constant voltage charging time...

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 belongs to the field of life prediction, and particularly relates to an off-line lithium battery remaining capacity estimation method. The method comprises the steps of collecting lithium battery state monitoring parameters, and constructing a training set, a verification set and a test set; constructing a heterogeneous kernel function, solving heterogeneous kernel coefficients and hyper-parameters of the heterogeneous kernel function, and training a lithium battery remaining capacity estimation model; verifying the precision of the lithium battery remaining capacity estimation model obtained by training through error analysis; inputting the acquired battery state monitoring parameters of the lithium battery to be measured in each charging and discharging cycle during workinginto the lithium battery remaining capacity estimation model obtained by training so as to estimate the remaining capacity. According to the method, the problem that it is difficult to accurately estimate the remaining capacity in an off-line state is well solved, and a better scheme is provided for the research on the aspects of on-line remaining capacity estimation, service life estimation andanomaly detection of lithium battery products.

Description

technical field [0001] The invention belongs to the field of product life estimation, and in particular relates to a method for estimating the remaining battery power through lithium battery state monitoring parameters. Background technique [0002] Product life estimation refers to the time estimation for a certain product equipment from now until it is completely unusable or unable to complete its specified functions. By estimating the life of the product, the equipment can be repaired and maintained in a timely and necessary manner, the service life of the product can be improved and the occurrence of major safety accidents can be avoided. The remaining power of lithium batteries degrades continuously during use, which is also a key intermediate parameter for calculating general health indicators (SOC, SOH). Therefore, in the field of lithium battery remaining life prediction, the remaining power of lithium battery can also be used to evaluate the battery degradation sta...

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): G01R31/382G06N3/12
CPCG06N3/126G01R31/382
Inventor 程志君罗玉文彭诚郭波姚航肖北
Owner NAT UNIV OF DEFENSE TECH
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