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

Method for online reconstruction of internal three-dimensional temperature field of lithium ion battery

A lithium-ion battery, three-dimensional temperature technology, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve the problem of insufficient resolution of temperature distribution, achieve fast calculation speed, improve accuracy and robustness, and realize self-organization Effect

Pending Publication Date: 2022-05-31
CHONGQING UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current real-time correction method for the internal temperature of the battery is only suitable for the estimation of the average internal temperature of the battery, and the resolution of the temperature distribution is slightly insufficient.

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
  • Method for online reconstruction of internal three-dimensional temperature field of lithium ion battery
  • Method for online reconstruction of internal three-dimensional temperature field of lithium ion battery
  • Method for online reconstruction of internal three-dimensional temperature field of lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0102] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0103] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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 a method for online reconstruction of an internal three-dimensional temperature field of a lithium ion battery, and belongs to the technical field of batteries, and the method comprises the following steps: S1, carrying out the online identification of the internal average internal resistance of the battery according to the input voltage and current of the battery; s2, estimating the SOC at the current moment by using the input current and voltage of the battery; s3, estimating the average temperature of the battery core based on the internal resistance and SOC estimation results in S1 and S2; and S4, determining a basic reconstruction function of the three-dimensional temperature field in the battery by taking the surface test temperature of the battery and the average temperature of the battery estimated in the S3 as input, and completing reconstruction of the three-dimensional temperature field in the battery. The method has the advantages that the precision is high, the robustness is good, and the related algorithm occupies few computing resources.

Description

technical field [0001] The invention belongs to the technical field of batteries, and relates to a method for online reconstruction of an internal three-dimensional temperature field of a lithium-ion battery. Background technique [0002] Lithium-ion power batteries are currently widely used in electrified transportation. As the main power source of electric vehicles, lithium-ion batteries have a long service life and high energy density. In recent years, in order to meet the needs of the cruising range of electric vehicles, the energy density of lithium-ion power batteries is increasing year by year. However, the increased energy density makes the temperature rise of the battery during use increasingly obvious, and also makes the thermal safety of the battery increasingly prominent. For large lithium-ion batteries, the process of temperature rise is accompanied by the accumulation of heat inside. After high-rate discharge, the difference between the internal temperature of...

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): G01R31/382
CPCG01R31/382Y02E60/10
Inventor 谢翌李伟胡晓松张扬军陈斌钱煜平
Owner CHONGQING 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