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

Low-temperature charging method for lithium ion battery

A technology of lithium-ion battery and charging method, which is applied in the direction of secondary battery charging/discharging, secondary battery, secondary battery repair/maintenance, etc., and can solve the problems of high safety risk and low charging capacity, etc.

Active Publication Date: 2021-05-18
TSINGHUA UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to solve the problem of low chargeable capacity and high safety risk when charging the battery in a cold environment

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
  • Low-temperature charging method for lithium ion battery
  • Low-temperature charging method for lithium ion battery
  • Low-temperature charging method for lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0038] It can be understood that the terms "first", "second" and the like used in this application may be used to describe various elements herein, but these elements are not limited by these terms. These terms are only used to distinguish a f...

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 low-temperature charging method for a lithium ion battery. The method comprises the following steps: providing a three-electrode battery with a reference electrode; according to initial state parameters of the three-electrode battery, setting initial pulse current parameters, carrying out pulse charging on the three-electrode battery according to the initial pulse current parameters, the state parameters comprising at least one of the battery SOC state, the battery temperature and the battery SOH state, the pulse current parameters comprising a pulse waveform, a pulse period, a positive pulse amplitude, a negative pulse amplitude, a positive pulse duration and a negative pulse duration; and finally, in the charging process, monitoring the cathode potential and the battery voltage of the three-electrode battery in real time, and adjusting pulse current parameters according to the cathode potential and the battery voltage. According to the method, in the charging process, pulse current parameters are adjusted through the negative electrode potential and the battery voltage, so that the battery can exert the maximum charging capacity within the safety range without lithium precipitation side reaction, and safe and rapid charging of the battery is achieved.

Description

technical field [0001] The present application relates to the technical field of battery management, in particular to a low-temperature charging method for a lithium-ion battery. Background technique [0002] In recent years, with the increasing global warming, shortage of oil resources, and energy security issues, the transformation of vehicle energy systems to meet the global low-carbon development goals is accelerating. With the continuous advancement of vehicle power battery technology, new energy vehicles represented by pure electric vehicles have become the main force of vehicle transformation. Due to the advantages of high energy density, high power density, long life, and environmental protection, lithium-ion batteries have been widely used in electronic devices such as computers and mobile phones and power battery systems for new energy vehicles in recent years. [0003] At present, the application of lithium-ion batteries in low-temperature scenarios still faces h...

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): H01M10/44H01M10/48
CPCH01M10/446H01M10/48Y02E60/10
Inventor 秦宇迪卢宇芳卢兰光杜玖玉左鹏钰欧阳明高
Owner 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