Online safety pre-warning method for lithium-ion battery

A lithium-ion battery, safety warning technology, applied in secondary battery charging/discharging, secondary battery repair/maintenance, electricity measurement, etc. Prevent battery safety accidents and other issues to achieve the effect of preventing safety accidents, accurate and efficient early warning, and simple and easy methods

Active Publication Date: 2016-07-06
STATE GRID CORP OF CHINA +2
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods reduce the risk of using lithium-ion batteries to a certain extent, but because battery safety accidents are usually from the inside out, that is, problems occur inside the battery, causing thermal runaway of the battery, and the current safety measures are not very good. Reflectin

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
  • Online safety pre-warning method for lithium-ion battery
  • Online safety pre-warning method for lithium-ion battery

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1:

[0038] Such as Figure 1-2 As shown, the invention of this example provides an online safety warning method for lithium-ion batteries. During the operation of the lithium-ion battery, the voltage, current, and temperature of the battery are mainly collected. The temperature measures the surface temperature of the battery and cannot accurately reflect the internal condition of the battery. The voltage of the battery has two situations, one is the voltage of the battery in the resting state, and the other is the voltage and its change in the operation of the battery. The voltage in the resting state can provide very little information, but the voltage during the operation Voltage and its change can provide more information, which can simultaneously reflect the battery's capacity and internal resistance. In a certain period of time, the voltage change value of the lithium-ion battery changes with the current or power loaded on the battery, and as the capacity o...

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 an online safety pre-warning method for a lithium-ion battery. The method comprises the following steps: determining an impact condition of the lithium-ion battery; determining a voltage change threshold of the battery; and carrying out online safety pre-warning of the battery. According to the method, the single battery with a potential safety hazard can be separated out by intercepting a voltage change value of the lithium-ion battery under a current or power impact condition within a certain period and carrying out transverse and longitudinal comparison on the numerical value, so that online safety pre-warning of the lithium-ion battery is achieved. Transverse comparison is carried out between different single batteries; and longitudinal comparison is numerical value comparison of various single batteries between different running time nodes.

Description

Technical field: [0001] The invention relates to an online safety warning method for a battery, and more particularly relates to an online safety warning method for a lithium ion battery. Background technique: [0002] Clean renewable energy such as wind energy and solar energy has been widely used, but due to its intermittent and discontinuous nature, energy storage technology is needed to improve the continuity and stability of energy supply. Lithium-ion batteries have shown great application potential in the field of energy storage due to their advantages such as high energy density, good power characteristics, long cycle life, good environmental adaptability, and no memory effect. But lithium-ion batteries are an energy carrier after all. During use, due to improper use (overcharge, overdischarge, short circuit, etc.) or harsh use conditions (high temperature, low temperature, high current, high power), the battery may be damaged. The thermal runaway of lithium-ion batt...

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): H01M10/42H01M10/44G01R31/36
CPCY02E60/10
Inventor 刘家亮范茂松官亦标王绥军傅凯金翼
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap