Lithium ion battery thermal runway prediction method in mobile phone operating

A technology of lithium ion battery and prediction method is applied in the field of thermal runaway prediction of lithium ion battery when mobile phone is running, and can solve problems such as explosion, fire, and temperature rise of lithium ion battery.

Inactive Publication Date: 2017-04-26
SHANGHAI ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF P R C
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  • Abstract
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  • Application Information

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Problems solved by technology

A large number of exothermic chemical reactions can cause the temperature of lithium-ion batteries to rise rapidly, and even catch fire and explode

Method used

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  • Lithium ion battery thermal runway prediction method in mobile phone operating
  • Lithium ion battery thermal runway prediction method in mobile phone operating
  • Lithium ion battery thermal runway prediction method in mobile phone operating

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Embodiment Construction

[0063] The present invention is described in detail with reference to the drawings and specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make some adjustments and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0064] Such as figure 1 As shown, the lithium-ion battery thermal runaway prediction method during mobile phone operation of the present invention comprises the following steps:

[0065] Step 1: Establish a geometric physical model of the mobile phone including the lithium-ion battery, divide the finite element mesh of the geometric model, and define the material properties of each component in the mobile phone. The geometric physical model of the mobile phone should accurately describe the size ...

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Abstract

The invention discloses a lithium ion battery thermal runway prediction method in mobile phone operating. The lithium ion battery thermal runway prediction method comprises the steps of establishing a geometrical physical model comprising a mobile phone with the lithium ion battery, and dividing finite element grids, and endowing material attribute of each constitute part in the mobile phone; establishing a lithium ion battery charging-discharging mathematical physical model, a lithium ion battery internal chemical reaction heat-producing mathematical model and a mobile phone heat transfer model; performing simulation on a lithium ion battery charging-discharging process and a lithium ion battery internal chemical reaction process in the mobile phone operating by adopting a finite element method; performing simulation on a mobile phone heat production process when heat, produced by the mobile phone internal components, the lithium ion battery charging-discharging process and the lithium ion battery internal chemical reaction process, is adopted as a heat source; and predicting a lithium ion battery thermal runway process. By virtue of the prediction method, the mobile phone heat transfer and lithium ion battery thermal runway are linked together in the mobile phone operating, so that the rapid lithium ion battery thermal runway prediction method in the mobile phone operating is provided.

Description

technical field [0001] The invention relates to a prediction technology for thermal runaway of lithium ion batteries, in particular to a method for predicting thermal runaway of lithium ion batteries when a mobile phone is running. Background technique [0002] Lithium-ion battery has been widely used in mobile phones, which is convenient for people's daily life, but its safety performance has attracted more and more attention. Most of the currently commercialized lithium-ion batteries use flammable organic electrolytes, which are potentially dangerous, such as: flammability, flammability, and explosiveness. Common mobile phone structures such as figure 2 As shown, in the design or manufacture, if there are some potential structural defects, it may cause serious safety accidents, and even a small mobile phone battery may cause fire or even explode. In addition to the factors of the lithium-ion battery itself, if the structural design and material selection of the mobile ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/08
Inventor 段冀渊严波杨荣静缪文彬李计融张琳王涛
Owner SHANGHAI ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF P R C
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