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Lithium ion battery thermal runaway product collection and test method

A technology of lithium ion battery and testing method, which is applied in the field of collection and testing of thermal runaway products of lithium ion batteries, and can solve problems such as thermal runaway

Inactive Publication Date: 2019-01-25
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under different use environments, especially under high temperature and other heat abuse conditions, lithium-ion batteries will experience thermal runaway due to their structure and material characteristics, and release smoke and dust composed of gas products and solid products.
There are currently no dedicated systems and equipment for this study

Method used

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  • Lithium ion battery thermal runaway product collection and test method
  • Lithium ion battery thermal runaway product collection and test method
  • Lithium ion battery thermal runaway product collection and test method

Examples

Experimental program
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Effect test

Embodiment 1

[0065] Samsung brand 18650 lithium-ion battery is used, the initial power is 0, and it is charged to 100SOC by the blue electric test system.

[0066] refer to figure 1 Under the parameter conditions shown in the lithium ion battery thermal runaway gas, solid product collection and online offline test method, the gas product concentration of the lithium ion battery to be tested in the air atmosphere is tested for the concentration of the gas product thermal runaway, including the following steps:

[0067] (1) Use the lithium-ion battery thermal runaway gas, solid product collection and testing system to heat the lithium-ion battery. The operation method is: before the experiment, put the lithium-ion battery to be tested into the blue electric brand test system, charge it to 100SOC, and then put it Into the battery heating pool of the lithium-ion battery thermal runaway gas and solid product collection and testing system, and attach the temperature thermocouple of the temperatu...

Embodiment 2

[0072] Samsung brand 18650 lithium-ion battery is used, the initial power is 0, and it is charged to 100SOC by the blue electric brand test system.

[0073] refer to figure 1 Under the parameter conditions shown in the lithium ion battery thermal runaway gas, solid product collection and online offline test method, after collecting the gas product of thermal runaway of the lithium ion battery to be tested in the air atmosphere in this embodiment, test its lower explosion limit, and the solid product After collection, their thermal stability was tested, including the following steps:

[0074] (1) Use the lithium-ion battery thermal runaway gas, solid product collection and testing system to heat the lithium-ion battery. The operation method is: before the experiment, put the lithium-ion battery to be tested into the blue electric brand test system, charge it to 100SOC, and then put it Into the battery heating pool of the lithium-ion battery thermal runaway gas and solid produc...

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Abstract

The invention discloses a lithium ion battery thermal runaway product collection and test method, related to a lithium ion battery thermal runaway gaseous and solid product collection and online and off-line test method, which is particularly suitable for collection and test of thermal runaway products under different parameter conditions. The lithium ion battery thermal runaway product collectionand test method comprises the following steps: 1) setting a battery thermal runaway condition, and using an electric heating mode to make a battery to be tested come up thermal runaway under the setcondition; 2) collecting and obtaining the gaseous and solid products after the battery is thermal runaway; 3) testing the gaseous products collected in step 2); and 4) testing the solid products collected in step 2). The lithium ion battery thermal runaway product collection and test method disclosed by the invention takes the thermal runaway products of the lithium ion battery as the research object, and adopts different collection and test methods for different environmental atmospheres, different thermal runaway products and different test forms to obtain quantitative data of the dangerousdegree of the thermal runaway products of the lithium ion battery.

Description

technical field [0001] The method for collecting and testing thermal runaway products of lithium ion batteries relates to a method for collecting thermal runaway gases and solid products of lithium ion batteries and on-line and offline testing methods, and is particularly suitable for collecting and testing thermal runaway products under different parameter conditions. Background technique [0002] Today, as fossil energy is increasingly depleted, renewable energy is getting more and more attention. How to efficiently and economically store energy has become an urgent need. As an energy storage system, batteries can meet the needs of energy storage and use. With the rapid development of new energy vehicles and electronic equipment, small lithium-ion batteries with more powerful charging and discharging performance have completely changed the energy consumption market. However, under different use environments, especially under high temperature and other heat abuse conditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00G01N33/00
CPCG01N25/00G01N33/00H01M10/486H01M10/48H01M10/4285H01M10/0525H01M10/657G01N25/22G01N25/02Y02E60/10H01M50/30
Inventor 王志荣陈施晨佟轩
Owner NANJING TECH UNIV
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