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Lithium ion battery combustion detection method

A technology of lithium ion battery and detection method, which is applied in the direction of chemical analysis by combustion, can solve the problems of short circuit of surrounding batteries, overall accident of the battery pack, and no discovery, and achieve the effect of improving safety.

Inactive Publication Date: 2016-01-20
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

When the thermal runaway monomer releases heat, it will also discharge the internal conductive and flammable substances, causing the surrounding batteries to short-circuit, and causing the overall accident of the battery pack.
At present, there is no relevant technical solution that can effectively detect the combustion process of lithium-ion batteries

Method used

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  • Lithium ion battery combustion detection method
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  • Lithium ion battery combustion detection method

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Experimental program
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Embodiment Construction

[0023] The invention is applicable to both lithium ion battery cells and battery packs as detection objects. It is mainly realized by the following steps:

[0024] (1) Arrange recording devices and product collection devices on and around the battery; the recording devices can be temperature sensors, pressure sensors, gas sensors or cameras; product collection devices can be dust and gas collection devices and containers.

[0025] (2) The recording device and the product collection device are synchronized in time.

[0026] (3) Activate the data recording and product collection device, and start the fire source to cause the battery to burn.

[0027] (4) Save the data and products, start the ventilation system, and collect the remaining products.

[0028] (5) Describe the combustion phenomenon of lithium-ion batteries by the changes of ignition time, temperature, product toxicity and flame combustion state. Scoring table for burning phenomenon:

[0029]

[0030]

[003...

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Abstract

The invention provides a lithium ion battery combustion detection method. The detection method comprises steps as follows: arranging a collection device; determining a trigger mode; starting a fire source to cause battery combustion; collecting data; clearing residues and ejecta. The lithium ion battery combustion detection method provided by the invention has the advantages that the method is used for detecting the excitation source critical condition for inducing lithium ion battery combustion, high-temperature resistance as well as firing and combustion process and products of a battery, targeted prevention and control are realized, and the safety of the lithium ion battery is greatly improved.

Description

technical field [0001] The invention relates to secondary battery energy storage technology, in particular to a combustion detection method for lithium-ion batteries Background technique [0002] Lithium-ion batteries have entered applications such as power tools and electric vehicles, but the safety issues of lithium-ion batteries still plague people. In recent years, battery fire incidents of mobile phones and laptop computers have occurred many times, and large-scale product recalls have also occurred because of this. [0003] In general, the total energy stored in lithium-ion batteries is inversely proportional to its safety. As the number of batteries increases, the possibility of accidents also increases. When a single battery catches fire due to its own reasons or under external conditions, it may also generate an arc under working conditions, which will generate high temperature in a short period of time, which can directly ignite other surrounding monomers. When t...

Claims

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Application Information

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IPC IPC(8): G01N31/12
Inventor 李大贺杨凯高飞刘皓赵录兴王丽娜胡晨
Owner CHINA ELECTRIC POWER RES INST
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