Lithium ion battery pack thermal runaway automatic monitoring method based on infrared thermal imaging technology

A lithium-ion battery pack and infrared thermal imaging technology, which is applied in radiation pyrometry, measuring devices, optical radiation measurement, etc., can solve problems such as thermal runaway, fire and explosion, and achieve reliability and safety, low delay, and The effect of reducing the possibility of fire and explosion accidents

Pending Publication Date: 2018-07-27
NANJING UNIV OF TECH
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Problems solved by technology

These unsafe behaviors are extremely easy to trigger dangerous side reactions inside the b

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  • Lithium ion battery pack thermal runaway automatic monitoring method based on infrared thermal imaging technology
  • Lithium ion battery pack thermal runaway automatic monitoring method based on infrared thermal imaging technology

Examples

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[0040] Example 1:

[0041] When in use, install the two infrared thermal imaging cameras on the vertical line of the diagonal of the lithium-ion battery pack, at a distance of 70mm from the diagonal of the battery pack to be monitored. The normal direction of the thermal imaging camera and the C surface of the battery pack 1 The included angle is 30°, and an infrared thermal imager is set on each side of the body diagonal.

[0042] Now suppose that a certain 18650 lithium-ion battery pack performs a discharge reaction within the monitoring range of an infrared thermal imaging camera, and the current temperature is abnormal. The early warning method includes the following steps:

[0043] 1) After the infrared thermal imaging camera acquires the infrared image of the battery pack, it feeds the image back to the computer 6 in real time, and is analyzed by the computer software module to obtain the highest temperature in the image and its location, and display the analysis result and the...

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Abstract

The invention relates to a forecasting and early warning automatic alarming apparatus and an automatic alarming method thereof based on lithium ion battery pack thermal runaway, in particular to a lithium ion battery pack thermal runaway automatic monitoring method based on an infrared thermal imaging technology. Thermal runaway in the warehousing storage and charging process is subjected to temperature alarming, and online monitoring and timely early warning are conducted on a lithium ion battery pack through online infrared thermal imagers. The forecasting and early warning automatic alarming apparatus involves a monitoring device part, a control part, an alarming device part and an auxiliary device part, wherein the infrared thermal imagers are adopted for the monitoring device part, the auxiliary device comprises a relay, the control part comprises a computer and a computer display, the computer display is connected with the computer, and program modules are arranged in the computer; the monitoring device part, the alarming device part and the auxiliary device part are connected with the control part separately through a USB interface. The lithium ion battery pack thermal runaway automatic monitoring method has the advantages that real-time online monitoring is achieved, the response is quick, and the operation is simple.

Description

technical field [0001] The invention relates to a predictive and early warning automatic alarm based on thermal runaway of lithium-ion battery packs and an automatic alarm method thereof, in particular to an automatic monitoring method for thermal runaway of lithium-ion battery packs based on infrared thermal imaging technology, which can be used for warehouse storage and charging processes. The thermal runaway in the battery is used for temperature alarm, and the lithium-ion battery pack is monitored online through an online infrared thermal imager and given a timely warning. Background technique [0002] Lithium-ion batteries have the characteristics of high specific energy, long life, high specific power and low cost. They are widely used in small electronic products such as mobile phones and notebook computers, and have shown a wide range of applications in new energy vehicles such as electric vehicles and hybrid vehicles. Prospects. In recent years, there have been man...

Claims

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Application Information

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IPC IPC(8): G01J5/00
CPCG01J5/0096G01J2005/0077
Inventor 王志荣杨赟卢亚伟高天峰刘凯焦飞
Owner NANJING UNIV OF TECH
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