Battery thermal runaway and spontaneous combustion monitoring system

Battery thermal runaway and spontaneous combustion monitoring system

Overview

At present, due to the complex and diverse electrochemical reactions inside lithium batteries, the phenomenon of thermal runaway of individual cells is not yet possibleTo avoid the frequent occurrence of battery self ignition accidents, early safety detection of lithium battery thermal runaway is necessary. However, traditional safety monitoring methods such as temperature and voltage are difficult to achieve early warning, while innovative methods such as AC impedance cannot be commercially applied due to cost and accuracy issues. Gas monitoring has a shorter response time compared to parameters such as temperature, voltage, and creepage distance. Therefore, early monitoring of thermal safety events in lithium batteries through gas production phenomena plays an important warning role.

constitute

Battery thermal runaway and spontaneous combustion monitoring systemComposed of a trace level spectral multi gas analyzer host, sampling chamber/smoke hood, sampling pipeline, dedicated analysis software, multi-point sampler (optional), etc.

Battery thermal runaway and spontaneous combustion monitoring systemThe analysis host is based on ultraviolet absorption spectroscopy technology, infrared photoacoustic spectroscopy technology, cavity enhanced absorption spectroscopy technology, Fourier transform infrared spectroscopy technology, tunable semiconductor absorption spectroscopy technology, thermal conductivity technology, paramagnetic oxygen technology, and has a pulsed infrared light source. Through narrowband optical filters or semiconductor lasers, multiple spectral bands in the mid infrared region are formed for gas analysis; Ultra high sensitivity is based on enhanced cantilever beam optical wind technology, which can be achieved through various optical narrowband filters. Extremely narrow optical filtering can remove interference from background air; Multiple spectral regions can be advantageous for minimizing cross sensitivity.

The DKG-MPS multi-point sampler can freely expand gas sampling points from 12 channels to 64 channels, and the instrument can be applied to small flow gas sampling and high-temperature gas conditions. Configure and control through the application software on Win-PC, and automatically store data in Excel format; Realize standard digital or analog output through different interfaces. At the same time as the 12 channel simultaneous sampling, the multi-point sampling unit can also be connected to 12 temperature and pressure sensors to measure the sample gas temperature, air temperature, surface temperature, working temperature and air pressure of the multi-point sampling unit.

Battery thermal runaway and spontaneous combustion monitoring system

Features and Advantages

• Can measure over 300 types of gases, such as CO and CO₂、CH₄、C₂H₆、C₂H₄、C₂H₂、C₃H₆、C₃H₈、H₂、HCN、HF、HCl、NH₃、SO₂Benzene derivatives, etc;

• Ppb, sub ppm level detection limit;

• Composed of sampling chamber/smoke hood, multi-point sampler, sampling pipeline, monitoring microcomputer, UV absorption spectroscopy gas analysis sensor, photoacoustic spectroscopy multi gas analysis sensor, Fourier transform infrared gas analysis sensor, cavity enhanced gas analysis sensor, tunable semiconductor absorption spectroscopy gas analysis sensor, thermal conductivity/paramagnetic oxygen gas sensor, output device, system software, etc;