Lithium battery leakage detection

　　Aiming at the characteristics of miniaturization of lithium battery industry and technical challenges such as low electrolyte leakage concentration and difficult detection, PID (Photo Ionization Detector) technology is applied to rapid detection of VOC gas in lithium battery, providing users with effective lithium battery leakage detection products. At present, PID technology has been unanimously recognized and widely promoted in the industry in terms of lithium battery leakage detection.

　　By virtue of the characteristics of ultraviolet light, organic gas molecules are excited by ultraviolet light in the ionization chamber, and the excited organic gas molecules are ionized into particles with positive and negative charges. Under the effect of the electric field of the polarization plate, the charged particles hit the plate, forming a weak current that can be detected. The micro current signal generated by the movement of these particles is amplified by the amplifier. After circuit amplification and data processing, the concentration and other parameter values can be displayed on the display.

　　Leakage detection: once the battery leaks overnight, its internal electrolyte will flow out of the battery. If the electrolyte can be detected sensitively, you can judge whether the battery leaks. PID (Photo ionization detector) technology is applied to the rapid detection of VOC gas in the lithium battery. A set of photoionization sensors PID (photo Ionization Detector) is used to detect organic volatile components, It is used for the detection of trace VOC volatilization. The working process and principle are as follows: the gas in the environment to be detected is sucked into the photoionization device through the built-in air pump for ionization, and the organic gas is ionized. The ionization voltage is collected and converted into a digital display. The value reflects the molar content of the organic gas in the environment, generally in PPb and PPm.

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