The reason why Pacific Automotive Network lithium battery fires cannot be extinguished with water is that the voltage of household lithium batteries is not high. Even though water is conductive, it will not produce electricity. UPS lithium battery explodes, special fire extinguishing system is required.
The reason why lithium battery fires are extinguished with water is that the voltage of general household lithium batteries is not high. Even though water is conductive, it will not produce electricity. However, if a large UPS lithium battery. explodes, a fire extinguishing system must be given special attention. The reasons for not using dry powder fire extinguishers are: the breathability and cooling performance of dry powder fire extinguishers are not very good, and they can only prevent temporaryement fires or explosions, but the lithium battery fragments will burn again after a few minutes. ; water can enter the equipment, and in addition to flames, it can be cooled quickly to prevent re-ignition. To prevent misuse, lithium-ion batteries have a triple protection mechanism. One of them is to use a switching element. If the temperature inside the battery increases, its resistance value increases. If the temperature is too high, the power supply will be automatically stopped. The temperature rises to a certain value, the separator automatically dissolves to prevent lithium ions from passing through. The third is to install a safety valve. When the internal pressure of the battery increases to a certain value, the safety valve will automatically open to ensure. battery safety.
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