Fire protection is the first consideration for using lithium power batteries

Many people may be familiar with lithium power batteries from mobile phones. In fact, it is used in many home appliances. Undoubtedly, the advantages of high efficiency and light weight of lithium power batteries are promptly popularizing and applying them. However, do you know that if you use it carelessly, it will also make you "fire" the upper body?

The lithium battery has the advantages of light weight, high efficiency, low temperature resistance (-40 ° C), etc. The 0.3 mm thick, stamp-sized lithium battery can be used continuously for more than 5 years. In recent years, the existing alkaline dry battery and manganese battery are being phased out. Widely used in many high-end appliances and mobile phones.

The lithium battery is different from the zinc chloride and potassium hydroxide water-soluble electrolyte of the existing manganese battery and the alkaline dry battery, and it uses an organic solvent. The positive electrode of the lithium battery is made of manganese dioxide, lead fluoride or thionyl chloride. The lithium metal foil used for the negative electrode has a stronger ionization tendency and a larger voltage difference between the positive and negative electrodes than the zinc chloride used in the negative electrode of a general battery, thereby improving the working efficiency of the lithium battery.

However, lithium power batteries often have heat and burning during use, which affects the use of the host, and severely burns the host to cause a fire. According to reports, in Japan in recent years, there have been many home fire accidents caused by the burning of lithium power batteries.

Then why does the lithium battery heat up and burn? Many of the materials in lithium power batteries can be exposed to water and can undergo a violent chemical reaction and release a large amount of heat to cause heat and combustion. The manganese dioxide of the positive electrode of a lithium battery can be heated only by a small drop of water. After the contact of thionyl chloride in water with lithium, the release of heat energy while generating hydrochloric acid and sulfur dioxide, several factors make the lithium battery become a "fire" in life, so people must pay attention to waterproof and anti-proof when using lithium power batteries. moist. After the various hosts are deactivated, the lithium battery should be taken away from the dry and low temperature for proper storage to prevent and avoid the occurrence of household fire accidents caused by improper use of the lithium battery.

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