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How to safely use lithium battery pack to prevent battery explosion?

by:Vglory      2020-12-05
Source: 2020 - 04 - 01 'hits: time how to safely use lithium battery pack, prevent battery explosion? How to use lithium batteries to avoid battery burst? In recent years, the combustion and explosion of lithium ion battery, such as samsung galaxynote7 explosion, tesla electric car spontaneous combustion, and combustion of lithium ion battery factory. So what should we do? How to use lithium batteries to avoid battery explosion? In this paper, the author mystery of small batteries for you. Why is lithium battery explosion? The type of battery core blasting can be summarized as external short circuit, internal short circuit and overcharge. The safety of the lithium ion battery is not only related to the nature of the battery data, also associated with the preparation technology and application of the battery. 1. Large internal polarization; 2. Pole piece suction, and react with the electrolyte to the gas drum; 3. The quality and function of the electrolyte itself; 4. Liquid injection rate during liquid injection can not meet the requirement of the process; 5. When installation, laser welding sealing performance is poor, when measuring the leakage; 6. Dust and polarity dust easily cause micro short circuit; 7. Is the cathode piece of the process planning of thick, not easy to enter the shell; 8. Filler sealing problem, steel ball seal function insufficient gas drum; 9. Shell of incoming material have thicker wall of the shell, shell thickness deformation effect; 10. High outside temperature is the main reason for the lithium battery packing blowout. In addition, for mobile phone lithium ion battery, due to improper use, such as kneading, impact inflow, make cell expansion, deformation and cracking, it can form the battery short circuit, in the process of discharge or charge due to the explosion heat. How to avoid the lithium battery burst? Due to the lithium ion battery electrolyte containing flammable, using human body kinetic energy power for electronic devices such as new energy supply is still in the experimental stage. Another solution is to directly in the existing add flame retardant electrolyte. In order to complete the flame retardant, however, need to add a lot of flame retardant in the electrolyte, it will correspondingly reduce the ionic conductivity of the electrolyte, significantly influence the electrochemical function and energy density of lithium-ion battery pack. Stanford university researchers have found a new kind of 'smart' electrostatic separator, it has a hot triggers, and can be used to avoid burning flame retardants of lithium ion batteries. In this structure, the flame retardant is encapsulated in a polymer maintenance shell, in order to prevent the fire retardant directly dissolved in the electrolyte, negative influence on the function of the battery. When the lithium battery internal heat is too high, the battery repair shell will be dissolved due to high temperature, release of flame retardants, can be used to inhibit combustion of inflammable liquid electrolyte. 1. Use the original charger, charging time was a period of high incidence of lithium battery explosion. Compared with a compatible charger, original charger is more likely to ensure the security of the battery. 2. Using solid battery: as far as possible to buy original battery or famous brand batteries, such as good treasure lithium battery. Don't buy 'used' or 'parallel' battery to save money. 3. Don't put the battery in extreme environments, high temperature, knock against and other important reasons for the formation of the lithium battery explosion, try to make the battery in a stable environment, away from the high temperature parts. 4. Don't check repair: repair, battery may have not considered before a environment, increased security issues.
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