explosion-proof-walkie-talkie-battery-material
Explosion-proof walkie-talkiebattery material refers to the ability of the battery to prevent explosions or fires caused by short circuit, overcharge, over-discharge, high temperature and other reasons during the manufacturing and use of the battery. The choice of explosion-proof walkie-talkie battery material mainly depends on the chemical type of the battery, shell material, protection circuit and explosion-proof level.
Currently commonly used chemical types of explosion-proof walkie-talkie batteries include lead-acid batteries, nickel-chromium batteries, nickel-metal hydride batteries and lithium batteries. Among them, lithium batteries have the advantages of high energy density, long service life, high rated voltage, and low self-discharge rate, and are currently the most advanced type of explosion-proof walkie-talkie batteries. Lithium battery manufacturing materials generally use materials such as graphite and lithium cobalt oxide to store lithium ions.
The selection of explosion-proof walkie-talkie battery shell materials mainly considers factors such as corrosion resistance, wear resistance, high temperature resistance and conductivity. Generally speaking, explosion-proof walkie-talkie battery shells should be made of anti-static materials, waterproof, dustproof, and anti-corrosion, and are suitable for harsh environments. According to different explosion-proof types, shell materials also have different requirements.
The design of the explosion-proof walkie-talkie battery protection circuit is mainly to avoid safety hazards caused by battery overcharge, over-discharge, short circuit and other abnormal conditions. The protection circuit can monitor and control the voltage and current at both ends of a single cell or battery pack, and cut off or limit charging and discharging when the limit is reached. The protection circuit can also be equipped with an over-discharge protection device and a reverse connection protection device to prevent reverse charging of the single battery.
The explosion-proof level of explosion-proof walkie-talkie batteries is mainly determined by testing and certification according to international or national standards. Different standards have different classification methods and evaluation criteria. For example, the ATEX standard is a set of directives and specifications issued by the European Union regarding the use of equipment in flammable and explosive environments. The ATEX standard divides equipment into three categories: Class I (mine), Class II (non-mine) and Class III (dust). Each category is divided into different groups and temperature groups to indicate the environment in which the device can be safely used
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