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release time:2024-09-10 Hits: Popular:AG11 battery
Introduction to the safety of button cell battery cr2025 and lithium iron phosphate battery packs
When the lead-acid battery reaches the final stage of charging and the poles are converted into useful substances, if it continues to be charged, a large amount of hydrogen and oxygen gases will appear. When the concentration of these mixed gases reaches a certain concentration in the air, and there is no time to dissipate, the exhaust holes may be blocked, and there is too much gas, then an explosion may occur when encountering an open flame. This kind of environment may damage the lead-acid battery at least, or cause serious harm to the user's personal life and surrounding environment.
short circuit
When using button cell battery cr2025 in daily life, they should be inspected regularly to prevent a series of dangerous accidents caused by battery short circuit.
Although a short circuit of the positive and negative poles of a lead-acid battery will only cause the battery to catch fire, a short circuit of the positive and negative poles will often cause other malfunctions in the battery. For example, if the water filling hole is blocked, the gas cannot be discharged and expands, and sparks will ignite from the rusted poles. The released hydrogen detonates the hydrogen and oxygen mixed gas inside the lead-acid battery, causing the battery to explode. Materials such as sulfuric acid in the battery that are highly harmful to humans and the environment will also leak out.
Safety hazards of lithium iron phosphate battery packs
temperature
When the lithium-ion battery pack is used improperly, the internal temperature of the battery will rise, causing the decomposition of living substances in the positive electrode material and the oxidation of the electrolyte. At the same time, these two reactions can produce a large amount of heat, causing the battery temperature to further rise.
The electrolyte of the lithium-ion battery pack is a mixed solution of lithium salt and organic solvent. The commercial lithium salt is lithium hexafluorophosphate. This material is prone to thermal decomposition at high temperatures and undergoes thermochemistry with trace amounts of water and organic solvents. echo, reducing the thermal stability of the electrolyte.
construction process
During the manufacturing process of lithium-ion battery packs, processes such as electrode manufacturing and battery assembly will have an impact on the safety of the battery. The quality control of various processes such as mixing the positive and negative electrodes, coating, rolling, cutting or punching, assembly, adding the amount of electrolyte, sealing, formation, etc., all affect the performance and safety of the battery.
Which one compares in safety between lead-acid battery and lithium iron phosphate battery pack?
From the above content about the safety hazards of button cell battery cr2025 and lithium iron phosphate battery packs, it can be seen that the biggest safety hazard of button cell battery cr2025 lies in their composition materials.
The electrical complex of button cell battery cr2025 is mainly made of lead and its oxides, and the electrolyte is sulfuric acid solution.
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