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Introduction to the safety of two wheeled battery
The safety summary of two wheeled battery is lithium iron phosphate > ternary lithium > lead-acid battery.
The thermal stability of lithium iron phosphate is currently the best in automotive lithium batteries. Two wheeled battery manufacturers tell you that the thermal stability of the lithium iron phosphate cathode material itself is much better than that of ternary lithium. It has extremely high stability within 500 degrees Celsius, and thermal runaway occurs when it exceeds 800 degrees Celsius. In the event of thermal runaway, the heat release of the lithium iron phosphate battery is also very slow, and no oxygen is released during decomposition, only smoke is emitted, reducing the risk of fire.
In contrast, the thermal stability of the ternary lithium battery is poor, and it begins to dissolve at around 300 degrees Celsius. The two wheeled battery manufacturer tells you that in the spontaneous combustion event of electric vehicles, ternary lithium battery models indeed occupy a larger proportion. . Therefore, the ternary lithium battery has very high requirements on the battery management system, and needs an anti-over-temperature protection device and a battery management system to protect the safety of the battery.
The lead-acid battery is more dangerous. When the lead-acid battery is overcharged, it will also produce flammable hydrogen and oxygen. Hydrogen is easy to explode in case of fire. Charging in a closed environment is also very dangerous. Two wheeled battery manufacturers tell you that although the application scope and technology of lead-acid batteries are more extensive and mature than lithium battery packs. However, the lead-acid battery itself is much less safe than the lithium battery pack in the process of material composition and use.
The two wheeled battery manufacturer tells you that under high temperature conditions, the safety of lithium iron phosphate is relatively high.