Cháy pin điện ở Trung Quốc: Nguyên nhân do đâu?

các chuyên gia cho biết các quy định an toàn hiện hành không theo kịp tốc độ tăng trưởng nhanh chóng của thị trường pin điện ở Trung Quốc.

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Across China, more and more lithium-ion batteries, commonly used to power e-bikes, are catching fire or exploding (phát nổ), underscoring (nhấn mạnh) a pressing need for more safety measures and regulation (quy định). 

Speaking to Sixth Tone, experts say that the increasing number of fires highlights the potential hazards (nguy hiểm tiềm ẩn) associated with cheap but subpar (không đạt chuẩn) batteries, particularly in a country where demand is now outpacing (vượt xa) current safety regulations. China issued new national standards for electric vehicles and batteries in 2020. 

[...] Most electric battery-related incidents stem from (bắt nguồn từ) factors like overcharging (quá tải) or short circuits (mạch điện) while using incompatible (không tương thích) charging docks (cục sạc) that lead to overheating and, in some cases, explosions.

Sometimes, temperatures within a battery that’s being overcharged can rapidly reach 900 degrees Celsius in just three minutes, often leading to fires that spread quickly due to the flammable materials (vật liệu dễ cháy) used in such batteries. 

Experts say that lithium is among the most difficult elements to control after combustion (cháy). Once exposed to air, it can react with oxygen, which can further result in intense combustion and even explosions.

source: Sixth Tone,