The courier bag was burned out of the big hole!Women's online shopping experience surprised the firefighters

"Is such a small button battery exploding and causing fire?

This is really rare. "

Hold a board buttons sent by the reporter,

The technicians at the fire of the fire rescue detachment of Hangzhou Fire Rescue Division were a bit surprised.

And immediately start the button battery

Study of the structure, principles, and other situations.

On June 22, the post -90s Hangzhou mother Xiao Yang contacted the reporter. She said that she bought some button batteries on the Internet a few days ago and was ready to install it on the children's electric toys, but when she got the courier packaged with a button battery, she was wrapped in But a little scared.

Boil a large hole in the foam courier bag,

A button battery exploded

"The express delivery was taken to the courier station of the community on the evening of June 21. When my husband took the courier, he didn't see the abnormalities, but when I took it home and waited for me to dismantle the express, I found that there was a hole in the courier bag on the courier bag. , I was also posted more courier lists. "Xiao Yang said, disassembling the outer packaging of the courier, a very pungent burnt smell came out.

After Xiao Yang took out the two -board battery in the courier bag, he immediately saw that a button battery in the middle of the board had exploded. "The packaging of the button battery is bulging, and the exploded battery looks intact, but there are already black substances 'squeezing' out of the battery shell." Xiao Yang's husband took out the exploded button battery, The battery has been divided into 4 parts, which are upper and lower layers of shells, a black round small metal piece, and a pile of burnt and solidified substances.

The couple went to check the courier packaging bag again, unveiled the more stickers, and found that the courier bag was burned out of a large hole, and there were black traces around the big hole.

Xiao Yang immediately contacted the seller on the online shopping platform, and patted the explosive battery and the burned courier bag to the seller. The seller said this was the first time. "The seller said that it may be an accident due to bumps or squeezing when the battery was transported." The seller retired from Xiao Yang as soon as possible, and suggested that she should not use the battery of the battery explosion. Essence

"I didn't buy it at this brand's flagship store. Will I buy a fake?" Xiao Yang said, the other five batteries of the other board were intact, but she dared not use it anymore.

The explosion is the button lithium battery,

The preliminary judgment may be caused by the internal failure of the battery

At noon the day before yesterday, Xiao Yang gave the battery that had an explosion to reporters. Subsequently, the reporter brought the battery to the fire of the Hangzhou Fire Rescue Detachment.

What type of explosion button battery is? Why explode?

Hangzhou fire fire technicians carefully checked the outer packaging, explosive battery and other remaining batteries of the buttons.

"This is definitely a lithium battery. It is not surprising that the lithium battery explodes and fires, but such a small button battery can have this power after the explosion, which is a bit unexpected." Through observation, fire technicians are in the fire technician in the observation. The word "lithium battery" was found on the battery outer packaging, and then through the battery structure, it was confirmed that the button battery was indeed a lithium battery.

After consulting the relevant information, the fire-fire technical personnel further confirmed that this is a "CR2032 3.0V lithium-manganese dioxide battery". It is a common lithium battery in life. It has good discharge performance and cheap price. , Good safety performance and other characteristics.

(Interception from the brand's button battery sales advertising picture)

After confirming that this is a lithium battery, fire fire technicians analyzed the structure of the battery. The entire battery consists of negative electrode shells, negative electrode lithium materials, diaphragm, sealing ring, positive electrode material, positive pole shell and other parts. "This is similar to the structure of most lithium batteries."

Why does the lithium battery explode fire? Most of the reasons are the direct contact and response of positive and negative pole materials. "The role of the diaphragm in the lithium battery is to isolate positive and negative electrode materials to avoid direct contact and severe reactions." Fire fire technicians said that severe collisions, squeezing, and internal batteries may cause damage to the diaphragm, positive and negative poles Direct contact with the material can cause explosion and fire.

After the overall observation, the fire fire technicians did not find the traces of severe collisions and squeezing in the explosive butt battery and battery packaging site. It can be preliminarily determined that the battery explosion and fire caused by the battery failure.

Of course, the reasons for internal failure are also very complicated. Fire fire technical personnel have made several speculations: one is that the battery itself has quality problems, or it may be fakes; the other is that the battery has been severely shocked during transport The displacement; the third is that the battery encountered high temperature during storage and transportation; the fourth was that the external force destroyed the battery structure.

After analysis, the possibility of the first and second speculation is greater.

Any battery may have a fire explosion,

Hangzhou Fire gives suggestions

"Fortunately, this battery did not cause a big disaster." Fire fire technicians said that it can be confirmed from the damaged express bag that the internal heat of the button battery produces high -temperature flue gas and Mars spray. "If the fire expands, it is likely to cause serious consequences such as fire transportation vehicles and fire stations."

Although the explosion of this button battery is a very small probability event, many fire prevention experience can still be summarized."Whether it is a small button battery, or a larger electric bicycle battery, or even the power battery of electric vehicles, there is a possibility of fire or even explosion." Fire fire technicians said, so in transportation, use, and storage of various typesWhen the battery, you must take it lightly, avoid squeezing, and avoid external impact. At the same time, the battery should be far from flammable and explosive items, and do not approach high temperature and fire source. Do not enter the home charging in the home.

In addition, Hangzhou Fire also reminded that when purchasing various batteries, you must choose a direct -operated store of regular manufacturers and regular brands, such as buttons and dry batteries. You must stay away from children when stored at home.

Source: Qianjiang Evening News

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