What is the reason why smartphones explode and how to prevent them?

Battery explosion problems are quite rare, but not impossible. Recently, the global recall of Galaxy Note 7 devices is related to the explosion of phones, which is caused by a lithium-ion battery error. So what is the main reason for the lithium-ion battery explosion? And how to prevent the explosion of smartphones?

1. Causes of lithium-ion battery explosion:

There are two main reasons for the lithium-ion battery to explode, such as battery damage or pressure from heat . Firstly, because the battery is broken in structure, it may be because the phone is dropped, bumping too hard. For lithium-ion batteries, which have a structure made up of very thin parts, just a break in the structure of the cell cells will lead to short-circuiting, matching batteries and eventually increasing the risk. explosive. In addition, the use of low-cost, low-grade batteries also causes an increase in the risk of fire. The reason is that inside there is the possibility of very small and inadvertent metal particles, they come in contact with other parts of the battery cell, leading to short-circuiting.

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The second case of explosion is during charging that most Note devices have. Too high a temperature rise over a long period of time will result in short-circuit that occurs continuously inside the battery, thereby destroying the structure of the battery. However, this only occurs at very high temperatures or the battery is faulty. Overcharging is also a cause, the battery will receive more current than its control to keep everything safe, since the temperature will increase and the risk of explosion will appear.

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Excessive heat in a certain area of ​​the battery may lead to "heat escape." This happens when a certain area of ​​the battery cannot cool down fast enough, leading to a reaction to break the chain, causing more and more heat. In other words, overheating causes a reaction that accelerates the process of heating up. In the end, it will lead to battery burning or exploding.

With a high-quality battery, the manufacturer will feature safety features to ensure that dangerous reactions can be prevented. But if a bad quality battery will lead to a fire.

2. Charging the battery also creates heat:

The trend to switch to fast charging technology also causes too much heat hazards. This means adding more electricity to a li-ion battery and always having heat when it is applied. The more electricity, the more heat is generated. Although the battery will be able to cool itself, there will be some heat lost during the fast charging conversion and exit through the circuit that controls the charging process, which is usually located next to the battery. Therefore, make sure the heat at one end of the battery is higher than the other end.

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Not only the battery but the smartphone processor is also a source of heat. Statistics show that microprocessors in smartphones today produce far more heat than device models 3 to 4 generations ago. Although these microprocessors are usually not located near the battery, they contribute to the creation of more heat inside the machine, thereby making the heat from the emitted battery harder to escape.

3. How to prevent the explosion of smartphones?

Whether with Samsung Galaxy Note 7 or any other smatphone device, users should pay attention to some common tips to protect the device from the risk of fire, as well as protect yourself from this dangerous incident,

1. Stop charging if the phone becomes too hot .Allowing the phone to cool down, rest a little after continuous operation, . and then proceed to charge will limit the phenomenon of overheating while charging.On the other hand, it is necessary to completely remove the electrical cladding device, the object obstructs the ability to escape heat.
2. Use the charger that comes with the device , because it ensures proper voltage and intensity parameters for the phone.Some opinions also suggest that if you charge your phone with a USB-C cable or Quick Charge charger, it is best to use the cable attached to the device.
3. Do not charge the phone in bed .This is a dangerous habit when plugging in the charger and holding the phone in bed.Unintentionally placing the phone in a blanket, pillow, or mattress makes the temperature more difficult to spread outside.At the same time if there is an explosion when you are sleeping, it is also a very dangerous situation.
4. The device should be charged in a cool, well-ventilated place .Avoid charging the device under direct sunlight, the heat exit edge of the computer, in an air-conditioned car, on hot days, .

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If the battery is detected to be too hot, inflate the battery, have a strange smell, . immediately unplug the battery and remove the battery if possible.

Refer to the following articles:

1. How to avoid "warranty stamp trapping" laptop?

1. How to recognize genuine iPhone 6

1. Phone does not charge or charge slowly, this is how to handle it

Hope the above article is useful to you!