Why will the mobile phone explod?

　　Author ：Iflowpower – Furnizuesi portativ i stacionit të energjisë elektrike

Original 1: Yin and Yang Bi Pole intimate contact Samsung Note7 battery explosion is because on some mobile phones, the battery yin and yang bodies can't touch each other. However, this is only one of the protesters, and the lithium-ion battery explosion has other common origins, and this is because we have more and higher the performance requirements of mobile phones. To explain the scientific principle of battery explosion, we must first understand the working principle of the battery.

There are two electrodes on the battery, one of which is positive electrode, referred to as a cathode. The cathode is filled with lithium elements, it is a place for fuel storage. Another opposing electrode contains negative electrical ions, called an anode.

During the charging process, lithium ions will move from the cathode to the anode. The battery is in the process of use (discharge), the direction of movement of lithium ions is opposite. There will be a chemical substance called electrolyte between yin and yang, which helps electrical ion movement, conductive current.

Although the tight work of the battery of the lithium ion, they cannot be copied, that is, the positive negative two poles cannot be contacted. In order to prevent this, battery manufacturers generally put them on the yin and yang poles. The Note7's explosive element is fierce this partition.

The partition has a defect. The positive and negative poles occur intimate contact, the power pen is straight to the intermediate electrolyte rather than the electrodes on the side, then a battery exploded. The electrolyte itself is actually unstable, so the electrospan movement will be unstable.

When there is a lot of heat (whether internal or external), the electrolyte may be chemically reacted with other substances, the gas and the release of more calories. If this process has not been effectively controlled, it will appear thermal out-of control, and then wait for the battery to explode or fire. Original 2: excessive charging and charging too fast this is also the original manufacturer to add overheating shutdown mechanisms in the equipment.

However, this is only a kind of original caused by explosion, sometimes the battery is overcharge or charges too fast. Excessive charging is like increasing water in the bucket. For the bucket, there are more water, and it is full of flowing out, but the battery can not work.

When over charge, there will be too much lithium element into the anode. Of course, the average person does not have to worry, from the theory, you don't have any problems in the bed of the bed, because the manufacturer's design will automatically guard the battery. It is really caused that the battery problem is the negligence of manufacturers in the process of processing, and their battery circuit has problems and cannot prevent overcharge.

Princeton University Materialist Stangart said that the battery is like a rubber band, when charging, it is like you in stretching the rubber band, and when using the battery, it is like it is released. If you pull the rubber band too tight, it will go straight down. In addition, charging is too fast, it is also another original origin of explosion.

It will cause huge pressure to the battery in a short period of time. If the battery is short, it will cause danger. If the battery is metaphor as two slabs of the egg, then the lithium ions should be shuttled between the two egg parsings when charging so that it is stacked in it.

If the slow charging, the lithium ions have enough time to find their position in the crate. However, if the charging is too fast, or the charging is over, the lithium ions will hold the hands and finally stacked outside the crate. If such a phenomenon occurs each time, the accumulation of lithium ions in the box will become more serious and eventually leading to battery short circuit.

Original 3: High voltage to cause a battery accident, a high voltage, using this technique, manufacturers can make battery storage more power. The voltage and current are like a waterfall and water flow, the higher the waterfall, the more water below the water. Similarly, the higher the voltage, the more electric energy stored in the battery.

Therefore, the manufacturer tries to increase the voltage by adding elements such as nickel to the battery. However, the higher the voltage, the easier the electrolysis, the more chemical reaction, which will cause a fire or explosion.