Some Knowledge of Lithium Battery from Samsung Note 7

How lithium battery work?

Like all batteries, lithium battery needs energy storage first, and then gradually release energy through a chemical reaction controlled. For example portable solar power generator needs lithium battery to store energy when you use it to charge your phone or else. A lithium battery consists of two electrodes, that is, the power to enter or leave the location of the battery. These two electrodes called an anode and a cathode, respectively.

Popular point that consumers can regard two electrodes as a plus or minus sign on ordinary batteries. Using a lithium battery when discharging, the lithium ions move from the cathode to the anode, and during charging, the lithium ions move from the anode to the cathode.

Related components exist to separate the anode materials and cathode materials in lithium battery inside. If the two materials in contact, it will trigger combustion or explosion.

How the Explosion Produced of Lithium Batteries?

The professor Stephen Hackney said, the reason why the lithium battery is able to store so much energy, because lithium is an active material of a kind of "almost any material can contact reactions with it". This feature can cause an explosion.

The professor said that the most common cause of the explosion of lithium battery is charging foul. In the use of lithium batteries in electronic devices, often with associated software set of lithium batteries should be charging the battery, and a charging speed. If the relevant setting error occurs, it will make the battery appear in unstable compounds, the researchers called the emergence of a "thermal runaway" problem, which will lead to a fire or explosion.

If Li-ion battery temperature is too high, it will also lead to an explosion. So some smart phones will automatically alarm when the battery temperature is too high, and prompt the user to cool.

Another reason for overheating and explosion occurred in the manufacturing process, or the user's carelessness. If leaving unwanted material (such as a small piece of iron) in the battery manufacturing process, which will cause the battery to short circuit, causing thermal runaway.

Also users of electronic equipment in the event of fall, it will cause problems in the lithium anode and the cathode insulating material, cause overheating or explosion.