Why does Laptop Battery gets Overheat
Why does Laptop Battery gets Overheat – There are many companies intended to manufacture laptop batteries. Among them popular faces are Dell, Apple, Toshiba, Lenovo, Sony and others. We use computers hours which directly consume power from batteries when not connected to power supply. Today most of the batteries have lithium ion inside it. Generally, all these batteries do not get overheated on work but this can be possible due to the internal fault. The problems may be overheating, burning, explosion or a fire.
In order to understand the reason behind it, we have to know how batteries work and its internal mechanism. It has a negatively charged terminal and a positively charged terminal. The energy from electrochemical reactions causes electrons to collect at the negative pole. Since charged particle are attracted towards opposite charge, so after completion of circuit the electrons will flow from negative pole via circuit to positive pole. So, battery generates electricity. The circulation or moving of electron varies upon the type of batteries.
In lithium ion type battery, there is a pressurized container with coil of metal and a flammable lithium ion liquid. There are tiny pieces of metal that float in the liquid. The manufacturer limits the size and number of metal fragments for good conduct. The cells of a lithium ion battery contain Separators that keep the anode and cathode away from each other.
Now if the battery gets heated during use or recharging, the pieces of metal could move around the container. When these metals get closer to the separator, it can harm the separator and create a short circuit. The short circuit will possibly result into —–
- Fire – The short circuit creates a spark through which flammable liquid can ignite causing a fire.
- Explosion – If temperature inside the battery rises rapidly it can explode.
- Leak out – If it causes the temperature to rise slowly, the battery can melt and create hole.
The demand of thin, lightweight and small laptops is among the major reasons behind overheating, explosion or a fire. Since the reduction in size makes the battery more likely to fail, break, leak or short circuit.