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Why Mobile Devices Catch Fire And Explode by SCHOOLBUOY(m): 12:51pm On Aug 25, 2015 |
Many incidences have been reported around the world in past few years, when a mobile device turned into a bomb. In some cases result was turned into loss of life and some cases reported where the users are seriously injured by the device explosion. So what makes the laptops, mobile phones and other mobile devices to catch fire and explode like a bomb. The main explosive component found behind the scene is the lithium ion power pack inside the devices. Mobile phones, laptops and all other mobile devices require a power source. The battery pack inside a device energizes the device to work for long period without getting recharge early. The dominating chemistry which is capable to energize the devices for long time after a full charge is Lithium Ion chemistry. The common component among all the devices is the lithium ion energy pack inside them. These batteries are high energy density batteries which are capable to store high energy with respect to their weight. This battery is the key component which made it possible to go mobile with all devices we use. In spite having an advantage of high energy density this batteries sometime turns into a bomb. These batteries have some limitations of not tolerating overcharging and overheating. Overheating makes this batteries unstable causing them to adopt a chain reaction, termed as thermal runaway. This thermal runaway causes it to heat up more and more resulting it to catch fire. Not only it catches fire but it explodes with great intensity with device particles scattering around the area of explosion. These explosions are intense enough to severely burn the person near to it and in some cases the victims lost their lives. Nobody knows what will happen in next moment with their devices. But awareness may prevent us from facing such critical situations. We can’t live without our cell phones, laptops, tabs etc. These are the part of our life now. But we can ensure our safety while using these devices. To work safely with our devices first we have to understand why this happens and how it can be avoided. So let us understand what are the reasons behind these explosions. Lithium ion batteries are high energy density packets. These batteries consist of two electrodes one is made up of carbon and other is made up of lithium. These two electrodes are separated with a thin insulation film inside the battery. These batteries do not tolerate over charging. So to prevent the battery from over charging these batteries have a preventive circuit inside them. This circuit disconnects the input supply after battery get a full charge or slightly before the full charge state. But sometimes this preventive circuit does not work as expected causing the battery to overcharge. These batteries do not tolerate overcharging. Overcharging develops excessive heat inside the battery and trigger a chain reacting which generate more and more heat. This is termed as thermal runaway. This thermal runaway is an uncontrolled reaction which makes the battery to catch fire and explode. Similarly a damaged protective circuit short circuit the battery electrodes internally causing it to generate heat and same thermal runaway trigger an uncontrolled chain reaction causing more and more heat generation. Finally an explosion occurs. There are very few chances of damaged preventive circuit due to manufacturing defects. Millions of lithium ion batteries are manufactured every year. Manufacturers around the world many times recalled their laptops, phones, tabs etc after getting few over heating feedbacks. Most of the time consumers are responsible for such accidents. People buy cheap unauthorized batteries and chargers from the market for their devices. Manufacturer provides specifications for chargers for device batteries but most of the people never pay attention towards charger specifications. They practice battery charging with unauthorized chargers with some cheap charger extensions available in the market. This affects the battery protective circuit and sometimes damages the circuit. Battery with a damaged protective circuit performs normally but overcharging happens every time and results it to catch fire. So always buy and use specific batteries and chargers from manufacturer authorized suppliers. Lithium ion batteries sometimes exposed to heat, like placed on hot dashboard of car, near cooking stoves, in intense sunlight, near vehicle radiator while checking vehicle. Such surrounding hot conditions damage the insulating film between the electrodes and causes short-circuit of electrode inside. while using a device if you feel your battery is overheating then it should be taken to the service center for testing, and if found any defect in it, immediately change the battery pack and make test for charger as well. Below are some precautions which should be taken with the devices having a lithium ion battery pack. WHY MOBILE DEVICES CATCH FIRE AND EXPLODE August 24, 2015 SOLAR BATTERY – LITHIUM ION BATTERIES FOR SOLAR ENERGY STORAGE SYSTEM August 12, 2015 SOLAR BATTERY – TYPES OF BATTERIES FOR SOLAR STORAGE SYSTEM August 6, 2015 ELECTRICAL (1) ELECTRICITY (1) FLUID MECHANICS (1) MECHANICS (1) MOBILE PHONES (1) RENEWABLE ENERGY (3) SOLAR ENERGY (3) SOLAR BATTERY – TYPES OF BATTERIES FOR SOLAR STORAGE SYSTEM August 6, 2015 SOLAR BATTERY – LITHIUM ION BATTERIES FOR SOLAR ENERGY STORAGE SYSTEM August 12, 2015 THE COMPRESSIBLE FLUID ‘AIR’ April 26, 2015 Terms of Use | Privacy Policy | Copyright | Disclaimer © 2015 Science Infusion All Rights Reserved Powered by Nirvana ELECTRICAL WHY MOBILE DEVICES CATCH FIRE AND EXPLODE Never short circuit the device battery terminals with coin or any other metal part. Never press, deform, drop or make battery to undergo impact loading. If it is accidentally dropped then take it to the service center for testing and replacement. Do not charge lithium ion battery directly from a DC source. Always use the specific charger for the battery. Do not overcharge the device battery. Switch of the charger as soon as possible after getting full charge. If battery is overcharging and generating heat while charging then replace the battery and charger. Never put your devices in extreme hot surrounding temperatures. Never spill any liquid on your device battery. Use manufacturers authorized batteries and chargers for your devices. Newer buy cheap alternatives. Never try to fit other model batteries into the devices. This may change the polarity of battery and may cause a big accident. Never play with your device batteries and never give your devices and batteries to children. Never cut or try to open a lithium ion battery.
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Re: Why Mobile Devices Catch Fire And Explode by Unsad(m): 12:52pm On Aug 25, 2015 |
Yu expect me to read this Ababio abi. Smh |
Re: Why Mobile Devices Catch Fire And Explode by Elosky20: 1:13pm On Aug 25, 2015 |
joy |
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