Necessity is the mother of invention. The phrase is absolutely true in case of fire extinguishing feature in the batteries. Especially after few of the Samsung Galaxy Note 7 burst into flames last year. Battery fire incidents highlighted the need of fire extinguishers in batteries. Owing to the safety of the consumers, Samsung called off its Galaxy Note 7s. However, using fire extinguishing batteries would prevent the companies to take any such decision in future.
Battery fire extinguisher
Lithium-ion is used in manufacturing batteries. Despite of Lithium-ion’s benefits as a medium, it is also prone to catching fire easily. When a lithium-ion battery is charged quickly, it poses a possible problem. In cases where there is a manufacturing fault in the battery, the battery in turn may cause a short circuit also. This causes fire.
In order to cope with such incidents, developers have come up with the idea of adding a fire extinguishing element, contained in a shell, inside the battery. The reason for this isolation inside the battery is that, it does not cause any other problem to the performance of the batteries. In cases where the batteries are over charged, or get too hot for any reason, the shell would melt giving way to the fire extinguishing element to do its job. The element used for this purpose inside the shell is the tri-phenyl phosphate (TPP). TPP took only 0.4 seconds to extinguish battery fires during tests.