Why do phones and karaoke microphones have a high risk of explosion?

Backup battery is a useful device for people who use mobile phones, iPads or laptops. Recent information about the serious injury caused by the backup battery of the phone shows the disadvantages of this type of device.

All Lithium-ion batteries are good until many fires last time on Galaxy Note7 products and recently karaoke microphones, suddenly, they become potential dangers and what users need to do. to ensure safety?

In a new research sample published in the Journal of the Electrochemical Society, scientists from the Canadian Light Source (CLS) have decided what exactly happens will lead to a burnt Lithium-ion battery. explosive.

Researcher of energy storage and composite materials, Tony Bond said: "We are trying to understand what happens inside the battery when it produces gas and inflates like a" pillow ". This can happen for a variety of reasons, but it is often the result of a battery overheating, charging for too long , or for some other reason. Others even continue to work, but the swell of the battery may also be the first step to an explosion or fire. "

3D image inside a battery.

The team used a high-resolution CT scan to create a 3D image inside a battery before and after they caused it to produce gas and bulge to clarify the cause of the trigger. explosive.

Researchers have discovered small defects in the design of layered electrodes and these defects become more pronounced when the battery swells. This may affect what happens to the battery then, since heterogeneous swelling has changed the way the pressure is distributed inside the battery.

Tony Bond also said that there is no specific information that the bulge as a "pillow" of the Lithium-ion battery is the reason for the recent lithium-ion battery disaster, but research by CLS certainly clarified the major design error of the Lithium-ion battery.

"We took the first step in presenting what happens inside a typical commercial battery during bulging, and we hope that battery manufacturers can use this information. to better understand the operation of this process on a technical level , " Bond said.

Bond also said that if the consequences of these manufacturing defects are significant, companies may be able to make batteries safer by better controlling these errors, or changing the internal battery structure to Prevent development defects during battery bulge.

Therefore, the advice given is to be more cautious in shopping choices and absolutely say no to any battery-containing products of unknown origin. Also, when using a Lithium-ion battery product, it is necessary to use it properly, because the risk of fire or explosion will increase if the battery is exposed to hot conditions or the battery or an internal component is damaged.

A moderate fire with Lithium-ion battery core of unknown origin .

Of course, for the big brands, the rigor in production and the safety factor for the user is top priority and we are completely confident to use it. However, for unknown electronic products that use Lithium-ion battery cores, users need to consider shopping for use. For example, the karaoke microphone has just caused fire recently, the power of the battery is quite small but still creates a fire enough to burn down the house if we are subjective.

1. Avoid storing batteries at high temperatures .Do not keep the battery in a hot car.Do not put blankets on your laptop.Do not leave your mobile phone in a warm jacket pocket.
2. Avoid keeping all objects containing lithium ion batteries close to each other .When you travel, especially on an airplane, you are in the habit of putting all your electronics in one bag.This is unavoidable because they are essential for your work, but you can still leave battery containers far apart.Although keeping lithium ion batteries close together does not increase the risk of fire, but if there is a small accident, other batteries can catch fire and make the situation worse.
3. Avoid excessive battery charging.Although unlike rechargeable batteries, lithium batteries can "discharge" and recharge many times.However, it is not good to leave these batteries too "dry" before charging or charging too much.In addition, using any type of charger instead of a dedicated battery type may increase the risk of battery damage.