Charging treasure in the air why not check?

Qingming Festival approaching, Shenzhen airport ushered in the peak passenger flow. Civil aviation sector regulations, charging treasure can not be checked, but you can carry. However, the reporter found that some passengers do not understand the relevant provisions of the civil aviation sector, resulting in almost missed the machine when the situation occurs. Why charging treasure can carry, but not allowed to check it? Evening living laboratory for you to answer in detail.

Doubts

With the popularity of smart phones, tablet PCs, charging treasure has become a necessity". However, there are many provisions with charging treasure on the plane. In August 2014, the Civil Aviation Bureau issued "on the civil aviation passengers carrying charge treasure provides the opportunity to notice" for the first time, with special emphasis on the relevant provisions of the civil aviation passengers carrying charge treasure the opportunity, and the special emphasis on the risk of charging treasure. "Notice" shows that in the future, passengers on the plane, only can carry on the charging treasure rated energy less than 160 watt hours, charging treasure belonging to the "three noes" products will be prohibited, and strictly prohibit shipment charge treasure.

Why the aircraft will have so many restrictions on charging treasure? It is understood that charging treasure is actually a lithium battery, prone to spontaneous combustion. A few years ago, there have been too many domestic and foreign passengers on the flight flight on the way to check the case of lithium battery smoke fire. A civil aviation industry, said: "the plane in charge of charging and other goods bump bump, it is prone to this problem."

Experiment

Charging treasure hit, really smoke fire? Recently, a CCTV video recording quite interesting. In the video, with a piece of iron from high hit on the charge treasure, charging treasure by the external impact simulation of the situation in the transport process. Iron fall, charging treasure shell was smashed, shell cracks out of the flames. In the puncture failure experiment, with a soldering iron through charging treasure, also found the fire.

Charging treasure is the most critical part of the energy storage battery core, which is mainly composed of lithium polymer battery. He Penglin, deputy director of the China Institute of electronic technology standardization laboratory safety, charging treasure security issues are mainly caused by its internal lithium battery. It is understood that the portable lithium battery GB31241-2014 new national standard has been officially implemented in August 1st last year, the standard is the national mandatory standards, requirements for charging treasure qualified in acceleration shock, impact, drop and extrusion experiments should not fire and explosion.

principle

Prior to this, the living laboratory has been on the safety of lithium batteries have been related experiments. When the lithium battery shell is destroyed, the chemical reaction in the battery leads to the rapid bulging of the battery shell, and constantly out of white smoke.

Lithium battery heating or combustion is mainly caused by the short circuit and excessive current, for the mobile phone, charging and discharging current is too large. And let the lithium battery short-circuit factors are many, including physical damage, the use of the environment temperature and positive and negative poles of the three cases of short circuit. Under normal circumstances, the internal electrolyte containing lithium battery is sealed, no reaction. But when the lithium battery is damaged, the electrolyte meets the air or water, it will produce a chemical reaction to produce gas and heat. When the reaction is violent, it will explode.

Prompt

Beijing Southern Airlines to serve the domestic customer service department director Huang Hongjun introduction, although the charging treasure can carry, but if the charging treasure rated energy exceeded, is not allowed to bring the aircraft. He explained that the rated power is not marked on the battery charging treasure capacity can be calculated based on a formula.

Rated energy = nominal voltage

A nominal capacity of 10400 MAH (10.4 ah), nominal voltage of 3.6 volts charging treasure rated energy is 37.44 kwh. Huang Hongjun introduced, according to the civil aviation sector regulations, when charging treasure rated energy is less than 100 hours, is not limited to the number, you can carry. If the charging treasure rated energy of more than 100 kwh, less than 160 hours, you need to confirm the airline to release, each person can only take up to two. If the relevant logo on the charging treasure is not clear or no identification, it is not allowed to carry. Huang Jun also reminded that the current more popular electric balance car because of its power supply is a lithium battery, the airline is not allowed to carry or carry.