Why is lithium-ion battery "blocked" by special industry?

With increasing demand for lithium-ion batteries, it is now almost size half of the battery industry, and has been widely used in mobile phones, notebook computers, digital cameras, electric vehicles and so no.

However, Lithium-ion battery air shipping business will completely blocked! Therefore, those who prepare Haitao a mobile electronic product and return to China by air are still provincial!

Lithium-ion battery air consignment business was completely blocked

According to Agence France-Presse reported on February 23, the International Civil Aviation Organization (ICAO) issued a temporary ban, in view of the possible fires caused by lithium batteries, from April 1 this year, all rechargeable lithium batteries will banned from being checked by passenger aircraft. This ban will last at least until 2018.

The report quoted ICAO President Olumuywa Elu as saying that the ban will strictly enforced and that ICAO will design a new solution for the packaging and transportation of lithium batteries.

Although the ICAO ban does not have the effect of binding legal force, most countries choose to comply. According to ICAO, many pilots have long requested to stop the flight of lithium batteries, and most airlines have long since stopped the shipment of lithium batteries.

Why are lithium batteries "blocked" by the special industry?

The risks associated with the transportation of lithium batteries, especially on aircraft, are also increasing. Since introduction of market, there have been many incidents involving air transport related incidents, as well as many incidents unrelated to the transportation of lithium batteries and lithium batteries as power supplies. These incidents involve both passenger and cargo aircraft, both in flight and before and after unloading. Some incidents have involved fires on aircraft and in some cases led to emergency landings.

For example, in 2013, there were two flight accidents caused by overheating of lithium batteries. The first incident occurred on a Boeing 787 aircraft docked in London. Another Lithium-ion battery accident caused the Japanese ANA plane to forced to land in an emergency.

Lithium-ion battery is as big as "fire"

According to Zhang Hao, an associate researcher at the Special Chemical Power Research and Development Center, a Lithium-ion battery is a battery containing lithium (including lithium metal, lithium alloy, lithium ion, lithium polymer) in an electrochemical system. It mainly includes two types of lithium primary batteries and lithium ion batteries. The lithium primary battery contains lithium metal, which generally used for one-time use and cannot charged.

More commonly used today are lithium-ion batteries. Both mobile phones and laptops use lithium-ion batteries. Zhang Hao said that the negative active material of lithium ion battery is made of carbon material, and the positive active material is lithium-containing compound. The charging and discharging process is the process of lithium ion intercalation and deintercalation.

"But when lithium-ion batteries are charged, there is a potential safety hazard." Zhang Hao said, "The uneven deposition of lithium metal on the negative electrode or the unevenness of lithium ion-intercalated carbon material may form dendritic lithium branch crystals on the surface of the negative electrode. Excessive After charging, the positive and negative poles of the battery will connected by lithium dendrites to form a short circuit, causing the battery to radiate a large amount of heat instantaneously, which may cause fire or even explosion. In 1989, the fire of lithium/manganese dioxide battery caused most enterprises to stop the battery. Development of the system."

If the Lithium-ion battery directly checked into the baggage, because the space of the bag in the warehouse is relatively small, it is easy to bumped or squeezed, which increases the unsafe hidden danger of the flight. China Southern Airlines has completely banned passengers from carrying or consigning electric balance vehicles powered by lithium batteries. China Southern Airlines said that due to the high energy of the electric balance car Lithium-ion battery, and most of the equipment Lithium-ion battery energy signs do not meet the requirements, the international feedback on the occurrence of such a balance of poor quality lithium batteries in the car fire and explosion.

The "blocking" of this time is precisely because the dangerous goods expert group has carried out a comprehensive assessment of the risks brought by air transport lithium-ion batteries, and actively strive to reduce this risk. Experts believe that clear and sound regulatory requirements, outbound links with affected industries and efforts to strengthen compliance are key to reducing the likelihood of future accidents.

Can I bring mobile electronic devices by plane?

Regarding the air cargo transportation of lithium batteries, the controversy in the industry has continued for many years. Previously, the US Federal Special Administration had issued a notice to airlines warning them not to carry large quantities of lithium batteries.

According to data from the International Air Transport Association, as of July 1 last year, nearly 30 airlines including Delta Air Lines, British Airways, Cathay Pacific, Singapore Airlines, etc. implemented a permanent or temporary high-capacity Lithium-ion battery-shipping ban on passenger aircraft consignments. Some airlines' cargo services have also stopped accepting large-capacity Lithium-ion battery shipments. Since last March, the Civil Special Administration of China has promoted the safety level of air transportation of Lithium-ion battery cargoes, stipulating that in the future, the use of passenger aircraft to transport separately packaged Lithium-ion battery cargo will prohibited unless it exempted from the state.

However, passengers do not worry too much about this requirement, because lithium-ion batteries in most portable electronic devices usually do not exceed the standard, and passengers can still carry lithium-ion batteries and portable electronic devices containing lithium batteries. ICAO has always stated that lithium batteries must with baggage; but if we carry it by ourselves, it much safer and can detect and dispose of in case of danger condition.

The page contains the contents of the machine translation.