Airport security check with some common sense of battery products such as charging treasure

Recently, a charging explosion occurred on the security check-up channel of Xi'an Xianyang International Airport. At 7 o'clock in the morning, the charging treasure in a man's suitcase at the airport's security checkpoint was smoked when it passed the security check, and an explosion occurred. According to the monitoring, when a middle-aged man passed the security inspection channel, he just opened his black suitcase and was ready for security inspection. The smoke appeared inside, and the smoke came from under the clothes in the box, and then it happened. The explosion.
In recent years, there have been a lot of news about the self-ignition and self-destruction of "Charging Po". The safety of charging treasure has also attracted more and more people's attention, so the charging treasure will explode? Is the airport security check that all charging treasures cannot be taken on board? How should consumers buy a reliable charging treasure?
Will the charging treasure explode?
Experts believe that the safety hazards of “Charging Po” mainly come from two aspects: one is the quality problem of the product itself, and the other is the unreasonable use habits of consumers, making it an “untimed bomb.”

1. Lithium-ion batteries may exhibit "dendritic phenomena" during overcharging and discharging. “The dendrites will pierce the positive and negative diaphragms, causing a short circuit in charge, which will burn the battery and cause a fire.”
2. The mobile power inverter is not off, and the current that enters the "charging treasure" when charging is too big and small. This is also very dangerous. Once the high temperature is generated and the power supply itself lacks high temperature protection, an accident will occur.
3. The friction between the USB interface copper on the mobile power supply and other metal objects may also cause spontaneous combustion.

The Civil Aviation Administration stipulates that the lithium battery is strictly prohibited. The charging treasure is a lithium battery polymer storage device. It has a charging plug, which can directly charge the mobile device through the AC power source, and can store the power itself, which is equivalent to a mixture of the charger and the backup battery. .
Since lithium is an unstable metal, lithium batteries can easily cause spontaneous combustion after being exposed to heat in a high-altitude environment. Therefore, ICAO has always stipulated that lithium batteries should be carried as carry-on baggage; if the lithium battery is directly placed in the baggage, it is checked. Baggage is easily squeezed or collided in a small cargo space, increasing the risk factor of navigation.
The Civil Aviation Administration issued the "Notice on Doing a Good Job in the Safety Management of Passengers Carrying Lithium Batteries", clearly requiring lithium battery mobile power (charging treasure) to be carried out in accordance with the relevant provisions of the standby lithium battery, that is, it is strictly forbidden to put checked baggage, only portable Carry the machine. At the same time, passengers are not allowed to use the lithium battery mobile power (charging treasure) to charge the electronic device during the flight. For lithium battery mobile power (charging treasure) with start switch, make sure it is always off during flight.
Isn't all the charging treasures not allowed to take the plane?
The airport security check is the same as the lithium battery for the portable mobile power supply. The portable mobile power supply does not allow air transportation. The rated energy of the lithium battery is greater than 100Wh and less than 160Wh. It is required to apply to the airline or report to the airport check-in counter in advance. .
It can only be carried if it is allowed to meet the safety conditions and the protective measures, and the spare lithium battery should not be carried more than two. Portable mobile power supplies with a rated energy greater than 160Wh or without any markings will not be allowed to board the aircraft.
What does 160Wh mean?
According to the formula of the rated energy value, the charging capacity of 20,000 mAh is 4 volts, the rated energy value is 20000 mA × 4 volts = 80 watt hours, less than 100 watt hours, in line with the regulations of the Civil Aviation Administration. However, if it is a 50,000 mAh charging battery with a voltage of 5 volts, it must be approved by the airline to bring the aircraft.
How to judge whether the charging treasure has exceeded the standard?
Want to know how much capacity your charging treasure is, whether there is any excess, there are two ways:
Method 1: Most of the lithium-ion battery nameplates directly indicate the rated capacity (unit Wh, read as "Watt")
Method 2: Some lithium-ion battery nameplates do not directly indicate the rated capacity and need to be converted.
Charging treasure rated energy calculation method Charging treasure rated energy (Wh) = rated voltage (V) × rated capacity (mAh) / 1000 or Wh = V × Ah

Consumers how to buy a reliable charging treasure industry insiders pointed out that the purchase of "charging treasure", consumers should pay attention to three aspects.

1. Is to understand the quality of the battery. When many merchants recommend "Charging Po" to consumers, they always use the capacity "on heroes", and the price is also based on capacity. The capacity of the mobile power supply is only one of the parameters, and the quality of the battery used in the "charging treasure" is more critical. At present, mobile power batteries generally use two types of lithium ion batteries and lithium polymer batteries. **Select a battery with a polymer battery that is safer and has a relatively long life.
2. It is to reject the "three no" products. The 3C-certified power adapter can meet the national mandatory standards in all performances, and the safety is more secure. Genuine "Charging Po" is affixed with "anti-counterfeit stickers", which can be verified on the relevant official website. Consumers should see 3C certification, production date, manufacturer information and other information.
3. Is asking for a formal invoice.