The murder cases caused by telephone chargers have not happened once or twice. Due to the huge supply of telephone chargers in the world, accidents are inevitable. But most of the time, the explosion of the telephone charger is caused by our improper operation. The photo taken by my father and his daughter who died of the telephone charger rings the alarm bell for us. At the same time, the father's behavior of drying photos of his dead daughter has aroused heated discussion.
Last night, wechat circle of friends was filled with a piece of information, which was very sad and should not have happened. Unfortunately, a little girl died of a phone charger. The reason was that the adult didn't pull out the plug of the charger in time after charging. The little girl picked up the other end of the charger and put it in her mouth. Unfortunately, she was electrocuted and died.
The content of the photo is very frightening. The little girl's face is pale, her mouth is slightly open, and her father's eyes are full of sadness. Many netizens call the photo taken by father and daughter who died in the phone charger "a warning of sadness".
But some timid netizens said they couldn't sleep after watching it. The father was sad, but he didn't take such a bluff.
However, if the phone charger is used improperly, there are potential safety hazards. Let's take stock of the murder case caused by the phone charger and tell you how to use the phone charger correctly.
10-year-old boy's death rhythm
Yili Xinhua Hospital in Yining City, a staff member of the hospital's party office said that on the evening of November 18, the hospital did admit a patient injured by the explosion, but the explosion was not caused by playing with the mobile phone while charging. Out of curiosity, the patient butted the exposed wires with the positive and negative poles of the removed mobile phone battery and connected the power supply, with the intention of charging the battery, causing the explosion , resulting in injury.
'the patient is a 10-year-old boy who is now receiving treatment in the Department of orthopedics. In case of such trauma, the hospital usually takes pictures to keep the bottom. At that time, a nurse used a mobile phone to take pictures of the wound to remind a friend, processed the pictures and sent them to wechat, without indicating the hospital and patient information. After continuous forwarding by netizens, some netizens restored the pictures and published the information of hospitals and patients. '
Stewardess died of phone charger
On the evening of July 11, 2013, she made a phone call while charging with the genuine iPhone 5, which she had bought for less than a year. Suddenly, a strong current turned her off & hellip; & hellip; and left her bridegroom forever! She was only 23 years old! On July 13, the microblog of stewardess network quickly made Netizens feel sad. The stewardess' sister '@ m Xiaojing tweeted in the early morning of 1128'13 that her sister answered the phone with her iPhone 5, which was charging. She was suddenly electrified and died. The microblog also said that the stewardess did not answer the phone after taking a bath as rumored.
Airline stewardess registered residence in Xinjiang airline stewardess in July 16th. A person in charge of the police station in Changji oasis in Xinjiang confirmed that the content of the flight was true. Indeed, a flight attendant was killed by electric shock.
Q: why do many mobile phones explode when charging?
A: first of all, it's certain that there are some cases of mobile phones burning, exploding and even causing users to get electrocuted when charging, although it's not common. The reasons are complex and diverse. Let's analyze them.
First of all, the maximum output voltage of a general mobile phone charger is 3.7v-5v, and the AC voltage is 220V. A transformer and low-voltage power supply elements will be designed in the charger, and the AC will be converted into low-voltage power and then transmitted to the mobile phone. The charger also has a short-circuit protection design (add resistance), to prevent the voltage is too high, transmission current is too large. In addition, the circuit part of the mobile phone also has overload protection to ensure the battery life, which is why the mobile phone will not continue to charge after it is fully charged.
The current of mobile phone charging is generally less than 1mA
When using the mobile phone when charging, the input current will change. Generally speaking, when charging and standby, the current is 1mA or even lower. Making phone calls or playing games will improve, but they are all within the range of the human body. Of course, strictly speaking, they are not good for health.
Counterfeit chargers usually lack short circuit protection
So, why do people overheat or catch fire when they play with a mobile phone while charging? It may be a charger failure or design defect. There is no overload and short circuit protection. When the transformer fails, the AC voltage is directly input, resulting in excessive current and cell phone breakdown. If the overload protection design of the mobile phone is good, the battery quality is good and the design is reasonable, it will only break through the charging port of the mobile phone at most, because the insulator of the overload protection has blocked the input current.
Of course, the failure or poor quality of the battery itself may also lead to a fire, but the probability is smaller than that of the charger. It is usually caused by some external factors, such as too high temperature. However, if the circuit design of the mobile phone is reasonable, when the high current cannot reach the battery, it will be cut off by the protection system, and the battery itself will not catch fire.
Obviously, whether it is apple, Samsung or durable Nokia, there have been cases of mobile phone fire and explosion, but most of them come from the above reasons, that is, users use non original charging accessories. If it's the responsibility of the manufacturer, it can only be said that it's bad luck to buy products with poor quality control, but basically the probability of this happening is one in tens of millions. But in other words, since there is no absolute solution, we should try not to operate with too much load when charging, which is the safest way. At the same time, we must pay attention to the use of original accessories, in order to minimize the potential safety hazards.