According to the Lanzhou Morning News, on June 19, at noon, Lanzhou’s local temperature was high. When a welding worker Xiao Jinpeng was wearing a mask, his cell phone in his chest pocket suddenly slammed, and Xiao Jinpeng fell in a pool of blood. In the middle, he was sent to the hospital and died after being rescued. It was only afterwards that it was the explosion of the cell phone battery that killed him. After the police investigated the scene and conducted an autopsy, it was initially believed that Xiao Jinpeng was blasted by the broken ribs due to the explosion of the mobile phone battery at high temperatures. The cell phone battery explosion is dead, and it is the first in the country.
Such a news is enough to touch all mobile phone users. As the most basic communication tool in contemporary society, mobile phones have been integrated into our lives. The latest statistics show that there are nearly 500 million mobile phones in China. It is precisely because the penetration rate of mobile phones is very high, so the problems related to mobile phones are also receiving much attention. Mobile phone users may be accidentally injured by the mobile phone they carry. Experts pointed out that in the summer high temperature situation, compared with the original battery, some cheap and low-quality fake batteries are even more prone to problems.
Cause of explosion
Three reasons for cell phone battery explosion
Borrowing experts’ opinions, there are roughly three reasons for battery explosion:
(1) The reason of the battery itself. Due to internal defects in the battery, the battery itself explodes without charging or discharging.
(2) The battery core has been overcharged for a long time. Lithium batteries may discharge a large amount of current in a special temperature, humidity, and poor contact conditions or circumstances, causing spontaneous combustion or explosion.
(3) Short circuit. This possibility is small. In addition, consumers may place their mobile phones near high temperature or flammable materials, which may also cause an explosion.
It seems that the poor quality of the fake battery makes our mobile phone into a grenade, then you have to be sure that your mobile phone must be the original battery? In the face of all kinds of batteries that are “high imitation” and “fine imitation”, are you sure to check out one by one?
The lithium battery we usually say is actually a lithium-ion battery that can be charged and belongs to a secondary battery. A lithium ion battery is composed of two compounds capable of reversibly intercalating and deintercalating lithium ions as a positive and negative electrode, and is composed of a positive electrode lithium compound, an intermediate electrolyte membrane, and a negative electrode carbon.
The operation of the lithium-ion battery is actually the transfer of lithium ions between the positive and negative electrodes. When the battery is charged, lithium ions are deintercalated from the positive electrode and embedded in the negative electrode, and when discharged, they are deintercalated from the negative electrode and enter the positive electrode.
The above describes the working principle of the lithium ion battery, and the main components constituting the lithium ion battery are two parts, one is a battery core, and the other is a charging protection circuit. As shown in the above figure, the battery cell contains a positive electrode lithium compound, an intermediate electrolyte membrane, and a negative electrode carbon. The battery cells are generally packaged, and the outside is like a container, and the inside is an electrolyte membrane, so that it can only explode. It is a battery.
These two main components account for the vast majority of battery costs, counterfeiters pursue high profits, batteries, circuits are able to save money, save the province, use the cheapest materials, poor batteries mean low capacity, low conversion efficiency, The voltage drops faster and there are some unstable factors. The protection circuit is directly related to the charging control. If the control is improper, the battery will overcharge and overheat. The charging explosion seems to be more common, but most of the mobile phones do not charge. Carrying it with you, so the safety accident caused by the charging explosion is not much, and it has not received enough attention.
In addition, the expert also said that most of the batteries are now packaged in soft aluminum film. When the temperature is too high, it may burn and catch fire, but the probability of explosion has been relatively reduced. The factors that cause battery explosion are diverse, and high temperature is indeed one of the killers. In high temperature, the battery stability is poor, the probability of problems is correspondingly increased, and the poor quality of the fake battery is more dangerous.
Consumer attitude towards fake batteries
Consumers are resentful of fakes. They are probably the direct victims of fakes, but can they distinguish fakes and how to buy mobile batteries? Mr. Liu, who works for IT companies, is very interested in mobile phone products, and he is also very concerned. The frequency of mobile phone replacement is about one and a half years old. It is quite representative among young consumers. Mr. Liu told us that he has always hated fakes. The fake mobile phone has a short standby time and its life span is affected. On the other hand, the fake battery is not practical, and it is afraid of an accident all day. What’s more important is that it is even more annoying to be bought by a profiteer without knowing it. It is more irritating to spend more money, and there is a feeling of being fooled.
However, for how to distinguish fakes, Mr. Liu admits that he is not clear, and now the types and quantities of fakes are already very much, and the emergence of high imitation goods makes it very difficult to distinguish between authenticity and counterfeiting.
The proliferation of fake batteries in Zhongguancun
At the beginning, Zhongguancun did not do mobile phone business. Zhongguancun is only a distribution center for IT products and digital products. However, the emergence of smart phones has transformed a group of merchants who are doing electronic dictionaries and handheld computers, and began to sell smart phones. At this time, the main source of supply is Parallel imports, because the smartphone itself is relatively small, and the price is high, so the small price is high at the time, the merchants rely on high profits, the days are very moist, and naturally there is no need to make fake batteries.
Strictly speaking, fakes have already appeared at this time, but the type is single, and the imitation technology is not very clever. In addition, most of the smartphones purchased at that time are enthusiasts, and they are good at it, even if they have fakes. come out. Merchants only steal a battery to find a profit when the customer bargains too much.
If you want to make more money, you need more money to turn around, but you don’t have enough money, which creates contradictions, so refurbished goods and counterfeit accessories have become a magic weapon for them to make money. At the same time, the consumer groups of Zhongguancun mobile phones have also changed. From a small number of enthusiasts and players to a large number of mass consumers, the technology of fake imitation is even more prosperous, “high imitation”, “fine imitation” “, super fine imitation”, only literally, we can feel the level of today’s fraud.
Originally, this market lacked norms. Under disorderly competition, we have to say that fake batteries have already flooded in Zhongguancun.
Merchant attitude towards fake batteries
The survey shows that it is difficult to find genuine batteries in the counters selling mobile phones in Zhongguancun.
Isn’t the battery that Zhongguancun sells for mobile phones is not genuine?
Mr. Li: “No, the newly listed mobile phones will probably not match this kind of battery. After all, the profits are placed there. This kind of machine does not have to fight for 50 yuan. Everyone still has money to earn, so these machines There are more original electrics, and other accessories are also original, very complete. Only some mobile phones that have passed the hot market and some old models have more fake batteries. To put it bluntly, everyone is rotten. Mobile phones, mobile phones that make less money.”
Since the high imitation battery is flooding now, can you tell the exact difference?
Mr. Li smiled and said: “No, I can’t tell 100% accurately. For those who sell mobile phones, whether it is general sales or the boss, you ask, who can they boast about this seaport?” We asked immediately One of the sales around, sales smiles, can not tell by her own, most of the time I still ask others or ask the boss. The boss said that it is genuine and tells the customer that it is genuine.
Advice and advice to mobile phone users
Lanzhou mobile phone users died because of the explosion of mobile phones, but it can not but cause a lot of vigilance for many mobile phone users, because the survey results show that Beijing Zhongguancun, such as mobile phones, non-original batteries have been flooded, and mobile phone fake batteries in other parts of the country are also very serious. Just as the summer season, the weather is hot, the possibility of cell phone battery explosion is greatly increased, it must be prevented. Therefore, carry a mobile phone away from high temperature environment, for example, forgetting the mobile phone in the car, the sun exposure time is too long to explode, and also to avoid placing the phone in the jacket pocket. Maybe it’s safer to put your phone in your bag. For the explosion of mobile phones, consumers must not guard against it.related articles http://ts80hou.com/en/buy china mobile.html