Mobile power black at the end of the industrial chain: the three levels of the explosion hazard, you build it?

You may not know, carrying mobile power around you, there may be a "mobile bomb".

In the power industry, substandard or inferior products exploded wounding capacity negative events occur. The source of these problems, often associated with the cell.

Quality watchdog in August this year, launched a mobile power supply product quality safety risk monitoring, alarming results. The test sample 32 batches of products, a total of 224 samples, and 32 batches of products quality and safety risks there are. Which, 9 batch products electric core weights impact test not meet, exists occurred internal short-circuit Shi fire explosion of risk; 28 batch products output electrical performance test not meet, exists damage was charging equipment of risk; 20 batch products shell material combustible test not meet, exists cannot on electric core fire for flame retardant of risk; 17 batch products electric core 0.2ItA discharge test not meet, exists capacity virtual standard problem.

Hua Qiang bei in Shenzhen markets, openly selling fake mobile power products is widespread, many stalls selling mobile power using standard batteries. The proliferation of fake goods, will not only make the product dangerous increases pain of mobile power industry restructuring in recent years. Mobile power industry is in a phase of rapid development at present need to be reorganized.

Cottage with huge profits

Mobile power supply mainly depends on the quality of its batteries. Industrial media once more, the survey found, the current mobile power market is flooded with a lot of "foreign garbage". Such as the use of "foreign garbage" making mobile power batteries, limited number of uses, low conversion efficiency, capacity, mobile power supply is short life, recharging instability, failure rates too high.

Now, this product in huaqiang North, commercial tenants, there are still many. In the IT market, Hua Qiang bei, various Samsung, millet and other LOGO's mobile power market is flooded with almost every counter will put some of my sample full-filled façade.

In addition to the finished product, most parts stores also sell mobile power core components-batteries.

Hardware, mobile power consist of housing, circuit boards and batteries is composed of three parts. Batteries accounted for more than 70% of the cost, while 20% is part of the circuit board. Mobile power supply battery type before are only two, one for normal 18650 lithium batteries, a lithium polymer battery.

Currently sold on the market of mobile power, bigger is generally use a 18650 batteries. 10400mAh in millet's mobile power products, used to be 4 section 18650 batteries. That is, a cell capacity is about 2600mAh.

But in the accessories market, Hua Qiang bei, 18650 batteries capacity is not the same, minimum 1200mAh section, but distinguish between them only from the outside. Knockoffs of the counterfeit products are generally only 1200 mAh batteries manufactured using this capacity, even small 1300 Ma. Market personnel for all the battery capacity.

"Normally 1200-2200 (refers to a cell's volume), can give you 1.2 section with the lowest price. If you want a larger volume of there, but it needs, but now the market power of 2000 (volume) has been good. ”

A capacity of 2000 mAh battery, the ex-factory price of 6 Yuan; a 1800 mAh capacity battery, ex-factory price of 5 Yuan; 1200-1600 mAh capacity battery, the ex-factory price is only 3; capacity to lower prices of batteries only 2 Yuan, or even lower.

Each appliance has its own selection of core enterprises equipment, qualified batteries can be filtered out, Enterprise set a standard value, and products that meet the specifications of the capacity of each section in a standard size of ± 50 Ma range, these standard products known as an a-grade product. Under the class a, class b, class c, class d, and several grades, these grades are defective.

"For regular destruction of defective way, should be returned to their core suppliers of raw materials, materials, defective batteries can be dismantled, to extract useful metals, as new raw material in the production of new batteries. ”

But even the big battery companies, can do such rules and procedures and rarely, the imperfection of every enterprise to buy sold out again, which has formed a complete industrial chain. This is also the main cause of low capacity batteries on the market flooded with.

"Why so cheap, is that most of the bad quality of the batteries is low by acquiring foreign garbage processing, others inferior products on the production line, because for various reasons such as destruction costs, sold at a very low price to making fake or counterfeit branded mobile power business. ”

Three levels of potential explosion hazard

In addition to virtual capacity issues, consumers worry about the most is the power of explosion hazard. In recent years, the mobile power burning events occur frequently in public places.

Last May, the Airport South of Guangzhou metro station discarded lithium battery ignition, smoke filled, caused once more over in March of this year, Guangzhou Metro Line 6 line train bound for blue, a passenger mobile power suddenly goes up in smoke, resulting in a large number of passengers hastily fled.

In China, mobile power supply battery, battery management system and the case has security implications.

In the structure of power, a security barrier with 3. First is the cell's own protection. Well the battery itself has a safety valve, has short circuit cases, even the battery red not to be burned. Second, management system, or circuit boards, it's a step-up and step-down module, you can adjust the voltage. Third, shell, involved assembling, positive and negative welding.

First of all, constitutes a mobile power supply the main part is batteries. Batteries for safety hazards including: leaking, bulging, combustion and explosion.

In batteries, heavy impact tests in the General Administration of quality supervision, 32 batches 6 batches of fire explosion in the mobile power. If consumers are free to use mobile power, making it suffer squeeze, acupuncture and external shocks such as heavy impact, it may cause an internal short circuit, fire and explosion to occur.

Addition to other batteries, circuit boards are also second key parts of the mobile power. Construction of the battery and circuit board although it is a very small part, which cost just 10 Yuan, accounting for mobile power supply total cost only 10% to 15%, but the shift in power is very important. Among them, there is a protection IC, cost only 1-2, and Pressor and depressor module for short circuit module, is a key component to ensure mobile power supply security.

AQSIQ in the previous test, test the output voltage of power, results showed 32 batches of samples of mobile power "output electrical performance" test only 3 batches met the requirements. And the output voltage is too high will cause the user to the mobile device charging, mobile power supply burnt out. AQSIQ tests show that some mobile power supply voltage of up to more than 10 volts. Some bad mobile power in order to save the cost of 1-2 Yuan, there is no protecting IC components.

Finally, casing and Assembly process. Currently the sales charge treasure shell consists of both plastic and metal, plastic shells of which accounted for more than 3/4. The monitor 32 batch charging Bao plastic casing flame resistance tests, only 5 batches to meet the requirements, that is to say, most charging treasure once the batteries caught fire, these plastic shells cannot be effective flame retardants. In addition, some small cottage factories in positive and negative welding is very rough, this can lead to accidents.

Or copy the cold wave in mobile phones

Mobile power industry entry threshold low, poor product quality, competition, there is no national standard for the entire industry to specification is a big reason. Some large manufacturers had reference to lithium-ion batteries GB GB set up their own businesses, such as standards, ensure the quality of their products. But due to too many copycat products, many manufacturers profits are too thin, unable to survive.

Mobile power supply chain as a whole, only upstream of the batteries is the most professional. Because batteries industry investment is in the tens of millions of Yuan into the technical and financial barriers are very high, so business is a large manufacturer. But moving downstream of the power supply Assembly links, enterprise level varied widely, large professional enterprises, small family workshops have, put the price gap is very large. Large enterprise products at much higher than pirated goods, whose living space was nibbling.

Therefore, with the increasingly fierce competition, perhaps next year, mobile power industry might be like, Hua Qiang bei 2011-2012 cottage industries.

In 2011, the cottage after the market reached a peak, the growth rate has slowed down considerably because of due to multiple factors. At the time, in the famous SEG Plaza, huaqiang North, many counters selling knockoffs have hung up "over the counter transfer" sign.

By the beginning of 2012, in the market, huaqiang North, cottage in the bottom of the "three-code" (fake phones codes directly cottage) manufacturers, leaving dozens of homes still in operation, while a year ago, also has thousands of scale here, once the cottage industry insiders said.

"As the consumer attitudes gradually change, branded mobile phone prices, involved in intellectual property disputes and the Government may be shanzhai electronic products-bashing, cottage industry from popular exception is facing difficulties. ”

Today, the mobile power seems to be taking a cottage road.

At present most market operators, Hua Qiang bei, just electronic professional markets as commercial property management, and from the idea was not on the height of producer services to understand the electronic professional markets.

Meanwhile, Hua Qiang bei individual shopping centres in most of the businesses are still insisting on offline mode of operation, and fighting each other.

When e-commerce continue to impact traditional industries, huaqiang North, shopping the business nature of many small and medium businesses under pressure from the line, some businesses began to Taobao e-commerce platform to set up their own online sales system. However, due to serious shopping businesses long-term product homogeneity, and rely on the concept of price management and the operators of online sales are not satisfactory.