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As a pioneer of fashion in recent years, digital product, the U.S. Apple's iPhone, had been widely laptop battery sought after, but this year in August, States spate of iPhone "blast door", "cracked screen door" event, to these cutting-edge electronic products cast a Shadow - or even bankruptcy is a small matter can not afford life ah!
According to "Scientific American" website reported August 19, the EU Consumer Product Safety Commission announced the establishment of a panel to investigate the time recently occurred in more than iPhone explosions. The culprit of these events - lithium-ion batteries overheating caused by security problems, has aroused attention.

At 3:00 on August 24, 26-year-old French supermarket security Jassoud li Buadi are using their own 3 months ago to buy the iPhone send text messages, "Suddenly, the screen exploded!" Buadi eyes were a piece of broken glass scratch, he angrily made to Apple's claims.

Buadi an iPhone is not the only victims of the bombing Pavilion DV4000(hp dv4000 battery). Earlier this month, southern France, a 18-year-old's iPhone "issued by squeak and burst," which juvenile eye injury; Paris suburb of a 80-year-old's iPhone mobile phone display a burst in his hands. According to French media, statistics, recently have been 10 French consumers to report their iPhone mobile phone display an explosion or rupture. Incident also occurred in the Netherlands, a man will leave iPhone in the car and returned to find iPhone has ignited the fire burned beyond recognition by the Deputy driver's seat.

Occurred with the previous iPod, laptop computer, cell phone explosion is similar to Europe in the multiple bombings in iPhone, but also from the past 10 years has become a mainstream digital products lithium batteries overheating caused by the battery.

In March 1976, the U.S. oil company Exxon engineers Whittingham created the first prototype lithium batteries - he used titanium sulfide as an anode, lithium metal as cathode, rely on lithium-ion in the "positive - negative - positive," movement between the formation of current, complete charge - discharge process. Lithium batteries in energy density, the degree of self-discharge of the indicators are much better than those for other rechargeable batteries, giving rise to the scientific community and business R & D boom. 80s of last century, people are constantly improving lithium batteries, such as the use of lithium-containing compounds as cathode, carbon materials as anode, making it smaller and more energy density, running more stable, cheaper, lithium battery so gradually to become the mainstream of PM579A rechargeable batteries, in particular, is reflected in the portable electronic devices, and even has been used to power electric vehicles.

Planting the seeds of electrolyte "missile"

According to the U.S. well-known science writer series of articles in the lithium batteries in the introduction, the vast majority of lithium battery explosion caused by a short circuit, and the specific reasons, including charging overvoltage / over-current use of aging.

Lithium battery manufacturing process, because the manufacturing process itself flawed, it is easy to be insulated in this between the two poles, leaving metal dust, copper foil, aluminum foil pieces. The angle is expected in the battery than the fever (more common in long-term use or charging), the like boiling water in a grain of rice, as in the electrolyte to make random thermal motion. If you happen to have the battery positive and negative particles or 367759-001 debris near the middle of the diaphragm level, it could create a divide perforation, triggering micro-short circuit. As the batteries are flammable organic electrolytes, micro-short-circuit may cause an explosion, burning and other accidents, generally have the following three cases:

1. Sparks ignited the electrolyte, and thus bring disaster to come into contact with plastic body and flammable, resulting in fire;

2. Was experiencing an increase of temperature caused by the battery, the battery inside the space is small, perhaps because of increased pressure to explode;

3. Slow temperature rise inside the battery, the battery case to melt gradually, so that corrosive electrolyte leakage.

Lithium battery safety problems can not stop now, because then the advanced manufacturing technology, will inevitably lead to planting the seeds in the electrolyte "missile." Should be noted that the formal sector of lithium battery production and sales have strict norms of acceptable quality lithium batteries, the number and size of debris have been controlled within PF723A a small, very low risk of perforation of diaphragm; batteries outside the Shell also used flame-retardant material, is not prone to fire.

The explosion-proof lithium battery of measures

Lithium battery safety problems, the battery manufacturer, of course well aware, then what they used explosion-proof measures? Li-ion batteries for notebook computers, for example, its working principle is: Lithium batteries near full charge and discharge almost drained when the voltage drop, the control circuit detects this situation, notify the protection circuit cut off power supply to prevent overcharge or excessive discharge, so as not to shorten battery life.

The current Pavilion DV1000(hp dv1000 battery) notebook lithium batteries possess a more complete multi-level protection mechanism, even in the power charger, notebook computers unusual circumstances, the laptop battery can also be converted to automatic protection status, is generally not an explosion. But once the control circuit and protection circuit of the ability to work reduced hours, the battery on the verge of "dangerous" the. Mobile phones and other electronic products, lithium battery charge and discharge protection mechanisms, similar to this.

Do not need it "at arm's length"

In recent years, lithium-ion electronic products explosions often found newspapers, aroused a lot of consumer panic, some people for their own mobile phones, MP3 charging often "at arm's length"; also because of fear, simply a long-term will be cast aside laptop battery, cause scrap. However, survey results, the majority of lithium battery explosions are the result of the user pay attention to safety tips, such as unauthorized modification, use of non-matching charger, the battery placed in extreme environments such as making.

Should be pointed out that the lithium battery technology as a kind of after 30 years of study, has successfully commercialized the mature technology, its safety Pavilion ZV6000(hp zv6000 battery) is guaranteed. Regular brands of lithium batteries at the factory will have been numerous Road test procedure after they are sold as well as information feedback mechanism in order to recall the product in question in time.

United States Transportation Security Administration (TSA) is given following the recommendations of the safe use of lithium batteries:

1. Use original charger: Li-ion battery charging time is the high period of bombing. Than the original battery charger is compatible with the battery charger to ensure better security.

2. The use of reliable battery: try to buy original batteries, not to save money to buy "second-hand goods" or "parallel imports" through the maintenance of these batteries may be better original battery reliability.

3. Do not place the battery extreme environments: high temperature Pavilion ZV5000(hp zv5000 battery), collisions, etc. are all important causes of battery explosion, as far as possible so that the battery is in a stable environment, away from the high-temperature areas.

4. Do not try to modification: Many young people like their phones to "cosmetic", but it was "bold but cautious" manner to transform mobile phone on their own. However, it can easily lead to improper modification accident. Mobile phone is a sophisticated communications equipment, in the design, manufacturers will have on its security, strictly textual research. After modification, the battery may be at not taking into account the environment before, an increase of security risks.