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China's new energy vehicles brought a wave of enthusiasm, is making mobile communications and mobile had a tremendous convenience of audio-visual aspects of lithium adapter for laptopbatteries to become the most popular competition and one of the concerns.

However, when more people in the life mileage, battery life and even how to deal with waste batteries and so their brains, a very important fundamental problem seems to have been neglected, that is - it is enough to secure

March 1978, served in the United States Exxon chemist (engineer) invented Stanley • Weitinghanmu lithium battery, probably did not think the next 30 years, the invention of science and technology to human life tremendous change, lithium, the lightest metal known from the natural world has become more intimate and human together.

At that time, Weitinghanmu sulfur compounds to do the titanium anode, lithium metal as anode, made of the world's first prototype of a lithium battery.

It works by lithium-ion battery positive and negative formed between the current cycle of movement in order to achieve charge and discharge process. Therefore, lithium batteries, also known as lithium-ion batteries.

Few decades, through constant improvements to the anode and cathode materials, smaller and more energy density of lithium batteries, as well as lower prices have been manufactured, the hp Pavilion dv2000 battery ， hp Pavilion dv6000 battery advent of mobile phones, to further promote its miniaturization and lightweight, and later Also popular at the micro-electronic products, such as music players, today is even considered as a wave of strong electric cars inevitable choice.

However, in recent years, mobile phones and music player's battery frequent explosions, it seems that again sounded the alarm - this has brought convenience to people's lives are not imaginary things that seem less secure. Relaxation of the manufacturer quality control it? R & D are some elements of the battery changed? Or are they reserve power and neglects the importance of security?

A cell phone lithium battery contains lithium metal less than 5g, one of the most original electric mini-cars, if the rechargeable batteries 30kwh above, the battery contains lithium metal is about 50kg or so, cell phone batteries will cause the explosion is still scared of, a group of mini-cars In case the battery if it occurs, the consequences would be inconceivable.

China has occurred in lithium batteries installed in electric vehicles, the parking in the garage at night suddenly caught fire, together with the vehicle reduced to ashes along with the situation, a few months ago there have been spontaneous combustion phenomenon of hybrid buses, but the discovery and Disposal early, before major damage is not brewing. Obviously, contingency planning is the battery, electric vehicle industry's responsibility.

In fact, the lithium battery there is an explosion potential safety problems, many reasons to be cracked, but apparently all the constituent elements of its own can not avoid implication.

Is usually a lithium battery cathode, anode, diaphragm, electrolyte, monomer packing five major elements. At that time, Sony developed the first commercial lithium batteries, the cathode of lithium compounds from lithium cobalt oxide is made, but because of cobalt are rare, then use more manganese, iron, vanadium, nickel, etc. as well as the polymer composite material , and even the air as the electrode of the medium, different cathode materials, energy, security, operating voltage varies.

Negative from the graphite and various hybrid, synthetic, composite materials to play. Graphite elements space, storage space for the lithium-ion lattice.

Charge, the cathode of lithium-ion transfer to the negative most of the box, when the negative electrode on the excessive accumulation of lithium-ion to a certain limit, lithium-ion will overflow, generate dendritic crystal growth and spread of these crystals, punctured diaphragm, so that positive and  hp Pavilion DV1000 battery ， hp Pavilion dv4000 battery negative contacts, so short-circuit occurs, this time short-circuit will instantly release a lot of heat, so easy to heat and combustion of the electrolyte boiling up, the final explosion, known as "hot fail." In addition, high temperature, piercing, breakdown, metal filings connectivity, and vehicle collisions caused by compression of the battery have become positive and negative short-circuit in case of thermal failure causes.

Thus, while there are some issues as the use of solid polymer electrolyte lithium batteries, which do not reduce the leakage possibility of an explosion, but because of lithium battery is the outside world through an internal chemical reaction into electrical charge into chemical energy stored into the battery, Similarly, chemical energy by chemical reaction into electrical energy output, so that the process will produce temperature, once the temperature is too high, the danger was also followed.

Moreover, lithium battery itself has a self-discharge characteristics, that is, the battery does not charge the outside world, letting go of the conditions, it is within the ongoing chemical reactions of varying degree of speed, battery-performance self-discharge rate is low, and vice versa, "self-discharge rate "is high. This internal chemical reaction on the table would make a music player, since the explosion took place in the off state.

Heat charge and discharge heat-absorbing characteristics of a lithium battery, but sometimes too fast charging will be the phenomenon of fever, it is because the chemical reaction was too late to chemical http://www.mainec.com/ energy into electric energy, discharge the battery temperature is too late to chemical energy into into electrical energy caused by, so charging management system generally safe, but there might be problems when the discharge.

Based on this principle, lithium battery discharge current should not be too large, if the current is too big, too long duration may cause a chemical reaction and heat intense heat, and even caught fire and exploded.

In fact, publicity about the lithium battery can be fast charging, fast discharge of the concept is relatively lead-acid batteries, just a little faster, but if the lithium battery charge and discharge beyond the limits of the danger might be lurking not far away.

As for the lithium batteries in the end how much suitable current discharge should be practical to decide, but for the vehicle driving cycle, the instantaneous high-current discharge are common, this is a test for lithium batteries.

Now, charge-discharge process is controllable, you can manufacturing process, metal powder, dust, wages, and so reduce the risk, but their chemical reactions within the battery yet difficult to control.

From this, the process of lithium batteries in use, is a miniature "volcano", scrapped after the lithium battery seems to be an "extinct." After the dismantling scrapped as long as the puzzled body, the "five elements" is complete, the chemical reaction will not be interrupted, but levels decline, and hence the battery recycling lithium batteries alone will seal them as dangerous goods.

After analyzing the principle of lithium batteries, resulting in failure factors, R & D, manufacturers need to understand the lithium battery Angels & Demons double face, and the need to find a way to minimize the security risks.

Such as the tiger lion stage performances, it must be animal trainer to command, the current lithium batteries, "animal" has not been that people understand and master, applied http://www.battery-for-laptop.net/to large-capacity rechargeable batteries and vehicle operating conditions, poor working conditions should be cautious of the deal.