Performances such as lion, tiger stadium, the trainer must be animal control, the current lithium batteries, “animal” was not that people understand and master, applied to batteries of high capacity rechargeable and vehicle operating conditions of poor working conditions should be cautious response to.laptop battery rechargeable
Yong-Kang Sha
New energy vehicles in China has brought a wave of enthusiasm, making mobile communications and mobile has had a huge convenience of audio-visual aspects of lithium batteries to become the competition’s most popular and one of the concerns.
However, when more people living on the odometer, dell gk479 battery the battery life and even how to deal with waste batteries and so their brains, a very important fundamental problem seems to have been overlooked, is – simply secure?
March 1978, served in the pharmacy of the United States Exxon (engineer) invented Stanley Weitinghanmu lithium, probably does not think the next 30 years the invention of science and technology to human life in a change enormous, and lithium, the lightest metal known the natural world has become more intimate and human together.
At that time, the sulfur compounds Weitinghanmu to the titanium anode, lithium metal as the anode in the first prototype of a global lithium battery.
It works by lithium-ion battery sony vgp-bps10 battery positive and negative cycle formed between the current movement to achieve load and discharge process. Therefore, lithium batteries, also known as lithium-ion batteries.
A few decades thanks to constant improvements to the anode and cathode materials, smaller and more energy density of lithium batteries, as well as lower prices were made, the advent of mobile phones, to further promote its miniaturization, lightweight, and later universal access to micro-electronic products, such as music players, today, is even regarded as a wave of strong electric cars inevitable choice.
Things, however, in recent years, mobile phones and the explosion of the music player’s battery is common, it seems that once again sounded the alarm – which brings convenience to people’s lives are not imaginary seem less secure. The relaxation of the manufacturer’s quality control it? R & D are elements of the battery changed? Or the attention of people and underestimated the power of secure storage?
A mobile phone battery contains lithium metal, lithium less than 5 g, a mini-electric cars more original, if rechargeable batteries 30kwh above, the battery contains lithium metal is about 50 kg or more, hp f4809a battery cell phone batteries will cause the explosion is still afraid of a group of mini-cars in case the battery if it happens, the consequences would be unthinkable.
China has held in lithium batteries installed in electric vehicles, parking in the garage during the night suddenly caught fire and the vehicle burned and the situation a few months ago, there was the phenomenon of spontaneous combustion of hybrid buses, but the discovery and elimination of too early, before major damage is not brewing. Obviously, the planning is the battery, the liability of the electric vehicle industry.
Indeed, the lithium there is an explosion of potential safety problems, many reasons to be broken, but apparently all the elements of its own can not avoid involvement.
Is usually a cathode of lithium battery, the anode, membrane, electrolyte, monomer packing five major components. At that time, Sony has 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 of manganese, iron, compaq presario 2500 battery vanadium, nickel, etc., and synthetic polymer materials, and even the air electrode of the medium, different cathode materials, energy, security, operating voltage ranges.
Negative graphite and various hybrids, synthetic composite materials to play. Elements Graphite space, storage space for lithium-ion lattice.
Load, the cathode of lithium-ion transfer at the most negative of the box, where the negative electrode on the excessive accumulation of lithium-ion batteries to a certain limit, lithium-ion overflow, generating growth dendritic crystals and the spread of these crystals, the perforated diaphragm, so that positive and negative contacts, thus short-circuit occurs, this time short-circuit at the instant release a lot of heat, so easy to heat and combustion of the electrolyte boils, the final explosion, called “hot fail.” In addition, high temperature, piercing, ibm thinkpad r32 battery ventilation chip connectivity, and vehicle collisions caused by compression of the battery became positive and negative short-circuit in case of causes of insufficient heat.
Thus, although there are some problems such as using lithium solid polymer electrolyte, which does not reduce the possibility of leakage of an explosion, but because of the lithium battery is the outside world by a chemical reaction internal electrical charge into chemical energy stored in the battery Similarly, chemical energy by chemical reaction in the production of electrical energy, so that the process will produce temperatures, once the temperature is too high, Hazard was also followed.
In addition, the lithium battery itself has a self-discharge characteristics is that the battery is not charging the outside world, the release conditions is in chemical reactions under varying degree of speed, battery-performance self-discharge rate is low, and vice versa, “self-discharge” rate is high. apple a1245 battery This internal chemical reaction on the table would make a music player, since the explosion took place in the OFF state.
Heat load and discharge the heat-absorbing characteristics of a lithium battery, but sometimes too fast charging will be the phenomenon of fever, because the chemical reaction is too late to chemical energy electric discharge the battery temperature is too late to chemical energy into electrical energy caused by the pricing if the management system generally safe, but there could be problems at the landfill.
Based on this principle, the discharge of the lithium battery current should not be too large if the current is too large, too long May cause a chemical reaction and heat of the intense heat, and even caught fire and exploded.
In fact, advertising on the lithium battery can be a fast charge, sony vgp-bps10/s battery rapid discharge of this concept is relatively lead-acid batteries, just a little faster, but if the charge and discharge of lithium across limits the danger could be hiding nearby.
As for lithium batteries in the end how appropriate 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.
Wages Now, load-discharge process is controllable, you can handle the manufacturing, metal powder, dust, and reduce the risk, but their chemical reactions inside the battery, but difficult to control.
From this, the process of lithium batteries in use, is a miniature “Volcano”, discarded after the lithium appears to be an “off”. After dismantling deleted as long as the body perplexed, dell inspiron 6400 battery the “five elements” is completed, the chemical reaction will not be interrupted, but the level drops, and thus the recycling of lithium batteries alone the seal as dangerous goods .
After analyzing the principle of lithium, resulting in a failure factors, R & D, manufacturers need to understand the lithium Angels & Demons double-sided, and the need to find a way to minimize security risks .
Performances such as lion, tiger stadium, the trainer must be animal control, the current lithium batteries, “animal” was not that people understand and master, applied to batteries of high capacity rechargeable and operating conditions of vehicles, poor working conditions should be cautious of the transaction.
