Lithium ion batteries have become very popular applications of a new technology that is implemented quickly in the electronic media in our home and work environment. Laptops, cell phones, iPods, PDAs, power tools are supplied to an energy storage system more reliable, much more capacity. Lithium ion batteries are the future and are here to stay with us.
A technology that is beginning to move electric and hybrid vehicles, which sound the music playback devices, moving bicycles and motorcycles, which allows phone conversations have loads for days or satellites move in their orbits parking.
The benefits of lithium ion batteries are related to a reduction in weight per unit device. Lithium ion batteries are lighter than their nickel-cadmium or nickel hydride, for example. And is that the electrodes of lithium ion batteries of the metal and carbon are much lighter, in addition, lithium is a very reactive metal. There is a lot of potential energy stored in its atomic bonds, large amounts of energy in a short space.
A revealing fact. While a lithium ion battery is capable of storing around 150 watt hours of electricity per kilogram of battery weight, an ordinary nickel metal hydride battery reaches only accommodate 100 watt hours for the same weight ratio, although the most common configuration of the latter batteries only provide between 60 and 70 watts. Less than half the capacity of a lithium ion battery. Calls lead acid batteries can store only 25 watt hours per kilogram. Six times less than a lithium ion.
But there are more benefits in this new technology already in use in batteries. A lithium ion battery can lose in the worst case, 5% of its stored energy, a nickel hydride can dissipate as much as twenty percent if not recharged. In addition, lithium ion batteries do not have what is known as memory effect.
A problem that affects current and batteries is that, if they are not completely downloaded, can only be recharged up to a limit, the difference between missing energy with which he had loaded and before putting the battery back in charge. In practice, the batteries must discharging currents, the lithium ion no.
But the benefits of lithium ion batteries to give even more, can withstand hundreds of cycles of loading and unloading without altering its performance, one of the most common problems of current batteries that still have a significant presence market, and that makes rechargeable nickel-cadmium or nimh batteries bad competitors for this new technology has only to take the first steps.
A technology that is beginning to move electric and hybrid vehicles, which sound the music playback devices, moving bicycles and motorcycles, which allows phone conversations have loads for days or satellites move in their orbits parking.
The benefits of lithium ion batteries are related to a reduction in weight per unit device. Lithium ion batteries are lighter than their nickel-cadmium or nickel hydride, for example. And is that the electrodes of lithium ion batteries of the metal and carbon are much lighter, in addition, lithium is a very reactive metal. There is a lot of potential energy stored in its atomic bonds, large amounts of energy in a short space.
A revealing fact. While a lithium ion battery is capable of storing around 150 watt hours of electricity per kilogram of battery weight, an ordinary nickel metal hydride battery reaches only accommodate 100 watt hours for the same weight ratio, although the most common configuration of the latter batteries only provide between 60 and 70 watts. Less than half the capacity of a lithium ion battery. Calls lead acid batteries can store only 25 watt hours per kilogram. Six times less than a lithium ion.
But there are more benefits in this new technology already in use in batteries. A lithium ion battery can lose in the worst case, 5% of its stored energy, a nickel hydride can dissipate as much as twenty percent if not recharged. In addition, lithium ion batteries do not have what is known as memory effect.
A problem that affects current and batteries is that, if they are not completely downloaded, can only be recharged up to a limit, the difference between missing energy with which he had loaded and before putting the battery back in charge. In practice, the batteries must discharging currents, the lithium ion no.
But the benefits of lithium ion batteries to give even more, can withstand hundreds of cycles of loading and unloading without altering its performance, one of the most common problems of current batteries that still have a significant presence market, and that makes rechargeable nickel-cadmium or nimh batteries bad competitors for this new technology has only to take the first steps.
But lithium batteries also have their drawbacks. Inconvenience to the same industry that has made all its means to overcome them with great imagination and in some cases, great simplicity.
Here are a few cases. Manufacturers of lithium ion batteries were reproaches that your batteries may only last can only be used for a limited time. Car batteries, for example, two or three years. True, but the answer found by manufacturers to battery stocks of dealers are not affected by energy losses in the stores is as simple as setting the point of sale all the instructions to put in solitary to use the battery in situ.
Manufacturers cochesestán debaterías for delivering fluid accumulators required for use. These come in separate bags and labeled with the elements and the battery block. The seller or installer delivers the lithium ion battery or the place and time of use begins at the time. Also, car batteries lithium ion and sealed after incorporate liquids, maintenance-free throughout their life cycle.
Another factor considered to affect the performance of lithium ion batteries is the effect of high temperatures reduces the energy stored by the battery. Manufacturers have discovered that the use of other materials in the device housing, for the films producing energy within or using a different combination of metals or alloys with lithium to greatly minimizes or eliminates the possibility of discharge undesired influence of heat and ambient engine compartment.
One of the issues that also cast doubt users about the value of technology for lithium ion batteries is a result of the previous comment, the possibility of discharge of non-scheduled by the effect of abnormal temperatures. Manufacturers offer standard control devices on the same accumulator that allow to see at any time, the charge levels.
Here are a few cases. Manufacturers of lithium ion batteries were reproaches that your batteries may only last can only be used for a limited time. Car batteries, for example, two or three years. True, but the answer found by manufacturers to battery stocks of dealers are not affected by energy losses in the stores is as simple as setting the point of sale all the instructions to put in solitary to use the battery in situ.
Manufacturers cochesestán debaterías for delivering fluid accumulators required for use. These come in separate bags and labeled with the elements and the battery block. The seller or installer delivers the lithium ion battery or the place and time of use begins at the time. Also, car batteries lithium ion and sealed after incorporate liquids, maintenance-free throughout their life cycle.
Another factor considered to affect the performance of lithium ion batteries is the effect of high temperatures reduces the energy stored by the battery. Manufacturers have discovered that the use of other materials in the device housing, for the films producing energy within or using a different combination of metals or alloys with lithium to greatly minimizes or eliminates the possibility of discharge undesired influence of heat and ambient engine compartment.
One of the issues that also cast doubt users about the value of technology for lithium ion batteries is a result of the previous comment, the possibility of discharge of non-scheduled by the effect of abnormal temperatures. Manufacturers offer standard control devices on the same accumulator that allow to see at any time, the charge levels.
And on the possibility that the batteries explode or catch fire, this risk is as low as that of any other batteries, it is most likely urban legends urged on by stiff competition in a sector where it has entered a new technology that so brilliant, it is becoming an important part of cake sales and success is a result of the satisfaction of customers who apply the benefits of lithium ion batteries for all types of mechanical devices.
Devices that work with a lithium-ion batteries that are at the heart of its mechanisms, batteries are all benefits.
Lithium batteries have been used for years in all mobile phones and electronic devices such as laptops, for its durability compared to traditional cadmium batteries.
Lithium batteries use a lithium salt as an electrolyte to store electrical energy.
Lithium batteries are characterized by their high resistance to the discharge of batteries when they are not used for a prolonged period of tiempo.A This is called "memory effect".
These batteries also called, Li-on batteries, suffer more at high temperatures and in some cases have been reported explosions of batteries in mobile phones.
Today technological enterprises of manufacture of batteries are lithium batteries developed more power and durability for use in propulsion vehicles as cars or buses.
The increased use as stated before this element resides in the production of lithium batteries, which have numerous advantages over other such as:
They have greater storage capacity, so this has been an advantage in creating modern appliances such as (mp3, mobile ...) have managed to reduce its size considerably as their weight has also been reduced, which has modern electronics weighing less than 100g.
They have the so-called memory effect, which is warehousing capacity loss, because if not charged upon exhaustion of all lose some of this. So although you never get full recharge completely fill.
If you want you can download in no time at all, or if instead they are in a little device that we use, these will eventually lose some of its charge (like any other 18650 battery) but with a much slower rate (up 3 times less).
They have the so-called memory effect, which is warehousing capacity loss, because if not charged upon exhaustion of all lose some of this. So although you never get full recharge completely fill.
If you want you can download in no time at all, or if instead they are in a little device that we use, these will eventually lose some of its charge (like any other 18650 battery) but with a much slower rate (up 3 times less).
On the contrary have other drawbacks, some of them are:
They work best in temperatures that undulate between 15/25°C because if you exceed yield worse.
Also have a lower life round the 600 recharges or up to 4 years.
If they work at high temperatures they may explode.
In short, batteries / lithium-ion batteries have more advantages than disadvantages for what they have been the replacement for cadmium and lead.
New technologies are driving the batteries to have the strength to how to move a car. Therefore cars are being created at the moment the technology mix of gasoline with electricity. What is giving results that worry, as this could reduce CO2 emissions by 70%, which for people in the environment is a very substantial reduction. These are designed for hybrid and electric vehicles that achieve greater autonomy and recharge faster. The developer and now holds the patent is QinetiQ.
Future vehicles are expected to bring this technology completely and so far only used for speeds below 60km / h, and from there you need to run the combustion engine as any other car. They also have a really small range does not exceed 5 hours recharge time having a really high.
If the technique and technology have complicated the perspective on lithium ion applications, the physics of the batteries, however, is very simple. In lithium batteries, lithium ions move between anodes and cathodes. Lithium ions move from the anode to the cathode during discharge times and, conversely, from cathode to anode load periods.
Lithium batteries are now the most popular of portable electronics batteries, because they present one of the best relationships between weight and power generation, besides not having the so-called memory effect which significantly reduces many batteries performance.
The three basic elements of the operation of lithium iron phosphate battery are the anode, cathode and electrolyte can be composed of different materials, depending on the use to which it will give the battery. The anode is usually made of grafto, which has replaced the first models produced in titanium disulfide.
The cathode, for its part, is made today cobalt oxide or manganese oxide. Although the combination of the use of materials, provided will depend on the material that are made each of the basic components of the life of the battery voltage and the exterior of the structure of the equipment.
The first prototypes of lithium batteries were developed in the seventies by the Exxon, using titanium sulfide cathode and lithium metal anode.
However, the real practical performance of lithium batteries began to take shape with the implementation of Bell Labs who developed a graphite anode and more efficient alternative to lithium metal. The first commercial battery with these new additions, and a performance that made these batteries truly competitive, came with the lithium cobalt Sony in 1991
In 1983, Michael Thackeray and his team had already identified manganese spinel and materials for the cathode, because they had good conductivity, because they were cheap and because their internal structure gave them a good stability for use in batteries the next generation. The disadvantage of this system was that the spinel decomposed by covering one cycle of use, which has been fixed in later productions.
Some time later, in 1989, Arumugam Manthiram and John Goodenough of the
Following this, in 1996, Goodenough's team discovered the usefulness of the material electrochemical lithium iron phosphate, LiFePO4. A material in the development of this technology that provided security to the batteries which are used mainly in mobile phones or digital clocks.
The advantages of lithium ion batteries are obvious statistical tables only observe its performance under extreme conditions common. Thus, a lithium battery pack that operates over a life cycle of one year at a temperature of zero degrees just loses only 6% of its load! 00%, or whatever it is, retains 94% in those extreme conditions.
At 60 degrees Celsius, while in many other battery currents evaporation liquid has been necessary to play their stored energy, lithium ion batteries can still retain 60% of their charge after three months of intense work also in these extreme conditions.
And if the load is less, just under 40%, the battery still retain 75% of its charge after a year of use at 60 degrees. Or what is the same, around 30% of all possible load of the equipment. A record that far outstrips conventional batteries, even the highest performance.
没有评论:
发表评论