Do you Know How to Correctly Use lithium-ion battery

In the phone, whether it is assessed from a technical perspective or from price considerations, the battery is a very important position. Until now, the market is selling the mobile phones, used batteries have basically completed the acer travelmate 7520g battery from nickel to lithium transition. Perhaps because of cell phone battery has just completed a revolution of NiMH batteries to lithium batteries, so there is no uniform understanding of lithium batteries, in many cases, inaccurate statements and practice is quite popular. Therefore, to understand a little knowledge of lithium batteries, grasp the proper use of lithium batteries is necessary.

The use of lithium batteries should be noted that after some time the battery is placed into hibernation, lower than normal capacity at this time, the use of time has also come to shorten. However, lithium batteries can easily activated, as long as after 3-5 times the normal battery charge and discharge cycle can be activated to restore normal capacity. As the battery lithium own characteristics, its decision is almost no memory effect. Therefore, the new lithium battery cell phone users in the activation process does not require special methods and equipment. Not only in theory that, from the practice of my own, from the outset, the standard method of charging that "activation" approach is the best.

For lithium batteries, "activate" problem, many say is: charging time must be more than 12 hours, repeated three times to activate the battery. This "three times before charging to charge more than 12 hours," saying, obviously from the nickel battery (such as nickel cadmium and nickel metal hydride) inherited from the statement. So this argument can be said to misrepresent the start. Lithium and nickel battery charge and discharge characteristics are very different, and can very clearly tell you that I have had access to technical information for all the serious official stressed the overcharge and over discharge will have lithium batteries, especially lithium liquid Ion battery causing great harm. Therefore the best charging method in accordance with standard time and standard charge, especially not for more than 12 hours of super-long charge. Typically, the statement introduced mobile phone charging method is suitable for charging the mobile phone standard method.

In addition, lithium batteries cell phone or battery charger will automatically stop after full charge, there is no nickel-power charger for 10 hours the so-called the "trickle" charge. That is, if your lithium batteries in full, on the white charger is also sufficient. We can not guarantee anyone the battery charge and discharge protection circuit features and never change the quality of safety, so your battery will be at risk of long-term brink. This is also another charge against the chief reason. In addition, on some phones, the charge for more than a certain time, if not remove the charger, this time not only to stop charging system, will begin discharge – charge cycle. Perhaps the makers of this approach has its own purpose, but apparently the battery and cell phone / charger is detrimental to the life terms. At the same time, long charging takes a long time often need to be at night, while the situation of my grid, many parts of the night Dianya are high, and volatile. As already said, the lithium battery is very delicate, and its power than the nickel-resistance in the charge and discharge aspects of fluctuations in the capacity of much less, so this brings additional risk.

In addition, another aspect can not be ignored is also not suitable for Li-ion battery over discharge, over-discharge of the lithium batteries also very unfavorable. This leads to the following questions.

In our forums, often see this argument, because the number of charging and discharging is limited, so it should be possible to run out of phone battery power recharging. But I found one on lithium-ion battery charge and discharge cycle test table, on the cycle life data is as follows:

Cycle life (10% DOD):> 1000 times

Cycle life (100% DOD):> 200 times

Which is the depth of discharge DOD abbreviation. Can be seen from the table, number of charge cycles and the depth of discharge, 10% DOD cycle life than when the 100% DOD for much longer. Of course, if the actual charge equivalent to the relative total capacity: 10% * 1000 = 100,100% * 200 = 200, the latter fully charge and discharge, or better than some, but the previous users of that argument do some amendments: Under normal case, you should have reservation in accordance with the remaining battery power runs out and the principle of full charge, but if your battery is expected in the first two days you can not adhere to the time of the day, you should start charging a timely manner, of course, if you are willing to back the charger to the office has a different matter.

And you need to charge to meet the anticipated upcoming busy communications will lead to an important event, even though the remaining battery power when there is a lot, you also simply Tiqian charge, because you are not really lost, "a" charge cycles life , that is, "0.x" times only, and often this x will be very small.

Remaining battery power runs out and the principle of charging is not want you to go to the extreme. And long charging a very wide spread as saying that "as far as possible the cell phone battery run out, it is best used in automatic shutdown." This is really just practice on nickel batteries, to avoid occurrence of memory effect, unfortunately, it is also spread of lithium batteries on this. It has been because the cell phone battery low warning appears, still do not charge to use the example has been used in automatic shutdown. The results in this example was charging the phone and boot in no response, had to give customer service overhaul. In fact, this is the result of excessive discharge as a result of the battery voltage is too low, so do not have a normal result of the charge and start conditions.

3, the right way on the lithium Dell vostro 18650 battery cell phone

To sum up, I lithium batteries used in mobile phone charging and discharging, the most important tips are:

Therefore, all 12 hours long pursuit of the lithium battery cell phone charger and practices used in automatic shutdown, are wrong.If you used to be done in accordance with an error saying, please correct them in time, perhaps not too late. Of course, cell phones and chargers to protect themselves and control circuit of good quality cases, the protection of lithium batteries is quite assured. Therefore, the charge is the key to understand the rules, in some cases also may make some concessions.For example, you find that the phone must be charged before you go to bed at night, you can also start charging before going to bed. The key is, you should know what the right thing, and do not do it deliberately wrong.

Benefits Lithium ion Batteries in Numerous Applications

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.

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.

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).

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 University of Texas at Austin, staged a new development in the emerging lithium batteries incorporating polyyanions called cathodes, which could support higher voltages due to the ability and the effect of induction of new material.

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.

"Load and Use" on Battery Are Not Alone Sufficient

A battery charger has limited possibilities of diagnosis and can not detect a low battery. The green "ready" does not check the good battery performance but simply indicates that a battery is fully charged.

The low battery load faster and stay longer on the indication "ready" than those who are stronger. This makes the bad batteries tend to "gravitate" to the top and when choosing a battery, become the target of a user not suspecting this problem. In an emergency, where action is needed fast charging, the batteries that indicate the status "ready" are perhaps the "dead wood". At the same time, good battery packs are still being charged because they have more capacity to fill.

Manufacturers of portable equipment preach the importance of regular testing of batteries. The battery analyzer ensures that all batteries meet the required performance level.

The battery analyzers C7200 C7400 2-Post and 4-positions are well suited to the maintenance of rechargeable battery used in communications devices. These analyzers are simple to use and provide accurate information on health status. In addition, analyzers extend the 18650 battery life and restore the lost capacity of nimh batteries. Future replacements of the lithium batteries can be predicted, thereby improving system reliability and reducing costs. Figure 6 shows the Cadex C7400 battery analyzer.

According to the NYT, the country ravaged by war alone has more than all major lithium reserves, notably Russia, South Africa, Chile and Argentina combined.

With this discovery, many observers argue that the huge deposits of lithium could change the economic model of the country, making it go from being almost nonexistent to that of one of the biggest mining giants the world has ever known. However, it will still manage the political instability.

BMW and Toyota Begin Lithium-ion Battery Research Cooperation

BMW is more than willing to align itself with other automakers in the race to develop future technologies, including a partnership with GM on hydrogen fuel cells and a deal with Toyota for diesel engines. Late last year, BMW and Toyota signed a memorandum of understanding (pictured) that said the two companies would work together to create new green technologies. Today, we learned a few more details about the plan to make better electric vehicle batteries with the news that the two companies have now signed a joint research agreement for better next-generation lithium batteries.

Specifically, BMW said in a statement, the project will try to increase "the performance and capacity of lithium-ion 18650 battery cells through the use of new combinations of materials for cathodes, anodes and electrolytes." That's not as exciting as testing a new vehicle, but when better batteries get to cars on the market, we'll be thankful someone took the time to figure it all out.

Honda Insight: Inexpensive Hybrid Vehicle

A low price tag may no longer be enough

Initial Thoughts

I know the CR-Z, Mr. Insight. And you, sir, are no CR-Z. You may be among the least-expensive hybrids out there, but you are not among the best.

The 2000 Honda Insight was the first commercial hybrid we saw; the Toyota Prius was the first worldwide, but the Insight arrived in Canada slightly ahead of it. Unlike that original two-chair model, the current Insight has a rear seat, and it’s arguably a much handsomer vehicle. But it’s not as technologically advanced as the Prius, and it’s nowhere near as much fun as its more powerful, and surprisingly sporty and tossable Honda CR-Z cousin.

The Insight was temporarily discontinued for 2011 – Honda cited production difficulties due to the Japanese tsunami – and it returns for 2012 in a single base LX trim line, with the upper-level EX trim no longer available. Its MSRP is $21,990, but only a few options and accessories can be added to it, including a “Protector Package” of all-season mats, cargo tray and mud guards for $405, a leather-wrapped steering wheel for $194, and a USB adapter at a hefty $468.

Performance

The Insight starts with a 1.3-litre four-cylinder gasoline engine, rated at 88 horsepower and 88 lb-ft of torque. Honda then hooks it to an Integrated Motor Assist (IMA) system, a thin electric motor that can boost the combined output to a maximum of 98 horsepower and 123 lb-ft of torque. The motor’s powered by a nickel metal hydride battery (NiMH) that recharges through regenerative braking – you don’t plug this car into the wall to charge it. The sole transmission choice is an automatic, gearless continually variable transmission (CVT).

As with other hybrids, the Insight has a start/stop function: when you come to a stop with your foot on the brake, and such parameters as ambient and engine temperature are in line, the gasoline engine shuts off, saving fuel and eliminating emissions. The lights, stereo and climate system continue to operate, although I did notice that the heater fan speed dropped considerably. This was especially evident when I had the “Eco” button engaged, which also cuts back aggressively on the engine performance and throttle response. The engine starts up again as soon as you take your foot off the brake, with a bit of a rough jolt each time.

The Insight’s system is commonly called a “mild” hybrid, as the electric motor primarily assists the gasoline engine. It is capable of running on its battery alone, but only under certain conditions, which is most likely when you’re cruising on a flat road at around 40 km/h. It can’t start off on electric power or run at low speeds on its battery as the Prius can.

The performance is about what you’d expect for 98 horses in a 1,240-kg car, which means you have to rethink gaps in traffic. No matter how hard you stomp the throttle, that truck you just cut off is going to get very big in your rearview mirror. The CVT can be placed into Sport mode, which keeps it at higher revs and makes it feel a bit peppier, but it all gets rather noisy. The published fuel figures are 4.7 L/100 km in the city and 4.4 on the highway, while in a week of combined driving in moderate cold – most of it in the Eco mode – I averaged 4.9 L/100 km.

Ergonomics/Comfort/Quality

The Insight’s busy dash isn’t bad-looking, but there’s an awful lot of hard grey plastic, and combined with the tinny doors, it’s a bit low-rent. That said, when you’re getting hybrid technology and a NiMH battery for less than $22,000, you have to expect that there will be compromises. Everything fits together well, and there were no squeaks or rattles. I did find, though, that the dash and its lines are reflected in the windshield in bright sunlight, which became annoyingly distracting .

That odd centre stack is actually well-positioned for the driver, and includes standard automatic climate control, with a dial for adjusting the temperature. The stereo is equally simple, once you figure out that the on/off button isn’t the big dial in the middle, but a piddly little one up in the corner.

The two-tier dash has a digital speedometer up top, with a background that glows green when your driving is light-footed, and which turns blue when you’re being less economical. The bottom half contains the tachometer, along with a driver-selectable information screen that can display instant and average fuel economy, whether the car’s on gasoline or electricity, or a forest of tiny “trees” that sprout more leaves as you continue driving efficiently. I liked to keep the fuel economy gauge displayed, but every time I shut the car off, I had to hit the button on the steering wheel to bring it back again. Why can’t it just stay on?

Comfort-wise, the Insight’s seats are great for commuter drives, although they get hard on longer trips. The foot wells are long but narrow, and so when my passenger got squirmy on a long drive – the seats were past their comfort zone at that point – he couldn’t find the room to stretch his feet sideways for a bit of relief. The rear seats have enough legroom for full-size adults.

Functionality/Usability

There are several small-item cubbies, including two shallow ones in the dash, one lidded (a push-button opens it) and one open. The cupholders are set under the dash and in front of the shifter, and so you’ll probably rap a taller travel mug against the dash. Most will end up using the cupholder at the rear of the centre console.

Standard features include cruise control, power windows, keyless entry, fixed intermittent wipers, and a CD/MP3 stereo with auxiliary input jack, but no Bluetooth.

There’s also plenty of storage space at the back, with a cargo floor that’s 85 cm long when the rear seats are upright, and a completely flat 160 cm in length when they’re folded. There are also several cubby spaces hidden under the floor.

Conclusion

Up until recently, the Insight was able to claim the title of the least-expensive hybrid available. That was quite a selling point, since hybrids have a relatively high break-even point – that moment when the fuel you save makes up for how much more they cost over a comparable gas-only car. And while it never offered the most exhilarating driving experience, it was still fuel-miserly enough, especially if drivers needed more than the two seats offered in the vastly more fun-to-drive Honda CR-Z.

What’s thrown a wrench into everything is the all-new Prius c, the smallest of Toyota’s hybrids, which starts at $20,950 to the Insight’s tag of $21,990. It’s a bit stubbier but has comparable interior space, has pretty much all of the Insight’s features (plus Bluetooth and USB port), more airbags, the same combined horsepower, and most importantly, even better fuel economy, thanks to being able to run more often on electricity alone. The Insight may have been the first to reach our shores, but given so many strikes against it, I wonder how much longer it will last

Alternative Fuels

Although fuels such as gasoline and diesel are the most popular energy source for cars, there are several others, especially less polluting ...
Alternative fuels are patterns of energy use something other than oil, including gasoline and diesel. They have the great advantage of reducing pollution and emissions of greenhouse gases. There are several types including electricity, ethanol, natural gas, liquid propane, fuel cells and hydrogen, batteries for electric and hybrid vehicles, biofuels, clean diesel, etc..
Electric vehicles
First, there is this type of vehicle that is becoming increasingly popular. It uses only one power, that of electricity. The electric vehicle thus produces no pollution and people with a do not need to visit petrol stations.
Although electric vehicles make a lot of attention for a short time, it's not yesterday that it exists. The electric motor appeared simultaneously with the car, which means the 19th century, as the combustion engine and steam. But it is especially in recent years that there is a resurgence in the field by some companies, including Mitsubishi, GM, Renault-Nissan and the company Bolloré. Since then, every automaker tries to have its fleet in its own electric model.
These are complex technologies, but in a few words, so that energy can move the vehicle, energy is created and stored in batteries and it is one or more electric motors that is the basis of operation. Battery charging is done via a external power source, a conventional electrical outlet in the house, but there are also more powerful kinds of chargers to reduce the cooldown.
19th century until today ...
However, whether the 19th century or today, the problems remain the same. They translate, how to increase the driving range and how to set up a network of supply for charging interest? If these problems persist since the 19th century and it is still difficult to find interesting and possible solutions, why continue to put as much effort on these systems? The fight against pollution and greenhouse gas emissions is becoming more and more people, as well as any possibility that there is more oil a day and the price of gasoline continues to climb ensure that electric cars are becoming increasingly attractive.
Research continues therefore to improve the autonomy, the life, efficiency and time to recharge the batteries. However, models built today are more powerful than before and also better designed, giving a chance to batteries offer higher yields.
Example Vehicle: Mitsubishi i-MiEV, Tesla Roadster, Nissan Leaf
Ethanol
This product consists of a mixture of ethanol and gasoline. This energy source could reduce emissions of toxic air about 4 10%. Most cars can use ethanol without the systems, including the engine, be modified, however, must not exceed an amount greater than 10% in the blend with gasoline. Ethanol and equipped with the EcoLogo certification "Environmental Choice" must have been made from corn, wheat or wood, or renewable natural resources.
Biodiesel
This product is considered as an alternative fuel for diesel. It is made from vegetable oil or waste cooking or animal fats. Biodiesel is considered to be less harmful to the environment because it burns better, so it produces fewer toxic emissions.
Natural gas
Like biodiesel, natural gas burns better, therefore produces fewer toxic emissions into the air. It is also more efficient than gasoline and traditional diesel. VGN called for natural gas vehicle, this compound has proven and continues to do them. Moreover, there are over 25,000 such vehicles in Canada. It is also possible to convert a gasoline vehicle into NGV. However, this is still the way to recharge problematic in this type of alternative fuel.
Liquid propane
Propane is a byproduct of natural gas and oil refining. This is actually a product gas under pressure, but stored in liquid form. Similarly we recharge his vehicle with gasoline, propane refueling is fast and is calculated by the liter.
Like the vehicles running on natural gas, it is also possible to convert a gasoline vehicle to vehicle propane. According to available data, propane could reduce emissions of greenhouse gases up to 20%. It is mainly large consumers of gas who use this type of fuel, such as delivery vehicles.
Fuel cell vehicles
A fuel cell is a current generator that transforms chemical energy into electricity through the oxidation of a fuel, for example of hydrogen and oxygen in the air, which occurs on the electrodes. The kind of battery is the most commonly used battery dihydrogen-dioxygen.
For some time, with research and studies, the fuel cell has become a very attractive alternative fuel. In addition to not produce any pollutants, they also have the advantage of having an energy-efficient.
The rechargeable batteries have both electrodes (anode and cathode) separated by an electrolyte (instead of the chemical reaction). The main difference between the various cells is the electrolyte, the product (gas or liquid) of the anode and the cathode gas.
There are many types of fuel cells including:
◦ fuel cell formic acid◦ fuel cell phosphoric acid◦ alkaline fuel cell◦ cell molten carbonate fuel◦ ceramic fuel cell protonante◦ ethanol fuel cell direct◦ fuel cell borohydride direct◦ reversible fuel cell◦ cell direct methanol fuel◦ photoelectrochemical cellThere are also other types of batteries, the best known are the cell solid oxide fuel, which is expensive but offer superior performance and fuel cell proton exchange membrane, which is the most interesting and promising for the automotive industry with a low operating temperature, its simplicity and good performance. This type of battery, although it has many qualities, however, an overall performance that is not high enough for use in mass. Studies are currently underway to improve the whole.
Fuel cells to hydrogen and methanol production methods are derived from the fuel cell.
Hydrogen fuel cells
This type of battery converts chemical energy into electrical energy, but directly and thus get a continuous stream. In this case, hydrogen fed to the anode and oxygen cathode. Its voltage is 1.2 V and can radiate heat up to 60 to 80 ° C.
What is nice with hydrogen fuel cells is that because they are based on hydrogen, they are not harmful to the environment. Some say it could also become the main energy resources in Canada for green transportation. Called VPC, for fuel cell vehicles, it is a method similar to battery electric vehicles. The major difference lies in the manufacturing process where instead of creating electricity by a reversible electrochemical reaction, electricity is generated here through an irreversible electrochemical reaction of oxygen and hydrogen.
Methanol fuel cell
There are two types of fuel cells based on methanol. First, there are the batteries Reformed Methanol Fuel Cell (RMFC) and also the batteries Direct Methanol Fuel Cell (DMFC). The difference is at the conversion of methanol. This type of battery is not very healthy for the environment, unlike hydrogen fuel cells, because they reject a lot of carbon monoxide and CO2.
There are also many other types of fuel including gasoline and clean diesel, liquefied petroleum gas, and dual fuel vehicles to flexible fuel, batteries (nickel metal hydride battery (NiMH), lithium-ion battery), the lead-acid batteries and hybrid electric vehicles already covered in another folder.
Automakers that offer vehicles or who have developed a prototype using the fuel cell are numerous. There is for example, Ford, GM, Honda, Hyundai, Toyota, Renault-Nissan, etc..

Lithium Battery Charge and Discharge

Lithium battery in early stage was lithium manganese battery, whose discharge course was redox reaction of primary battery. Afterwards lithium-ion battery, with reaction principle completely different from lithium manganese, had appeared. Currently, lithium-ion battery is called lithium battery, which is used more widely than previous lithium manganese battery. Thus analysis of lithium battery charge and discharge should be based on lithium-ion battery.

Based on former lithium metal battery, Sony first invented lithium battery with carbon material as cathode and lithium-containing compound as anode. This lithium-ion battery, with no lithium metal in charge& discharge process, is namedlithium battery.

At first, discuss lithium battery charge issue, which mainly involves lithium battery charge method and whether lithium battery is fully charged. Lithium battery charge is divided into two steps: CC charge course +CV charge course, among which CC charge take up most charge time while CV charge is just a supplementary charge course. During charge, lithium battery should be avoided overcharge. Formal lithium battery chargers have set charge program to prevent overcharge. Ordinarily, lithium battery pack is equipped with PCM to avoid overcharge.

During lithium battery discharge, lithium-ion came off from cathode carbon layer and move to anode. The more the lithium ion back to anode, the higher the discharge capacity is. Lithium battery capacity generally mentioned refers to discharge capacity under 0.2C discharge rate. Lithium battery discharge is reverse movement of its charge course. Because charge and discharge displays in the form of repeat movement of li ion between anode and cathode, lithium battery is also called rocking chair battery.

Lithium battery discharge is also a voltage fall process. In case of discharge under low current, discharge lasts long and voltage reduces slowly; if discharge under high current, voltage drop fast, discharge will be short. In terms of output power, available discharge capacity of a single lithium battery with low current is larger than that under high current because of high resistance under high current.

IEC standard stipulates lithium battery discharge current is 0.2C. yet discharge current in practical use can be adjusted as per actual requirement and lithium battery pack condition, for instance, discharge current of lithium battery pack with high discharge rate can be set higher.

In addition, note lithium battery discharge cutoff voltage. Its optimal discharge voltage is 3.0V; however, cutoff voltage of lithium battery in actual use may be lower than 3.0V to make full use of battery capacity. 2.75V is mostly common discharge cutoff voltage. In case cutoff voltage arrives, charge battery; continuous discharging battery under cutoff voltage can lead to over discharge on lithium batteries and affect lithium battery performances. Luckily, current lithium batteries are equipped with PCM to avoid over discharge and protect lithium battery.

Reference: http://www.large-battery.com/lithium-battery-charge-and-discharge.html