Showing posts with label battery technology. Show all posts
Showing posts with label battery technology. Show all posts

Tuesday, September 27, 2011

How Battery Work by Battery Technology

How Battery Work by Battery Technology

Read the article to understand working of car, rechargeable and normal batteries.

358580-4519-14.jpgBatteries are virtually everywhere. You will find batteries in cars, laptop computers, portable electronic devices like MP3 players and also in cell phones. Batteries are also of different types. You have the large car batteries, rechargeable batteries and common alkaline batteries. Irrespective of the type and use, the basic working of battery remains the same. A battery is like a small tin, full of chemicals, wherein electrochemical reactions take place and generate electrons. Answers to various questions like how batteries work, how car batteries work and can freezing improve battery life, among others, can be found below.

How do Batteries Work?

Looking at a battery, you will find two terminals. One of them will be marked positive (+), while the other one negative (-). Normal cells (AA, AAA, C or D) have these terminals on each of their ends, while a car battery will have two lead stations which work as terminals.

A chemical reaction inside the battery generates electrons. These electrons accumulate at the negative terminal of the battery. It is essential for the electrons to travel from the negative terminal of the battery to it's positive terminal, to ensure the chemical reaction takes places continuously, thereby generating power. A battery's internal resistance determines the number of electrons which travel between both terminals. Anything (load) can be connected to both terminals of the battery with help of a wire, to provide the load with necessary power to function. 

How Rechargeable Batteries Work?

Although invented long time ago, rechargeable batteries are even more in demand these days thanks to all portable electronic devices like cellphones, music players and laptops, which people have started using a lot. Working of a rechargeable battery is simple. The process of electrons moving from negative to positive terminals is turned around, whenever any electrical energy is applied to the battery, thereby bringing back any lost power. Normally, an adapter is required to facilitate this process.

The amount of electrical current allowed by the charger determines how quickly you can recharge your battery. Few batteries are capable of handling higher voltage in a short span of time, while most of them require a lower voltage supply for a longer span of time. Once the electronic device is completely charged, it is essential to disconnect it from any electrical supply to avoid overcharging. Read more on cell phone battery and laptop battery.

How do Car Batteries Work?

The basics of working of a car battery remain same as any other battery. So, how does a battery work in a car? Well, the two electrodes, anode and cathode are immersed together in an electrolyte. In case of car batteries, both electrodes are made of lead dioxide and lead. A solution having one-third sulfuric acid is used as an electrolyte. Whenever any power is released from the battery, a chemical reaction turns both electrodes to lead sulfate. A non-conducting barrier present between both electrodes prevents any short circuit. This kind of battery design is called lead-acid design.

The best part about car batteries is that it is a completely rechargeable, as the electrochemical gets reversed whenever electrical current is enforced on the lead-acid battery. You can read more on how to charge a car battery.

Does Freezing Batteries Work?

A common myth among people is that batteries continue generating electricity even when not in use. This is false, as batteries are incapable of chemical reaction unless in use. Therefore there it makes no sense in freezing batteries in a refrigerator, as it will only help in slowing the chemical reaction process. So when you actually will need the battery, it wont work instantly as it will take time to warm up.

It is true batteries self discharge at a certain rate constantly, though it is a very slow process. In case of alkaline batteries, they tend to get discharged faster in extremely warm climates. Unless you are staying at places with more than 100 degree Fahrenheit temperatures, it does not make sense to store them in freezers. However, NiMh and NiCd batteries deplete themselves much quicker than alkaline batteries, even when stored at room temperatures. It is therefore smart to store these batteries in a freezer, to preserve them longer.

How do Batteries Work for Science Project

How batteries work can be easily shown as part of a science fair project. All you will need is a copper nail, a zinc nail, a plastic coated insulated wire and a lemon. To start the project, cut the wire in to two pieces of 6 inches each and take out an inch of insulation coating from each end of both wires. One the lead and copper nails, wrap the bare part of the wire. Insert both nails in the lemon keep a 2 inch space between them. Now when anyone touches the other ends of the wire, a tingling sensation will be felt on the tongue. This is due to certain chemical reaction taking place between lemon juice, the copper nail and the zinc nail, which releases electrons through the wire. Read in detail about the lemon battery experiment.

You must have definitely understood how batteries work after going through the article. Put your knowledge on ‘working of battery' to good use by explaining it to young children and others around, who are still alien to this concept.

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About the Author

http://www.batteryfast.co.uk/ - Quality notebook batteries, cordless drill batteries, camcorder batteries, online shop: buy now save 30%!

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Thursday, August 4, 2011

A hybrid battery pack Squeezes More Miles Out of Gasoline

A hybrid battery pack combines an ultracapacitor, which bottles up a quick burst of power, with a conventional battery, which can store more energy.IoxusA hybrid battery pack combines an ultracapacitor, which bottles up a quick burst of energy, with a conventional battery, which can store more energy. 

On Monday I wrote about odd new devices that would help big trucks meet new standards for heavy vehicles' fuel economy that are expected to be issued any day now. Also expected imminently were new corporate average fuel economy (known as CAFE) standards for cars, pickups, minivans and S.U.V.'s.

Rules announced last year already required that cars get an average of 35.5 miles per gallon starting in the 2016 model year. And as with trucks, a variety of battery technologies are emerging from the labs to improve fuel economy.

For cars, one obvious strategy is to have the engine shut down whenever the car stops at a red light. That requires quickly starting the engine when the light turns green, and that means frequent discharges of large amounts of current.

This is a challenge for most batteries on the market. Most lithium-ion batteries can store lots of energy but cannot charge or discharge quickly. Lead-acid batteries can deliver the required amount of power, but not thousands of times over the lifetime of a car.

Ioxus, a start-up company in Oneonta, N.Y., says it is working with several automakers on testing a hybrid battery. The battery marries a device called an ultracapacitor, which bottles up something like a lightning bolt of power, with a conventional battery, which can store more energy but absorbs and discharges it at a slower rate.

The company is not alone in this area. AFS Trinity built an entire vehicle to demonstrate that ultracapacitors paired with batteries could meet the highly variable needs of a battery pack, both holding a lot of energy and accepting or discharging it quickly. The concept has not entered the commercial mainstream yet, though.

Ioxus's device involves using a carbon coating on a sheet of aluminum. One gram of the carbon, spread over a square meter of aluminum, has the surface area of a football field because it has so many pockets and pits, according to Mark E. McGough, the company's chief executive.

The technology has a second possible use on the road: in hybrid cars, for which power steering is a problem. In ordinary cars, the steering is powered by a belt connected to the continuously running engine. In a hybrid, of course, the engine is not always running. The solution is an electrically driven power steering system in place of the ordinary hydraulically driven one. The capacitor can run that electric system, Mr. McGough said.

This product is already embedded in a completely different part of the energy world: wind power. In case of a big wind storm, wind turbines need a way to change the orientation of their blades so they do not catch the wind and break. The blades are quite heavy, and pivoting them requires a big short burst of energy that they can call on even if there is a power failure. So some have turned to Ioxus's ultracapacitors, Mr. McGough said.

About the Author

www.batteries-company.com - Australia leading battery company for Acer as07b32 battery, HP elitebook 8530w battery, Asus A32-F3 Laptop Battery, Olympus camera batteries, Canon camcorder batteries, Makita power tools batteries, Dewalt power tools batteries.