Monday, January 15, 2018

lithium ion polymer battery

In the year 2018, rechargeable batteries have become a part of almost every electronic device in the world. Cell phones use them; tablets use them, fans, wrist watches, and some televisions also use them. 

Lithium is a chemical element that is made with atomic number 3, and it is an alkali metal (for people inclined to the study of chemistry). Under standard conditions, it is the lightest metal known to man, and this makes it very useful in industries looking to reduce the weight of their products.

A polymer is a large molecule formed by repeating units of the same compound.
A battery is a device that contains an electrical charge I itself and can release this charge to another system such as a television, remote control or a radio set. 

A lithium polymer battery can also be called a lithium-ion polymer battery which is usually abbreviated as “LiPo,” LIP,” “Li-poly,” ”lithium-poly”  and others), is a rechargeable battery made by using lithium-ion technology with a polymer electrolyte rather than a liquid one. High conductivity gel polymers form this electrolyte.

Lithium polymer battery cells were developed from lithium-ion and lithium-metal cells which underwent extensive research during the 1980s. Sony was the first brand to create a commercial cylindrical Li-ion cell in 1991, and after that, other packaging forms evolved, including the pouch format now also called "LiPo."

Lithium polymer batteries work on the principle of “intercalation” (the reversible inclusion or insertion of a molecule (or ion) into materials with layered structures.) and “de-intercalation” of lithium ions with a positive electrode material alongside a negative electrode material, with the liquid electrolyte providing a conductive medium. To prevent the electrodes from touching each other directly a microporous (pores can only be seen with the use of a microscope) separator is in between which allows only the ions and not the electrode particles to migrate from one side to the other.

The voltage of a Lithium polymer battery cell depends on its chemistry and varies from about 2.7-3.0 V (discharged) to about 4.20 V (fully charged), for cells based on lithium-metal-oxides (such as LiCoO2), and around 1.8-2.0 V (discharged) to 3.6-3.8 V (charged) for those based on lithium-iron-phosphate (LiFePO4). 

The exact voltage ratings are usually specified in product data sheets, and the cells are usually protected by the electronic circuit that stops them from overcharging or discharge under use. For rechargeable lithium ion polymer battery packs with cells connected in series, a specialized charger may monitor the charge on a per-cell basis so that all cells are brought to the same state of charge (SOC).

Lithium polymer battery cells provide manufacturers with great advantages. Some of these advantages include the fact that they can easily produce batteries of almost any desired shape. For example, space and weight requirements of mobile phones and notebook computers can be completely satisfied.

Thursday, January 4, 2018

THINGS YOU NEED FOR TRAVELLING

Travelling is one of the fun activities you can enjoy in your life. If you are fond of travelling, there are few things that you must have while you travel:

BAG:
The bag is a necessary item when it comes to travelling. This is because you can literally put anything in it safely. All you have to do is to put your items in different packages and place it in your bag. This way you can organize your things easily. There are different kinds of bags available in the market. Some are specially designed to carry your laptop safely too. So if you are travelling with your laptop, make sure you keep it safely.

FIRST AID:
Another most important thing that you must have in your bag is the first aid box. In his box, you must have an antiseptic, a bandage, painkillers and an ointment in your box. These are the things you might need any time in case of any injury. Even if someone else is injured around you, you can help them quickly before the ambulance arrives.

MUG:
Mugs are also important when it comes to travelling. The reason is that you can have your personal mug to drink beverages and there is a minimum risk of contamination. If you need a mug, Keurig size travel mug is the best for you. These mugs are best because it can keep your tea/coffee warm for so long. It is stainless which means that there is no risk of rust and you can use it freely. Some of these mugs have self-steering capacity, which means now you don’t need to have a spoon for that. They are giving discounts on the New Year.

POWER BANK:
Power bank is a device which stores charge which can be used to charge the batteries where no electricity is available. The best thing about this power bank is that you don’t have to worry about charging your battery at all. Now you can attach your cell with a cable and charge it. This device is not that expensive which means that you can afford it easily too. This is a thing that you must have while travelling. Now a day, the bags are designed in a way that these power banks are attached inside the bag, so that you can charge your phone easily.

LOTION AND SUNSCREEN:

If you are planning to spend your vacations on a beach or some warm area, the most important thing that you must have is the sunscreen. No matter what the climate is, you must use sunscreen while you get out of your house. There is a misconception in the minds of people that you only need sunscreen in the summer. This is not true at all. The sunrays will always damage your skin cells no matter what the season is. People who have a warm undertone get tanned in the sunlight and people with cool undertone are prone to skin cancer. So make sure to keep it with you while travelling.