Battery pinyin is Di, NCH; cell (commonly known as fire battery) performance parameters are mainly electric potential, capacity, specific energy and resistance. Electric potential is equal to the unit positive charge from the cathode through the shift to the positive electrode of the battery when the battery internal, non static electricity (chemical force) work. Chemical properties of electromotive force depends on the electrode material, has nothing to do with the size of the battery. Batteries to store energy Co., the total amount of charge battery can output to the battery capacity, usually by ampere unit, an important parameter which is battery. In the cell reaction, 1 kg of reactive substances produced by the theory of specific energy. But the AEG LI-ION 14.4V Battery than energy than theoretical specific energy of small. Because the reactant in the battery by the battery is not fully reaction, at the same time, the internal resistance of the battery will cause the electric potential drop, so often the high specific energy of the battery as energy battery. The contact area of the electrode and electrolyte is larger, the smaller the resistance. The battery made that can produce electric current; primary batteries (also known as: a battery) in discharge after the discarded, such as common dry battery; battery (also known as: two battery) after discharge through the way of charging reactive substances activate and continue to use, such as common lithium ion battery.
The use of a battery as an energy source, can be obtained with stable voltage, stable current, long time stable power supply, current affected by the outside is very small, and the battery has the advantages of simple structure, convenient carrying, charging and discharging operation is simple, is not influenced by the external temperature and climate, stable and reliable performance, in all aspects of modern social life play a large proportion of, for example: mobile phone, watches and other electronic digital portable equipment!
Used in ancient times, humans may have been constantly in research and testing “electric” things like this. A being that clay bottle has a history of thousands of years was discovered in 1932 near Baghdad in iraq. It has a plug in a copper cylinder in the iron strip may be used to store static use, however the bottle’s secret may never be known. No matter making the clay bottle ancestors whether know about electrostatic thing, but can be sure of is that the ancient Greeks knew. They know that if a piece of amber friction, can attract light objects. In eighteenth Century forty or fifty years, research on improving the power generation device and atmospheric phenomena, has attracted extensive interest of physicists,
In 1745, Prussia Kleist using wire will be friction plays electric to glass bottles equipped with nails. When he touched the nail by hand, by a violent blow.
Possibly inspired by the find, Mason Brock of the Leiden University in Leiden in 1746 invented bottle collecting charge “”. Because he saw finally collected electricity is very easily in the air gradually disappeared, he want to find a way to save electricity. One day, he was suspended in the air with a barrel, and the barrel with the motor connected with the other, with a copper wire is led out from the barrels, immersed in a glass bottle filled with water, he made an assistant hand glass bottle, Mason Brock aside all shook up the motor. When his assistant will not be in another hand with the barrel hit, he suddenly felt a strong shock, cried. So Mason Brock and assistant swap, lets the assistant shook his hand motor, a water bottle, the other hand to touch the barrel.
In 1780, Italy anatomist Galvani (Luigi Galvani) in frog, two hands respectively with different metal instruments, inadvertently also touch on the frog’s lap, the frog leg muscles twitched as if immediately, by the current stimulus, if only with a metal instrument to touch the frog, no this reaction. Galvani thought, this is like for an electric animal body internally generated, which he called “biological electricity”.
Galvanic discovery aroused great interest of physicists, they compete to repeat cangue Galvani experiments, trying to find a method for generating current, the Italy physicist volts in many experiments that: galvanic “bioelectricity” say is not correct, the frog muscle works. In order to prove their own point of view, volts to two different metal pad soaked in various kinds of solution test. The results found that, these two kinds of sheet metal, as long as there is a solution and the chemical reaction takes place, between the metal sheets can produce current.
1799, V put a piece of zinc plate and a piece of tin in brine, found two pieces of metal wire connection in the current through the. Then, he took many pad soaked in brine flannel or paper between the zinc sheet and the silver plate, flat stacked up. Touch the ends, will feel a strong current stimulation. V using this method successfully made the world’s first battery volts stack — “”. This “volt battery stack” is actually a series of. It became the early experiments on electricity, the power source the telegraph.
In 1836, Britain’s Daniel was modified to “volt electric pile”. His use of dilute sulphuric acid as the electrolyte, solves the problem of cell polarization, produced the first polarized, zinc and copper battery can maintain the balance of current thereafter, these batteries are voltage drop with the increase of the using time of the problem.
When used for a period of time after the battery voltage drops, the voltage of the battery recovery. Because the battery can be charged, and can be used repeatedly, so it is called “battery”.
However, no matter what kind of batteries are required between two metal plates filling liquid, so the transportation is very convenient, especially the battery used in liquid is sulfuric acid, in a dangerous move.
Also in 1860, French Lakeland scholar (GeorgeLeclanche) invented the world widely used batteries (the predecessor of carbon zinc batteries). Its anode is alloy of mercury and zinc (zinc bar – volt prototype battery cathode, anode production proved to be as one of the best metal material), and its anode is based on a porous glass containing a mixture of manganese dioxide and carbon crushed the. This mixture is provided with a carbon rod as a current collector. Anode rod and anode cup were immersed in the solution of ammonium chloride as electrolyte in. This system is called “wet battery”. Lakeland scholar manufacturing battery although simple but cheap, so until 1880 to be improved “dry” replace. The negative electrode is improved into zinc pot (i.e. battery), the electrolyte into a paste and non liquid, basically this is now known as the carbon zinc batteries.
In 1887, the British Helson invented the earliest stem cell. Electrolyte dry battery for the paste, does not leak, easy to carry, so it has been widely used.
In 1890 Edison (Thomas Edison) invented the rechargeable nickel iron battery.