Batteries, electricity, equipment, converted into electrical energy, is a set of modules, electrical connection is a direct current source due to the role of chemical energy. Is now generally is a single battery for laptopcell, and with the alkaline batteries used in flashlights and portable tape recorders term, but strictly speaking, the battery cells, including those from related together in a container and a source terminal in a given DC voltage. A unit consists of two different substances, a positive and negative lead electrode, current, third material, electrolyte, which acts chemical electrodes. The two electrodes connected through an external circuit, such as () a copper wire, electrolyte, as the electron transfer between the electrode ion conductor services. The use of voltage or electromotive force depends on the chemical properties of substances, but not by the quality and size of the electrodes or electrolytic effects.
Such batteries are classified as dry or wet cells, cell. Focused on stem cells, electrolyte in a porous medium or otherwise restrict flow. In the free flow of wet cells in the liquid electrolyte and mobile. Batteries in general can be divided into two types, and non-rechargeable rechargeable batteries or disposable. Disposable batteries are also used until the completion of chemical-induced changes in electricity supply, the original battery will be rejected, when the battery. The per capita disposable batteries are used in ultra-small mobile devices, and only occasionally, or very far from the use of alternative energy sources, or have low power consumption. Rechargeable batteries can be used as secondary batteries, in order to dehydrationIBM ThinkPad R50 battery，IBM ThinkPad R51 battery， IBM ThinkPad R52 battery will be reused. This is the use of external current, it will be by the chemical changes that occur in the realization of the reasons for the application to withdraw. In the external device, known as a current or charger charger supply.
A battery as the battery is usually wet cell type, that is, it uses a liquid electrolyte can be charged many times. This battery consists of several cells in series. Each unit containing positive and negative plates alternating series, separated by a liquid electrolyte. The cell formation of positive plates to form a positive as a negative anode plate. In the survey is that in the unloading process, through the battery current, forced in the opposite direction, so that chemical reactions occur usually need to re-discharge, so that electrical energy into the cells to reverse the operation stored chemical energy. The battery is where it is used to start internal combustion engine cars, the biggest operation. Improvements in battery technology of the vehicles in commercial use practices that lead to the battery-powered electric propulsion system in place.
For battery electrodes and a variety of applications in a variety of electrolytes. Cell is linked by a carbon and zinc (as well as other types of stem cells, batteries), is used as a flashlight, lighting, electric power and pocket devices in various ways such as stem cells, the size of radios and CD players. Alkaline battery is a highly efficient battery type is both economical and reliable. In alkaline batteries, alkaline solution of the aqueous solution as electrolyte, the duration of stem wholesale electronics cells than in the low-zinc anode corrosion rapidly under acidic conditions than in basic conditions. In the United States is commonly used lead-acid batteries. Expensive type of lead as a gel battery (or gel batteries) lead-acid battery contains a semi-solid electrolyte, in order to prevent leakage. More rechargeable batteries, including several stem cell types, it is sealed unit, and therefore useful devices such as mobile phones and notebook computers. This species cells (according to the power and the cost of order), for example, nickel cadmium (Ni-Cd or Ni-Cd), nickel metal hydride (NiMH) and lithium ion (Li-ion) batteries.
There is evidence that the original battery has been in Iraq and Egypt, 200 years BC, gold plating and the use of precious metals. In 1748, Benjamin Franklin, used to describe an array of battery-charged glass term. Most historians date the invention of batteries around 1800, when the experiment, Volta, led by electricity from chemical reactions between dissimilar metals generate. Different combinations of metal and electrolyte experiments to sit down in the next 60 years. 60 years in the 19th century the development of Xie France, a carbon-zinc shower, non-rechargeable, it is a powerful, simple to produce a reasonable shelf life. Even in the 19th century, 60′s, Plante invented the lead-acid batteries the East. This is a short shelf-life, as well as in 1881 Emil Faure side reactions lead oxide battery faster, more efficient and positive plate electrolyte mixed development. In 1900, Edison developed the nickel batteries, and nickel-iron battery in 1905. During World War II, the production of mercury batteries. The small alkaline battery was introduced in 1949. In the 20th century, 50 years to improve the development of alkaline manganese batteries. In 1954, the first solar cells or solar cell introduction, and the hydrogen-oxygen fuel cell in 1956 is introduced. 20th century 60s gel electrolyte lead-acid batteries of the invention. Lithium-ion batteries, wafer thin, the portable computers, mobile phones, and space probes have been made in the 20th century, 90 years. Computer chips and sensors now help extend battery life, speed up the loading process. battery for digital Sensors monitor the air as the chemical reactions that lead-acid battery charging, warm micro-chip controls charging, so the temperature of the rapid power flow of power, this battery is empty, then slowly more fully recharge the battery. Another source of technical progress is nanotechnology, research shows that twice as much carbon nanotube battery life of a conventional battery.