Sunday , January 24 2021

Learn more about currents – why batteries should not be fully charged and empty? / Article / LSM.LV



The world is working to improve the capacity of the battery to store energy. Also involved is Kristaps Vitols, a researcher in Latvia. In the LTV show, the Cognitive Impulse, says the life span of the battery should not be fully charged and completely empty.

How is the victory of civilization in exchange for electricity?

  • 6th century BC in ancient Greece. Jael discovered static electricity by rubbing amber pieces on the wool.
  • In 1771, an Italian physician, Luigi Galvani, noted that the stick was shaken in her leg when she was facing her.
  • In 1800, the Italian physicist Alesandro Volta created the first electrical battery.
  • In 1820 André Marie Amper realized that the magnetic field was affected.
  • In 1831, Michael Faraday discovered electromagnetic induction and laid the foundations for the creation of an electric motor.
  • In 1879, American inventor Thomas Edison patented the first incandescent bulb.

It is said that, at a time when Faraday showed a breakthrough in his country's premier, the politician asked if he had any use of it. Faradey then determined – I do not know, but I'm confident that it will be possible to charge taxes.

Meanwhile, in some other science, the legendary personality of Nikola Tesla went differently – he had the idea of ​​making electricity to everyone. The basic idea of ​​Tesla's role is that an object in the city center generates electricity, but bulbs or any other unwanted electrical equipment gets the necessary energy from it. The problem was that the number of users was very small. So, the idea of ​​Tesla Rolls at least now seems to be a costly and inefficient way of delivering electricity to consumers. Who knows, maybe the idea of ​​electricity available as a wireless internet is not the right time.

Much better with James M. Maxwell than his ideas go to work. His idea of ​​how the mobile magnet generates electricity has made a big breakthrough in the development of civilization. The magnet triggers electrons like water. By the way, accurate electrical energy is often used for such a comparison, and where there is water there are current or current and all related units of measurement.

Basic Principles of Electrical Physics

What is the current of the current? These are the electrons – small particles in small atoms. One should keep in mind some basic principles of physics to understand why electrons are shaped like electricity.

Physicists illustrate electrons like beads, which, as in any case, have, though very neglected but still attractive forces, but unlike others, have a very pronounced rejection power. Since electrons without electrons have other particles – protons, they interact with each other. Usually, as there are no protons in the atom, so many of one electron, and we do not feel any special electrical discharge. By the time, for example, when you rub one surface on another, we get electrons from one surface to another, and then the number of particles changes, they begin to attract particles of other objects. And all this can be measured as a current.

Electric charges can be transferred from one surface to another. For example, this happens every time hair is given, synthetic clothing, even if it pulls the feet to the ground and touches metal objects.

The electromagnetic field, on the other hand, determines whether the electron will be moved as a bridge in the form of bridges and will generate direct current or will fly here 50 times per second, generating alternating current.

Energy storage research

All types of generators currently available, other than solar energy, generate alternating current. However, only direct current can be accumulated. Direct current is the form in which the energy is also stored in batteries, and the types of batteries are as different as their tasks: to manage the devices, to accumulate the generated energy.

The way how long and how long batteries can store energy directly depends on the chemical elements in them. On the other hand, the battery charger affects the behavior of these elements. "At the moment when they accumulate energy, some ions move from one side to the other, and the current does not flow in. When charging the battery, the ions are pointing to the other side and wait for it to connect the external load and the current starts to run in the opposite direction, and the ions they are moving backward, which is why they are on the second level of balance, "explains Kristaps Vitols, researcher at the Institute of Industrial Electronics and Electrical Engineering at the Technical University of Riga (RTU).

When the batteries become empty or do not do their job, they do not make the necessary reactions so that the particles are not in the right places. "It's not OK to throw the battery all the way, because the ions went to the other side, they settled in their place, and the more they stayed there, the more they wanted to stay there, and then the batteries began to fall into the capacity. accumulate so much and can not work that long, "Vitol says.

This means that the battery should not be fully charged and fully emptied. "In one case, the ions remain on one side and the other on the other side.

Both of these extreme points degrade the battery, "explains the researcher.

Not so long ago, it was believed that batteries should not be partially recharged, because they figuratively recalled their condition and did not even try to be full. It came out – it's neither myth nor truth, because everything is in it from where batteries are created. "Those built-in devices, such as lithium-ion batteries, have no memory effect. In the past, nickel-cadmium batteries were remembered – if they were half charged, then only half worked," Vitol says.

To further enhance the capacity of battery storage, the world does not make millions in this industry. In Latvia, Kristaps Vitols is one of those scientists who, looking for the best battery solutions, care about them just as well as a living organism. "There is no electronics, just chemistry and material science, put together that the batteries last longer, better and cheaper. When transplanted, cells must be combined with scanners that take care of each cell's well-being," explains the researcher.

The richness of the battery depends on the temperature, but in order to have the accumulating electrons, they must be able to move.


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