The power source of an Electric Car is a battery, and many of the batteries used today are lead-acid batteries, which are composed of a shell, plates, separators, and electrolyte. Let me introduce to you what are the working principles of Electric SUV Car batteries?
Charging principle: Charging is the reverse process of discharging. When charging, an external DC power supply should be connected between the positive and negative plates of the battery to restore the active material consumed by the positive and negative plates during discharge, and the positive current of the external power supply will flow in from the positive plate of the battery, through the electrolyte and The negative plate flows back to the negative terminal of the external power supply. The following reaction occurs inside the storage battery: on the negative plate, due to gaining electrons, divalent lead ions are neutralized into lead, and attached to the positive plate in a solid state. When the electrons are lost on the positive plate, the divalent lead ions in the electrolyte near the plate and in a free state will continuously release two electrons to make up for it. When it becomes tetravalent lead ions, it will immediately combine with hydroxide ions in the water. , to generate transition state and dissociated substances and free hydrogen ions.
Discharge principle: When the external circuit is connected to the load, under the action of the potential difference between the positive and negative plates of the battery, the electrons on the negative plate will enter the positive plate through the load to form a current. At the same time, a chemical reaction occurs inside the battery, and each lead atom on the negative plate releases two electrons to become lead positive ions. At the same time, there are excess electrons on the negative electrode. Under the action of electromotive force, these electrons will continue to flow into the positive electrode through the external circuit. to form a current. Inside the electrolyte, due to the ionization of sulfuric acid molecules, there are hydrogen cations and acid radical ions, and lead sulfate molecules are formed to attach to the negative electrode.
The battery work of an Electric SUV Car is nothing more than two situations of discharging and charging. As long as you understand these two principles, the working principle of the battery will be very clear. I believe that after you understand the working principle of the battery, you will be able to follow up on the maintenance and use of the battery. It will also make you feel better!