Power battery refers to the storage battery that can directly or indirectly provide power for electric vehicles, and is the heart of electric vehicles. The general term for rechargeable chemical energy storage appliances such as lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, lithium batteries and supercapacitors, which belongs to the category of secondary energy.
When a battery is discharged, it generates heat and releases its charge. These charges can be stored on electrodes or through chemical reactions, or they can be released in the form of light. The electrolyte is a conductive liquid whose function is to extract ions from the electrolyte to form an electric current. The main components of the electrolyte include inorganic substances such as lithium salts and organic alkali solutions, and organic solutions composed of water and other organic substances; in addition, other substances such as additives and stabilizers participate in the reaction process.