Time:【2018-7-20】 Read【1452】【Print】【Back】
Battery is a device that directly converts chemical energy into electrical energy, is designed rechargeable, and recharging is realized through reversible chemical reactions, usually referring to lead-acid batteries, which is a kind of battery and belongs to the secondary battery.
How it works: when charging, the external electrical energy is used to regenerate the internal active substance, the electrical energy is stored as chemical energy, and the chemical energy is converted into electrical energy output again when it needs to be discharged, such as the mobile phone battery commonly used in life.
It uses a lead plate grid filled with spongy lead (also known as a lattice) as the negative electrode, a lead plate grid filled with lead dioxide as the positive electrode, and a dilute sulfuric acid with a density of 1.26--1.33g/mlg/ml as the electrolyte.
When the battery is discharged, the metal lead is the negative electrode, and the oxidation reaction occurs to generate lead sulfate; Lead dioxide is the positive electrode, and a reduction reaction occurs to form lead sulfate.
When the battery is charged with direct current, the two poles generate elemental lead and lead dioxide, respectively. After removing the power supply, it returns to the state it was in before the discharge, forming a chemical battery. Lead battery can be repeatedly charged, discharged, its monomer voltage is 2V, the battery is composed of one or more monomers of the battery pack, referred to as the battery, the most common is 6V, and other 2V, 4V, 8V, 24V batteries. For example, the accumulator battery (commonly known as the battery cell) used in the car is a battery pack of 6 lead batteries connected in series into 12V.
For traditional dry-charged lead-acid batteries (such as car dry-charged batteries, motorcycle dry-charged batteries, etc.) after a period of use, distilled water should be supplemented to maintain a density of about 1.28g/ml of dilute sulfuric acid electrolyte; For Maintenance-Free batteries, distilled water is no longer required until the its end of life.
