The working principle of the Solar Energy Storage Battery: when charging, it uses external electrical energy to regenerate the internal active material, stores the electrical energy as chemical energy, and converts the chemical energy into electrical energy for output when it needs to be discharged, such as mobile phone batteries commonly used in life.
It uses a lead substrate grid filled with spongy lead (also known as a lattice) as a negative electrode, a lead substrate grid filled with lead dioxide as a positive electrode, and dilute sulfuric acid with a density of 1.26--1.33g/mlg/ml is used as the electrolyte. When the Solar Energy Storage Battery is discharging, metal lead is the negative electrode, which undergoes an oxidation reaction to generate lead sulfate; lead dioxide is the positive electrode, which undergoes a reduction reaction to generate lead sulfate. When the Solar Energy Storage Battery is charged with direct current, elemental lead and lead dioxide are formed at the two poles, respectively. When the power source is removed, it returns to its pre-discharge state, forming a chemical Solar Energy Storage Battery. The lead-acid Solar Energy Storage Battery can be repeatedly charged and discharged. Its single-cell voltage is 2v. The Solar Energy Storage Battery is a Solar Energy Storage Battery pack composed of one or more cells, referred to as Solar Energy Storage Battery. The most common ones are 6v and 12v batteries. Others include 2v, 4v, 8v, 24v Solar Energy Storage Battery. For example, the Solar Energy Storage Battery used in the car (commonly known as the Solar Energy Storage Battery) is a Solar Energy Storage Battery pack of 6 lead-acid batteries connected in series to form a 12v Solar Energy Storage Battery.
For traditional dry-charged lead batteries (such as automobile dry-charged batteries, motorcycle dry-charged batteries, etc.), distilled water should be added after a period of use to keep the dilute sulfuric acid electrolyte at a density of about 1.28g/ml; it will be used until the end of its life. The addition of distilled water is no longer necessary.
The chemical reaction equation is as follows:
Overall reaction: pb(s) + pbo2(s) + 2 chi h2so4(aq) reversible symbol 2pbso4(s) + 2h2o(l)
When discharging: negative pb(s)-2e-+so42-(aq)=pbso4(s)
Positive pbo2(s)+2e-+so42-(aq)+4h+(aq)=pbso4(s)+2h2o(l)
Total pb(s)+pbo2(s)+2h2so4(aq)=2pbso4(s)+2h2o(l)
During charging Electrolytic cell
Cathode pbso4(s)+2e-=pb(s)+so42-(aq)
Anode pbso4(s)+2h2o(l)-2e-=pbo2(s)+so42-(aq)+4h+(a