Solar battery is the application of ‘battery’ in solar photovoltaic power generation. Currently, there are four types of lead-acid maintenance-free batteries, ordinary lead-acid batteries, gel batteries and alkaline nickel-cadmium batteries. At present, the widely used solar batteries in China are mainly lead-acid maintenance-free batteries and gel batteries. These two types of batteries, because of their inherent “free” maintenance characteristics and the characteristics of less pollution to the environment, are very suitable for reliable performance. Solar power systems, especially unattended workstations.
Ordinary lead-acid batteries are mainly suitable for maintenance or low-grade occasions due to the need for frequent maintenance and their large environmental pollution.
Alkaline nickel-cadmium batteries have good low temperature, overcharge and overdischarge performance, but due to their high price, they are only suitable for special occasions.
With the widespread use of solar photovoltaic power generation systems, more and more people’s attention has been paid to the battery as a matching battery.
Solar battery life
1. Ordinary solar battery
The plates of ordinary solar batteries are composed of lead and lead oxides, and the solution is an aqueous solution of sulfuric acid. Its main advantages are stable voltage and low price. The disadvantage is that the specific energy is low, the service life is short and the daily maintenance is frequent, and the service life is about 1 year.
2. Dry-charged solar battery
Its full name is dry-type charged lead-acid battery. Its main feature is that the negative plate has a high power storage capacity, and in a completely dry state, the obtained power can be stored within two years. When using, just add electrolyte, it can be used after 20-30 minutes, and the service life is about 2-3 years.
3. Maintenance-free solar battery
Due to the advantages of its own structure, the maintenance-free solar battery consumes a very small amount of electrolyte, and basically does not need to replenish distilled water during its service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge. The service life is generally twice that of ordinary solar batteries. There are also two types of maintenance-free batteries on the market. The first type requires one-time addition of electrolyte at the time of purchase and does not require maintenance after use. The other type is that the battery itself has been filled with electrolyte and sealed when it leaves the factory. With supplementary fluid, the useful life is about 4 years.
Post time: Nov-14-2022