Currently, there are four main types of batteries used in solar power generation systems on the market, namely lead acid batteries, gel batteries, ternary lithium batteries and lithium iron phosphate batteries. .
1. Lead-acid battery: The plates of lead-acid batteries are composed of lead and lead oxide, and the electrolyte is an aqueous solution of sulfuric acid. The main advantages of lead-acid batteries are that the voltage is relatively stable, the price is relatively cheap, and the safety is high; the disadvantage is that the battery life is relatively short and the volume is much larger than ordinary batteries.
2. Gel battery: Gel battery is an optimized version of lead-acid battery, which has the advantages of being maintenance-free and low-maintenance. Internally, colloidal electrolyte is used instead of electrolyte.sulfuric acid trolyte to improve. energy storage, discharge and security. Performance and lifespan have been improved; in addition, gel batteries can be used in the temperature range of -40°C to 65°C, and the low temperature performance is relatively good in the north. Alpine areas or tropical areas with higher temperatures, gel batteries are good. At the same time, its seismic performance is also very good, it can be used safely in various harsh conditions, and its service life is more than twice that of ordinary lead. batteries.
3. Ternary lithium battery: Ternary lithium battery has high specific energy, small size, fast charging and high price. Its lifespan is more than twice that of lead-acid batteries and its operating temperature range is $1,000. -15℃-45℃. However, theSafety of ternary lithium batteries is poor. If the battery is not internally stable or the production is not standardized and does not meet standards, the battery is most likely to explode during the overcharging process or in a high temperature environment.
4. Lithium iron phosphate battery: Lithium iron phosphate battery has high specific energy, small size, fast charging, strong stability and wide temperature range, but the price is also relatively high among all batteries. As technology advances, lithium iron phosphate batteries are increasingly used in applications.