New energy is gradually replacing traditional energy and becoming a new leader. Promoting new energy is a need for social development and environmental protection. Compared with traditional ones, new batteries used in energy storage systems have begun to develop in a high-tech direction, with longer service life and energy storage efficiency. They have reached a critical turning point.
The main types of energy storage batteries currently on the market include lithium-ion batteries, lead-acid batteries, and sodium-sulfur batteries.
Lithium-ion battery: The advantages include: First, it has a long service life and can be used repeatedly. Secondly, it has extremely high energy storage density and high energy storage conversion efficiency, which can almost achieve complete conversion. However, it also has safety problems. Charging and discharging at large currents and short circuits will lead to high temperatures, and even cause battery explosions.
Lead-acid batteries: They are easily broken during use, mainly in the following aspects: First, lead-acid batteries have serious surface corrosion, especially at the positive electrode. Second, battery temperature will be increased, and charge and discharge will be affected if the battery can’t control heat effectively. Heat generation speed is faster than heat dissipation, causing safety problems. Thirdly, if the sulfuric acid content on the upper edges of the positive and negative plate, it seriously shortens the battery life.
Sodium-sulfur battery: It can work under high-temperature conditions (temperature around 300°C). The biggest advantage of sodium-sulfur batteries is that they have extremely high energy conversion rates and can be discharged and charged with high power. This gives sodium-sulfur batteries extremely short charging and discharging times, which has obvious advantages. However, when the requirements for working temperature are high (300 ~ 500 ℃), safety accidents may occur due to ceramic damage. Users need to select more suitable energy storage batteries based on their performance and actual needs, so as to ensure the stability and safety of the system operation and generate revenue.
