With the growth of wind and solar installed capacity, the intermittent news and instability of the overall output of power generation equipment have increased, and it is difficult to meet the demand for peak and frequency modulation by thermal power units alone. Therefore, the demand for energy storage in the power system continues to increase, lithium battery in the energy storage system is one better solution. According to the difference between the installation location and the main body, the application scenarios can be divided into power consumption side, power generation side, and power grid side. Pumped storage is not enough to meet the demand. The installed capacity of pumped storage has harsh geographical conditions and a long construction period, making it difficult to meet current needs. Lithium battery energy storage has comparative advantages. Lithium batteries have high energy density, high charging and discharging efficiency, and flexible use scenarios. Other energy storage methods are less suitable for use due to their physical and chemical characteristics or technological maturity.
Large scale energy storage system is an important part of the future new energy system and smart grid, and an energy storage battery is a key to the large-scale energy storage system. The lithium-ion battery wholesale has the advantages of high energy density, long cycle life, low self-discharge rate, no memory effect, and green environmental protection. It has broad application prospects in the field of power grid energy storage. At present, lithium battery technology has different types, such as lithium cobalt oxide, lithium manganate, lithium iron phosphate, lithium titanate, and so on. From the perspective of market application prospect and technical maturity, lithium iron phosphate battery is recommended as the first choice in the field of power grid energy storage.