At present, the existing energy storage technologies include physical energy storage such as pumping and flywheel, electromagnetic energy storage such as super capacitor, and battery energy storage based on electrochemical principle. Considering factors such as discharge time and cost, battery becomes the first choice for energy storage in photovoltaic power station. The existing batteries include lead-acid batteries, lithium batteries and vanadium flow batteries. Lead acid battery has a history of more than 100 years, and is widely used for its low price and stable performance. But the cycle life of lead-acid battery is very low, generally 300-600 times; In addition, the environmental pollution caused by lead in the process of battery manufacturing, use and recycling has been unacceptable in modern society. The all vanadium flow battery is a new type of energy storage battery. Its power depends on the area of the cell, the number of stacks and the number of series and parallel connections, and its capacity depends on the volume of electrolyte. It is suitable for large capacity energy storage, and has almost no self discharge and long cycle life. The cost of all vanadium redox flow battery is very expensive, and its conversion efficiency and stability need to be improved. Moreover, all vanadium redox flow battery needs pump for fluid control, which increases the cost. Lithium battery has high voltage, wide working temperature range, high specific energy and efficiency, and low self discharge rate. The safety and life can be improved by using protection and equalization circuits. Therefore, considering the advantages and disadvantages of various batteries, lithium batteries have become the first choice for energy storage power stations due to their relatively mature industrial chain, safety, reliability and environmental friendliness.

Shenzhen Topband Battery Co., Ltd.，established in 2006, is a wholly-owned subsidiary of Shenzhen Topband Co., Ltd. (002139.SZ). We focus on lithium iron phosphate batteries,with independent research and development in cells and BMS. With the ability to integrate the entire industry chain, we are committed to providing customers with one-stop lithium battery solutions and services. Our quality products are widely used in energy storage and light power.