According to the energy storage method, energy storage can be divided into three categories: physical energy storage, chemical energy storage, and electromagnetic energy storage. Among them, physical energy storage mainly includes pumped water storage, compressed air energy storage, flywheel energy storage, etc., and chemical energy storage mainly includes lead Acid batteries, lithium-ion batteries, sodium-sulfur batteries, flow batteries, etc. Electromagnetic energy storage mainly includes supercapacitor energy storage and superconducting energy storage.
battery energy storage
In high-power occasions, lead-acid batteries are generally used, which are mainly used for the storage of surplus energy in emergency power supplies, battery vehicles, and power plants. In low-power occasions, rechargeable dry batteries can also be used: such as nickel-metal hydride batteries, lithium-ion batteries, etc.
An all-vanadium redox flow battery is a large-scale energy storage battery that stores and releases the power generated by wind or solar energy through the change of the valence state of vanadium ions to realize the reciprocating conversion of chemical energy to electrical energy. bank". The vanadium battery industry used in power station peak shaving and wind energy storage in developed countries such as the United States and Japan has developed rapidly, and the technology has basically matured. [7] Compared with lithium batteries, the biggest advantage of all-vanadium flow batteries is that they do not burn or explode.