There are their own energy storage requirements for different application purposes, but in summary, the common features of a good energy storage system are as follows.

① The energy stored in the unit volume is high (volume storage thermal density), that is, the system is stored as much as possible. For example, high -energy batteries are welcomed by consumers because their energy density is larger than ordinary batteries and has a long service life.

② Have good load adjustment performance. When the energy storage system is used, it is necessary to adjust the size of the energy to release the energy according to the requirements of the energy. The quality of the load adjustment performance determines the quality of the system performance.

③ Energy storage efficiency is high. Energy transmission and conversion technology cannot be separated during energy storage, so the energy storage system should be able to receive and release energy at the maximum rate without driving force. At the same time, reduce the leakage, evaporation, friction and other losses in the energy storage procedure as much as possible to maintain higher energy storage efficiency.

④ Low system cost and reliable running for a long time. If the energy storage device is unreasonable, it is impossible to be promoted and applied

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