Different applications have their own specific energy storage requirements, but in general, a good energy storage system shares the following characteristics:
① High energy storage density per unit volume (volumetric energy density), meaning the system can store as much energy as possible. For example, high-energy batteries are popular with consumers because of their higher energy density and longer lifespan compared to ordinary batteries.
② Good load regulation performance. When using an energy storage system, it needs to adjust the amount of energy released according to the user's requirements. The quality of load regulation performance determines the overall performance of the system.
③ High energy storage efficiency. Energy storage involves energy transfer and conversion technologies, so the energy storage system should be able to receive and release energy at the maximum rate without requiring excessive driving force. At the same time, it should minimize losses such as leakage, evaporation, and friction during the energy storage process, maintaining high energy storage efficiency.
④ Low system cost and reliable long-term operation. If the energy storage device is not economically viable, it will not be widely adopted.
