钠离子电池是动力电池还是储能电池？

What is the energy form of Sodium-ion Battery?    

钠离子电池是兼具动力电池和储能电池双重属性的复合型电池，可根据电芯工艺、倍率参数、结构设计，适配两类核心场景。作为动力电池使用时，钠电池具备大倍率放电、响应速度快、动力输出稳定的特点，可适配两轮电动车、低速四轮代步车、轻型工程机械等低速动力场景；作为储能电池使用时，其循环寿命长、成本低、安全稳定、适配长期静置，完美适配大型电网储能、户用光伏储能、工商业储能、基站备电等场景。相较于单一属性电池，钠电池场景适配性更广，产业容错率更高，是为数不多的可兼顾动力与储能的新能源电池品类。

Sodium-ion Battery belongs to the typical electrochemical energy storage form, which is one of the most widely used energy storage methods in the new energy field at present. Its energy conversion logic is bidirectional and reversible: in the charging stage, the electrical energy output from the power grid, photovoltaic and wind power is converted into the chemical energy inside the battery through electrochemical action, and stored in the form of sodium ions intercalated into the electrode material to complete energy storage; in the discharging stage, the chemical energy stored inside the battery is reconverted into stable electrical energy and output outward to supply power for various electrical equipment and power grid loads. This energy storage method has fast response speed, flexible start and stop, no need for complex mechanical structure, and can adapt to short-term peak shaving and long-term energy storage, which is the core technical route of new power system energy storage.