Formation method of sodium battery, sodium battery and electric equipment

The invention provides a formation method of a sodium battery, which comprises the following steps: (1) standing and aging an assembled sodium battery, then performing normal-temperature formation at the temperature of 20-40 DEG C, and then performing secondary aging at the temperature of 45-60 DEG C; and (2) carrying out charge-discharge circulation on the sodium battery subjected to secondary aging at 20-40 DEG C, and then carrying out tertiary aging at 35-65 DEG C for 12 hours to 30 days. By adopting the formation method, the components and microstructures of the inner layer and the outer layer of the obtained negative electrode interface film of the sodium battery can be optimized at the same time, so that the normal-temperature cycle performance of the sodium battery is better improved. The invention further provides the sodium battery obtained by adopting the formation method and electric equipment adopting the sodium battery. 本申请提供了一种钠电池的化成方法，包括：(1)将装配完成的钠电池进行静置陈化，之后在20-40℃的温度下进行常温化成，然后在45-60℃的温度下进行二次陈