Battery protection method, battery device and storage medium

The invention discloses a battery protection method, which comprises the following steps of: defining a voltage stage for battery operation, and defining a maximum charging voltage of a battery by the voltage stage; recording battery charging times and battery charging hours at high temperature; and switching the voltage level of the battery according to the charging times of the battery and the charging hours of the battery at the high temperature. The invention also provides a battery device and a storage medium. Therefore, the maximum charging voltage can be limited, the health of the battery is maintained, and the service life of the battery is prolonged. 一种电池保护方法，所述方法包括：定义电池运行的电压级数，所述电压级数用于限定所述电池的最大充电电压；纪录电池充电次数及高温下电池充电时数；根据所述电池充电次数以及所述高温下电池充电时数切换电池的所述电压级数。本发明还提供一种电池装置及存储介质。这样能够限定最大充电电压，从而维持电池的健康，进而延长电池的寿命。