Battery energy storage device

The invention provides a battery energy storage device, which relates to the technical field of battery energy storage equipment, and is designed for solving the problem of relatively high cost of cooling a battery by an existing battery energy storage device. The battery energy storage device comprises a tower drum with a containing cavity, an air inlet communicated with the containing cavity isformed in the lower end of the tower drum, and an air outlet communicated with the containing cavity is formed in the upper end of the tower drum; and thecontaining cavity is used for containing a battery. According to the battery energy storage device provided by the invention, the battery can be cooled by utilizing natural circulation ventilation, a mechanical power ventilation device is not needed, and energy is saved. 本发明提供了一种电池储能装置，涉及电池储能设备技术领域，为解决现有电池储能装置对电池进行冷却降温的成本较高的问题而设计。该电池储能装置包括具有容纳腔的塔筒，塔筒的下端设置有与容纳腔连通的进风口，塔筒的上端设置有与容纳腔连通的出风口；容纳腔用于容纳电池。本发明提供的电池储能装置利用自然循环通风即可实现对电池的冷却降温，无需机械动力通风装置，节约能源。