Battery cooling device with fire protection material, battery module with fire protection material, and aircraft

A battery cooling device for cooling at least one battery cell (1) of an electrically driven aircraft, the battery cooling device comprising:

• a latent heat store (3),
• a multilayer system surrounding the at least one battery cell, said multilayer system comprising at least two layers (2, 4) of fire protection material and a layer of a phase change material that forms the latent heat store (3),
• the at least two layers of the multilayer system include an inner layer (2) facing the at least one battery cell (1), and an outer layer (4) facing surroundings, the inner and outer layers are formed of the fire protection material, and a middle layer (3), which is disposed between the inner layer (2) and the outer (4) layer, is formed by the layer of the phase change material of the latent heat store (3), and
• the fire protection material (3) comprises at least two layers, in which a first layer (2.1, 4.1) of the fire protection material is mechanically stable in form and a second layer of the fire protection material (2.2, 4.2) comprises hydrated material.