Abstract: A method for cooling a battery for an electrically powered aircraft, wherein the battery has battery cell(s) and a battery cooling device with a latent heat store. The method includes: A) transferring a first amount of heat from the battery cell to the latent heat store, causing a phase transition in the phase change material, B) removing the battery from the aircraft, C) establishing an operative connection of the battery cooling device to a cooling circuit of a separate second cooling device, D) passing a flow of a coolant through the cooling circuit, E) transferring a second amount of heat from the latent heat store to the coolant, thus causing a phase transition to occur in the phase change material, and F) disconnecting the battery cooling device from the cooling circuit. Step E and/or F are carried out at least partially simultaneously with a charging process of the battery.

Abstract: A battery cooling device (6) for cooling at least one battery cell (5) of an electrically operated aircraft is provided, the battery cooling device (6) having a first cooling device (7, 8) configured for absorbing a first amount of heat at least from the battery cell (5) in an electrical discharging process and thereby cooling it. The first cooling device has at least one latent heat storage unit with a variable state of aggregation. The battery cooling device (6) also includes a second cooling device (9), which is configured for absorbing a second amount of heat from the battery cell (5) and the first cooling device in an electrical charging process, the second cooling device (9) being able to be filled with and flowed through by a coolant (13). Furthermore, the invention relates to a method for cooling a battery cell of an electrically powered aircraft.

Abstract: A battery cooling device for cooling at least one battery cell (1) of an electrically driven aircraft is provided, with a latent heat store (3). The battery cell is surrounded by a multilayer system having at least two layers (2,4) of fire protection material and a layer of the phase change material of the latent heat store, where an inner layer of the multilayer system, facing the battery cell, and an outer layer of the multilayer system, facing the surroundings, are formed of the fire protection material, and a middle layer, which is disposed between the inner and the outer layers, is formed of the phase change material of the latent heat store, and the fire protection material is of at least two-layer form, where a first layer of the fire protection material is mechanically stable in form and a second layer of the fire protection material comprises hydrated material.