<p>A battery cooling system comprises: a battery cell 914) for generating electrical energy; an air-tight housing (10) to incorporate the cell in its inner space (24), this being filled with coolant; and a cooling device 927) which is in communication with this inner chamber and is filled with coolant. The coolant absorbs heat developed by the cell in the inner chamber of the housing in order to evaporate. The evaporated coolant moves in the cooling device and is cooled by it in order to condense. The coolant evaporated by the heat moves upwards to touch the cooling device and the condensed coolant moves downwards around the battery cell by gravity.</p>
