NOVELTY - The device for cooling an energy storage such as galvanic cell containing lithium, comprises a coolant (109) by which the housing (101) or part of the energy storage flows or flows through and which produces an extinguishing effect during appearing fire, and a device for the stabilization of the coolant pressure during emerging the coolant from a coolant circuit (104) in the fire case. The coolant flows through the coolant circuit connected in normal operation of the energy storage. The coolant circuit is connected so that the coolant is discharged in the fire case at certain places.    USE - Device for cooling an energy storage such as galvanic cell containing lithium useful for motor vehicles.    ADVANTAGE - The device ensures simple and efficient cooling of an energy storage with high performance.    DETAILED DESCRIPTION - The device for cooling an energy storage such as galvanic cell containing lithium, comprises a coolant (109) by which the housing (101) or part of the energy storage flows or flows through and which produces an extinguishing effect during appearing fire, and a device for the stabilization of the coolant pressure during emerging the coolant from a coolant circuit (104) in the fire case. The coolant flows through the coolant circuit connected in normal operation of the energy storage. The coolant circuit is connected so that the coolant is discharged in the fire case at certain places from the closed coolant circuit and produces the extinguishing effect at the places. The coolant is a gel or viscoelastic fluid or colloidal viscoelastic fluid. The coolant consists of a mixture of 43 wt.% of water, 28 wt.% of polymer, 6 wt.% of surfactant and/or 23 wt.% of ester oil. The dynamic viscosity of the coolant is 100-1000 mPas. The coolant is mixed with an additive during withdrawing from the cooling circuit to form a gel or viscoelastic fluid. The additive consists of a mixture of 50 wt.% of polymer, 10 wt.% of surfactant and 40 wt.% of ester oil.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic representation of a device for cooling an energy storage.    Housing (101)    Coolant circuit (104)    Electrodes (105, 106)    Deflector (107)    Coolant. (109)