NOVELTY - The heat control pouch (10) has high thermal conductivity case (11) which includes sealed internal space. An elasticity sheet (14) is attached to upper and lower surfaces of high thermal conductivity case. The elasticity sheet is formed of thermoplastic elastomer composite containing high thermal conductivity filler. The high thermal conductivity case is provided with radiant heat fins (13) formed from edges of high thermal conductivity case. Each of radiant heat fins is protruded in one direction toward air channel formed between modules of battery cell (20).    USE - Heat control pouch for battery cell module (claimed). Uses include but are not limited to sports utility vehicle (SUV), bus, truck, commercial vehicle, boat, ship, aircraft, hybrid vehicle, electric vehicle, plug-in hybrid electric vehicle, hydrogen-powered vehicle, fuel vehicle, gasoline-powered vehicle and electric-powered vehicle.    ADVANTAGE - The heat control pouch can maintain optimum temperature of the battery under various operational and temperature conditions and absorbs volumetric variations of the battery cell in efficient manner. The heat control pouch can appropriately maintain the internal temperature of battery cell module by absorbing heat when the temperature of battery cell rises, discharging heat when the temperature of the battery cell falls and absorbing volumetric variations during charging and discharging of the battery cell. Thus, the performance reduction of the battery can be prevented. Hence the battery cell module having the heat control pouch can improve heat control performance and provide compact heat radiation system with improved energy density versus volume while securing the lifespan and stability of the battery in efficient manner.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a battery cell module.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the battery cell module.    Heat control pouch (10)    High thermal conductivity case (11)    Radiant heat fin (13)    Elasticity sheet (14)    Battery cell (20)