NOVELTY - The temperature regulation and management system (10) comprises an inner wall (16) and an outer wall (14) forming a space for accommodating a phase change material (PCM) (18). The inner wall is present in contact with an object that requires temperature regulation within a specified operating range, and is formed from sheet molding compound (SMC). The PCM is suspended in an open cell foam or in a closed cell foam. A thickness of the PCM is varied between inner and outer wall. The SMC has air entrainment. A thickness of inner and outer walls is independent of each other.    USE - The temperature regulation and management system is useful for maintaining operating temperature of energy cells or batteries (claimed) that are useful in electric and hybrid vehicles.    ADVANTAGE - The economical temperature regulation and management system maintains and stabilizes the operating temperature of the battery thus improving output efficiency, long lifespan and performance.    DETAILED DESCRIPTION - The temperature regulation and management system (10) comprises an inner wall (16) and an outer wall (14) forming a space for accommodating a phase change material (PCM) (18). The inner wall is present in contact with an object that requires temperature regulation within a specified operating range, and is formed from sheet molding compound (SMC). The PCM is suspended in an open cell foam or in a closed cell foam. A thickness of the PCM is varied between inner and outer wall. The SMC has air entrainment. A thickness of inner and outer walls is independent of each other. The object has faces in contact with inner wall. The inner wall and outer wall have fin projecting from the walls. The sheet molding compound is formed with glass-, thermoplastic- and/or metallic microspheroids.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic perspective view of a temperature regulation and management system with two energy cells.    Temperature regulation and management system (10)    Energy cells (12)    Outer wall (14)    Inner wall (16)    Phase changing material. (18)