NOVELTY - The battery pack comprises battery cells including a main body configured to generate an electrical current from an electrochemical reaction, a battery tray including a channel configured to receive a portion of the battery cells, cooling elements disposed between adjacent battery cells, and an urging mechanism for applying a compressive load to the battery cells in a first axial direction parallel to the longitudinal axis of the battery tray. The channel and the urging mechanism permit an axial translation of the battery cells in respect of a longitudinal axis of the battery tray.    USE - Used as a battery pack, where the battery is useful as a clean, efficient and environmentally responsible power source for electric vehicles and is a rechargeable lithium ion battery.    ADVANTAGE - The battery pack prevents undesirable overheating conditions, and can be economically manufactured with good structural integrity.    DETAILED DESCRIPTION - The battery pack comprises battery cells including a main body configured to generate an electrical current from an electrochemical reaction, a battery tray including a channel configured to receive a portion of the battery cells, cooling elements disposed between adjacent battery cells, and an urging mechanism for applying a compressive load to the battery cells in a first axial direction parallel to the longitudinal axis of the battery tray. The channel and the urging mechanism permit an axial translation of the battery cells in respect of a longitudinal axis of the battery tray. The channel has a U-shaped cross-section. The battery tray has a unitary structure to provide structural integrity to the battery pack. Each of the cooling elements is in fluid communication with a supply fluid manifold and an exhaust fluid manifold through a flexible conduit. The compressive load applied to the battery cells is 900N. The urging mechanism includes a spring. The main body has a pair of electrical outwardly extending tabs. The cooling elements include a cooling passage that is in heat exchange relationship with the main body of the battery cell and is configured to transfer head generated during the electrochemical reaction away from the main body. The battery tray includes first walls extending upwardly from a bottom wall, where inner surfaces of the walls form the channel. An INDEPENDENT CLAIM is included for a method for manufacturing a battery pack.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic exploded perspective view of a battery pack.    Compliant or deformable spacer (10)    Cover (92)    Outwardly extending flanges (94, 96)    Apertures (98)    Outer edge. (102)