THE PRESENT INVENTION RELATES TO A HEAT EXCHANGER, PARTICULARLY, TO A BATTERY COOLER FOR COOLING BATTERIES IN ELECTRIC VEHICLE

A heat exchanger (100) includes a tank assembly (10) and a tube (20). The tank assembly (10) is formed by joining a pair of panels (10a) and (10b). The tube (20) includes a plurality of channels (22). The tube (20) is received and joined to the tank assembly (10). At least one of the extreme end portions of the tube (20) is having at least one of the lateral walls (20a) comparatively thicker than the longitudinal walls (20b) and channel walls (22a) of the tube (20).