Thermal battery with encapsulated phase-change material

Abstract

The present invention relates to a thermal battery ( 1 ) comprising an enclosure comprising a fluid inlet and outlet and comprising within it an encapsulated phase-change material in the form of at least one tube ( 3 ), at least one tube ( 3 ) being wound in a spiral within the enclosure.

1 . A thermal battery comprising:
 an enclosure comprising a fluid inlet and outlet and comprising within it an encapsulated phase-change material in the form of at least one tube,   wherein at least one tube is wound in a spiral within the enclosure.   
     
     
         2 . The thermal battery as claimed in  claim 1 , wherein the spiral winding of the tube is performed about an axis of winding parallel to the circulating flow of the fluid within said thermal battery. 
     
     
         3 . The thermal battery as claimed in  claim 2 , wherein the spiral winding of the tube comprises an empty central part along the axis of winding. 
     
     
         4 . The thermal battery as claimed in  claim 3 , further comprising longitudinal tubes of encapsulated phase-change material, said longitudinal tubes being positioned in the central part of the spiral winding of the tube. 
     
     
         5 . The thermal battery as claimed in  claim 1 , further comprising spacers between the tubes so as to create a space for the circulation of the fluid. 
     
     
         6 . The thermal battery as claimed in  claim 1 , wherein the spiral winding of the tube is performed using a single tube. 
     
     
         7 . The thermal battery as claimed in  claim 1 , wherein the walls of the tube are made of plastic.