Containment heatsink for packaged battery cells

An apparatus for cooling and containing packaged battery cells, the apparatus comprising:

• a first structure disposed on a printed circuit board, the first structure and the printed circuit board encase a first battery cell, the first battery cell being electrically coupled to the printed circuit board, the first structure including an external surface and an internal surface defining a first compartment in which the first battery cell is located;
• the first compartment located on a bottom surface of the first structure, wherein the bottom surface of the first structure is coupled to a top surface of the printed circuit board;
• a first seal surrounding an area of the first battery cell between the top surface of the printed circuit board coupled to the bottom surface of the first structure;
• a first thermal interface material located in the first compartment, wherein a first portion of the first thermal interface material is thermally coupled to an interior surface of the first compartment and a second portion of the first thermal interface material is thermally coupled to at least a portion of the first battery cell located in the first compartment;
• one or more apertures on the printed circuit board, wherein the one or more apertures are located within an area of the first compartment configured to provide pressure relief for the first compartment in which the first battery cell is located;
• a first blast plate structure coupled to the bottom surface of the first structure, wherein the bottom surface of the first structure includes one or more protruding members extending through the printed circuit board, for coupling the first blast plate structure, wherein a first void separates a bottom surface of the printed circuit board and a top surface of the first blast plate structure;
• and
• a plurality of heatsink fins located on the external surface of the first structure.