Electrochemical cell modules and methods of producing the same

An electrochemical cell module, comprising:

• a first electrochemical cell, the first electrochemical cell comprising:
• an anode material layer disposed on an anode current collector;
• a cathode material layer disposed on a cathode current collector;
• and
• a separator disposed between the anode material layer and the cathode material layer, the separator having sufficient size such that a portion of the separator extends beyond an outer edge of the anode material layer and an outer edge of the cathode material layer, the separator having a top surface and a bottom surface;
• a pouch material encasing the first electrochemical cell, the pouch material having a greater width than a width of the separator and a greater length than a length of the separator such that a portion of the pouch material extends beyond outer bounds of the separator, the portion of the pouch material having a top surface and a bottom surface;
• a second electrochemical cell;
• a module case enclosing the first electrochemical cell and the second electrochemical cell, the module case including an inner wall;
• and
• a heat sink disposed between the first electrochemical cell and the second electrochemical cell, the heat sink thermally coupled to the first electrochemical cell, the second electrochemical cell, and the module case and configured to transfer heat therebetween, the heat sink including a heating element configured to generate heat and transfer the generated heat to at least one of the first and second electrochemical cells or the module case to modify a temperature in the electrochemical cell module,
• wherein at least one of the top surface or the bottom surface of the portion of the pouch material contacts the inner wall of the module case.

An electrochemical cell module, comprising:

• a plurality of electrochemical cells arranged in a stack, each of the plurality of electrochemical cells each including:
• an anode material layer disposed on an anode current collector;
• a cathode material layer disposed on a cathode current collector;
• and
• a separator disposed between the anode material layer and the cathode material layer, the separator having sufficient size such that a portion of the separator extends beyond an outer edge of the anode material layer and an outer edge of the cathode material layer;
• a heat sink disposed between a first electrochemical cell of the plurality of electrochemical cells and a second electrochemical cell of the plurality of electrochemical cells, the heat sink thermally coupled to the first electrochemical cell and the second electrochemical cell and configured to transfer heat therebetween, the heat sink including a heating element configured to generate heat and transfer the generated heat to at least one of the first electrochemical cell or the second electrochemical cell to modify a temperature in the electrochemical cell module;
• and
• a pouch material having a greater width than a width of the separator and a greater length than a length of the separator such that a portion of the pouch material extends beyond outer bounds of the separator,
• wherein the portion of each pouch material that extends beyond the outer bounds of the separator has a first side and a second side opposite the first side, the first side folded relative to a plane along which the anode material layer and the cathode material layer extend, the second side folded relative to the plane along which the anode material layer and the cathode material layer extend and at an angle of between about 160 degrees and about 200 degrees relative to the first side.