Battery pack thermal management system

A thermal management system for use with an energy storage system in an electric vehicle, the energy storage system having a plurality of cells arranged into a plurality of sheets, wherein the sheets are housed inside an ESS enclosure, said thermal management system including:

• a coolant thermally controlled by an HVAC system;
• a temperature monitoring device attached to a predetermined cell in each sheet;
• a battery monitor board connected to said temperature monitoring device;
• a manifold secured to an exterior surface of the ESS enclosure;
• a cooling tube arranged within each sheet, said cooling tube connected to said manifold;
• a tube seal plug arranged over both ends of said cooling tube;
• and
• an end fitting arranged on each end of said cooling tube.

A method of controlling the temperature of a battery pack in an electric vehicle, said method including the steps of:

• installing a predetermined number of thermistors on a predetermined number of cells of the battery pack;
• installing a cooling tube in the battery pack to provide for a thermal connection between said cells and said cooling tube;
• and
• moving a coolant through said cooling tube in a counter flow architecture to provide a uniform cooling over the entire battery pack.