Polymer-based battery pack enclosure assemblies with integrated thermal management features

A battery pack, comprising:

• an enclosure assembly including a polymer-based component that establishes at least a portion of an outermost surface of the battery pack;
• and
• a channel or tubing integrated into a floor of the polymer-based component,
• wherein the floor establishes an interior component contacting surface of the polymer-based component,
• wherein the channel or tubing is configured to establish a cooling circuit for thermally managing a battery internal component housed within the polymer-based component;
• wherein the channel is a molded-in channel formed in the floor of the polymer-based component, and comprising a heat exchanger plate received over the molded-in channel to establish a serpentine passage of the cooling circuit between the channel and the heat exchanger plate;
• and
• wherein the heat exchanger plate is secured to the polymer-based component by an overmolding.