Battery module endplate with sealed hole for cooling tube connection

An endplate arrangement for a battery module configured for insertion into a battery module compartment of an energy storage system, comprising:

• an endplate configured to secure the battery module inside the energy storage system;
• a cooling tube including a cooling tube inlet and a cooling tube outlet that extend outside the battery module via first and second holes, respectively, in the endplate, the cooling tube configured to receive liquid coolant via a first cooling interface of a cooling manifold coupled to the cooling tube inlet and to output the liquid coolant via a second cooling interface of the cooling manifold coupled to the cooling tube outlet;
• and
• a first sealing component arranged inside a given hole among the first and second holes, the first sealing component defining a first sealing area between the first sealing component and the cooling tube in the given hole and a second sealing area between the first sealing component and the endplate in the given hole.