High-voltage battery, method for producing same and motor vehicle having a battery of this type

A high-voltage battery for a motor vehicle, said high-voltage battery comprising:

• a battery housing defining an interior space that is at least partially concealed by a cover, said cover having a cover wall including an interior facing surface, an exterior facing surface opposite the interior facing surface, a first aperture formed through the cover wall, and a second aperture formed through the cover wall that is spaced apart from the first aperture;
• a coolant connection of multipartite design, said coolant connection including a connection flange mounted to the cover wall, said connection flange comprising a body having (i) a first opening that registers and is aligned with the first aperture and (ii) a threaded sleeve that is positioned through the second aperture, said threaded sleeve including a flange that is positioned within the interior space to face the interior facing surface of the cover wall and an elongated portion that extends through the second aperture beyond the exterior facing surface to a location outside of the interior space, said coolant connection further including a securing ring that is positioned outside of the interior space and connected to the elongated portion for securing the connection flange to the cover wall;
• and
• a coolant line that is positioned within the interior space of the battery housing and connected to the first opening of the connection flange.