US 11,670,818 B2
Serviceable battery pack assembly
Andrew W. White, Shelby Township, MI (US); Terry A. Swartzell, Ann Arbor, MI (US); James A. Rochon, Shelby Township, MI (US); Terry J. Short, Waterford, MI (US); and Charles E. Jensen, Shelby Township, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Dec. 10, 2019, as Appl. No. 16/709,031.
Prior Publication US 2021/0175480 A1, Jun. 10, 2021
Int. Cl. H01M 50/209 (2021.01); H01M 50/10 (2021.01)
CPC H01M 50/209 (2021.01) [H01M 50/10 (2021.01)] 18 Claims
OG exemplary drawing
 
1. An attachment system for a serviceable battery pack, comprising:
a battery pack comprising a first enclosure wall having a respective inner side, a respective outer side and defining a respective opening therethrough;
a stanchion comprising an interior portion inside the battery pack and a first exterior portion extending from the interior portion through the first enclosure wall opening to outside the battery pack, the interior portion including a first flange larger than the first enclosure wall opening, the stanchion including a first set of threads on the first exterior portion;
a first gasket trapped between the first flange and the inner side of the first enclosure wall;
a first nut engaging the first set of threads and configured to compress the first enclosure wall between the first nut and the first flange;
a battery pack attachment structure comprising a first surface facing the outer side of the first enclosure wall and defining a respective opening therethrough, the first enclosure wall opening and the battery pack attachment structure opening being substantially concentric;
a threaded attachment fastener configured to draw the stanchion and the battery pack attachment structure together; and
a first seal disposed between the first enclosure wall and the battery pack attachment structure.