{
  "$type": "site.standard.document",
  "description": "A drive unit includes an electric motor for propulsion and a cooling system. The electric motor includes a stator assembly and a rotor assembly, the stator assembly including a housing, a core with grooves, and a winding assembly. The winding assembly extends through the grooves. The housing…",
  "path": "/patents/1355574",
  "publishedAt": "2023-11-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02K9/193",
    "Dr. Ing. h.c. F. Porsche Aktiengesellschaft"
  ],
  "textContent": "A drive unit includes an electric motor for propulsion and a cooling system. The electric motor includes a stator assembly and a rotor assembly, the stator assembly including a housing, a core with grooves, and a winding assembly. The winding assembly extends through the grooves. The housing includes a housing inlet and outlet. The cooling system includes a first cooling circuit to enable a direct cooling of the winding assembly. The first cooling circuit includes an expansion tank assembly, including a tank, a tank inlet and outlet, and a volume change assembly. The volume change assembly enables change of the total volume of the first cooling circuit as a function of pressure in the first cooling circuit such that, as the pressure in the first cooling circuit increases, a first volume is increased and, as the pressure in the first cooling circuit decreases, the first volume is reduced.",
  "title": "DRIVE UNIT"
}