Extruded battery case

{
  "publication_number": "US10476045B2",
  "country": "US",
  "kind": "B2",
  "title": "Extruded battery case",
  "abstract": "An exemplary battery cell assembly includes, among other things, an extruded case that provides an open area, and an electrode of a battery pack of an electrified vehicle. The electrode is held within the open area. An exemplary electrode housing method includes, among other things, positioning an electrode of an electrified vehicle battery pack within an open area of an extruded case.",
  "claims": [
    "1. A battery assembly, comprising: a first extruded case that provides an open area, the first extruded case including an alignment feature; and an electrode of a battery pack of an electrified vehicle, the electrode held within the open area, wherein the first extruded case is configured to be disposed with a second extruded case along an axis of the battery pack, wherein the alignment feature extends from a surface of the first extruded case that is transverse to the axis, wherein the alignment feature is configured to contact the second extruded case to provide a gap between the first extruded case and the second extruded case, the gap having a perimeter at least partially provided by the first extruded case and at least partially provided by the second extruded case.",
    "2. The assembly of claim 1, wherein the alignment feature is a first alignment feature that is configured to directly contact a second alignment feature of the second extruded case.",
    "3. A battery pack assembly, comprising: a battery cell of a battery pack of an electrified vehicle, the battery cell including an extruded case and an electrode, wherein the extruded case provides an open area that holds the electrode, an alignment feature of the extruded case, the alignment feature configured to interconnect with a distinct portion of the battery pack to limit movement of the extruded case relative to the distinct portion; and an endplate that compresses the battery cell and other battery cells along an axis, wherein the distinct portion of the battery pack is an alignment feature of the endplate.",
    "4. The assembly of claim 1, wherein the alignment feature extends from an outer surface of the first extruded case that faces away from the open area, the alignment feature having an alignment surface that is transverse to the outer surface and interfaces with the second extruded case.",
    "5. The assembly of claim 1, wherein the alignment feature is first alignment feature on a first axial side of the first extruded case and the first extruded case further comprises a second alignment feature on a second axial side of the first extruded case, the first alignment feature asymmetrical with the second alignment feature.",
    "6. The assembly of claim 1, wherein the gap provides a conduit configured to carry a temperature management fluid within the battery pack.",
    "7. The assembly of claim 6, wherein the alignment feature has a conduit surface that is transverse to the outer surface and is configured to directly contact the temperature management fluid within the gap, wherein an alignment feature of the second extruded case has a conduit surface that is also configured to directly contact the temperature management fluid within the gap.",
    "8. A battery pack assembly, comprising: a plurality of battery cells disposed along an axis, the battery cells each including a extruded case that provides an open area, and an electrode held within the open area; the extruded case comprising an extruded feature configured to directly engage a heat exchanger plate disposed adjacent the plurality of battery cells.",
    "9. The assembly of claim 1, wherein the electrode is folded and wound about an electrode axis, and the first extruded case is extruded in a direction aligned with the electrode axis.",
    "10. The assembly of claim 1, comprising a first header secured to a first end portion of the first extruded case, and a second header secured to an opposing, second end portion of the first extruded case, the first and second header, when secured, enclosing the electrode within the open area.",
    "11. The assembly of claim 1, wherein the first extruded case comprises an extruded electrode positioning feature extending into the open area and configured to align the electrode.",
    "12. The assembly of claim 1, wherein the alignment feature is a continuous and monolithic portion of the first extruded case.",
    "13. The assembly of claim 1, wherein the alignment feature is integrated together with other portions of the first extruded case.",
    "14. The assembly of claim 1, further comprising a temperature management fluid within the gap.",
    "15. The assembly of claim 10, wherein the first and second header, when secured completely enclose the electrode within the open area.",
    "16. The battery assembly of claim 1, wherein the first alignment feature is configured to contact the second extruded case without axially overlapping any portion of the second extruded case.",
    "17. The battery assembly of claim 1, wherein the alignment feature is a first alignment feature and the surface is a first surface, wherein the first extruded case includes a second alignment feature extending from a second surface, the second alignment feature and the second surface on an opposite axial side of the first extruded case from the first alignment feature and the first surface, wherein the second alignment feature is configured to interconnect to an endplate of the battery pack.",
    "18. The battery assembly of claim 17, wherein the first alignment feature is configured to contact the second extruded case without axially overlapping any portion of the second extruded case.",
    "19. The battery assembly of claim 17, where the second alignment feature is configured to axially overlap with a portion of the endplate when interconnected to the endplate.",
    "20. The battery pack assembly of claim 8, wherein the heat exchanger plate is disposed adjacent the plurality of battery cells without extending axially between any of the plurality of battery cells."
  ],
  "description_excerpt": "This disclosure relates generally to a battery assembly for an electrified vehicle battery pack and, more particularly, to an extruded battery case of the battery assembly.\n\nElectrified vehicles differ from conventional motor vehicles because electrified vehicles are selectively driven using one or more electric machines powered by a battery pack. The electric machines can drive the electrified vehicles instead of, or in addition to, an internal combustion engine. Example electrified vehicles include hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), fuel cell vehicles (FCVs), and battery electric vehicles (BEVs).\n\nBattery packs of electrified vehicles typically include a plurality of individual battery assemblies each having one or more electrodes. Terminals extend from the battery assemblies to electrically connect the electrodes to a bus bar, for example. Some battery packs include features separate from the battery assemblies that are used to align and retain the battery assemblies, move fluids, and maintain structural integrity over time.\n\nA battery assembly according to an exemplary embodiment of the present disclosure includes, among other things, an extruded case that provides an open area, and an electrode of a battery pack of an electrified vehicle. The electrode is held within the open area.\n\nIn another example having one or more features of the foregoing assembly, the extruded case includes an alignment feature configured to interface with a distinct portion of the battery pack to limit movement of the extruded case relative to the distinct portion.",
  "cpc": [
    "H01M 10/6556",
    "H01M 10/0431",
    "H01M 10/625",
    "H01M 10/6554",
    "H01M 2/024",
    "H01M 2/1077",
    "H01M 2220/20",
    "H01M 50/10",
    "H01M 50/103",
    "H01M 50/209",
    "H01M 50/505",
    "Y02E 60/10",
    "Y02P 70/50"
  ],
  "ipc": [
    "H01M 10/04",
    "H01M 10/625",
    "H01M 10/6554",
    "H01M 10/6556",
    "H01M 50/10",
    "H01M 50/103",
    "H01M 50/209"
  ],
  "assignees": [
    "Ford Global Technologies LLC"
  ],
  "inventors": [
    "Brian Joseph ROBERT",
    "Kent Snyder",
    "Renata Michaela Arsenault"
  ],
  "filing_date": "2016-02-22",
  "publication_date": "2019-11-12",
  "grant_date": "2019-11-12",
  "priority_date": "2016-02-22",
  "application_number": "US-201615049470-A",
  "family_id": "59522377",
  "cited_by_count": 2,
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}