Patent ID: 11897241
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B

Claim 9:
10. A lamination system with a modular design for fabricating a lithium metal anode to have a width at least three times as wide as a width of an incoming lithium foil, the lithium foil to be included as an integral part of the lithium metal anode, the system comprising:
a collector spool having a collector flow of a collector material;
a first lamination spool having a first lamination flow of the lithium foil;
a first lamination roller positioned downstream of the collector spool, the first lamination roller configured to produce a first laminate by laminating the first lamination flow to the collector material;
a second lamination spool having a second lamination flow of the lithium foil;
a second lamination roller positioned downstream of the first lamination roller, the second lamination roller configured to produce a second laminate by laminating the second lamination flow to the collector material;
a third lamination spool having a third lamination flow of the lithium foil;
a third lamination roller positioned downstream of the second lamination roller, the third lamination roller configured to produce a third laminate by laminating the third lamination flow to the collector material; and
a controller having a plurality of non-transitory instructions stored on a computer-readable storage medium and executable with a processor for:
controlling the third lamination roller to apply a third pressure;
controlling the second lamination roller to apply a second pressure, the second pressure being less than the third pressure;
controlling the first lamination roller to apply a first pressure, the first pressure being less than the second pressure; and
determining the first, second, and third pressures as a function of a thickness desired for the third laminate, including setting of the third pressure to a value sufficient to spread the third laminate to the thickness and setting the first and second pressures to values insufficient to spread an entirety of either one of the first and second laminates to the thickness.