US 11,936,053 B2
Feedthroughs for thin battery cells
Brian K. Shiu, Sunnyvale, CA (US); Christopher R. Pasma, Redwood City, CA (US); Andrew Meyers, Berkeley, CA (US); and Haran Balaram, Sunnyvale, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jul. 18, 2022, as Appl. No. 17/866,736.
Application 17/866,736 is a division of application No. 16/354,382, filed on Mar. 15, 2019, granted, now 11,417,926.
Claims priority of provisional application 62/772,790, filed on Nov. 29, 2018.
Prior Publication US 2022/0352582 A1, Nov. 3, 2022
Int. Cl. H01M 10/10 (2006.01); H01M 50/105 (2021.01); H01M 50/536 (2021.01); H01M 50/553 (2021.01); H01M 50/562 (2021.01); H01M 50/593 (2021.01)
CPC H01M 50/105 (2021.01) [H01M 50/536 (2021.01); H01M 50/553 (2021.01); H01M 50/562 (2021.01); H01M 50/593 (2021.01)] 8 Claims
OG exemplary drawing
 
1. A method for manufacturing a battery cell, the method comprising:
placing a pin within an annular channel, the annular channel comprising an outer ring and an inner sidewall;
forming an insulator between the pin and inner sidewall of the annular channel using glass, wherein the pin extends through the insulator;
sliding the annular channel within an opening disposed on a terraced portion of an enclosure, the terraced portion having a reduced thickness with respect to a thickness of another portion of the enclosure, the enclosure configured to enclose a set of layers, the set of layers comprising a cathode layer, an anode layer, and a separator layer disposed between the cathode layer and the anode layer;
welding the outer ring of the annular channel to the enclosure along a periphery of the opening to create a hermetic seal;
welding a cathode tab extending from the cathode layer to the pin;
welding an anode tab extending from the anode layer to the enclosure;
hermetically sealing the set of layers within the enclosure; and
filling the enclosure with electrolyte.