US 12,469,910 B2
Electrochemical cell casing having an annular sidewall secured to a base plate by a ceramic-to-glass-to-metal seal
David Dianetti, Lancaster, NY (US); Lasantha Viyannalage, Pittsford, NY (US); Ho chul Yun, East Amherst, NY (US); Robert S. Rubino, Williamsville, NY (US); Marcus J. Palazzo, Wheatfield, NY (US); and Jared Arellano, Akron, NY (US)
Assigned to Greatbatch Ltd., Clarence, NY (US)
Filed by Greatbatch Ltd., Clarence, NY (US)
Filed on Sep. 23, 2021, as Appl. No. 17/483,241.
Claims priority of provisional application 63/116,219, filed on Nov. 20, 2020.
Prior Publication US 2022/0166095 A1, May 26, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 50/00 (2021.01); H01M 50/109 (2021.01); H01M 50/171 (2021.01); H01M 50/186 (2021.01); H01M 50/191 (2021.01); H01M 50/636 (2021.01)
CPC H01M 50/171 (2021.01) [H01M 50/109 (2021.01); H01M 50/186 (2021.01); H01M 50/191 (2021.01); H01M 50/636 (2021.01)] 21 Claims
OG exemplary drawing
 
1. An electrochemical cell, comprising:
a) a casing, comprising:
i) a metallic annular sidewall extending to an upper annular edge defining an upper open end spaced from a lower annular edge defining a lower open end, the metallic annular sidewall having an outer surface spaced from an inner surface;
ii) a metallic lid closing the upper annular edge of the annular sidewall, wherein the metallic lid has a hermetically sealed electrolyte fill port, and the electrolyte fill port extends through a lid thickness from a lid upper surface to a spaced apart lid lower surface;
iii) a metallic base plate;
iv) a dielectric material coating the lower annular edge and at least a portion of the inner surface of the metallic annular sidewall; and
v) a ring-shaped sealing glass in a glass-to-metal seal relationship with the metallic base plate and in a glass-to-ceramic seal relationship with the dielectric material coating the lower annular edge of the metallic annular sidewall so that the sealing glass electrically isolates the metallic base plate from the metallic sidewall closed by the metallic lid; and
b) an electrode assembly housed inside the casing, the electrode assembly comprising:
i) an anode active material;
ii) cathode active material; and
iii) a separator segregating the anode active material from directed physical contact with the cathode active material,
iv) wherein one of the anode and the cathode active materials is in electrical continuity with the metallic lid serving as one terminal for the cell, and the other of the anode and the cathode active materials is in electrical continuity with the metallic base plate serving as the other terminal for the cell; and
c) an electrolyte filled in the casing to activate the electrode assembly.