US 12,264,397 B2
Assembly comprising a SOEC/SOFC-type solid oxide stack and a high-temperature sealed coupling system
Michel Planque, Grenoble (FR); and Thibault Monnet, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Appl. No. 17/761,170
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
PCT Filed Sep. 14, 2020, PCT No. PCT/FR2020/051584
§ 371(c)(1), (2) Date Mar. 16, 2022,
PCT Pub. No. WO2021/053288, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 1910287 (FR), filed on Sep. 18, 2019.
Prior Publication US 2023/0349052 A1, Nov. 2, 2023
Int. Cl. H01M 8/12 (2016.01); C25B 1/042 (2021.01); C25B 9/17 (2021.01); C25B 9/63 (2021.01); C25B 9/70 (2021.01); C25B 11/077 (2021.01); H01M 4/90 (2006.01); H01M 8/0273 (2016.01); H01M 8/0656 (2016.01)
CPC C25B 1/042 (2021.01) [C25B 9/17 (2021.01); C25B 9/63 (2021.01); C25B 9/70 (2021.01); C25B 11/077 (2021.01); H01M 4/9025 (2013.01); H01M 8/0273 (2013.01); H01M 8/0656 (2013.01); H01M 8/12 (2013.01); H01M 2008/1293 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An assembly, comprising:
a solid-oxide pack of SOEC/SOFC type operating at high temperature, comprising:
a plurality of electrochemical cells each formed by a cathode, an anode and an electrolyte interposed between the cathode and the anode, and a plurality of intermediate interconnectors each arranged between two adjacent electrochemical cells,
a system for clamping the solid-oxide pack of the SOEC/SOFC type, including a top clamping plate and a bottom clamping plate, between which the solid-oxide pack of the SOEC/SOFC type is clamped, each clamping plate including at least two clamping orifices, the clamping system furthermore including:
at least two clamping rods configured each to extend through a clamping orifice in the top clamping plate and through a corresponding clamping orifice in the bottom clamping plate to allow assembly of the top and bottom clamping plates with each other, and
clamping means at each clamping orifice of the top and bottom clamping plates configured to cooperate with said at least two clamping rods to allow the assembly of the top and bottom clamping plates with each other,
at least one coupling system gastight at high temperature of the solid-oxide pack of the SOEC/SOFC type, mounted in at least one of the top or bottom clamping plates, including:
a clamping base, comprising a thread on its external surface at an end mounted in said at least one of the top or bottom clamping plates, the clamping base comprising a first through internal pipe to provide an inlet and/or outlet tube for gas to pass,
a support base, located in the first internal pipe of the clamping base, a second end of which is configured to be attached to said inlet and/or outlet tube for gas, the support base comprising a second internal through pipe to allow passage of gas coming from said tube and/or from the solid-oxide pack of the SOEC/SOFC type, and
a seal, having a C shape, positioned against a first end, opposite to the second end, of the support base,
wherein said at least one of the top or bottom clamping plates includes at least one through passage pipe for gas, configured to be in fluid communication with the solid-oxide pack of the SOEC/SOFC type and said inlet and/or outlet tube for gas, said at least one passage pipe comprising:
a surface for supporting the seal so that the seal is positioned between the support surface and the first end of the support base, and
a threaded countersink for receiving the thread of the clamping base, and
wherein the seal is formed by a flexible metal joint in a C shape, comprising a core consisting of a metal helical spring and a first metal envelope in which the metal helical spring is embedded.