Patent ID: 11942654
Assignee: 24M TECHNOLOGIES, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 8:
9. A method of forming a degassed electrochemical cell stack, comprising:
stacking a plurality of electrochemical cells on top of a bottom pouch, each of the plurality of electrochemical cells including an anode disposed on an anode current collector, a cathode disposed on a cathode current collector, a selectively permeable membrane disposed between the anode and the cathode, an anode tab extending from the anode current collector, a cathode tab extending from the cathode current collector, an anode degassing port configured to release gas from the anode, and a cathode degassing port configured to release gas from the cathode;
electrically coupling an anode busbar to each anode tab;
electrically coupling a cathode busbar to each cathode tab;
joining a top pouch to the bottom pouch to form a cased electrochemical cell stack, the cased electrochemical cell stack including a first compartment housing the degassed electrochemical cell stack, a second compartment fluidically coupled to each of the anode degassing ports, and a third compartment fluidically coupled to each of the cathode degassing ports, the anode busbar and the cathode busbar each protruding from the first compartment;
applying a vacuum to the cased electrochemical cell stack, such that a first gas transfers from the anodes to the second compartment and a second gas transfers from the cathodes to the third compartment;
sealing an area between each electrochemical cell and the second compartment and an area between each electrochemical cell and the third compartment; and
removing the second compartment and the third compartment from the cased electrochemical cell stack to form a degassed electrochemical cell stack.