US 12,412,967 B2
System and method for filling a battery cell with liquid electrolyte
Raphael Jan J. Goossens, Rotselaar (BE); and Louca Raphael Goossens, Aarschot (BE)
Assigned to PROJECT ENGINEERING AND CONTRACTING NV, Leuven (BE)
Filed by Project Engineering and Contracting NV, Leuven (BE)
Filed on Mar. 31, 2023, as Appl. No. 18/193,925.
Prior Publication US 2024/0332763 A1, Oct. 3, 2024
Int. Cl. H01M 10/04 (2006.01); H01M 10/48 (2006.01); H01M 50/627 (2021.01); H01M 50/673 (2021.01)
CPC H01M 50/627 (2021.01) [H01M 10/0404 (2013.01); H01M 10/484 (2013.01); H01M 50/673 (2021.01)] 14 Claims
OG exemplary drawing
 
1. A filling head assembly for filling a battery cell with a liquid electrolyte, the filling head assembly comprising a filling head;
wherein the filling head comprises a first and a second fluid channel and a valve;
wherein each of both fluid channels comprises an inlet and an outlet;
wherein the inlet of the first fluid channel is adapted to be connected to a pump;
wherein the inlet of the second fluid channel is adapted to be connected to a vacuum pump;
wherein the outlet of the first fluid channel is adapted to engage with a filling opening of the battery cell;
wherein the outlet of the second fluid channel is on a same side of the filling head as the outlet of the first fluid channel;
wherein the valve is positioned such that the first fluid channel is blocked when the valve is in a first position and such that the first fluid channel is open when the valve is in a second position;
the filling head assembly further comprising a casing;
wherein the filling head is movably mounted in the casing;
wherein the casing comprises one or more openings to allow fluid access to the fluid channels of the filling head;
wherein an end face of the casing, the casing end face comprising one of the openings, is adapted to engage with an end face of the battery cell, the battery cell end face comprising the filling opening;
wherein the outlet of the first fluid channel is distanced from the filling opening when the filling head is in a first position in the casing and the outlet of the first fluid channel extends through the opening in the casing end face and into the filling opening when the filling head is in a second position in the casing.