US 12,424,714 B2
Electrolyte injection device and electrolyte injection method using the same
Won Nyeon Kim, Daejeon (KR); Soon Kwan Kwon, Daejeon (KR); Byeong Kyu Lee, Daejeon (KR); and Su Taek Jung, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/778,608
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Nov. 11, 2020, PCT No. PCT/KR2020/015735
§ 371(c)(1), (2) Date May 20, 2022,
PCT Pub. No. WO2021/107460, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 10-2019-0152102 (KR), filed on Nov. 25, 2019.
Prior Publication US 2022/0407198 A1, Dec. 22, 2022
Int. Cl. H01M 50/609 (2021.01); H01M 50/105 (2021.01)
CPC H01M 50/609 (2021.01) [H01M 50/105 (2021.01)] 10 Claims
OG exemplary drawing
 
1. An electrolyte injection device comprising:
a base portion configured to receive a preliminary battery cell disposed on an upper surface thereof;
a movable pressing jig movably coupled to the base portion, the movable pressing jig including a plurality of unit movable pressing jigs, each of the plurality of unit movable pressing jigs being spaced apart from adjacent ones of the unit movable pressing jigs in a first lateral direction parallel to upper and lower major surfaces the preliminary battery cell; and
an electrolyte injection pipe configured to inject an electrolyte into the preliminary battery cell toward a portion of an outer periphery of the electrode assembly against which the movable pressing jig is not pressing, the portion located in a space between the adjacent ones of the movable pressing jigs in the first lateral direction,
wherein the movable pressing jig comprises portions configured to press the preliminary battery cell in directions perpendicular to first and second opposite planar surfaces of an electrode assembly receiving portion of the preliminary battery cell.