US 12,438,228 B2
Battery cell, battery pack, and vehicle including same
Kwang-Hun Ko, Daejeon (KR); Su-Ji Choi, Daejeon (KR); Do-Gyun Kim, Daejeon (KR); Da-Som Lee, Daejeon (KR); and Kwang-Su Hwangbo, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/872,040
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Nov. 22, 2023, PCT No. PCT/KR2023/018929
§ 371(c)(1), (2) Date Dec. 5, 2024,
PCT Pub. No. WO2024/112110, PCT Pub. Date May 30, 2024.
Claims priority of application No. 10-2022-0157708 (KR), filed on Nov. 22, 2022.
Prior Publication US 2025/0167381 A1, May 22, 2025
Int. Cl. H01M 50/342 (2021.01); H01M 50/152 (2021.01)
CPC H01M 50/3425 (2021.01) [H01M 50/152 (2021.01); H01M 2200/20 (2013.01); H01M 2220/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A battery cell comprising:
an electrode assembly comprising a first electrode, a second electrode, and a separator interposed therebetween;
a battery housing configured to receive the electrode assembly through an opening formed on one side thereof; and
a housing cover configured to cover the opening and having a venting portion configured to break when internal pressure of the battery housing increases to a predetermined level or more,
wherein the venting portion comprises an upper notched portion provided on an upper surface of the housing cover and a lower notched portion provided on a lower surface of the housing cover,
wherein the upper notched portion and the lower notched portion are provided in a staggered state, and
wherein a width W1 of an entrance of the upper notched portion, a width W2 of an entrance of the lower notched portion, and a distance D2 between a center line of the upper notched portion and a center line of the lower notched portion satisfy the following Equation 1

OG Complex Work Unit Math