US 11,870,082 B2
Method for manufacturing secondary battery
Dong Hun Bae, Daejeon (KR); Hyo Jin Park, Daejeon (KR); Suk Hyun Hong, Daejeon (KR); Joon Sung Bae, Daejeon (KR); Beom Koon Lee, Daejeon (KR); Dae Bong Lim, Daejeon (KR); and Jin Woo Heo, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Nov. 21, 2022, as Appl. No. 17/991,192.
Application 17/991,192 is a division of application No. 16/764,625, granted, now 11,539,068, previously published as PCT/KR2018/015578, filed on Dec. 7, 2018.
Claims priority of application No. 10-2017-0173120 (KR), filed on Dec. 15, 2017; application No. 10-2017-0173121 (KR), filed on Dec. 15, 2017; and application No. 10-2018-0147728 (KR), filed on Nov. 26, 2018.
Prior Publication US 2023/0077553 A1, Mar. 16, 2023
Int. Cl. H01M 50/105 (2021.01); H01M 50/325 (2021.01); H01M 10/04 (2006.01)
CPC H01M 50/105 (2021.01) [H01M 10/04 (2013.01); H01M 10/0404 (2013.01); H01M 10/049 (2013.01); H01M 50/325 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A method for manufacturing a secondary battery, the method comprising:
a formation step of accommodating an electrode assembly and an electrolyte into a body of a battery case,
wherein the body of the battery case comprises an accommodation part and a gas pocket part,
wherein a passage is formed in the body of the battery case that extends from the accommodation part through the gas pocket part to an outside, and
wherein the passage is capable of discharging an internal gas from the accommodation part;
a seating step of seating the body of the battery case on a support block, which has an inclined part on a side surface and the inclined part supports the body of the battery case,
wherein the gas pocket part is bent and seated on a top surface of the support block; and
a gas discharge step of pressing the body of the battery case to discharge a gas accommodated in the accommodation part into the passage and through the gas pocket part to the outside.
 
8. A method for manufacturing a secondary battery, the method comprising:
a formation step of accommodating an electrode assembly and an electrolyte into a body of a battery case,
wherein the body of the battery comprises an accommodation part and a gas pocket part,
wherein a passage in the body of the battery case extends from the accommodation part through the gas pocket part to an outside,
wherein the passage is capable of discharging an internal gas from the accommodation part;
a seating step of seating the gas pocket part on a support block, which has an inclined part on a side surface thereof, to support the gas pocket part in the battery case; and
a gas discharge step of pressing the body to discharge a gas accommodated in the accommodation part through the gas pocket part in the battery case,
wherein, in the seating step, the gas pocket part is seated on the inclined part of the support block.