US 11,897,207 B2
Sealing device for secondary battery
Ik Soo Chae, Daejeon (KR); and Chang Bum Ahn, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., (KR)
Appl. No. 16/971,522
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Jan. 21, 2019, PCT No. PCT/KR2019/000857
§ 371(c)(1), (2) Date Aug. 20, 2020,
PCT Pub. No. WO2019/177257, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 10-2018-0028578 (KR), filed on Mar. 12, 2018.
Prior Publication US 2020/0388800 A1, Dec. 10, 2020
Int. Cl. B29C 65/18 (2006.01); H01M 10/04 (2006.01); H01M 50/186 (2021.01); B29L 31/34 (2006.01)
CPC B29C 65/18 (2013.01) [H01M 10/04 (2013.01); H01M 50/186 (2021.01); B29L 2031/3468 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A sealing device for a secondary battery, the sealing device configured to seal a battery case accommodating an electrode assembly therein to manufacture the secondary battery, the sealing device comprising:
a sealing block configured to press a sealing portion of the battery case;
a flatness adjusting part configured to adjust a flatness of a pressing surface of the sealing block, the flatness being closeness of a portion of the pressing surface to a plane defined by a remainder of the pressing surface; and
a heater part configured to transfer heat to the sealing block to thermally fuse the sealing portion of the battery case when the sealing portion is pressed by the sealing block.