US 11,811,076 B2
Secondary battery and method for manufacturing the same, and pressing block for manufacturing secondary battery
Sung Chul Park, Daejeon (KR); Sang Wook Kim, Daejeon (KR); Dae Won Lee, Daejeon (KR); and Dong Hyeuk Park, Daejeon (KR)
Assigned to LG Energy Solution, Ltd.
Appl. No. 16/466,212
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Aug. 29, 2018, PCT No. PCT/KR2018/009988
§ 371(c)(1), (2) Date Jun. 3, 2019,
PCT Pub. No. WO2019/045447, PCT Pub. Date Mar. 7, 2019.
Claims priority of application No. 10-2017-0109442 (KR), filed on Aug. 29, 2017; and application No. 10-2018-0100284 (KR), filed on Aug. 27, 2018.
Prior Publication US 2020/0067029 A1, Feb. 27, 2020
Int. Cl. H01M 50/105 (2021.01); B29C 53/06 (2006.01)
CPC H01M 50/105 (2021.01) [B29C 53/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for manufacturing a secondary battery, the method comprising:
a forming step of forming a pouch sheet to form an accommodation part, in which an electrode assembly is accommodated, first sealing parts, and a gas pocket part;
a folding step of folding the pouch sheet with respect to a folding part so that the electrode assembly is accommodated in the accommodation part and the first sealing parts contact each other to block the electrode assembly from an outside environment to form a battery case; and
an anti-wrinkle step, after performing the folding step, of bending the first sealing parts at a corner adjacent the folding part and opposite the gas pocket part relative to the accommodation part to form an anti-wrinkle part that prevents wrinkles from being generated on an outer shell of the battery case.