US 11,916,207 B2
Battery cell including sealing tape for accelerating heat conduction
Wook Hee Jang, Daejeon (KR); Sang Sok Jung, Daejeon (KR); Sangjoon Park, Daejeon (KR); Roun Kim, Daejeon (KR); and Gilyoung Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 16/605,334
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Oct. 10, 2018, PCT No. PCT/KR2018/011894
§ 371(c)(1), (2) Date Oct. 15, 2019,
PCT Pub. No. WO2019/074269, PCT Pub. Date Apr. 18, 2019.
Claims priority of application No. 10-2017-0131574 (KR), filed on Oct. 11, 2017.
Prior Publication US 2021/0126311 A1, Apr. 29, 2021
Int. Cl. H01M 10/613 (2014.01); H01M 10/653 (2014.01); H01M 10/654 (2014.01); H01M 50/195 (2021.01); H01M 50/198 (2021.01); H01M 50/193 (2021.01); H01M 50/197 (2021.01); H01M 50/191 (2021.01); H01M 10/0587 (2010.01); H01M 50/119 (2021.01)
CPC H01M 10/613 (2015.04) [H01M 10/0587 (2013.01); H01M 10/653 (2015.04); H01M 10/654 (2015.04); H01M 50/119 (2021.01); H01M 50/191 (2021.01); H01M 50/193 (2021.01); H01M 50/195 (2021.01); H01M 50/197 (2021.01); H01M 50/198 (2021.01)] 9 Claims
OG exemplary drawing
 
1. A battery cell, comprising:
an electrode main body, in which a positive electrode and a negative electrode, each having an electrode mixture is coated on at least one surface of a metallic current collector, and a separation film interposed between the positive electrode and the negative electrode are wound together;
a cylindrical metal can, which accommodates the electrode main body together with an electrolyte solution, the cylindrical metal can having an open end;
a cap assembly closing the open end of the cylindrical metal can; and
a sealing tape attached to an exterior surface of the electrode main body so as to fix a distal end portion of the electrode main body, the sealing tape including a heat conductive material for accelerating heat conduction between the electrode main body and the metal can,
wherein the sealing tape includes:
a first conductive layer including the heat conductive material, the first conductive layer being a first film consisting of a metal material directly contacting an interior surface of the cylindrical metal can; and
a second conductive layer having an adhesive and heat conductive pigment particles dispersed within the adhesive, the second conductive layer bonding the first conductive layer to the exterior surface of the electrode main body, and all of the heat conductive pigment particles are dispersed in a region adjacent to an interface between the second conductive layer and the first conductive layer.