US 11,808,693 B2
Apparatus for measuring peel strength of battery part using electromagnet and peel strength measurement method using the same
Yeon Kyong Wang, Daejeon (KR); Chan Woo Park, Daejeon (KR); and Jin Seop Kwak, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 16/959,664
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jul. 23, 2019, PCT No. PCT/KR2019/009111
§ 371(c)(1), (2) Date Jul. 1, 2020,
PCT Pub. No. WO2020/085619, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 10-2018-0128606 (KR), filed on Oct. 26, 2018.
Prior Publication US 2021/0080377 A1, Mar. 18, 2021
Int. Cl. G01N 19/04 (2006.01); G01N 3/08 (2006.01)
CPC G01N 19/04 (2013.01) [G01N 3/08 (2013.01); G01N 2203/005 (2013.01); G01N 2203/0014 (2013.01); G01N 2203/0091 (2013.01); G01N 2203/02 (2013.01); Y02E 60/10 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A peel strength measurement apparatus using an electromagnet, the peel strength measurement apparatus comprising:
a test piece fixing unit configured to fix a test piece comprising at least two layers;
a magnetic material attached to at least one surface of the test piece;
an electromagnet configured to apply magnetic force to the magnetic material;
a power supply unit configured to supply electric power to the electromagnet such that the electromagnet generates a magnetic field; and
a current controller configured to control supply of electric power from the power supply unit to the electromagnet,
wherein strength of adhesion between the magnetic material and the test piece is higher than peel strength of the test piece.