US 12,412,934 B2
Battery pack
Sanghun Park, Yongin-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Mar. 16, 2022, as Appl. No. 17/696,087.
Claims priority of application No. 10-2021-0034239 (KR), filed on Mar. 16, 2021.
Prior Publication US 2022/0302509 A1, Sep. 22, 2022
Int. Cl. H01M 10/42 (2006.01); H01M 50/528 (2021.01); H02J 7/00 (2006.01)
CPC H01M 10/425 (2013.01) [H01M 50/528 (2021.01); H02J 7/0042 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
a battery cell including an electrode extending in a first direction;
a circuit portion connected to the electrode; and
a connection portion connecting between the electrode and the circuit portion, the connection portion including:
a conductive thermocompression bonding layer, and
a conductive pad layer having a concave accommodation space in a second direction intersecting with the first direction to accommodate a first portion of the conductive thermocompression bonding layer, at least a second portion of the conductive thermocompression bonding layer being directly between the electrode and the conductive pad layer, wherein
the conductive pad layer includes convex portions relatively protruding in the second direction and concave portions relatively concave in the second direction,
the convex and concave portions are arranged in an alternating pattern and are directly connected to each other,
the convex and concave portions are integral with each other and include a same metal, and
the conductive thermocompression bonding layer includes conductive particles supported on the convex portions and an insulating resin accommodated in the concave portions.