Patent ID: 11901589
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 6:
7. A secondary battery module, comprising:
a plurality of cylindrical secondary battery cells respectively having a battery case in which an electrode assembly and an electrolyte are accommodated;
a cell frame at which the plurality of cylindrical secondary battery cells is disposed; and
a bus bar electrically connected to the plurality of cylindrical secondary battery cells and having a fusing portion and a hole,
wherein the bus bar has at least one synthetic resin film having a hollow formed therein, and a conductive plate protected by the at least one synthetic resin film and having a welding portion,
wherein the fusing portion is entirely coplanar with the conductive plate, and the fusing portion, the hole and a peripheral portion of the welding portion are covered by the at least one synthetic resin film, and
wherein the welding portion has a width along a first direction and a length along a second direction, the width being less than the length,
wherein the fusing portion is parallel to the first direction and perpendicular to the second direction,
wherein the welding portion is divided into a first resistance welding portion and a second resistance welding portion by a cut portion formed at the center of the welding portion,
wherein the cut portion has a length parallel to the fusing portion, and is aligned with the fusing portion along the first direction, and
wherein the cut portion is enclosed by the first resistance welding portion and the second resistance welding portion of the welding portion, and not connected to the hole.