公开(公告)号：US11011804B2

公开(公告)日：2021-05-18

申请号：US16345862

申请日：2018-07-13

申请人： LG CHEM, LTD.

发明人： Hang-June Choi ,  Han-Jong Yoon ,  Kang-Il Lee

IPC分类号： H01M50/531 ,  B23K26/22 ,  H01M50/20 ,  H01M50/502 ,  H01M50/528

摘要： Provided is a battery module in which weldability between electrode leads and/or between an electrode lead and a bus bar is improved. The battery module includes: a cell assembly that includes a plurality of secondary batteries stacked in at least one direction, respectively including electrode leads, and electrically connected to each other via a connection between the electrode leads; and at least one bus bar that includes an electrically conductive material and is electrically connected by contacting the electrode leads of the plurality of secondary batteries, wherein at least one of the electrode leads is combined and fixed to at least one of another electrode lead and the at least one bus bar, which are contacted by the at least one of the electrode leads, via a welding spot formed in a tornado shape.

公开(公告)号：US11383331B2

公开(公告)日：2022-07-12

申请号：US16619441

申请日：2019-02-11

申请人： LG CHEM, LTD.

发明人： Dae-Ji Hong ,  Kang-Il Lee ,  Han-Jong Yoon ,  Jae-Hun Yang ,  Young-Bum Cho ,  Hang-June Choi

IPC分类号： B23K37/04 ,  B23K26/22 ,  B23K26/066 ,  B23K26/70 ,  H01M50/502 ,  H01M50/531 ,  B23K101/36

摘要： A spot welding jig is provided. The spot welding jig presses electrode leads of battery cells to be closely adhered onto a bus bar when spot welding is performed to the electrode leads interposed on the bus bar along a width direction of the electrode leads. The spot welding jig includes a passing portion through which a welding laser passes, and a predetermined number of barriers configured to vertically partition an inner space of the passing portion.