Battery module
AssigneeSK On Co., Ltd.
InventorsGyu Jin Chung, Majid Abbasi Gharacheh, Yunjo Ro, Seung Hoon Ju
Life of this patent
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Abstract
The present disclosure relates to a battery module comprising: a plurality of battery cells each including an electrode tab; and a bus bar connected to the electrode tab to electrically connect the plurality of battery cells to each other. The bus bar includes a plate having a plurality of holes. The electrode tab of each of the battery cells is inserted into at least a part of the plurality of holes of the plate. The electrode tab inserted into the hole and the plate are coupled to each other by a welding bead, and the welding bead has a width and a height defined by Equations 1 and 2, respectively.
Claims16
A battery module, comprising:
- a plurality of battery cells each including an electrode tab;
- and
- at least one bus bar connected to the electrode tab of each of the battery cells to electrically connect the plurality of battery cells to each other,
- wherein the bus bar includes a plate in which a plurality of holes are formed,
- the electrode tab of each of the battery cells is inserted into at least a part of the plurality of holes of the plate,
- the electrode tab inserted into the hole and the plate are coupled to each other by a welding bead,
- the electrode tab is a first base material for welding, and the plate is a second base material for welding,
- the dilution of the first base material is 89 to 99%, and the dilution of the second base material is 1 to 11% in the welding bead,
- the electrode tab comprises a different material from the plate, and
- the welding bead includes:
- a cover part having a convex shape covering the hole on one of two opposing surfaces in a thickness direction of the plate, and a pillar part charged into the hole, based on a cross section of the welding bead in the thickness direction of the plate.
Dependencies are inferred from the claim text.