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US 12,603,393 B2Granted
Battery module
AssigneeSK On Co., Ltd.
InventorsGyu Jin Chung, Majid Abbasi Gharacheh, Yunjo Ro, Seung Hoon Ju
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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.
Claims19
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, and
- the welding bead satisfies Equations 1 and 2 below,
- 2T≤W<7T [Equation 1]
- wherein in Equation 1, W is a width of the welding bead based on a cross section of the welding bead in a thickness direction of the plate, and T is a thickness of the electrode tab,
- 0.5T≤H<3T [Equation 2]
- wherein in Equation 2, H is a height of the welding bead based on the cross section of the welding bead in the thickness direction of the plate, and T is the thickness of the electrode tab,
- wherein the electrode tab and the plate are made of different materials, and
- wherein the welding bead includes:
- a cover part having a convex shape covering the hole on one of two opposing surfaces in the thickness direction of the plate, and a pillar part charged into the hole, based on the cross section of the welding bead in the thickness direction of the plate.
11 more elements
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, and
- the welding bead satisfies Equation 3 below,
- T2≤A<21T2 [Equation 3]
- wherein in Equation 3, A is a cross-sectional area of the welding bead based on a cross section of the welding bead in a thickness direction of the plate, and T is a thickness of the electrode tab,
- wherein the electrode tab and the plate are made of different materials, and
- wherein the welding bead includes:
- a cover part having a convex shape covering the hole on one of two opposing surfaces in the thickness direction of the plate, and a pillar part charged into the hole, based on the cross section of the welding bead in the thickness direction of the plate.
9 more elements
A battery module, comprising:
- a plurality of battery cells, each battery cell having an electrode tab protruding from opposite sides thereof and forming a first plurality of electrode tabs on a first side of the battery module which are spaced apart from each other at a first regular interval;
- and
- a bus bar including a plurality of holes spaced apart at a second regular interval,
- wherein the first and second regular intervals are the same,
- wherein the electrode tabs in the first plurality of electrode tabs are each inserted in a corresponding one of the plurality of holes of the bus bar, and coupled to the bus bar by a welding bead, and
- wherein the welding bead satisfies Equations 1 and 2 below,
- 2T≤W<7T [Equation 1]
- wherein in Equation 1, W is a width of the welding bead based on a cross section of the welding bead in a thickness direction of the bus bar, and T is a thickness of the electrode tab, and
- 0.5T≤H<3T [Equation 2]
- wherein in Equation 2, H is a height of the welding bead based on the cross section of the welding bead in the thickness direction of the bus bar, and T is the thickness of the electrode tab,
- wherein the electrode tab and the bus bar are made of different materials, and
- wherein the welding bead includes:
- a cover part having a convex shape covering the hole on one of two opposing surfaces in the thickness direction of the bus bar, and a pillar part charged into the hole, based on the cross section of the welding bead in the thickness direction of the bus bar.
10 more elements
Dependencies are inferred from the claim text.