Battery module and manufacturing method thereof
AssigneeSK On Co., Ltd.
InventorsTae Gu Lee, Kenneth Kim, Yun Joo Noh
Life of this patent
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Abstract
The present invention provides a battery module, which includes: a plurality of battery cells which include electrode tabs, respectively; and one or more bus bars connected to the electrode tabs for electrically connecting the plurality of battery cells with each other, wherein each of the one or more bus bars includes a plate having one or more openings formed therein, and a plurality of adjacent electrode tabs among the electrode tabs are inserted into any one of the one or more openings of the plate to be electrically connected with each other.
Claims17
A battery module comprising:
- a plurality of battery cells which include electrode tabs, respectively;
- and
- a bus bar connected to the electrode tabs for electrically connecting the plurality of battery cells with each other,
- wherein the bus bar includes a plate having one or more openings formed therein,
- wherein each of the electrode tabs includes:
- a terrace portion having a sheath forming an outer surface of the terrace portion, the terrace portion extending upward;
- a first bent part extending from the terrace portion, wherein the first bent part is covered with insulation;
- a seat portion extended horizontally from the first bent part;
- and
- a second bent part bent upward from the seat portion,
- wherein the seat portion and the second bent part do not include any insulation,
- wherein the bus bar is placed on the seat portion and comes into contact with the seat portion,
- wherein at least two electrode tabs among the electrode tabs are inserted into one of the one or more openings of the plate to be electrically connected with each other, and
- wherein wobble type beads are formed at the end portions of the at least two electrode tabs.
A method of manufacturing a battery module, comprising:
- stacking a plurality of battery cells which include electrode tabs, respectively;
- bring a plurality of adjacent electrode tabs among the electrode tabs into contact with each other;
- inserting the plurality of adjacent electrode tabs into any one of one or more openings formed in a plate from one side thereof, so as to be disposed in any one of one or more openings;
- and
- electrically connecting the plurality of adjacent electrode tabs with each other;
- wherein each of the electrode tabs includes:
- a terrace portion having a sheath forming an outer surface of the terrace portion, the terrace portion extending upward;
- a first bent part extending for the terrace portion, wherein the first bent part is covered with insulation;
- a seat portion extended horizontally from the first bent part;
- and
- a second bent part bent upward from the seat portion,
- wherein the seat portion and the second bent part do not include any insulation,
- wherein the plate is placed on the seat portion and comes into contact with the seat portion,
- wherein the plate and the plurality of adjacent electrode tabs are connected with each other by laser welding,
- wherein a laser beam is repeatedly irradiated in a circular pattern, and centers of circles formed by the laser beam are arranged along a longitudinal axis of the end faces of the plurality of adjacent electrode tabs.
Dependencies are inferred from the claim text.