Battery Module and Electrode Tab Ultrasonic Wave Welding Method
AssigneeSK Innovation Co., Ltd.
InventorWook Hyun Kim
Life of this patent
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Abstract
Provided are a battery module and an electrode tab ultrasonic wave welding method. The present invention relates to a battery module and an electrode tab ultrasonic wave welding method by forming the electrode tab in a zigzag form in which the electrode tab extending upwardly is bent downwardly and then, again bent upwardly to allow the electrode tab formed in the zigzag form to absorb vibrations even when a welding portion formed in parallel with a battery cell is fused by ultrasonic wave vibrations, thereby minimizing damage to the battery cell.
Claims16
A battery module including at least two battery cells and an electrode tab extending from each of the battery cells and welded to each other by ultrasonic wave welding, the battery module comprising:
- an extension in which the electrode tab extending upwardly is bent downwardly and a welding portion in which the extension is again bent upwardly to form a welding surface in a direction parallel with the battery cell.
An electrode tab ultrasonic wave welding method of a battery module including at least two battery cells and an electrode tab extending from each of the battery cells and welded to each other by ultrasonic wave welding, the method comprising:
- Forming the welding portion forming the welding surface in direction parallel with the battery cell and the electrode tab including the extension extending so as to connect the welding portion to the battery cell;
- Fixing the welding portions so that the welding portions of the electrode tabs contact each other;
- and
- Performing ultrasonic wave welding to fuse the welding portions by ultrasonic wave vibrations.
Dependencies are inferred from the claim text.