Granted Patent B2

US 12,451,569 · App. 17/587,126 · Granted Oct 21, 2025

Inventors: Wayne Cai (Troy, MI); Teresa Jean Rinker (Royal Oak, MI); Jennifer Therese Bracey (Holly, MI); Shunyi Zhang (Troy, MI)

Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC

H01M50/566B23K11/0026B23K2101/36

Abstract

Claims (17)

1. A device for magnetic welding of battery boils comprising:

a coil holder; where the coil holder comprises one or more electrical coils that are operative to be activated by an electrical current;

a foil holding fixture; wherein the foil holding fixture comprises a plurality of arms; wherein each pair of adjacent arms is operative to move towards one another to crimp a plurality of battery foils; and

an anvil; wherein the anvil is operative to support a battery tab and the battery foils.

2. The device of claim 1 , wherein each pair of adjacent arms move symmetrically about a vertical axis through a coil.

3. The device of claim 1 , wherein each pair of adjacent arms are located symmetrically about the one or more electrical coils.

4. The device of claim 1 , wherein the coil holder further comprises a plurality of sets of electrical coils; where each set of electrical coils is located at a different height from a surface of the coil holder.

5. The device of claim 1 , where each electrical coil of the one or more electrical coils is activated by an electrical current of a different strength.

6. The device of claim 4 , where each set of electrical coils is activated by an electrical current of a different strength.

7. The device of claim 1 , where the coil holder comprises an electrically insulating material.

8. The device of claim 7 , wherein the electrically insulating material comprises an organic polymer, a ceramic or a combination thereof.

9. The device of claim 1 , wherein the plurality of arms are transported along guide rails; where the arms have grooves at a rear end that mesh with the guide rails.

10. The device of claim 1 , wherein the coil holder is in communication with a source of electrical energy.

11. The device of claim 1 , wherein the plurality of arms comprise an electrically insulating material.

12. The device of claim 4 , wherein each set of electrical coils activates bonding in a different region of the plurality of battery foils.

13. The device of claim 12 , wherein different sets of electrical coils may be activated simultaneously.

14. The device of claim 12 , wherein different sets of electrical coils may be activated sequentially.

Assignments (1)

Continuity (1)

References Cited (14)