Device for impact welding of battery terminals

Patent metadata

Field	Value
Publication number	US-12451569-B2
Application number	US-202217587126-A
Country	US
Kind code	B2
Filing date	Jan 28, 2022
Priority date	Jan 28, 2022
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Disclosed herein is 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.

First claim

What is claimed is:

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.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Cai Wayne
• Rinker Teresa Jean
• Bracey Jennifer Therese
• Zhang Shunyi

Classifications

• B23K11/0026

  Welding of thin articles · CPC title

• B23K2101/36

  Electric or electronic devices · CPC title

• B23K2101/38

  Conductors · CPC title

• B23K20/06

  by means of high energy impulses, e.g. magnetic energy · CPC title

• H01M50/533

  characterised by the shape of the leads or tabs · CPC title