Systems and methods for manufacturing battery cells

• US 8,945,763 B2
• Filed: 01/21/2013
• Issued: 02/03/2015
• Est. Priority Date: 01/31/2012
• Status: Active Grant

• Current Assignee: CPS Technology Holdings, LLC
• Original Assignee: Johnson Controls Technology Company (Johnson Controls International plc)
• Inventors: Tyler, Matthew R., Fuhr, Jason D.
• Primary Examiner(s): Walls, Cynthia K.
• Application Number:
  US13/746,054
• Publication Number:
  US 20130196197A1
• Time in Patent Office: 743 Days
• Field of Search: None
• US Class Current: 429/183
• CPC Class Codes: H01M 50/176 for prismatic or rectangular cells H01M50/181 takes precedence
• CPC Class Codes: H01M 50/179 for cells having curved cross-section, e.g. round or elliptic H01M50/176, H01M50/181 take precedence
• CPC Class Codes: H01M 50/3425 in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
• CPC Class Codes: H01M 50/528 Fixed electrical connections, i.e. not intended for disconnection
• CPC Class Codes: H01M 50/536 characterised by the method of fixing the leads to the electrodes, e.g. by welding
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y10T 29/4911 including sealing

Abstract

A system includes a battery cell having a packaging and a coil disposed within the packaging. The battery cell further includes a first terminal electrically coupled to a portion the coil and protruding through an opening in the packaging, wherein the first terminal is hermetically sealed at the opening in the packaging using a compressive force.

Claims

1. A system, comprising:

a battery cell, comprising;

a packaging having a first terminal port defined by a first cupped portion that extends outwardly from the surface of the packaging;

a coil disposed within the packaging;

a first terminal electrically coupled to a portion the coil and protruding through the first terminal port of the packaging; and

a first press-fit ring that surrounds the first cupped portion and provides a first radially inward compressive force to the first cupped portion that hermetically seals the first terminal in the first terminal port.

2. The system of claim 1, wherein the battery cell comprises an insulating gasket disposed between the first cupped portion and the first terminal in the first terminal port.

3. The system of claim 1, comprising a second terminal electrically coupled to a different portion of the coil, wherein the packaging has a second terminal port defined by a second cupped portion that extends outwardly from the surface of the packaging, wherein the second terminal protrudes through the second terminal port, and comprising a second press-fit ring that surrounds the second cupped portion and provides a second radially inward compressive force to the second cupped portion that hermetically seals the second terminal in the second terminal port.

4. The system of claim 1, wherein the packaging of the battery cell comprises a vent feature stamped into the packaging.

5. The system of claim 1, wherein the packaging is prismatic, cylindrical, or oblong cylindrical in shape.

6. The system of claim 1, wherein the packaging is metallic or polymeric.

7. The system of claim 1, wherein the packaging has a neutral polarity.

13. The system of claim 1, wherein a portion of the first terminal that is hermetically sealed in the first terminal port is substantially smooth.

14. The system of claim 1, wherein the first press-fit ring is metallic.

15. The system of claim 1, wherein the packaging is polymeric.

16. The system of claim 1, wherein the packaging has a positive or negative polarity.

17. The system of claim 3, wherein a portion of the second terminal that is hermetically sealed in the second terminal port is substantially smooth.

18. The system of claim 3, wherein the battery cell comprises an insulating gasket disposed between the second cupped portion and the second terminal in the second terminal port.

19. The system of claim 3, wherein the second press-fit ring is metallic.

8. A battery cell package, comprising:

a first terminal port defined by a first cupped portion extending outwardly from a face of the package, wherein the first terminal port is configured to allow a first terminal to extend through the package, and wherein the first cupped portion is configured to be compressed inwardly toward the first terminal by a first press-fit ring to seal the first terminal in the first terminal port.

9. The battery cell package of claim 8, comprising a second terminal port defined by a second cupped portion extending outwardly from the face of the package, wherein the second cupped portion is configured to allow a second terminal to extend through the package, and wherein the second cupped portion is configured to be compressed inwardly toward the second terminal by a second press-fit ring to seal the second terminal in the second terminal port.

10. The battery cell package of claim 9, wherein the first terminal port is configured to receive a first insulator gasket, and wherein the first insulator gasket is configured to be disposed between the first terminal and the first cupped portion, and wherein the second terminal port is configured to receive a second insulator gasket, and wherein the second insulator gasket is configured to be disposed between the second terminal and the second cupped portion.

20. The battery cell package of claim 10, wherein the first and second insulator gaskets are shaped like the first and second cupped portions, respectively.

11. A method of manufacturing a battery cell, comprising:

providing a battery package having a terminal port defined by a cupped portion extending outwardly from the battery package;

disposing a coil assembly in the battery package, wherein the coil assembly comprises a coil coupled to a terminal; and

disposing a press-fit ring around the cupped portion to inwardly compress the cupped portion and then passing the terminal through the terminal port with sufficient pushing and/or pulling force to hermetically seal the terminal in the terminal port.

21. The method of claim 11, comprising disposing an insulating gasket in the cupped portion before passing the terminal through the terminal port.

12. A method of manufacturing a battery cell, comprising:

providing a battery package having a terminal port defined by a cupped portion extending outwardly from the battery packaging;

disposing a coil assembly in the battery packaging, wherein the coil assembly comprises a coil coupled to a terminal; and

passing the terminal through the terminal port and then disposing a press-fit ring around the cupped portion to compress the cupped portion inwardly toward the terminal to hermetically seal the terminal in the terminal port.

22. The method of claim 12, comprising disposing an insulating gasket in the cupped portion before passing the terminal through the terminal port.