Battery

Patent metadata

Field	Value
Publication number	US-11594794-B2
Application number	US-202017109517-A
Country	US
Kind code	B2
Filing date	Dec 2, 2020
Priority date	Dec 11, 2019
Publication date	Feb 28, 2023
Grant date	Feb 28, 2023

Abstract

A battery includes: a core cell including a first surface and a second surface which are opposite each other and on which first and second electrodes are respectively located, and a lateral surface connecting the first and second surfaces; an insulating sheet arranged on the first surface of the core cell and in which a conduction hole facing the first electrode is defined; and an electrode plate arranged on the insulating sheet and electrically connected to the first electrode through the conduction hole.

First claim

What is claimed is:

1. A battery comprising:
a core cell comprising a first surface and a second surface which are opposite each other and on which first and second electrodes are respectively located, and a lateral surface connecting the first and second surfaces, the first surface being an outer surface of the core cell facing away from the second surface;
an insulating sheet arranged on the first surface of the core cell and in which a conduction hole facing the first electrode is defined; and
an electrode plate arranged on the insulating sheet such that the insulating sheet is between the electrode plate and the first surface of the core cell, the electrode plate electrically connected to the first electrode through the conduction hole.

2. The battery of claim 1 , wherein
the first and second surfaces of the core cell have a circular shape, and
the lateral surface of the core cell comprises a rounded circumferential surface connecting the first and second surfaces.

3. The battery of claim 1 , wherein the core cell has a cylindrical shape with a height less than a diameter of the first surface.

4. The battery of claim 3 , wherein an aspect ratio of the height of the core cell to the diameter of the first surface is in a range from about 5.4:12 to about 5.4:14.

5. The battery of claim 1 , wherein
the first electrode of the core cell is located at a center position of the first surface, and
the second electrode of the core cell extends from an entirety of the second surface via the lateral surface to a peripheral position of the first surface surrounding the center position of the first surface.

6. The battery of claim 5 , wherein the first and second electrodes are spaced apart from each other on the first surface with an insulating gap therebetween to electrically insulate therebetween.

7. The battery of claim 1 , wherein
the electrode plate is configured as a first output terminal of the battery which is connected to the first electrode and externally provides a potential of the first electrode, and
the second electrode is configured as a second output terminal of the battery.

8. The battery of claim 1 , wherein the conduction hole exposes at least a portion of the first electrode from the insulating sheet.

9. The battery of claim 1 , wherein a conductive connection member is arranged in the conduction hole to electrically connect between the first electrode and the electrode plate which are located on upper and lower sides of the insulating sheet.

10. The battery of claim 9 , wherein the conductive connection member comprises a compressible conductor which is compressible so as to be compressed in mutually-facing directions between the electrode plate and the first electrode for contact with the electrode plate and the first electrode.

11. The battery of claim 9 , wherein the conductive connection member comprises an anisotropic conductive film.

12. The battery of claim 9 , wherein a thickness of the conductive connection member is greater than a thickness of the insulating sheet surrounding the conduction hole before the conductive connection member is compressed, and is equal to the thickness of the insulating sheet after the conductive connection member is compressed.

13. The battery of claim 12 , wherein the electrode plate is in contact with both the conductive connection member, which is arranged in the conduction hole, and the insulating sheet which surrounds the conduction hole.

14. The battery of claim 1 , wherein the electrode plate has a size greater than a size of the first electrode.

15. The battery of claim 14 , wherein the electrode plate has a radius which is greater than a radius of the first electrode defined at a center position of the first surface and is less than a radius of the first surface.

16. The battery of claim 1 , wherein
the insulating sheet has a ring shape surrounding the conduction hole defined at a center position of the insulating sheet, and
the insulating sheet is arranged between the second electrode located at a peripheral position of the first surface and the electrode plate connected to the first electrode through the conduction hole.

17. The battery of claim 1 , wherein the insulating sheet is defined by an inner circumference and an outer circumference which define concentric circles, and the inner circumference corresponds to a boundary with the conduction hole.

18. The battery of claim 17 , wherein an extension end of the second electrode which extends from the second surface to a peripheral position of the first surface via the lateral surface is located on the inner circumference of the insulating sheet or between the inner circumference and the outer circumference of the insulating sheet.

19. The battery of claim 17 , wherein a radius of the outer circumference of the insulating sheet is greater than a radius of the electrode plate and less than a radius of the first surface.

20. The battery of claim 17 , wherein the conduction hole, the inner and outer circumferences of the insulating sheet, the electrode plate, and the first surface have concentric circle shapes.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Park Sanghun

Classifications

• H01M10/0477

  with circular plates · CPC title

• H01M50/109

  of button or coin shape · CPC title

• H01M50/24

  adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/216 Primary

  adapted for button or coin cells · CPC title