Folded headspace insulator

Patent metadata

Field	Value
Publication number	US-2022370811-A1
Application number	US-202117324556-A
Country	US
Kind code	A1
Filing date	May 19, 2021
Priority date	May 19, 2021
Publication date	Nov 24, 2022
Grant date	—

Abstract

A battery comprising a tubular battery housing having a first end and a second end. The first end and the second end can have a substantially same inner diameter and a substantially same outer diameter. The battery further comprises a battery cell within the tubular battery housing. The battery further comprises a top battery cover coupled to the first end and a bottom battery cover coupled to the second end to form a substantially sealed enclosure around the battery cell. Method for manufacturing the battery are also described.

First claim

What is claimed is:

1 . A battery comprising:
a battery cell within a battery housing; and a headspace insulator inserted between the battery cell and a top cover, the headspace insulator including an upper insulator portion, a lower insulator portion, and a neck joining the upper insulator portion and the lower insulator portion.

2 . The battery of claim 1 , wherein the neck includes a neck opening for accommodating a battery tab of the battery.

3 . The battery of claim 2 , wherein the neck opening accommodates a positive battery tab of the battery.

4 . The battery of claim 2 , wherein the neck opening accommodates a negative battery tab of the battery.

5 . The battery of claim 2 , wherein the neck displaces the battery tab from the battery housing.

6 . The battery of claim 3 , wherein the neck exerts a compressive force against the lower insulator portion to retain the lower insulator portion against the battery cell.

7 . The battery of claim 2 , further comprising an insulation tape around at least a portion of the battery tab.

8 . The battery of claim 1 , wherein the headspace insulator is comprised of electrically and thermally insulating material.

9 . The battery of claim 1 , wherein the upper insulator portion includes an opening for providing electrolyte to the battery.

10 . A method for manufacturing a battery, the method comprising:
inserting a battery cell within a battery housing; and providing a headspace insulator disposed between the battery cell and a top cover, the headspace insulator including an upper insulator portion, a lower insulator portion, and a neck joining the upper insulator portion and the lower insulator portion.

11 . The method of claim 10 , further comprising providing a neck opening within the neck and wherein a battery tab of the battery is at least partially encased within the neck opening.

12 . The method of claim 11 , wherein the battery tab is a positive battery tab.

13 . The method of claim 11 , wherein the neck insulates the battery tab from the battery housing.

14 . The method of claim 11 , further comprising providing an insulating tape to at least a portion of the battery tab.

15 . The method of claim 11 , further comprising providing, through the neck, a compressive force to the lower insulator portion to retain the battery cell.

16 . The method of claim 10 , wherein at least one of the upper insulator portion and the lower insulator portion are manufactured using a laser cutting process.

17 . The method of claim 10 , wherein at least one of the upper insulator portion and the lower insulator portion are manufactured using a stamping process.

18 . The method of claim 10 , wherein at least one of the upper insulator portion and the lower insulator portion are manufactured using an injection process.

19 . An implantable cardiac device (ICD) comprising:
a battery comprising:
a battery cell within a battery housing; and
a headspace insulator disposed between the battery cell and a top cover, the headspace insulator including an upper insulator portion, a lower insulator portion, and a neck joining the upper insulator portion and the lower insulator portion; and
a processor coupled to receive power from the battery.

20 . The ICD of claim 19 , wherein the neck includes a neck opening for accommodating a battery tab of the battery.

Assignees

• Medtronic Inc

Inventors

• Viavattine Joseph J
• Stockton Christopher T
• Zhao Hailiang
• Bomstad Timothy T
• Mallawaaratchy Jude M
• Patras George

Classifications

• A61N1/3758

  Packaging of the components within the casing · CPC title

• A61N1/37512 Primary

  Pacemakers · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/528

  Fixed electrical connections, i.e. not intended for disconnection · CPC title

• H01M50/169

  by welding, brazing or soldering · CPC title