Energy storage device and related methods

Patent metadata

Field	Value
Publication number	US-10446817-B2
Application number	US-201615283830-A
Country	US
Kind code	B2
Filing date	Oct 3, 2016
Priority date	Oct 2, 2015
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

The present disclosure relates to energy storage devices having: a sealed container configured to house a plurality of energy storage devices and enable electrical communication via terminals of the sealed container and a vent located on a periphery of the sealed container. The vent generally comprises a vent panel; a countersink located adjacent the vent panel; at least one score located in the countersink; a buckling initiator at least partially located on the countersink, where the buckling initiator is configured to intersect with the at least one score; and a hinge portion attached to the vent panel, where the hinge portion is positioned opposite the buckling initiator.

First claim

What is claimed is:

1. An apparatus comprising:
(a) a sealed container configured to house a plurality of energy storage devices and enable electrical communication via terminals of the sealed container; and
(b) a vent located on a periphery of the sealed container, the vent comprising:
(i) a vent panel;
(ii) a countersink located adjacent the vent panel;
(iii) at least one score located in the countersink;
(iv) a buckling initiator at least partially located on the countersink;
wherein the buckling initiator is configured to intersect with the at least one score; and

(v) a hinge portion attached to the vent panel;
wherein the hinge portion is positioned opposite the buckling initiator;
wherein the vent panel is configured to move via the hinge.

2. The apparatus of claim 1 , wherein the vent is integral with the sealed container.

3. The apparatus of claim 1 , wherein the countersink comprises at least one unscored portion.

4. The apparatus of claim 1 , wherein the apparatus comprises a support matrix configured to house at least some of the plurality of electrical storage devices.

5. The apparatus of claim 4 , wherein the support matrix comprises an energy absorbing material, or a flame arresting material, or both an energy absorbing material and a flame arresting material.

6. The apparatus of claim 4 , wherein the support matrix is configured to maintain at least some of the plurality of electrical storage devices in spaced relation from each other.

7. The apparatus of claim 1 , wherein at least one of the plurality of electrical storage devices comprises a Li-ion battery.

8. The apparatus of claim 1 , wherein the buckling initiator is configured as a score set in a perpendicular direction to the at least one score.

9. The apparatus of claim 1 , wherein the hinge portion is an unscored hinge portion.

10. The apparatus of claim 1 , wherein the countersink is a circumferential countersink and wherein the at least one score is a circumferential score.

11. The apparatus of claim 10 , wherein:
the circumferential score has a score length;
the hinge portion has a hinge length; and
a ratio of the hinge length to score length is from 0.2 to 0.65.

12. The apparatus of claim 1 , wherein the apparatus comprises:
(iv) a current interrupt device comprising a dome actuator.

13. The apparatus of claim 1 , wherein the vent panel is configured to move outwardly relative to the periphery of the sealed container, via the hinge.

14. The apparatus of claim 13 , wherein the vent panel is a solid geometric shape.

15. The apparatus of claim 14 , wherein the vent panel is in the form of a circle.

Assignees

• Alcoa Inc
• Arconic Inc

Inventors

• Jarvis Glenn W
• Dick Robert E
• Weiland Hasso
• Fridy Joseph M
• Mcneish David J
• Cobes John W
• Bhattacharyya Rabindra K
• Krish John M
• Ference David M
• Watters Brock
• Catrambone Gregory

Classifications

• H01M2200/20

  Pressure-sensitive devices · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M2/1241 Primary

  Electricity · mapped topic

• H01M2/12

  Electricity · mapped topic

• H01M2/345

  Electricity · mapped topic