Pouch type lithium secondary battery having tubular passage structure
US-2016020452-A1 · Jan 21, 2016 · US
Consolidated fill port plug and safety vent for battery applications
US10700322B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10700322-B2 |
| Application number | US-201715474472-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 30, 2017 |
| Priority date | Mar 30, 2017 |
| Publication date | Jun 30, 2020 |
| Grant date | Jun 30, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A plug for a fill port of a battery cell includes a body defining a channel. The plug includes a cover coupled to the body and covering the channel. The cover is configured to open in response to predetermined conditions to vent the battery cell.
First claim
Opening claim text (preview).
What is claimed is: 1. A battery cell comprising: a header defining an opening for filling the battery cell with electrolyte; and a plug, inserted in the opening, defining a channel between an interior of the battery cell and an exterior of the battery cell and including a thin-film cover adhesively applied across the channel and configured to open in response to a pressure in the interior of the battery cell exceeding a predetermined pressure to vent the battery cell. 2. The battery cell of claim 1 wherein the thin-film cover is further configured to open in response to a temperature of the plug exceeding a predetermined temperature. 3. The battery cell of claim 1 wherein the thin-film cover is further configured to open in response to contact over a predetermined duration with a byproduct of electrolyte degradation in the battery cell that corrodes the thin-film cover. 4. The battery cell of claim 1 wherein the thin-film cover is a metal foil. 5. The battery cell of claim 1 wherein the thin-film cover is a plastic layer. 6. The battery cell of claim 1 wherein the thin-film cover is disposed across the channel on a surface of the plug that is adjacent the exterior of the battery cell. 7. The battery cell of claim 1 wherein the thin-film cover is disposed across the channel on a surface of the plug that is adjacent the interior of the battery cell. 8. The battery cell of claim 1 wherein the plug includes a head coupled to a shaft. 9. The battery cell of claim 8 wherein the shaft is threaded. 10. The battery cell of claim 8 wherein a cross sectional area of the head is greater than a cross sectional area of the shaft. 11. The battery cell of claim 8 wherein the shaft is barbed for one-time insertion. 12. The battery cell of claim 8 wherein the thin-film cover is disposed on the head. 13. The battery cell of claim 1 wherein the plug includes a body configured to be inserted and removed from an opening. 14. The battery cell of claim 1 wherein the plug includes a body configured for one-time insertion into an opening.
Assignees
Inventors
Classifications
Plugs · CPC title
- H01M50/308Primary
Detachable arrangements, e.g. detachable vent plugs or plug systems · CPC title
- H01M50/3425Primary
in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member · CPC title
Energy storage using batteries · CPC title
Safety devices for primary or secondary batteries · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10700322B2 cover?
- A plug for a fill port of a battery cell includes a body defining a channel. The plug includes a cover coupled to the body and covering the channel. The cover is configured to open in response to predetermined conditions to vent the battery cell.
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M50/308. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 30 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).