Apple patents battery pouch with notch to vent pressure safely
Apple has filed a patent for a battery design featuring a small notch in the packaging material. This notch is intended to allow the pouch to tear open at a specific spot if internal pressure builds up beyond a safe limit.
In the filing’s own words
The present disclosure is directed to a battery including a plurality of electrodes and a pouch defining a pouch interior configured to enclose the plurality of electrodes. The pouch includes a plurality of layers including a nylon layer, a polypropylene layer, and an aluminum layer between the nylon layer and the polypropylene layer, where the polypropylene layer is closer to the pouch interior than the nylon layer and the aluminum layer. The pouch also includes a notch formed in at least one layer of the plurality of layers, wherein the notch is configured to facilitate a break in the pouch through the plurality of layers at or adjacent to the notch based on a pressure being applied in the pouch interior exceeding a threshold pressure.
What exactly they claim (claim 1)
1. A battery comprising: a plurality of electrodes; and a pouch defining a pouch interior configured to enclose the plurality of electrodes, wherein the pouch comprises: a plurality of layers comprising a nylon layer, a polypropylene layer, and an aluminum layer between the nylon layer and the polypropylene layer, wherein the polypropylene layer is closer to the pouch interior than the nylon layer and the aluminum layer; and a notch formed in at least one layer of the plurality of layers, wherein the notch is configured to facilitate a break in the pouch through the plurality of layers at or adjacent to the notch based on a pressure being applied in the pouch interior exceeding a threshold pressure.
Facts
- Company
- Apple (Apple Inc.)
- Official title
- PRESSURE RELIEF NOTCH ON A POUCH OF A BATTERY
- Publication number
- US20260302505A1
- Application number
- 19094346
- Filed
- Mar 28, 2025
- Published
- Oct 1, 2026
- Inventors
- 4
- Claims
- 20
Classified under
H01M 50/3425 Electricity & electronicsH01M 10/0436 Electricity & electronicsH01M 50/105 Electricity & electronicsH01M 50/119 Electricity & electronicsH01M 50/121 Electricity & electronicsH01M 50/128 Electricity & electronicsMore from Apple in Batteries & energy
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.