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Ask an Expert Forum Ultra-Thin Energy Harvesting Circuit for RFID Timestamp Logging
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Ultra-Thin Energy Harvesting Circuit for RFID Timestamp Logging

alejo05
alejo05 10 months ago
Hi!

I'm are looking for a battery-free hardware solution that can generate enough energy upon handling to log a timestamp into an RFID chip’s internal memory. The key requirements are:

No battery – The device should harvest energy when the envelope is moved or handled (piezoelectric, RF, or other energy harvesting methods).

Ultra-thin form factor – Must fit inside an envelope with a maximum thickness of 1 cm.

Energy-efficient – Must generate just enough power to store a timestamp in an RFID chip.

Scalability – We plan to produce 16,000 units, so the solution should be cost-effective for mass production.

Do you know about any existing components that meet these requirements? If not, would you be able to suggest a different approach?
 
I was thinking about the PPA line but it might be too expensive for what I'm looking for. 
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  • dougw
    dougw 10 months ago +2
    What kind of handling is supposed to trigger this time stamp? It is unlikely you will have a reliable source of scavengable energy at the time of trigger, unless the handler is trying to intentionally…
  • shabaz
    shabaz 10 months ago +2
    "Must generate just enough power to store a timestamp in an RFID chip" "The device should harvest energy when the envelope is moved or handled " But where does the power come from to continuously run…
  • anniel747
    anniel747 10 months ago +1
    Deleted
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  • shabaz
    0 shabaz 10 months ago

    "maximum thickness of 1 cm."

    "We’ve explored non-lithium thin batteries, but manufacturers have discontinued most viable options"

    Varta make non-Lithium coin cells under 10 mm thickness:

    https://www.conrad.com/en/p/varta-v-80-h-button-cell-rechargeable-80h-nimh-80-mah-1-2-v-1-pc-s-254215.html

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  • shabaz
    0 shabaz 10 months ago

    "maximum thickness of 1 cm."

    "We’ve explored non-lithium thin batteries, but manufacturers have discontinued most viable options"

    Varta make non-Lithium coin cells under 10 mm thickness:

    https://www.conrad.com/en/p/varta-v-80-h-button-cell-rechargeable-80h-nimh-80-mah-1-2-v-1-pc-s-254215.html

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