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With electronics ever shrinking, the biggest components these days are batteries. Electronics are shrinking because of integrated monolithic design. More and more functions can be included on a single chip. Often products are little more than the single chip and a battery. Let's take the next step
and integrate the battery.
Layers of lithium anode and one of many cathode chemistries are stacked directly on top of the silicon wafer, and sealed inside the package. Thus, a single chip becomes a fully operational self powered device. This creates the lowest resistance path between the power source and consumer, increasing efficiency. Eliminating the battery packaging also eliminates weight.
This design is not without drawbacks, namely the non-replaceable battery. However, it has several advantages for niche applications. The smaller weight and bulk makes it ideal for miniature flying devices. Security dongles can be very tiny, and the integrated battery allows it to execute key dump routines if it detects tampering. It would even be a boon for cheap disposable novelty electronics.
If rechargeable battery chemistry is used, even more designs become available.
On-chip Battery Debuts
http://www.trnmag.c...s_Brief_032603.html Baked in '02 [csea, Jun 10 2010]
Grad student project at UC Berkeley
http://www.mse.berk...WIRELESS_NODES.html Not sure how well this would survive soldering temperatures. [csea, Jun 10 2010]
A commercially available chip
http://parts.usbid.com/MK48T08B15.html "Reconditioned"? [csea, Jun 10 2010]
[1] How to replace the battery in a DS1287 to get your IBM PS/2 55SX working again
http://www.instruct...r-an-IBM-PS2-55SX-/ Mentioned in my anno [notexactly, Mar 24 2018]
[2] How to fix an IBM PS/2 55SX with dead DS1287
https://electronics...287-real-time-clock Mentioned in my anno [notexactly, Mar 24 2018]
[3] Historical page on the IBM PS/2 55SX historical page mentioning possible years of introduction
https://ancientelec...ibm-ps2-model-55sx/ Mentioned in my anno [notexactly, Mar 24 2018]
[4] Cymbet EnerChip RTC product page, which mentions rechargeability but the capacity ratings are confusing
http://www.cymbet.c...eal-time-clocks.php Mentioned in my anno [notexactly, Mar 24 2018]
[5] News brief on Cymbet EnerChip RTC being introduced in 2012
http://www.electron...solid-state-battery Mentioned in my anno [notexactly, Mar 24 2018]
[link]
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Isn't this called an iPod? |
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The Dallas DS1287 real-time clock chip has a built-in non-
rechargeable battery. I don't know when it was
introduced, but it was used in the IBM PS/2 55SX [1][2],
which was introduced in 1987, 1988 or 1989 [3]. However,
it's not rechargeable, so it's only a preheat, I think. (I
read this idea to imply rechargeability.) |
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However, Cymbet's EnerChip RTC line [4], introduced in
2012 [5], consists of
real-time clocks with integrated rechargeable batteries.
However, I am not sure if this counts as a bake because
I'm not sure whether this idea intends the battery to
power just the one chip or the whole device. |
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