Certainly there wil be use cases for all. But one thing you need to be aware of with recharge cycles on batteries. Is that a recharge cycle is only counted when the battery voltage falls below a certain percentage. I believe this percentage is difference for every chemistry type. But I can say that for lead acid batteries, the recharge cycle is two fold.
First of the battery discharge goes below 75% this is a normal recharge cycle. Second, if the battery goes below 60% discharge is is akin to taking away 100 normal discharge depth cycles. But again, other chemistries I know are going to be different as some stay fairly steady in voltage throughout their whole discharge cycle. On Thu, May 19, 2016 at 11:06 AM, zamek42 <[email protected]> wrote: > Hi All, > > On 05/19/2016 05:33 PM, Super Twang wrote: > >> @Lachlan >> Thanks for the info Lachlan. >> >> Re: Supercap reliability… >> My basic understanding is that if you design with supercaps for a >> “Everyday” (ie not too hardcore) indoor use case, and keep them within some >> pretty obtainable operating conditions they effectively last forever. >> Obviously there’s some ambiguity (“everyday” “pretty obtainable”, >> “effectively”) in the prior assertion, but... >> >> My particular use case — indoor temps but in a wall, 5v power — might see >> a temp range of 15° - 35°C max I’d guess. The 70°C - 105°C you’re talking >> about would have to be a pretty harsh/industrial environment, no? >> >> Does anyone (who has done it, or knows how) have a sense of how >> straightforward it is to achieve a supercap-based system design that keeps >> the components in a range that’d keep them healthy for “Effectively >> forever?” ie 20k+ cycles? (better than bats) 100k+? (effectively forever) >> Or, do the requirements we’re looking at for a basic, indoor, power system >> really push the supercaps into the “Quickly-used-up” zone? >> > Yes we have some experience about supercaps. > > We have an organ controller which is working two years ago, approximately > 3-4 on/off per day. Yes it is an indoor application. > Our second application is an industrial environment with Pandaboard which > is working since last september approximately 1 on/off per day. It is a > semi indoor environment. > Our third application is a timelapse camera system with Raspberry ( > http://1nap1perc.hu/pecsi-magashaz-bontas/ ) which is started at early of > march. It is an outdoor application which is working 7/24. > > In other point of view, if you checked the parameters of supercap for > example > http://www.newark.com/illinois-capacitor/506dcn2r7q/super-capacitor-aluminum-elect/dp/90R9922 > you can see: > > operating temperature: -40-+60C > Life cycles: 500000 > > A simple NiCd accumulator is much more weight, and its lifecycle is much > more less, the operating temperature is 0-45C and lifecycle is less than > 10000. > > So supercap seems to be ideal for power supply to an embedded system, but > it needs a little bit complicated controller electronic. > best regards, > > > -- > Zoltan (Zamek) Zidarics > programmer > email:[email protected] > Self Playing Pipe Organ Systems > http://replayorgan.eu > > -- > For more options, visit http://beagleboard.org/discuss > --- You received this message because you are subscribed to the Google > Groups "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/36c43943-2e37-e473-1524-398120205a19%40gmail.com > . > > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORqq6BJwaSB8AGeZbbx%3D5ehiowL_nhLSQPVQ7XBQDasGKw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
