Self charging cell phone battery
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From: bob on 14 Apr 2010 13:22 http://www.picturebusinessmag.com/article/cellphone-giant-nokia-recently-filed-patent-us-self-charging-cellphone-battery/1?sponsor=newsletter/digital-clique bob
From: William Sommerwerck on 14 Apr 2010 14:09 This general idea is hardly new. There have been patents for gadgets you attach to your leg, and body movements generate electricity to charge a battery. The problem with this patent is that it uses a piezo device. Unfortunately, they don't generate very much energy. You'd certainly be able to "top off" the battery, but I don't think you'd be able to bring it back from a heavy discharge very quickly. Maybe the former is all they care about.
From: sparky on 14 Apr 2010 20:15 On Apr 14, 2:09 pm, "William Sommerwerck" <grizzledgee...(a)comcast.net> wrote: > This general idea is hardly new. There have been patents for gadgets you > attach to your leg, and body movements generate electricity to charge a > battery. > > The problem with this patent is that it uses a piezo device. Unfortunately, > they don't generate very much energy. You'd certainly be able to "top off" > the battery, but I don't think you'd be able to bring it back from a heavy > discharge very quickly. Maybe the former is all they care about. Quite similar to the self winding mechanical wrist watches. Certainly nothing new !
From: Jeff Liebermann on 15 Apr 2010 12:16 On Wed, 14 Apr 2010 17:15:34 -0700 (PDT), sparky <sparky12x(a)yahoo.com> wrote: >Quite similar to the self winding mechanical wrist watches. >Certainly nothing new ! It's called "energy scavenging". It's a big thing in portable product design. If it reduces battery size, or eliminates the battery, it's a winner. I'm finding such ideas in watches, shoes, automobile shock absorbers, PDA's, etc. It will take a while for them to come to market but I expect them to be commonplace fairly soon. I'm surprised nobody has made a wind-up cell phone. Besides not requiring a battery or charger (uses a super-capacitor), it will keep the chronic talkers in line. Not exactly energy scavenging, but (in my opinion) just as good. Incidentally, I designed, prototyped, but never produced a paper tape printing pager in the early 1970's. The pager ran on batteries, but the 1/4" paper tape transport and printing was all wind-up mechanical. I also proposed a wind-up portable floppy disk drive in the 1980's, which was summarily rejected by literally everyone as a lousy idea. Oh well. -- Jeff Liebermann jeffl(a)cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
From: William Sommerwerck on 15 Apr 2010 15:44
> I'm surprised nobody has made a wind-up cell phone. Besides not > requiring a battery or charger (uses a super-capacitor), it will keep > the chronic talkers in line. Not exactly energy scavenging, but (in > my opinion) just as good. I have a hand-crank radio/flashlight/charger that can charge cell phones. The problem with building it into the phone iteself is that it's "too big" for such a small device. > Incidentally, I designed, prototyped, but never produced a paper tape > printing pager in the early 1970's. The pager ran on batteries, but > the 1/4" paper tape transport and printing was all wind-up mechanical. > I also proposed a wind-up portable floppy disk drive in the 1980's, > which was summarily rejected by literally everyone as a lousy idea. > Oh, well. As the drive would have to be connected to computer that could power it, and the wind-up mechanism + interface would be more complex than a motor -- what would be the point? |