by, 07-20-2011 at 01:13 AM (514 Views)
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[QUOTE=joncammarata;2839317]Hey Folks, I know haven’t been very active in the forums lately. There is good reason though. I have been on a couple of Military related trips and of course spending my extra time building mods. I am sorry to you folks that I had to turn away. I just can’t keep up with the orders I have. I have also been working very hard to get my Battery Mod Finished and tested. So let’s get to it!
VIDEO LINK (will be entered soon)
My mod is an Ultra-capacitor- Li Ion battery Hybrid with an auto voltage Circuit. There will be three versions: The Hybrid, The Auto-Box Hybrid, and the Auto-Box Hybrid V2. I will explain those later in this post. I wanted to make a battery mod that was easy, different, small (as possible), and extended battery life. I managed to achieve all of these goals. This will be a fairly long read but I think you will be impressed with what I have created for you guys. As always, the poor man’s patent is done and the rich man’s patent is pending. Feel free to make one for personnel use and feel free to ask me for help. So let get to it.
I am going to explain the “Auto-Box Hybrid V2” since it incorporates all the options. How did I make it different? First, I simply used Ultra-capacitor’s (U-Caps). To be precise I used three 2.7volt 10 farad U-Caps ran in series to create a 10F, 8.1volt module. What does this do? Well, It relieves an extra-ordinary amount of battery stress. The Batteries will last at least 4 times longer and will hold their charge close to twice as long. Please see my engineering and technical resources below. You will also see my testing results in the Video Above. The batteries averaged a mere 650mili amp output. I knew I had a good Idea but I had no idea how good until I did my testing. I actually stood up and danced a jig because I spent a good deal of money on those U-caps without knowing for sure if it would work. Let’s talk about the Automatic voltage Adjustment Circuit.
I wanted to make it easy to use. Meaning, I wanted a VV mod that didn’t need a Knob sticking out or a small screw driver when you wanted to change voltage settings. So, I put a current regulating circuit. What this does is, it allows the user to screw any atty or carto in no matter what resistance and the circuit automatically adjusts to 1.85 +/- .05 Amps which is a little higher than the average current of a basic battery with a 2.2Ohm Atty (1.65 amps +/- .05) which most people agree is just a little too low. The Hybrid V2 has a small switch that lets you set it to 2.25 Amps. I read a lot of posts about what voltage people like with what type of atty. Almost, all of the time Ohms law said they preferred to vape an amperage of 1.8- 2.25. That is why I used those two settings. My personal box has 4 setting but I find I usually leave it on the 1.85Amp setting with a standard 2.2 Ohm atty. The circuit auto adjusts to 4.10 volts sometimes I kick it up to 2.2Amps just to impress my friends with a little extra vapor. Example, if you made or bought an Auto-Box Hybrid which always runs at 1.85amps these are the voltages you would get with some common atty’s: 1.8LR = 3.3V, 2.4Ohm = 4.44V, 2.8Ohm = 5.18V. In the last paragraph I’m going to talk about some more nifty features the Hybrid Box’s have.
If you are still reading this I want to say thanks for your time. Let’s finish up. In most mods the circuit has adjustment resisters and potentiometers that dissipate energy to ground. This mod has none of that mess. If the button is not pushed no energy is being dissipated which means there is no need for an on off switch. Further, since the batteries last at least 4 times longer the mod will eventually pay for itself. The longer lasting charge adds to convenience. Finally since the U-Caps are always ready and willing to kick ass, you will get a consistent solid hit throughout the life of the charge. You won’t get a decrease in performance as the batteries start to get tired like you do with other batteries because the two 14500 Li Ion Batteries will keep the U-caps at 7.5-8.1 volts locked and cocked and ready to rock.
The three Versions are as follows:
Auto-Box Hybrid V2 – automatically adjusts voltage between 1.5 -7.5 Volts. Uses a Hybrid battery system that greatly extends life and charge. Can be set to 1.85 amps or 2.25 amps
Auto-Box Hybrid – Set to 1.85Amps and automatically adjusts voltage between 1.5 -7.5 Volts. Uses a Hybrid battery system that greatly extends life and charge.
The Hybrid- Basic 3.7 Volt 1800MAH Battery Box that uses Hybrid Battery system to greatly extend battery life and charge duration. Still has the benefit of a consistent hit like the advanced mods above.
Well that’s it. I am very proud of this mod and would love to entertain any questions or comments you guys might have. Peace!
Since ultracapacitors have a much lower internal resistance and much faster charge rate than batteries, they make battery-powered systems run more efficiently. Ultracapacitors make batteries last longer because they do the brunt of the work when the load is initially switched on and allow the battery to pick up load gradually, preventing high current draws from the battery. Avoiding high current drain on batteries avoids thermal, chemical, and mechanical stresses. Current spike (and internal temperature) reductions extend battery life as much as 400%, depending on the application.
Resource: [URL="http://www.controleng.com/industry-news/top-stories/single-article/ultracapacitor-battery-hybrid-energy-storage/4142934b31.html"] [/URL][URL="http://www.controleng.com/industry-news/top-stories/single-article/ultracapacitor-battery-hybrid-energy-storage/4142934b31.html"]www.controleng.com[/URL] , Brenan Andrews
[I][FONT="]In this topology, the stress and oscillations of the battery current is reduced which results in the size and cost reduction of the battery and increases the lifetime. Presented results show that the power management based on hybrid system reduces the stress in battery current without sacrificing the performance.[/FONT][/I]
[I][FONT="]Resource: [/FONT][/I]Zhihao Li, Omer Onar, Alireza Khaligh, Erik Schaltz (2009) Design, Control, and Power Management of a Battery/Ultra-Capacitor Hybrid Systems
[FONT="]The performance of a battery–ultracapacitor hybrid[/FONT]
[FONT="]power source under pulsed load conditions is analytically[/FONT]
[FONT="]described using simplified models. We show that peak power can[/FONT]
[FONT="]be greatly enhanced, internal losses can be considerably reduced,[/FONT]
[FONT="]and that discharge life of the battery is extended. Greatest benefits[/FONT]
[FONT="]are seen when the load pulse rate is higher than the system[/FONT]
[FONT="]eigen-frequency and when the pulse duty is small. Actual benefits[/FONT]
[FONT="]are substantial; adding a 23 F ultracapacitor bank (3 7 PC10[/FONT]
[FONT="]ultracapacitors) in parallel with a typical Li-ion battery of 7.2[/FONT]
[FONT="]V and 1.35 A hr capacity can boost the peak power capacity[/FONT]
[FONT="]by 5 times and reduce the power loss by 74%, while minimally[/FONT]
[FONT="]impacting system volume and weight, for pulsed loads of 5 A, 1 Hz[/FONT]
[FONT="]repetition rate, and 10% duty.[/FONT]
[FONT="]Resource: [/FONT][FONT="]Power and Life Extension of Battery–Ultracapacitor[/FONT]
[FONT="]R. A. Dougal, Senior Member, IEEE, Shengyi Liu, Member, IEEE, and Ralph E. White[/FONT]
Many more resources were used and can be easily found with a google-ing “Ultra-capacitor battery Hybrid”[/QUOTE]