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Overunity Machines Forum



Joule Theif + Lead Acid Battery Pack = Range Extender for Electric Vehicles?

Started by juspot82, April 20, 2011, 08:44:40 AM

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juspot82

April 20, 2011, 08:44:40 AM
Not sure if it's been mentioned/tried before or if it's even possible. I don't know much about the joule theif circuit other than it lets you squeeze the last little bit of juice out of dead batteries.

With that in mind, can it be scaled up to work with say a bank of deep cycle 12v batteries in the 48-72v range? Will it damage the batteries to the point they can't be recharged?

This could possibly be a HUGE jump in the range of electric vehicles using standard lead acid batteries as long as it doesn't permanently discharge them. Not sure if the other battery technologies have similar drawbacks where they don't fully discharge before being considered dead. If a joule theif can work its magic on all battery types, then lithium battery packs should see a significant increase in performance.

Anyone have an old laptop with a lithium battery that can test? Bascially run it down to the point the laptop shuts off then add a joule theif and see if you can power back up and how long it will last, then recharge and run from joule theif the entire duration and compare the time.

resonanceman

#1
April 20, 2011, 07:31:05 PM
Quote from: juspot82 on April 20, 2011, 08:44:40 AM
Not sure if it's been mentioned/tried before or if it's even possible. I don't know much about the joule theif circuit other than it lets you squeeze the last little bit of juice out of dead batteries.

With that in mind, can it be scaled up to work with say a bank of deep cycle 12v batteries in the 48-72v range? Will it damage the batteries to the point they can't be recharged?

This could possibly be a HUGE jump in the range of electric vehicles using standard lead acid batteries as long as it doesn't permanently discharge them. Not sure if the other battery technologies have similar drawbacks where they don't fully discharge before being considered dead. If a joule theif can work its magic on all battery types, then lithium battery packs should see a significant increase in performance.

Anyone have an old laptop with a battery that can test? Bascially run it down to the point the laptop shuts off then add a joule theif and see if you can power back up and how long it will last, then recharge and run from joule theif the entire duration and compare the time.

juspot82

As far as I know , no one has made a JT big enough to do what you are talking about.....

Yes a JT could be used on an electric car........ It is said that it takes 20 or 30 charge cycles to condition a lead acid battery......after it is conditioned it will charge faster and have a few % more output.

I do not think that a  lithium battery will benefit as much..... I understand the primary cause of  lithium battery failure is cracking near the anode,  The  lithium expands as it charges then cracks as it is discharged......once there are to many cracks the battery is useless.

If I was going to try running a car like you describe I would work on making a BIG JT Ringer..........then adapt it to work as a charger
A good sized ringer on each running  battery fed by pulses from an additional battery might extend the range quite a bit.

gary

Edit

the ability of a JT to extract more power from so called dead batterys will not help with electric cars.....in general if you drain  a lead acid battery below 10.5V you are damaging it.
Sometimes charging  the battery with a JT will recondition it..........but it is probably wise to stay in the safe zone.


ltseung888

#2
February 18, 2012, 10:43:55 PM
It is possible with improved electronics - not the standard 2N2222 type Joule Thief.

One group trained by me some months ago said that they found a "commercial resonance condition" and they could recharge banks of 12V lead-acid batteries.  Please read the theory and my simple proof-of-concept experiments at overunityresearch.com - the ltseung888 bench.

You can also check the Patrick Kelly eBook Chapter 5.  He confirmed that he could recharge 12V batteries with a 1.5V AA battery - but worked best with 6V ones.  It is a matter of tuning.

Study the xls files.  Some showed negative COP.  Both the Input or Output Average Power can be negative.  That fact alone indicates "recharging circuits" with energy coming from the environment.  I used the term lead-out or bring-in energy.

May God Guide us all.

Compressible Fluids are Mechanical Energy Carriers. Air is not a fuel but is an energy carrier. (See reply 1097)
Gravitational or Electron Motion Energy can be Lead Out via oscillation, vibration, rotation or flux change systems.  We need to apply pulse force (Lee-Tseung Pulls) at the right time. (See reply 1106 and 2621)
1150 describes the Flying Saucer.  This will provide incredible prosperity.  Beware of the potential destructive powers.
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