Re: [EVDL] Supercaps in EVs

2020-06-25 Thread Jay Summet via EV
I've seen them used mostly in buses for short term regen purposes (they can absorb lots of power very quickly from a heavy vehicle stopping, and then release it back out to accelerate back up to speedmore so than a battery pack) Jay On 6/25/20 2:10 PM, Lee Hart via EV wrote: A surplus

Re: [EVDL] Supercaps in EVs

2020-06-25 Thread EVDL Administrator via EV
In the early 2000s, Solectria (RIP) used supercaps experimentally as current levelers in EVs. They hoped to get more range out of lead batteries. The idea worked, to a degree, but the caps' rapid voltage fall meant they needed a DC:DC converter, and its (in)efficiency was a problem. Also, th

Re: [EVDL] Supercaps in EVs

2020-06-25 Thread David Chapman via EV
Maybe Dennis B is still monitoring this forum, he and Bill Dube might be familiar with this and willing to chime in. We discussed pack stiffening years ago and frankly thought it had been done to death by now. I have a few flight packs worth of BB600s that might be very useful with a Ucap booste

Re: [EVDL] Supercaps in EVs

2020-06-25 Thread Pestka Dennis via EV
Lee; Question from a novice who knows nothing about supercaps. Would these be on any use to help with battery sag when drag racing? Thanks; Dennis Sent from my iPhone > On Jun 25, 2020, at 1:08 PM, "Lee Hart via EV" wrote: > > A surplus house I occasionally buy from is offering these 2600 far

[EVDL] Supercaps in EVs

2020-06-25 Thread Lee Hart via EV
A surplus house I occasionally buy from is offering these 2600 farad 2.6v "boostcaps" for $36. https://www.goldmine-elec-products.com/prodinfo.asp?number=G24932&utm_source=Goldmine&utm_campaign=9211b9afc8-MAY23-2014_COPY_01&utm_medium=email&utm_term=0_15cb8e0368-9211b9afc8-60186738 They claim t