Note: I still plan to respond soon to all the responses to my recent battery and possible future directions post, but first: new news! Late last week I...
The Maxwell ucaps have a capacitance of 350F at 2.5 Volts. They are the size of the D-cell, but as Ron says, a bit lighter. Their energy storage is .5CV^2,...
I certainly agree with the notion of keeping an open mind toward UCaps, either Maxwell's or those of any of their worthy competitors: A few comments about...
I've just roughed out a spreadsheet for my school work. If anyone is interested, I can post it, but give me a month or so to clean it up.... It tries to...
In response to all your comments, here are a few more of my thoughts on supercaps: * The major reason for investigating these Maxwell supercaps is that they...
Interesting: the analysis seems simple enough to do but a spread sheet and the assumptions seems interesting. when you get it done, could you email the spread...
... I wonder if these equations absolutely must be the case? Must we expect the caps to function from 0-60? If they can help with acceleration from 0 to 10 or...
As I remember, Maxwell is selling the BCAP350s NOW at a penny per Farard, with quantity 1,000,000. They are also planning to raise their voltage at some...
... I'll have to recheck, but I believe full-out acceleration calls for continued current draw of at least 120A all the way from 0-60 (and above). The same...
I have done my calculations like these before putting the pack in ACRX. Granted, BEV is different application and demand for capacitor bank is actually higher....
My comments interspersed throughout... ... Let me do a fuel cost projection for a Ford ESCAPE+ based on what we've learned from my PRIUS+: EPA highway mileage:...
Thanks, Victor! I am observing exactly the same effects with the small supercap test setup on my PRIUS+. You have some *big *caps -- equivalent in capacity to...
Ron wrote: "With your car (the weight is probably on your website), how long at what voltage and current does it take to get from 0-60 mph at maximum ...
... Very good! I was hoping it would come out to about 2 miles/kWh! Has anyone been able to force a FEH into EV-mode and measure it? ... Well, As soon as I...
1. We want to show that a PRIUS+ need not have any limitations vs. a normal Prius. Therefore, the battery or battery/capacitor pack must be able to handle...
I don't want to be guilty of getting off track...(this won't!!!) Metal-hydride is too heavy for vehicle use. The only commmercial use of mass "raising" is when...
... I don't know (yet). I don't have logging instrumentation in various circuit places to track all these changes, and I'm curious to know these figures...
As far as I can figure out the Ford Hybrid 2WD weighs about 3200 lbs. and the 4WD weighs about 3800 lbs. (Curb weight.) For you way anal folks, the gasoline in...
The following may be especially helpful to non-members checking out the messages -- since searching on the Yahoo Group is not easy. Here's a selective...
... A few additional points, in after-thought: 1. We have seen a lot of stories recently, not only about PHEVs, but also in conjunction with biofuels. I...
I try to not intrude too much but below are some weight specs I put together recently from a single source: [Curb Weight: The weight of an empty vehicle,...
Some comments: With respect to point 1, that could defocus us quite a bit. On either the Prius or the Escape, we'd want to stick with the Atkinson engine,...
This post will cover: * Evolution of our focus from NiMH to Li-Ion * Possible next pack for Prius * Continued discussion on Ford Escape * Responses to comments...
To begin moving forward on Li-Ion cells, I would like to gather the following information. To avoid overloading the discussion group, if you have something,...
... Contact ACP, as they have already implamented an 18650 based solution. ... This is a very important aspect! We can design a BMS which will manage...
Hi all, I'm ready to set to and start adding a 'range booster' to my 01 Prius, alas its the saloon, not the newer type, to this end the battery will have to...
... Our standard cautionary notice: Be very careful of the high voltages involved, and the high currents available. Hire an electric vehicle engineer unless...
... Yes. I called these "cells" sub-modules. This has become a standard way of using Li-ion cells for large applications, e.g. in AC Propulsion's TZero EV. ...
... Thanks. I checked this out. Lots of discussion, but unfortunately little real data. ... You suspect right, but thanks. ... Interesting. I'll have to check...
Given the current discussion, I wanted to get my less-than-knowledgeable two cents in. As an aside, I was at a automakers powertrain conference about 2 years ...
