At the moment, because we have so far been unable to find cells of the right size (30-40 Ah) available on the retail market and for other reasons described...
I forgot the following: I reconfigured my battery spreadsheet to include two modules using paralleling, both by RabbitTool, and both using insulated metal...
... be ... about ... Ron, I find this very interesting. Specifically the reference to SOC. In the spreadsheet that you sent me, a 1.35V cell is at 90% SOC....
Ron: Your comments look good to me. I think you all recognize the problem with Ni cells. Our approach of monitoring temperature and voltage at least on a 12...
... I'm the un-named source who wrote to Ron earlier. Perhaps the various figures for SOC vs cell voltage are due partly to my not specifying the conditions...
All: Tim has a good idea of a solution to the problem. I'm not sure I like the idea of paralleling the original Prius pack and a lot of strings of small ...
Ron, May I ask if you had any luck talking to Harding Energy? They seem to have 20Ah cells also. They are not that powerful as D cells - about 5C only (100A...
The best solution I've heard yet for Parallel NiMH is here: http://autos.groups.yahoo.com/group/priusplus/message/302 - Seperate Isolated charging of series...
... [snip] ... It might not be physically possible to make an NiMH cell to meet the power density requirement. There seems to be a definite trend of power...
I'll try to cover all recent responses to my "Current battery strategy" message. I'll post my conclusions and proposal in a second posting, as otherwise this...
Due to the following six points (further explained in my previous posting of responses to recent comments), I still believe the RabbitTool modules (or...
I meant to upload and mention these updates in yesterday's posting. They are at Files/Battery Info/PrelimCustomNiMHSpecs_050209rdg.txt and Files/Battery...
... For non-members of the group who can't access the Files area (that's how Yahoo Groups are set up), we mirror major documents, but for these text files,...
FACT SHEET for CalCars PRIUS+ Prototype #1 version 1.1 Feb 18, 2005 CONTENTS Introduction 1. Specifications 2. Performance data of current prototype 3. Future...
Hi all This is a reminder for the Prius - Hybrid workshop at Sunnyvale Toyota. Beside there technical staff, they will have Mario Jaime, TMS Technical...
Jim Bohorquez sent me the spec sheet for a Saft module that looks promising for the PRIUS+. I posted it at Files/BatteryInfo/Saft_NHP_Data Sheet.pdf. I have...
Hello Crew: Intersting reports on NiMh batteries. Numbers in these reports woud indicate that Prius battery OEM costs is less than $600 ($300/kWh) 2. 100,000...
The latest PDF version of this document is found in the Files area of this Group, and mirrored as discussed below FACT SHEET for CalCars PRIUS+ Prototype #1...
You're currently a member of the PRIUS+ PHEV Conversion Group. We've tried to keep off-topic traffic down, writing you only when it was important. We've just...
We've promised our members that we'd be disciplined in keeping this list focused and low-traffic. Much as I support the content of the past two posts (one on...
Well, we're back to the possibility of paralleling complete strings of D cells. We have not yet learned anything from Saft. I received a datasheet of nice...
You should really bring up this idea on the EVDL. http://groups.yahoo.com/group/ev-list-archive ( see instructions to join ) There are some really bright guys...
While CalCars is getting closer to upgrading our lead-acid PRIUS+ with a nickel-metal hydride pack, EnergyCS has moved ahead with a lithium pack, using Valence...
Thanks, Felix. That was an interesting article. The only unanswered question besides cost, is how many charge/discharge cycles that lithium battery can take...
Rich in Orlando How can you do a serious article about comparing the cost of any battery chemistry and not know the total number of cycles? My guess is that...
Umm... If you noticed Felix didn't post the entire article. If you go to the Valence website: http://www.valence.com there is LOTS of information on the...
In the audio interview, one of the Valence people provides very general assurances on that subject. I have the impression that they don't yet have answers for...
Below is the latest version in text format. It's also available as a neat 3-page PDF document from links at http://www.calcars.org or http://www.priusplus.org ...
The PRIUS+ project has been moving forward since my last posting. Here are some of the things that have happened. I will pose a couple of questions for...
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