Hello John, There are 54 cell groups in the modules. 54 cell groups /2 = 27 module groups which are three parallel consider as one cell.
Therefore 54 cell groups x 4.2 volts = 226.8 volts maximum. There are 9 modules groups with contains three parallel modules which becomes 27 modules per battery. I am using three batteries which have 9 modules at 8.4 volts per module which contain two cell groups. 9 modules x 2 cells groups becomes 18 each 4.2 volt cells per battery. The total voltage per battery should be 18 x 4.2V = 75.6 volts The three sub batteries in series, the total pack voltage should be 3 x 75.6 = 226.8 volts. Are you confused yet. It is best to draw out the wiring diagram to see it. Roland ----- Original Message ----- From: John Lussmyer<mailto:cou...@casadelgato.com> To: Electric Vehicle Discussion List<mailto:ev@lists.evdl.org> ; Roland<mailto:e...@msn.com> Sent: Friday, October 10, 2014 6:28 PM Subject: Re: Need Lithium batteries. On Fri Oct 10 17:21:53 PDT 2014 ev@lists.evdl.org<mailto:ev@lists.evdl.org> said: >Hello Cor, > >This company recommended for me to parallel three modules together which has two parallel cells per module. This is a total of six cells at 33.1 ah per cell in parallel for a total of 198 ampere hour. > >The six parallel cells or the same as three modules are series together for 54 modules groups which gives me 226 volts maximum. This becomes 226V x 198ah = >44.748kwr with a EV weight of 5600 lbs instead of the US Battery 180V x 250ah = >45 kwr with a EV weight of 7100 lbs. 54 Module Groups in series is more like 452V. I use a pack of 3x40 for my F250, and have the charger set to stop at 328V. Pack is approx 180AH. -- Bobcats and Cougars, oh my! http://john.casadelgato.com/Pets<http://john.casadelgato.com/Pets> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141010/8bec8d82/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
