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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Sun Feb 11, 2018 2:42 pm 
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Joined: Mon May 19, 2014 4:49 am
Posts: 567
Location: Ithaca, NY
The seller only has one for sale. So I found the part number and searched for that. FBA-12G12H1BX

Found a few more that were significantly cheaper!
https://www.ebay.com/sch/i.html?_from=R ... BX&_sop=15

Update:
I purchased 2 of these fans. Thanks!
https://www.ebay.com/itm/NMB120mm-FBA12G12H-1BX-103-8CFM-High-Speed-PC-Computer-Case-Fan/152851380588?hash=item2396a6f96c:g:s~sAAOSwjyhaTFZI&autorefresh=true
Seller accepted my offer of $20 for 2.

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2014 Rav EV #3364
2012 Plug in Prius

OpenEVSE builds
priuschat.com/threads/my-openevse-build.115573/#post-1647089
Dual voltage, portable 40amp Openevse
myrav4ev.com/forum/viewtopic.php?f=9&t=1013&start=120


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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Sun Feb 11, 2018 5:34 pm 
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Posts: 565
jimbo69ny wrote:
Ive heard that it is better to have them suck air out than push it in. You think that is true? I wanted to have them blow in so I could put a heater in front of them at some point.
More important to have good baffling to get the air to move across all cells. May need some foam dividers etc to to build a path. Air across the top leaves most cooling to convection. With so much unknown consider a temperature sensor that you can move around.


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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Sun Feb 11, 2018 5:41 pm 
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Posts: 567
Location: Ithaca, NY
smkettner wrote:
jimbo69ny wrote:
Ive heard that it is better to have them suck air out than push it in. You think that is true? I wanted to have them blow in so I could put a heater in front of them at some point.
More important to have good baffling to get the air to move across all cells. May need some foam dividers etc to to build a path. Air across the top leaves most cooling to convection. With so much unknown consider a temperature sensor that you can move around.


The original plan for the box included baffles but I had to remove them in order to fit the 9th module. There wasn’t enough space.
I do have a temperature sensor/switch on its way. A link is in the first post under purchased items. I also plan to get an infrared temperature sensor at some point so I can watch for hot cells.

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2014 Rav EV #3364
2012 Plug in Prius

OpenEVSE builds
priuschat.com/threads/my-openevse-build.115573/#post-1647089
Dual voltage, portable 40amp Openevse
myrav4ev.com/forum/viewtopic.php?f=9&t=1013&start=120


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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Sun Feb 11, 2018 6:48 pm 
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Joined: Fri Apr 26, 2013 1:45 am
Posts: 84
It is better to pull air thru the box than pushing air in

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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Sun Feb 11, 2018 6:50 pm 
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Joined: Fri Apr 26, 2013 1:45 am
Posts: 84
You can also install an adjustable snap disc thermostat for inside the box so the fans come on and off automatically

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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Sun Feb 11, 2018 6:55 pm 
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Posts: 567
Location: Ithaca, NY
Philly RAV4 EV wrote:
It is better to pull air thru the box than pushing air in

Thank you for confirming. Ill install these fans so they pull air out.

Philly RAV4 EV wrote:
You can also install an adjustable snap disc thermostat for inside the box so the fans come on and off automatically

I'd have to google what a snap disk thermostat is but in my previous post I mentioned that I have a temperature switch on its way. So I do plan on using a thermostat and switch.

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2014 Rav EV #3364
2012 Plug in Prius

OpenEVSE builds
priuschat.com/threads/my-openevse-build.115573/#post-1647089
Dual voltage, portable 40amp Openevse
myrav4ev.com/forum/viewtopic.php?f=9&t=1013&start=120


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 Post subject: Re: Additional Battery Project - Possible Extra 32kwh
PostPosted: Sun Feb 11, 2018 7:46 pm 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 565
jimbo69ny wrote:
Image


The battery stacks can be the baffles. Build the nine stacks with empty slots alternating on each side or top to bottom etc. Then us foam to seal around the edges.


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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Wed Feb 28, 2018 7:50 pm 
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Joined: Mon May 19, 2014 4:49 am
Posts: 567
Location: Ithaca, NY
We had an unseasonably warm day here in NY so I took the opportunity to run the power wires.

Image

Image

Image

Image

Image

I picked up XLE EXRAD 2 gauge shielded wire rated at 255 amps. That should be enough because neither pack will see full amperage. The packs will be in parallel. I am connecting them to my Jdemo box contactors. I may have to upgrade Tony's 2 gauge wires that run from the Jdemo to the battery pack. I dont know what his cables are rated to but the EXRAD wires are the highest rated wires I have seen. Ill have to see what kind of amperages are there once its all done. I also ran a 8 gauge wire for 12v power.
http://evwest.com/support/Shielded_Battery-Irradiated_XLE.pdf

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2014 Rav EV #3364
2012 Plug in Prius

OpenEVSE builds
priuschat.com/threads/my-openevse-build.115573/#post-1647089
Dual voltage, portable 40amp Openevse
myrav4ev.com/forum/viewtopic.php?f=9&t=1013&start=120


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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Sun Mar 04, 2018 7:50 pm 
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Joined: Tue Dec 05, 2017 8:56 am
Posts: 3
Hmm, this looks interesting...

Will this battery work seamlessly with the RAV4 EV systems? By that I mean, will it charge up normally from J1772 or JdeMO?
If you get this working well, it could be something that can be sold as a kit or something. Maybe Tony Williams would be interested in carrying something like this at QuickChargePower, in addition to JdeMO, you could get a range extending battery.


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 Post subject: Re: Additional Battery Project - Possible Extra 40 kwh
PostPosted: Mon Mar 05, 2018 6:27 pm 
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Posts: 567
Location: Ithaca, NY
betatest3 wrote:
Hmm, this looks interesting...

Will this battery work seamlessly with the RAV4 EV systems? By that I mean, will it charge up normally from J1772 or JdeMO?
If you get this working well, it could be something that can be sold as a kit or something. Maybe Tony Williams would be interested in carrying something like this at QuickChargePower, in addition to JdeMO, you could get a range extending battery.

Yes, it should. My pack is going to run in parallel with the main pack so charging with j1772 will definitely charge both packs. I am not positive if Tony has any kwh limitations in his Jdemo programming but it should charge with jdemo too. If he does have some kind of limits in place I am assuming unplugging and restarting the process would continue charging.

Tony is also working on his own range extending pack. I think he wants to use Tesla Smart Fortwo packs but he hasn't told me anything about his plans.

I dont plan on offering this as a kit. I am posting my process on here so anyone can follow it and do it if they want to. I'm not looking to make a business of this or make any money on it.

_________________
2014 Rav EV #3364
2012 Plug in Prius

OpenEVSE builds
priuschat.com/threads/my-openevse-build.115573/#post-1647089
Dual voltage, portable 40amp Openevse
myrav4ev.com/forum/viewtopic.php?f=9&t=1013&start=120


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