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Unread 01-07-2019, 04:47 PM   #11
Not Yet Wild
E-Z-GO
 
Join Date: Feb 2018
Location: NY Capital Region
Posts: 7
Default Re: Lifepo4 Pack Specificatons

Quote:
Originally Posted by BobBoyce View Post
I prefer a LVCO alarm, so it warns the driver to get out of traffic and head for a safe location. You could set up a low voltage alarm that will sound off before the pack reaches the BMS LVCO setpoint. Solves your concern.

I bought a new factory E-Z-GO 12V converter for $25 from a seller on eBay. Just keep doing searches from time to time. I had no harness or connector for it at the time, so I bought the harness from the E-Z-GO site afterwards.

Bob
Hi Bob, thanks for the info on the RXV converter. I'll keep checking ebay for deals. Where can I find out more about how to create that LVCO alarm you designed? Do you have a write up somewhere I can reference?

thanks,
Myles
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Unread 01-07-2019, 06:10 PM   #12
Gone Insane
E-Z-GO
 
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,081
Default Re: Lifepo4 Pack Specificatons

Quote:
Originally Posted by cramermy View Post
Hi Bob, thanks for the info on the RXV converter. I'll keep checking ebay for deals. Where can I find out more about how to create that LVCO alarm you designed? Do you have a write up somewhere I can reference?

thanks,
Myles
It is very simple. My interlock contacts are connected this way...

Com is connected to battery pack +.

NC is connected to the + side of an RXV reverse buzzer.

NO is connected to the keyswitch +48V input.

The - side of the RXV reverse buzzer connects to battery pack -

When the reset/override switch is on, the buzzer sounds and you drive to a safe location to recharge. This is how I operate my RXV. My RXVs reverse buzzer is disabled in the controller configuration.

When the reset/override switch is off, the buzzer sounds and the cart stops.

You can flip the reset/override switch on to drive to a safe location to charge.

If you wire the interlock to the throttle pedal, it cannot be interfaced with the buzzer the way I did it.

Bob
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Unread 01-07-2019, 06:37 PM   #13
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Posts: 7
Default Re: Lifepo4 Pack Specificatons

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Unread 02-27-2019, 08:01 AM   #14
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Join Date: Feb 2018
Location: NY Capital Region
Posts: 7
Default Re: Lifepo4 Pack Specificatons

Hi Guys, I have revised specs and a BMS design drawing that i'd love you to comment on. As far as i can tell with my limited experience in the electrical world the spec and BMS looks ok.

But you guys are clearly the experts so any advice/comments are much appreciated. I added the specs and BMS drawing as "attached pictures" so hopefully you can see the details clearly when you open them.
Attached Images
File Type: jpg 48v 150Ah spec page 4.JPG (105.9 KB, 0 views)
File Type: jpg 48v 150Ah spec page 5.JPG (85.4 KB, 0 views)
File Type: jpg 48v 150Ah spec page 9.JPG (87.1 KB, 0 views)
File Type: jpg BMS Drawing.JPG (81.4 KB, 0 views)
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