01-16-2019, 10:36 PM | #1 |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
|
Basic Programmable BMS
I am just wondering if anybody else has used an inexpensive programmable BMS. Over the past year I have built 4 Leaf module based packs utilizing a BMS that can be programmed via a USB cable and has some Bluetooth functionality. I keep seeing what looks like overkill when it comes building the BMS.
|
Today | |
Sponsored Links
__________________
This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum |
|
01-17-2019, 04:48 AM | #2 | |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
|
Re: Basic Programmable BMS
Quote:
I used a preprogrammed simple 14 cell BMS PCB on my 7 Leaf module RXV conversion. I retained my Lead/Acid charger. I would be interested in a simple programmable BMS for my 2Five conversion that will use 16 of the 100 A/H GBS NiFePO4 cells. Bob |
|
01-17-2019, 11:44 AM | #3 |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
|
Re: Basic Programmable BMS
I read your install. Your configuration was even more advanced than what I normally do because you are cutting off the AC side of the charger. You have used relays for interlock and bypass.
I have the BMS cut off power on the DC side of the charger if any cell hits 4.2v, or the pack reaches 58.8. I purchase a new Li-on charger for less than $200 that is programmed to turn off about .5v shy of max voltage. So for a 14cell Leaf pack I have the charger cut off at 58.3. This gives me two different forms of protection from overcharging. My charger is the one that normally stops the charging, but the BMS can shut down charging as well if the charger does not do its job. |
01-17-2019, 12:15 PM | #4 | |
Gone Wild
Join Date: Aug 2008
Location: Leander TX
Posts: 166
|
Re: Basic Programmable BMS
W
Quote:
What BMS are you using if you don’t mind me asking? |
|
01-17-2019, 12:48 PM | #5 |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
|
Re: Basic Programmable BMS
Just google 14S smart bms. I used one like this: https://www.aliexpress.com/item/14S-...794186005.html
|
01-17-2019, 10:27 PM | #6 | |
Gone Wild
Join Date: Jul 2012
Location: Climax,NC
Posts: 268
|
Re: Basic Programmable BMS
Quote:
|
|
01-17-2019, 11:50 PM | #7 |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
|
Re: Basic Programmable BMS
It doesn't appear to have an HMI, or display/touch panel.
|
01-18-2019, 12:18 AM | #8 |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
|
Re: Basic Programmable BMS
You can view your cells, protection occurrences, and even modify some parameters.
I hardly ever connect to it, but its there for the occasional spot check of the cells. I use my in-dash ScottyB voltage meter to view my pack voltage to get a sense of when to charge. |
01-18-2019, 12:30 AM | #9 |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
|
Re: Basic Programmable BMS
What is HMI?
Do I really need a display/touch panel? No, operationally it has no effect on the pack. Its not like I had a backlit display for my each of FLA batteries, so why would I need or want one for my Lithium modules? I spend around $120 per leaf module which is a similar price per FLA battery, so why would I over-complicate it with an elaborate battery management system that costs more than the whole battery pack itself? |
01-18-2019, 03:09 AM | #10 | |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
|
Re: Basic Programmable BMS
AN HMI is an industry term. Human Machine Interface.
http://bfy.tw/LDEp Quote:
|
|
|
|
Similar Threads | ||||
Thread | Forum | |||
Programmable controller | Electric Club Car | |||
Programmable Controllers | Electric Club Car | |||
Programmable vs Non Programmable Controler | Electric EZGO | |||
Programmable Controllers | Electric EZGO | |||
Question about programmable controllers | Extreme DC! |