01-18-2020, 08:52 AM | #11 |
Getting Wild
Join Date: Jan 2020
Location: Indiana
Posts: 139
|
Re: Ant BMS
I understand. That is why I started the thread. Can it be added with this BMS?
Sent from my iPhone using Tapatalk |
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 |
|
01-18-2020, 09:15 AM | #12 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
|
Re: Ant BMS
Yes it can be added to all of those cheap FET type BMS.
I will try to start my thread later and post what I did based on tests I did on the charger. |
01-18-2020, 09:18 AM | #13 |
Getting Wild
Join Date: Jan 2020
Location: Indiana
Posts: 139
|
Re: Ant BMS
Thanks Sergio!
Sent from my iPhone using Tapatalk |
01-27-2020, 02:25 PM | #14 | |
Getting Wild
Join Date: Jan 2020
Location: Indiana
Posts: 139
|
Re: Ant BMS
Quote:
I have yet to receive the BMS, But my pack is basically ready! Here is what I have: |
|
01-27-2020, 02:40 PM | #15 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
|
Re: Ant BMS
The idea is not to pass high current and generate heat on those cheap BMS FETs.
If You look at my drawing again (Thread Link), the BMS negative connection (C-) is only used to provide the negative to control the relay coil(s), which is around 0.02A so any size BMS would work (I used a 20 amp model). If any cell goes into a LV or HV condition, the BMS will shutdown C- which would deactivate the charger relay and the KSI relay, whichever was active at the time. |
01-27-2020, 04:36 PM | #16 | |
Getting Wild
Join Date: Jan 2020
Location: Indiana
Posts: 139
|
Re: Ant BMS
Quote:
The BMS is 300a with a built in shunt at the B- connection |
|
01-27-2020, 05:15 PM | #17 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
|
Re: Ant BMS
Those BMS like you have are originally designed to have the entire charge/discharge current going through them.
That is also how they measure current and calculate SOC. If You intend to use the BMS as it was designed, then follow all of their guidelines which includes connecting the Controller and charger to C-. Make sure the BMS enclosure has adequate heat dissipation and removal as that BMS will get hot at higher currents (more than 100 amps). My design uses external relays for LV and HV so the controller B- connects directly to the pack. Just pick one design or the other but be careful trying to come up with a mixed version. |
01-27-2020, 05:45 PM | #18 | |
Getting Wild
Join Date: Jan 2020
Location: Indiana
Posts: 139
|
Re: Ant BMS
Quote:
I’m not trying to do any hybrid. Just trying to clarify my understanding. Only the controller needs to bypass. Right? Sent from my iPhone using Tapatalk |
|
01-27-2020, 06:11 PM | #19 |
Getting Wild
Join Date: Jan 2020
Location: Indiana
Posts: 139
|
Re: Ant BMS
I like the idea of not taking all that current through the bms. It looks a bit flimsy in the pictures. With that being said, it appears that I over spent buying the 300 amp version.
Sent from my iPhone using Tapatalk |
01-28-2020, 03:35 AM | #20 | |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
|
Re: Ant BMS
Quote:
When your package(s) arrive from China, you may want to spray down the exterior and then the contents with 91% alcohol spray... The coronovirus infection there is more infectious and more widespread (2.8 million infected out of 49 million quarantined as of 01/24/20) than is being reported in the media. I am prohibited from full public disclosure of the details, but I suggest that you protect yourself and your family with this simple precaution. The 91% alcohol, and the 6 oz Equate version of Chloroseptic (dump out and rinse bottle, sprayer has been tested to withstand 91% alcohol) can be used as an inexpensive sterilization solution that you can buy from WalMart in the pharmacy section. |
|