onemorebattery what a fantastic thread I started to read all your post to learn as much as i can.
onemorebattery what a fantastic thread I started to read all your post to learn as much as i can.
please help with the following I plan on setting two 16s bank then parallel them to make a 400ah lifepo battery.
my issue has been the contactor/relay I bought 4 now how do I connect it for 48 volts do I need a step down voltage from 48 to 12 volts?
do I need 4 for the 2 banks ? one for the charge one for the discharge? sorry lots of questions
thank you for the quick reply I looked for the pcb you had in your post I saw a four channel one i put in in my basket for now.
the BMS I was leaning at the chargery I posted a message for a few questions no reply yet, the question was in the manual I saw two of them in series
I'm clear on the 48 volts step down I have one in my basket i already have 4 of those I'm really leaning toward the Batrium bms blockmon with 32 cel monitor, I would like to save the money in go for the chargery, but i need to be clear.
one last question you mentioned (one or two relays and one relay module per BMS. ) i'm confuse please clarify
It is possible to not need relays with the Chargery dependingg on your SCC and inverter what are your planned componentsthank you for the quick reply I looked for the pcb you had in your post I saw a four channel one i put in in my basket for now.
the BMS I was leaning at the chargery I posted a message for a few questions no reply yet, the question was in the manual I saw two of them in series
I'm clear on the 48 volts step down I have one in my basket i already have 4 of those I'm really leaning toward the Batrium bms blockmon with 32 cel monitor, I would like to save the money in go for the chargery, but i need to be clear.
one last question you mentioned (one or two relays and one relay module per BMS. ) i'm confuse please clarify
sorry to bother you i'm plague with the vusual bug, do you have a similar layout for the 2 contactor approach as above?So far the best combination I've found for a Chargery relay setup is these two gismos. Everything you need to run one contactor for common port (by wiring the relay controller NO contacts in series to one relay) or two contactors. Plus you get an extra controller for cooling fans or whatever. Lowest operating current and the coolest running of everything I have tested. Probably my final setup.
The parts:
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TE Connectivity Kilovac EV200AAANA Contactor 500A 12~24VDC Coil USA Shipper. | eBay
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I bought two of the contactors and they looked new. I run the relay module because in some cases current energizing two contactors causes the Chargery to reboot.
The hold current for the entire setup is 157 mA. Runs cool (barely warm) tested to 100 amps.
Since the module does the switching logic for both Chargery relay outputs common charge/discharge setups can use just one contactor for both charge/discharge and temperature protection cases.
I wired the Chargery relay wires to the high triggers and common and brought 12 v in from my stepdown to power the controller and the contactor coil.
Diagram for common port single relay
View attachment 13830
For two contactors run 12v+ through NO1/COM1 and NO2/COM2 separately to each coil+.
Just seeing if you have an update on testing of these relay?POSTING UPDATE from ( page-3#post-67469 ) reference to Dongya Relays.
That post mentions the DH200 series which is the incorrect one for this type of application. I ordered & received two, to only realize that I made a mistake and that these were Uni-directional and not energy savers, although lower power consumption that the Electro-Mechanical Contactors as used with the Chargery BMS'. I have since ordered two DHV200AAANH relays to test within my production setup. They are expected to arrive June 2nd and will likely be in operation by June 8th.
The correct Relay information is as follows, with attached info sheet & image.
The DHV200AAANH is non-polarized, bi-directional, energy saver type:
V stands for non-polarized
200 stands for rated current 200A
The first A: main contact normally open (stud type)
The second A: coil voltage 9V-36V
The third A stands for coil wire length is 390mm
N stands for not with coil terminal connector
H stands for install method is Horizontal
Website & Ordering information here: https://en.cndongya.com/ or Https://www.dc-contactors.com
IMPORTANT NOTE READ THIS ! :
These are not shown on the website and this company does not typically sell small orders. Sample orders can be done.
Because these are not normally stocked, there is lead time for assembly but they can also be made in 200, to 500 + Amp models as well. Priced accordingly of course.
You will have to use their Contact Page and request a quote for the specific relay. See the attached Specifications document which breaks down the details. Be VERY CLEAR to State " non-polarized, bi-directional, energy saver type "
View attachment 14325