Do those SSRs require a separate 12V supply of power, or are they activated directly through the leads from the BMS?
Source for Relays for BMS8T
- Thread starter kevfab
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Do those SSRs require a separate 12V supply of power, or are they activated directly through the leads from the BMS?
onemorebattery
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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:
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
For two contactors run 12v+ through NO1/COM1 and NO2/COM2 separately to each coil+.
The parts:
Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V: Office Products
Buy HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V: Relays - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
TE Connectivity Kilovac EV200AAANA Contactor 500A 12~24VDC Coil USA Shipper. | eBay
Find many great new & used options and get the best deals for TE Connectivity Kilovac EV200AAANA Contactor 500A 12~24VDC Coil USA Shipper. at the best online prices at eBay! Free shipping for many products!
www.ebay.com
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
For two contactors run 12v+ through NO1/COM1 and NO2/COM2 separately to each coil+.
The SSRs I used are activated directly from the Chargery Charge and Discharge cutoff leads at 12V. I wired their outputs up in series with the TE Contactor coil across my 24 V bus. I didn't use the optocouplers for my setup because I didn't know if they could handle 24V.
I bought a couple of the TE Connectivity / Kilovac EV200P4ANA contactors
This is a latching version. I am wondering how I should use them with my BMS8T, do I need to use a relay board, or octocoupler?
This is a latching version. I am wondering how I should use them with my BMS8T, do I need to use a relay board, or octocoupler?
The relay I'm using is the EV200AAANA, which is a normally open (NO) relay and only closes the main contactor when the coils are energized. If, for whatever reason, the BMS drops the voltage to the coil the relay main contactor opens. The Chargery BMS can directly feed the coil of a NO relay at 12V if it does not draw more than 2.5A total. However, if you are planning to use latching relays you will need a logic board that takes the 12V output from the Chargery and converts it to a latching pulse signal that your relay can use.
onemorebattery
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If this does what I think it does (not entirely sure) you could remove the relays on this board and run yours instead. What I think it does is convert high trigger to the pulses needed for the latching relays that are on the module.
Amazon.com: KNACRO DC 12V 10A 2-Channel Self-Latching Relay Module One-Button Bistable Switch One-Button Start/Stop High-Level Trigger : Electronics
Buy KNACRO DC 12V 10A 2-Channel Self-Latching Relay Module One-Button Bistable Switch One-Button Start/Stop High-Level Trigger: Power Converters - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
I am tempted to try the SSR's you are using. Do you think they would work with the latching version of the TE contactor?
No, the SSRs that I used would not work with your latching relay without some kind of driver circuit to convert the continuous 12/24v signal to a pulse signal. The SSRs I'm using work with my EV200AAANA relay because it is a normally open relay that only closes when the coil is continuously energized at 12/24V. I think onemorebattery posted a link above for a self latching relay module that looks like it would work using the Chargery inputs to create a pulse to trigger your latching relay. See his post at 6:21 PM earlier today.
Thanks, looks like the onemorebattery it is.
i just bought the pcb board. will that work if i hook them up?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:
Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V: Office Products
Buy HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V: Relays - Amazon.com ✓ FREE DELIVERY possible on eligible purchaseswww.amazon.com
TE Connectivity Kilovac EV200AAANA Contactor 500A 12~24VDC Coil USA Shipper. | eBay
Find many great new & used options and get the best deals for TE Connectivity Kilovac EV200AAANA Contactor 500A 12~24VDC Coil USA Shipper. at the best online prices at eBay! Free shipping for many products!www.ebay.com
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+.
i tried.. didn't work..nothing happen..i double check too.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:
Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V: Office Products
Buy HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V: Relays - Amazon.com ✓ FREE DELIVERY possible on eligible purchaseswww.amazon.com
TE Connectivity Kilovac EV200AAANA Contactor 500A 12~24VDC Coil USA Shipper. | eBay
Find many great new & used options and get the best deals for TE Connectivity Kilovac EV200AAANA Contactor 500A 12~24VDC Coil USA Shipper. at the best online prices at eBay! Free shipping for many products!www.ebay.com
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+.
onemorebattery
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What are the steps you took to double check and what were your observations and measurements?
Attachments
onemorebattery
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I don't see any wiring errors but your power sources are not shown. There are two red leds and one green led (near IN2) on the module. If the green led is not lit then the module does not have power. Check your grounding. You should have zero volts between DC- and COIL-. If you have the Chargery connected to one supply (a battery) and the module connected to another (a different battery or power supply) without a common ground the module will have no power.
two black wire connected to 12v battery. also connected to the bms.
onemorebattery
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If you have a BMS8T it needs 24 volts. Are you waiting for batteries from China?
that what i have. BYD battery pack. i don't understand why i need 24v
found out the discharge no power.
onemorebattery
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Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
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 "
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 "
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