JK-PB2A16S-20P wiring diagrams

[sd_dracula]

I just picked up this BMS but cannot find any proper user guides/diagrams for it just yet, I suppose it is quite new.
Will be building a 16s2p battery with it when the cells arrive.
Just wondering on the wiring of the balance cables if there is a diagram for it to ensure I am connecting correctly.
It has 4 sets of cables labelled 1 to 4, cable 1 has 2 black wires (thermistor) and 5 red cables, cables 2-4 have the 2 black wires and 4 red cables.
I think I can just about make sense of it but I'd like to be 100%



B0 would be the main battery negative and then the rest B1-B16 are all the cell positives?

 

[RikvW]

B0 means connecting to the Cell 1 negative, see below link of JK website:

JK PB1A16S20P JK-PB1A16S-20P - JK BMS

Specification Confirmation Form Customer Name: Customer No.: Customer Part No.: Product Model JK-PB1A16S-20P Version V14.0 Date Accessory List No. Name Model Qty 1 BMS Board JK-PB1A16S-20P 1 2 Display Screen LCD-3.2-RS485-V1.0 1 3...

www.jkbms.com

 

[hogback]

Yes, and you'll notice the second B8 written on the bms shell does not connect to any wire on the balance lead harness.

 

[D. Abineri]

I just picked up this BMS but cannot find any proper user guides/diagrams for it just yet, I suppose it is quite new.
Will be building a 16s2p battery with it when the cells arrive.
Just wondering on the wiring of the balance cables if there is a diagram for it to ensure I am connecting correctly.
It has 4 sets of cables labelled 1 to 4, cable 1 has 2 black wires (thermistor) and 5 red cables, cables 2-4 have the 2 black wires and 4 red cables.
I think I can just about make sense of it but I'd like to be 100%

View attachment 182465

B0 would be the main battery negative and then the rest B1-B16 are all the cell positives?

But notice that there are 2 B8 connections. Use the plug with the NC (no connection) on the 3r socket from the right since B8 is wired from the second plug. This will then give you a B0 connection on the first plug with all its wires populated.

 

[lukM]

I'm not a clear ... Do I need cut off this black end and connected to first - cell ? Looks to me like a temp sensor .. pleas help

 

[Martijn]

That black duo wire with the clump at the end is the temp sensor.

 

[lukM]

That means I need connect only this red wire to + positive cell 1-16 ... Thank you for your response

 

[Martijn]

First red wire B0 goes to cell 1 negative, second red wire B1 goes to cell 1 positive.

 

[aci247]

Hello all.....
I have the same issue with that b8...
Is like only 1 of the b8 need to connect .....been the first counting from b0

 

[Steve_S]

 

[AshleyL]

Hello all.....
I have the same issue with that b8...
Is like only 1 of the b8 need to connect .....been the first counting from b0

Yes, connect only one of the B8, not both, otherwise you will blow the tiny fuse.

 

[SummitHome]

I have two of the 200Amp versions with 2A active balancer, without the screen. And both came with a small cable that has 5 green wires terminating in a terminal, a red wire and a black wire. Any ideas on what it's for??

 

[kommando]

I have two of the 200Amp versions with 2A active balancer, without the screen. And both came with a small cable that has 5 green wires terminating in a terminal, a red wire and a black wire. Any ideas on what it's for??
View attachment 229408

This is for the as yet unsupported heater function, stick it in the box until JK get their act together and add the functionality, if they ever do.

 

[HRTKD]

JK has a table in their JK PB2A16S20P page that details where each wires goes. It is slightly wrong as it left out the wires/pins for NT4 and mislabeled NT3 as NTC3. Both are minor issues, but show a lack of detail.

To add some clarity (mostly for myself as I'm getting ready to wire mine up) I stole the image from post #1 of this thread and labeled the four connectors. I then took JK's table, correcting it and adding some formatting that might be helpful for first time users. The pins listed in the table also follow the order shown in the image directly below.






JK's wiring connection order is a bit confusing.

The protection board has strict power-on sequence requirements. Connect in order from low to high: B-, P-, B+, P+. After powering up, press button to activate. Connect all wires before connecting load or charger. To disconnect, first remove load and charger. Then disconnect cell sampling connectors in order from high to low, and finally remove B+, P+, B-, and P-.

The "connect" part left out the "cell sampling connectors". When they said "Connect all wires" they meant "Connect all sampling wires"? Since the disconnect process has the cell sampling connectors come out after the load/charge is removed and before all other connectors, I'm assuming that the order should be like this:

Connecting
B-
P-
B+
P+
Cell Sampling Connectors (4, 3, 2, 1?)
Load/Charge

Disconnect is the opposite order of connecting.

 

[AnthonyEvs]

Thank you for that better wiring diagram.
I have a 14s bank, so do i connect cell 16+ to cell 14+ like in other jk bms set ups and leave cell 15 wire not connected?
Thank you.
Anthony

 

[Spunky]

My connector 3, had lead B9 in the B8 pin hole. And that made the numbering off and allowed for a lead B17
I pulled the leads B9 through B17 from connectors 3 and 4, then moved them to their correct postions and tossed lead B17.
That will leave pin 3 in connector 3 empty as pictured.

 

[HRTKD]

Thank you for that better wiring diagram.
I have a 14s bank, so do i connect cell 16+ to cell 14+ like in other jk bms set ups and leave cell 15 wire not connected?
Thank you.
Anthony

I don't know the answer. If you don't get a response in 24 hours, start a new thread.

 

[AnthonyEvs]

I don't know the answer. If you don't get a response in 24 hours, start a new thread.

ok, will do, thanks.

 

[AnthonyEvs]

My connector 3, had lead B9 in the B8 pin hole. And that made the numbering off and allowed for a lead B17
I pulled the leads B9 through B17 from connectors 3 and 4, then moved them to their correct postions and tossed lead B17.
That will leave pin 3 in connector 3 empty as pictured.
View attachment 238306

my connector 3 had fully populated 5 red wires. On the print on the bms case it says 1st red pin B8, same as end pin on connector 2, but jk wiring diagram shows connector 3 1st red wire as NC not connected. So, ive not connected it. I now need to know what to do with B15 qnd B16 wires as I have a 14s battery and have nowhere to connect B15 and B16. On smaller jk ebike bms systems B16 wire gets connected with the B14 wire to indicate to the bms that b14 is the last battery, buy cant find that info from the jk tech information or wiring diagrams for this inverter type of bms.

 

[AnthonyEvs]

To update on my question.
If you have a 13, 14, or 15s battery, all you do is connect the battery + wires for as many as you have, so in my case a 14s battery, so connected c14+ cables to the bms and left 15 and 16 unconnected. You then connect the seperate +ve cable from c14+ to the battery +ve terminal on the bms.
Thanks.

 

[ArthurEld]

To update on my question.
If you have a 13, 14, or 15s battery, all you do is connect the battery + wires for as many as you have, so in my case a 14s battery, so connected c14+ cables to the bms and left 15 and 16 unconnected.

I think that is the case. That's how it works for 8s and 16s.

You then connect the seperate +ve cable from c14+ to the battery +ve terminal on the bms.
Thanks.

I don't know what this means

 

[ArthurEld]

my connector 3 had fully populated 5 red wires. On the print on the bms case it says 1st red pin B8, same as end pin on connector 2, but jk wiring diagram shows connector 3 1st red wire as NC not connected. So, ive not connected it. I now need to know what to do with B15 qnd B16 wires as I have a 14s battery and have nowhere to connect B15 and B16. On smaller jk ebike bms systems B16 wire gets connected with the B14 wire to indicate to the bms that b14 is the last battery, buy cant find that info from the jk tech information or wiring diagrams for this inverter type of bms.

I didn't use the B8 from connector #3. It worked for me.
B15 and B16 will be left disconnected
Connector #1 B0 is the wire that goes to cell #1 negative.

 

[AnthonyEvs]

I think that is the case. That's how it works for 8s and 16s.

I don't know what this means

there is a seperate "orange" cable that gets connected to the last cell +ve to the B+ terminal on the pcb.

 

[dominique44650]

I have a question regarding this BMS, it comes with a small communication card including different connectors and also communicates via Bluetooth via a smartphone.

For my application: Bluetooth communication is enough for me.

question: does it work normally without connecting the additional card?

taking into account that you can connect the start push button or an LCD to a connector on the main board

for the adjustments, they would be made with bluetooh.

THANKS

 

[kommando]

You need the comms card as that is the only method for updating firmware. As the firmware is being changed on a regular basis to fix errors the comms card is needed.