Signalab (ping) BMS install

[calarco68]

Guys could you help me out on the install for a Signalab BMS. I provided a photo with contact points.
So + 1 2 3 4 5 6 7 9 10 11 12 13 14 -. Volt meter all my small wires from my battery and connect them from low volts all the way up. Left to right? are the red and black connected this way with the white? So what wires go to B-, C-, P-? Thanks. I finished my first EBike! The client loves it. So thank you all for your help on my 1st EBike!
ChrisView attachment BMS.jpg

 

[dnmun]

not sure where you came up with the numbering. the leftmost wire goes to the top of the top cell. for a 16S or 48V pack that should be called #16.

c- is the negative charger lead.

P- is power negative to the controller

B- goes to the negative terminal of the pack. bottom of#1.

 

[calarco68]

Ok. Need a little help on the 16 - 1 wires. None of the wires from the cells are marked. the battery is a 48volt 20amp hr. made up of yellow cells and spot welded. Would a picture of the battery help? View attachment BMS2.jpg

 

[999zip999]

What kind of pack ? Yes pic. please.

 

[dnmun]

nope, you gotta figure that out yourself. the left most wire #16 goes to the top of the 16th cell, #1 goes to the top of #1 cell, could not be simpler.

 

[999zip999]

Calaco68, Did ping give you shink wrap for you bms the big clear one goes on first and heated then the blue on the end away from the lights and I wish I put the wires under the blue with the way I wanted the wires to go. I put the blue on frist next to the shunts and on the fets will it go to groop on top of the shunts ? To hot for shrink wrap ?

 

[calarco68]

Ok. I will figure out the 16 cell - 1 cell. But I need one clue. Can I meter each cell? So cell 16 is 52 volts and cell 1 would be 3.4 volts?
Thanks

 

[dnmun]

yes, connect all the sense wires to the cells before you connect the plug to the BMS. then measure the voltage at the plug on each pin to be certain they are in order from low to high. the B- connection will be needed to show the voltage on cell #1. and you put the black pin of the voltmeter on the solder pad where the shunts end up to measure #1.

 

[999zip999]

Calarco68,If you hang the 16 pin in the air above the pack it is easier to keep the wires untangle like the center of the parachute with air in it. The signalab bms does get warm so find a place for it.

 

[calarco68]

Ok. I have crimped the 15 wires from the battery to BMS. The BMS Black wire is free. I do not want to blow-up this BMS so please help. What do you mean in this statement about bottom of #1? " B- goes to the negative terminal of the pack. bottom of#1." The black BMS wire will go to B- and so will the 12 gauge black wire from the pack?
So my pack has 15 white wires and 2 12 gauge red and black. Black to B- and red pigtailed. One to charger XLR connector and one to Anderson connector for controller? The positive lead is my only concern. is that the correct way? Or should the positive charger lead go to somewhere else on the pack?
Thank you so much for helping me with my BMS.

 

[999zip999]

Calarco, My ping on pos. end of pack has pos. wire to controller, charging wire , and # 16 bms little red wire all on the last pos.on pack .. the ned. end of pack has one wire the neg. to the bms the little black bms wire starts on other side of that cell. Dnmun was saying to check all the cells for 3.6v ( more or less ) you must check between neg. out wire and to the bms little black wire on the bms for your cell by cell volt check, O.K. If you start at the pos. end of pack you will run out of 16 bms wires one short of the end of pack or the neg. end neg. wire out of pack. So start at the Pos. end to see. It just takes time. GOOD LUCK. Please all the question now.

 

[calarco68]

Red and black sense wires are complicating for me. they just go to cells? I only have 15 white sense wires from pack. SO wire #1 black should go where? Thanks!

 

[DAND214]

As 999ZIP999 says, start at the positive side of the pack the red sense wire #16 goes to the pos output lead. Work your way to the negative end of the pack doing each side of each cell. The last wire is black sense #1 which will go to the plus side of the last cell. That is the confusing part of the sense wires. So on the negative side of the battery you will have only the HEAVY wre to the BMS and on the other side of the same cell the THIN black sense wire goes to the positive of the cell.
So start at positive and work to the negative being short one sense wire at the end. DO NOT connect the harness to the BMS till to check all leads for 3.? per cell. As dnmun said you will need to test between the heavy neg wire to the #16 sense wire to get a reading.
Dan

 

[999zip999]

Can we have a pic. of your battery. You have the # right on your bms pic. start with # 16 red sense wire on your chart to the pos. end. of your batt. same as the charge wire and big red wire all on the red pos. end. Start. IF you don't get it ask it's a head twist. So don't worry..

 

[calarco68]

Thanks guys.

 

[pgt400]

Wow...did you pre-balance the parallel strings? If not the BMS may take a while to balance. I've used this BMS for about 9 months, has performed very well.

 

[calarco68]

installed BMS. only 3 lights. Do I deplete those cells that are lit and recharge the pack? or is this battery a waste of time?

 

[999zip999]

Calarrco88, Be cafeful they say it's o.k. to balance with the 16 wire connection to the bms. I would only play with the battery with the 16 pin disconnected and discharge the high cells with a 12v tail blub from the battery cell pads to macth the other cells and then plug in the 16 pin bms connection. Then connect the charger and then plug into the wall. repeat if need it. But I'm very new to this and is new to me. Good luck maybe we can find out ?

 

[999zip999]

Sorry If this the frist time you have charged the pack since you installed the bms ? That cell group at 3.8v was full and shut off the charging to fil up the other string of lower voltage cell discharge the high string. Do check the voltage of each string to write drown this is good the led will light at 3.6v per cell at the time of 3.6v per cell I think ? ? ? I have melted many a bms so this is a time for the FORUM to work....Thanks

 

[el_walto]

If you leave it on the charger, i don't see why the BMS wouldnt balance the cells and turn all the LEDs on. Just watch it and make sure it does not get super hot if the cells are way out of balance.

 

[999zip999]

Yes that's right. If not to out of balance. How hot the charger what Volts ? Small fan on bms ? Are cell close (first ) what frist. then what ? Check. It looks good so far. these are strong cells. becareful

 

[calarco68]

Now have 6 lights lit up. going to have the wife place a fan next to the bms. Thanks for the help. I'll check everything when i get home from work

 

[999zip999]

The bms was made to self balance with time. The best way to know is to check each cell voltage and let us know the voltages.

 

[calarco68]

cells 1-14 are in this range. + or - 3.63.View attachment 3
Notice cell 14 crimp was bad. meter readView attachment 2

So I think all is good? Nothing hot. Just have a issue with a few spot welds. I guess a little solder should do the trick. any specific type of solder? Thank you guyss.

 

[dnmun]

nope, that's bad, really bad. they should all be 3.63V+/-