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Can you wire BMS in parallel for a higher discharge amp  

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EmpireofKings
(@empireofkings)
Street cred = 10 mAh
Joined:10 months  ago
Posts: 2
05/06/2018 3:28 pm  

Hello,

I have a 4s 13p 18650 battery pack. The cells are sony vtc4, and i am using the vruzend v2 kit. The pack is being built for a hexacopter we are building. According to my calculations the hexacopter will need approximately 500amps continuously at full throttle. Problem is, I only managed to find some 4s 100amp BMS. Is it possible i could wire Six of those BMS in parallel to allow a 600amp max continous discharge from the battery pack ? If not, whats the recommendation from the community ? My university professors havent been much help. So any advice will be greatly appreciated.  


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Micah (Vruzend Rep)
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Posts: 465
29/06/2018 8:47 pm  

Yes, that is possible. BMSs can be used in parallel, just usually not in series for higher voltages.


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MattyLada
(@mattylada)
New Member
Joined:9 months  ago
Posts: 1
04/07/2018 12:16 pm  

Hi..i am a new user here.In my case, this happens because my battery pack can only deliver a continuous 30A for a 12 mile ride. I can set the max to 200A and draw up to 105A, but only for a very short trip. My battery (specifically the cell capacity) is the weak link in my system.My next battery will be a higher capacity (Ah) battery with higher capacity (e.g. 3000mA) cells, but I will still use two 36V batteries in series.


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rdhoke
(@rdhoke)
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Joined:9 months  ago
Posts: 1
11/07/2018 1:26 am  

18650s are not that great at High amp output in quick bursts. That is the reason that all commercial quads copters use Lithiom polymer. I know they are more expensive but you would probably be better to look into LiPoly for your quad. 


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Daniel Miksa
(@danmixanet-com)
Street cred = 10 mAh
Joined:1 year  ago
Posts: 2
17/02/2019 11:14 am  

Got any videos or wiring diagrams on how to wire in parallel ?


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Micah (Vruzend Rep)
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Daniel Miksa
(@danmixanet-com)
Street cred = 10 mAh
Joined:1 year  ago
Posts: 2
24/02/2019 8:15 pm  

Thanks.  I was actually looking for how to wire bms  in parallel.  Got and tutorials on that?  Or advice?

 

Thanks


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Micah (Vruzend Rep)
(@admin)
Street cred = 5 Ah Admin
Joined:2 years  ago
Posts: 465
25/02/2019 9:18 am  

Ah sorry, I thought you meant the cells. For the BMS, you just duplicate the connections. So you install the second BMS as if the first wasn't even there.


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