[maestro7879]

I'm working with a Miles ZX40s.

The configuration will be -
10 Nissan Leaf modules (car is a 72v system)
Curtis 1209B controller.

The car will be stock other than the batteries.
What size BMS would I need for this system ?
I'm thinking 450 at least because that's what the controller can pull.

Thanks

Looking at this again. Based on the motor XQ-6.3-6H http://czhsdj.com/english/upload/product/201711915302930.pdf this would be max 105amps ?
Am I reading that right ? What's the max size BMS I would need (in the neighborhood of 150amps) ?

 

[maestro7879]

Is it possible to estimate the discharge amps without running the vehicle first ?

I think I answered my own question - The primary fuse in the car is 300amps, I can't exceed that.

 

[maestro7879]

Is it possible to estimate the discharge amps without running the vehicle first ?

I think I answered my own question - The primary fuse in the car is 300amps, I can't exceed that.

I'm using Volt modules and a Volt main fuse - I believe it is about 330 amps

However my controller is set to 1200 amps and my battery current reaches that value as I accelerate

So far I have nor blown the "Main Fuse"

Tesla use a pyrotechnic main fuse that can blow immediately you exceed that current but the wire type main fuses will take quite a while (seconds) to blow even with a 400% overload

Are you using a bms on the discharge side ?

 

[maestro7879]

Would this bms work and support the discharge side ? https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/192702426670

 

[maestro7879]

It's all good.

ZEVA can communicate with several chargers via canbus or by triggering an enable relay. I even used a TC charger and ZEVA was able to set the charge parameters over canbus.

The type of BMS that the OP is referring to actually pushes all power through the BMS, hence his question of how large he should go. I don t see any reason to use a BMS like that in this application, even if they have one that is robust enough for it.

Sent from my SM-N960U using Tapatalk

I'm partially interested in having a speedo and odemeter. I don't have one currently and the law requires it.
I'm also interested in having something that shows the amps.
This all in one solution is nice and I can mount it in the dash.

If I were to bypass the discharging portion of this BMS I'm guessing I would lose the amps function.