Tesla Model S battery Module - 500 amps

[Anil]

Dear All,

I benefited a lot from what I read in this platform during the building the test rig.
I am working on improve the cooling of a Tesla battery with different fluids or nano particles. I have been using BMS from Overkill Solar for a my experiment studies initialy. As you know, OverkillSolar BMS can provide maximum 100amp and peak 240amp.

It is written in the datasheet that the Tesla battery module can reach up to 4C discharging rate. So it can provide max 664 amps.
It does not make sense to run it at such a high C rate for battery life, but since I am doing experiment for my university Final year project, I want to run tests at 0.5C, 1C, 1,5C 2C and 3C. (83, 166, 249, 332, 498 amp respectively)

I added the photo of the my initial system. I'm looking for a automotive BMS that can take this up to 700amp.
If I can find a BMS that can go 700amp, I will find the load accordingly and enlarge the system.
I will wait for suggestions from knowledgeable technical people like you. Unfortunately, university professors have only theoretical knowledge.
Which brand BMS can output 700/500 amp for single battery module.


Kind Regards.
Alan

 

[harrisonpatm]

Since you are using this for limited (non-continuous) testing purposes, this seems like a good application for contactor-controlled BMS. Take a read through this thread to see if that's something you're interested in trying, perhaps even with the equipment you have on hand already. Or JBD does make some models that are already built-in contactor-based BMSs, so you could go that route.

 

[harrisonpatm]

I sketched it on paper, hopefully this gives you an idea.

 

[Anil]

Thanks for your suggestion.. I'm trying to read what you say and learn.

Daly's 500A BMSs are available.
Do you recommend it for Tesla 74p6s?
I could not find any video Tesla battery with Daly BMS.

 

[harrisonpatm]

Some people use Daly, I haven't, but I have read from users that it does seem to have failures at a slightly higher rate than normal. Don't source me on that, it's just what I've read secondhand

 

[floydr]

It is written in the datasheet that the Tesla battery module can reach up to 4C discharging rate. So it can provide max 664 amps.
It does not make sense to run it at such a high C rate for battery life, but since I am doing experiment for my university Final year project, I want to run tests at 0.5C, 1C, 1,5C 2C and 3C. (83, 166, 249, 332, 498 amp respectively)

Which datasheet?
What model S Tesla module only has 166Ah? 70%SOH module?
How was the 166Ah figure calculated?

BMS-controlled contactor for high-amp discharge Change 28s to 6s, eliminate the dc to dc converter and and replace the 12V relay with a manual switch much clearer on the diagram in the above post The post from @harrisonpatm
Later floyd

 

[Anil]

Which datasheet?
What model S Tesla module only has 166Ah? 70%SOH module?
How was the 166Ah figure calculated?

BMS-controlled contactor for high-amp discharge Change 28s to 6s, eliminate the dc to dc converter and and replace the 12V relay with a manual switch much clearer on the diagram in the above post The post from @harrisonpatm
Later floyd

I got 166ah value from overkill BMS.

Tesla, the electric car company, claims to charge its Li-ion batteries at a rate of up to 4 C.

I'm trying to understand the Harrisonpatm system.

 

[gromike]

When the bms turns on it powers the coil in the relay, when the contacts on the relay close, due to the energized coil, you then have power for your loads.

 

[Anil]

hmm.. I want to force the battery.
The reason I want 500 amp output is to see how the battery heats up in experiments.
The coil is not suitable for me, there will be 500amp output but the battery will not discharge with 3C. I will get 500amp.

It is more easy to order Daily BMS for amateur electrician.