24v 7s 30 parallel to super capacitor power box. Will the below work?

[ecnsupplies1]

I am building a power pack using 310 ea 18650 3500, 10a batterys. 24v 7s and 30 in parallel. I also have a step down transformer to 13.8v. Connected to 4ea 700f super capacitors is parallel. That's a total of 16v capable of 2800f of energy, I connected it on a switch to turn off when not in use. My goal is to use the super capacitors to jump start a car or used as boost on a 2000 amp inverter. The extra boost from super capacitors my goal is to assit if using a small ac that will require the inverter to max out and draw the temporary power before it settles down. Or to Have other ports connected to only the battery for step down USB hub, or other 12v devices. And other 24v devices.
Will this work with super capacitors. I will connect a reverse diode between the super capacitors and battery to protect them.

 

[Gruesome]

What's the voltage rating on the supercapacitors?

 

[rafalg]

With such battery i suppose you could just start the car directly, without any capacitors. And are you sure the inverter needs any 'boosting', whatever that would be?

 

[ecnsupplies1]

The BMS is only 60amps. Using the super capacitors to increase the amps. Car battery need upwards of 250 to 600 cca. If I understand it correctly. Not sure if I will need fit for an inverter but a small air conditioner will pull some amps on start up.

 

[Gruesome]

And what do you mean by 'step-down transformer'? A DC/DC converter? If your battery storage is at 24V, then the DC/DC converter will have to be able to provide the full current.

 

[gromike]

Most those super capacitors are in the range of 3v, so you would to need to put them in series and probably more than 4. I might be wrong, but would like the link to your capacitors.

 

[ecnsupplies1]

I have have 4 sets of 6ea. They are 700f Total ea. Not 116ea. They will support up to 16v but limited by the step down transformer I am using to 13.8v. This will allow it to crank a few extra times. Only using 1 set was not enough for my V8 truck.

 

[ecnsupplies1]

And what do you mean by 'step-down transformer'? A DC/DC converter? If your battery storage is at 24V, then the DC/DC converter will have to be able to provide the full current.

I have some devices that need 24v. So have a plug for that to charge and to connect devices. Most are 12v. So using a step down dc transformer to limit it to 13.8 v. The. Using 4 sets ea 700f super capacitors At 16v in parallel to jump start the truck many times if necessary. That's a total 2800f. This is a multi device for every I could possibly need. Or this is what I want it to be if all works right and I am not confused on this. I know enough to get me into trouble. LoL. Thank you

 

[Gruesome]

That did not answer my question. Transformers do not work with DC. If you need a high current capable device at 12V, then whatever delivers the 12V has to be able to provide that current. 600A capability at 24V doesn't do you any good if the thing providing 12V is a small (compared to 600A) DC/DC converter. Putting the supercapacitors in parallel with your 24V battery only helps with current capability at 24V.

But if you can charge the bank of four 16V 700F supercapacitors with your 12V DC/DC converter, then they could deliver 4*700F*(13.8-10)V=10,640 Coulomb or Ampere seconds, which is 600 Amps for almost 18 seconds while discharging from 13.8V down to 10V.
Charging the supercapacitors might take a long time though, depending on what current your DC/DC converter can deliver.

 

[rafalg]

The BMS is only 60amps. Using the super capacitors to increase the amps. Car battery need upwards of 250 to 600 cca. If I understand it correctly. Not sure if I will need fit for an inverter but a small air conditioner will pull some amps on start up.

I dont know much about super capacitors, but if it works for you then good. However, there are some questions still
- what is the input voltage of the inverter you're talking about? You're building a 24V battery, but have a 16V capacitor bank you'd like to use for 'boosting' the inverter - that, i assume, is supposed to run off the 24V battery. So the input voltages don't seem to match, it won't work.
- what is the main purpose of the battery (i mean why it's 24V?). Is it for powering the inverter, mainly?

You have 60A BMS, but the battery is capable of providing 300A without much problem, i would just replace that BMS with something more powerful instead of 'boosting' anything with capacitors.
And with jump starting the car with the capacitors - i think it's a separate project to build a reliable jump starter. And remember there's still the 12V battery in the car that, if not entirely dead, can provide big part of the current needed, you need to just add some more. If your big battery pack is perfectly capable of outputting 300A... who needs the capacitors?
I'd just take 4S section of the battery (16.8V fully charged) and use that for jump starting (bypassing the BMS), or just for charging the car battery a little before cranking the engine.

(edit) 16.8V could be a bit too much for the car battery to handle, 3S (12.6V) would be safer, or just charge via step-down converter.