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Distributing battery power to multiple components

skjohnson

Hello all,

 

I'm hoping to get some help with a problem that I'm not remotely qualified to figure out myself. It calls for an electrical engineering type, while I'm a physicist. Unfortunately, I'm all there is, so here I find myself.

 

I have a robot platform powered by a 24V 20Ah battery. The platform includes three set onboard power options:

  • 24V/5A
  • 12V/5A
  • 5V/5A

 

My requirements are actually the following:

  • 2x computer @12V/5A

 

Then the other items use a variable amount of current:

  • 3x DSLR @8.1V
  • 3x camera lights @7.2 to 8.4V (according to the specs, "9.6
  • 1x stepper motor @11V+ and current somewhere in the neighbourhood of 2 to 4A

 

I'm not really good with power, but from my limited understanding, I should ideally have some sort of circuitry to regulate the power and avoid any sort of spikes. The robot has just this sort of solution, as shown below:

 

image

image

I'd like to keep the computers running from the above convenient rail, but I'm wondering what a solution might look like, to power the other components that have variable current requirements. Should I be focusing on getting the specific voltage correct to each of the components and then letting the battery supply the appropriate current, or am I supposed to keep both in mind?

 

If I don't have to design anything from scratch, it would make life easier, but I'm game for anything, really.

Parents

  • Is this a commercial project ?

     

    I ask because my first advice is for you to pay some one to sort this out !

     

    It looks as if you will almost certainly need at least one DC-DC convertor to make the right supplies for the cameras and lights but I would need to see the actual specs of the items to be sure. The stepper motor will need some kind of controller (perhaps you are already allowing for that.)

     

    Any way you don't want to blow up any of this stuff and you easily could.

     

    MK

Reply

  • Is this a commercial project ?

     

    I ask because my first advice is for you to pay some one to sort this out !

     

    It looks as if you will almost certainly need at least one DC-DC convertor to make the right supplies for the cameras and lights but I would need to see the actual specs of the items to be sure. The stepper motor will need some kind of controller (perhaps you are already allowing for that.)

     

    Any way you don't want to blow up any of this stuff and you easily could.

     

    MK

Children