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frc-4931 / 2014-Design

The files, issues, wiki pages, etc. for the design of our 2014 FIRST Robotics Competition robot
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Create battery cart & battery charging/handling procedure #47

Closed rhauch closed 10 years ago

rhauch commented 10 years ago

The concept basically is to have one or two battery chargers mounted on a two wheeled cart, a place to store the cables when not in use, rubber padded slots to place batteries, and a bar to hold the batteries in place, during movement. Use Velcro straps to hold the batteries in place while it is in the pit, just for protection of the batteries. Have slots for charged batteries and slots for batteries needing charged.

We can always be ready to compete with a fresh battery (even with back-to-back events) by having two charged batteries and some on the charger.

We also need to have a battery charging/handling/usage procedure that we stick to.

Polluxium commented 10 years ago

Requirements: Charge at least 6 Batteries At least 3 chargers Movable/Must have wheels Can fit in a car while loaded Extension Cord

Not necessary: power strip

We may be using the church's trailer, which is big enough for us to put a large cart, as well as most of our other stuff.

randej commented 10 years ago

Also need procedure for handling batteries:

bctwaugh commented 10 years ago

When I went to harbor freight the other day, I saw the carts you had suggested. I also saw a bunch of dollys to build the cat from. I think it would be easier to start with that and build a case to attach to. I also picked up tools. I'll have Tommy bring them tomorrow. On Feb 18, 2014 2:07 PM, "Randall Hauch" notifications@github.com wrote:

The concept basically is to have one or two battery chargers mounted on a two wheeled cart, a place to store the cables when not in use, rubber padded slots to place batteries, and a bar to hold the batteries in place, during movement. Use Velcro straps to hold the batteries in place while it is in the pit, just for protection of the batteries. Have slots for charged batteries and slots for batteries needing charged.

We can always be ready to compete with a fresh battery (even with back-to-back events) by having two charged batteries and some on the charger.

We also need to have a battery charging/handling/usage procedure that we stick to.

Reply to this email directly or view it on GitHubhttps://github.com/frc-4931/2014-Design/issues/47 .

randej commented 10 years ago

We talked last night and decided on a simple cart with pneumatic wheels.  We figured we could always add a hydraulic cart for pit work later and still use the basic cart for transport to/from the field.

If you think we should build from the dolly's instead, then let's revisit on Saturday.  If you're only talking simple cart, then we can just pick one up.

FYI, I received the battery cart design file from team #33, the Killer Bees.  It's a full build list with AutoCAD drawings and looks AWESOME!  We'll definitely want to have a look at it on Saturday to see if we'd like to go that route.  Since it's a 12MB file, I'll upload to DropBox later tonight.

RJ

From: bctwaugh notifications@github.com To: frc-4931/2014-Design 2014-Design@noreply.github.com Cc: Rande Johnson Rjcycle@sbcglobal.net Sent: Friday, February 21, 2014 11:16 AM Subject: Re: [2014-Design] Create battery cart & battery charging/handling procedure (#47)

When I went to harbor freight the other day, I saw the carts you had suggested. I also saw a bunch of dollys to build the cat from. I think it would be easier to start with that and build a case to attach to. I also picked up tools. I'll have Tommy bring them tomorrow. On Feb 18, 2014 2:07 PM, "Randall Hauch" notifications@github.com wrote:

The concept basically is to have one or two battery chargers mounted on a two wheeled cart, a place to store the cables when not in use, rubber padded slots to place batteries, and a bar to hold the batteries in place, during movement. Use Velcro straps to hold the batteries in place while it is in the pit, just for protection of the batteries. Have slots for charged batteries and slots for batteries needing charged.

We can always be ready to compete with a fresh battery (even with back-to-back events) by having two charged batteries and some on the charger.

We also need to have a battery charging/handling/usage procedure that we stick to.

Reply to this email directly or view it on GitHubhttps://github.com/frc-4931/2014-Design/issues/47 .

— Reply to this email directly or view it on GitHub.

randej commented 10 years ago

Came up with a battery cart design last night with @rhauch and @Polluxium among others. Supplies needed:

Structure:

Power/Electrical:

Batteries:

agausmann commented 10 years ago

As of 3/10/14, the battery cart is working, except we are waiting for a replacement fan and a few battery meters that will all be here post-competition. Close-worthy?

rhauch commented 10 years ago

Yup. I'll close it.