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Sourcing a Battery Pack for ROV deployments

Sourcing a Battery Pack for ROV deployments

(OP)
Hello All,
I have an instrument which needs to be deployed, along with an independent power pack to act as a UPS during the deployment. Does anyone have any recommendations on sourcing a deployable battery pack, including a pressure vessel. The battery pack's pressure vessel must be rated for 2000m depth. The pack has to be able to supply 12+ Ah with peak draws at 5-6A and steady current in the ballpark of 3-4A. Any thoughts on the topic are appreciated.
Regards

RE: Sourcing a Battery Pack for ROV deployments

what other requirements do you have? size? weight? number of cycles? cost?

I know silver zinc batteries are used at that depth, for example. It would appear to be attractive to use a vanadium pentoxide redox battery system, since all the working fluids are aqueous solutions it would not need a pressure vessel.

Cheers

Greg Locock


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RE: Sourcing a Battery Pack for ROV deployments

(OP)
Hi Greg,
Thanks for getting back. Here are the requirements :
24V DC
Discharge rates must be able to spike over 6A
Discharge rates are generally 3A
Requires 20 - 25 Ah

When you say that a Vanadium Pentoxided redox system would not need a pressure vessel, are they built to flood with ambient water, or are they filled to equalize pressure without any internal voids ?

RE: Sourcing a Battery Pack for ROV deployments

(OP)
Size and Weight we can roll with to an extent. To ballpark size, 8 cubic feet in volume would be at the upper limit and 200 lbs in weight.

I'll check out your links, thanks. Any thoughts on Redux battery sources ? I'd probably better look at a catalogue

RE: Sourcing a Battery Pack for ROV deployments

(OP)
Thanks Greg, I'll look into the Vanadium Pentoxided technology in general terms in any case.
I was really not being specific about the battery sizes, just ball parking the roughest possible boundaries of my system. It's early in the design, so I don't want to get bogged down in decisions which may limit my options.
Best Regards,
Gary

RE: Sourcing a Battery Pack for ROV deployments

there are several aftermarket solutions available to you. google bluefin, DeepSea Power and Light, or just "subsea battery".

I've personally used the DSPL packs with good results.
http://www.seatronics-group.com/equipment-rental/p...

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