Nice…if I were starting over, I'd consider going that route. OTOH, mine's just a weekend cruiser---already invested enough in this thing…
Each half of the ex-THINK Enerdel batteries I'm using are composed of 12 Enerdel 17.5ah cell pairs in series, for 35ah @ 31-48v (nom. 1.5kwh).
Each of these halves has its own Enerdel RLEC (remote lithium energy controller) circuit card with CAN interface.
With 10 THINK batteries, I have nom. 700ah @ 31-48v with BMS via 20 of these RLECs.
I haven't enabled the BMS since installing the batteries a couple years ago since their default programming only bypass balances cells when they reach 4.2v/cell---around 50v --- something I never charge the pack to. Currently, my own master control board with Dual CAN interface is set to dynamically adjust the balance voltage based on the minimum cell voltage in the pack. I'm only now testing it, but it looks good.
I don't need a fancy heads-up display, but could add that as a display output later to my setup.
I like the simplicity of the Orion/Andromeda setup, but using 20 Enerdel stacks of 12 cell pairs, any controller needs to manage 240 cell pairs (480 cells) --- something not available directly with BMS options out there. And since these batteries already had CAN-interface remote BMS cards designed for these batteries, that's the way I went. So far, so good. J
Glad to see our lithium options are getting cheaper and that more folks are getting some experience with them.
-Myles Twete, Portland, Or.
From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com]
Sent: Thursday, April 13, 2017 9:02 AM
To: electricboats@yahoogroups.com
Subject: RE: [Electric Boats] Re: wire gauge [5 Attachments]
[Attachment(s) from Steve included below]
Yes there is a single wire to each cell. (see pic attached) Also some shots (also VID) of the EVIC (Andomeda) displays. I don't have a good shot of the wiring for the BMS at the controler, everything is pritty much plug and play though. I'll get some shots this weekend.
Steve in Solomons MD
Lagoon 410 S2E
From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com]
Sent: Thursday, April 13, 2017 11:39 AM
To: electricboats@yahoogroups.com
Subject: Re: [Electric Boats] Re: wire gauge
Glad to hear from someone using the Orion BMS, I am currently using another brand, that just went out of business, I am using the centralized MiniBMS, so switching to the Orion BMS should be just a swap out. Any pictures of your Orion and Andromeda setup? I never really cared for the high and low warnings being dependent on the key position on the MinIBMS any ways.
My current setup looks like this :
You can see that I fused the lines before the BMS. The Orion BMS also just needs a single line to each Cell?
On Apr 13, 2017, at 7:39 AM, 'Steve' sdolan@scannersllc.com [electricboats] <electricboats@yahoogroups.com> wrote:
Mike,
I'm using the ORION BMS with the Andromeda monitoring system and couldn't be happier. It monitors a pack of 48 LiPo's with the balancing within .02V max. It also tells me what the usage is per motor (I have 2 drives) and the % of charge. I charge to 98% at 190AH though the batteries tested at 202AH. I had Andromeda build a custom display programed for my boat and it's at the helm. Both products are fully programable and user friendly.
Steve in Solomons MD
Lagoon 410 S2E
I would also like to hear what people are doing about balancing their battery packs. Who is using an equalized to keep each individual battery equal in the string? What are your experiences?
Mike
Electric Yachts of Southern California
Posted by: "Myles Twete" <matwete@comcast.net>
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