A different approach to battery management...

dbaker said:
Gary,

Can you recommend an alternate part for the Fairchild optocouplers? Mouser emailed me that they expect stock by February 2011 :(

512-MCT6
DIP-8 DUAL PH TRANS
Fairchild Transistor Output Optocouplers 2 FEB 08, 2011
Click to expand...

Any of the ones from this page will work fine. I just got some of these Vishay versions: MCT6H. They are even cheaper than the Fairchild part.

-- Gary
 
I'm trying some CNY74-2H units. These have the same pinout as the ILD2 and a similar output rating (70v).

Mouser# 782-CNY74-2H

Seems like just about anything is cheaper than a ILD2.
 
fechter said:
Seems like just about anything is cheaper than a ILD2.
Click to expand...

That's why I switched to spec'ing the MCT6 awhile back. They are cheaper, they also have the same pinout as the ILD2 and there's a whole page of them on Mouser from various sources. :)
 
GGoodrum said:
I haven't released the 6s balancer variant yet, because Andy and I have found a couple of trace errors. I will be getting a new run of boards this week, and will release them as soon as I get them. I'm also working on a single 18s unit, and 8s/16s variants.-- Gary
Click to expand...
The 12s are good to go? :) (No trace errors, etc.)

Also, I assume by getting the 12s variant I can just plug-n play three 4s LiPo packs to fill out the 12s connection without any adapters or wire changes? Here is the 4s HK pack: HK 4s Nano

Otherwise, what other adapters/wire changes will I need to implement?

Is there any good reason to use the Cell-logs with the logview usb HK Usb Logview Cell-log feature?

Does anyone stock the Cell-logs HK Cell-log, Andy/Gary, anyone? It seems HK has these on backorder for some time now???


Thanks! :)
 
deVries said:
Does anyone stock the Cell-logs HK Cell-log, Andy/Gary, anyone? It seems HK has these on backorder for some time now???
Click to expand...

I bought a few recently from http://www.progressiverc.com/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=56&category_id=12&option=com_virtuemart&Itemid=1 they shipped in 1 day
 
deVries said:
The 12s are good to go? :) (No trace errors, etc.)
Click to expand...

I can't comment yet as I'm finishing a 6S but haven't yet built a 12S. The 12S board appears to be good, though.

deVries said:
Also, I assume by getting the 12s variant I can just plug-n play three 4s LiPo packs to fill out the 12s connection without any adapters or wire changes? Here is the 4s HK pack: HK 4s Nano

Otherwise, what other adapters/wire changes will I need to implement?
Click to expand...

No changes are necessary on the CellLog CMS. You'll be able to combine your 4S packs when you build the harness that connects between the pack and the CMS.

deVries said:
Is there any good reason to use the Cell-logs with the logview usb HK Usb Logview Cell-log feature?

Does anyone stock the Cell-logs HK Cell-log, Andy/Gary, anyone? It seems HK has these on backorder for some time now???
Click to expand...

I just ordered a couple of 8M CellLogs from EP Buddy in Ohio- $17.80 each and free shipping.

Andy
 
deVries said:
GGoodrum said:
I haven't released the 6s balancer variant yet, because Andy and I have found a couple of trace errors. I will be getting a new run of boards this week, and will release them as soon as I get them. I'm also working on a single 18s unit, and 8s/16s variants.-- Gary
Click to expand...
The 12s are good to go? :) (No trace errors, etc.)

Also, I assume by getting the 12s variant I can just plug-n play three 4s LiPo packs to fill out the 12s connection without any adapters or wire changes? Here is the 4s HK pack: HK 4s Nano

Otherwise, what other adapters/wire changes will I need to implement?

Is there any good reason to use the Cell-logs with the logview usb HK Usb Logview Cell-log feature?

Does anyone stock the Cell-logs HK Cell-log, Andy/Gary, anyone? It seems HK has these on backorder for some time now???


Thanks! :)
Click to expand...

Yes, Andy is right. The 12s boards are "good to go". I think you might be mis-informed, however, about what you might need. The CMS/Balancer is just that. It will use the CellLogs to generate the HVC alarm signal which is then used by either the MeanWell-specific Charge Controller, or the standalone Charge Controller, to make sure no cell goes over the HVC trip point. The balancing shunts circuits will engage as needed in order to let the "slow" cells catch up so that at the end of the charge, all the cells are balanced.

For overdischarge protection, you need the LVC boards, which also double as parallel adapters. These boards normally have two variants, one for 6s packs, and one for 8s. You can easily use a 6s board, however, with 4s packs, simply by not populating the last two channels. Instead of 7-pin connectors, you use 5-pin versions.

Then, as Andy says, you can wire up the CMS/Balancer inputs to connect to the three "4s" LVC/parallel adapter boards.

-- Gary
 
what ever happened to those battery medics that had been tricked out? i remember reading there was lack of interest, does anyone know why? that and the cell logs seemed like a very interesting solution since all the intricate circuitry was already there
 
Ggodrum said:
Actually, the opto output could be used for LVC, if you wanted to mount the balancer up on the bike. The only problem is that the CellLogs would be on all the time unless you disconnect them. This version is meant to be a CMS/balancer, which is used externally to balance and charge the packs, and used with dedicated LVC-only boards, like these kits, or the ones that Geoff57 will be offering as completed units. I will eventually do the full BMS version, which includes relays to cut power on the CellLogs unless either the charger is present, or the motor controller is on.
Click to expand...

I've got one of these, as I needed some protection before the zephyr was ready. But I'd really like to use it in this permanently-installed mode. I assume that you aren't actually going to produce such a variant, as anyone wanting to do this should now be using the 4.4 zephyr, but if somone could outline what's needed to retro-fit this, that would be good.

The trick is to disable the celllogs when the ignition is off. You posted a schematic for dpoing that with relays and an enable wire here:
http://endless-sphere.com/forums/download/file.php?id=55477&mode=view
but is there any reason I can't just do it (for 16 channels/2 cellogs) with a DPDT switch or relay, that just breaks the wire to pin1 on each cellog (i.e two separated switched wires) ? Am I missing something?
 
Does anyone have a copy of the "Charge Controller Assembly-Test Instructions-v4.0.7" file that they could post?

I can't seem to view the pdf properly on the one found in this message thread. Only the first page is visible.
 
regmeister said:
Does anyone have a copy of the "Charge Controller Assembly-Test Instructions-v4.0.7" file that they could post?

I can't seem to view the pdf properly on the one found in this message thread. Only the first page is visible.
Click to expand...

I checked my archives and don't seem to have that one. Do you have a 4.0.7 board?
I have what looks like the schematic for that.
 
Hi fechter, I appreciate your checking.

I'm not home, but I think the board is a 4.07a version. [strike]I think I'm ok re: the schematic, as there is one available in the "Charge Controller 4.0.7 to 4.0.7b Change Document".[/strike] Actually, if you could post or PM the schematic, that would be appreciated.

I'm looking for the testing instructions., and info re: use for Lifepo4.

Gary had pre-installed the relay etc..
 
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