Hello, then... lets go.
Here a circuit for 4s. Just as an explainer.
Sorry comments still in german.
You may think thats a first of an newbie in the electronics beginners lesson hour 1, then I understand your point.
But you are wrong.
Perhaps i describe how this has developed, without...
I worry about the above BMS used by anybody here, or is rejected because of the low balancer current?
I found A VERY simple circuit which can provide nearly every current desirable, means several Amps, still under full control of the BMS.
So, if the JBDs or Dalys might be sufficient for you...
Strange things happen sometimes.... when i wrote the above, it was just a concept i wanted to have, but didnt know how to do it.
Then i found a working solution which is in general described in https://secondlifestorage.com/showthread.php?tid=7330
Sorry i'd better put some of the stuff there in...
As promised I will describe circuit and Plan of my bidirectinal converter.
I suggest you guys will ask and discuss about it, so i will transfer this building description to a separate thread in electrical section, You all Know his section is for concepts, not for discussions.
Since i had put...
i am trying to reengineer 10s6p blocks (bikeblocks) down to 7s6p by reconnecting them. Reason is i need a few 7s Blocks, and i have a couple of 10sxp blocks with 1 or 2 dead stages.
Is it necessary to remove all unused cells ( which is devilish task) instead of just...
Hi folks, quite awhile since i was here.
Next inverter in work, the first one still running smoothly.
What a simple system came out of this mad idea. Rare succes.
I reduced the battery down to a 36 V 12 Ah one, the big tripleblock had just Too much (!) stored energy. I was not able to empty...
Real life experience has driven the combo in lots of strange but possible real life conditions.
And then the converter failed, without other notice (like fuses, smoke).
Failed hat the buck converter, its functionally dead, with life Mosfets, but obviously the IC is dead, and the input...
Sorry i couldnt itentify the IC, it was covered with adhesive wich fills the laser marking. But i am sure its the LED control, especially because it is close to the LEDs, and its the one and only IC on the whol board.
So as Korishan mentions i have to assume that Bosch has found a method (or...
Just to give an Update, i have Made a 10s18p block out of 3 Pedelec batteries. The converting in both directions simultaneously rund smootly. Its 36 V about 50 Ah.
4 Weeks Test in A mobile Home successful.
Ah, you shouldhave known i am able to recognize data communication and serial lines (Chuckle). Dont worry.
The large shunts are fuses. Melting fuses.
Sure it is original.
I look for the IC, but its circuitry for the Filling led of the pack, i guess.
I would fully agree, an oddity.
Tscha, you dont believe me.
That answers half of my question.
For the other half, i have to make you believe.
Here we go:
One side of the Board in the block.
The other side.
THis is the "Middle" of the final block, opened.
One end of the Block.
Hi to all,
Yesterday i obtained two powertool Blocks, one from Bosch, the other one obviously the same construction.
One is 36 V, 10s2p, 36 V.
The other one is labeled 72 V, but contains two electrially isolated strings of 10s1p. (of 36 V)
Cell Type is as said: INR 18650-25R.
I guess the limit is 20 Amps, isnt it ?
I am sorry, there is not something like the best concept. There is only a advantageous compromise to your needs. So you have to share them first.
Isues are cost, quality, experience, equipment, lifetime expectation, ressources, Time available. Just as a...