I've looked through this some more... There is a definite need for correction & clarity and some of the terms used ? Heck if I know where you guys pulled that from, translation issues maybe ? LVD/HVD (Lo/Hi Volt Disconnect) are just that and always have been.
Many companies produce Balancers, Active or Passive but several are K.R.A.P. and this is NOT NEW. There are many variations and some with assorted features & functions not directly related to balancing... Most issues are related to not understanding the tech, making "assumptions" and jumping to conclusions , so in other words 90% is user error, which sometimes results in doing the wrong thing and causing damage. Think of a Balancer designed for NMC being plopped on LFP Pack, voltage ranges are wrong and cause damage, folks have done it and blamed the device they chose which was the wrong one for the chemistry.
* Same applied to BMS' when someone buys the wrong BMS or misconfigures a "Smart One" for the wrong chemistry. IE a person using a Chargery on LFP but using LITO settings = not terribly brilliant ! BUT they Blame the Chargery BMS because THEY were not too bright and refuse to admit it. SEEN IT MORE THAN ONCE !
Up until recently <12 months) most BMS' on the market had no balancing capabilities at all. Some had Passive Balancing and the rare one had some form of Active Balancing. Passive is only really valuable for either small cells <25AH or for properly Matched, Batched & Binned cells.
Active Balancers (Proper Known Good units) work well on larger cells and older tired cells which are losing some capacity levels.
Many people, like myself, use dedicated Active Balancing on new High Capacity Cells (in my case 175AH used cells & EVE 280's which are new) and they do keep things nicely leveled up. I have repeatedly explained what Matched/Batched/Binned is and how it's done and far more than 3 Times. I've provided links to Docs, White Papers & Research on the subject yet still have to repeat'n repeat...
Some people get the idea that a BMS or Balancer system can FIX weak / damaged or poor cells.. They simply cannot, nothing can fix a cell, period, end of sentence.
I tried to address some of the misconceptions about BMS' and that thread had to be locked because it was headed towards Circular yapping on a topic that is not my thing. A BMS has ZERO, to do with specific cell charging in a battery pack, they do not control or direct power in Volts/Amps to any specific cell within a battery pack. But heaven's to mergatroids some folks think it does... Rule of Three Exceeded, that thread was locked down.
BMS as a topic is HUGE !
There are MANY Types of BMS' and only a "few" types are exposed in this forum. Many can't even resolve Common-Port to Separate-Port BMS'.
Decentralized, Centralised, Master/Slave, Distributed and more... Some have advanced controls for real EV's with Automotive CanBus Interfaces as well is vehicular integration for regenerative braking, heating/cooling battery systems, to gauge integration and more...
While a WIKI Entry may seem like a good idea, the volume of info required to do this is huge and complex. It would likely be more prudent to use established knowledge bases and provide a brief overview & link to the subject matter. Why attempt to rewrite something that is already well documented elsewhere.
Personally, I am hesitant to add to this Wiki Entry. It is a minefield and that's never good. I really suggest placing Known Good Verified proper technical resources LINKS and let the people learn if they want to. We can lead any horse to water but it's up to the horse to drink it or not.
Sorry, not the help / answer you wanted, it is what it is.
FYI: Ferengi Rules of Acquisition. Very True in the 21st Century.
285 | No good deed ever goes unpunished. |