is this a crazy battery brick? why chinese fuses causes fire?

batteryGOLD

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Dec 14, 2019
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Hi there battery fanatics. I have some new content to post..
Check this crazy battery design. why it includes 32 blue cells mixed inside this brick and a extra 2P brick? what's happening here? I'm trying to guess using reverse "engineering"..
And why chinese fuses keep burning? some of those goes on fire inside battery!! this one damaged cells inside battery due to overheating transference to battery structure, damaging few cells inside battery!

PS: the chinease battery have a scratch sticker for wining a prize! scratch that and see if got prize. if scratch appears values "100GBP or $200 or 500eur or nothing!" Thats what U get!




battery1.jpgbattery2.jpgchinese fuse.jpg
 
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With 128 cells, it could be 16S-8P. There are seven 18 cell bricks. Put 2 groups into each 18 cell brick, and that takes up 16 cells. Then you can put a 2x4 into four of the bricks and a 2x3 block in the last three bricks. Finally a separate 2 cells outside. That explains those black wires.
 
Basically fuses protect wires and lead acid batteries. Lithium batteries and electronics not so much as a short overload can cause damage.

The attachment is pulled at random from my collection but the shape of the Average Time Current graph is typical (note it is a log/log graph). Electronics are good for < nanosecond and lithium batteries depend on the design but probably a second or so (guess)
 

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With 128 cells, it could be 16S-8P. There are seven 18 cell bricks. Put 2 groups into each 18 cell brick, and that takes up 16 cells. Then you can put a 2x4 into four of the bricks and a 2x3 block in the last three bricks. Finally a separate 2 cells outside. That explains those black wires.
yes Sir, I guess U are correct. the matter is that works nice and well distributed current transmission lines(black cables) and meets the shape brick requirements. other battery shape not possible to go on this escooter..
all 16S elements have arround 5mOhms @ 8P , and all 16S elements at same voltage, soo is a well balanced battery and same impedance at each S element.
This ends with a 80mOhm 67,2V 22Ah battery for 30A current peaks escooter, maybe average current draw could be +20A doing sport driving (its a citycoco chinese scooter (two wheels, tires 225/55-8) w 2KW motor and 2KW controller.. expecting a better scooter? this one goes almost "fine", but it can't take rain!)

soo it goes for +1hour sport driving average 45-50Km/h (means 50Km range driving sport mode) , its almost impossible to drive many km's at this citycoco model, because no suspension and very reactive to throttle!!
 
Basically fuses protect wires and lead acid batteries. Lithium batteries and electronics not so much as a short overload can cause damage.

The attachment is pulled at random from my collection but the shape of the Average Time Current graph is typical (note it is a log/log graph). Electronics are good for < nanosecond and lithium batteries depend on the design but probably a second or so (guess)
Thanks for information.
fuse is supposed to protect electric circuit, and not to melt or going on fire inside a battery case.. , but some of those chinease plastic fuse holders(with a 30A or 40A car fuse) have this kind of issues. most used at citycoco scooter batteries.

allways check your citycoco plastic fuse holder to replace with a good brand fuse..

is better to use a fuse that could melt/going on fire or not using any fuse? the battery bms could act as a electronic fuse maybe :unsure:
 
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