agniusm
1 MW
Preliminary sizes:
14s10p - 218x304x85mm
14s6p - 135x304x85mm
10s10p - 218x223x85mm
10s6p - 135x223x85mm
14s10p - 218x304x85mm
14s6p - 135x304x85mm
10s10p - 218x223x85mm
10s6p - 135x223x85mm
If the air can move on top and bottom where the spot-welding is. Than it is for the new high power 18650 cells no problem to stay cool.agniusm said:It would be hard to achieve. Existing holders are designed with the gap. I dont see why you would want it dense as it is good to have a gap for cooling reasons.
agniusm said:The idea of using existing brackets is to have the cost down. Allex, was it easy to get your cell out when you discovered a dud? You need to have support for the cell for the pack to be rigid otherwise glueing them. I think 45C is already shortening cell life and soldering them beforehand does not help either. You and perhaps someone else need high capacity and for me to concentrate on 100 users who need less capacity makes more sense.
agniusm said:The idea of using existing brackets is to have the cost down. Allex, was it easy to get your cell out when you discovered a dud? You need to have support for the cell for the pack to be rigid otherwise glueing them. I think 45C is already shortening cell life and soldering them beforehand does not help either. You and perhaps someone else need high capacity and for me to concentrate on 100 users who need less capacity makes more sense.
Allex said:Not my pack in the picture, but yeah, it is very time consuming to find a dud cell when you have everything spotwelded. This is why I asked about defferent layout for us with limited space in our bike frames(think raptors, phazors, fighters bombers and many more).
Allex said:Regarding the support, spot welding and heatshrink/tape work good as long it sits cramped inside the frame. Ok you and I may see it like unprofessional. But this is how most packs look like! Stealth is using pouchpacks, tape them together and apply heatshrink on top of everything, so nothing unuasual or expensive.
Allex said:I have my cells orginized like that , 20s14p and I am drawing 130-150Amps from them(peak).
The pack is no more than 45C at most so I never felt the need of cooling.
Hi-drain LG HE2 cells
So with your current design would give me less Whrs and probably put more stress on the cells because I have to use less "p" which gives me more heat and less life cycles.
Certainly makes sense, agniusm. If a battery survives that test, it will definitely work on our smooth bikepaths. Looking forward to your products.agniusm said:Yes, one revolution, 2 cycles, my thinking is that force is both directions, same stregth so there fore 2 cycles. The number poses no real value and I would not want to go hectic with this, but I am sure if I complete 8 hour test on this shaker (if it will not fall apart ), sure it will be more than suitable in ebike enviroment no matter how you drive it. I cant imagine any human sustaining such vibrations for 1 hour let alone 8 and most batteries available would fall apart I'm sure.