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Help me understand Batrium Balancing
#11
Top bleed should be 0.3V above your max voltage. So if your inverter is at 4.11 Volt it should be at 4.14 or 4.15 at earliest.. Or else you bleed energy all the time.

Auto level feature on other hand kan start at 4V + and soc 90%+ and idle load and diff more than lets say 0.05V?

Critical level i would set at 4.2 or even 4.22V or equal. (No the battery wont die of it)
The Ultimate DIY Solar and build place
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Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
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#12
[color=rgba(0, 0, 0, 0.87)]The BMS (Batrium Watchmon) has been working for weeks to bring the 14 packages (14S100P) to the same voltage. I entered a spread of max.0.03V in the BMS. The 14 blocks are close together, but it turns out that block # 12 is always the one with the lowest voltage. So the BMS fills in the other 13 blocks during the day so 1000-4000 mah to keep the 14 blocks together. Is that OK ? Can I run the system like this or is there a bug to fix in the blocks? My question is also whether the parcel # 12 is the best or the worst? According to my logic, in the other 13 packets, the energy is converted to heat because these packets can not absorb energy. Packet No.12 has never converted energy into heat. Now I'm thinking about removing two cells in package # 12, so that the 14 packages come together better again.[/color]
PV: 99 Q Cells 8.33kWp  30°  100% S
Inverter PV: SMA STP 9000TL-20
BAT: 14P100S 18650-Zellen ~10kWh
BMS: Batrium WatchMon4 + 14 LongMon
Inverter BAT: SMA SI 4.4M-12
Car: Opel Ampera Bj.2012
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#13
The problem is that pack 12 self discharges. You should most likely find that cell when you get time.

Removing cells on random wont help unless ur on winning spree Smile
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
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#14
(08-16-2019, 02:03 PM)peterpopper222 Wrote: [color=rgba(0, 0, 0, 0.87)]The BMS (Batrium Watchmon) has been working for weeks to bring the 14 packages (14S100P) to the same voltage. I entered a spread of max.0.03V in the BMS. The 14 blocks are close together, but it turns out that block # 12 is always the one with the lowest voltage. So the BMS fills in the other 13 blocks during the day so 1000-4000 mah to keep the 14 blocks together. Is that OK ? Can I run the system like this or is there a bug to fix in the blocks? My question is also whether the parcel # 12 is the best or the worst? According to my logic, in the other 13 packets, the energy is converted to heat because these packets can not absorb energy. Packet No.12 has never converted energy into heat. Now I'm thinking about removing two cells in package # 12, so that the 14 packages come together better again.[/color]
Welcome fellow ampera owner...
Current system: 9.6kWh wet Nicad batteries, 16S1P Calb LiFePo4 210aH, Batrium WM4, Outback vfx3048 inverter, mx60 mppt controller, flexware 500 mounting hardware, 2.4kW solar array, 6kW lister diesel genset. MY'13 Vauxhall Ampera
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#15
Hello Ampera owner! hello HughF

Hello Daromer, thx for the information. How can i find the self discharges cell?







https://www.photovoltaikforum.com/thread...man-angst/
PV: 99 Q Cells 8.33kWp  30°  100% S
Inverter PV: SMA STP 9000TL-20
BAT: 14P100S 18650-Zellen ~10kWh
BMS: Batrium WatchMon4 + 14 LongMon
Inverter BAT: SMA SI 4.4M-12
Car: Opel Ampera Bj.2012
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#16
You need to bring out the pack and dismantle it. Let it sit for a week and then meassure each cell and you quickly Will see the cell or cells self discharging
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
Reply
#17
... I had already thought that this is a lot of work .. thanks for the info
PV: 99 Q Cells 8.33kWp  30°  100% S
Inverter PV: SMA STP 9000TL-20
BAT: 14P100S 18650-Zellen ~10kWh
BMS: Batrium WatchMon4 + 14 LongMon
Inverter BAT: SMA SI 4.4M-12
Car: Opel Ampera Bj.2012
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#18
You might be able to narrow it down faster by dividing the pack in say 4 & see which 1/4 (or more) discharges. Then repeat 1/4ing of the problem 1/4's, etc.
Like daromer says you might just lift all the fuse links...
Running off solar, DIY & electronics fan :-)
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#19
As has been mentioned here and there - this is where having an extra pack can come in handy. You can replace the erring pack and then not feel as rushed to diagnose it.
peterpopper222, Headrc, daromer And 1 others like this post
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#20
an extra pack....
that was also my idea ... first of all build a new replacement pack ...
PV: 99 Q Cells 8.33kWp  30°  100% S
Inverter PV: SMA STP 9000TL-20
BAT: 14P100S 18650-Zellen ~10kWh
BMS: Batrium WatchMon4 + 14 LongMon
Inverter BAT: SMA SI 4.4M-12
Car: Opel Ampera Bj.2012
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