Ovechkin Skates What Kibd

first measurement in the charge up charge voltage

Hi, I have just made

also still the same, the first measurement with my built-in voltmeter.
following charge voltages encountered in my 20 cells. Was loaded with the standard Thundersky charger.

cell number, voltage in V

2. 3.44 3.30 3.56
5. 3.54 3.48 3.57
7. 3.63 3.44
10. 3.48 3.31 3.44
13. 3.75 3.67 3.59
16. 3.46 3.51 3.44
18. 3.39
19. 3.43 3.36

daszu I must say that my BMS, the first three cells are no longer monitored (is related to a small mishap).
While charging two or three cells were very briefly to values up to 3.84 V. That was right at the end of charging, the charger before briefly reduced the wattage and then switched a few seconds later all the "green" (ie shop finished) has.
I then immediately with the traverse started and I then get the top values. The voltage across the cells is thus very quickly again to lower values. When I then again a second time shortly durchgezappt by all cells have, the values were adjusted further, as seen from my collection.

During most of the charging process, the vast majority of cells were almost the same values. What I
says that now?
I think this means to me that I have the weakest cells times during the trip as a test should monitor the voltmeter. Above all, cell 2, since this is not only the weakest, but also by the BMS no longer monitored.

tips on how I measure better or more useful are welcome.

Movie About Groping In Japan

Manual voltage control of single cells - Part 3: voltmeter and associated Power

Hi,

finally comes. After my last year time was no longer possible to complete my project of an integrated manual monitor individual cells, I have now successfully completed the project today.
to technology, how can I switch between the individual cells, I have written in the first two parts have sufficient lot.
Now It was just a matter of the voltmeter to be connected correctly and installed a battery compartment for AA cells for the separate power supply to the instrument.
In the first picture you can see the voltmeter, which just displays the voltage of a cell.

The following pictures show the battery compartment, on which the voltmeter to the operating voltage of 9V is supplied. The subject I have shallow rear integrated directly into the removable bottom flap of the helmet compartment. That was pretty easy, since the subject was chosen to match its dimensions.
Also, I've built two mini-banana jacks so that the voltmeter can also be operated with a separate power supply (If there are no batteries to hand times).

Some are now wondering, perhaps, why I do not have the power to the voltmeter directly tapped as the light.




Well, that was originally ill-way of the plan.

Unfortunately in the experiment then found that my voltmeter is no difference between the mass or the negative terminal of the operating voltage and the ground or the negative terminal of the measuring voltage. This then led to the voltmeter, want to be added depending on which cell you, not stress got to maybe 4V, but up to 70V. This was my first voltmeter unfortunately destroyed :-(
I'm not a real electrician ;-)


But now everything works great and I feel with the structure, combined with my homemade switch is not only possible to measure each cell individually, but also on demand via sockets on the switch (I have I already described in detail below) load cells individually.
However, only with a maximum charge current of less than 500mA, as fuses are installed, go through the usual.

So that is all for now. As soon as I once made bissel measurements, I give around here.
greeting