bq77PL900EVM

I do not have a picture available.  The part will work with 5 to 10 cells.  Resistors are recommended for initial operation to become familiar with operation of the board and check configuration and settings.  Once everything seems to work, checking with cells is certainly wise.

To set the board for 6 cells:

• Connect suitable resistors for the lower 6 cells, see figure 2 of the EVM User's Guide. 10 ohm to 200 ohm may work well depending on the power rating you have available and the intended tests.  Lower value higher power resistors will get hotter, but will allow less voltage variation if you operate balancing.
• Connect the upper cell inputs together and to the highest used input: 10P to 9P and continuing through 6P.
• Set the configuration jumpers for 6 cells
• Apply power with a power supply

Once operation is verified:

• Remove the power supply,
• Remove the 6 resistors leaving the unused cell connections
• Connect the cell stack together, positive to negative
• Be sure the EVM is off and the pack side capacitance discharged
• Connect the cells from the bottom up.  Since the board connects the top and bottom monitor inputs to the  high current path, and the unused cell connections will connect 10P through 6P:

1. Connect the cell stack negative to BATTERY-
2. Connect the 1st cell to 1P
3. Connect the 2nd cell to 2P
4. In order, connect the next cells to 3P, 4P, 5P
5. Connect the positive of the cell stack to 6P
6. Apply a Pack voltage to wake the part and check operation

The software has a regional setting dependency.  Please set your computer's Regional and Language Options to "English" while running the software.  If necessary "English(United States)" and location "United States" were used in its development.

Thanks a lot for such answer. I still have a few questions: while testing the initial operation, should I put any power supply to PACK+ and PACK- ?

I try to put a power supply (~15V) to BATT+ and BATT- and a few Volts to PACK+ and PACK-. When this voltage is over 7.5V, XALERT goes low. I think it is working good....

I will try to put my computer's langage Options in English. Should I uninstall the software before ?

My computer is now configured as if I live in USA, and it is working !! It's very strange that it have to be configured like this... Anyway, you had the solution ! Thanks, I have already began my tests =)

Something in the software must be dependent on the decimal separator, so it works with some languages but not all.  Sorry for the inconvenience. You should not need to un-install the software or reboot the computer, but that may be system dependent.

Yes, once you have applied a battery side voltage, you will need a sufficient voltage on the pack side to wake the part.  This might be as simple as a low value resistor from battery+ to pack+ or a power supply.  If your power supplies are sensitive to reverse current be sure to use blocking diodes since when the part wakes up with normal cell voltages it will close the power FETS and essentially short the power supplies together. When you are satisfied with the operation and settings with the simulated inputs and move to cells, you will still need to apply the pack side "charger" voltage to wake the part after cells are connected.  A charger of course would be designed to connect to a voltage and the diode would not be needed.

A problem like this in 2013...

It would have been wise to put a warning window, this will avoid having to waste a lot of time for such considerations. I think your software applications (tools, EVM, etc) leave much to be desired...

Most of the questions on this forum are directly related to the fact that the datasheet is very poor, I do not even talk about the document of evaluation tool. It is time to think about you.

Rgds.