Battery Vehicle Society

This board is for any style of cell, prismatic, pouch or cylindrical in the range 5-200ah.

This board will shortly be in use in my second lithium upgraded Honda insight which uses 50 x 20ah A123 pouch cells.

It was designed to use the plain 12F683 pic chips and does not support ICSP or pin programming for the Picaxe 08M variant.

Hardware

Cells share sense voltage sense leads and the BMS board can be remote from the battery pack if required. Or if your pack is split into seperate compartments, each one can have a slave board poplulated with as many slaves as are required for that compartment.

It can be used in the digital configuration only.

The digital configuration requires a Master Pcb but gives full individual cell voltage reporting and other features.

25 Cell Slave Digital board assembled http://www.solarvan.co.uk/bms/25CellSlave004.jpg

Software

The current software for the Picaxe 08M digital pcb layout is http://www.solarvan.co.uk/bms/DIGITAL_S ... 00BAUD.txt

The current software text file for the plain pic 12F683 digital pcb layout is http://www.solarvan.co.uk/bms/pbpsla06.txt
The current software hex file for the plain pic 12F683 digital pcb layout is http://www.solarvan.co.uk/bms/PBPSLA06.HEX

Note the above software in blue does not contain or utilise the slave command functions.

The current software text file for the plain pic 12F683 digital pcb layout with commands is http://www.solarvan.co.uk/bms/PicMultiS ... 300510.txt
The current software hex file for the plain pic 12F683 digital pcb layout with commands is http://www.solarvan.co.uk/bms/PicMultiS ... 300510.hex

Note the above software in red is also used with the single cell slave boards and contains the full command functions. This is the recommended version.

Hey, Peter, the two hardware links don't work. They contain only the directory name, not the filename.

Bill

Does anyone have the schematic for the 25 Cell Slave Board? I'm informed that you may have it greg

PM him

Here's the schematic. The pic shown in the schematic is wrong, it should be 12F683 not 12F675.

Remember Dan/Josh the schematic may not contain the newer recommended component values, so change them to match what you have on your other boards.

Just finished some testing on the fully assembled boards with the new values, everything seems to be working great, and getting accuracy of inside 20mV, very pleased with that