charging to 4.2V/cell.
Lithium Polymer (LiPo) actually refers to a type of construction rather than a chemistry, but
the vast majority of cells marketed as LiPo are Lithium Cobalt (LiCo) chemistry.
autoMatic Pack BaLancing
In battery packs built from many cells, optimum performance is attained when all cells are at
the same State of Charge – also known as pack balance.
The BMS12 modules use a system known as “shunt balancing” to maintain balance, which
switches on small resistors across any cells which go above a programmed shunt threshold.
In this way cells with higher than average voltage will have some of their energy dissipated
in order to bring their state of charge back down towards the average.
The shunt balancers are not able to balance a pack completely in a single charge so we
recommend manually balancing your cells prior to initial pack assembly (by charging each cell
individually, or wiring them all together in parallel). However the shunts will get an unbalanced
pack incrementally closer to balanced each charge, and once balanced are able to maintain
balance with minimal shunting.
can ProtocoL detaiLS
For those wishing to integrate BMS12 modules with their own master control unit, we have
prepared an application note detailing the required CAN format and packet IDs/structures.
Please download a copy from the BMS12 product page at
http://www.zeva.com.au
.
tech SuPPort and Warranty inforMation
BMS12 modules are covered by a 12 month warranty against manufacturing faults or failures
under normal operating conditions. The warranty does not cover misuse of the product,
including but not limited to physical damage or modification to the module, and reverse or
excessive voltages to inputs.
We have taken great care to design a safe and reliable product, but faults can happen. If
you believe your BMS12 module has a fault, please contact us via our website for RMA
information. Or if you have any questions not covered by this manual, please contact us via
our website:
http://www.zeva.com.au/contact
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