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There is a lot of hype about battery management systems for Lithium Ion batteries. Should a BMS have cell by cell voltage monitoring and reporting to a central display unit? Should cell temperatures be recorded and reported? Should the BMS be able to bypass large charge currents? What about active balancing and a CAN bus interface?
The answer is, NO. These functions are not essential.
Sophisticated BMS’s may provide an impressive list of functions but are prone by their very complexity to problems both in installation and usage.
SIMPLICITY = RELIABILITY.
SIMPLICITY = LOW COST
SIMPLICITY = EASY TO UNDERSTAND
The EV Power BMS is the simplest system in the world that will actually provide balancing and fail safe voltage protection of large format LiFePO4 batteries
Extra monitoring functions can be easily layered on top of a simple BMS. A simple BMS should form the core of any large format LFP battery.
Modern LiFePO4 cells are very safe and manufactured to close tolerances. With a BMS they will not explode or catch fire. They should be highly reliable and operate with the minimum of intervention from the BMS. It is there as the last line of defence.
The EV Power system designed for LiFePO4 cells of 40Ah and larger performs the basic functions simply and well. It does not rely on digital microcontrollers on each cell but to date has proven itself to be fail-safe and highly reliable. This has been proven in many road going electric vehicles which are demanding applications for a BMS.
Our cell modules are epoxy encapsulated against moisture and dust. This IS important because it is moisture and dust that will cause electrical problems in other systems down the track. Also important is that it does not rely on any connectors which can wriggle loose and fail. The EV Power BMS is a genuine one wire system where all the connections are soldered. It can monitor any number of cells in up to four banks and has provision for temperature monitoring also.
As well as high quality with gold plated terminal connectors it is reasonably priced. This is all you need in a BMS.