Active balancer Smart LI-Ion/LiFePO4 14S Programmable with Bluetooth and application support

The Daly active balancer is used to equalize the voltages of individual cells working in one package.

New by Daly.

Although most BMSs are equipped with balancer systems that compensate for minor voltage differences between the cells, it often turns out that more powerful systems are needed, which, apart from compensating for uneven cell wear during battery operation, will be able to compensate for differences resulting from manufacturing discrepancies, different initial state of charge or, in the case of previously used cells, from their different history.

The task of the additional balancer is to transfer energy from the stronger cells to the weaker ones, so that they are less loaded, which results in a larger usable capacity of the package and a slower rate of its natural loss.

Such a balancer also makes it possible to build a package from cells that are not in the same state of charge.

There are BMS systems with a built-in active balancer on the market, but experience from operation shows that these are systems with a high failure rate.

Daly has solved this problem by developing a series of active balancers specially designed to work with BMS Daly. This means that both balancers, active external and passive in the BMS, can work simultaneously without interfering with each other.

Similarly to BMS Daly, balancers are produced in a standard version – without the possibility of viewing and setting parameters, and in the SMART version, with full monitoring and the possibility of setting parameters.

The active balancer complements the BMS. It doesn’t replace it in any way.

Nevertheless, the Daly balancer can be used as a separate device, e.g. for initial alignment of cells. The presence of BMS is not necessary for its operation.

The SMART version allows communication (viewing, reading data and changing parameters) through various channels:

• Bluetooth module – included – viewing and programming via mobile app (Android, IOS)
• UART- required UART 6-PIN cable>USB
• RS485 – RS485 cable required >-USB

The system is supplied ready to work with standard parameters, corresponding to typical cells available on the market.

Using the communication methods described above, these parameters can be changed by the package designer to suit specific requirements, e.g. the balancing current or the process start threshold can be changed.

The balancer is connected to the package, just like the BMS. It is required to make two parallel leads from each cell, one for the BMS, the other for the balancer.

It comes complete with a cable for connecting individual cells and, in the case of the SMART version, with a BT module.

A new version of the application for BMS Smart is used for programming and parameter monitoring.

NOTE: it is necessary to purchase a balancer for a certain number of cells connected in series. Eg. an 8S balancer is required for the LifePO4 8S pack. In the case of a balancer, the type of cells (LI-FePO4, LI-Ion, etc.) does not matter. Only the number of cells matters.