Battery pack transposition combination

How do battery pack configurations work?

Battery pack configurations can be designed with several options, some of which are determined by the chemistry, cell type, desired voltage and capacity, and dimensional space constraints. The basic explanation is how the battery cells are physically connected in series and parallel to achieve the desired power of the pack.

How many topologies can a battery pack have?

There are thousands of topologies that can be formed for a battery pack with 16 cells; however, most of them are not realistic for practical use. For example, when all cells are connected in series or all cell are connected in parallel can have limitations in terms of required levels of current and voltage levels.

How does a battery pack affect power transfer?

Maximum control over power transfer. Cells within a battery pack may have slightly different capacities, meaning they can store different amounts of energy. This capacity variability can lead to an uneven distribution of energy within the pack, resulting in some cells becoming fully charged or discharged before others.

What is a Li-ion battery pack?

The Li-ion battery pack is made up of cells that are connected in series and parallel to meet the voltage and power requirements of the EV system. Due to manufacturing irregularity and different operating conditions, each serially connected cell in the battery pack may get unequal voltage or state of charge (SoC).

How many cells are in a 96s3p battery pack?

The battery pack has a similar configuration as in the Chevrolet Bolt EV with 10 modules which has a total of 288 cells connected in 96s3p (3 parallel strings each having 96 cells in series). The cells connected in parallel are assumed to be identical and do not differ in their characteristics.

What is the balancing algorithm for a battery pack?

The balancing algorithm of the proposed topology for the battery pack (consists of N number of serially connected cells) is divided into Z modules M1, M2 … Mz. Each module may contain an equal number of k cells b1, b2 …. bk. Firstly, the controller reads the voltages of all cells.