Active Cell- and Battery Management

Active Charge Transfer & Dynamic Cell Balancing

Cell- and Batterymanagement


Battery Managment System (BMS)

Our battery management system organizes an optimal balancing strategy for the entire stack, controls the auxiliary components such as disconnectors or precharge and communicates with the energy management or external diagnostics. The autoconfig function allows the automatic configuration of important stack parameters without complex programming.

Active Charge Transfer (ACT)

The "Active Charger Transfer" technology actively "shovels" excess charge from one cell to another with virtually no loss. This weaker cells in the stack are actively supported and the entire battery can be optimally utilized. High balancing currents up to 5 A. Isolated communication to the string management controller (SMC) by CellCom at stack voltages up to 1,400 VDC. For all cell technologies up to 5 V / cell configurable.

Dynamic Cell Balancing (DCB)

The somewhat simpler "Dynamic Cell Balancing" offers the same outstanding protection of the cell as ACT, but the balancing is achieved more cost-effectively by dynamically deriving charge surpluses Balancing also at low cell SoC Cell monitoring from 0,2 V module voltage, also for UltraCaps suitable.

Battery- and UltraCap-Management

Any serialized Battery- or UltraCap string is limited by the performance of its weakest cell. Our ACT- (Active Charge Transfer) Balancing or the DCB (Dynamic Cell Balancing) both can precisley and in an early stage detect deviations in individual cells, modules or entire strings. The Cell Management efficiently supports and protects such weaker cells to ensure operation in the optimum range. This is one of the essential keys to safety and the best possible lifespan of an Energy Storage System.

Stercom offers two versions of Cell-Management and -Balancing to protect and balance all type common cell technologies, from UltraCaps to LiFePO to LiNMC cells:

  • The "Active Charger Transfer" technology actively "shovels" excessive charge from one cell to another with virtually no loss. Any weaker cell in the stack is actively supported by the ACT Electronics. This allows to use almost 100% of the available battery capacity and helps saving battery volume and costs.
  • The slightly simpler "Dynamic Cell Balancing" offers the same outstanding protection of the cell, but the balancing is achieved somewhat more cost-effective by "dynamically" deriving excess charge.

All cell parameters are configurable through our software (Stercom Diagnostic Studio).

Our super-imposed "Battery Management System" (BMS) organizes the optimal balancing strategy for the module or entire stack, controls the auxiliary components such as disconnectors or precharge and communicates with the energy management or external diagnostics. The autoconfig function allows the automatic configuration of important stack parameters without complex programming.

The precise voltage and temperature values ​​of the Stercom BMS as well as a highly accurancy charge measurement allow for exact SoC determination. Superior 2D and 3D battery models for many Cell Technologies not only provide reliable information on the aging status (SoH) of the entire battery, our patented differential measuring method also detects deviations in the SoH of individual cells during operation.

This data can be passed on to a higher-level energy management or charger, which enables a gentle and adapted charging strategy for every application.

Our comfortable "Stercom Diagnostic Studio" displays the current status of each cell up to the entire system. It allows the parameterization of the memory and includes an error and event log. All functions are available locally as well as remotely.