MG Energy Systems B.V. | Foeke Sjoerdswei 3 | 8914 BH Leeuwarden | The Netherlands
+31 (0)58 750 89 47 | [email protected] | www.mgenergysystems.eu
Innovation
in energy storage
4
GENERAL DESCRIPTION
High safety and flexible system configurations were the design principles during the development of
the RS series Lithium-Ion battery. A modular and compact design makes system integration more
flexible, especially in refit applications. Adding redundant BMS and a unique cell-to-cell propagation
protection takes safety to the next level. The fluid thermal management keeps the battery cells on
temperature to extend cycle life and to improve the peak power performance. These features make
this battery suitable for large energy storage applications as well as small peak power packs in hybrid
solutions.
4.1
Battery system components
MG Energy Systems Lithium-Ion battery system consists of the following components:
One or more MG RS battery modules;
One or more MG Master HV or MG Master LV battery management systems; Details of
these battery management controllers can be found in their separate description
documents;
Consult MG Energy Systems B.V. for compatibility of battery models with the MG Master LV
and MG Master HV.
4.2
Functional description
MG Energy Systems battery system philosophy is to have one master BMS, e.g. a MG Master HV, per
string of battery modules which communicates with one or more slave BMSs integrated in the
Lithium-Ion battery module(s). The slave BMSs are monitoring the battery cell parameters like cell
voltage, cell temperature, and humidity inside the enclosure. Besides monitoring, the slave BMS also
controls balancing of cells based on the input of the master BMS.
All these parameters are send to the MG Master HV via a dedicated CAN-bus which collects all the
data and monitors these parameters with different thresholds. When a parameter exceeds the
threshold this will first be communicated to the user via the, separated, auxiliary CAN-bus. If the
exceeded threshold stays, the master BMS has the possibility to disconnect the batteries from the
system by opening the main contactors.
Functional and safety features of the MG RS battery module are:
Modular design in combination with flexible rack design makes integration in small spaces
possible.
Robust enclosure with high IP rating.
Exhaust system with over-pressure mechanism, used to output toxic gasses to a safe area
during a thermal runaway of a battery cell. This avoids containment of gases within the
battery space and therefor lowers the systems complexity to limit the risks involved.
Cell level fluid thermal management (cooling/heating) to increase performance, safety, and
cycle life.
Redundant Battery Management System in each MG RS battery module to guarantee
maximum safety and stable operation.
Unique cell-to-cell and module-to-module propagation protection during a failure.
Each string of batteries has its own MG Master BMS for protection, control, and logging.
