BMS system / BMS module
it is a system that manages the operation of a battery or energy storage battery based on lithium-ion cells. The system is essential for proper operation of any lithium battery.
The most important functions of the BMS system are:
- protection the battery from overcharging, which may lead to permanent damage to the battery or cause effects dangerous to the environment, e.g. fire or explosion.
- ensuring an even charge level of individual cells, balancing the entire battery.
These features extend battery life. They also contribute to more efficient use of battery's total capacity.
CONSTRUCTION AND FUNCTIONS OF THE BMS MODULE
Our proprietary BDMS system consists of master and slave modules.
The master is a module that manages the entire energy storage battery. It communicates with other modules via a separate communication bus. The master module communicates with any external master system (fleet management/control/monitoring/SCADA systems). It provides various communication interfaces, e.g. Modbus RTU (RS232/485), CAN, etc.
The slave module has a cell voltage measurement, temperature measurement and balancing system based on a DC/DC converter.
The Master module measures the value of the current flowing through the battery and the battery voltage. It acts as an intermediary between the energy storage system and the outside world, transferring a number of diagnostic and functional data to the master system.
The diagnostic software allows to read operating parameters and information about the current state of charge or life of the energy storage battery.
The Master module communicates with other modules using an opto-isolated communication bus and is equipped with the modbus RTU protocol.
The slave is a single management module, controlled by the master module, which also serves as link protection against failures.
The user can build an energy storage system that meets his requirements.
When the communication between the modules is lost, the slave module can continue active balancing to the last set voltage, go into passive balancing mode, or stop balancing.
Due to the use of slave modules, the system can be easily scalable. The internal communication interface allows for backward compatibility between modules.
BMS MODULE TECHNICAL SPECIFICATION
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