easyBMS is a battery management system for lithium-ion battery modules for solar energy installations. Currently, easyBMS integrates primarily with NMC batteries, both 8s and 12s types, and Sungrow Hybrid inverters. The battery management system consists of two parts: The BMS slaves and the BMS master together with a monitoring application.
The BMS slave has mainly two tasks: Balancing the cells of the battery systems and measuring cell voltages, temperatures and currents in order to monitor the battery health and the state of the system for safety.
The Control Box contains a Raspberry Pi and different auxillary devices in order to create a BMS master that controls all the BMS slaves. The box can feature a touch screen that shows an energy dashboard for the user.
The High Voltage Box contains high voltage relais in order to be able to cut off the battery from the system. The HV box is controlled by control lines from the Control Box.
You can use your favorite battery with up to 12 sequential cells. The battery should be connected to the HV box over fuses.
Below is a sample installation in a system with two solar roofs and one battery system, connected over an HV-Box and a Control-Box to a hybrid solar inverter.
