A BMS is a control circuit that manages the charging an discharging of cells in a battery pack. It monitors the battery’s temperature range as well as the State of Charge and State of Health of individual battery cells. It can protect the battery cells from damage by controlling the charging rate for the proper charging profile at either constant voltage, or constant current. The battery management system may also control a glycol cooling system . For Lithium Batteries It will sense if a cell is being charged over 4.2v and stop any current being applied to it. Also it will cut the power to the whole pack if it senses that any cell is dropping below 3V. A BMS is crucial for the safety of a lithium battery pack system. For proper state estimation the correlation between open circuit voltage and SoC is an important reference. An EKF can be used as a state estimator with a recursive least squares as an internal resistance identifier.
[[Battery Module]] – group of batteries with it’s own BMS system.
[[Centralized Battery Management System]]
[[Distributed Battery Management System]]
Cell Balancing
[[Lithium Battery Technology]]
[[Tasks of a BMS System]]
[[Spacecraft Thermal Control Systems]] – might use a BMS that has a temperature input and heater outputs for the batteries.
- benderHowDesignLithium2019
- BatteryElectricVehicle
- LiIonSubTech
- tongOnlineOptimizationBattery2015[^4]
- lithium-thionyl-chloride-battery-selection-whitepaper[^5]