BMS battery management system
Article directory
Preface
We have learned about BMS and its functional modules before. What is the relationship between these functional modules?
1. The relationship between the various functional modules of the BMS battery management system
Let's analyze this picture below. The hardware layer is used to sample the voltage, current, temperature and resistance values to the state estimation and prediction function. The core state of the battery is estimated through the data used. This section is the middle layer. Finally, there is the application layer, which performs balancing control on the battery based on the status and status parameters. The final communication and diagnostic function can send data for easy control.
2. Boundary and basic elements of BMS
Sensor elements: used to measure relevant information (voltage, temperature, etc.) inside the battery pack (to complete the adoption and measurement functions).
Controller elements: mainly make logical judgments and judgments on the information collected by the sensor elements or the information received from other peripheral systems. Algorithm calculations, information exchange with other peripheral systems, or control of actuator elements to perform work. (Middle layer)
Actuator element: mainly executes related actions based on the decisions and instructions of the controller element. (High-voltage relay, cooling water pump fan, etc.) (Application layer)
Electrical accessory elements: mainly for safety protection of battery packs. (fuse, msd) (application layer)