In the Residential Energy Storage System, the energy storage battery only interacts with the energy storage variables on high voltage, and the variables pick up power from the AC grid to charge the battery pack; The transaction distribution of the device is sent to the AC grid.

Residential Energy Storage System communications. The battery management system is mainly related to the information interaction with the degeneration and energy storage power station scheduling system. On the one hand, the battery management system sends important status information to the variables to determine the interaction of high -voltage power; on the other hand, the battery management system sends the most comprehensive monitoring information to the scheduling system of the energy storage power station PCS.

The BMS of the electric vehicle has an energy switching relationship with the motor and the charger in high -voltage; in terms of communication, there is information interaction with the charger during the charging process. Information exchange.

The hardware of the energy storage management system generally adopts a two -layer or three -layer model, and the larger scale tends to the three -layer management system.

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The power battery management system has only one layer of centralized or two distributed formulas, and there will be no three layers. Small cars mainly use a layer of centralized battery management system. The two -layer distributed power battery management system is shown in the figure below.

From a functional point of view, the first and second layers of the energy storage battery management system are basically equivalent to the first layer of the power battery and the second layer of the main control module. The third layer of the energy storage battery management system is the increase in the increase of this to cope with the huge scale of energy storage batteries.