Battery protection board active balanced circuit thinking.solar battery storage system Manufacturing

　　The system is mainly composed of the single battery protection board management circuit and the vehicle controller. The single battery management circuit is composed of a single battery detection unit and a single battery balancing charging unit. SOC, the balanced charging unit uses an anti -gratable transformer to replenish the battery from the battery pack to a lower battery with a lower -level SOC, thereby achieving the consistency of the SOC of each single battery within the control range.

　　The communication methods between each single battery management circuit use the CAN bus communication. The single battery management circuit and the vehicle controller are communicated through the CAN-USB bus adapter. The vehicle controller is connected to the CAN bus of the single battery management circuit through the USB-CAN bus adapter, and realizes the sending and receiving of the single battery management circuit information. By adopting the distributed structure of the CAN bus, the system connection is reduced to facilitate system installation and debugging.

　　The battery group management system is composed of the battery management circuit of N -section. As shown in Figure 3.2, it is the connection line diagram of the single battery management circuit and the single battery when N = 4.

　　The single battery protection board management circuit is used to communicate and connect with the CAN bus. The CAN bus consists of 4 signal lines. The GND_CAN is an external power interface line, CANL is the CAN bus L signal, CANH is the CAN bus H signal,+5VCAN Power -supply interface for the Canal module+5V power supply. ODD represents the odd number module, and EVEN represents the even module. The single battery management circuits each lead to connect the two lines with the single battery, respectively, so that the single battery management circuit can be disconnected from the single battery at any time.

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