The utility model discloses a kind of RS485 charging control systems, including 485 controller, 485 controller includes power supply end+12V, ground terminal GND,
signal end A and
signal end B, the power supply end+12V of 485 controller is connected with the power supply end+12V of
lithium battery motor through network cable, the ground terminal GND of 485 controller is connected with the ground terminal GND of
lithium battery motor through network cable, the
signal end A of 485 controller is connected with the signal end A of
lithium battery motor through network cable, the signal end B of 485 controller is connected with the signal end B of
lithium battery motor through network cable.This one-to-many charging mode, single wire (network cable) can complete communication+power supply / charging mode, and multiple curtain motors are connected to master control device through a network cable and communicate the power of multiple curtain motors through network cable, and the master control carries RS485 communication protocol to monitor the power of curtain motor through network cable, when the power of certain curtain motor is less than charging threshold value,
communication control power shortage curtain motor starts charging, and hardware resources are saved.