Abstract: A rapid shutdown device capable of driving two MOSFETs connected in series through single drive signal, which includes a switch S1, a switch S2, a control IC and a drive circuit. The PV+ terminal of the photovoltaic module is connected to an output terminal OUT+ through the switch S1 and the switch S2 connected in series in sequence. The PV? terminal of the photovoltaic module is connected to an output terminal OUT?. The control IC, the switch S1 and the switch S2 are connected with the drive circuit respectively, and the two signal terminals of the control IC control the on-off of switch S1 and switch S2 through the drive circuit. The invention adopts two switches connected in series for on-off operation, greatly improving the shutoff reliability and safety of the photovoltaic power generation system.

Abstract: A PV module, which includes PV+ and PV? output ports. An output capacitor Cout is connected to PV+ or PV? port through an electric switch. One end of a power inductor L1 is connected to OUT?, and the other end is grounded. The power inductor L1 is connected with a resonant capacitor C1 and an impedance resistor R2 in parallel. One end of a blocking capacitor C2 is used as the PLC+ port, one end of a blocking capacitor C3 is used as the PLC? port, and signal sources are connected to OUT+ and OUT? in parallel and send “Keep Alive” signals based on SunSpec communication protocol. PLC+ port and PLC? port are connected to a signal coupling input port of a control IC, and the control IC controls the electric switch. When the signal is decoded and extracted, the electric switch will remain on, otherwise it will be off.

Abstract: A PV module, which includes PV+ and PV? output ports. An output capacitor Cout is connected to PV+ or PV? port through an electric switch. One end of a power inductor L1 is connected to OUT?, and the other end is grounded. The power inductor L1 is connected with a resonant capacitor C1 and an impedance resistor R2 in parallel. One end of a blocking capacitor C2 is used as the PLC+ port, one end of a blocking capacitor C3 is used as the PLC? port, and signal sources are connected to OUT+ and OUT? in parallel and send “Keep Alive” signals based on SunSpec communication protocol. PLC+ port and PLC? port are connected to a signal coupling input port of a control IC, and the control IC controls the electric switch. When the signal is decoded and extracted, the electric switch will remain on, otherwise it will be off.

Abstract: A rapid shutdown device capable of driving two MOSFETs connected in series through single drive signal, which includes a switch S1, a switch S2, a control IC and a drive circuit. The PV+ terminal of the photovoltaic module is connected to an output terminal OUT+ through the switch S1 and the switch S2 connected in series in sequence. The PV? terminal of the photovoltaic module is connected to an output terminal OUT?. The control IC, the switch S1 and the switch S2 are connected with the drive circuit respectively, and the two signal terminals of the control IC control the on-off of switch S1 and switch S2 through the drive circuit. The invention adopts two switches connected in series for on-off operation, greatly improving the shutoff reliability and safety of the photovoltaic power generation system.

Abstract: A connecting structure for a photovoltaic module auxiliary device, which is mainly applied to the photovoltaic module aluminum frame and facilitates the installation and removal of photovoltaic module auxiliary device. A metal fastener is clamped on the photovoltaic module aluminum frame and includes a bottom plate, a metal elastic pressing piece for pressing on the outside of the photovoltaic module aluminum frame is connected to the bottom plate, the bottom plate is positioned inside the photovoltaic module aluminum frame, and an accessory mounting plate parallel to the bottom plate is connected to the bottom plate through a transverse plate. Finally, a fixing structure for fixing the bottom plate is also connected to the photovoltaic module aluminum frame.