Detection mechanism with overload protection function, power supply device and power supply system

The invention belongs to the technical field of power supply equipment, and particularly relates to a detection mechanism with an overload protection function, a power supply device and a power supply device.The detection mechanism with the overload protection function comprises a supporting plate, a base is arranged on the supporting plate, a main induction part and a blocking part are arranged on the base, and the blocking part at least partially encloses a protection space; the main induction piece is located in the protection space; the bearing plate is parallel to the supporting plate, the side, facing the main induction part, of the bearing plate is connected with a connecting plate, the connecting plate is parallel to the bearing plate, an elastic supporting assembly is connected between the supporting plate and the bearing plate, an elastic buffering assembly is connected between the connecting plate and the bearing plate, and an auxiliary induction part is arranged on the connecting plate. According