Intelligent fuse for automobile low-voltage distribution box

The invention discloses an intelligent fuse for an automobile low-voltage distribution box, which comprises a diagnostic instrument, a diagnostic matching interface, a bus interface, a current sensor, a detection resistor, a temperature sensor, a turn-off/turn-on control module, an MOS (Metal Oxide Semiconductor) switching tube, a load and a power supply, the bus interface is connected with the current sensor, the temperature sensor and the turn-off/turn-on control module, the current sensor is connected with the detection resistor, the turn-off/turn-on control module is connected with the grid electrode of the MOS switch tube, one end of the detection resistor is connected with the positive electrode of a power supply, the other end of the detection resistor is connected with the drain electrode of the MOS switch tube, the source electrode of the MOS switch tube is connected with one end of the load, and the other end of the load is connected with the negative electrode of the power supply. According to the