Intelligent fuse

Abstract

The invention discloses an intelligent fuse. The intelligent fuse comprises two electrodes, memory metal and a shell; the memory metal is spring-shaped, wherein one end of the memory metal is fixed onan electrode of the intelligent fuse in the shell, and the other end of the memory metal is not fixed in the shell and is in contact with the electrode at the other end of the shell; the temperatureof a circuit component can be directly transmitted to the memory metal spring through the electrode when an electric appliance works. After the technical scheme is adopted, when the intelligent fuse is electrified to work, the high temperature is transmitted to a memory metal spring through the electrode once the heat accumulation temperature generated by a resistor of an electrical and electronicelement reaches the memory metal deformation temperature, and the electrode in contact with the deformation end of the memory metal spring is disconnected with a power supply. The disconnected intelligent fuse stops electrifying an electric appliance circuit, and the temperature of the components of the electric appliance circuit begins to drop. When the temperature is reduced to the normal temperature, the intelligent fuse resumes working. Components in an electric appliance circuit are ensured to always work in a constant temperature state lower than memory metal metamorphosis temperature,thereby avoiding the factors of fire and explosion caused by overload of current of the electric appliance circuit and spontaneous combustion of heat accumulation temperature generated by resistance of internal circuit components higher than critical points of the circuit components.

Description

technical field [0001] The invention relates to a fuse, in particular to an electronic component which can automatically disconnect and connect circuit power according to load changes during operation. Background technique [0002] The fuse is an electronic component that connects the electrical circuit to the power supply to ensure the safety of the electrical circuit during work. As we all know, circuits with different purposes have different current load requirements, and fuses are usually used to control the current of various electrical circuits. If the circuit of the electrical appliance fails during work, causing the load current to be greater than the current that the circuit components of the electrical appliance can withstand, the fuse will blow and the circuit will stop working. The blown fuse in the circuit must be replaced before the electrical appliance can continue to work, which is inconvenient. At the same time, when electrical appliances work for a long t...

AI Technical Summary

Problems solved by technology

The service life of the fuse is extended, and at the same time, it solves the problem that the heat generated by the impedance of circuit components accumulates into high temperature after the existing electrical appliances are overloaded for a long time, causing qualitative changes in components to cause spontaneous combustion, casualties, and property losses.

Images