Over-current protection device

Abstract

The invention discloses an over-current protection device, and relates to the electronic field. The over-current protection device comprises an iron core and a protection element, wherein a first protruding body is connected to one side of the iron core, a second protruding body is connected to the other side of the iron core, and a main coil is connected to the second protruding body. The protection element comprises an electrode plate, wherein the electrode plate is connected with a composite layer, the composite layer is connected with a viscose rayon layer, the size resistance of the viscose rayon layer ranges from 0.01ohm / cm to 0.02ohm / cm, and a certain distance exists between the two protruding bodies. In addition, by means of the protection element, the low-pressure-drop resistance is obtained, the effect of a current value can be accurately measured, no load effect can be produced, a circuit is protected against losses, the controllable range of the current is wide, the production efficiency of the protection element is low, the resistance value of the protection element is low, the performance of the protection element is poor, the electrode plate is connected with the composite layer, the composite layer is connected with the viscose rayon layer, the over-current protection device has an excellent resistance value and excellent resistance reproducibility, and meanwhile the manufacturing efficiency of the over-current protection element is high.

Description

technical field [0001] The invention relates to the field of electronics, in particular to an overcurrent protection device. Background technique [0002] In recent years, high-tech technology has advanced by leaps and bounds, especially in the field of microelectronics-related technology and process. Therefore, electronic products have already penetrated into every family. Two safety problems that often occur in electronic products are over-voltage and over-current conditions. Solve this The two problems are the protection of wider application of electronic products. The patent application number is CN200320113740.3, which solves the problem of over-dispersion of over-current protection devices, thereby increasing the efficiency of space use and reducing assembly costs, but it cannot be integrated with the load circuit Phase isolation will cause load effect and line loss, and the current controllable range is small; the production efficiency of protection components is low,...

AI Technical Summary

Problems solved by technology

[0002] In recent years, high-tech technology has advanced by leaps and bounds, especially in the field of microelectronics-related technology and process. Therefore, electronic products have already penetrated into every family. Two safety problems that often occur in electronic products are over-voltage and over-current conditions. Solve this The two problems are the protection of wider application of electronic products. The patent application number is CN200320113740.3, which solves the problem of over-dispersion of over-current protection devices, thereby increasing the efficiency of space use and reducing assembly costs, but it cannot be integrated with the load circuit Phase isolation will cause load effect and line loss, and the current controllable range is small; the production efficiency of protection components is low, and its resistance value and performance are poor

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