Macromolecule positive temperature coefficient material assembly

Abstract

The invention discloses a macromolecule positive temperature coefficient material assembly. The macromolecule positive temperature coefficient material assembly at least comprises a macromolecule positive temperature coefficient material layer, two electrode groups, two conduction holes and a USB interface, wherein the two electrode groups are arranged on two surfaces of the macromolecule positivetemperature coefficient material layer, the two conduction holes are electrically connected to two same-polarity electrodes, each electrode group at least comprises a positive electrode and a negative electrode which are adjacent to each other and are not connected, and the rectangular projection area of the positive electrode on a first surface and the negative electrode on a second surface is not larger than 10%. The structure of the macromolecule positive temperature coefficient material assembly is designed to form a simple, safe and portable heat generation body, stable heat generation can be performed by an external power supply, and the macromolecule positive temperature coefficient material assembly is applied to heating industry or the field of circuit protection.

Description

technical field [0001] The invention relates to a polymer positive temperature coefficient component, in particular to a polymer positive temperature coefficient component applied to a self-limiting heating element and overcurrent protection. Background technique [0002] Polymeric Positive Temperature Coefficient (PPTC) composite materials are sensitive to temperature and current, and are currently widely used in circuits as overcurrent protection and self-regulating heating cables. [0003] Polymer positive temperature coefficient composite material has extremely low resistance value at room temperature (25°C). When applied in over-current protection, the circuit can operate according to the function required by the design, and when encountering occasional over-temperature (Over-temperature) or over-current (Over-current), the polymer positive temperature coefficient composite material The polymer microstructure produces a phase change. At this time, the conductive filler...

AI Technical Summary

Problems solved by technology

Although these two methods improve the problem of the traditional heating element, there are still problems that it is not easy to produce and requires a higher voltage (≧12V) to drive the heat due to the higher resistance.

Moreover, the heating element manufactured by the second patent is fibrous, so the mechanical strength is insufficient, and the connection with the power supply needs to be joined by a special method, which reduces the usability

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