Polymer-based temperature-sensitive resistor with circuit protection function

Abstract

The invention relates to a polymer-based temperature-sensitive resistor with the circuit protection function. The circuit protector is characterized in that a polymer is used as a matrix and micro-nano particles are used as main conductive bodies. A micro-electric path is built by regulating an aggregation structure of the micro-nano particles in the matrix at an external field to serve as a circuit protector. Compared with the instantaneous power-off characteristic of the existing temperature-sensitive resistor, the temperature-sensitive resistor has a power-off protection function, so that the damage to inductive load equipment caused by sudden switching of the on-off state of the circuit is eliminated. Moreover, the sensitivity of the temperature-sensitive resistor can be designed basedon the external field regulation to meet requirements of different temperature intervals; and the polymer-based temperature-sensitive resistor has high applicability and stability. The whole temperature-sensitive resistor is simple to manufacture, adjustable in appearance and small in occupied space.

Description

【Technical field】 [0001] The invention relates to the technical field of electrical components, in particular to a polymer-based temperature-sensitive resistor with a circuit protection function. [0002] 【technical background】 [0003] Thermistor refers to a type of resistance whose resistance value changes with temperature. It is a type of sensitive element. According to the temperature coefficient, it is divided into positive temperature coefficient thermistor (PTC) and negative temperature coefficient thermistor (NTC) . It is widely used in various household and factory electrical appliances. It can ensure the operation of electrical appliances in a safe temperature in daily use and production, and protect the temperature of circuits and equipment. [0004] However, the existing protector based on temperature-sensitive design, such as patent number: CN208891118U, has at least the following problems: if the main body of the protection is an inductive load, an induced elec...

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Problems solved by technology

[0004] However, the existing protector based on temperature-sensitive design, such as patent number: CN208891118U, has at least the following problems: if the main body of the protection is an inductive load, an induced electromotive force will be generated when the high-temperature trigger circuit is disconnected instantaneously, and the superposition of the power supply will affect the electrical equipment. Especially precision equipment is damaged or even damaged

And the internal design is complex and bulky

For precision equipment, most of the existing power failure prevention solutions are to install UPS backup power system, but it will undoubtedly increase its cost and occupy a large space

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