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A high stability ptc thermal component

A technology with high stability and components, applied in the direction of electrical components, resistor parts, resistors, etc., to achieve the effect of meeting complex application conditions, large holding current, and diversified processing methods

Active Publication Date: 2021-07-09
SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, with the high-end built-in processing of mobile phones, the heat generated by the built-in hardware is much higher than that of feature phones. Therefore, when the mobile phone experiences complex temperature shocks, PTC will generate resistance and cause malfunction protection.

Method used

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  • A high stability ptc thermal component
  • A high stability ptc thermal component
  • A high stability ptc thermal component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The steps of preparing the conductive composite material and the PTC thermosensitive element are the same as those of the comparative example, but the conductive filler is replaced by a titanium carbide solid solution with a particle size of less than 10 μm, a volume resistivity of 42 μΩ.cm, and a thermal conductivity of 18W / (m.K ).

Embodiment 2

[0046] The steps of preparing the conductive composite material and the PTC thermosensitive element are the same as in the first example, but on the basis of the first example, the pure nickel electrode foil is replaced with a pure copper electrode foil, the resistivity is 1.7μΩ.cm, and the thermal conductivity is 380 W / (m.K);

Embodiment 3

[0048] The steps of preparing the conductive composite material and the PTC thermal element are the same as in the second embodiment, but on the basis of the second embodiment, the positive temperature coefficient chip size is punched into a single element piece of 2.4*36mm;

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PUM

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Abstract

The invention relates to a low-resistance, high-stability PTC heat-sensitive element, which includes components with resistance positive temperature effect and conductive metal pins. Among them, the structure of the positive temperature effect component is a PTC core material composed of an upper electrode foil, a lower electrode foil, and a stack of material layers with a positive temperature coefficient of resistance effect sandwiched between the upper and lower electrode foils, and is wrapped around the core material. The insulating material frame, the insulating semi-cured resin material covering both surfaces of the insulating material frame and the PTC electrode foil, and the terminal electrode foil covering the outermost surface of the semi-cured resin material, and the outermost terminal electrode foil is connected to the PTC core through the blind hole The electrode foil on the surface of the material is connected; the conductive metal pin is connected to the electrode foil on the outermost surface. The high-stability PTC thermosensitive element of the present invention has low resistance characteristics and high stability, and can meet complex charging and discharging applications of batteries.

Description

technical field [0001] The invention relates to a high-stability PTC heat-sensitive component, which has the characteristics of low resistance and high stability, can meet the requirements of various extreme environments and maintain low resistance after application, and prolongs the service life of the PTC. Background technique [0002] Conductive composite materials with a positive temperature coefficient of resistance can maintain an extremely low resistance value at normal temperatures, and have the characteristics of being sensitive to temperature changes, that is, when an overcurrent or overtemperature occurs in the circuit, its resistance will instantly increase to A high resistance value makes the circuit in an open circuit state to achieve the purpose of protecting circuit components. Therefore, a conductive composite material with a positive temperature coefficient of resistance can be connected to the circuit as a material for the current sensing element. Such ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/02H01C1/024H01C1/084H01C1/144
CPCH01C1/024H01C1/084H01C1/144H01C7/027
Inventor 方勇刘玉堂杨铨铨刘兵吴国臣
Owner SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO LTD
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