Unlock instant, AI-driven research and patent intelligence for your innovation.

High-reliability overcurrent protection element

A technology for protecting components and reliability, applied in the field of overcurrent protection components, can solve the problems that cannot meet the production and use of surface mount products, and achieve the effects of excellent long-term use stability, avoiding short circuit, and excellent weather resistance

Pending Publication Date: 2020-08-11
SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has certain limitations and cannot meet the production and use of surface mount products.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-reliability overcurrent protection element
  • High-reliability overcurrent protection element
  • High-reliability overcurrent protection element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a high-reliability overcurrent protection component includes:

[0027] The first and second metal nickel foils 31, 32; and,

[0028] A PTC material layer 2, the volume resistance value is 0.1Ω~10Ω-cm, the PTC material layer 2 is overlapped and arranged between the first and second metal nickel foils 31, 32 to form a PTC chip; and the PTC chip The surrounding area is covered by a barrier thermosetting coating 4;

[0029] The first and second metal electrodes 11 and 12 are drawn out on the two sides of the PTC chip.

[0030] The barrier thermosetting coating layer 4 of this embodiment is an epoxy resin thermosetting coating containing nano-montmorillonite, which is coated on the four sides of the PTC material layer, preferably the first and second metal foils 31, 32 cover all exposed parts of the PTC material layer.

[0031] The initial resistance value of the PTC material layer is 1-1000mΩ.

[0032] A high-reliability overcurrent protectio...

Embodiment 2

[0045] Others of this embodiment are the same as Embodiment 1, the first metal nickel foil 31 and the first metal electrode 11, the second metal nickel foil 32 directly as the second electrode, as figure 2 shown, including:

[0046] The first and second metal nickel foils 31, 32; and,

[0047] A PTC material layer 2, the volume resistance value is 0.1Ω~10Ω-cm, the PTC material layer 2 is overlapped and arranged between the first and second metal nickel foils 31, 32 to form a PTC chip; and the PTC chip The surrounding area is covered by a barrier thermosetting coating 4;

[0048] The first metal electrode 11 is welded to the first metal nickel foil 31 of the PTC chip.

[0049] The first metal nickel foil 31 is integrated with the first metal electrode 11 by reflow soldering, and connected with the second metal nickel foil 32 to form a conductive loop.

[0050] The overcurrent protection element of the present invention, through the barrier thermosetting coating layer, isola...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Volume resistanceaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-reliability overcurrent protection element, which comprises two metal nickel foils and a PTC material layer with a volume resistance value of 0.1 ohm-10 ohm.cm, whereinthe PTC material layer is arranged between the two metal nickel foils in an overlapping manner to form a PTC chip, the periphery of the PTC chip is coated with a barrier thermosetting coating layer,and metal electrodes are led out from the upper surface or the upper surface and the lower surface of the PTC chip.

Description

technical field [0001] The invention relates to a high-reliability overcurrent protection element, an overcurrent protection element with PTC conductive composite material, which has excellent long-term resistance weather resistance and resistance reproducibility, and is especially suitable for power supplies of mobile communication equipment and portable digital products protection of. Background technique [0002] Since the resistance of conductive composite materials with positive temperature coefficient (Positive Temperature Coefficient; PTC) characteristics is sensitive to temperature changes, it can be used as a material for current sensitive components, and has been widely used in current protection components or circuit components. . Positive temperature coefficient overcurrent protection components (PTC) based on polymer core materials have been widely used in communications, computers, automobiles, industrial control, household appliances and many other fields, an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01C7/02H01C7/13H01C1/02H01C1/144
CPCH01C1/02H01C1/144H01C7/02H01C7/027H01C7/13
Inventor 高道华夏坤张锐潘月秀方勇吴国臣
Owner SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO LTD