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

Overcurrent protection device and method of forming an overcurrent protection device

a protection device and overcurrent technology, applied in the direction of protective switch operating/releasing mechanism, switch with electrothermal opening, emergency contact, etc., can solve the problem of costly efforts to reduce the size of the devi

Inactive Publication Date: 2020-12-31
LITTELFUSE INC
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, devices that support high hold currents are typically large and are not suitable for applications that require small form factors, and efforts to reduce device size may be costly.

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
  • Overcurrent protection device and method of forming an overcurrent protection device
  • Overcurrent protection device and method of forming an overcurrent protection device
  • Overcurrent protection device and method of forming an overcurrent protection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018]An overcurrent protection device, or PPTC device, in accordance with the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which certain exemplary embodiments of the overcurrent protection device are presented. The overcurrent protection device may be embodied in many different forms and is not to be construed as being limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will convey certain exemplary aspects of the overcurrent protection device to those skilled in the art. In the drawings, like numbers refer to like elements throughout unless otherwise noted.

[0019]FIGS. 1A, 1B, and 2 illustrate an overcurrent protection device 100 in accordance with an exemplary embodiment of the present disclosure, with FIG. 1A showing the overcurrent protection device 100 in a normal condition, FIG. 1B showing the overcurrent protection device 100 in...

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
temperatureaaaaaaaaaa
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

An overcurrent protection device according to an embodiment of the present disclosure may include a first electrode disposed substantially parallel to a second electrode. A material may be disposed between the first electrode and the second electrode. A plurality of conductive material nodules may be disposed in the material between the first electrode and the second electrode, including a first conductive material nodule at least partially contacting an inner surface of the first electrode and a second conductive material nodule at least partially contacting an inner surface of the second electrode and the first conductive material nodule. In response to an overcurrent condition the material may be configured to expand, such that the contact between the first electrode, the first conductive material nodule, the second conductive material nodule, and the second electrode is at least partially interrupted.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS[0001]This application is a divisional of, and claims the benefit of priority to, U.S. patent application Ser. No. 15 / 801,545, filed Nov. 2, 2017, entitled “Overcurrent Protection Device and Method of Forming an Overcurrent Protection Device,” which application is incorporated herein by reference in its entirety.FIELD OF THE DISCLOSURE[0002]Embodiments of the present disclosure relate generally to the field of circuit protection devices, and more particularly to polymeric positive temperature coefficient (PPTC) devices.BACKGROUND OF THE DISCLOSURE[0003]Polymeric positive temperature coefficient (PPTC) devices are used to provide resettable overcurrent protection in many applications, e.g., consumer electronics and automotive applications. During an overcurrent condition, a PPTC device may rapidly increase in temperature, which in turn causes the resistance of the PPTC device to increase to effectively establish an open circuit and mitigate pot...

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
Patent Type & Authority Applications(United States)
IPC IPC(8): H01H77/04H01H71/08H01H69/00H01H71/14
CPCH01H71/14H01H77/04H01H69/00H01H71/08H01H2203/01
Inventor PINEDA, MARTIN G.FUENTES, SERGIOTSANG, CHUN-KWAN
Owner LITTELFUSE INC