CN217562263U

CN217562263U - FFC flexible flat wire with fusing protection function

Info

Publication number: CN217562263U
Application number: CN202220974465.7U
Authority: CN
Inventors: 赵锡鹏
Original assignee: Chongqing Jinkang Sailisi New Energy Automobile Design Institute Co Ltd
Current assignee: Chongqing Jinkang Sailisi New Energy Automobile Design Institute Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-10-11
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses a flexible flat line of FFC with fusing protect function, flexible flat line middle part are equipped with the strip that copper or aluminium system made, and the strip is sealed through last membrane, lower membrane, goes up the membrane, the membrane is the insulator down, inlays on the strip to cover and has the inlay by silver or plumbous making, and the thickness of inlay is not less than the two-thirds of strip at least. By adopting the utility model, the inlay made of silver or lead is arranged on the strip, and by utilizing the characteristics of low melting point, high diffusivity and the like of silver or lead, when the inlay and the strip are at about 780 ℃, eutectic is formed and melted, so that the sectional area of the place is rapidly reduced, and the resistance is rapidly increased, thereby realizing the purpose of rapidly breaking the strip, and further realizing induced fusing to play the role of overload protection; the thicker the relative thickness of the inlay on the strip, the better the effect, and for cost reasons, the thickness of the inlay can be at least two thirds of the thickness of the whole strip, and the fusing effect of the inlay can be achieved.

Description

FFC flexible flat wire with fusing protection function

Technical Field

The utility model relates to a flexible flat wire, especially a flexible flat wire of FFC with fusing protect function.

Background

The flexible flat wire (FFC) is a flat copper wire with PET insulating material and extremely thin nickel plating, novel data cable that forms through the pressfitting of high-tech automation equipment production line, the flexible flat wire of FFC has the softness, bending folding at will, thickness is thin, small, simple connection, it is convenient to dismantle, advantages such as easy solution electromagnetic shield (EMI) FFC flexible flat wire can select wire figure and interval wantonly, it is more convenient to make the line connection, the volume of the electronic product that significantly reduces, reduce manufacturing cost, improve production efficiency, be most suitable for between removal part and the mainboard, the PCB board is to between the PCB board, use as the data transmission cable in the miniaturized electrical equipment. Common specifications are FFC flexible flat wires with various intervals, such as 0.5mm, 0.8mm, 1.0mm, 1.25mm, 1.27mm, 1.5mm, 2.0mm, 2.54mm and the like.

The FFC flexible flat wire in the prior art generally comprises an insulator and a plurality of electric conductors which are arranged in the insulator in parallel, wherein the electric conductors are in a strip shape with equal width, and the longitudinal section area of each position of the electric conductors is equal, so that the resistance value of each position of the whole electric conductors is equal, and the heating value of each position is also equal in short circuit or overload, namely, the electric conductors are difficult to realize local fusing, so that the electric conductors do not have a fusing protection function. Especially, when the FFC flexible flat wire is applied to a lithium battery management system of a new energy automobile, the FFC flexible flat wire does not have a fusing protection function, so that the battery pack out of control due to overheating cannot be cut off in time, one safety protection is omitted, and the lithium battery management system of the new energy automobile cannot be protected better.

Disclosure of Invention

The utility model aims to provide a: the FFC flexible flat wire with the fusing protection function can be timely fused when overheated.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

the utility model provides a flexible flat line of FFC with fusing protect function, flexible flat line middle part is equipped with the strip that copper or aluminium made, and the strip is sealed through upper membrane, lower membrane, and upper membrane, lower membrane are the insulator, inlays on the strip and covers the inlay that is made by silver or plumbous, and the thickness of inlay is no less than two-thirds of strip at least.

By adopting the technical scheme, the inlay made of silver or lead is arranged on the strip, and by utilizing the characteristics of silver or lead such as low melting point, high diffusivity and the like, when the inlay and the strip are at about 780 ℃, eutectic is formed and melted, so that the sectional area of the inlay and the strip is rapidly reduced, the resistance is rapidly increased, the purpose of rapidly disconnecting the strip is realized, and the induced fusing is realized to play a role in overload protection; the thicker the relative thickness of the inlay on the strip, the better the effect, and for cost reasons, the thickness of the inlay can be at least two thirds of the thickness of the whole strip, and the fusing effect of the inlay can be achieved.

Further, the inlay may be shaped to partially or completely cover the width direction of the strip. When the inlay is fused, a small area will be fused, so that the inlay may not completely cover the strip in the width direction.

Further, the inlay may be circular, polygonal, or irregular. The specific shape of the inlay is not limited and can be designed according to cost or existing consumables.

Further, the inlay may be embedded only on the upper or lower surface of the strip.

Further, the inlay may be embedded on both the upper and lower surfaces of the strip.

Further, the inlay may extend through the thickness of the entire strip. The inlay may serve as a connecting segment to connect two pieces of tape together.

Further, the belt material, the upper film and the lower film are fixed together in a hot pressing mode.

Furthermore, the upper film and the lower film are made of PET or PC. The insulating effect is good.

Furthermore, a plurality of belt materials are uniformly arranged in the flexible flat wire. The number of the strips is set according to requirements.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the inlay made of silver or lead is arranged on the strip, and by utilizing the characteristics of low melting point, high diffusivity and the like of the silver or lead, when the inlay and the strip are at about 780 ℃, eutectic is formed and melted, so that the sectional area of the inlay and the strip is rapidly reduced, the resistance is rapidly increased, the purpose of rapidly breaking the strip is realized, and the induced fusing is realized, so that the overload protection effect is realized; the thicker the relative thickness of the inlay on the strip, the better the effect, and for cost reasons, the thickness of the inlay can be at least two thirds of the thickness of the whole strip, and the fusing effect of the inlay can be achieved.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 is a schematic diagram of a first embodiment of an FFC flexible flat wire with a fuse protection function according to the present invention.

Fig. 2 is a schematic diagram of a second embodiment of the FFC flexible flat wire with fuse protection function according to the present invention.

Fig. 3 is a schematic diagram of a third embodiment of the FFC flexible flat wire with fuse protection function according to the present invention.

Fig. 4 is a schematic diagram of a fourth embodiment of the FFC flexible flat wire with fuse protection function according to the present invention.

Fig. 5 is a schematic diagram of a fifth embodiment of the FFC flexible flat wire with fuse protection function according to the present invention.

Fig. 6 is a schematic diagram of an embodiment six of the FFC flexible flat wire with fuse protection function according to the present invention.

Fig. 7 is a schematic diagram of a seventh embodiment of the FFC flexible flat wire with fuse protection according to the present invention.

Fig. 8 is a schematic diagram of an embodiment eight of the FFC flexible flat wire with fuse protection function according to the present invention.

Figure 9 shows a first construction of the inlay of the invention.

Figure 10 shows a second construction of the inlay of the present invention.

Figure 11 shows a third construction of the inlay of the invention.

Wherein the figures include the following reference numerals:

1. a strip of material; 2. coating a film; 3. film laying; 4. an inlay.

Detailed Description

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, the FFC flexible flat wire with the fusing protection function is provided with a strip 1 made of copper or aluminum in the middle, the strip 1 is sealed by an upper film 2 and a lower film 3, both the upper film 2 and the lower film 3 are insulators, an inlay 4 made of silver or lead is embedded on the strip 1, and the thickness of the inlay 4 is at least not less than two thirds of the thickness of the strip 1.

According to the technical scheme, the inlay 4 made of silver or lead is arranged on the strip 1, and by utilizing the characteristics of silver or lead such as low melting point and high diffusivity, when the inlay 4 and the strip 1 are at about 780 ℃, eutectic melting is formed, so that the sectional area at the place is rapidly reduced, the resistance is rapidly increased, the purpose of rapidly disconnecting the strip 1 is realized, and the induced fusing is realized to play a role in overload protection; the thicker the relative thickness of the inlay 4 on the strip 1, the better the effect, and for cost reasons, the thickness of the inlay 4 can be at least two thirds of the thickness of the whole strip 1, and the fusing effect of the inlay 4 can be achieved.

Further, the shape of the inlay 4 may partially or completely cover the width direction of the strip 1. When the inlay 4 is fused, a small area is fused, so that the inlay 4 may not completely cover the strip 1 in the width direction.

As shown in fig. 1-8, further, the inlay 4 may be circular, polygonal, or irregular. The specific shape of the inlay 4 is not limited and can be designed according to cost or existing consumables.

As shown in fig. 9, further, the inlay 4 may be embedded only on the upper surface or the lower surface of the strip 1.

As shown in fig. 10, further, the inlay 4 may be embedded on both the upper and lower surfaces of the strip 1.

As shown in fig. 11, further, the inlay 4 may extend through the entire thickness direction of the strip 1. The inlay 4 may serve as a connecting segment to connect two pieces of the strip 1 together.

Further, the strip 1, the upper film 2 and the lower film 3 are fixed together by means of hot pressing.

Further, the upper film 2 and the lower film 3 are made of PET or PC. The insulating effect is good.

Further, a plurality of strips 1 are uniformly arranged in the flexible flat wire. The number of strips 1 is set as desired.

The scope of the present invention is defined not by the above-described embodiments but by the appended claims and equivalents thereof.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The FFC flexible flat wire with the fusing protection function is characterized in that a strip (1) made of copper or aluminum is arranged in the middle of the flexible flat wire, the strip (1) is sealed through an upper film (2) and a lower film (3), the upper film (2) and the lower film (3) are insulators, an inlay (4) made of silver or lead is embedded on the strip (1), and the thickness of the inlay (4) is at least not less than two thirds of the thickness of the strip (1); the inlay (4) may be shaped to partially or completely cover the width direction of the strip (1).

2. The FFC flexible flat wire with fuse protection function as claimed in claim 1, wherein the inlay (4) can be round, polygonal or irregular.

3. The FFC flexible flat wire with fuse protection function as claimed in claim 1, wherein the inlay (4) can be embedded only on the upper surface or the lower surface of the strip (1).

4. The FFC flexible flat wire with fuse protection function as claimed in claim 1, wherein the inlay (4) can be embedded on the upper and lower surfaces of the strip (1) at the same time.

5. The FFC flexible flat wire with fuse protection function as claimed in claim 1, wherein the inlay (4) can penetrate through the entire thickness direction of the tape (1).

6. The FFC flexible flat wire with fuse protection function as claimed in claim 1, wherein the strip (1), the upper film (2) and the lower film (3) are fixed together by means of hot pressing.

7. The FFC flexible flat wire with the fusing protection function as claimed in claim 1, wherein the upper film (2) and the lower film (3) are made of PET or PC.

8. The FFC flexible flat wire with the fuse protection function as claimed in claim 1, wherein a plurality of the tapes (1) are uniformly arranged in the flexible flat wire.