CN210378535U - FFC flexible flat wire with fusing protection function - Google Patents
FFC flexible flat wire with fusing protection function Download PDFInfo
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- CN210378535U CN210378535U CN201921228641.7U CN201921228641U CN210378535U CN 210378535 U CN210378535 U CN 210378535U CN 201921228641 U CN201921228641 U CN 201921228641U CN 210378535 U CN210378535 U CN 210378535U
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- fusing
- flexible flat
- fusing part
- protection function
- flat wire
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Abstract
The utility model discloses a flexible flat line of FFC with fusing protect function, it includes: the electric conductor is provided with a fusing part, and the area of the longitudinal section of the fusing part is smaller than that of the longitudinal sections of other parts except the fusing part in the electric conductor. The resistance value of the fusing part arranged on the electric conductor is relatively large, when the flowing current is overlarge, the fusing part can be fused, so that the electric conductor is broken and is not electrified any more, and the fusing protection function is achieved; when the current of the loop load exceeds the maximum load current of the fusing part in the conductor, the fusing part can be fused rapidly, so that the fusing protection function is achieved, and the loop is protected effectively. Especially the utility model discloses when being applied to new energy automobile lithium battery management system to can cut off the group battery of overheated out of control fast, thereby avoid the electron group phenomenon that the burning of starting a fire appears, with this protection new energy automobile lithium battery management system that can be better.
Description
The technical field is as follows:
the utility model relates to a cable product technical field refers in particular to a flexible flat line of FFC with fusing protect function.
Background art:
the FFC Flexible Flat wire (FFC) is a novel data Cable formed by laminating a PET insulating material and an extremely thin tinned Flat copper wire through a high-tech automatic equipment production line, and has the advantages of softness, random bending and folding, thin thickness, small volume, simple connection, convenient disassembly, easy solution to electromagnetic shielding (EMI) and the like
The FFC flexible flat wire can randomly select the number and the spacing of the wires, so that the connection is more convenient, the volume of an electronic product is greatly reduced, the production cost is reduced, the production efficiency is improved, and the FFC flexible flat wire is most suitable for being used as a data transmission cable between a moving part and a main board, between a PCB and in 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 conductors arranged in parallel in the insulator, wherein the conductors are in a strip shape with equal width, and the longitudinal section area of each position of the conductors is equal, so that the resistance value of each position of the whole conductor is equal, namely the conductor is difficult to realize local fusing, and the fuse protection function is not realized. 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.
In view of the above, the present inventors propose the following.
The utility model has the following contents:
an object of the utility model is to overcome prior art not enough, provide a flexible flat line of FFC with fusing protect function.
In order to solve the technical problem, the utility model discloses a following technical scheme: the FFC flexible flat wire with the fusing protection function comprises: the electric conductor is provided with a fusing part, and the area of the longitudinal section of the fusing part is smaller than that of the longitudinal sections of other parts except the fusing part in the electric conductor.
Furthermore, in the above technical solution, at least one fusing hole penetrating through the front and rear end surfaces of the fusing part is punched in the middle of the fusing part, and the area of the longitudinal section of the fusing part is reduced through the fusing hole.
Further, in the above technical solution, the shape of the fusing hole is circular.
Further, in the above technical solution, the shape of the fusing hole is a polygon.
Furthermore, in the above technical solution, at least one first fusing gap penetrating through the front and rear end surfaces of the fusing part is formed on one side edge of the fusing part through punching, and the area of the longitudinal section of the fusing part is reduced through the first fusing gap.
Furthermore, in the above technical solution, two side edges of the fusing part are respectively punched to form at least one second fusing gap and one third fusing gap which penetrate through the front and rear end faces and are symmetrical to each other, and the area of the longitudinal section of the fusing part is reduced through the second fusing gap and the third fusing gap.
Further, in the above technical solution, the electric conductor is a rectangular strip of aluminum foil or a rectangular strip of copper foil.
Further, in the above technical solution, the insulator includes a bottom film and an upper film, the bottom film and the upper film cover the lower surface and the upper surface of the conductor, respectively, and the bottom film and the upper film are integrally fixed together.
After the technical scheme is adopted, compared with the prior art, the utility model has following beneficial effect: the utility model discloses set up fusing portion in the electric conductor, and the area of this fusing portion longitudinal section is less than the area of the longitudinal section of other parts except fusing portion in the electric conductor to this resistance that makes this fusing portion can increase, when the electric current that flows through is too big, and the heat that this fusing portion produced is too big, leads to this fusing portion can fuse, makes the electric conductor open circuit and no longer circular telegram, and this reaches fusing protect function, particularly, the utility model discloses when using, when the electric current of return circuit load surpassed the maximum load electric current of fusing portion in the electric conductor, this fusing portion can fuse fast, with this reaching fusing protect function, effectual protection return circuit. Especially the utility model discloses when being applied to new energy automobile lithium battery management system, because the utility model discloses possess fusing protect function to the group battery that can fast cut off overheated out of control of energy to avoid the phenomenon that electronic component appears the burning of starting a fire, that is to say, the utility model discloses one safety protection has been increased to new energy automobile lithium battery management system, with this protection new energy automobile lithium battery management system that can be better, the order the utility model discloses extremely strong market competition has.
Description of the drawings:
FIG. 1 is a schematic structural view of a first structure of the present invention;
FIG. 2 is a schematic structural view of a second structure of the present invention;
FIG. 3 is a schematic structural diagram of a third structure of the present invention;
FIG. 4 is a schematic structural diagram of a fourth structure of the present invention;
fig. 5 is a perspective view of the present invention.
Description of reference numerals:
1 insulator 11 bottom film 12 top film
2 electric conductor 21 fusing part 22 fusing hole
23 first fuse cutout 24 second fuse cutout 25 third fuse cutout
The specific implementation mode is as follows:
the present invention will be further described with reference to the following specific embodiments and accompanying drawings.
Referring to fig. 1-5, an FFC flexible flat wire with fuse protection function is disclosed, which comprises: the insulated body 1 and several electric conductors 2 arranged in parallel in the insulated body 1, the electric conductor 2 has a fusing part 21, the area of the longitudinal section of the fusing part 21 is smaller than that of the other parts of the electric conductor 2 except the fusing part 21. The utility model discloses set up fusing portion 21 in electric conductor 2, and the area of this fusing portion 21 longitudinal section is less than the area of the longitudinal section of other parts except fusing portion 21 in electric conductor 2, so that the resistance value of this fusing portion 21 can increase, when the electric current that flows through is too big, the heat that this fusing portion 21 produced is too big, leads to this fusing portion 21 can fuse, makes electric conductor 2 open circuit and no longer circular telegram, so that reach fusing protect function, particularly, the utility model discloses when using, when the electric current of return circuit load surpassed fusing portion 21's maximum load electric current in electric conductor 2, this fusing portion 21 can fuse fast, so as to reach fusing protect function, effectual protection return circuit. Especially the utility model discloses when being applied to new energy automobile lithium battery management system, because the utility model discloses possess fusing protect function to the group battery that can fast cut off overheated out of control of energy to avoid the phenomenon that electronic component appears the burning of starting a fire, that is to say, the utility model discloses one safety protection has been increased to new energy automobile lithium battery management system, with this protection new energy automobile lithium battery management system that can be better, the order the utility model discloses extremely strong market competition has.
And according to a resistance calculation formula, R is rho L/S, wherein R is the resistance, rho is the resistivity, L is the length, and S is the cross-sectional area in the current direction. Therefore, when the material and the length are the same, the determining factor of the resistance is the size of the cross-sectional area in the current direction, and therefore, in this embodiment, the area of the longitudinal section (i.e., the cross-sectional area) of the fusing part 21 provided in the conductor 2 is smaller than the area of the longitudinal section of the other part of the conductor 2 except the fusing part 21, so that the resistance value of the fusing part 21 is larger than the resistance value of the other part of the conductor 2 except the fusing part 21.
The fusing part 21 may be provided in three ways:
the first mode is as follows: at least one fusing hole 22 penetrating through front and rear end surfaces of the fusing part 21 is punched in the middle of the fusing part 21, and the area of the longitudinal section of the fusing part 21 is reduced by the fusing hole 22, wherein, as shown in fig. 1, the fusing hole 22 is circular, or the fusing hole 22 is polygonal, for example, as shown in fig. 2, the fusing hole 22 is square.
The second mode is as follows: referring to fig. 3, at least one first fuse notch 23 penetrating through front and rear end surfaces of the fuse portion 21 is punched at one side edge of the fuse portion 21, and the area of the longitudinal section of the fuse portion 21 is reduced by the first fuse notch 23.
The third mode is as follows: as shown in fig. 4, at least one second fuse notch 24 and one third fuse notch 25 are punched on two side edges of the fuse portion 21, and the second fuse notch 24 and the third fuse notch 25 penetrate through the front and rear end faces of the fuse portion and are symmetrical to each other, and the area of the longitudinal section of the fuse portion 21 is reduced by the second fuse notch 24 and the third fuse notch 25.
The electric conductor 2 is a rectangular strip of aluminum foil or a rectangular strip of copper foil. The insulator 1 includes a bottom film 11 and an upper film 12, the bottom film 11 and the upper film 12 respectively cover the lower surface and the upper surface of the conductor 2, and the bottom film 11 and the upper film 12 are integrally fixed together. In fig. 1 to 4, the upper membrane 12 is turned upward for convenience of explanation of the internal structure of the present invention, and its actual structure is shown in fig. 5.
To sum up, the utility model discloses set up fusing portion 21 in electric conductor 2, and the area of this fusing portion 21 longitudinal section is less than the area of the longitudinal section of other parts except fusing portion 21 in electric conductor 2, so that the resistance value of this fusing portion 21 can increase, when the electric current that flows through is too big, the heat that this fusing portion 21 produced is too big, leads to this fusing portion 21 can fuse, makes electric conductor 2 open circuit and no longer circular telegram, so that reach fusing protect function, particularly speaking, the utility model discloses when using, when the electric current of return circuit load surpassed among electric conductor 2 the maximum load electric current of fusing portion 21, this fusing portion 21 can fuse fast, with this reaching fusing protect function, effectual protection circuit. Especially the utility model discloses when being applied to new energy automobile lithium battery management system, because the utility model discloses possess fusing protect function to the group battery that can fast cut off overheated out of control of energy to avoid the phenomenon that electronic component appears the burning of starting a fire, that is to say, the utility model discloses one safety protection has been increased to new energy automobile lithium battery management system, with this protection new energy automobile lithium battery management system that can be better, the order the utility model discloses extremely strong market competition has.
Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. An FFC flexible flat wire with fuse protection, comprising: insulator (1) and a plurality of electric conductors (2) arranged in parallel in this insulator (1), characterized in that:
the conductor (2) has a fused portion (21), and the area of the longitudinal section of the fused portion (21) is smaller than the area of the longitudinal section of the other portion of the conductor (2) except the fused portion (21).
2. The FFC flexible flat wire with fuse protection function as claimed in claim 1, wherein: the middle part of the fusing part (21) is punched with at least one fusing hole (22) penetrating through the front end surface and the rear end surface of the fusing part, and the area of the longitudinal section of the fusing part (21) is reduced through the fusing hole (22).
3. The FFC flexible flat wire with fuse protection function as claimed in claim 2, wherein: the shape of the fusing hole (22) is circular.
4. The FFC flexible flat wire with fuse protection function as claimed in claim 2, wherein: the shape of the fusing hole (22) is a polygon.
5. The FFC flexible flat wire with fuse protection function as claimed in claim 1, wherein: at least one first fusing gap (23) penetrating through the front end face and the rear end face of the fusing part (21) is formed in the edge of one side of the fusing part (21) in a die-cutting mode, and the area of the longitudinal section of the fusing part (21) is reduced through the first fusing gap (23).
6. The FFC flexible flat wire with fuse protection function as claimed in claim 1, wherein: the edge of two sides of the fusing part (21) is respectively punched to form at least one second fusing notch (24) and a third fusing notch (25) which penetrate through the front end face and the rear end face of the fusing part and are symmetrical to each other, and the area of the longitudinal section of the fusing part (21) is reduced through the second fusing notch (24) and the third fusing notch (25).
7. The FFC flexible flat wire with fuse protection function according to any one of claims 1-6, wherein: the electric conductor (2) is a rectangular aluminum foil strip or a rectangular copper foil strip.
8. The FFC flexible flat wire with fuse protection function according to any one of claims 1-6, wherein: the insulator (1) comprises a bottom film (11) and an upper film (12), the bottom film (11) and the upper film (12) are respectively covered on the lower surface and the upper surface of the conductor (2), and the bottom film (11) and the upper film (12) are integrally fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228641.7U CN210378535U (en) | 2019-07-31 | 2019-07-31 | FFC flexible flat wire with fusing protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228641.7U CN210378535U (en) | 2019-07-31 | 2019-07-31 | FFC flexible flat wire with fusing protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210378535U true CN210378535U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921228641.7U Active CN210378535U (en) | 2019-07-31 | 2019-07-31 | FFC flexible flat wire with fusing protection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN210378535U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113600720A (en) * | 2021-08-10 | 2021-11-05 | 珠海锐翔智能科技有限公司 | Flexible flat wire processing method and punching equipment |
| WO2022055179A1 (en) * | 2020-09-08 | 2022-03-17 | 주식회사 엘지에너지솔루션 | Film type cable having fuse line |
-
2019
- 2019-07-31 CN CN201921228641.7U patent/CN210378535U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022055179A1 (en) * | 2020-09-08 | 2022-03-17 | 주식회사 엘지에너지솔루션 | Film type cable having fuse line |
| EP4167252A4 (en) * | 2020-09-08 | 2023-11-22 | LG Energy Solution, Ltd. | Film type cable having fuse line |
| CN113600720A (en) * | 2021-08-10 | 2021-11-05 | 珠海锐翔智能科技有限公司 | Flexible flat wire processing method and punching equipment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221209 Address after: 523000 Building 2, No. 15, Wenming Road, Daning, Humen Town, Dongguan, Guangdong Patentee after: Dongguan Weikang Auto Electronics Co.,Ltd. Address before: 3 / F, building 3, 6 Qipan street, fuzhushan village, Liaobu Town, Dongguan City, Guangdong Province Patentee before: Dongguan Kangshuo Electronic Co.,Ltd. |