Backflow prevention mechanism of flat wire

Abstract

The utility model provides an anti-backflow mechanism of a flat wire, which comprises a flat wire main body and a leading-out wire main body, and the flat wire main body comprises insulating layers on the upper side and the lower side and a flat conductor clamped between the two insulating layers. The outgoing line main body comprises a fuse structure, and a first connector and a second connector at two ends of the fuse structure; the number of the flat conductors is multiple, the exposed windows are formed in different positions, corresponding to the different flat conductors, of the insulating layer on at least one side, and the exposed windows are used for exposing the flat conductors; the first connecting bodies are connected with the flat conductors in the flat wire main body through the exposed windows, the second connecting bodies are used for connecting external elements, the body of the flat conductor connected with each first connecting body is correspondingly provided with an anti-backflow hole, and the anti-backflow holes are close to the current output ends of the flat conductors and are of a through hole structure. Therefore, the current can only flow to the first connector corresponding to the anti-backflow hole instead of flowing to the position of the anti-backflow hole through the flat conductor.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic connection harnesses, and more specifically to a backflow prevention mechanism for a flat wire. Background Art

[0002] FFC cable Chinese translation: Flexible flat cable, the number and spacing of wires can be arbitrarily selected, making wiring more convenient, greatly reducing the size of electronic products, reducing production costs, and improving production efficiency. It is most suitable for data transmission cables between mobile parts and motherboards, between PCB boards and in miniaturized electrical equipment, and is widely used in electric vehicles.

[0003] The battery module of an electric vehicle is composed of thousands of cells connected in series by conductive sheets. At the same time, the positive and negative electrodes of each battery cell need to be connected with a large current to provide the power required for the car to drive. At the same time, the voltage, current and temperature of each cell need to be monitored, and balance control and adjustment should be performed when the cell power is unbalanced. The sampling harness of the relevant signals is usually a flat cable.

[0004] The patent closest to the prior art is announcement number: CN215644877U, which discloses a flat wire with a fuse, comprising a flat wire body and a lead wire body. The flat wire body serves as a transmission line and has a thicker flat conductor. The lead wire body is led out from an exposure window opened on the flat wire body and has a fuse structure. When an abnormally large current passes through the circuit, the fuse structure will blow to protect the electronic components from being damaged by the abnormal current.

[0005] However, the current enters from one end of the flat wire body and is output from the second connector of the lead wire body or the other end of the flat wire body. However, when a part of it is short-circuited or fails, it is easy to cause current backflow, thereby affecting the short-circuit damage of the flat wire body or the short-circuit damage of the connected external components.

[0006] In view of this, the utility model proposes a backflow prevention mechanism for a flat cable, so that the current can only flow in and out in a specified direction. Utility Model Content

[0007] The utility model aims to provide a backflow prevention mechanism for a flat wire, so that the current can only flow in and out in a specified direction.

[0008] A backflow prevention mechanism for a flat wire comprises a flat wire body 1 and a lead wire body 5, wherein the flat wire body 1 comprises an insulating layer on the upper and lower sides and a flat conductor sandwiched between the two insulating layers, and the lead wire body 5 comprises a fuse structure 51 and a first connector 52 and a second connector 55 at both ends of the fuse structure 51; the characteristic is that: there are multiple flat conductors, and the insulating layer on at least one side is provided with the exposure window 2 at different positions corresponding to different flat conductors, and the exposure window 2 is used to expose the flat conductor; the first connector 52 is connected to the flat conductor in the flat wire body 1 through the exposure window 2, and the second connector 55 is used to connect an external component, and a backflow prevention hole 11 is correspondingly provided at the body of each flat conductor connected to the first connector 52, and the backflow prevention hole 11 is close to the current output end of the flat conductor and is a through-hole structure, so that the current does not flow when it reaches the position of the backflow prevention hole 11 through the flat conductor, and can only flow to the first connector 52 corresponding to the backflow prevention hole 11.

[0009] In some embodiments, a plurality of rows of welding areas 53 are provided at the first connector 52, and each welding area 53 is provided with a plurality of welding holes 54. The solder penetrates into the flat conductor exposed by the corresponding exposure window 2 through the welding hole 54 of one of the welding areas 53 for welding, so that the non-welding ends of the lead wire body 5 are arranged neatly. The welding holes 54 can also gather and thicken the solder to increase the holding force of the solder.

[0010] Furthermore, each welding area 53 has at least three welding holes 54 .

[0011] Furthermore, there are at least three welding areas 53, and different welding areas 53 can be selected for welding.

[0012] Furthermore, the fuse structure 51 of the lead wire body 5 is a curved structure, which increases the resistance of the fuse structure 51. As the resistance increases, a constant current passes through the fuse structure 51, making it easier to blow.

[0013] Furthermore, the material of the insulating layer is polyurethane, which has the functions of high temperature resistance, insulation and pressure resistance.

[0014] Furthermore, the insulating layer further includes a reinforcement film, which covers both sides of the lead wire body 5 and extends above the insulating film and is bonded to the insulating film.

[0015] Furthermore, the outer surface of the reinforcing film is also provided with a wire body spray code 3, and each flat wire body 1 corresponds to a different wire body spray code 3 for marking the flat wire body 1, so that the required flat wire body 1 can be quickly selected.

[0016] In some embodiments, a plurality of temperature sensors 4 are connected to the flat wire body 1 to control the temperature of the flat wire body 1 .

[0017] Furthermore, the plurality of temperature sensors 4 are evenly spaced and arranged to ensure that the temperature sensors 4 are disposed at both ends of the flat wire body 1 .

[0018] Beneficial effects of the utility model: The utility model proposes a backflow prevention mechanism for a flat wire, comprising a flat wire body 1 and a lead wire body 5, wherein the flat wire body 1 comprises insulating layers on upper and lower sides and a flat conductor sandwiched between the two insulating layers, and the lead wire body 5 comprises a fuse structure 51 and a first connector 52 and a second connector 55 at both ends of the fuse structure 51; the flat conductors are multiple, and the insulating layer on at least one side is provided with the exposure windows 2 at different positions corresponding to different flat conductors, and the exposure windows 2 are used to expose the flat conductors; the first connector 52 is connected to the flat conductor in the flat wire body 1 through the exposure window 2, and the second connector 55 is used to connect external components, and a backflow prevention hole 11 is correspondingly provided at the body of the flat conductor connected to each first connector 52, and the backflow prevention hole 11 is close to the current output end of the flat conductor and is a through-hole structure, so that the current does not flow when it reaches the position of the backflow prevention hole 11 through the flat conductor, and can only flow to the first connector 52 corresponding to the backflow prevention hole 11. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the anti-backflow mechanism of the flat cable of the present application.

[0020] Figure 2 It is a structural schematic diagram of the exposed window of the anti-backflow mechanism of the flat wire of the present application.

[0021] Figure 3 This is a schematic structural diagram of the lead-out wire body of the anti-backflow mechanism of the flat wire of the present application.

[0022] Main component symbols

[0023] Flat wire body 1 Return hole 11 Expose window 2 Line body inkjet printing 3 Temperature Sensor 4 Lead wire body 5 Fuse structure 51 First connector 52 Welding area 53 Welding holes 54 The second connector 55

[0024] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] The following examples are described to assist the understanding of the present application, and the examples are not and should not be interpreted in any way as limiting the scope of protection of the present application.

[0026] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as separate functional units (which may include sub-units), but those skilled in the art will recognize that various components or portions thereof may be divided into separate components or may be integrated together (including within a single system or component).

[0027] At the same time, the connections between components or systems are not intended to be limited to direct connections, rather, the data between these components may be modified, reformatted, or otherwise changed by intermediate components. In addition, additional or fewer connections may be used. It should also be noted that the terms "coupled," "connected," or "input" should be understood to include direct connections, indirect connections through one or more intermediate devices, and wireless connections.

[0028] Embodiment 1:

[0029] like Figure 1 and Figure 3 As shown, a backflow prevention mechanism for a flat wire comprises a flat wire body 1 and a lead wire body 5, wherein the flat wire body 1 comprises insulating layers on upper and lower sides and a flat conductor sandwiched between the two insulating layers, and the lead wire body 5 comprises a fuse structure 51 and a first connector 52 and a second connector 55 at both ends of the fuse structure 51; the flat conductors are multiple, and the insulating layer on at least one side is provided with the exposure windows 2 at different positions corresponding to different flat conductors, and the exposure windows 2 are used to expose the flat conductors; the first connector 52 is connected to the flat conductor in the flat wire body 1 through the exposure window 2, and the second connector 55 is used to connect external components, and a backflow prevention hole 11 is correspondingly provided at the body of the flat conductor connected to each first connector 52, and the backflow prevention hole 11 is close to the current output end of the flat conductor and is a through-hole structure, so that the current does not flow when it reaches the position of the backflow prevention hole 11 through the flat conductor, and can only flow to the first connector 52 corresponding to the backflow prevention hole 11.

[0030] The material of the insulating layer is polyurethane, which has the functions of high temperature resistance, insulation and pressure resistance. The insulating layer also includes a reinforcement film, which covers both sides of the lead wire body 5 and extends to the top of the insulating film and is bonded to the insulating film. The outer surface of the reinforcement film is also provided with a wire body spray code 3. Each flat wire body 1 corresponds to a different wire body spray code 3, which is used to mark the flat wire body 1, so that the required flat wire body 1 can be quickly selected. A number of temperature sensors 4 are also connected to the flat wire body 1 to control the temperature of the flat wire body 1. The several temperature sensors 4 are evenly spaced and ensure that the two ends of the flat wire body 1 are provided with temperature sensors 4.

[0031] like Figure 2 and 3As shown, the fuse structure 51 of the lead wire body 5 is a curved structure, which increases the resistance of the fuse structure 51. Due to the increase in resistance, the fuse structure 51 passes a constant current and is easier to blow. A plurality of rows of welding areas 53 are provided at the first connector 52. There are at least three welding areas 53. Different welding areas 53 can be selected for welding. Each welding area 53 is provided with a plurality of welding holes 54. There are at least three welding holes 54 in each welding area 53. The corresponding welding area 53 is selected according to the position of the different exposure windows 2, so that the non-welding ends of the lead wire body 5 are arranged neatly. The welding holes 54 can also gather and thicken the solder to increase the holding force of the solder.

[0032] Beneficial effects of the utility model: The utility model proposes a backflow prevention mechanism for a flat wire, comprising a flat wire body 1 and a lead wire body 5, wherein the flat wire body 1 comprises insulating layers on upper and lower sides and a flat conductor sandwiched between the two insulating layers, and the lead wire body 5 comprises a fuse structure 51 and a first connector 52 and a second connector 55 at both ends of the fuse structure 51; the flat conductors are multiple, and the insulating layer on at least one side is provided with the exposure windows 2 at different positions corresponding to different flat conductors, and the exposure windows 2 are used to expose the flat conductors; the first connector 52 is connected to the flat conductor in the flat wire body 1 through the exposure window 2, and the second connector 55 is used to connect external components, and a backflow prevention hole 11 is correspondingly provided at the body of the flat conductor connected to each first connector 52, and the backflow prevention hole 11 is close to the current output end of the flat conductor and is a through-hole structure, so that the current does not flow when it reaches the position of the backflow prevention hole 11 through the flat conductor, and can only flow to the first connector 52 corresponding to the backflow prevention hole 11.

[0033] Although the present application has disclosed multiple aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art, and several modifications and improvements may be made without departing from the concept of the present application, all of which belong to the protection scope of the present application. The multiple aspects and embodiments disclosed in the present application are only for illustration and are not intended to limit the present application. The actual protection scope of the present application shall be subject to the claims.

Claims

1. A backflow prevention mechanism for a flat wire, comprising a flat wire body (1) and a lead wire body (5), wherein the flat wire body (1) comprises insulating layers on upper and lower sides and a flat conductor sandwiched between the two insulating layers, and the lead wire body (5) comprises a fuse structure (51) and a first connector (52) and a second connector (55) at both ends of the fuse structure (51); characterized in that: There are a plurality of flat conductors, and exposure windows (2) are provided at different positions on the insulating layer on at least one side corresponding to different flat conductors, and the exposure windows (2) are used to expose the flat conductors; the first connector (52) is connected to the flat conductor in the flat wire body (1) through the exposure window (2), and the second connector (55) is used to connect external components. A backflow prevention hole (11) is provided at the body of the flat conductor connected to each first connector (52), and the backflow prevention hole (11) is close to the current output end of the flat conductor and is a through-hole structure, so that the current does not flow when it reaches the position of the backflow prevention hole (11) through the flat conductor, and can only flow to the first connector (52) corresponding to the backflow prevention hole (11).

2. The backflow prevention mechanism of the flat cable according to claim 1, characterized in that: The first connector (52) is provided with a plurality of rows of welding areas (53), each welding area (53) being provided with a plurality of welding holes (54). Solder penetrates through the welding holes (54) of one of the welding areas (53) to the flat conductor exposed by the corresponding exposure window (2) for welding, so that the non-welding ends of the lead wire body (5) are arranged neatly. The welding holes (54) can also gather and thicken the solder to increase the holding force of the solder.

3. The backflow prevention mechanism of the flat cable according to claim 1, characterized in that: Each welding area (53) has at least three welding holes (54).

4. The backflow prevention mechanism of the flat cable according to claim 2, characterized in that: There are at least three welding areas (53), and different welding areas (53) can be selected for welding.

5. The backflow prevention mechanism of the flat cable according to claim 1, characterized in that: The fuse structure (51) of the lead wire body (5) is a curved structure, which increases the resistance of the fuse structure (51).

6. The backflow prevention mechanism of the flat cable according to claim 1, characterized in that: The material of the insulating layer is polyurethane.

7. The backflow prevention mechanism of the flat cable according to claim 1, characterized in that: The insulating layer also includes a reinforcement film, which covers both sides of the lead wire body (5) and extends above the insulating film and is bonded to the insulating film.

8. The backflow prevention mechanism of the flat cable according to claim 7, characterized in that: The outer surface of the reinforcing film is also provided with a wire body spray code (3), and each flat wire body (1) corresponds to a different wire body spray code (3) for marking the flat wire body (1), so that the required flat wire body (1) can be quickly selected.

9. The backflow prevention mechanism of the flat cable according to claim 1, characterized in that: The flat wire body (1) is also connected to a plurality of temperature sensors (4) for controlling the temperature of the flat wire body (1).

10. The backflow prevention mechanism of the flat cable according to claim 9, characterized in that: The plurality of temperature sensors (4) are evenly spaced and arranged to ensure that the two ends of the flat wire body (1) are provided with temperature sensors (4).

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