FFC assembly integrated with fuse structure

Abstract

The utility model discloses an FFC assembly of an integrated fuse structure, which comprises two layers of insulating films, a plurality of FFC flat wires, a voltage acquisition module and a temperature acquisition module, the FFC flat wires, the voltage acquisition module and the temperature acquisition module are arranged between the two layers of insulating films, fuses are arranged on one or more FFC flat wires, the corresponding fuses on each FFC flat wire are mutually independent and are arranged at intervals, and the temperature acquisition module is connected with the voltage acquisition module. The fuse is pasted on the FFC in a surface pasting mode and is fixed in a welding mode, a punched hole is formed in the position, corresponding to the fuse, of the insulating film, the assembly can monitor the battery state and collect information, the module weight can be effectively reduced, and the cost can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, in particular to an FFC component with an integrated fuse structure. Background Art

[0002] FFC, or Flexible Flat Cable (FFC), is commonly used in electronic products. Currently, the most common FFC consists of two layers of insulating film and a conductive layer between them. When used in electronic products, no fuse is required. However, when FFC is applied to battery collection modules, the fuse must be addressed. The fuse will melt when the current exceeds a certain value to protect the module system.

[0003] Existing FFC component products have a fuse engraved on the PCB board to protect the circuit, which plays a protective role on the circuit. However, this method requires a PCB board to be transferred when used. Figure 1 As shown, such a product increases the material cost of the PCB board, and is prone to problems such as cold soldering, solder leakage, and insufficient soldering between the PCB board and the FFC flat wire. It is also easy for the fuse to burn out, causing the entire PCB to burn out. Utility Model Content

[0004] In order to solve the above problems, the present invention proposes an FFC component with an integrated fuse structure, which can monitor the battery status and collect information, and can effectively reduce the weight of the module and reduce the cost.

[0005] The utility model is realized by the following technical solutions:

[0006] An FFC component with an integrated fuse structure comprises two layers of insulating films and an FFC flat wire located between the two layers of insulating films, wherein at least one FFC flat wire is provided with a fuse.

[0007] Furthermore, the fuses correspondingly arranged on different FFC flat cables are independent of each other and arranged at intervals.

[0008] Furthermore, the fuse is arranged on the FFC flat wire in a surface mount manner and fixed by welding, and a punching hole is provided on the insulating film corresponding to the fuse.

[0009] Furthermore, the FFC component also includes an acquisition module.

[0010] Furthermore, the acquisition module includes a voltage acquisition module, and the voltage acquisition module includes a voltage acquisition metal sheet. The voltage acquisition metal sheet is connected to the FFC branch end flat wire set on the FFC flat wire, and the connection is glued.

[0011] Furthermore, the acquisition module includes a temperature acquisition module, and the temperature acquisition module includes one or both of an integrated NTC temperature sensor and an NTC temperature sensor.

[0012] Furthermore, the integrated NTC temperature sensor includes a temperature collection metal sheet, a PCB board, and a thermistor. The PCB board is electrically connected to the FFC branch end flat wire set on the FFC flat wire. The thermistor and the temperature collection metal sheet are both soldered on the PCB board, and the two are not conductive. The gap between the thermistor and the temperature collection metal sheet is filled with thermal conductive material.

[0013] Furthermore, the FFC branch-end flat wire is formed by cutting the FFC flat wire into branches and then bending them, and the corresponding FFC flat wire cutting positions are fixed with protective tape.

[0014] Furthermore, a punching hole is provided on the insulating film at a position corresponding to the NTC temperature sensor, and the NTC temperature sensor is welded to the FFC flat wire exposed through the punching hole.

[0015] Furthermore, the FFC component can be folded, and the folds can be fixed with tape or other means.

[0016] Furthermore, the FFC component is provided with valley fold lines, mountain fold lines, and cutting lines, and the FFC component is cut along the cutting lines and folded along the fold lines at the same time.

[0017] The beneficial effects of the present invention are:

[0018] (1) For circuit protection function, by directly setting the fuse on the FFC flat line, a PBC board can be omitted. This fuse structure is flexible in application, improves production efficiency, reduces product cost, and avoids the problem of burning the entire PCB due to false soldering, leaking soldering and insufficient soldering;

[0019] (2) The circuit protection structure of the surface-mount fuse reduces the overall size of the product. The fuse specifications can be selected according to the use requirements, and it can be surface-mounted only on the FFC where the fuse is required. The fuse structure is welded to the FFC line as a single part. Once the fuse burns out during use, it can be replaced and re-welded, which is conducive to optimizing the internal circuit design of the battery. The fuse is directly welded to the FFC flat wire, with a simple structure and easy installation and replacement;

[0020] (3) For the voltage collection function, the voltage collection metal sheet is connected to the battery through the collection component and monitors the battery voltage. The branch has a certain degree of swing flexibility to facilitate the connection between the voltage collection metal sheet and the collection component;

[0021] (4) For the temperature acquisition function, the utility model adopts two NTC sensor setting schemes, one is an integrated NTC temperature sensor, and the other is to directly weld the NTC temperature sensor to the conductor;

[0022] The integrated NTC temperature sensor includes a temperature collection metal sheet, a PCB board, and a thermistor. The temperature collection metal sheet transfers heat to the battery cell through the collection component, and then transfers heat to the thermistor through the thermal conductive material. The thermistor is electrically connected to the PCB, and the PCB board is electrically connected to the FFC flat wire to achieve temperature collection.

[0023] The FFC component conductor body welding NTC structure has the advantages of convenient assembly, flexible layout, and easy replacement;

[0024] (5) The FFC assembly can also be folded according to the actual usage scenario and then installed on the device. When the installation space is small, the FFC assembly can be cut and folded and fixed with tape or other means. The foldable FFC assembly has a small overall width and is suitable for use scenarios with small product installation space. It can effectively utilize the module space and further improve the assembly efficiency of the battery module collection assembly of the FFC structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the prior art;

[0026] Figure 2 A schematic diagram of the structure of an FFC component with an integrated fuse structure;

[0027] Figure 3 This is a schematic diagram of the structure of the FFC component of the surface mount fuse;

[0028] Figure 4 This is a schematic diagram of the punching position on the FFC component of the surface mount fuse;

[0029] Figure 5 It is a structural diagram of the voltage acquisition mechanism;

[0030] Figure 6 Schematic diagram of the folding FFC crease and cut line;

[0031] Figure 7 It is a schematic diagram of the folded FFC;

[0032] Figure numerals: 1. Insulating film, 2. FFC flat wire, 3. Fuse, 4. NTC temperature sensor, 5. Temperature collection metal sheet, 6. PCB board, 7. Voltage collection metal sheet, 8. FFC branch end flat wire, 9. Protective tape, 10. Valley fold line, 11. Mountain fold line, 12. Cutting line, 13. Thermistor, 14. Punching hole, 15. Surface mount pad. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention.

[0034] Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present application.

[0036] like Figure 2 As shown, an FFC component with an integrated fuse structure includes two layers of insulating film 1 and an FFC flat wire 2 as a conductor layer located between the two layers of insulating film 1, a voltage acquisition module, and a temperature acquisition module. This component can monitor the battery status and collect information, which can effectively reduce the weight of the module and reduce costs.

[0037] For the circuit protection function, the present technical solution sets a fuse 3 on one or more FFC flat wires 2. The purpose can be achieved by setting one fuse 3 on the same FFC flat wire 2. This fuse structure is flexible in application. By setting a fuse directly on the FFC flat wire, an adapter PBC board can be eliminated, thereby improving production efficiency and reducing product costs. At the same time, it avoids the problem of burning the entire PCB due to false soldering, leaking soldering and insufficient soldering.

[0038] like Figure 3 As shown, the FFC flat wires are parallel to each other, and the corresponding fuses 3 on different FFC flat wires are independent of each other and are spaced apart from each other, that is, a certain distance gap must be maintained between the fuses, so that a certain operating space can be left during maintenance and replacement, which is convenient for replacing welding fuses.

[0039] The circuit protection structure of the surface-mount fuse reduces the overall size of the product. Fuse specifications can be customized based on usage requirements, and the fuse is simply surface-mounted on the FFC where the fuse is required. The fuse is soldered to the FFC wire as a single component. If the fuse burns out during use, it can be replaced and re-soldered, facilitating optimization of the battery's internal circuit design. The fuse is directly soldered to the FFC flat wire, resulting in a simple structure and easy installation and replacement.

[0040] like Figure 4 As shown, since the FFC flat cable is wrapped in two layers of insulating film, a hole 14 can be punched in the FFC film during the FFC molding stage. After the FFC is formed, the FFC flat cable is then punched. The punching size is designed based on the pad size specified in the surface-mount component specification. A fuse 3 can be surface-mounted in the exposed pad location after the punching. After surface-mount soldering is complete, the fuse is glued to protect it from oxidation.

[0041] For the voltage acquisition function, the voltage acquisition structure in this technical solution is as follows: Figure 2 and Figure 5 As shown, the voltage collection module includes a voltage collection metal sheet 7. In this embodiment, the voltage collection metal sheet 7 is a nickel sheet. The voltage collection metal sheet 7 is connected to the FFC branch end flat wire 8 by connection methods including but not limited to welding and crimping. The connection points are glued to protect them from oxidation.

[0042] The FFC branch end flat wire 8 is formed by cutting the FFC flat wire 2 into branches, and then bending the branches. The bent parts are welded to the voltage collection metal sheet 7, and the corresponding branches of the FFC flat wire 2 are fixed with protective tape 9 to increase the strength of the branch cutting point. The voltage collection metal sheet 7 is connected to the battery through the collection component and monitors the battery voltage. The branch has a certain swing flexibility, which facilitates the connection of the voltage collection nickel sheet and the collection component.

[0043] During the assembly process, the FFC flat wire adapter takes up little space overall, the product circuit is simple and clear, the voltage acquisition module is easy to assemble, and the branches swing flexibly, which improves the practicality of the FFC component.

[0044] For the temperature acquisition function, this technical solution adopts two NTC sensor setting schemes for temperature acquisition, one is an integrated NTC temperature sensor, and the other is to directly weld the NTC sensor to the conductor. Both setting methods can exist at the same time or one of them can be selected.

[0045] Furthermore, the integrated NTC temperature sensor includes a temperature collection metal sheet 5, a PCB board 6, and a thermistor 13. In this embodiment, the temperature collection metal sheet 5 is a nickel sheet. The FFC branch end flat wire 8 is electrically connected to the PCB board 6. The FFC branch end flat wire 8 is formed by cutting a branch of the FFC flat wire 2, and then bending the branch. The bent portion is connected to the PCB board 6. The thermistor 13 and the temperature collection metal sheet 5 are both soldered to the PCB board 6, and the two are not conductive. The gap between the thermistor 13 and the temperature collection metal sheet 5 is filled with thermal conductive material. The corresponding FFC flat wire 2 branch is fixed with protective tape 9. The protective tape 9 is used to increase the strength of the branch cut, and the NTC collection metal sheet branch has a certain degree of swinging flexibility, which facilitates the connection of the nickel sheet and the collection component.

[0046] The temperature collection metal sheet 5 transfers heat to the battery cell through the collection component, and then transfers it to the thermistor 13 through the thermal conductive material. The thermistor 13 is electrically connected to the PCB board 6, and the PCB is electrically connected to the FFC flat wire to achieve temperature collection.

[0047] Furthermore, the FFC assembly features an NTC temperature sensor welded to the FFC conductor for temperature acquisition. During the FFC molding stage, holes are punched in the FFC film to expose the FFC conductor. After molding, the NTC is welded to the exposed FFC flat wire, directly monitoring the temperature around the installation point. This FFC assembly conductor-welded NTC structure offers advantages such as easy assembly, simple fabrication, flexible deployment, and convenient replacement, making it ideal for applications requiring only temperature monitoring.

[0048] Furthermore, when the installation space is small, the FFC component can be cut and folded, and the folds can be fixed with tape or other means before being installed on the device. The folds can be adjusted according to the actual usage scenario. In this embodiment, the folds are set as follows: Figure 6 As shown, the folds include a valley fold line 10, a mountain fold line 11, and a cut-off line 12 provided on the FFC component. The valley fold lines 10 and the mountain fold lines 11 are provided in parallel with each other, and two valley fold lines 10 can be located between two mountain fold lines 11. The cut-off line 12 is located on the surface of one end of the FFC flat wire 2 and is provided in parallel thereto, wherein the valley fold line 10 and the mountain fold line 11 close to the cut-off line are connected to one end of the cut-off line 12; Figure 7 As shown, the FFC component can be cut along the cutting line 12 and folded into a double layer along the fold line, saving space without affecting the performance. The mountain fold refers to a convex shape after folding along the fold line, and the valley fold refers to a concave shape after folding along the fold line.

[0049] The overall width of the foldable FFC component is small, which is suitable for use scenarios with small product installation space. It can effectively utilize the module space, further improving the assembly efficiency of the battery module collection component of the FFC structure and innovating the design scheme of the foldable FFC component.

[0050] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will also have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An FFC component with an integrated fuse structure, characterized by: It comprises two layers of insulating films (1) and an FFC flat wire (2) located between the two layers of insulating films (1), wherein at least one of the FFC flat wires (2) is provided with a fuse (3); The fuse (3) is arranged on the FFC flat wire (2) in a surface-mounted manner, and a punching hole (14) is provided on the insulating film (1) corresponding to the fuse (3); The FFC component further comprises a collection module, the collection module comprising a voltage collection module, the voltage collection module comprising a voltage collection metal sheet (7), and the voltage collection metal sheet (7) is connected to an FFC branch end flat wire (8) provided on the FFC flat wire (2).

2. The FFC assembly with an integrated fuse structure according to claim 1, characterized in that: The fuses (3) correspondingly arranged on different FFC flat wires (2) are independent of each other and arranged at intervals.

3. The FFC assembly with an integrated fuse structure according to claim 1 or 2, characterized in that: The fuse (3) and the FFC flat wire (2) are fixed by welding.

4. The FFC assembly with an integrated fuse structure according to claim 1, characterized in that: The connection between the voltage collection metal sheet (7) and the FFC branch end flat wire (8) provided on the FFC flat wire (2) is glued.

5. The FFC assembly with an integrated fuse structure according to claim 1, characterized in that: The acquisition module includes a temperature acquisition module, and the temperature acquisition module includes one or both of an integrated NTC temperature sensor and an NTC temperature sensor (4).

6. The FFC assembly with an integrated fuse structure according to claim 5, characterized in that: The integrated NTC temperature sensor comprises a temperature collection metal sheet (5), a PCB board (6), and a thermistor (13); the PCB board (6) is electrically connected to an FFC branch end flat wire (8) provided on the FFC flat wire (2); the thermistor (13) and the temperature collection metal sheet (5) are both soldered to the PCB board (6) and are not electrically connected; and a gap between the thermistor (13) and the temperature collection metal sheet (5) is filled with a thermally conductive material.

7. The FFC assembly with an integrated fuse structure according to claim 1 or 6, characterized in that: The FFC branch end flat wire (8) is formed by cutting the FFC flat wire (2) into branches and then bending them, and the corresponding FFC flat wire (2) cut portion is fixed with a protective tape (9).

8. The FFC assembly with an integrated fuse structure according to claim 6, characterized in that: A punched hole is provided on the insulating film (1) at a position corresponding to the NTC temperature sensor (4), and the NTC temperature sensor (4) is welded to the FFC flat wire (2) exposed from the punched hole.

9. The FFC assembly with an integrated fuse structure according to claim 1, characterized in that: The FFC component can be folded, and the creases can be fixed with tape or other means.

10. The FFC assembly with an integrated fuse structure according to claim 9, characterized in that: The FFC component is provided with a valley fold line (10), a mountain fold line (11), and a cutting line (12). The FFC component is cut along the cutting line (12) and folded along the fold lines at the same time.

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