Flexible flat cable and acquisition busbar

Abstract

The utility model provides a flexible flat cable and an acquisition busbar, and the flexible flat cable comprises a wire core layer which comprises a plurality of flat wire cores arranged at intervals, at least one flat wire core is provided with a fusing section, the flat wire core located in the fusing section is a fuse, the width of the fuse is smaller than that of the flat wire core, and the fuse is in a curve shape; the first insulating layer is arranged on one side of the wire core layer; and the second insulating layer is arranged on the other side of the wire core layer. According to the flexible flat cable, a longer fuse can be cut under the condition of the same flat cable core length, and when the flexible flat cable is pulled, the fuse has larger deformation allowance, especially larger elastic deformation allowance. When the fuse is subjected to an external force, the fuse can share an external tensile force to the insulating layer through proper deformation, so that the stress of the fuse is reduced, the risk of fuse breakage is reduced, and the fuse processed by the flexible flat cable has higher use safety.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to a flexible flat cable and a collection busbar. Background Art

[0002] At present, with the development of the new energy industry, energy storage facilities and new energy transportation equipment have gained a broader user base. New energy brings a good user experience to users, but the safety of battery cells is still the focus of users' attention. The main structure of the energy storage device includes battery components and integrated busbars. The integrated busbar is an integrated arrangement structure for power collection, signal collection and battery management within the energy storage device. It is one of the important structures for energy storage and use of electricity. The safety of the integrated busbar affects the overall safety of the energy storage device. Safety is not only a design requirement of the manufacturer, but also the core concern of users. When designing the integrated busbar, most manufacturers try to avoid circuit faults such as short circuits and leakage in the external circuit.

[0003] Overload and short circuit are serious circuit faults that can easily cause internal battery temperatures to rise rapidly, or even cause spontaneous combustion. Therefore, fuses can be used in integrated busbars to prevent rapid battery heating caused by circuit overload and short circuit.

[0004] After a section of the flat wire core is cut and processed, this section becomes the safety section and is used as a fuse. The width of the processed fuse is significantly smaller than the width of the flat wire core, but in actual use, it is easily broken by external forces. Utility Model Content

[0005] In order to solve the technical problem in the prior art that the cable is easily broken by external pulling, the utility model provides a flexible flat cable and a collection busbar.

[0006] One of the purposes of this utility model is achieved by the following technical solution:

[0007] A flexible flat cable, comprising:

[0008] The wire core layer includes a plurality of flat wire cores arranged at intervals, at least one of the flat wire cores has a fusible section, the flat wire core located in the fusible section is a fuse, the width of the fuse is smaller than the width of the flat wire core, and the fuse is curved;

[0009] A first insulating layer is provided on one side of the core layer;

[0010] The second insulating layer is arranged on the other side of the core layer.

[0011] Optionally, the fuse is located in an area covered by the fusing section.

[0012] Optionally, the fuse is arc-shaped, S-shaped or wavy-shaped.

[0013] Optionally, the length of the fuse is greater than the length of the fuse section.

[0014] Optionally, in the fusing section, two sides of the fuse are cutting areas.

[0015] Optionally, the fusing section is a copper section, an aluminum section or a tin section.

[0016] Optionally, the first insulating layer and the second insulating layer are polypropylene, polyethylene or polyester films.

[0017] Optionally, the flexible flat cable further includes a connecting terminal, wherein the connecting terminal includes an electrical connection plate and a connecting end connected to the electrical connection plate, and the connecting end is connected to an end portion of the flat wire core.

[0018] Another purpose of the present invention is achieved by the following technical solution:

[0019] A flexible flat cable, comprising:

[0020] The wire core layer includes a plurality of flat wire cores arranged at intervals, at least one of the flat wire cores having a fusible section, the flat wire core located in the fusible section being a fuse, the width of the fuse being smaller than the width of the flat wire core, and at least one side of the fuse having a half-moon shaped fusible notch;

[0021] A first insulating layer is provided on one side of the core layer;

[0022] The second insulating layer is arranged on the other side of the core layer.

[0023] Another purpose of the present invention is achieved by the following technical solution:

[0024] A collection busbar includes a carrier plate and the aforementioned flexible flat cable, wherein the flexible flat cable is arranged on the carrier plate.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] Flexible flat cables can be cut into longer fuses while maintaining the same flat core length. When pulled, they offer greater deformation tolerance, particularly greater elastic deformation. When subjected to external forces, the fuse deforms appropriately to distribute the force to the insulation layer, reducing the stress on the fuse and the risk of breakage. Fuses made with flexible flat cables are therefore much safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of the flexible flat cable of the present invention after the first insulating layer is removed;

[0028] Figure 2 This is a schematic diagram of an arc-shaped fuse in the flexible flat cable of the present invention;

[0029] Figure 3 This is a schematic diagram of an S-shaped fuse in the flexible flat cable of the present invention;

[0030] Figure 4 Schematic diagram of a fuse with a half-moon-shaped fuse notch in a flexible flat cable of the present invention.

[0031] Description of the accompanying drawings:

[0032] 1. Flat wire core; 11. Fuse section; 12. Fuse; 13. Half-moon shaped fuse notch;

[0033] 2. Second insulation layer. DETAILED DESCRIPTION

[0034] The following is a combination of the appended examples of the present application Figure 1 To the attached Figure 2 , clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.

[0035] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] The utility model provides a flexible flat cable, such as Figure 1 As shown, the flexible flat cable comprises a core layer, a first insulation layer, and a second insulation layer 2. Specifically, the core layer comprises multiple spaced-apart flat cores 1. At least one of the flat cores 1 has a fusible section 11. The flat core 1 within the fusible section 11 serves as a fuse 12. Fuse 12 is narrower than the flat core 1 and has a curved shape. The first insulation layer is positioned on one side of the core layer, while the second insulation layer 2 is positioned on the other side. The curved shape of fuse 12 allows the flexible flat cable to be cut into longer fuses 12 while maintaining the same length of flat core 1. This allows for greater deformation tolerance, particularly elastic deformation tolerance, when the flexible flat cable is pulled. When subjected to external force, fuse 12 can distribute the force to the insulation layer through appropriate deformation, reducing the stress on fuse 12 and the risk of fuse 12 breakage. This ensures that fuses 12 manufactured using the flexible flat cable are safer to use.

[0038] Furthermore, within the same area of the fuse section 11 , a longer fuse 12 generates greater heat. Compared to a straight fuse 12 , at the same melting temperature, the fuse 12 made of the flexible flat cable can be appropriately wider, providing greater safety.

[0039] In addition, the fuse 12 in the fusing section 11 of the present invention is easier to bend, and the fuse 12 has higher installation flexibility.

[0040] When using a circular knife to cut fuse 12, the fuse section 11 is first coated with a film to strengthen it, prevent breakage, movement, and deformation during processing. Hot melt film removal is performed before the insulation layer is applied. This creates a cutting area on both sides of the fuse 12 within the fuse section 11. Alternatively, a sample punching method can be used to process the flat wire core 1. The fuse 12 is located within the area covered by the fuse section 11, and regulations restrict the location of the fuse 12 to prevent it from connecting to adjacent fuses 12.

[0041] Of course, a cutting tool that moves up and down may also be used to cut out the curved fuse 12 .

[0042] The fuse 12 is in a curved shape. Specifically, Figure 1 、 Figure 2 and Figure 3As shown, the fuse 12 can be arc-shaped, S-shaped, or wavy. Preferably, the fuse 12 is S-shaped or wavy. The more bends in the arc, S-shaped, or wavy shape, the longer the overall length, the greater the deformation margin or elastic deformation, and the greater the external force applied to the first and second insulating layers 2, thereby improving the safety of the flexible flat cable.

[0043] The fuse 12 is bent and meandered in the fusible section 11 , so that the length of the fuse 12 is greater than the length of the fusible section 11 .

[0044] Regarding the fusing section 11 , specifically, the fusing section 11 is a copper section, an aluminum section, or a tin section.

[0045] The first insulating layer and the second insulating layer 2 are polypropylene, polyethylene or polyester films.

[0046] The flexible flat cable further includes a connecting terminal, which includes an electrical connection plate and a connecting end connected to the electrical connection plate, and the connecting end is connected to the end of the flat wire core 1 .

[0047] The present invention also provides a flexible flat cable, such as Figure 4 As shown, the flexible flat cable includes a core layer, a first insulating layer, and a second insulating layer 2. Specifically, the core layer comprises a plurality of spaced-apart flat cores 1. At least one of the flat cores 1 has a fuse section 11. The flat core 1 located within the fuse section 11 serves as a fuse 12. The width of the fuse 12 is smaller than that of the flat core 1, and at least one side of the fuse 12 has a half-moon-shaped fuse notch 13. The first insulating layer is disposed on one side of the core layer. The second insulating layer 2 is disposed on the other side of the core layer. In the flexible flat cable, the half-moon-shaped fuse notch 13 in the fuse section reduces the width of the fuse 12, thereby reducing its cross-sectional area and increasing its resistance. This allows the fuse 12 to discharge a large amount of power during high-power discharge, thereby causing it to blow. The fuse 12 can have a half-moon-shaped fuse notch 13 on one side or both sides.

[0048] The utility model further provides a collection busbar, which includes a bearing plate and the aforementioned flexible flat cable, wherein the flexible flat cable is arranged on the bearing plate.

[0049] The utility model further provides an energy storage battery, which includes a battery pack and the aforementioned collection busbar.

[0050] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A flexible flat cable, characterized in that: The flexible flat cable includes: The wire core layer includes a plurality of flat wire cores arranged at intervals, at least one of the flat wire cores has a fusible section, the flat wire core located in the fusible section is a fuse, the width of the fuse is smaller than the width of the flat wire core, and the fuse is curved; A first insulating layer is provided on one side of the core layer; The second insulating layer is arranged on the other side of the core layer.

2. The flexible flat cable according to claim 1, wherein: The fuse is located in the area covered by the fusible section.

3. The flexible flat cable according to claim 1, wherein: The fuse is in an arc shape, an S shape or a wave shape.

4. The flexible flat cable according to claim 1, wherein: The length of the fuse is greater than the length of the fusible section.

5. The flexible flat cable according to claim 1, wherein: In the fusing section, two sides of the fuse are cutting areas.

6. The flexible flat cable according to claim 1, wherein: The fusing section is a copper section, an aluminum section or a tin section.

7. The flexible flat cable according to claim 3, wherein: The first insulating layer and the second insulating layer are polypropylene, polyethylene or polyester films.

8. The flexible flat cable according to claim 1, wherein: The flexible flat cable further includes a connecting terminal, which includes an electrical connection plate and a connecting end connected to the electrical connection plate, and the connecting end is connected to an end of the flat wire core.

9. A flexible flat cable, characterized in that: The flexible flat cable includes: The wire core layer includes a plurality of flat wire cores arranged at intervals, at least one of the flat wire cores having a fusible section, the flat wire core located in the fusible section being a fuse, the width of the fuse being smaller than the width of the flat wire core, and at least one side of the fuse having a half-moon shaped fusible notch; A first insulating layer is provided on one side of the core layer; The second insulating layer is arranged on the other side of the core layer.

10. A collection busbar, characterized in that: The acquisition busbar includes a carrier plate and the flexible flat cable according to any one of claims 1 to 9, and the flexible flat cable is arranged on the carrier plate.

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