FDC flexible circuit board with S-shaped fuse
By using a flexible die-cutting process to cut S-shaped fuses onto flexible circuit boards, the problems of high cost and severe pollution associated with traditional etching processes are solved. This enables low-cost, environmentally friendly fuse production, improving the safety of circuit boards and the protection of batteries.
Patent Information
- Application Number
- CN202323353667.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2033-12-07
AI Technical Summary
The traditional chemical etching process for processing fuses on flexible circuit boards is costly and polluting, making it difficult to effectively reduce processing costs and achieve environmentally friendly production.
S-shaped fuses are cut into shape on flexible circuit boards using a flexible die-cutting process. The fuses are prepared by roller die-cutting, avoiding the use of etching solution and achieving green and environmentally friendly production.
It reduces the production cost of fuses, improves the safety of flexible circuit boards, reduces chemical pollution, simplifies the production process, and reduces the risk of battery module damage.
Smart Images
Figure CN223843155U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of circuit boards, and in particular to an FDC flexible circuit board with an S-type fuse. Background Technology
[0002] The explosive growth of new energy vehicles has driven the rapid development of power batteries in the new energy field. Flexible circuit boards (PCBs) are an important component of new energy power batteries. To prevent battery combustion or explosion and further improve battery safety, the industry has added a fusible current protection design (i.e., a fuse) to the PCB. However, the traditional method of processing fuses on PCBs involves chemical etching of copper foil to produce fuses of suitable size. This method requires environmentally friendly treatment of the etching solution before discharge, further increasing the processing cost of the fuses. Utility Model Content
[0003] The main purpose of this invention is to prepare an FDC flexible circuit board with an S-type fuse through a flexible die-cutting process, thereby reducing the processing cost of preparing the FDC flexible circuit board with an S-type fuse.
[0004] To achieve the above objectives, the present invention proposes an FDC flexible circuit board with an S-type fuse, comprising:
[0005] Connector components, voltage nickel strips, and S-type fuses;
[0006] The circuit board includes a first circuit segment and a second circuit segment, which are connected by the S-type fuse. The end of the first circuit segment away from the S-type fuse is connected to the connector component, and the end of the second circuit segment away from the S-type fuse is connected to the voltage nickel plate. The connector component is used to connect to the connector of the battery, and the voltage nickel plate is used to connect to the battery.
[0007] Optionally, the distance between any two opposite points in the width direction of the S-shaped fuse is equal.
[0008] Optionally, the width of the S-type fuse is W, where 0.1mm ≤ W ≤ 0.2mm.
[0009] Optionally, the length of the S-type fuse is L, where L ≥ 10 mm.
[0010] Optionally, the first circuit segment includes a first main circuit segment and a first connecting segment, and the second circuit segment includes a second main circuit segment and a second connecting segment. The two ends of the first connecting segment are respectively connected to the first main circuit segment and the S-type fuse, and the two ends of the second connecting segment are respectively connected to the second main circuit segment and the S-type fuse. The width of the first connecting segment and the second connecting segment gradually decreases towards the S-type fuse, and the sides of the first connecting segment and the second connecting segment are both arc-shaped. The two ends of the S-type fuse are respectively connected to the first connecting segment and the second connecting segment.
[0011] Optionally, one of the first circuit segments is provided in a raised configuration to form a clearance hole on the circuit board, and the first circuit segment is disposed opposite to an adjacent S-type fuse.
[0012] Optionally, the FDC flexible circuit board with S-type fuse further includes a temperature sensor, and the circuit board further includes a third circuit segment, one end of which is connected to the connector component, the temperature sensor is connected to the other end of the third circuit segment, and is connected to one of the voltage nickel plates.
[0013] Optionally, the FDC flexible circuit board with an S-type fuse further includes a reinforcing plate, which is installed on the side of the circuit board away from the connector components and connected to the connector components.
[0014] Optionally, the FDC flexible circuit board with S-type fuse further includes a first cover film and a second cover film, which are respectively attached to both sides of the circuit board.
[0015] Optionally, the FDC flexible circuit board with S-type fuse further includes a supporting circuit segment, which is spaced apart from the first circuit segment, the second circuit segment and the S-type fuse, and sandwiched between the first cover film and the second cover film.
[0016] The FDC flexible circuit board with an S-type fuse in this utility model includes connector components, a voltage nickel strip, an S-type fuse, and a circuit board. The circuit board includes a first circuit segment and a second circuit segment, which are connected by the S-type fuse. The end of the first circuit segment away from the S-type fuse is connected to the connector components, and the end of the second circuit segment away from the S-type fuse is connected to the voltage nickel strip. The connector components are used to connect to the battery connector, and the voltage nickel strip is used to connect to the battery. Therefore, when the battery current is overloaded, the S-type fuse will burn out, thereby improving the safety of the flexible circuit board and reducing the possibility of damage to the battery module. Furthermore, the FDC (Flexible Die-Cut Cable), namely the S-type fuse in this utility model, is formed by cutting the flexible circuit board using a roller die-cutting process. Compared with the existing technology of etching fuses with etching solution, the technical solution of this application has fewer production processes and no chemical pollutants are generated throughout the manufacturing process. The production process is green and environmentally friendly and does not require pollution treatment, thereby reducing the processing cost of producing FDC flexible circuit boards with S-type fuses. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of a structural embodiment of the FDC flexible circuit board with an S-type fuse of the present invention.
[0019] Figure 2 for Figure 1 Exploded view;
[0020] Figure 3 for Figure 1 A partial structural diagram;
[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0022] Explanation of icon numbers:
[0023] label name label name 11 circuit board 115 clearance hole 111 First circuit segment 12 S-type fuse 1111 First main road section 13 Connector components 1112 First connecting section 14 Reinforcing plate 112 Second circuit segment 15 Voltage Nickel Plate 1121 Second Main Road Section 16 Temperature sensor 1122 Second connecting section 17 First covering film 113 Third circuit segment 18 Second covering film 114 Support circuit segment
[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0029] Reference Figures 1 to 4 This utility model proposes an FDC flexible circuit board with an S-type fuse, comprising:
[0030] Connector component 13, voltage nickel strip 15, and S-type fuse 12;
[0031] The circuit board 11 includes a first circuit segment 111 and a second circuit segment 112. The first circuit segment 111 and the second circuit segment 112 are connected by the S-type fuse 12. One end of the first circuit segment 111 away from the S-type fuse 12 is connected to the connector component 13, and one end of the second circuit segment 112 away from the S-type fuse 12 is connected to the voltage nickel plate 15. The connector component 13 is used to connect to the connector of the battery, and the voltage nickel plate 15 is used to connect to the battery.
[0032] The FDC flexible circuit board with an S-type fuse in this utility model includes a connector component 13, a voltage nickel strip 15, an S-type fuse 12, and a circuit board. The circuit board 11 includes a first circuit segment 111 and a second circuit segment 112, which are connected by the S-type fuse 12. The end of the first circuit segment 111 away from the S-type fuse 12 is connected to the connector component 13, and the end of the second circuit segment 112 away from the S-type fuse 12 is connected to the voltage nickel strip 15. The connector component 13 is used to connect to the battery connector, and the voltage nickel strip 15 is used to connect to the battery. Therefore, when the battery current is overloaded, the S-type fuse will burn out, thereby improving the safety of the flexible circuit board and reducing the possibility of damage to the battery module. Furthermore, the FDC (Flexible Die-Cut Cable), namely the S-type fuse 12 in this utility model, is cut into shape on the flexible circuit board by a roller die-cutting process. Compared with the existing technology of etching fuses with etching solution, the technical solution of this application has fewer production processes and no chemical pollutants are generated throughout the manufacturing process. The production process is green and environmentally friendly and does not require pollution treatment, thereby reducing the processing cost of producing FDC flexible circuit boards with S-type fuses.
[0033] In this embodiment, the distance between any two opposite points in the width direction of the S-shaped fuse 12 is equal. That is, the S-shaped fuse 12 is of uniform width, which facilitates the production and processing of the fuse and thus reduces the manufacturing cost. Of course, in other embodiments, the S-shaped fuse 12 can also be composed of multiple fuse segments of different widths, wherein the narrower fuse segments are easier to melt in the event of an overload.
[0034] Specifically, the width of the S-type fuse 12 is W, where 0.1mm ≤ W ≤ 0.2mm. If W > 0.2mm, the S-type fuse is still difficult to blow when the battery current is overloaded, thus increasing the possibility of damage to the battery module. If W < 0.1mm, on the one hand, the battery will blow before reaching the predetermined current, thus affecting the normal operation of the battery; on the other hand, if the width is too small, the S-type fuse is also prone to breakage during the production and processing of flexible circuit boards, thus reducing the product yield. Setting the width of the S-type fuse between 0.1mm and 0.2mm allows the fuse to blow within 1 to 3 seconds after the current reaches the predetermined value of the battery, thereby reducing damage to the battery.
[0035] Furthermore, the length of the S-type fuse 12 is L, where L ≥ 10 mm. If the length L of the S-type fuse is less than 10 mm, the molten metal produced after the S-type fuse melts is likely to stick together, making it easy for the first circuit segment 111 and the second circuit segment 112 to remain connected, thereby reducing the protection effect on the battery.
[0036] In this embodiment, the first circuit segment 111 includes a first main circuit segment and a first connecting segment 1112, and the second circuit segment includes a second main circuit segment 1121 and a second connecting segment. The two ends of the first connecting segment 1112 are respectively connected to the first main circuit segment 1111 and the S-type fuse 12, and the two ends of the second connecting segment 1122 are respectively connected to the second main circuit segment 1121 and the S-type fuse 12. The widths of the first connecting segment 1112 and the second connecting segment 1122 gradually decrease towards the S-type fuse, and the sides of the first connecting segment 1112 and the second connecting segment 1122 are both arc-shaped. The two ends of the S-type fuse 12 are respectively connected to the first connecting segment 1112 and the second connecting segment 1122.
[0037] Understandably, the first circuit segment 111, the second circuit segment 112, and the S-type fuse are integrally cut using a circular cutter. Therefore, if the connection between the first circuit segment 111, the second circuit segment 112, and the S-type fuse is directly set, it is not convenient to cut the corners with a circular cutter. Furthermore, the size of the circular cutter is relative to the size of the S-type fuse, and a right-angled circular cutter is not convenient for production. Therefore, by setting the first connecting segment 1112 and the second connecting segment 1122 in an arc shape, the production and processing of the first circuit segment 111 and the second circuit segment 112 are facilitated, thereby reducing the difficulty of manufacturing the flexible circuit board and reducing the manufacturing cost of the flexible circuit board.
[0038] In this embodiment, one of the first circuit segments 111 is raised to form a clearance hole 115 on the circuit board, and the first circuit segment 111 is positioned opposite to an adjacent S-shaped fuse. The clearance hole 115 passes through the first cover film 17 and the second cover film 18, thereby facilitating the connection of the flexible circuit board to other objects. Furthermore, since the fuse is relatively thin, although part of the first circuit segment 111 is raised, when the raised first circuit segment 111 is positioned opposite the fuse, the space occupied by the raised first circuit segment 111 can be eliminated, thus not occupying the space of other circuit segments.
[0039] Furthermore, the FDC flexible circuit board with S-type fuse also includes a temperature sensor 16, and the circuit board 11 further includes a third circuit segment 113. One end of the third circuit segment 113 is connected to the connector component 13, and the other end of the temperature sensor 16 is connected to one of the voltage nickel plates 15. Two third circuit segments 113 are provided, respectively connected to the positive and negative terminals of the temperature sensor 16. The temperature sensor 16 is used to detect the temperature of the flexible circuit board and transmit the data through the third circuit segment 113 to the connector component 13 and then to the battery module.
[0040] Furthermore, the FDC flexible circuit board with S-shaped fuse also includes a reinforcing plate 14, which is installed on the side of the circuit board away from the connector component 13 and connected to the connector component 13. Understandably, the flexible circuit board is flexible overall, making it difficult to install the connector component 13. Therefore, by providing the reinforcing plate 14, the flatness of the mounting area of the connector component 13 is increased, thereby facilitating the installation and fixation of the connector component 13.
[0041] In this embodiment, the FDC flexible circuit board with an S-shaped fuse further includes a first cover film 17 and a second cover film 18, which are respectively attached to both sides of the circuit board. The first cover film 17 and the second cover film 18 serve to fix the first circuit segment 111, the second circuit segment 112, the third circuit segment 113, the fuse, and the supporting circuit segments, preventing them from connecting together and causing a short circuit in the flexible circuit board; at the same time, the first cover film 17 and the second cover film 18 also serve to provide insulation protection.
[0042] Furthermore, the FDC flexible circuit board with the S-shaped fuse also includes a supporting circuit segment 114. The supporting circuit segment 114 is spaced apart from the first circuit segment 111, the second circuit segment 112, and the S-shaped fuse, and is sandwiched between the first cover film 17 and the second cover film 18. In areas where the gaps between the circuit segments are relatively large within the flexible circuit board space, the structural strength of these areas is increased by providing the supporting circuit segment 114 in these areas.
[0043] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A flexible circuit board with an S-type fuse, characterized in that, include: Connector components (13), voltage nickel strips (15), and S-type fuses (12); The circuit board (11) includes a first circuit segment (111) and a second circuit segment (112). The first circuit segment (111) and the second circuit segment (112) are connected by the S-type fuse (12). The end of the first circuit segment (111) away from the S-type fuse (12) is connected to the connector component (13). The end of the second circuit segment (112) away from the S-type fuse (12) is connected to the voltage nickel plate (15). The connector component (13) is used to connect to the connector of the battery, and the voltage nickel plate (15) is used to connect to the battery.
2. The FDC flexible circuit board with an S-type fuse as described in claim 1, characterized in that, The distance between any two opposite points in the width direction of the S-type fuse (12) is equal.
3. The FDC flexible circuit board with an S-type fuse as described in claim 2, characterized in that, The width of the S-type fuse is W, where 0.1mm ≤ W ≤ 0.2mm.
4. The FDC flexible circuit board with an S-type fuse as described in claim 3, characterized in that, The length of the S-type fuse is L, where L ≥ 10 mm.
5. The FDC flexible circuit board with an S-type fuse as described in claim 1, characterized in that, The first circuit segment (111) includes a first main circuit segment (1111) and a first connecting segment (1112). The second circuit segment (112) includes a second main circuit segment (1121) and a second connecting segment (1122). The two ends of the first connecting segment (1112) are respectively connected to the first main circuit segment (1111) and the S-type fuse (12). The two ends of the second connecting segment (1122) are respectively connected to the second main circuit segment (1121) and the S-type fuse (12). The width of the first connecting segment (1112) and the second connecting segment (1122) gradually decreases towards the S-type fuse (12). The sides of the first connecting segment (1112) and the second connecting segment (1122) are both arc-shaped. The two ends of the S-type fuse (12) are respectively connected to the first connecting segment (1112) and the second connecting segment (1122).
6. The FDC flexible circuit board with an S-type fuse as described in claim 1, characterized in that, One of the first circuit segments (111) is provided in a raised manner to form a clearance hole (115) on the circuit board (11), and the first circuit segment (111) is provided opposite to the adjacent S-type fuse.
7. The FDC flexible circuit board with an S-type fuse as described in claim 1, characterized in that, The FDC flexible circuit board with S-type fuse also includes a temperature sensor (16), and the circuit board (11) also includes a third circuit segment (113), one end of which is connected to the connector component (13), the temperature sensor (16) is connected to the other end of the third circuit segment (113), and is connected to one of the voltage nickel plates (15).
8. The FDC flexible circuit board with an S-type fuse as described in claim 7, characterized in that, The FDC flexible circuit board with S-type fuse also includes a reinforcing plate (14), which is installed on the side of the circuit board (11) away from the connector component (13) and connected to the connector component (13).
9. The FDC flexible circuit board with an S-type fuse as described in claim 8, characterized in that, The FDC flexible circuit board with S-type fuse also includes a first cover film (17) and a second cover film (18), which are respectively attached to both sides of the circuit board (11).
10. The FDC flexible circuit board with an S-type fuse as described in claim 9, characterized in that, The FDC flexible circuit board with S-type fuse also includes a support circuit segment (114), which is spaced apart from the first circuit segment (111), the second circuit segment (112) and the S-type fuse, and sandwiched between the first cover film (17) and the second cover film (18).