Single-sided FPC (Flexible Printed Circuit) jumper connection structure

Abstract

The utility model discloses a single-sided FPC jumper wire connecting structure, which comprises a connector arranged on a single-sided FPC board and a plurality of wire body structures connected with the connector, at least one wire body structure is provided with two jumper wire breakpoint parts which are disconnected in a staggered manner, and a protective film of the single-sided FPC board is provided with two first windows corresponding to the two jumper wire breakpoint parts. The jumper board is arranged between the two jumper breakpoint parts, the conductive part for connecting the two jumper breakpoint parts is arranged on the jumper board, and the two jumper breakpoint parts are connected and conducted through the conductive part, so that jumper connection between a line body structure on the single-sided FPC board and the connector is realized; the single-sided FPC board achieves the purpose of jumper connection by bridging and conducting the two jumper breakpoint parts through the jumper board, thereby avoiding the adoption of a double-sided wiring mode of a double-sided board FPC, reducing the cost and working procedures for manufacturing the FPC, enabling the single-sided FPC board to achieve the function of the double-sided board FPC, and improving the use performance of a product.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible circuit boards, in particular to a single-sided FPC jumper connection structure. Background Art

[0002] With the development of information electronic products, FPC (FPC generally refers to flexible circuit board) is a widely used type of circuit board products, especially it has the characteristics of lightness, freedom of bending, winding, low voltage, low consumption, low power, etc. Through embedded circuit design, it can embed a large number of compact components in a limited space. The automotive battery module on the market uses FPC line row to replace the traditional wiring harness connection method to achieve the purpose of collecting battery module voltage, temperature and other information.

[0003] The existing FPC line row is provided with a connector and multiple sampling lines. The connector is connected to the multiple sampling lines through multiple connecting terminals to realize circuit conduction, and multiple collection pieces connected to the multiple sampling lines are provided on both sides of the FPC. Multiple connecting terminals are arranged in sequence on the connector. Usually, the connecting terminals are connected to the sampling lines one by one. Since some collection pieces are arranged staggered with the sampling lines, the battery module needs jumper connection when using the FPC line row. The FPC line row can be divided into single-sided FPC and double-sided FPC, and the single-sided FPC cannot realize jumper connection. Compared with the single-sided FPC, the double-sided FPC has an additional via structure, which can connect the lines on both sides to form a conductive path. Therefore, for the need for jumper connection, the existing practice is to use the double-sided wiring method of the double-sided FPC to realize the jumper connection, but the manufacturing process of the double-sided FPC is complicated, the circuit design is complicated, and the production cost is greatly increased. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem in the prior art that the double-sided wiring method of the double-sided FPC is used to realize the jumper connection, the manufacturing process is complicated, and the production cost is increased.

[0005] In order to solve the above technical problems, the utility model provides a single-sided FPC jumper connection structure, including a single-sided FPC board, a connector arranged on the single-sided FPC board, and a plurality of line body structures connected to the connector, the single-sided FPC board having a line body structure on one side covered with a protective film, at least one of the line body structures is provided with two jumper breakpoints that are offset and disconnected, the protective film correspondingly has two first windows that expose the two jumper breakpoints, and also includes a jumper board connected between the two jumper breakpoints, the jumper board is provided with a conductive part connecting the two jumper breakpoints, so that the two jumper breakpoints are connected and conductive through the conductive part.

[0006] As a preferred solution, the jumper board and the single-sided FPC board are arranged in a stacked structure, and the conductive part is connected to the two jumper breakpoints at the two first windows by welding or gluing.

[0007] As a preferred solution, the conductive part includes a plurality of gold finger pieces spaced apart on the jumper board along the length direction of the jumper board, the plurality of gold finger pieces are electrically connected to each other, and the two jumper breakpoint parts are welded to two of the gold finger pieces.

[0008] As a preferred solution, the gold finger sheet or the jumper breakpoint portion is coated with a solder paste structure, and at least one soldering hole is provided on the gold finger sheet.

[0009] As a preferred solution, the jumper board is a jumper FPC board with a flexible structure, and the jumper FPC board is packaged with connection circuits that are sequentially connected to a plurality of gold finger pieces.

[0010] As a preferred solution, the jumper FPC board has a covering film on one side of the connecting circuit, and the covering film has multiple second windows corresponding to the second windows exposing multiple gold finger pieces, at least two of the second windows are arranged opposite to the two first windows, and the first windows and the second windows are respectively in the shape of strips.

[0011] As a preferred solution, the jumper breakpoint portion includes a jumper pad arranged in the first window, and a glue layer is coated on the welding area between the jumper pad and the gold finger piece to achieve sealing coverage.

[0012] As a preferred solution, the jumper board is an insulating board with a hard structure, and the conductive part is a conductive sheet or a conductive wire extended on the jumper board, and the conductive sheet or the conductive wire extends and connects between two jumper breakpoints.

[0013] As a preferred solution, multiple collecting plates extending outward are provided on both sides of the single-sided FPC board, one end of the multiple wire structures are respectively connected to the multiple terminals of the connector, and the other ends of the multiple wire structures are respectively connected to the multiple collecting plates.

[0014] As a preferred solution, the multiple line body structures include a first line body intermittently arranged on the single-sided FPC board, and a second line body continuously and uninterruptedly arranged on the single-sided FPC board, the first line body is composed of two transfer lines staggered on the single-sided FPC board, and two jumper breakpoints are respectively arranged at the breakpoint positions of the two transfer lines.

[0015] As a preferred solution, a buffer groove is formed between the acquisition sheet and the single-sided FPC board, and the acquisition sheet is provided with a connecting portion connected to the side of the single-sided FPC board and accommodated in the buffer groove, and the connecting portion divides the buffer groove into adjacent open groove areas and closed groove areas.

[0016] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0017] 1. In the single-sided FPC jumper connection structure provided by the utility model, the line body structure that needs to be connected with the connector jumper is designed with two jumper breakpoints, and two first windows exposing the two jumper breakpoints are opened on the protective film of the single-sided FPC board, so that it is convenient to connect the two jumper breakpoints, and a jumper board is set between the two jumper breakpoints, and the conductive part on the jumper board is connected to the two jumper breakpoints to achieve conduction, so that the jumper connection between the line body structure on the single-sided FPC board and the connector is realized. The single-sided FPC board adopting this technical solution realizes the purpose of jumper connection by bridging the two jumper breakpoints through the jumper board, thereby avoiding the double-sided wiring method of the double-sided board FPC, reducing the cost and process of making the FPC, so that the single-sided FPC board can achieve the function of the double-sided board FPC and improve the product performance.

[0018] 2. In the single-sided FPC jumper connection structure provided by the utility model, the conductive part includes a plurality of gold finger pieces arranged on the jumper board at intervals along the length direction of the jumper board, and the plurality of gold finger pieces are interconnected through the connecting lines on the jumper FPC board. The plurality of gold finger pieces arranged in this way can adapt to the connection requirements of different lengths between two jumper breakpoints. It is only necessary to weld the two jumper breakpoints with the corresponding two gold finger pieces, so that the two dislocated and disconnected jumper breakpoints can be connected through the gold finger pieces on the jumper board, thereby realizing the jumper connection between the circuit on the single-sided FPC board and the connector.

[0019] 3. In the single-sided FPC jumper connection structure provided by the utility model, the jumper FPC board is welded to the single-sided FPC board according to the jumper board being a jumper FPC board with a flexible structure. Specifically, the gold finger piece of the jumper FPC board is connected and conducted with the jumper breakpoint part on the single-sided FPC board through a welding process. In this way, the jumper connection between the circuit on the single-sided FPC board and the connector is realized, which reduces the cost and simplifies the process. This jumper FPC board has the advantages of light weight, thin thickness, good bending property, not easy to produce wrinkles, simple and convenient wiring, etc. It is safe and reliable to use, can better meet the jumper connection use of various single-sided FPC board products, and is suitable for large-scale batch production requirements of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A structural schematic diagram of a single-sided FPC jumper connection structure provided for the utility model;

[0022] Figure 2 A partially enlarged structural schematic diagram of a single-sided FPC board provided for the utility model;

[0023] Figure 3 A schematic diagram of the laminated structure of a single-sided FPC jumper connection structure provided by the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the conductive part of the utility model on the jumper board;

[0025] Figure 5 The utility model is a schematic diagram of another structure of the conductive part on the jumper board.

[0026] Description of the drawings: 1. Single-sided FPC board; 11. First window; 2. Jumper board; 3. Connector; 4. Line structure; 5. Jumper breakpoint; 6. Conductive part; 61. Gold finger piece; 62. Solder hole; 63. Conductive piece; 7. Collection piece; 71. Connection part; 72. Buffer slot; 8. Solder paste structure. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Example

[0031] The utility model provides Figure 1-5 A single-sided FPC jumper connection structure is shown, comprising a single-sided FPC board 1, a connector 3 arranged on the single-sided FPC board 1, and a plurality of line structures 4 connected to the connector 3. The single-sided FPC board 1 is provided with a side of the line structure 4 covered with a protective film, and the protective film can better protect the substrate from being exposed to the air to avoid oxidation of the substrate. In order to meet the jumper connection requirements of the single-sided FPC, at least one of the line structures 4 is provided with two jumper breakpoints 5 that are staggered and disconnected, and the protective film is provided with two first windows 11 corresponding to the two jumper breakpoints 5. It also includes a jumper board 2 connected between the two jumper breakpoints 5, and the jumper board 2 is provided with a conductive part 6 connecting the two jumper breakpoints 5, so that the two jumper breakpoints 5 are connected and conductive through the conductive part 6.

[0032] In the above embodiment, the line body structure 4 on the single-sided FPC that needs to be connected to the connector 3 by a jumper is designed with two jumper breakpoints 5, and two first windows 11 are opened on the protective film to facilitate the connection of the two jumper breakpoints 5. A jumper board 2 is set between the two jumper breakpoints 5, and the conductive part 6 on the jumper board 2 is connected to the two jumper breakpoints 5 to achieve conduction, thereby realizing the jumper connection between the line body structure 4 on the single-sided FPC board and the connector 3. The single-sided FPC board adopting this technical solution realizes the purpose of jumper connection by bridging the two jumper breakpoints 5 through the jumper board 2, thereby avoiding the double-sided wiring method of the double-sided board FPC, reducing the cost and process of making the FPC, so that the single-sided FPC board can achieve the function of the double-sided board FPC and improve the product performance.

[0033] Combine the following Figure 1-5 The specific settings of the jumper board and the conductive part are explained in detail:

[0034] The jumper board 2 and the single-sided FPC board 1 are arranged in a stacked structure, and the jumper board 2 covers the positions of the two first windows 11, so that the conductive part 6 is connected to the two jumper breakpoints 5 by welding at the two first windows 11. Of course, the connection between the conductive part 6 and the two jumper breakpoints 5 can also be achieved by gluing. This stacked layout can achieve the integration of jumper circuit functions under the premise of ensuring the high-density wiring, lightness, and flexible bending characteristics of the single-sided FPC.

[0035] As a preferred embodiment, the conductive part 6 includes a plurality of gold finger pieces 61 arranged at intervals on the jumper board 2 along the length direction of the jumper board 2, and the plurality of gold finger pieces 61 are electrically connected to each other. The plurality of gold finger pieces 61 arranged and designed in this way can adapt to the connection requirements of different lengths between the two jumper breakpoint parts 5. It is only necessary to weld the two jumper breakpoint parts 5 with the corresponding two gold finger pieces 61. Specifically, a connection circuit of the plurality of gold finger pieces 61 connected in series is provided on the jumper board 2, so that the two jumper breakpoint parts 5 that are misaligned and disconnected are connected through the gold finger pieces 61 on the jumper board 2, so that the jumper connection between the line structure 4 and the connector 3 is realized on the single-sided FPC board 1.

[0036] For further optimization, refer to Figure 4 The jumper board 2 is a jumper FPC board with a flexible structure, and a connection circuit that connects multiple gold finger pieces 61 in sequence is encapsulated on the jumper FPC board, that is, the multiple gold finger pieces 61 are interconnected through the connection circuit on the jumper FPC board, wherein a covering film is affixed to one side of the jumper FPC board where the connection circuit is provided, and the functions of the covering film and the protective film are the same, both of which protect the FPC substrate from being exposed to the air, and the covering film is correspondingly provided with multiple second windows that expose multiple gold finger pieces 61, and at least two of the second windows are arranged opposite to the two first windows 11, and the first window 11 and the second window are respectively in the shape of strips, so that the gold finger piece 61 and the jumper breakpoint portion 5 are welded at the corresponding window opening position. It can be seen from the above structure that this jumper board 2 adopts a flexible FPC board design, and the jumper FPC board is welded to the single-sided FPC board. Specifically, the gold finger piece 61 of the jumper FPC board is connected and conductive with the jumper breakpoint part 5 on the single-sided FPC board through a welding process, thereby realizing the jumper connection between the circuit on the single-sided FPC board and the connector, reducing costs and simplifying the process. This jumper FPC board has the advantages of light weight, thin thickness, good bendability, not easy to wrinkle, simple and convenient wiring, etc. It is safe and reliable to use, can better meet the jumper connection use of various single-sided FPC board products, and is suitable for large-scale mass production requirements of products.

[0037] like Figure 2As shown, the jumper breakpoint portion 5 includes a jumper pad arranged in the first window 11. The jumper pad is designed to be a square structure that matches the gold finger piece 61 to ensure sufficient contact area. Since the single-sided FPC board 1 and the jumper FPC board are both made of copper substrate, the jumper pad and the gold finger piece 61 are also made of metal copper. The bonding of the same metal is better, which improves the electrical contact performance. In this embodiment, the jumper breakpoint portion 5 on the single-sided FPC board 1 and the gold finger piece 61 on the jumper FPC board are preferably welded by a fusion welding process. Therefore, it is necessary to apply a solder paste structure 8 on the gold finger piece 61 or the jumper breakpoint portion 5, and on the gold finger piece At least one solder hole 62 is provided on 61. During the soldering process, the jumper FPC board is attached to the single-sided FPC board 1, so that the solder paste structure 8 can pass through the solder hole 62 and form a firm solder joint, that is, the solder paste structure 8 enters the upper side surface facing away from the gold finger piece 61, thereby increasing the contact surface and increasing the welding strength and the connection stability. When the temperature rises, the solder paste structure 8 is caused to melt and contact with the jumper pad and the gold finger piece 61 to form a reliable soldering connection. At the same time, the solder paste structure 8 as a flux also helps to remove oxides and provides wetting and diffusion effects to ensure the quality and reliability of soldering, thereby better realizing the soldering between the single-sided FPC board 1 and the gold finger piece 61. Since some metal will be exposed when the jumper pad and the gold finger piece 61 are welded at the window position, a glue layer is coated on the welding area between the jumper pad and the gold finger piece 61 to achieve sealing coverage. This setting is to cover all the exposed metal parts in the welding area with glue. The glue can form a continuous sealing glue film in the welding area to prevent external moisture, dust, bacteria, etc. from entering the window position opened in the single-sided FPC board and the jumper FPC board, thereby playing a sealing role.

[0038] As another alternative to the above conductive portion, refer to Figure 5 The jumper board 2 is an insulating board with a hard structure, and the insulating board can be a plastic board or a resin board. The conductive part 6 is a conductive sheet 63 or a conductive wire fixedly set on the jumper board 2. The conductive sheet 63 or the conductive wire extends to connect the two jumper breakpoints 5, and can be connected by welding. The conductive sheet or the conductive wire extends along the length direction of the jumper board 2 for a set distance. This structural setting directly connects the two jumper breakpoints through the conductive sheet or the conductive wire, and can also realize the jumper connection between the line structure 4 on the single-sided FPC board and the connector 3. Those skilled in the art can make a choice of the specific structure of the conductive part according to the above description, and other equivalent embodiments will not be described one by one here.

[0039] In this embodiment, the two sides of the single-sided FPC board 1 are provided with a plurality of collection pieces 7 extending outward, one end of the plurality of wire structures 4 is respectively connected to the plurality of terminals of the connector 3, and the other end of the plurality of wire structures 4 is respectively connected to the plurality of collection pieces 7 ( Figure 1 The wire structure 4 in the figure is mainly for the convenience of displaying the jumper connection mode, so the two ends of the wire structure are not specifically extended to display. In fact, the two ends of the wire structure should be extended to connect the acquisition sheet and the connector). Multiple acquisition sheets 7 are connected to the battery module. The voltage information of the battery module can be obtained through multiple acquisition sheets 7. The acquisition sheet 7 is connected to the connector 3 through the wire structure 4, so as to achieve the purpose of real-time acquisition and monitoring of the voltage information of the battery module by FPC. In this embodiment, reference Figure 1 It can be seen that the multiple line structures 4 can be divided into multiple first line bodies continuously and uninterruptedly arranged on the single-sided FPC board, and at least one second line body intermittently arranged on the single-sided FPC board, and the second line body needs to be connected by a jumper board 2 to achieve jumper connection.

[0040] One end of the collection piece 7 is connected to one side of the single-sided FPC board 1, and the other end thereof is welded with a sampling terminal for connecting to the battery module. A buffer groove 72 is formed between the collection piece 7 and the single-sided FPC board 1. The collection piece 7 is provided with a connecting portion 71 connected to the side of the single-sided FPC board 1 and accommodated in the buffer groove 72. The connecting portion 71 separates the buffer groove 72 into adjacent open groove areas and closed groove areas. The buffer groove 72 can play a deformation buffering role for the collection piece 7 under stress, increase the deformation amount, and have a good force buffering effect, so as to prevent the collection piece 7 from being easily pulled off the solder joint or torn under the force of expansion and deformation of the battery module, thereby improving the service life and performance of the product.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A single-sided FPC jumper connection structure, comprising a single-sided FPC board (1), a connector (3) arranged on the single-sided FPC board (1), and a plurality of line structures (4) connected to the connector (3), wherein one side of the single-sided FPC board (1) provided with the line structure (4) is covered with a protective film, characterized in that: At least one of the line structures (4) is provided with two jumper breakpoints (5) that are disconnected and offset, the protective film is provided with two first windows (11) correspondingly exposing the two jumper breakpoints (5), and further comprises a jumper board (2) connected between the two jumper breakpoints (5), the jumper board (2) being provided with a conductive part (6) connecting the two jumper breakpoints (5), so that the two jumper breakpoints (5) are connected and conductive via the conductive part (6).

2. A single-sided FPC jumper connection structure according to claim 1, characterized in that: The jumper board (2) and the single-sided FPC board (1) are arranged in a stacked structure, and the conductive portion (6) is connected to the two jumper breakpoint portions (5) at the two first windows (11) by welding or gluing.

3. A single-sided FPC jumper connection structure according to claim 1 or 2, characterized in that: The conductive part (6) comprises a plurality of gold finger pieces (61) arranged at intervals on the jumper board (2) along the length direction of the jumper board (2); the plurality of gold finger pieces (61) are electrically connected to each other, and the two jumper breakpoint parts (5) are connected to two of the gold finger pieces (61) by welding.

4. A single-sided FPC jumper connection structure according to claim 3, characterized in that: The gold finger sheet (61) or the jumper breakpoint portion (5) is coated with a solder paste structure (8), and at least one soldering hole (62) is provided on the gold finger sheet (61).

5. The single-sided FPC jumper connection structure according to claim 3, characterized in that: The jumper board (2) is a jumper FPC board with a flexible structure, and the jumper FPC board is packaged with connection circuits that are connected in sequence to a plurality of gold finger pieces (61).

6. A single-sided FPC jumper connection structure according to claim 5, characterized in that: The jumper FPC board has a cover film on one side of the connecting circuit, and the cover film has a plurality of second windows correspondingly opened to expose a plurality of gold finger sheets (61), at least two of the second windows are arranged opposite to the two first windows (11), and the first windows (11) and the second windows are respectively in the shape of strips.

7. A single-sided FPC jumper connection structure according to any one of claims 4 to 6, characterized in that: The jumper breakpoint portion (5) comprises a jumper pad arranged in the first window (11), and a glue layer is coated on the welding area between the jumper pad and the gold finger sheet (61) to achieve sealing coverage.

8. The single-sided FPC jumper connection structure according to claim 2, characterized in that: The jumper board (2) is an insulating board with a hard structure, and the conductive part (6) is a conductive sheet (63) or a conductive wire extendedly arranged on the jumper board (2), and the conductive sheet (63) or the conductive wire extends to connect two jumper breakpoint parts (5).

9. The single-sided FPC jumper connection structure according to claim 1, characterized in that: A plurality of outwardly extending collecting plates (7) are provided on both side edges of the single-sided FPC board (1); one end of the plurality of wire structures (4) is respectively connected to a plurality of terminals of the connector (3); and the other ends of the plurality of wire structures (4) are respectively connected to a plurality of collecting plates (7).

10. A single-sided FPC jumper connection structure according to claim 9, characterized in that: A buffer groove (72) is formed between the collection sheet (7) and the single-sided FPC board (1), and the collection sheet (7) is provided with a connecting portion (71) connected to the side of the single-sided FPC board (1) and accommodated in the buffer groove (72), and the connecting portion (71) divides the buffer groove (72) into adjacently connected open groove areas and closed groove areas.

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