Laminated flexible circuit board for firmly improving wiring space of power battery

Abstract

The utility model discloses a laminated flexible circuit board for firmly improving wiring space of a power battery. The laminated flexible circuit board comprises two or more layers of flexible circuit boards, two or more layers of flexible circuit boards are stacked, an adhesive layer is arranged between every two adjacent layers of flexible circuit boards, and the adjacent layers of flexible circuit boards are fixed into a whole through double-sided pasting of the adhesive layers. According to the utility model, the adhesive layer (specifically a pressure-sensitive adhesive) is utilized to fix the multi-layer flexible circuit board, and once the multi-layer flexible circuit board is fixed, the flexible board is not easy to directly disconnect due to bumping and vibration; and multiple layers of flexible circuit boards are overlapped, so that the wiring area is relatively large, and the problem of limitation of a traditional wiring space is solved. Besides, punching and copper plating are not needed, so that the laminated flexible circuit board is not provided with a plating layer, the laminated flexible circuit board can be bent at will, and the laminated flexible circuit board is more flexible and convenient to use.

Description

Technical Field

[0001] The utility model relates to a flexible circuit board, in particular to a laminated flexible circuit board which can firmly increase the wiring space of a power battery. Background Art

[0002] Traditional double-layer flexible circuit boards achieve electrical signal connectivity through perforation and copper plating, that is, by perforating copper on a flexible circuit board, using the copper holes as converters to achieve double-sided wiring. Once the insulation layer of such traditional double-layer flexible circuit boards is damaged due to bumps and vibrations during transportation, the double-sided boards will become disconnected; at the same time, the copper-plated area cannot be bent, and the limitations of the bending area make the double-layer flexible circuit board less flexible, and the wiring area is small, which also limits the wiring space. Utility Model Content

[0003] In order to solve the deficiencies of the above-mentioned technologies, the utility model provides a laminated flexible circuit board that can firmly increase the wiring space of a power battery.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a laminated flexible circuit board for a power battery to firmly increase the wiring space, which includes two or more layers of flexible circuit boards;

[0005] Two or more layers of flexible circuit boards are stacked and placed, and an adhesive layer is provided between each adjacent layer of flexible circuit boards, and the flexible circuit boards of adjacent layers are fixed as a whole by double-sided adhesion of the adhesive layer.

[0006] Preferably, the adhesive layer is a pressure-sensitive adhesive layer.

[0007] Preferably, the laminated flexible circuit board is fixed on the isolation board.

[0008] Preferably, the laminated flexible circuit board and the isolation plate are fixedly connected by heat rivets.

[0009] Preferably, ribs protruding from the surface of the isolation plate are formed at the four edges of the isolation plate.

[0010] Preferably, the height of the ribs is between 3-5 mm.

[0011] The utility model discloses a laminated flexible circuit board for a power battery that can securely increase the wiring space. The laminated flexible circuit board is fixed by an adhesive layer (specifically a pressure-sensitive adhesive). Once the laminated flexible circuit board is fixed, it is not easy for the flexible board to be directly disconnected due to bumps and vibrations. The laminated flexible circuit board has a larger wiring area because the laminated flexible circuit board is stacked, which solves the problem of traditional wiring space limitations. In addition, there is no need to punch holes for copper plating, and there is no plating layer, so the laminated flexible circuit board can be bent at will, which is more flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the laminated flexible circuit board of the utility model placed in an isolation plate.

[0013] Figure 2 for Figure 1 Schematic diagram of the partial cross-section structure.

[0014] Figure 3 for Figure 1 Schematic diagram of the structure of a medium-layer flexible circuit board.

[0015] In the figure: 1. Isolation board; 2. Flexible circuit board; 3. Glue layer; 4. Hot riveting column. DETAILED DESCRIPTION

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] The utility model discloses a stacking scheme for firmly improving the wiring space of a flexible circuit board. A novel stacked flexible circuit board is obtained by improving the linking structure between the flexible circuit boards.

[0018] Specifically: Figure 1 As shown, the laminated flexible circuit board includes two or more layers of flexible circuit boards 2, which are stacked and fixed to each other by adhesive layers. The adhesive layer 3 can be specifically made of pressure-sensitive adhesive (PSA), and an adhesive layer 3 is provided between each adjacent layer of flexible circuit boards 2. The adhesive layer 3 can be applied to any blank area of ​​the circuit, and the adjacent layers of flexible circuit boards 2 are fixed as a whole by double-sided adhesive bonding of the adhesive layer 3. Based on this method, multiple layers of flexible circuit boards can be stacked according to customer needs.

[0019] The above-mentioned integrated laminated flexible circuit board is finally fixed to the isolation board 1 through hot riveting columns. The isolation board 1 has a protective and isolating function, and an aluminum bar is welded and connected to the flexible circuit board.

[0020] Taking the load-bearing problem into consideration, ribs 5 protruding from the surface of the isolation plate 1 are usually formed at the edges of the four sides of the isolation plate 1. The ribs 5 and the isolation plate 1 are integrally formed, and a groove for placing a flexible circuit board is formed based on the rib structure. The flexible circuit board has multiple layers stacked together, but its thickness is thin (about 0.2mm), so there is no need to worry about space. The height of the ribs 5 is usually set between 3-5mm, and it mainly bears the thickness of the aluminum bar.

[0021] Example

[0022] Figure 3 The schematic diagram of the flexible circuit board when it is set to two layers is shown, and the two layers of flexible circuit boards are FPC1 and FPC2, such as Figure 2As shown, FPC1 and FPC2 are bonded by the glue layer in the middle, and then FPC1+glue+FPC2 are fixed to the isolation board 1 by hot riveting. FPC1+glue+FPC2 is equivalent to having two single-sided FPCs, which are pasted together by the PSA glue layer to form a whole. This overall structure can be regarded as a traditional double-layer flexible circuit board.

[0023] Compared with the original structure, double-sided wiring can be achieved without punching and copper plating. Correspondingly, multi-layer wiring can be achieved by stacking glue layers. The glue stacking has the advantages of being less likely to break and having a larger wiring space. Moreover, the required number of layers can be flexibly stacked according to customer requirements, and space allows n stacking. In addition, since there is no plating, it can be fixed more firmly and can be bent at will, solving the problem of limitations of the traditional bending area.

[0024] The above implementation modes are not limitations of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the technical solution of the present invention also belong to the protection scope of the present invention.

Claims

1. A laminated flexible circuit board for a power battery that securely increases wiring space, characterized in that: It includes a flexible circuit board (2) having two or more layers; Two or more layers of flexible circuit boards (2) are stacked and placed, and an adhesive layer (3) is provided between each adjacent layer of flexible circuit boards (2), and the adhesive layer (3) is double-sidedly adhered to fix the adjacent layers of flexible circuit boards (2) into one body.

2. The laminated flexible circuit board for firmly improving the wiring space of the power battery according to claim 1 is characterized in that: The adhesive layer (3) is a pressure-sensitive adhesive layer.

3. The laminated flexible circuit board for firmly improving wiring space of a power battery according to claim 1, characterized in that: The laminated flexible circuit board is fixed on the isolation plate (1).

4. The laminated flexible circuit board for firmly improving wiring space of a power battery according to claim 3 is characterized in that: The laminated flexible circuit board and the isolation plate (1) are fixedly connected via hot riveting columns (4).

5. The laminated flexible circuit board for firmly improving wiring space of a power battery according to claim 3, characterized in that: Ribs (5) protruding from the surface of the isolation plate (1) are formed at the four edges of the isolation plate (1).

6. The laminated flexible circuit board for firmly improving wiring space of a power battery according to claim 5, characterized in that: The height of the ribs (5) is between 3 and 5 mm.

Images