A new fixing structure of FPC in CCS

Abstract

The utility model discloses a novel fixed structure of FPC in CCS, including FPC and blister isolation board, and the upper end surface buckle connection FPC of blister isolation board, be provided with a plurality of fixed mechanism on the upper end surface of blister isolation board, be provided with one circular accurate positioning hole and a plurality of oval holes of buckle connection with fixed mechanism on FPC, and the edge of circular accurate positioning hole and the edge of oval hole are all equidistantly provided with rectangular slot, through setting fixed mechanism with the circular accurate positioning hole of setting on FPC, oval hole of buckle connection on the top of blister isolation board, replaced the traditional setting back adhesive on FPC, carry out hot riveting in CCS process, reduced cost and working hours, and set up rectangular slot on the edge of circular accurate positioning hole and the edge of oval hole, and the fixed mechanism has certain activity space at the opening of rectangular slot, and it is more easy to repeatedly dismount to fixed mechanism, has higher replacement maintenance.

Description

Technical Field

[0001] This utility model relates to FPC fixing structures, and more particularly to a novel fixing structure for FPCs in CCS. Background Technology

[0002] Against the backdrop of the rapid development of the new energy vehicle industry, the integration, lightweighting, and high reliability of power battery modules, as the core power source, have become key directions for technological upgrades. Flexible printed circuit board (FPC) components, as a core part of the power battery module connection system (CCS), leverage their high integration and modular design to effectively integrate signal transmission, voltage acquisition, and other functions. They also boast advantages such as high space utilization and compact structure, adapting to the complex installation environment inside power battery modules. This significantly improves the production efficiency and automation level of module assembly, providing crucial support for the safe and stable operation of power batteries.

[0003] In the overall structural design of CCS, the thermoformed partition plate bears the load and positions the FPC components. The reliability of its fixation to the FPC components directly affects the overall performance of CCS. Currently, the industry commonly uses a combination of adhesive backing and hot riveting to fix the FPC components. First, the backing is applied to the back of the FPC for initial positioning, and then the hot riveting process is used to fasten the hot riveting columns to the thermoformed partition plate. This fixing method not only requires adhesive backing and hot riveting processes, increasing costs and time, but also makes rework and repair impossible after the hot riveting process, resulting in a significant increase in maintenance costs. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a novel fixing structure for the FPC in a CCS.

[0005] To solve the above technical problems, the technical solution adopted by this utility model is: a novel fixing structure for FPC in CCS, including FPC and a vacuum-formed isolation plate, wherein the upper end face of the vacuum-formed isolation plate is snapped to the FPC; The upper surface of the vacuum-formed partition plate is provided with several fixing mechanisms; the FPC is provided with a circular precision positioning hole and several elliptical holes that are snapped together with the fixing mechanisms; rectangular slots are provided at equal intervals on the edges of the circular precision positioning hole and the edges of the elliptical holes.

[0006] Furthermore, the fixing mechanism includes a vacuum-formed cylinder and a vacuum-formed cylinder protrusion, with the vacuum-formed cylinder protrusion fixedly disposed on the top of the vacuum-formed cylinder; the diameter of the vacuum-formed cylinder protrusion is larger than the diameter of the vacuum-formed cylinder.

[0007] Furthermore, the slot is a rectangle with an aspect ratio of 3:1.

[0008] Furthermore, the FPC is provided with several fixed assembly areas and circuit areas; the fixed assembly areas are evenly distributed on one side of the circuit area; and the circular precision positioning opening is located at the center of the fixed assembly area.

[0009] Furthermore, in the line area, a number of nickel sheets are fixedly connected at equal intervals to one end of the fixed assembly area on the opposite side, and an aluminum bar is fixedly connected to the other end of the nickel sheets.

[0010] Furthermore, a support plate is provided on the upper surface of the thermoformed partition to abut against the FPC.

[0011] This utility model discloses a novel fixing structure for FPC in CCS. By setting a fixing mechanism above the vacuum forming isolation plate and engaging with the circular and elliptical openings on the FPC through snap-fit ​​connection, it replaces the traditional method of applying adhesive backing to the FPC and performing hot riveting during the CCS process, thus reducing costs and labor time. Furthermore, rectangular slots are formed at the edges of the circular and elliptical openings, and the fixing mechanism has a certain amount of room to move at the opening of the rectangular slots, making it easier to repeatedly disassemble and reassemble the fixing mechanism and providing high replaceability and maintainability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the FPC assembly structure in this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the vacuum-formed cylindrical protrusion in this utility model.

[0014] Figure 3 This is a schematic diagram of the circular precision positioning hole in this utility model.

[0015] Figure 4 This is a schematic diagram of the assembly structure of the product of this utility model.

[0016] In the diagram: 1. FPC; 2. Vacuum-formed partition plate; 3. Vacuum-formed cylinder; 4. Vacuum-formed cylinder protrusion; 5. Support plate; 6. Circular precision positioning hole; 7. Elliptical opening; 8. Groove; 9. Nickel sheet; 10. Aluminum bar. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1-4The diagram shows a novel fixing structure for the FPC in a CCS, comprising an FPC1 and a vacuum-formed partition 2. The upper end face of the vacuum-formed partition 2 is snapped to the FPC1. Several fixing mechanisms are provided on the upper end face of the vacuum-formed partition 2, including a vacuum-formed cylinder 3 and a vacuum-formed cylindrical protrusion 4. The vacuum-formed cylindrical protrusion 4 is fixedly disposed above the vacuum-formed cylinder 3. The vacuum-formed cylinder 3 and the vacuum-formed cylindrical protrusion 4 are vacuum-formed. The diameter of the vacuum-formed cylindrical protrusion 4 is larger than the diameter of the vacuum-formed cylinder 3. The FPC1 has a circular precision positioning hole 6, and the edge of the circular precision positioning hole 6 has equally spaced slots 8. The circular precision positioning hole 6 cooperates with the fixing mechanism. In this embodiment, the radius of the circular precision positioning hole 6 is 2.15mm, allowing for precise positioning and assembly of the FPC1. In this embodiment, the FPC1 also has several elliptical holes 7, each with a radius of 2.25mm and a center distance of 1.5mm, which can assemble the FPC1 and absorb part tolerances. The circular precision positioning hole 6 and the elliptical holes 7 are formed by punching on the FPC1, and both the edges of the circular precision positioning hole 6 and the elliptical holes 7 have slots 8. Four rectangular slots 8, in this embodiment, are 0.6mm long and 0.2mm wide, allowing the edge of the circular precision positioning hole 6 of FPC1 to elastically deform in the vertical assembly direction. After assembly, the FPC1 elastically deforms and recovers, forming a snap-fit ​​with the vacuum-formed cylinder 3 and the vacuum-formed cylinder protrusion 4, thus fixing the FPC1. This provides a higher assembly tolerance. The length direction of the rectangular slots 8 is compatible with the size deviation or installation deviation of the mechanism's snap-fit, eliminating the need for precise alignment and improving assembly efficiency. Furthermore, the fixing mechanism has room for movement at the opening of the slots 8, making it easier to disassemble and remove and less prone to damage compared to the rigid constraints and longer movement space of cross-shaped fixing holes on the market. The FPC1 and the vacuum-formed partition plate 2 are fixed using the fixing mechanism and the circular precision positioning hole 6 for snap-fit ​​connection. An aluminum clamp 10 is fixed between the FPC1 and the vacuum-formed partition plate.

[0019] In this embodiment, the FPC1 is provided with several fixed assembly areas and circuit areas; the fixed assembly areas are equidistantly arranged on one side of the circuit area; the circular precision positioning hole 6 is located at the center of the fixed assembly area; the circuit area is located on the opposite side of the fixed assembly area and is fixedly connected at equal distances to one end of several nickel sheets 9, and the other end of the nickel sheets 9 is fixedly connected to aluminum bars 10. The aluminum bars 10 realize the conduction of current and the transmission of voltage signals, that is, the conduction of current is completed by laser welding with the battery cell, and the voltage signal is completed by welding with the FPC1 and the nickel sheets 9; it should be noted that the connection method between the FPC1 and the nickel sheets 9, and the connection method between the nickel sheets 9 and the aluminum bars 10 are conventional technical means for those skilled in the art.

[0020] In this embodiment, a support plate 5 is provided on the upper surface of the thermoformed isolation plate 2 to support and abut against the FPC1 and the aluminum bar 10.

[0021] During the assembly of CCS, the CCS process does not require hot riveting, and no additional adhesive is needed on FPC1, which reduces costs and labor time. In addition, the cylindrical buckle fixing method allows for repeated disassembly and has high replaceability and maintainability.

[0022] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A novel fixing structure for an FPC in a CCS, comprising an FPC (1) and a vacuum-formed partition plate (2), characterized in that: The upper end face of the blister partition (2) is snapped to connect to the FPC (1); The upper surface of the vacuum-formed partition board (2) is provided with several fixing mechanisms; the FPC (1) is provided with a circular precision positioning hole (6) and several elliptical openings (7) that are snapped together with the fixing mechanisms. Rectangular slots (8) are provided at equal intervals on the edges of the circular precision positioning hole (6) and the elliptical hole (7).

2. The novel fixing structure for the FPC in the CCS according to claim 1, characterized in that: The fixing mechanism includes a vacuum-formed cylinder (3) and a vacuum-formed cylinder protrusion (4), with the vacuum-formed cylinder protrusion (4) fixedly installed above the vacuum-formed cylinder (3); the diameter of the vacuum-formed cylinder protrusion (4) is larger than the diameter of the vacuum-formed cylinder (3).

3. The novel fixing structure for the FPC in the CCS according to claim 1, characterized in that: The slot (8) is a rectangle with a length-to-width ratio of 3:

1.

4. The novel fixing structure for the FPC in the CCS according to claim 1, characterized in that: The FPC (1) is provided with several fixed assembly areas and circuit areas; the fixed assembly areas are set at equal intervals on one side of the circuit area; the circular precision positioning hole (6) is set at the center of the fixed assembly area.

5. The novel fixing structure for the FPC in the CCS according to claim 4, characterized in that: The line area is provided with a fixed assembly area on one side of which a number of nickel sheets (9) are fixedly connected at equal distances to one end, and an aluminum bar (10) is fixedly connected to the other end of the nickel sheets (9).

6. The novel fixing structure for the FPC in the CCS according to claim 1, characterized in that: The upper surface of the thermoformed partition plate (2) is provided with a support plate (5) for abutting against the FPC (1).

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