An integrated temperature-pressure sensing rigid-flex printed circuit board for a vehicle-mounted fast charging gun

Abstract

The utility model relates to the technical field of circuit board, especially an integrated temperature-pressure sensing rigid-flexible combined circuit board for vehicle-mounted fast charging gun, which comprises a shell, a circuit board is slidably connected inside the shell, a temperature sensor and a pressure sensor are fixedly connected to one side of the circuit board, and strip plates are fixedly connected to both sides of the circuit board. The utility model has the advantages that when the circuit board needs to be overhauled and maintained, the pull rod can be pulled by the pinch plate to move the two clamping blocks, so that the two clamping blocks are separated from the clamping grooves, the clamping of the clamping blocks and the clamping grooves is released, the circuit board can be pulled out of the shell, the circuit board can be conveniently disassembled, when the circuit board needs to be installed and fixed, the circuit board only needs to be inserted into the shell, in the process, the clamping blocks can be clamped with the clamping grooves to complete the installation and locking of the circuit board, and no excessive bolts and auxiliary tools are needed, so that the disassembly and installation are more humanized.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a rigid-flex circuit board for a vehicle fast charging gun that integrates temperature and pressure sensing. Background Technology

[0002] Rigid-Flex PCBs are high-end electronic components that combine the characteristics of rigid circuit boards (PCBs) and flexible circuit boards (FPCs). Through precision manufacturing processes, rigid and flexible layers are seamlessly combined to achieve a "rigid-flexible" structural design. With the development of society, rigid-flex PCBs are being used in the production of vehicle fast charging guns to achieve more diverse functions. Combined with temperature and pressure sensors, they provide a variety of user experiences, making vehicle fast charging guns more user-friendly.

[0003] However, during the installation and use of the circuit board, certain protection and fixing measures are required. This process often requires many auxiliary fixing tools or bolts, which has a certain negative impact on the installation, disassembly and maintenance of the circuit board. Therefore, a rigid-flex circuit board for vehicle fast charging gun with integrated temperature and pressure sensing is proposed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rigid-flex circuit board for vehicle fast charging guns that integrates temperature and pressure sensing, effectively solving the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a rigid-flex circuit board for an in-vehicle fast charging gun with integrated temperature and pressure sensing, comprising a housing, a circuit board slidably connected inside the housing, a temperature sensor and a pressure sensor fixedly connected to one side of the circuit board, strip plates fixedly connected to both sides of the circuit board, and rectangular blocks fixedly connected to both sides of the outer wall of the housing. Each of the two rectangular blocks has a sliding groove inside, and both sliding grooves communicate with the interior of the housing. Each of the two sliding grooves has a locking block slidably connected inside, and the side of each locking block near the strip plate is inclined. Each of the two strip plates near the rectangular blocks has a locking slot, and the two locking blocks correspond to the two locking slots respectively. The circuit board is composed of a first rigid functional layer, a flexible transition layer, a core flexible layer, and a second rigid functional layer, arranged sequentially vertically.

[0006] Preferably, in any of the above solutions, a first spring is fixedly connected inside each of the two slides, and the other end of each of the two first springs is fixedly connected to the side of the two blocks away from the strip plate.

[0007] The technical effect achieved by adopting the above solution is that it can provide thrust to the card block, allowing the card block to move continuously into the card slot and preventing the card block from detaching from the card slot at will, thus making the engagement between the card block and the card slot more stable.

[0008] Preferably, in any of the above solutions, a pull rod is provided inside both of the slides, and the end of each pull rod away from the strip plate extends out of a rectangular block and is fixedly connected to a pinch plate.

[0009] The technical effect achieved by the above solution is that by using this solution, the lever can be pulled by the pinch plate, and the lever can drive the two locking blocks to move, so that the two locking blocks are disengaged from the locking slot, thus releasing the locking blocks from the locking slot.

[0010] Preferably, one of the above solutions is that a plurality of strip-shaped heat dissipation vents are provided on one side of the outer wall of the housing.

[0011] The technical effect achieved by adopting the above solution is that by using this solution, several strip-shaped heat dissipation vents can be used to dissipate heat from the circuit board, thereby increasing the heat dissipation effect and service life of the circuit board.

[0012] Preferably, in any of the above embodiments, the first rigid functional layer uses an FR-4 rigid substrate and rolled copper foil, the flexible transition layer uses a PI flexible substrate, rolled copper foil and modified epoxy resin film, the core flexible layer uses a PI flexible substrate and rolled copper foil, and the second rigid functional layer uses an FR-4 rigid substrate, rolled copper foil and modified epoxy resin film.

[0013] The technical effects achieved by adopting the above solution are as follows: By using this solution, FR-4 rigid substrate and rolled copper foil can be used as the main component mounting area, high-frequency signal and power traces can be laid out, the surface is chemically plated with nickel and gold to prevent oxidation, and it supports SMT chip soldering more effectively. The flexible transition layer connects the top rigid area and the core flexible area. The copper foil adopts "grid wiring" to disperse bending stress. The adhesive film is used to press with the top FR-4. CTE matching reduces interlayer thermal stress. The core flexible layer is covered with PI cover film to enhance wear resistance. The second rigid functional layer is symmetrical with the top layer, laying out the ground plane and low-frequency signals. Local openings are used for connector installation. The overall stress is balanced through the symmetrical structure to avoid warping.

[0014] Preferably, in any of the above embodiments, a rectangular frame is fixedly connected to one side of the outer wall of the housing, the rectangular frame is connected to the housing, and two second springs are fixedly connected to the inner wall of the rectangular frame, with one side of the circuit board in contact with one end of the two springs.

[0015] The technical effect achieved by adopting the above solution is that when the card slot and the card block are disengaged, the second spring can support the circuit board, making it easier for the circuit board to move out of the housing, which is more user-friendly.

[0016] This utility model has the following advantages: 1. This type of vehicle fast charging gun with integrated temperature and pressure sensing uses a rigid-flex circuit board. When the circuit board needs to be inspected or maintained, the lever is pulled by the pinch plate. The lever can move two locking blocks, causing them to disengage from the slots. This releases the locking blocks from the slots, allowing the circuit board to be easily removed from the housing. When the circuit board needs to be installed and fixed, it is only necessary to insert it into the housing. During the process, the locking blocks can engage with the slots to lock the circuit board in place. No excessive bolts or auxiliary tools are required, making disassembly and installation more user-friendly.

[0017] 2. This is a rigid-flex circuit board for an integrated temperature-pressure sensor vehicle fast charging gun. It uses FR-4 rigid substrate and rolled copper foil as the main component mounting area, and lays out high-frequency signal and power traces. The surface is chemically plated with nickel and gold to prevent oxidation, which supports SMT chip soldering for better use. A flexible transition layer connects the top rigid area and the core flexible area. The copper foil adopts "grid wiring" to disperse bending stress. The adhesive film is used to press with the top FR-4. CTE matching reduces interlayer thermal stress. The core flexible layer is covered with a PI cover film to enhance wear resistance. The second rigid functional layer is symmetrical with the top layer, and lays out the ground plane and low-frequency signals. Local openings are used for connector installation. The overall stress is balanced through the symmetrical structure to avoid warping. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the first view of this utility model; Figure 2 This is a structural schematic diagram of the second view of the present invention; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This utility model Figure 3 A schematic diagram of the structure of part A in the middle; Figure 5 This utility model Figure 1 A schematic diagram of the structure of part B in the middle.

[0019] In the diagram: 1-shell, 2-strip heat dissipation vent, 3-second rigid functional layer, 4-core flexible layer, 5-flexible transition layer, 6-first rigid functional layer, 7-first spring, 8-slide groove, 9-pull rod, 10-rectangular block, 11-slot, 12-block, 13-pinch plate, 14-strip plate, 15-block, 16-temperature sensor, 17-spring, 18-pressure sensor, 19-rectangular frame. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0021] like Figures 1 to 5 As shown, a rigid-flex circuit board for an integrated temperature-pressure sensor vehicle fast charging gun includes a housing 1. A circuit board 15 is slidably connected inside the housing 1. A temperature sensor 16 and a pressure sensor 18 are fixedly connected to one side of the circuit board 15. Strip plates 14 are fixedly connected to both sides of the circuit board 15. Rectangular blocks 10 are fixedly connected to both sides of the outer wall of the housing 1. Each rectangular block 10 has a groove 8 inside, and both grooves 8 are connected to the inside of the housing 1. Each groove 8 has a locking block 12 slidably connected inside, and the side of each locking block 12 near the strip plate 14 is inclined. Each strip plate 14 near the rectangular block 10 has a slot 11, and the two locking blocks 12 correspond to the two slots 11 respectively. The circuit board 15 is composed of a first rigid functional layer 6, a flexible transition layer 5, a core flexible layer 4, and a second rigid functional layer 3, which are arranged sequentially.

[0022] As an optional technical solution of this utility model, a first spring 7 is fixedly connected inside each of the two sliding grooves 8. The other end of the two first springs 7 is fixedly connected to the side of the two locking blocks 12 away from the strip plate 14. By using this solution, a pushing force can be provided to the locking blocks 12, so that the locking blocks 12 can move continuously towards the locking groove 11, and prevent the locking blocks 12 from arbitrarily disengaging from the locking groove 11, making the locking of the locking blocks 12 and the locking groove 11 more stable.

[0023] As an optional technical solution of this utility model, each of the two sliding grooves 8 is provided with a pull rod 9. The ends of the two pull rods 9 away from the strip plate 14 extend out of the rectangular block 10 and are fixedly connected to the pinch plate 13. By using this solution, the pull rod 9 can be pulled by the pinch plate 13, and the pull rod 9 can drive the two locking blocks 12 to move, so that the two locking blocks 12 are disengaged from the slot 11, and the locking of the locking blocks 12 and the slot 11 can be released.

[0024] As an optional technical solution of this utility model, a number of strip-shaped heat dissipation holes 2 are provided on one side of the outer wall of the housing 1. By using this solution, the circuit board 15 can be cooled by the number of strip-shaped heat dissipation holes 2, thereby increasing the heat dissipation effect and service life of the circuit board 15.

[0025] As an optional technical solution of this utility model, the first rigid functional layer 6 adopts FR-4 rigid substrate and rolled copper foil, the flexible transition layer 5 adopts PI flexible substrate, rolled copper foil and modified epoxy resin film, the core flexible layer 4 adopts PI flexible substrate and rolled copper foil, and the second rigid functional layer 3 adopts FR-4 rigid substrate, rolled copper foil and modified epoxy resin film. By using this solution, FR-4 rigid substrate and rolled copper foil can be used as the main component mounting area, and high-frequency signal and power traces can be laid. The surface is chemically plated with nickel and gold to prevent oxidation, which supports SMT chip soldering more effectively. The flexible transition layer 5 connects the top rigid area and the core flexible area. The copper foil adopts "mesh wiring" to disperse bending stress. The film is used to press with the top FR-4. CTE matching reduces interlayer thermal stress. The surface of the core flexible layer is covered with PI cover film to enhance wear resistance. The second rigid functional layer 3 is symmetrical with the top layer, laying ground plane and low frequency signal, and partially opening windows for connector installation. The overall stress is balanced by the symmetrical structure to avoid warping.

[0026] As an optional technical solution of this utility model, a rectangular frame 19 is fixedly connected to one side of the outer wall of the housing 1. The rectangular frame 19 is connected to the housing 1. Two second springs 17 are fixedly connected to the inner wall of the rectangular frame 19. One side of the circuit board 15 is in contact with one end of the two springs 17. By using this solution, when the slot 11 and the block 12 are disengaged, the second springs 17 can support the circuit board 15, making it easier for the circuit board 15 to move out of the housing 1, which is more user-friendly.

[0027] This type of rigid-flex circuit board for an in-vehicle fast charging gun with integrated temperature and pressure sensing requires the following steps to use: 1) Use the pinch plate 13 to pull the lever 9 to disengage the two locking blocks 12 from the slot 11 and release the locking blocks 12 from the slot 11; 2) Remove circuit board 15 from the housing; 3) Insert the circuit board 15 into the housing 1. The locking block 12 can engage with the slot 11 to complete the installation and locking of the circuit board 15.

[0028] In summary, when users need to inspect or maintain the circuit board 15, they can use the pinch plate 13 to pull the pull rod 9. The pull rod 9 can move the two locking blocks 12, causing them to disengage from the slots 11. This releases the locking blocks 12 from the slots 11, allowing the circuit board 15 to be easily removed from the housing. When installing or fixing the circuit board 15, simply insert it into the housing 1. During this process, the locking blocks 12 will engage with the slots 11, locking the circuit board 15 in place. This eliminates the need for excessive bolts and auxiliary tools, making disassembly and installation more user-friendly. The FR-4 rigid substrate and rolled copper foil are used as the main component mounting area, and high-frequency signal and power traces are laid out. The surface is chemically plated with nickel and gold to prevent oxidation, which supports SMT chip soldering and makes it more usable. The flexible transition layer 5 connects the top rigid area and the core flexible area. The copper foil adopts "mesh wiring" to disperse bending stress. The adhesive film is used to press with the top FR-4. CTE matching reduces interlayer thermal stress. The core flexible layer is covered with a PI cover film to enhance wear resistance. The second rigid functional layer 3 is symmetrical with the top layer, and ground plane and low-frequency signals are laid out. Local windows are opened for connector installation. The overall stress is balanced by the symmetrical structure to avoid warping.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rigid-flex circuit board for an in-vehicle fast charging gun with integrated temperature and pressure sensing, characterized in that: The device includes a housing (1), inside which a circuit board (15) is slidably connected. A temperature sensor (16) and a pressure sensor (18) are fixedly connected to one side of the circuit board (15). Strip plates (14) are fixedly connected to both sides of the circuit board (15). Rectangular blocks (10) are fixedly connected to both sides of the outer wall of the housing (1). Slide grooves (8) are opened inside the two rectangular blocks (10). The two slide grooves (8) are connected to the inside of the housing (1). A locking block (12) is slidably connected inside the two slide grooves (8). The two locking blocks (12) are inclined on the side near the strip plate (14). The two strip plates (14) are slotted (11) near the rectangular blocks (10). The two locking blocks (12) correspond to the two slots (11) respectively. The circuit board (15) is composed of a first rigid functional layer (6), a flexible transition layer (5), a core flexible layer (4), and a second rigid functional layer (3), which are arranged vertically in sequence.

2. The rigid-flex circuit board for an integrated temperature-pressure sensing vehicle fast charging gun according to claim 1, characterized in that: The interior of each of the two slides (8) is fixedly connected with a first spring (7), and the other end of each of the two first springs (7) is fixedly connected to the side of the two blocks (12) away from the strip plate (14).

3. The rigid-flex circuit board for an integrated temperature-pressure sensing vehicle fast charging gun according to claim 2, characterized in that: Both of the slides (8) are equipped with pull rods (9), and the ends of the two pull rods (9) that are away from the strip plate (14) extend out of the rectangular block (10) and are fixedly connected to the pinch plate (13).

4. The rigid-flex circuit board for an in-vehicle fast charging gun with integrated temperature and pressure sensing according to claim 3, characterized in that: The outer wall of the shell (1) has several strip-shaped heat dissipation vents (2) on one side.

5. The rigid-flex circuit board for an in-vehicle fast charging gun with integrated temperature and pressure sensing according to claim 4, characterized in that: The first rigid functional layer (6) uses FR-4 rigid substrate and rolled copper foil, the flexible transition layer (5) uses PI flexible substrate, rolled copper foil and modified epoxy resin film, the core flexible layer (4) uses PI flexible substrate and rolled copper foil, and the second rigid functional layer (3) uses FR-4 rigid substrate, rolled copper foil and modified epoxy resin film.

6. The rigid-flex circuit board for an in-vehicle fast charging gun with integrated temperature and pressure sensing according to claim 5, characterized in that: A rectangular frame (19) is fixedly connected to one side of the outer wall of the housing (1). The rectangular frame (19) is connected to the housing (1). Two second springs (17) are fixedly connected to the inner wall of the rectangular frame (19). One side of the circuit board (15) is in contact with one end of the two springs (17).

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