Vehicle-mounted charger MOSFET assembly tool

Abstract

The utility model provides a vehicle-mounted charger MOSFET assembly tool. The vehicle-mounted charger MOSFET assembly tool comprises a cover plate; the cover plate is installed on the top surface of the shell through bolts, the shell comprises a shell body and input connectors, the cover plate is installed on the top surface of the shell body through bolts, and the input connectors are installed on the two sides of the side wall of one end of the shell body; the mounting frame is mounted in the shell; a plastic support is installed on the surface of the base, the MOS element is installed on the plastic support, and a ceramic chip is assembled on the MOS element; the PCBA circuit board is installed on the surface of the MOS assembly, and one end of the PCBA circuit board is connected with an output connector; the vehicle-mounted charger MOSFET assembly tool provided by the utility model has the advantages that the heat dissipation path of the MOS tube is ensured to be smooth, the heat dissipation is good, the randomness of manual assembly can be avoided, the accuracy of the position of the MOS tube is improved, and welding with a PCBA is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of charging devices, in particular to a vehicle-mounted charger MOSFET assembly tool. Background Art

[0002] An on-board charger refers to a charger that is fixedly installed on an electric vehicle. As one of the indispensable and important components of a pure electric vehicle, its working environment needs to take into account the environmental conditions of the entire vehicle.

[0003] At present, some existing vehicle charger MOSFET assembly tools will generate heat during long-term high-power operation. The heat dissipation through air cooling is slow and the heat dissipation rate is low, resulting in a low protection level. In addition, during the assembly process of the charger, manual assembly is relatively arbitrary, and the position of the MOS is not precise enough, which makes it difficult to weld it to the PCBA, reducing the assembly performance.

[0004] Therefore, it is necessary to provide a new vehicle charger MOSFET assembly tool to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide an on-board charger MOSFET assembly tool that ensures a smooth heat dissipation path for the MOS tube and good heat dissipation, avoids the randomness of manual assembly, improves the accuracy of the MOS position, and is convenient for welding with the PCBA.

[0006] In order to solve the above technical problems, the on-board charger MOSFET assembly tool provided by the present invention includes: a cover plate; a shell, the cover plate is installed on the top surface of the shell by bolts, and the shell includes a shell and an input connector, the cover plate is installed on the top surface of the shell by bolts, and the input connector is installed on both sides of the side wall of one end of the shell; a mounting frame, the mounting frame is installed inside the shell; a base, a plastic bracket is installed on the surface of the base, and the MOS element is installed on the plastic bracket, the MOS element is assembled with a ceramic sheet, and a tooling pressure block is installed on the ceramic sheet, and the base, the plastic bracket, the MOS element, the ceramic sheet and the tooling pressure block are assembled and combined to form a MOS assembly, and the MOS assembly is vertically installed on the side wall of the mounting frame; a PCBA circuit board, the PCBA circuit board is installed on the surface of the MOS assembly, and one end of the PCBA circuit board is connected to the output connector.

[0007] Preferably, the surface of the PCBA circuit board is provided with a plurality of groups of holes, and the holes provided on the PCBA circuit board are aligned with the positions of the pins extending from the MOS assembly, and the pins extending from the MOS assembly are aligned with the holes of the PCBA circuit board and then welded and fixed.

[0008] Preferably, the inner side wall of the shell is provided with a plurality of pillars, and the height of the pillars is less than the depth of the shell, and the top surface of the pillars is provided with screw holes, and corresponding screw holes are also provided at the corners of the PCBA circuit board. The pillars are fixed to the PCBA circuit board by bolts, and the PCBA circuit board is located at the top end of the shell.

[0009] Preferably, the input connector and the output connector are electrically connected to the PCBA circuit board respectively.

[0010] Preferably, a MOS component and the ceramic sheet are arranged between the base and the tooling pressing block, and the tooling pressing block presses the ceramic sheet to contact the surface of the MOS component, and the MOS component is prevented from contacting the base by the plastic bracket.

[0011] Preferably, the input connector and the output connector are at the same end of the housing, and there are two input connectors, and the output connector is located between the two input connectors.

[0012] Compared with the related art, the vehicle charger MOSFET assembly tool provided by the present invention has the following beneficial effects: the plastic bracket is installed in the base, the MOS component is fixed to the surface of the plastic bracket, so that the MOS component is isolated from the base by the plastic bracket, and then the thermal conductive filler is applied to the surface of the MOS component, and the ceramic sheet is covered on its surface, and then the tool pressing piece is placed on the surface of the ceramic sheet, so that the tool presses and squeezes the ceramic sheet to flatten the applied thermal conductive filler, so that the thermal conductive filler fills the gap between them, and at the same time, the ceramic sheet can be completely attached to the surface of the MOS component. During the installation process, the plastic bracket limits the component to avoid the position of the MOS component from being offset during the installation process, thereby improving the accuracy of the position of the MOS component and realizing assembly. The MOS assembly is formed, and then the MOS assembly is placed laterally on the side wall of the positioning frame fixed in the housing, with the pins extending from one end of the MOS assembly facing upward, so that the pins limit the position of the PCBA circuit board. The PCBA circuit board and the MOS assembly are then welded and fixed together using the pins to form a whole. The PCBA circuit board is then fixed to the interior of the housing using the bolts to further stabilize the PCBA circuit board inside the housing. The cover plate is then fixed to the top surface of the housing using bolts to protect the electronic components inside the housing. This device has the advantages of ensuring an unobstructed heat dissipation path for the MOS tube, ensuring good heat dissipation, avoiding the randomness of manual assembly, improving the accuracy of the MOS position, and facilitating welding with the PCBA. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a preferred embodiment of the vehicle charger MOSFET assembly tool provided by the utility model;

[0014] Figure 2 for Figure 1 The schematic diagram of the structure of the circuit board installation shown;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure of the components installed inside the shell is shown;

[0016] Figure 4 for Figure 3 The structural diagram of the MOS assembly installation is shown;

[0017] Figure 5 for Figure 4 The schematic diagram of the structure of the tooling block separation is shown;

[0018] Figure 6 for Figure 5 Schematic diagram of the structure of the ceramic sheet separation shown;

[0019] Figure 7 for Figure 6 The schematic diagram of the structure of the MOS element separation shown;

[0020] Figure 8 for Figure 7 Schematic diagram of the structure of the base shown.

[0021] Numbers in the figure: 1. Base, 2. Plastic bracket, 3. MOS component, 4. Ceramic piece, 5. Tooling block, 6. Shell, 61. Housing, 62. Input connector, 7. MOS assembly, 8. PCBA circuit board, 9. Cover, 10. Mounting bracket, 11. Output connector. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0023] See also Figures 1 to 8 , Figure 1 A schematic structural diagram of a preferred embodiment of the vehicle charger MOSFET assembly tool provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the structure of the circuit board installation shown; Figure 3 for Figure 2 A schematic diagram of the structure of the components installed inside the shell is shown; Figure 4 for Figure 3 The structural diagram of the MOS assembly installation is shown; Figure 5 for Figure 4 The schematic diagram of the structure of the tooling block separation is shown; Figure 6 for Figure 5 Schematic diagram of the structure of the ceramic sheet separation shown; Figure 7 for Figure 6 The schematic diagram of the structure of the MOS element separation shown; Figure 8 for Figure 7 The structural diagram of the base shown in the figure, wherein the vehicle charger MOSFET assembly tooling includes: a cover plate 9; a housing 6, the cover plate 9 is mounted on the top surface of the housing 6 by bolts, the housing 6 includes a shell 61 and an input connector 62, the cover plate 9 is mounted on the top surface of the shell 61 by bolts, and the input connector 62 is mounted on both sides of the side wall of one end of the shell 61; a mounting frame 10, the mounting frame 10 is mounted inside the housing 6; a base 1, a plastic bracket 2 is mounted on the surface of the base 1, and the MOS component 3 is mounted on the plastic bracket 2, the MOS component 3 is mounted on the plastic bracket 2, and a ceramic plate 4 is mounted on the MOS component 3, and a tooling pressure block 5 is mounted on the ceramic plate 4, and the base 1, the plastic bracket 2, the MOS component 3, the ceramic plate 4 and the tooling pressure block 5 are assembled and combined to form a MOS assembly 7, and the MOS assembly 7 is vertically mounted on the side wall of the mounting frame 10; a PCBA circuit board 8, the PCBA circuit board 8 is mounted on the surface of the MOS assembly 7, and one end of the PCBA circuit board 8 is connected to the output connector 11.

[0024] In the specific implementation process, Figure 2 and Figure 3 As shown, the surface of the PCBA circuit board 8 is provided with multiple groups of holes, and the holes provided on the PCBA circuit board 8 are aligned with the positions of the pins extending from the MOS assembly 7, and the pins extending from the MOS assembly 7 are aligned with the holes of the PCBA circuit board 8 and then welded and fixed; it is convenient for the pins of the MOS assembly 7 to limit the position of the PCBA circuit board 8, and the PCBA circuit board 8 and the MOS assembly 7 can be connected into a whole by welding the pins to the PCBA circuit board 8.

[0025] In the specific implementation process, Figure 2 and Figure 3As shown, the inner wall of the shell 61 is provided with multiple pillars 12, and the height of the pillars 12 is less than the depth of the shell 61, and the top surface of the pillars 12 is provided with screw holes, and the corners of the PCBA circuit board 8 are also provided with corresponding screw holes. The pillars 12 are fixed to the PCBA circuit board 8 by bolts, and the PCBA circuit board 8 is at the top of the shell 61; it is convenient for the pillars 12 to support the PCBA circuit board 8 to be positioned inside the top of the shell, and at the same time, the position of the PCBA circuit board 8 can be fixed by the threaded connection between the bolts and the pillars 12.

[0026] In the specific implementation process, Figure 1 、 Figure 2 and Figure 3 As shown, the input connector 62 and the output connector 11 are electrically connected to the PCBA circuit board 8 through wires respectively; the input connector 62 and the output connector 11 are at the same end, and there are two input connectors 62, and the output connector 11 is located between the two input connectors 62; it is convenient to electrically connect the charger to the outside world through the output connector 11 and the input connector 62.

[0027] In the specific implementation process, Figure 1 、 Figure 2 and Figure 3 As shown, the MOS component 3 and the ceramic sheet 4 are arranged between the base 1 and the tooling pressing block 5, and the tooling pressing block 5 presses the ceramic sheet 4 to contact the surface of the MOS component 3, and the MOS component 3 is prevented from contacting the base 1 by the plastic bracket 2; not only does it limit the position of the MOS component 3, but it can also achieve good thermal conductivity and heat dissipation effects on the MOS component 3 through the contact of the ceramic sheet 4.

[0028] The working principle of the vehicle charger MOSFET assembly tool provided by the utility model is as follows:

[0029] During use, the plastic bracket 2 is first placed inside the base 1, and then the MOS component 3 is assembled and snapped onto the plastic bracket 2, so that the plastic bracket 2 limits the position of the MOS component 3, and then the surface of the MOS component 3 is smeared with thermal conductive filler, and then the ceramic sheet 4 is covered on the surface of the MOS component 3, and then the tooling pressing block 5 is placed on the ceramic sheet 4, so that the tooling pressing block 5 squeezes the ceramic sheet 4, so that the thermal conductive filler applied by the ceramic sheet 4 on the MOS component 3 is squeezed and flattened, and then the thermal conductive filler fills the gap between the ceramic sheet 4, the MOS component 3 and the plastic bracket 2, so that the base 1, the MOS component 3, the plastic bracket 2 and the ceramic sheet 4 are connected to form the MOS assembly 7, and then the MOS assembly 7 is laterally installed on the side walls at both ends of the mounting frame 10 fixed inside the shell 61, so that the end with the pins faces directly upwards, and then Then, the PCBA circuit board 8 is placed in accordance with the position of the MOS assembly 7, so that the pins extending from the MOS assembly 7 pass through the through holes provided on the surface of the PCBA circuit board 8, and the output connector 11 and the input connector 62 are at the same end. Then, the MOS assembly 7 is soldered to the PCBA circuit board 8 through the pins, so that the MOS assembly 7 and the PCBA circuit board 8 are fixedly connected together. At the same time, the PCBA circuit board 8 is fixedly connected to the housing 61 by bolts through the screw holes provided on the edge of the PCBA circuit board 8, thereby further strengthening the stability of the circuit board inside the housing 61. Then, the cover plate 9 is fixed to the top surface of the housing 61 by bolts, enclosing and protecting the PCBA circuit board 8 inside. This device has the advantages of ensuring that the heat dissipation path of the MOS tube is unobstructed and heat dissipation is good, and can avoid the randomness of manual assembly, improve the accuracy of the MOS position, and facilitate welding with the PCBA.

[0030] Compared with related technologies, the vehicle charger MOSFET assembly tool provided by the present invention has the following beneficial effects:

[0031] The utility model provides a vehicle charger MOSFET assembly tool, which is configured to install the plastic bracket 2 in the base 1, so that the MOS component 3 is installed through the plastic bracket 2, so that the MOS component 3 is isolated from the base 1 through the plastic bracket 2, and then apply thermal conductive filler to the surface of the MOS component 3, and cover the ceramic sheet 4 on its surface, and then place the tool pressing piece on the surface of the ceramic sheet 4, so that the tool presses and squeezes the ceramic sheet 4 to flatten the applied thermal conductive filler, so that the thermal conductive filler fills the gap between them, and at the same time, the ceramic sheet 4 can be completely attached to the surface of the MOS component 3 to achieve the combination to form the MOS assembly 7, and then the MOS assembly 7 is placed sideways on the side wall of the positioning frame fixed in the shell 6, and the pins extending at one end of the MOS assembly 7 are facing upwards, so that The pins limit the position of the PCBA circuit board 8, and then the PCBA circuit board 8 and the MOS assembly 7 are welded and fixed together through the pins, so that the MOS assembly 7 and the PCBA circuit board 8 become a whole. The PCBA circuit board 8 is then fixed to the inside of the housing 6 by the bolts, so that the PCBA circuit board 8 is further stabilized inside the housing 6, and then the cover plate 9 is fixed to the top surface of the housing 6 by bolts to protect the electronic components inside the housing 6. This structure has the advantages of ensuring that the heat dissipation path of the MOS tube is unobstructed and the heat dissipation is good, and it can avoid the randomness of manual assembly, improve the accuracy of the MOS position, and facilitate welding with the PCBA. This device has the advantages of ensuring that the heat dissipation path of the MOS tube is unobstructed and the heat dissipation is good, and it can avoid the randomness of manual assembly, improve the accuracy of the MOS position, and facilitate welding with the PCBA.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vehicle charger MOSFET assembly tool, characterized in that: include; Cover plate (9); A housing (6), wherein the cover plate (9) is mounted on the top surface of the housing (6) by means of bolts, the housing (6) comprises a shell (61) and an input connector (62), the cover plate (9) is mounted on the top surface of the shell (61) by means of bolts, and the input connector (62) is mounted on both sides of a side wall at one end of the shell (61); a mounting frame (10), the mounting frame (10) being mounted inside the housing (6); A base (1), a plastic bracket (2) is mounted on the surface of the base (1), a MOS element (3) is mounted on the plastic bracket (2), a ceramic sheet (4) is mounted on the MOS element (3), and a tooling pressing block (5) is mounted on the ceramic sheet (4), and the base (1), the plastic bracket (2), the MOS element (3), the ceramic sheet (4) and the tooling pressing block (5) are assembled to form a MOS assembly (7), and the MOS assembly (7) is vertically mounted on the side wall of the mounting frame (10); A PCBA circuit board (8) is mounted on the surface of the MOS assembly (7), and one end of the PCBA circuit board (8) is connected to an output connector (11).

2. The vehicle-mounted charger MOSFET assembly tool according to claim 1, characterized in that: The surface of the PCBA circuit board (8) is provided with a plurality of groups of holes, and the holes provided on the PCBA circuit board (8) are aligned with the positions of the pins extending from the MOS assembly (7), and the pins extending from the MOS assembly (7) are aligned with the holes of the PCBA circuit board (8) and then welded and fixed.

3. The vehicle-mounted charger MOSFET assembly tool according to claim 2, characterized in that: The inner wall of the shell (61) is provided with a plurality of pillars (12), and the height of the pillars (12) is less than the depth of the shell (61), and the top surface of the pillars (12) is provided with screw holes, and the corners of the PCBA circuit board (8) are also provided with corresponding screw holes, the pillars (12) and the PCBA circuit board (8) are fixed by bolts, and the PCBA circuit board (8) is located at the top of the shell (61).

4. The vehicle-mounted charger MOSFET assembly tool according to claim 1, characterized in that: The input connector (62) and the output connector (11) are electrically connected to the PCBA circuit board (8) respectively.

5. The vehicle-mounted charger MOSFET assembly tool according to claim 1, characterized in that: A MOS element (3) and the ceramic sheet (4) are arranged between the base (1) and the tooling pressing block (5), and the tooling pressing block (5) presses the ceramic sheet (4) against the surface of the MOS element (3), and the MOS element (3) is prevented from contacting the base (1) by the plastic bracket (2).

6. The vehicle-mounted charger MOSFET assembly tool according to claim 1, characterized in that: The input connector (62) and the output connector (11) are at the same end of the housing (61), two input connectors (62) are provided, and the output connector (11) is located between the two input connectors (62).

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