High-voltage module with inner shielding structure

Abstract

The utility model relates to a high-voltage module with an internal shielding structure, which comprises a high-voltage output module, an internal shielding insulating shell is arranged outside the high-voltage output module, and shielding copper foil is arranged outside the internal shielding insulating shell. According to the utility model, the pins are few, the size is small, the conduction index is optimized under the condition that the electrical characteristics and the appearance size of a product are not changed at all, and the national standard is met.

Description

Technical Field

[0001] The utility model relates to a high-voltage coil module, in particular to a high-voltage coil module with internal shielding. Background Art

[0002] Chinese patent CN105826055A discloses a high-voltage coil, specifically a high-voltage frame for positive and negative ion generators, belonging to the field of high-voltage coil technology. It comprises an insulating frame body, a first secondary winding plate having a concave-convex structure on the sidewall facing the second secondary winding plate, and the concave-convex structure extends from the upper end of the sidewall of the second secondary winding plate to the end face of the primary winding slot. The upper end of the first secondary winding plate is connected to the first primary long solder pin and the first secondary short solder pin, and the upper end of the second secondary winding plate is provided with an outwardly protruding secondary solder pin base, the upper end of which is connected to the second secondary long solder pin and the second secondary short solder pin.

[0003] Its characteristics are a first-level long solder pin, a first-level short solder pin, a second-level long solder pin, and a second-level short solder pin. There are many pins, and the whole is arranged on one side of the circuit board. The volume is relatively large and there is no shielding structure.

[0004] In addition, when the high-voltage output module is used with the client's complete machine, due to its high-frequency and high-voltage output, the parameters of the conductive CE may exceed the standard and fail to meet the national standards, which will cause pollution to the power grid. Utility Model Content

[0005] Purpose of the invention: The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a high-voltage module with a small size, few pins, optimized conduction indicators without changing the electrical characteristics and dimensions of the product, and an internally shielded structure that meets national standards.

[0006] Technical solution: In order to solve the above technical problems, the high-voltage module with an internal shielding structure described in the utility model includes a high-voltage output module, an inner shielding insulating shell is provided on the outside of the high-voltage output module, and a shielding copper foil is provided on the outside of the inner shielding insulating shell. The high-voltage output module includes a coil skeleton, a magnetic core is provided running through the center of the coil skeleton on the left and right, two primary solder pins are provided on the primary solder pin base at the upper end of the primary winding plate on the coil skeleton, a first secondary solder pin is provided on the first secondary winding plate on the coil skeleton, and a second secondary solder pin is provided on the secondary solder pin base at the upper end of the second secondary winding plate on the coil skeleton, and a boss is provided on at least one of the three places: the primary solder pin base, the first secondary winding plate and the secondary solder pin base.

[0007] Furthermore, the height of the boss is 0.8 mm.

[0008] Furthermore, the magnetic core adopts a Φ5*16 ferrite core.

[0009] Furthermore, the high-voltage output module is inserted into the PCB circuit board, and the inner shielding insulation shell is sleeved on the outside of the high-voltage output module and they are movably tightly connected.

[0010] Furthermore, the inner shielding insulating shell includes four connecting surfaces, which form a rectangular frame.

[0011] Furthermore, a plurality of supporting pieces are provided at the bottom of the inner shielding insulating shell.

[0012] Furthermore, the wall thickness of the inner shielding insulation shell is 0.5 mm.

[0013] Furthermore, the coil skeleton is made of PBT-G30 material.

[0014] Furthermore, the width of the shielding copper foil is 6 mm.

[0015] Furthermore, the primary solder pins, the first secondary solder pins and the second secondary solder pins are of the same height.

[0016] The conduction test data without inner shielding in this utility model are as follows:

[0017]

[0018] The conduction test data after using the inner shield in this utility model are as follows:

[0019]

[0020] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0021] (1) On the PCB, set the coil bobbin pin insertion hole, the size of which is exactly the same as the position of the coil bobbin to ensure that it is inserted into the coil during production without any position offset;

[0022] (2) Use of coil skeleton:

[0023] Specified PBT-G30 material, this engineering plastic has good insulation and flame retardancy, ensuring electrical insulation performance;

[0024] The position arrangement of the metal pins is completely consistent with the PCB circuit board sockets, ensuring smooth assembly and welding during production;

[0025] The 0.8mm boss design on the pin platform ensures a 0.8mm gap when the coil bobbin is inserted into the PCB circuit board, preventing the enameled wire at the root of the pin from breaking during assembly.

[0026] The application of open magnetic circuit uses Φ5*16 ferrite core to ensure that the magnetic lines of force are in an open state after power is applied, avoiding interference caused by closed magnetic circuit.

[0027] (3) Use of inner shielding insulation shell:

[0028] Specified PBT-G30 material, this engineering plastic has good insulation and flame retardancy, ensuring electrical insulation performance;

[0029] The 0.5mm wall thickness design makes the insulation shell miniaturized and meets the size requirements of the internal installation space;

[0030] The design of the four support pieces at the bottom ensures a safe electrical clearance between the insulation shell, PCB, and coil frame in the height direction.

[0031] (4) Use of shielding copper foil:

[0032] The use of self-adhesive copper foil and the assembly position of the insulation shell are fixed, and the process is more optimized;

[0033] The copper foil width is specified to be 6mm and is installed in the middle of the insulation shell to ensure sufficient safety distance between the copper foil and the PCB circuit board, the coil, and the surrounding components of the PCB circuit board;

[0034] After adding an internal shielding layer to the high-voltage output module, the internal radiated electromagnetic energy is restricted from leaking out of the internal area, while preventing external radiation interference from entering the internal working area of ​​the coil. This blocks and reduces electromagnetic energy and suppresses electromagnetic interference. A third-party test report confirmed that without internal shielding, the conduction exceeds the standard by about 2dB. With internal shielding, the conduction meets the national standard with a margin of more than 6dB.

[0035] At the same time, without changing the product's dimensions and volume before improvement, it greatly saves costs and does not affect the customer's overall installation size, achieving the goal of minimizing design and maximizing improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a three-dimensional schematic diagram of the overall installation of the utility model;

[0037] Figure 2 This is a front view of the overall installation of the utility model;

[0038] Figure 3 It is a three-dimensional schematic diagram of the coil skeleton in the utility model;

[0039] Figure 4 It is a three-dimensional schematic diagram of the inner shielding insulation shell in the utility model. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0041] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the high-voltage module with an internal shielding structure described in the utility model includes a high-voltage output module 1, an inner shielding insulating shell 2 is provided on the outside of the high-voltage output module 1, the wall thickness of the inner shielding insulating shell 2 is 0.5 mm, the inner shielding insulating shell 2 includes four connecting surfaces, which form a rectangular frame, four supporting pieces 5 are provided at the bottom of the inner shielding insulating shell 2, a shielding copper foil 3 is provided on the outside of the inner shielding insulating shell 2, the width of the shielding copper foil 3 is 6 mm, the high-voltage output module 1 is inserted into the PCB circuit board 4, the inner shielding insulating shell 2 is sleeved on the outside of the high-voltage output module 1 and they are movably tightly connected, the high-voltage output module 1 includes a coil skeleton 1.1, and the coil skeleton 1.1 adopts PBT-G30 Material, a magnetic core running through the left and right is provided in the center of the coil skeleton 1.1, and the magnetic core adopts a Φ5*16 ferrite core. Two primary solder pins 1.2 are provided on the primary solder pin base at the upper end of the primary winding plate on the coil skeleton 1.1, a first secondary solder pin 1.3 is provided on the first secondary winding plate on the coil skeleton 1.1, a second secondary solder pin 1.4 is provided on the secondary solder pin base at the upper end of the second secondary winding plate on the coil skeleton 1, a boss 1.5 is provided on the primary solder pin base, two bosses 1.5 are provided on the first secondary winding plate, and a boss 1.5 is provided on the secondary solder pin base. The height of the boss 1.5 is 0.8mm. Example 2

[0042] The high-voltage module with an internal shielding structure described in the present invention includes a high-voltage output module 1, an inner shielding insulating shell 2 is provided on the outside of the high-voltage output module 1, the wall thickness of the inner shielding insulating shell 2 is 0.5mm, the inner shielding insulating shell 2 includes four connection surfaces, which form a rectangular frame, six support pieces 5 are provided at the bottom of the inner shielding insulating shell 2, a shielding copper foil 3 is provided on the outside of the inner shielding insulating shell 2, the width of the shielding copper foil 3 is 6mm, the high-voltage output module 1 is inserted on the PCB circuit board 4, the inner shielding insulating shell 2 is sleeved on the outside of the high-voltage output module 1 and they are movably tightly connected, the high-voltage output module 1 includes a coil skeleton 1.1, and the coil skeleton 1.1 is made of PBT-G30 material. A magnetic core is provided running through the center of the coil skeleton 1.1 from left to right, and the magnetic core adopts a Φ5*16 ferrite core. Two primary solder pins 1.2 are provided on the primary solder pin base at the upper end of the primary winding plate on the coil skeleton 1.1, a first secondary solder pin 1.3 is provided on the first secondary winding plate on the coil skeleton 1.1, a second secondary solder pin 1.4 is provided on the secondary solder pin base at the upper end of the second secondary winding plate on the coil skeleton 1, a boss 1.5 is provided on the primary solder pin base, a boss 1.5 is provided on the first secondary winding plate, and a boss 1.5 is provided on the secondary solder pin base. The height of the boss 1.5 is 0.8 mm. Example 3

[0043] The high-voltage module with an internal shielding structure described in the present invention includes a high-voltage output module 1, an internal shielding insulating shell 2 is provided on the outside of the high-voltage output module 1, the wall thickness of the internal shielding insulating shell 2 is 0.5mm, the internal shielding insulating shell 2 includes four connection surfaces, which form a rectangular frame, three support pieces 5 are provided at the bottom of the internal shielding insulating shell 2, a shielding copper foil 3 is provided on the outside of the internal shielding insulating shell 2, the width of the shielding copper foil 3 is 6mm, the high-voltage output module 1 is inserted on the PCB circuit board 4, the internal shielding insulating shell 2 is sleeved on the outside of the high-voltage output module 1 and they are movably tightly connected, the high-voltage output module 1 includes a coil skeleton 1.1, the coil skeleton 1.1 PBT-G30 material is adopted, and a magnetic core running through the center of the coil skeleton 1.1 is provided on the left and right sides. The magnetic core adopts a Φ5*16 ferrite core, and two primary solder pins 1.2 are provided on the primary solder pin base at the upper end of the primary winding plate on the coil skeleton 1.1, a first secondary solder pin 1.3 is provided on the first secondary winding plate on the coil skeleton 1.1, a second secondary solder pin 1.4 is provided on the secondary solder pin base at the upper end of the second secondary winding plate on the coil skeleton 1, a boss 1.5 is provided on the primary solder pin base, and a boss 1.5 is provided on the secondary solder pin base. The height of the boss 1.5 is 0.8mm.

[0044] The utility model adopts a PCB circuit board, and provides a coil skeleton pin position insertion hole, the size of which is exactly the same as the position of the coil skeleton, ensuring integrated insertion during production without any position offset; the coil skeleton is made of PBT-G30 material, this engineering plastic has good insulation and flame retardancy, ensuring electrical insulation performance; the position arrangement of the metal pins is completely consistent with the PCB circuit board socket, ensuring smooth assembly and welding during production; the 0.8mm boss design on the pin platform ensures that there is a 0.8mm gap when the coil skeleton is inserted into the PCB circuit board, preventing the enameled wire at the root of the pin from breaking during assembly; the application of the open magnetic circuit uses a Φ5*16 ferrite core to ensure that the magnetic lines are in an open state after power is applied, avoiding interference caused by the closed magnetic circuit shape; the inner shielding insulation shell is made of PBT-G30 material, this engineering plastic has good insulation and flame retardancy, ensuring electrical insulation performance; the 0.5mm wall thickness design makes the insulation shell miniaturized, meeting the internal The design of multiple support plates at the bottom ensures a safe electrical clearance distance in the height direction between the insulation shell and the PCB circuit board and the coil skeleton; the use of self-adhesive copper foil fixes the assembly position with the insulation shell and optimizes the process; the copper foil width is specified to be 6mm and is installed in the middle position of the insulation shell to ensure sufficient safe distance between the copper foil and the PCB circuit board, the coil, and the surrounding components of the PCB circuit board; after the high-voltage output module adds an internal shielding layer, it limits the leakage of internal radiated electromagnetic energy from the internal area, while preventing external radiation interference from entering the internal working area of ​​the coil, blocking and reducing electromagnetic energy and suppressing electromagnetic interference. A third-party test report confirmed that without internal shielding, the conduction exceeded the standard by about 2dB. With internal shielding, the conduction meets the national standard with a margin of more than 6dB. At the same time, without changing the product's original dimensions and volume, it greatly saves costs and does not affect the customer's overall installation size, achieving the goal of minimizing design and maximizing improvement.

[0045] The present invention provides an idea and method. There are many methods and ways to implement the technical solution. The above is only the preferred implementation method of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention. All components not specified in this embodiment can be implemented using existing technologies.

Claims

1. A high-voltage module with an internal shielding structure, characterized in that: It comprises a high-voltage output module (1), an inner shielding insulating shell (2) is provided outside the high-voltage output module (1), a shielding copper foil (3) is provided outside the inner shielding insulating shell (2), the high-voltage output module (1) comprises a coil frame (1.1), a magnetic core is provided in the center of the coil frame (1.1) and passes through the coil frame (1.1) to the left and right, two primary solder pins (1.2) are provided on a primary solder pin base at the upper end of a primary winding plate on the coil frame (1.1), a first secondary solder pin (1.3) is provided on a first secondary winding plate on the coil frame (1.1), a second secondary solder pin (1.4) is provided on a secondary solder pin base at the upper end of a second secondary winding plate on the coil frame (1.1), and a boss (1.5) is provided on at least one of the three locations of the primary solder pin base, the first secondary winding plate and the secondary solder pin base.

2. The high-voltage module with an inner shield structure according to claim 1, characterized in that: The height of the boss (1.5) is 0.8 mm.

3. The high-voltage module with an inner shield structure according to claim 1, wherein: The magnetic core is a ferrite core of Φ5*16.

4. The high-voltage module with an inner shield structure according to claim 1, characterized in that: The high-voltage output module (1) is inserted into the PCB circuit board (4), and the inner shielding insulation shell (2) is sleeved on the outside of the high-voltage output module (1), and they are movably tightly connected.

5. The high-voltage module with an inner shield structure according to claim 1, characterized in that: The inner shielding insulating shell (2) comprises four connecting surfaces, which form a rectangular frame.

6. The high-voltage module with an inner shield structure according to claim 1, characterized in that: A plurality of support plates (5) are provided at the bottom of the inner shielding insulating shell (2).

7. The high-voltage module with an inner shield structure according to claim 1, characterized in that: The wall thickness of the inner shielding insulating shell (2) is 0.5 mm.

8. The high-voltage module with an inner shield structure according to claim 1, characterized in that: The coil frame (1.1) is made of PBT-G30 material.

9. The high-voltage module with an inner shield structure according to claim 1, characterized in that: The width of the shielding copper foil (3) is 6 mm.

10. The high-voltage module with an inner shield structure according to claim 1, characterized in that: The primary solder pin (1.2), the first secondary solder pin (1.3) and the second secondary solder pin (1.4) have the same height.

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