High-voltage module with inner shielding structure
By introducing an internal shielded insulating shell and shielded copper foil into the high-voltage module, combining specific materials and magnetic cores, the problems of multiple pins, large volume and excessive conduction are solved, and conduction optimization and electromagnetic isolation are achieved, meeting national standards and saving costs.
Patent Information
- Application Number
- CN202411455918.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2024-12-20
AI Technical Summary
The existing high-voltage coil modules have too many pins, large size and lack of shielding structure, which leads to excessive conduction parameters and cannot meet national standards, causing power grid pollution.
A high-voltage module with an internal shielding structure is designed, using an internal shielding insulating shell and shielding copper foil, combined with PBT-G30 material and Φ5*16 ferrite core to ensure electrical insulation performance and miniaturization design, while passing through the boss and Support sheet optimizes pin position and electromagnetic isolation.
It has achieved optimization of conduction indicators, comply with national standards, reduced electromagnetic interference, saved costs, and maintained the appearance and volume of the product.
Smart Images
Figure CN119170377A_ABST
Abstract
Description
Technical Field
[0001] The invention 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 a positive and negative ion generator, belonging to the technical field of high-voltage coils. It includes an insulating frame body, and a concave-convex structure is provided on the side wall of the first secondary winding plate facing the second secondary winding plate, and the concave-convex structure extends from the upper end of the side wall 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 a secondary solder pin base protruding outward, and the upper end of the secondary solder pin base 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 the high-frequency and high-voltage output, the parameters of the CE transmission may exceed the standard and fail to meet the national standards, which will cause pollution to the power grid. Summary of the invention
[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 fewer pins, smaller size, optimized conduction indicators without changing the electrical characteristics and dimensions of the product, and meeting national standards and having an internal shielding structure.
[0006] Technical solution: In order to solve the above technical problems, the high-voltage module with an internal shielding structure described in the present invention includes a high-voltage output module, an internal 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 internal 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 from left to 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, 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 of 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 is a Φ5*16 ferrite core.
[0009] Furthermore, the high-voltage output module is inserted into a PCB circuit board, and the inner shielding insulating shell is sleeved outside 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 sheets 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 pin, the first secondary solder pin and the second secondary solder pin have the same height.
[0016] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: (1) On the PCB, set the coil skeleton pin insertion hole, the size of which is exactly the same as the position of the coil skeleton, to ensure that it is integrated and inserted during production without any position offset; (2) Use of coil frame: Specify 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 sockets, 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 the assembly process; 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 turned on, avoiding interference caused by closed magnetic circuit. (3) Use of inner shielding insulation shell: Specify PBT-G30 material, this engineering plastic has good insulation and flame retardancy, ensuring electrical insulation performance; With a wall thickness of 0.5mm, the insulation shell is miniaturized to meet the size requirements of the internal installation space; The design of the four support plates at the bottom ensures a safe electrical clearance between the insulation shell, PCB circuit board, and coil frame in the height direction; (4) Use of shielding copper foil: Use copper foil with self-adhesive properties, fix the assembly position with the insulation shell, and optimize the process; The copper foil width is specified to be 6mm, and it is installed in the middle of the insulating shell to ensure sufficient safety distance between the copper foil and the PCB, the coil, and the peripheral components of the PCB. After the high-voltage output module adds an internal shielding layer, the internal radiated electromagnetic energy is limited from leaking out of the internal area, and at the same time, external radiation interference is prevented from entering the internal working area of the coil, blocking and reducing electromagnetic energy and suppressing electromagnetic interference. It is confirmed by a third-party test report that when there is no 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. At the same time, without changing the product's appearance 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
[0017] Figure 1 It is a three-dimensional schematic diagram of the overall installation of the present invention; Figure 2 It is a schematic diagram of the overall installation front of the present invention; Figure 3 It is a three-dimensional schematic diagram of the coil skeleton in the present invention; Figure 4 It is a three-dimensional schematic diagram of the inner shielding insulating shell in the present invention; Figure 5 It is a conductive test data diagram without internal shielding in the present invention; Figure 6 This is a diagram of the conduction test data after using inner shielding in the present invention. DETAILED DESCRIPTION
[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1
[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, 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 outside 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 connecting surfaces, which form a rectangular frame, four supporting sheets 5 are provided at the bottom of the internal shielding insulating shell 2, a shielding copper foil 3 is provided outside 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 a 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, and 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 at the center of the coil frame 1.1, which runs through the coil frame 1.1 from left to right. The magnetic core is 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 frame 1.1, a first secondary solder pin 1.3 is provided on the first secondary winding plate on the coil frame 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 frame 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, a boss 1.5 is provided on the secondary solder pin base, and the height of the boss 1.5 is 0.8mm. Example 2
[0020] 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 outside the high-voltage output module 1, the wall thickness of the internal shielding insulating shell 2 is 0.5 mm, the internal shielding insulating shell 2 includes four connection surfaces, which form a rectangular frame, six support sheets 5 are provided at the bottom of the internal shielding insulating shell 2, a shielding copper foil 3 is provided outside the internal shielding insulating shell 2, and the width of the shielding copper foil 3 is 6 mm, the high-voltage output module 1 is inserted on a 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, and the coil skeleton 1.1 is made of PBT-G30 material, A magnetic core running through the coil frame 1.1 from left to right is provided at the center of the coil frame 1.1, and the magnetic core is 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 frame 1.1, a first secondary solder pin 1.3 is provided on the first secondary winding plate on the coil frame 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 frame 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, and the height of the boss 1.5 is 0.8mm. Example 3
[0021] 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 outside the high-voltage output module 1, the wall thickness of the internal shielding insulating shell 2 is 0.5 mm, the internal shielding insulating shell 2 includes four connection surfaces, which form a rectangular frame, three support sheets 5 are provided at the bottom of the internal shielding insulating shell 2, a shielding copper foil 3 is provided outside the internal shielding insulating shell 2, the width of the shielding copper foil 3 is 6 mm, the high-voltage output module 1 is inserted on a 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 and tightly connected, and the high-voltage output module 1 includes a coil skeleton 1.1, and the coil skeleton 1.1 adopts PBT-G30 material is used, and a magnetic core running through the center of the coil frame 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 frame 1.1, a first secondary solder pin 1.3 is provided on the first secondary winding board on the coil frame 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 board on the coil frame 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, and the height of the boss 1.5 is 0.8mm.
[0022] The present invention adopts a PCB circuit board, and sets a coil skeleton pin position insertion hole, the size of which is completely equal to 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 jack, 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 of force are in an open state after power is turned on, 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 and meets the internal The size requirements of the installation space; the design of multiple support pieces at the bottom ensures the safe distance of the electrical clearance between the insulating shell and the PCB circuit board and the coil frame in the height direction; the use of copper foil with self-adhesive properties and the fixed assembly position of the insulating shell and the more optimized process; the copper foil width is specified to be 6mm, and it is assembled in the middle position of the insulating shell to ensure sufficient safety distance between the copper foil and the PCB circuit board, the coil, and the peripheral components of the PCB circuit board; after the high-voltage output module adds an internal shielding layer, the internal radiation electromagnetic energy is limited to leak out of the internal area, and at the same time, external radiation interference is prevented from entering the internal working area of the coil, blocking and reducing electromagnetic energy, and suppressing electromagnetic interference. It is confirmed by a third-party test report that when there is no 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; at the same time, without changing the product's appearance and volume before the improvement, it greatly saves costs and does not affect the customer's overall installation size, achieving the purpose of minimizing design and maximizing improvement.
[0023] The present invention provides a thought and method. There are many methods and ways to implement the technical solution. The above is only the preferred implementation mode 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 protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.
Claims
1. A high voltage module with an inner 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 runs through it from left to 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), 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 inner shielding 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 inner shielding structure according to claim 1, characterized in that: The magnetic core is a Φ5*16 ferrite core.
4. The high voltage module with inner shielding structure according to claim 1, characterized in that: The high-voltage output module (1) is inserted into a 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 inner shielding 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 inner shielding structure according to claim 1, characterized in that: A plurality of support sheets (5) are provided at the bottom of the inner shielding insulation shell (2).
7. The high voltage module with inner shielding structure according to claim 1, characterized in that: The wall thickness of the inner shielding insulation shell (2) is 0.5 mm.
8. The high voltage module with inner shielding 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 inner shielding 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 inner shielding 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.