A small high-voltage filter

Abstract

The utility model belongs to filter technical field especially relates to a small -size high -voltage filter, including box body, still include: the inside fixed mounting of box body has the mainboard, the top electric installation of mainboard has the flat film capacitor, one side electric installation of flat film capacitor has high specific energy metallized film capacitor, through flat film capacitor as differential mode capacitance, then utilize high specific energy metallized film capacitor as common mode capacitance, then utilize flat film capacitor cooperation high specific energy metallized film capacitor for direct current filter and anti -surge current, keep stable when facing the high energy impact of sudden, absorb and handle high -frequency peak signal, then utilize super microcrystalline magnetic ring and yellow lacquer thick in filter play the insulating role, can effectively prevent the electrical short circuit between magnetic ring and other components, can effectively restrain high -frequency noise and interference, reduce the damage to other elements to the filter's filtering effect has been improved.

Description

Technical Field

[0001] This utility model belongs to the field of filter technology, and in particular relates to a small high-voltage filter. Background Technology

[0002] In recent years, with the rapid development of power electronics, new energy vehicles, and renewable energy, the domestic demand for small-volume high-voltage filters has increased significantly. China has made significant progress in technological research and development and industrial application, gradually narrowing the gap with advanced international levels. Domestic universities and research institutions have achieved numerous breakthroughs in filter design and new material applications. Domestic companies such as Huawei and BYD have achieved remarkable results in the research and industrialization of high-voltage DC filters. Increasingly stringent requirements for environmental protection and sustainable development in China have driven improvements in filter materials and manufacturing processes. Simultaneously, domestic companies have actively explored integrated design, further reducing filter size by integrating filters with other circuit components. With continuous technological advancements, customized services will become an important market trend, necessitating the development of customized small high-voltage filter products to meet diverse market demands. Therefore, this paper proposes a small high-voltage filter.

[0003] For example, Chinese patent CN214069808U discloses a high-voltage filter, including a filter bracket and a high-voltage magnetic ring, the high-voltage magnetic ring being mounted on the filter bracket; it also includes an impedance component mounted on the filter bracket, the impedance component including at least an X capacitor for suppressing differential-mode interference and a Y capacitor for suppressing common-mode interference.

[0004] This patent has the following problems:

[0005] Existing technologies are inconvenient for efficient filtering in practical applications. The filters exhibit poor suppression of electromagnetic interference during operation, thus reducing their filtering effectiveness. Furthermore, existing technologies are not readily adaptable to the needs of compact devices; small-volume high-voltage filters cannot meet the size requirements of compact equipment, thereby reducing the stability of their use. Therefore, we propose a miniature high-voltage filter. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned technical problems by providing a small high-voltage filter that improves the filtering effect of the filter and enhances the stability of the small-volume filter.

[0007] In view of this, the present invention provides a small high-voltage filter, including a housing, and further comprising: a main board fixedly installed inside the housing, a flat film capacitor electrically installed on the top of the main board, a high-energy-density metallized film capacitor electrically installed on one side of the flat film capacitor, a microcrystalline magnetic ring electrically installed on one side of the high-energy-density metallized film capacitor, a yellow paint layer fixedly installed on the outer ring of the microcrystalline magnetic ring, the housing including a bottom box, a nickel-plated layer fixedly installed on the outside of the bottom box, a lower polyurethane layer fixedly installed at the bottom inside the bottom box, and an upper polyurethane layer movably installed on the top of the lower polyurethane layer.

[0008] Based on the above structure, a flat film capacitor is used as the differential-mode capacitor, followed by a high-energy-density metallized film capacitor as the common-mode capacitor. The flat film capacitor, in combination with the high-energy-density metallized film capacitor, is then used for DC filtering and surge current protection, maintaining stability in the face of sudden high-energy impacts and absorbing and processing high-frequency spike signals. Next, a microcrystalline magnetic ring and yellow varnish are used for insulation within the filter, effectively preventing electrical short circuits between the magnetic ring and other components, thus improving the filter's filtering effect. An aluminum alloy base box with a nickel-plated layer protects the electrical components. Then, lower and upper polyurethane layers are used to wrap the electrical components at both ends of the main board inside the base box, providing efficient internal vibration damping and improving the product's resistance to vibration and impact. This allows it to meet the needs of compact equipment, thereby enhancing the stability of the small-volume filter.

[0009] Preferably, a cover is fixedly installed on the top of the box, an output interface is installed through one side of the box, and an input interface is installed through the other side of the box.

[0010] Preferably, a power supply capacitor is electrically installed on one side of the microcrystalline magnetic ring, a load-side capacitor is electrically installed on one side of the power supply capacitor, and a grounding capacitor is electrically installed on one side of the load-side capacitor.

[0011] Preferably, the cover includes a top cover, which is made of aluminum alloy.

[0012] Preferably, the top cover is in the shape of a cover plate, and a nickel-plated layer is fixedly installed on the outside of the top cover.

[0013] Preferably, an output core is fixedly installed inside the output interface, and an output flexible lead wire is installed through the inside of the output core.

[0014] Preferably, an input core is fixedly installed inside the input interface, and a silver-plated copper wire is installed through the inside of the input core.

[0015] The beneficial effects of this utility model are:

[0016] 1. This small high-voltage filter uses a flat film capacitor as the differential-mode capacitor and a high-energy-density metallized film capacitor as the common-mode capacitor. The flat film capacitor and the high-energy-density metallized film capacitor are used for DC filtering and surge current protection, maintaining stability when faced with sudden high-energy impacts, absorbing and processing high-frequency spike signals. Then, the microcrystalline magnetic ring and yellow varnish are used in the filter to provide insulation, which can effectively prevent electrical short circuits between the magnetic ring and other components, effectively suppress high-frequency noise and interference, reduce damage to other components, and thus improve the filtering effect of the filter.

[0017] 2. This small high-voltage filter uses an aluminum alloy base box with a nickel-plated layer to protect the electrical components. Then, a lower polyurethane layer and an upper polyurethane layer are used to wrap the electrical components at both ends of the main board inside the base box, which can effectively reduce internal vibration and improve the product's resistance to vibration and impact. It can meet the needs of compact equipment. The small high-voltage filter can meet the size requirements of compact equipment, thereby improving the stability of the small-volume filter. Attached Figure Description

[0018] Figure 1 This is a perspective view of the entire utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a partial structural diagram of the power supply side capacitor in this utility model;

[0021] Figure 4 This is a partial perspective view of the box body in this utility model;

[0022] Figure 5 This is a partial structural diagram of the input interface in this utility model.

[0023] The markings in the diagram are as follows:

[0024] 1. Box body; 101. Bottom box; 102. Nickel-plated layer of the box; 2. Cover body; 201. Top cover; 202. Nickel-plated layer of the cover; 3. Output interface; 301. Output core; 302. Output flexible lead wire; 4. Input interface; 401. Input core; 402. Input silver-plated copper wire; 5. Upper polyurethane layer; 6. Lower polyurethane layer; 7. Main board; 8. Flat film capacitor; 801. High-energy-density metallized film capacitor; 9. Microcrystalline magnetic ring; 901. Yellow varnish; 10. Power supply side capacitor; 1001. Load side capacitor; 1002. Grounding capacitor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This application discloses a small high-voltage filter; please refer to [link / reference needed]. Figures 1-5 The system includes a housing 1, and further includes: a main board 7 fixedly installed inside the housing 1; a flat film capacitor 8 electrically installed on the top of the main board 7; a high-energy-density metallized film capacitor 801 electrically installed on one side of the flat film capacitor 8; an ultra-microcrystalline magnetic ring 9 electrically installed on one side of the high-energy-density metallized film capacitor 801; and a yellow paint 901 fixedly installed on the outer ring of the ultra-microcrystalline magnetic ring 9. The housing 1 includes a bottom box 101, an electroplated nickel layer 102 fixedly installed on the outside of the bottom box 101, a lower polyurethane layer 6 fixedly installed at the bottom inside the bottom box 101, and an upper polyurethane layer 5 movably installed on the top of the lower polyurethane layer 6.

[0027] Based on the above structure, a flat film capacitor 8 is used as the differential mode capacitor, followed by a high-energy-density metallized film capacitor 801 as the common mode capacitor. The flat film capacitor 8 and the high-energy-density metallized film capacitor 801 are then used for DC filtering and surge current protection, maintaining stability in the face of sudden high-energy impacts and absorbing and processing high-frequency spike signals. Next, the microcrystalline magnetic ring 9 and the yellow lacquer 901 act as insulation in the filter, effectively preventing electrical short circuits between the magnetic ring and other components, effectively suppressing high-frequency noise and interference, reducing damage to other components, and thus improving the filter's filtering effect. Then, an aluminum alloy base box 101 with a nickel-plated layer 102 protects the electrical components. Finally, a lower polyurethane layer 6 and an upper polyurethane layer 5 are used to wrap the electrical components at both ends of the main board 7 inside the base box 101, providing efficient internal vibration damping and improving the product's vibration and impact resistance. This allows it to meet the needs of compact equipment, and the small high-voltage filter meets the size requirements of compact equipment, thereby improving the stability of the small-volume filter.

[0028] In one embodiment, a cover 2 is fixedly installed on the top of the box 1, an output interface 3 is installed through one side of the box 1, and an input interface 4 is installed through the other side of the box 1.

[0029] Specifically, the cover 2 is fixedly attached to the top of the box 1.

[0030] In this embodiment, the internal electrical components can be installed and used using the housing 1, thereby improving the stability of the filter.

[0031] In one embodiment, a power supply capacitor 10 is electrically installed on one side of the microcrystalline magnetic ring 9, a load-side capacitor 1001 is electrically installed on one side of the power supply capacitor 10, and a grounding capacitor 1002 is electrically installed on one side of the load-side capacitor 1001.

[0032] Specifically, the power supply side capacitor 10 is used in conjunction with the load side capacitor 1001 to withstand voltage.

[0033] In this embodiment, high voltage withstand and high power support can be achieved by utilizing the power supply side capacitor 10, the load side capacitor 1001, and the grounding capacitor 1002, thereby improving the stability of the filter.

[0034] In one embodiment, the cover 2 includes a top cover 201, which is made of aluminum alloy.

[0035] Specifically, the top cover 201 is made of aluminum alloy.

[0036] In this embodiment, the top cover 201 can be used to protect the electrical components at the bottom, thereby improving the safety of using the electrical components.

[0037] In one embodiment, the top cover 201 is shaped like a cover plate, and a nickel-plated cover layer 202 is fixedly installed on the outside of the top cover 201.

[0038] Specifically, the top cover 201 is covered with a nickel-plated layer 202.

[0039] In this embodiment, the corrosion resistance of the filter can be improved by using the electroplated nickel layer 202.

[0040] In one embodiment, an output core 301 is fixedly installed inside the output interface 3, and an output flexible lead 302 is installed through the inside of the output core 301.

[0041] Specifically, output interface 3 uses a combination of gold-plated copper platform and soft leads.

[0042] In this embodiment, the conductivity can be improved by using the output core 301 inside the output interface 3 in conjunction with the output soft lead 302, thereby improving the stability of the filter output connection.

[0043] In one embodiment, an input core 401 is fixedly installed inside the input interface 4, and an input silver-plated copper wire 402 is installed through the inside of the input core 401.

[0044] Specifically, input interface 4 uses multiple flexible leads, which are aviation-grade ultra-flexible wires with a core of multi-strand silver-plated copper wire.

[0045] In this embodiment, the input core 401 inside the input interface 4, in conjunction with the input silver-plated copper wire 402, can be used to improve the contact area and conductivity, thereby enhancing the stability of the filter wiring.

[0046] In this embodiment, a small high-voltage filter uses a flat film capacitor 8 as the differential-mode capacitor and a high-energy-density metallized film capacitor 801 as the common-mode capacitor. The flat film capacitor 8 and the high-energy-density metallized film capacitor 801 are then used for DC filtering and surge current protection, maintaining stability under sudden high-energy impacts and absorbing and processing high-frequency spike signals. Next, a microcrystalline magnetic ring 9 and a yellow lacquer 901 provide insulation within the filter. An aluminum alloy base box 101 with a nickel-plated layer 102 protects the electrical components. Finally, a lower polyurethane layer 6 and an upper polyurethane layer... 5. The electrical components are wrapped around both ends of the main board 7 inside the bottom box 101. Then, the internal electrical components are installed using the box body 1. Next, the power supply capacitor 10, the load capacitor 1001, and the grounding capacitor 1002 are used to achieve high voltage resistance and high power support. Then, the top cover 201 is used to protect the electrical components at the bottom. Next, the nickel-plated layer 202 on the cover is used to improve the corrosion resistance of the filter. Then, the output core 301 inside the output interface 3 is used in conjunction with the output soft lead 302 to improve the conductivity. Next, the input core 401 inside the input interface 4 is used in conjunction with the input silver-plated copper wire 402 to improve the contact area and conductivity.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A small high-voltage filter, comprising a housing (1), characterized in that, Also includes: The box body (1) is fixedly installed with a main board (7). A flat film capacitor (8) is electrically installed on the top of the main board (7). A high-energy-density metallized film capacitor (801) is electrically installed on one side of the flat film capacitor (8). A microcrystalline magnetic ring (9) is electrically installed on one side of the high-energy-density metallized film capacitor (801). A yellow paint thickener (901) is fixedly installed on the outer ring of the microcrystalline magnetic ring (9). The box body (1) includes a bottom box (101). A nickel-plated layer (102) is fixedly installed on the outside of the bottom box (101). A lower polyurethane layer (6) is fixedly installed at the bottom inside the bottom box (101). An upper polyurethane layer (5) is movably installed on the top of the lower polyurethane layer (6).

2. A miniature high-voltage filter according to claim 1, characterized in that: The top of the box (1) is fixedly installed with a cover (2), an output interface (3) is installed through one side of the box (1), and an input interface (4) is installed through the other side of the box (1).

3. A miniature high-voltage filter according to claim 1, characterized in that: A power supply capacitor (10) is electrically installed on one side of the microcrystalline magnetic ring (9), a load-side capacitor (1001) is electrically installed on one side of the power supply capacitor (10), and a grounding capacitor (1002) is electrically installed on one side of the load-side capacitor (1001).

4. A small high-voltage filter according to claim 2, characterized in that: The cover (2) includes a top cover (201) made of aluminum alloy.

5. A small high-voltage filter according to claim 4, characterized in that: The top cover (201) is in the shape of a cover plate, and a nickel-plated layer (202) is fixedly installed on the outside of the top cover (201).

6. A miniature high-voltage filter according to claim 2, characterized in that: The output interface (3) has an output core (301) fixedly installed inside, and output flexible leads (302) are installed through the inside of the output core (301).

7. A small high-voltage filter according to claim 2, characterized in that: The input interface (4) has an input core (401) fixedly installed inside, and the input core (401) is equipped with a silver-plated copper wire (402) through it.

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