Electromagnetic interference suppression type switching power supply

Abstract

The utility model discloses an electromagnetic interference suppression type switching power supply in the technical field of switching power supplies, which comprises an outer protective shell, a mounting inner cavity is arranged inside the outer protective shell, an isolation plating layer is coated on the inner wall of the mounting inner cavity, the isolation plating layer is an electromagnetic shielding plating layer, the inner wall of the mounting inner cavity is fixedly connected with a buffer layer, and the inner wall of the buffer layer is fixedly connected with an electromagnetic shielding layer. A storage battery is fixedly connected to the inner wall of the mounting inner cavity, heat dissipation holes are formed in the top of the outer protective shell, a dust cover is fixedly connected to the inner wall of the top end of each heat dissipation hole, and a heat dissipation motor is fixedly connected to the interior of each heat dissipation hole. According to the switching power supply, internal equipment is protected through the outer protective shell, electric energy is stored through the storage battery during use, power is supplied to external electric equipment during use, and diamagnetic operation is performed on the internal storage battery through the isolation coating during use, so that electromagnetism is inhibited, and the actual use effect of the switching power supply is improved.

Description

Technical Field

[0001] The utility model relates to the field of switching power supplies, in particular to an electromagnetic interference suppression type switching power supply. Background Art

[0002] Switching mode power supply, also known as switching power supply or switching converter, is a high-frequency power conversion device and a type of power supply. Its function is to convert a voltage level into the voltage or current required by the user through different forms of architecture. The input of the switching power supply is mostly AC power (such as mains) or DC power, and the output is mostly equipment that requires DC power, such as personal computers, and the switching power supply performs the voltage and current conversion between the two.

[0003] When the switching power supply is used for power supply, because it is a small device, the device will be affected by the magnetic field of the use environment during use, which will cause the switching power supply to be subject to electromagnetic interference when in use, thereby reducing the actual use effect of the switching power supply. Utility Model Content

[0004] The purpose of the utility model is to provide an electromagnetic interference suppression type switching power supply, which provides protection for internal equipment through an outer protective shell, stores electric energy through a battery when in use, and supplies power to external electrical equipment when in use. When in use, the internal battery is subjected to anti-magnetic operation through an isolation coating, thereby suppressing electromagnetics and improving the actual use effect of the switching power supply, so as to solve the problem proposed in the above background technology that when the switching power supply is used for power supply, because it is a small device itself, when it is used, the device will be affected by the magnetic field of the use environment, thereby causing the switching power supply to receive electromagnetic interference when in use, thereby reducing the actual use effect of the switching power supply.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electromagnetic interference suppression type switching power supply, comprising an outer protective shell, an installation cavity is opened inside the outer protective shell, the inner wall of the installation cavity is coated with an isolation coating, the isolation coating is an electromagnetic shielding coating, a buffer layer is fixedly connected to the inner wall of the installation cavity, a battery is fixedly connected to the inner wall of the installation cavity, a heat dissipation hole is opened on the top of the outer protective shell, a dust cover is fixedly connected to the top inner wall of the heat dissipation hole, and a heat dissipation motor is fixedly connected to the inside of the heat dissipation hole.

[0006] As a further solution of the utility model: the output end of the heat dissipation motor is arranged toward the top, and the output end of the heat dissipation motor is fixedly connected with a heat dissipation fan blade.

[0007] As a further solution of the utility model: a plurality of output connection ports are fixedly connected to one end of the outer protective shell away from the heat dissipation hole, and partitions are fixedly connected to both ends of the plurality of output connection ports close to each other.

[0008] As a further solution of the utility model: a switch is fixedly connected to one end of the outer protective shell close to the output connection port, and the signal output end of the switch is electrically connected to the control end of the battery.

[0009] As a further solution of the utility model: one end of the outer protective shell is fixedly connected to the controller, and the end of the outer protective shell close to the controller is penetrated and fixedly connected to a power connection port, and the output end of the power connection port is electrically connected to the input end of the battery.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: in the utility model, the outer protective shell is used to provide protection for the internal equipment, and when in use, the battery is used to store electrical energy and supply power to the external electrical equipment when in use; when in use, the internal battery is anti-magnetic through the isolation coating, thereby suppressing electromagnetics and improving the actual use effect of the switching power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the electromagnetic interference suppression switching power supply of the utility model;

[0012] Figure 2 It is an enlarged schematic diagram of the cross-sectional structure of the outer protective shell of the electromagnetic interference suppression switching power supply of the utility model;

[0013] Figure 3 This utility model is an electromagnetic interference suppression type switching power supply Figure 1 A schematic diagram of the structure enlargement at the center A;

[0014] Figure 4 It is an enlarged schematic diagram of the structure of the heat dissipation fan blades in the electromagnetic interference suppression switching power supply of the utility model.

[0015] In the figure: 1. outer protective shell; 2. power connection port; 3. controller; 4. heat dissipation hole; 5. dust cover; 6. partition; 7. output connection port; 8. switch; 9. battery; 10. installation cavity; 11. isolation coating; 12. buffer layer; 13. heat dissipation fan blades; 14. heat dissipation motor. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0018] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figures 1 to 4 In the embodiment of the utility model, the electromagnetic interference suppression type switching power supply includes an outer protective shell 1, an installation cavity 10 is opened inside the outer protective shell 1, the inner wall of the installation cavity 10 is coated with an isolation coating 11, the isolation coating 11 is an electromagnetic shielding coating, a buffer layer 12 is fixedly connected to the inner wall of the installation cavity 10, a battery 9 is fixedly connected to the inner wall of the installation cavity 10, a heat dissipation hole 4 is opened on the top of the outer protective shell 1, a dust cover 5 is fixedly connected to the inner wall of the top of the heat dissipation hole 4, and a heat dissipation motor 14 is fixedly connected to the inside of the heat dissipation hole 4.

[0021] Preferably, in this embodiment, the isolation coating 11 is an electromagnetic shielding coating, and its specific functions, materials and configuration methods are as follows:

[0022] Electromagnetic shielding is the use of a shielding body to reflect and attenuate the electromagnetic energy flow so that it cannot enter the shielding area. In fact, it limits the propagation of electromagnetic waves in space, and the shielding body plays a vital role in the middle.

[0023] There are many methods to explain the electromagnetic shielding mechanism, such as electromagnetic field theory and transmission line theory. Transmission line theory is widely used because of its simple calculation method and high accuracy. In the transmission line theory, the shield is regarded as a section of the transmission line. When the electromagnetic wave radiation field approaches the shield, part of it will be reflected on its surface, and the rest will be transmitted into the shield to continue transmission. During the transmission process, the electromagnetic waves inside are attenuated by the shield, and multiple reflections and transmissions occur on its two interfaces. Therefore, according to the transmission line theory, there are three types of electromagnetic wave shielding mechanisms that propagate to the surface of the shield: one is the reflection dissipation on the incident surface; the second is the dissipation of electromagnetic waves that are not reflected and enter the inside of the shield and are absorbed by the material; the third is the electromagnetic waves that enter the shield and are reflected and dissipated by the internal materials multiple times.

[0024] Metal is a traditional electromagnetic shielding material, which is widely used due to its good electrical conductivity and high magnetic permeability. The electrical conductivity of metal materials is better than that of most polymer materials, so the electromagnetic shielding performance of the material can be improved by adding conductive metal fibers inside the polymer material or coating the surface.

[0025] Metal shielding materials are usually classified as follows: one is good conductor shielding materials with high conductivity. Such materials have good shielding effects for electromagnetic fields in high and low frequency bands, such as copper and silver. The other is ferromagnetic shielding materials with high magnetic permeability. Such materials have good shielding effects for magnetic fields in low frequency bands, such as iron and nickel. However, such materials have the disadvantage of low conductivity and are not suitable for shielding electromagnetic fields in high frequency bands. In practical applications, metal materials are usually compounded to a certain extent.

[0026] Carbon materials are often used as electromagnetic shielding materials because of their good electrical conductivity. The main forms are: (1) through "doping". One of the effective methods is to introduce other atoms to replace the carbon atoms in graphite, that is, lattice doping. (2) Through compounding, compounding with magnetic materials or conductive polymers to improve electromagnetic shielding performance. (3) Through melt blending, impregnation or coating, loading on the fabric to prepare electromagnetic shielding fabric.

[0027] Among them, graphene shows better performance than graphite, expanded graphite and graphite nanosheets, and can make electromagnetic shielding materials have higher conductivity and shielding effectiveness with lower dosage. At present, when carbon-based materials are used as the main body of shielding materials, they are usually compounded with polymer materials.

[0028] Conductive fabrics have become a hot topic of research in recent years due to their good conductivity, light weight, and ease of use. There are two common methods for making conductive fabrics: one is a fabric blended with metal fibers and textile fibers, and the other is a fabric formed by adding a metal functional layer on the surface of ordinary textiles. Conductive fabrics have good electromagnetic shielding performance and maintain the original characteristics of textiles such as folding resistance.

[0029] The output end of the heat dissipation motor 14 is arranged toward the top, and the output end of the heat dissipation motor 14 is fixedly connected with the heat dissipation fan blade 13 .

[0030] One end of the outer protective shell 1 away from the heat dissipation hole 4 is fixedly connected to a plurality of output connection ports 7 , and both ends of the plurality of output connection ports 7 close to each other are fixedly connected to a partition plate 6 .

[0031] A switch 8 is fixedly connected to one end of the outer protective shell 1 close to the output connection port 7 , and a signal output end of the switch 8 is electrically connected to a control end of a battery 9 .

[0032] One end of the outer protective shell 1 is fixedly connected to the controller 3 , and the end of the outer protective shell 1 close to the controller 3 is penetrated and fixedly connected to the power connection port 2 , and the output end of the power connection port 2 is electrically connected to the input end of the battery 9 .

[0033] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0034] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An electromagnetic interference suppression type switching power supply, comprising an outer protective shell (1), characterized in that: The outer protective shell (1) has an installation cavity (10) formed inside, the inner wall of the installation cavity (10) is coated with an isolation coating (11), the isolation coating (11) is an electromagnetic shielding coating, the inner wall of the installation cavity (10) is fixedly connected with a buffer layer (12), the inner wall of the installation cavity (10) is fixedly connected with a battery (9), the top of the outer protective shell (1) has a heat dissipation hole (4), the inner wall of the top end of the heat dissipation hole (4) is fixedly connected with a dust cover (5), and the inside of the heat dissipation hole (4) is fixedly connected with a heat dissipation motor (14).

2. The electromagnetic interference suppression switching power supply according to claim 1, characterized in that: The output end of the heat dissipation motor (14) is arranged toward the top, and the output end of the heat dissipation motor (14) is fixedly connected with a heat dissipation fan blade (13).

3. The electromagnetic interference suppression switching power supply according to claim 1, characterized in that: One end of the outer protective shell (1) away from the heat dissipation hole (4) is fixedly connected to a plurality of output connection ports (7), and both ends of the plurality of output connection ports (7) close to each other are fixedly connected to partition plates (6).

4. The electromagnetic interference suppression switching power supply according to claim 1, characterized in that: A switch (8) is fixedly connected to one end of the outer protective shell (1) close to the output connection port (7), and a signal output end of the switch (8) is electrically connected to a control end of a storage battery (9).

5. The electromagnetic interference suppression switching power supply according to claim 1, characterized in that: One end of the outer protective shell (1) is fixedly connected to a controller (3), and one end of the outer protective shell (1) close to the controller (3) is penetrated and fixedly connected to a power connection port (2), and the output end of the power connection port (2) is electrically connected to the input end of the storage battery (9).

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