A switching power supply of a forward topology architecture

Abstract

The utility model discloses a switching power supply of forward topology architecture supplies power, including bottom plate, the bottom plate surface is equipped with the apron, the bottom plate surface is equipped with the circuit board, the circuit board surface is equipped with the inductance base, the inductance base surface is equipped with E piece, E piece top is equipped with I piece, E piece inside inlaying coil. This switching power supply of forward topology architecture supplies power, through installing the apron on the bottom plate surface, installing the circuit board on the bottom plate surface, inlaying the coil in E piece, when producing, the coil is made by the related winding machine, wherein the magnetic core material adopts iron silicon alloy, installs the coil in E piece, then splices E piece and I piece and solidifies with glue, after solidification, directly installs it on the inductance base surface, at this moment, can install the inductance assembly on the circuit board surface and start normal use, and the new inductance volume is small, and the mechanization production is high in production efficiency, and it is convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of forward topology switching technology, and particularly relates to a forward topology switching power supply. Background Technology

[0002] A forward topology switching power supply is a switching power supply topology that converts input DC power to output AC power. In a forward converter, when the switching transistor is turned on, current and energy flow into the load. A freewheeling inductor is required in the forward power supply topology to provide freewheeling current for the output voltage.

[0003] The following problems exist in the application of forward topology switching power supplies on the market: Traditional power supplies require the installation of rod inductors inside. Traditional inductors are manufactured by hand-winding the coils, which are relatively uneven, bulky, and time-consuming, resulting in low production efficiency. They are also relatively expensive and inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a switching power supply with a forward topology to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: a forward topology switching power supply includes a base plate, a cover plate on the surface of the base plate, a circuit board on the surface of the base plate, an inductor base on the surface of the circuit board, an E-plate on the surface of the inductor base, an I-plate on the top of the E-plate, and a coil embedded inside the E-plate.

[0006] Preferably, the surface of the inductor base is provided with an inductor shell, and the inductor shell is rectangular in shape.

[0007] Preferably, the circuit board surface is provided with a battery pack, and the battery pack is symmetrically distributed.

[0008] Preferably, the circuit board surface is provided with a battery cell, and the battery cell is rectangular in shape.

[0009] Preferably, the circuit board surface is provided with a transformer and an output capacitor.

[0010] Preferably, the circuit board surface is provided with a rectifier diode, and the rectifier diode is cylindrical.

[0011] This utility model of a forward topology switching power supply has the following advantages: The forward topology switching power supply has a cover plate mounted on the base plate, a circuit board mounted on the base plate, an inductor base mounted on the circuit board, an E-plate mounted on the inductor base, and an I-plate mounted on top of the E-plate. A coil is embedded inside the E-plate, which is wound using a winding machine during production. The magnetic core material is an iron-silicon alloy. The coil is installed inside the E-plate, and then the E-plate and I-plate are joined and cured with adhesive. After curing, they are directly mounted on the inductor base. The inductor assembly can then be installed on the circuit board for normal use. The new inductor is small in size, produced mechanically, and has high production efficiency. Using this inductor results in high production efficiency and a small size, only 1 / 4 the size of similar products currently on the market. This allows for a redesign of the PCB board, making the entire power module smaller and narrower, reducing the overall cost of the power supply. This is highly advantageous for high-density designs and is convenient to use. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the inductor housing structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the coil structure of this utility model.

[0016] The markings in the diagram are as follows: 1. Base plate; 2. Cover plate; 3. Battery pack; 4. Circuit board; 5. Output capacitor; 6. Inductor housing; 7. Inductor base; 8. Battery cell; 9. I-plate; 10. E-plate; 11. Coil; 12. Rectifier diode; 13. Transformer. Detailed Implementation

[0017] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0018] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0021] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0022] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a forward topology switching power supply according to this utility model.

[0023] like Figure 1-3As shown, this utility model discloses a forward topology switching power supply, including a base plate 1, a cover plate 2 on the surface of the base plate 1, a circuit board 4 on the surface of the base plate 1, an inductor base 7 on the surface of the circuit board 4, an E-plate 10 on the surface of the inductor base 7, an I-plate 9 on the top of the E-plate 10, and a coil 11 embedded inside the E-plate 10. The coil 11 is wound using a winding machine during production, with a core made of iron-silicon alloy. The coil 11 is installed inside the E-plate 10, and then the E-plate 10 and I-plate 9 are joined and cured with adhesive. After curing, it is directly installed on the surface of the inductor base 7. The inductor assembly can then be installed on the surface of the circuit board 4 for normal use. The new inductor is small in size, produced by mechanized processes, has high production efficiency, and is convenient to use.

[0024] The inductor base 7 has an inductor housing 6 on its surface. The inductor housing 6 is rectangular in shape. By installing the inductor housing 6 on the surface of the inductor base 7, the coil 11 can be protected.

[0025] The surface of the circuit board 4 is provided with a battery pack 3, which is symmetrically distributed. The battery pack 3 is installed on the surface of the circuit board 4 to provide power to the switch.

[0026] The circuit board 4 has a battery cell 8 on its surface. The battery cell 8 is rectangular in shape. By installing the battery cell 8 on the surface of the circuit board 4, the switching power supply can be made to operate more stably.

[0027] A transformer 13 and an output capacitor 5 are provided on the surface of the circuit board 4. By installing the transformer 13 and the capacitor on the surface of the circuit board 4, the transformer 13 plays the role of energy transfer and voltage transformation in the forward topology. Its primary coil 11 changes the magnetic flux by switching the switching transistor, while the secondary coil 11 generates an induced voltage to supply the load. The capacitor is used to further smooth the output voltage and ensure a stable DC output.

[0028] The circuit board 4 has a rectifier diode 12 on its surface. The rectifier diode 12 is cylindrical and is used to provide a freewheeling circuit when the switch is turned off, to prevent the transformer 13 and the coil 11 from generating excessive back electromotive force, and to protect the switch and other components.

[0029] The working principle of the switching power supply of this forward topology is as follows: When using this switching power supply, the magnetic core material is made of iron-silicon alloy. The coil 11 is installed inside the E-plate 10, and then the E-plate 10 and the I-plate 9 are spliced ​​and cured with glue. After curing, it is directly installed on the surface of the inductor base 7, and then the inductor shell 6 is covered for protection. At this time, the inductor assembly can be installed on the surface of the circuit board 4 and started to be used normally. The battery pack 3 provides power to the switch. The new inductor is small in size, mechanized production, and has high production efficiency. The transformer 13 plays the role of energy transfer and voltage transformation in the forward topology. Its primary coil 11 changes the magnetic flux by switching the transistor on and off, and the secondary coil 11 generates an induced voltage to supply the load. The capacitor is used to further smooth the output voltage and ensure a stable DC output. The rectifier diode 12 is used to provide a freewheeling circuit when the transistor is turned off, to prevent the transformer 13 and coil 11 from generating excessive back electromotive force, and to protect the transistor and other components.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A switching power supply with a forward topology, comprising a base plate (1), characterized in that: The base plate (1) has a cover plate (2) on its surface, a circuit board (4) on its surface, an inductor base (7) on its surface, an E-piece (10) on its surface, an I-piece (9) on the top of the E-piece (10), and a coil (11) embedded inside the E-piece (10).

2. The switching power supply for the forward topology architecture according to claim 1, characterized in that: The inductor base (7) has an inductor shell (6) on its surface, and the inductor shell (6) is rectangular in shape.

3. The switching power supply for the forward topology architecture according to claim 1, characterized in that: The circuit board (4) has a battery pack (3) on its surface, and the battery pack (3) is symmetrically distributed.

4. The switching power supply for the forward topology architecture according to claim 1, characterized in that: The circuit board (4) has a battery cell (8) on its surface, and the battery cell (8) is rectangular in shape.

5. The switching power supply for the forward topology architecture according to claim 1, characterized in that: The circuit board (4) has a transformer (13) on its surface and an output capacitor (5) on its surface.

6. The switching power supply for the forward topology architecture according to claim 1, characterized in that: The circuit board (4) has a rectifier diode (12) on its surface, and the rectifier diode (12) is cylindrical.

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