Power-adjustable switching power supply

Abstract

The utility model provides a switching power supply with adjustable power, which comprises a machine body and a ventilation shell, the top of the machine body is fixedly connected with the ventilation shell, the ventilation shell is provided with a plurality of ventilation holes, the input end of the machine body is fixedly connected with a main line, and the output end of the machine body is provided with a plurality of terminals. And the terminal is fastened by a screw. The utility model has the advantage that the heat conduction path is optimized. The long-strip-shaped heat conduction piece can more effectively guide heat from the heat conduction plate to the hollow pipe, and local accumulation of the heat on the mainboard is avoided. The heat dissipation link is matched with a plurality of long-strip-shaped heat conduction pieces in a linear array, heat on the mainboard can be effectively conducted out to the hollow pipe for unified heat collection, then a fan is installed at the end of the hollow pipe, the heat of the hollow pipe is taken away through high-speed airflow, and therefore continuous low-temperature operation of the mainboard is kept, rapid heat dissipation of the switching power supply mainboard is achieved, and the service life of the switching power supply mainboard is prolonged. And the pain point that the mainboard is easy to accumulate heat and is not smooth in heat dissipation is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of switching power supply technology, and in particular to a switching power supply with adjustable power. Background Technology

[0002] The basic working principle of a switching power supply is to switch the input voltage into a high-frequency pulse signal by switching a transistor. This high-frequency pulse signal is then transformed by a transformer or inductor and processed by a filter circuit to finally obtain a stable DC output voltage. The output voltage of a switching power supply can be adjusted and stabilized as needed to meet the power requirements of different devices.

[0003] Existing switching power supplies are relatively compact, with internal components designed in a concentrated manner. The motherboard of these power supplies is prone to heat accumulation, and its surface is typically covered with various electronic components, such as rectifier bridges, high-current rectifier diodes, high-power transistors, or MOSFETs. These components generate heat during operation. A perforated casing alone cannot achieve rapid heat dissipation for the motherboard. Therefore, a power-adjustable switching power supply is proposed to address these issues. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a power adjustable switching power supply to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of the present invention provides a power adjustable switching power supply, including a body and a ventilated housing, wherein the ventilated housing is fixedly connected to the top of the body, and the ventilated housing has a plurality of vent holes.

[0007] The main line is fixedly connected to the input end of the machine body, and several terminals are installed on the output end of the machine body, and the terminals are fastened with screws.

[0008] The machine body is equipped with a motherboard, which integrates a power conversion module, a PWM control module, a feedback module and a protection module.

[0009] The motherboard integrates an input filtering module, a rectification module, and an output filtering module.

[0010] A heat-conducting plate is fixedly connected to the bottom of the body, and a number of heat-conducting components are fixedly connected to the bottom of the heat-conducting plate. Fins are fixedly connected to the bottom and both sides of the heat-conducting components.

[0011] A hollow tube is fixedly connected to the end of the heat-conducting component, and a fan is installed at one end of the hollow tube, with the air outlet of the fan facing the hollow tube.

[0012] Preferably, in any of the above solutions, the body is bonded to the breathable shell, and the body is made of plastic.

[0013] The above technical solution is adopted: This switching power supply is connected to the mains power through the main line and connected to each load through terminals.

[0014] In this switching power supply, the input filtering module, composed of components such as filter capacitors, is used to filter out high-frequency noise and interference in the input power supply, ensuring the stability of the power supply.

[0015] A rectifier module, consisting of components such as a rectifier bridge, is used to convert alternating current (AC) into direct current (DC), providing a stable DC power supply for subsequent switching.

[0016] The output filtering module, composed of components such as filter inductors and filter capacitors, is used to filter out high-frequency noise and spurious waves in high-frequency pulse signals, resulting in smooth output current and voltage.

[0017] The PWM control module is used to generate high-frequency PWM signals to control the switching frequency and duty cycle of high-frequency switching devices, thereby regulating the output voltage and current.

[0018] The feedback module includes a sampling circuit, a comparison circuit, and an adjustment circuit. It obtains a feedback error signal by sampling and comparing the output voltage, and then adjusts the duty cycle of the PWM signal to stabilize the output voltage.

[0019] The protection module includes input over / under voltage protection circuits, output over / under voltage protection circuits, output overcurrent protection circuits, and output short-circuit protection circuits. It can promptly cut off the power supply or adjust the output voltage and current when abnormal power conditions occur, protecting the safety of the power supply and the load.

[0020] The power conversion module includes high-frequency switching devices (such as MOSFETs and IGBTs) and transformer components. The high-frequency switching devices convert direct current into high-frequency pulse signals, which are then transformed by the transformer to adjust the output voltage and current.

[0021] The input filtering module is subsequently connected to the rectifier module, power conversion module, and output filtering module in sequence, while the PWM control module, feedback module, and protection module provide assistance along these connection paths.

[0022] Preferably, the top and side surfaces of the ventilated housing are provided with a linear array of ventilated holes.

[0023] Preferably, in any of the above solutions, the motherboard is fixed with screws.

[0024] This switching power supply has adjustable power. Its principle is based on a power conversion module, including high-frequency switching devices (such as MOSFETs and IGBTs) and a transformer. The high-frequency switching devices convert direct current into high-frequency pulse signals, which are then transformed by the transformer to adjust the output voltage and current.

[0025] Preferably, in any of the above solutions, the heat-conducting plate is located below the motherboard and is attached to the motherboard, and the heat-conducting plate is made of ceramic.

[0026] The basic working principle of a switching power supply is to switch the input voltage into a high-frequency pulse signal by switching the transistor. This high-frequency pulse signal is then processed by a transformer and a filter circuit to finally obtain a stable DC output voltage.

[0027] The reason why motherboards are prone to heat buildup is that their surfaces are typically covered with various electronic components, such as rectifier bridges, high-current rectifier diodes, high-power transistors, or MOSFETs. These components generate heat when operating. A perforated case alone cannot achieve rapid heat dissipation and cooling of the motherboard.

[0028] This switching power supply is equipped with a new heat dissipation system, which consists of a ventilated housing, heat-conducting plate, heat-conducting components, fins, hollow tube, and fan.

[0029] The system incorporates a heatsink mounted beneath the motherboard. This heatsink ensures rapid and even heat transfer to the heatsink components, increasing the heat dissipation area and optimizing the heat conduction path. The elongated heatsinks effectively guide heat from the heatsink to the hollow heat pipes, preventing localized heat buildup on the motherboard. This cooling system, combined with multiple linear arrays of elongated heatsinks, effectively directs heat from the motherboard to the hollow heat pipes for unified heat collection. A fan at the end of the hollow heat pipes then uses high-speed airflow to remove the heat, maintaining the motherboard at a consistently low temperature. This rapid heat dissipation effectively addresses the common problem of motherboards accumulating heat and experiencing poor heat dissipation.

[0030] Preferably, of any of the above embodiments, the hollow tube is open at both ends, and the wall thickness of the hollow tube is 0.2-0.3 cm.

[0031] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0032] This adjustable-power switching power supply utilizes a combination of a ventilated housing, heatsink, heat-conducting components, fins, hollow tubes, and a fan. A heatsink is mounted beneath the motherboard, ensuring rapid and even heat transfer to the heat-conducting components. This layout not only increases the heat dissipation area but also optimizes the heat conduction path. The elongated heat-conducting components effectively guide heat from the heatsink to the hollow tubes, preventing localized heat buildup on the motherboard. The cooling system, with multiple linear arrays of elongated heat-conducting components, effectively directs heat from the motherboard to the hollow tubes for unified heat collection. A fan at the end of the hollow tubes then uses high-speed airflow to remove the heat, maintaining the motherboard at a consistently low temperature. This rapid heat dissipation effectively addresses the common problem of motherboards accumulating heat and experiencing poor heat dissipation.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0036] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0037] Figure 3 This is a structural schematic diagram of the present invention from a third-view perspective;

[0038] Figure 4 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0039] In the diagram: 1-body, 2-ventilated shell, 3-main line, 4-terminal, 5-main board, 6-power conversion module, 7-heat plate, 8-heat conduction component, 9-fins, 10-hollow tube, 11-fan. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] In this utility model, 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 connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] like Figure 1-4 As shown, this power adjustable switching power supply includes a body 1 and a ventilated housing 2. The ventilated housing 2 is fixedly connected to the top of the body 1, and the ventilated housing 2 has several vent holes.

[0043] The input end of the machine body 1 is fixedly connected to the main line 3, and several terminals 4 are installed on the output end of the machine body 1. The terminals 4 are fastened with screws.

[0044] The mainboard 5 is installed inside the machine body 1. The mainboard 5 integrates a power conversion module 6, a PWM control module, a feedback module and a protection module.

[0045] The motherboard 5 integrates an input filtering module, a rectification module, and an output filtering module;

[0046] A heat-conducting plate 7 is fixedly connected to the bottom of the body 1. Several heat-conducting components 8 are fixedly connected to the bottom of the heat-conducting plate 7. Fins 9 are fixedly connected to the bottom and both sides of the heat-conducting components 8.

[0047] A hollow tube 10 is fixedly connected to the end of the heat-conducting component 8. A fan 11 is installed at one end of the hollow tube 10, and the air outlet of the fan 11 faces the hollow tube 10.

[0048] Example 1: The main body 1 is bonded to the ventilated shell 2. The main body 1 is made of plastic. This switching power supply is connected to the mains power via the main line 3 and to each load via the terminals 4.

[0049] In this switching power supply, the input filtering module, composed of components such as filter capacitors, is used to filter out high-frequency noise and interference in the input power supply, ensuring the stability of the power supply.

[0050] A rectifier module, consisting of components such as a rectifier bridge, is used to convert alternating current (AC) into direct current (DC), providing a stable DC power supply for subsequent switching.

[0051] The output filtering module, composed of components such as filter inductors and filter capacitors, is used to filter out high-frequency noise and spurious waves in high-frequency pulse signals, resulting in smooth output current and voltage.

[0052] The PWM control module is used to generate high-frequency PWM signals to control the switching frequency and duty cycle of high-frequency switching devices, thereby regulating the output voltage and current.

[0053] The feedback module includes a sampling circuit, a comparison circuit, and an adjustment circuit. It obtains a feedback error signal by sampling and comparing the output voltage, and then adjusts the duty cycle of the PWM signal to stabilize the output voltage.

[0054] The protection module includes input over / under voltage protection circuits, output over / under voltage protection circuits, output overcurrent protection circuits, and output short-circuit protection circuits. It can promptly cut off the power supply or adjust the output voltage and current when abnormal power conditions occur, protecting the safety of the power supply and the load.

[0055] The power conversion module 6 includes high-frequency switching devices (such as MOSFETs, IGBTs, etc.) and transformer elements. The high-frequency switching devices convert DC power into high-frequency pulse signals, which are then transformed by the transformer to adjust the output voltage and current.

[0056] The input filtering module is subsequently connected to the rectifier module, power conversion module 6, and output filtering module in sequence. The PWM control module, feedback module, and protection module provide assistance on these connection paths.

[0057] Example 2: A linear array of vent holes is formed on the top and side surfaces of the ventilated housing 2. The main board 5 is fixed with screws. The heat-conducting plate 7 is located below the main board 5 and is attached to the main board 5; the heat-conducting plate 7 is made of ceramic. The hollow tube 10 has openings at both ends, and the wall thickness of the hollow tube 10 is 0.2-0.3 cm.

[0058] The working principle of this utility model is as follows:

[0059] The basic working principle of a switching power supply is to switch the input voltage into a high-frequency pulse signal by switching the transistor. This high-frequency pulse signal is then processed by a transformer and a filter circuit to finally obtain a stable DC output voltage.

[0060] Compared with the prior art, the present invention has the following advantages:

[0061] This adjustable-power switching power supply, through the coordinated arrangement of a ventilated housing 2, a heat-conducting plate 7, heat-conducting components 8, fins 9, a hollow tube 10, and a fan 11, features a heat-conducting plate 7 installed below the motherboard 5. The heat-conducting plate 7 ensures rapid and even heat transfer to the heat-conducting components 8. This layout not only increases the heat dissipation area but also optimizes the heat conduction path. The elongated heat-conducting components 8 more effectively guide heat from the heat-conducting plate 7 to the hollow tube 10, preventing localized heat accumulation on the motherboard 5. The heat dissipation system, combined with multiple linear arrays of elongated heat-conducting components 8, effectively conducts heat from the motherboard 5 to the hollow tube 10 for unified heat collection. A fan 11 is then installed at the end of the hollow tube 10, using high-speed airflow to remove the heat from the hollow tube 10, thereby maintaining the motherboard's continuous low-temperature operation and achieving rapid heat dissipation for the switching power supply motherboard 1. This effectively addresses the pain point of heat accumulation and poor heat dissipation on the motherboard 1.

Claims

1. A power adjustable switching power supply, characterized by, It includes a body (1) and a breathable shell (2). The top of the body (1) is fixedly connected to the breathable shell (2), and the breathable shell (2) has several breathable holes. The input end of the machine body (1) is fixedly connected to the main line (3), and several terminals (4) are installed on the output end of the machine body (1), and the terminals (4) are fastened with screws. The machine body (1) is equipped with a motherboard (5), which integrates a power conversion module (6), a PWM control module, a feedback module and a protection module. The motherboard (5) integrates an input filtering module, a rectification module, and an output filtering module; A heat-conducting plate (7) is fixedly connected to the bottom of the body (1), and a number of heat-conducting components (8) are fixedly connected to the bottom of the heat-conducting plate (7). Fins (9) are fixedly connected to the bottom and both sides of the heat-conducting components (8). The end of the heat-conducting component (8) is fixedly connected to a hollow tube (10), and a fan (11) is installed at one end of the hollow tube (10), with the air outlet of the fan (11) facing the hollow tube (10).

2. A power adjustable switching power supply as claimed in claim 1, characterized in that: The body (1) is bonded to the breathable shell (2), and the body (1) is made of plastic.

3. A power adjustable switching power supply as claimed in claim 2, characterized in that: The breathable shell (2) has linear arrays of vent holes on its top and side surfaces.

4. A power adjustable switching power supply as claimed in claim 3, characterized in that: The motherboard (5) is fixed by screws.

5. A power adjustable switching power supply as claimed in claim 4, characterized in that: The heat-conducting plate (7) is located below the motherboard (5) and is attached to the motherboard (5). The heat-conducting plate (7) is made of ceramic.

6. A power adjustable switching power supply as claimed in claim 5, characterized in that: The hollow tube (10) has openings at both ends, and the wall thickness of the hollow tube (10) is 0.2-0.3 cm.

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