PFC+LLC switching power supply with good heat dissipation effect

Abstract

The utility model relates to the technical field of switching power supply, and disclose a PFC + LLC switching power supply with good heat dissipation effect, the switching power supply body top is provided with mounting mechanism, the mounting mechanism outside is provided with limit mechanism, the mounting mechanism includes fixed plate, the fixed plate fixed connection is in switching power supply body top left and right sides, the fixed plate inside sliding connection has the slide rod, the slide rod inboard fixed connection has the inclined plate, the slide rod outside fixed connection has the pull plate, the slide rod periphery is connected with spring, the inclined plate outside inserts and has the protection frame, the protection frame top fixed connection has pull -down board. The cooperation of slide rod, inclined plate and spring makes the installation and dismounting operation of protection frame simple, need not complex tool, only needs to pull the pull plate to realize the quick fixing or taking down of protection frame, is convenient for the overhaul, cleaning or replacement to radiating fan and power supply body, has reduced maintenance cost and time cost greatly.

Description

Technical Field

[0001] This utility model relates to the field of switching power supply technology, specifically a PFC+LLC switching power supply with good heat dissipation. Background Technology

[0002] In the field of power electronics, efficiency, power factor, and power density are the three core indicators of switching power supplies. The PFC+LLC combined architecture has gradually become the mainstream solution for medium and high power switching power supplies. The PFC stage solves the grid-side compatibility problem, and the LLC stage solves the DC-DC conversion efficiency problem, achieving the dual goal of high efficiency for both the grid and the load.

[0003] The present invention, CN215345659U, discloses a switching power supply with good heat dissipation and high safety. The output shaft of the drive motor drives a worm gear to rotate through an active bevel gear and a driven bevel gear. The worm gear drives a rotating shaft to rotate through a worm wheel. The worm gear and the rotating shaft drive the heat dissipation blades to rotate, thereby improving air circulation and cooling the inner cavity of the protective box. A thermistor senses the temperature of the inner cavity of the protective box and changes its resistance according to the temperature change, thereby adjusting the power of the drive motor and further improving the heat dissipation effect, thus solving the problem of poor heat dissipation in existing devices.

[0004] This switching power supply, which boasts excellent heat dissipation and high safety, uses a worm gear to drive a rotating shaft, which in turn drives the cooling fins to rotate, improving airflow. However, the cooling fan installed on the device is inconvenient for workers to disassemble. When the cooling fan is damaged, workers need to use external tools to disassemble it over a long period of time. During the disassembly process, the switching power supply cannot be used, affecting work efficiency. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a PFC+LLC switching power supply with good heat dissipation to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PFC+LLC switching power supply with good heat dissipation, including a switching power supply body, a mounting mechanism on the top of the switching power supply body, and a limit mechanism on the outside of the mounting mechanism;

[0007] The mounting mechanism includes a fixing plate, which is fixedly connected to the top left and right sides of the switching power supply body. A sliding rod is slidably connected inside the fixing plate. An inclined plate is fixedly connected to the inner side of the sliding rod. A pull plate is fixedly connected to the outer side of the sliding rod. A spring is sleeved around the sliding rod. A protective frame is inserted into the outer side of the inclined plate. A pull plate is fixedly connected to the top of the protective frame. A cooling fan is fixedly connected inside the protective frame.

[0008] Preferably, the outer side of the spring is fixedly connected to the inner side of the fixed plate, and the inner side of the spring is fixedly connected to the outer side of the inclined plate. When the protective frame does not press against the inclined plate, the elastic force of the spring allows the inclined plate to be inserted into the inner side of the protective frame, thereby limiting the movement of the protective frame.

[0009] Preferably, the protective frame has slots on the left and right sides corresponding to the position of the inclined plate, and the inclined plate is inserted into the slot. The slots allow the inclined plate to be inserted into the protective frame, thus limiting the position of the protective frame.

[0010] Preferably, the protective frame is disposed on the top of the switching power supply body, and the bottom of the protective frame is in close contact with the top of the switching power supply body. When the cooling fan inside the protective frame is operating, it draws in and exhausts the hot air inside the switching power supply body.

[0011] Preferably, the limiting mechanism includes a fixed rod, which is fixedly connected to the outside of the fixed plate, and a rotating plate is rotatably connected to the periphery of the fixed rod. A U-shaped plate is fixedly connected to the outside of the pull plate.

[0012] Preferably, there are two fixing rods, which are fixedly connected to the front and rear sides of the outer side of the fixing plate, respectively. The fixing rods can support the rotating plate and make the rotating plate more stable during rotation.

[0013] Preferably, the U-shaped plate has a slot on its inner side that corresponds to the position of the rotating plate, and the rotating plate is inserted into the slot. The slot allows the rotating plate to be inserted into the U-shaped plate, thus limiting the position of the pull plate.

[0014] Compared with the prior art, this utility model provides a PFC+LLC switching power supply with good heat dissipation, and has the following beneficial effects:

[0015] 1. This PFC+LLC switching power supply features excellent heat dissipation. The mounting mechanism, with its sliding rod, tilting plate, and spring, simplifies the installation and removal of the protective frame. No complex tools are required; simply pulling the pull plate allows for quick fixing or removal of the frame. This facilitates the inspection, cleaning, or replacement of the cooling fan and power supply unit, significantly reducing maintenance and time costs. The cooling fan actively dissipates heat from the core components, accelerating heat dissipation and preventing high temperatures from affecting the power supply's efficiency and lifespan, ensuring its stability during long-term operation.

[0016] 2. In this PFC+LLC switching power supply with good heat dissipation, when the pull plate moves the slide rod and the tilting plate in the limiting mechanism, it can move the U-shaped plate, so that the U-shaped plate can move to the inside of the rotating plate. By moving the rotating plate, the rotating plate can be inserted into the inside of the U-shaped plate, thus limiting the U-shaped plate and the pull plate, making it convenient for workers to disassemble and replace the protective frame. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the installation mechanism.

[0020] Figure 3 This is a schematic diagram of the protective frame and cooling fan structure;

[0021] Figure 4 This is a schematic diagram of the limiting mechanism.

[0022] In the diagram: 1. Switching power supply body; 2. Limiting mechanism; 21. U-shaped plate; 22. Rotating plate; 23. Fixing rod; 3. Mounting mechanism; 31. Pull plate; 32. Cooling fan; 33. Inclined plate; 34. Spring; 35. Fixing plate; 36. Slide rod; 37. Protective frame; 38. Pulling plate. Detailed Implementation

[0023] 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.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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 utility model according to the specific circumstances.

[0025] This utility model provides the following technical solution:

[0026] Example 1

[0027] Please see Figure 1-4 This utility model provides a technical solution: a PFC+LLC switching power supply with good heat dissipation, including a switching power supply body 1, a mounting mechanism 3 is provided on the top of the switching power supply body 1, and a limit mechanism 2 is provided on the outside of the mounting mechanism 3.

[0028] The mounting mechanism 3 includes a fixing plate 35, which is fixedly connected to the top left and right sides of the switching power supply body 1. A slide rod 36 is slidably connected inside the fixing plate 35. An inclined plate 33 is fixedly connected to the inner side of the slide rod 36. A pull plate 31 is fixedly connected to the outer side of the slide rod 36. A spring 34 is sleeved around the slide rod 36. A protective frame 37 is inserted into the outer side of the inclined plate 33. A pull plate 38 is fixedly connected to the top of the protective frame 37. A cooling fan 32 is fixedly connected inside the protective frame 37.

[0029] Furthermore, the outer side of the spring 34 is fixedly connected to the inner side of the fixed plate 35, and the inner side of the spring 34 is fixedly connected to the outer side of the inclined plate 33. When the protective frame 37 does not press the inclined plate 33, the elastic force of the spring 34 allows the inclined plate 33 to be inserted into the inner side of the protective frame 37, thereby limiting the movement of the protective frame 37.

[0030] Furthermore, slots corresponding to the positions of the inclined plate 33 are provided on the left and right sides inside the protective frame 37, and the inclined plate 33 is inserted into the slot. Through the slots, the inclined plate 33 can be inserted into the protective frame 37 to limit the position of the protective frame 37.

[0031] Furthermore, the protective frame 37 is disposed on the top of the switching power supply body 1, and the bottom of the protective frame 37 is in close contact with the top of the switching power supply body 1. When the cooling fan 32 inside the protective frame 37 is operating, it draws in and exhausts the hot air inside the switching power supply body 1.

[0032] Example 2

[0033] Please see Figure 1-4 Furthermore, based on Embodiment 1, the limiting mechanism 2 includes a fixed rod 23, which is fixedly connected to the outside of the fixed plate 35. A rotating plate 22 is rotatably connected to the periphery of the fixed rod 23, and a U-shaped plate 21 is fixedly connected to the outside of the pull plate 31.

[0034] Furthermore, there are two fixing rods 23, which are fixedly connected to the front and rear sides of the outer side of the fixing plate 35 respectively. The fixing rods 23 can support the rotating plate 22, making the rotating plate 22 more stable during rotation.

[0035] Furthermore, the U-shaped plate 21 has a slot on its inner side that corresponds to the position of the rotating plate 22, and the rotating plate 22 is inserted into the slot. Through the slot, the rotating plate 22 can be inserted into the U-shaped plate 21 to limit the position of the pull plate 31.

[0036] In actual operation, when this device is used, when installing the protective frame 37, the protective frame 37 is pressed downward so that the protective frame 37 can press the inclined plate 33, and the inclined plate 33 can press the spring 34 and the slide rod 36. Its bottom is in contact with the top of the switching power supply body 1. When the protective frame 37 does not press the inclined plate 33, the spring 34 returns to its original position under the elastic force, pushing the inclined plate 33 to move inward until the inclined plate 33 is inserted into the corresponding slots on the left and right sides of the protective frame 37, thus completing the initial fixation of the protective frame 37.

[0037] During the operation of the switching power supply body 1, the cooling fan 32 inside the protective frame 37 is activated. By actively exhausting air, the heat flow and dissipation of heat on the top and inside of the switching power supply body 1 are accelerated, and the heat is quickly discharged, effectively reducing the temperature of the power supply during operation and ensuring its stable operation.

[0038] If the protective frame 37 needs to be disassembled for maintenance or replacement of parts, pull the pull plate 31 so that the pull plate 31 can drive the slide rod 36 and the tilt plate 33 to move, so that the tilt plate 33 can squeeze the spring 34. When the pull plate 31 moves, it can drive the U-shaped plate 21 to move, so that the U-shaped plate 21 moves to the inside of the two rotating plates 22. Simply rotate the rotating plate 22 in the opposite direction so that it is inserted into the slot of the U-shaped plate 21, and limit the position of the pull plate 31. Then, the operator pulls the pull plate 38 upward, so that the pull plate 38 drives the protective frame 37 upward, so that the operator can disassemble and replace the protective frame 37. The switching power supply body 1 model is GQ150-240625COZD, the input voltage range is AC90-264V, and the output is DC24V / 6.25A with a maximum output OCP of 2 times.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A PFC+LLC switching power supply with good heat dissipation, comprising a switching power supply body (1), characterized in that: The top of the switching power supply body (1) is provided with a mounting mechanism (3), and a limit mechanism (2) is provided on the outside of the mounting mechanism (3); The installation mechanism (3) includes a fixing plate (35), which is fixedly connected to the top left and right sides of the switching power supply body (1). A slide rod (36) is slidably connected inside the fixing plate (35). An inclined plate (33) is fixedly connected to the inner side of the slide rod (36). A pull plate (31) is fixedly connected to the outer side of the slide rod (36). A spring (34) is sleeved around the slide rod (36). A protective frame (37) is inserted into the outer side of the inclined plate (33). A pull plate (38) is fixedly connected to the top of the protective frame (37). A cooling fan (32) is fixedly connected inside the protective frame (37).

2. The PFC+LLC switching power supply with good heat dissipation according to claim 1, characterized in that: The outer side of the spring (34) is fixedly connected to the inner side of the fixing plate (35), and the inner side of the spring (34) is fixedly connected to the outer side of the inclined plate (33).

3. The PFC+LLC switching power supply with good heat dissipation according to claim 1, characterized in that: The protective frame (37) has slots on the left and right sides corresponding to the positions of the inclined plate (33), and the inclined plate (33) is inserted into the slot.

4. The PFC+LLC switching power supply with good heat dissipation according to claim 1, characterized in that: The protective frame (37) is disposed on the top of the switching power supply body (1), and the bottom of the protective frame (37) is in contact with the top of the switching power supply body (1).

5. A PFC+LLC switching power supply with good heat dissipation according to claim 1, characterized in that: The limiting mechanism (2) includes a fixed rod (23), which is fixedly connected to the outside of the fixed plate (35). A rotating plate (22) is rotatably connected to the outside of the fixed rod (23), and a U-shaped plate (21) is fixedly connected to the outside of the pull plate (31).

6. The PFC+LLC switching power supply with good heat dissipation according to claim 5, characterized in that: There are two fixing rods (23), which are fixedly connected to the front and rear sides of the outer side of the fixing plate (35).

7. A PFC+LLC switching power supply with good heat dissipation according to claim 5, characterized in that: The U-shaped plate (21) has a slot on its inner side that corresponds to the position of the rotating plate (22), and the rotating plate (22) is inserted into the slot.

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