Power supply module with compact structure

Abstract

The utility model discloses a power supply module with a compact structure, which comprises a shell, a heat dissipation plate is supported on the inner wall of the bottom of the shell through a plurality of cushioning assemblies, the heat dissipation plate is in sliding fit with the inner wall of the shell, and a power supply module main body is arranged at the top end of the heat dissipation plate. An air flow cavity is formed between the heat dissipation plate and the inner wall of the bottom of the shell, a plurality of air inlets communicated with the air flow cavity are formed in one end of the shell, heat dissipation fans are installed in the air inlets, a filter screen is arranged on one side of each heat dissipation fan, and through holes opposite to the air inlets are formed in the side wall of the end, away from the air inlets, of the shell. A plurality of air holes are formed in the bottom end of the airflow cavity, and one end of each air hole inclines downwards. According to the utility model, the cushioning component is arranged in the air flow cavity, and the cushioning component is compounded with the air flow cavity, so that the overall thickness is reduced, and the overall structure is more compact.

Description

Technical Field

[0001] This utility model relates to the field of power module technology, and in particular to a compact power module. Background Technology

[0002] A power supply module is a power supply unit that can be directly mounted on a printed circuit board. Its characteristic is that it can provide power to application-specific integrated circuits, digital signal processors, microprocessors, memory, field-programmable gate arrays, and other digital or analog loads. Generally speaking, this type of module is called a point-of-load power supply system or point-of-use power supply system. Due to the many advantages of the modular structure, modular power supplies are widely used in communication fields such as switching equipment, access equipment, mobile communications, microwave communications, optical transmission, and routers, as well as automotive electronics and aerospace.

[0003] A search revealed a Chinese patent publication number CN220935016U, which discloses a power module including a housing. Springs are fixedly connected to both sides of the bottom of the housing cavity. A movable plate is fixedly connected to the top of the springs. Dampers are fixedly connected to both sides of the bottom of the movable plate. The bottom of the dampers is fixedly connected to the bottom of the housing cavity. A shock-absorbing rubber pad is fixedly connected to the bottom of the housing cavity.

[0004] The heat dissipation mechanism, consisting of a heat sink, heat dissipation rod, and fan, and the shock absorption mechanism, consisting of a housing, spring, moving plate, damper, shock-absorbing pad, vertical plate, and horizontal plate, are simply stacked on the side wall of the power supply body, making the power supply module large and not compact. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a compact power module.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A compact power module includes a housing. A heat sink is supported on the inner wall of the bottom of the housing by multiple shock-absorbing components. The heat sink slides in conjunction with the inner wall of the housing. The power module body is disposed at the top of the heat sink. An airflow cavity is formed between the heat sink and the inner wall of the bottom of the housing. A plurality of air inlets communicating with the airflow cavity are provided at one end of the housing. A cooling fan is installed inside the air inlet. A filter screen is disposed on one side of the cooling fan. A through hole is provided on the side wall of the housing away from the air inlet.

[0008] As a further improvement of this utility model: the bottom end of the airflow cavity is provided with a plurality of vent holes, one end of which is inclined downward.

[0009] As a further embodiment of this utility model: the shock-absorbing component includes a buffer plate and a cavity, the buffer plate is fixed to the inner wall of the bottom end of the housing, the cavity is opened inside the buffer plate, and a connecting rod is slidably connected inside the buffer plate.

[0010] As a further improvement of this utility model: limit blocks are provided on both sides of the top of the cavity, the limit blocks are in a limit sliding fit with the connecting rod, a friction layer is provided on the inner wall of the cavity, and the top of the connecting rod is connected to the heat sink.

[0011] As a further improvement of this utility model: a buffer spring is connected to the bottom end of the connecting rod, and the other end of the buffer spring is connected to the bottom end of the cavity. The connecting rod, the buffer plate, and the main body of the limiting block are all made of materials with high thermal conductivity.

[0012] As a further improvement of this utility model: the side wall of the housing is provided with an avoidance groove, the inner wall of the avoidance groove is slidably connected with an installation block, the installation block is connected to the heat sink, and a fixing component is provided inside the installation block.

[0013] As a further embodiment of this utility model: the fixing component includes a pull rod and a limiting rod, the pull rod is slidably connected to the inner wall of the mounting block, the other end of the limiting rod is inserted into the main body of the power module, the pull rod is slidably connected to the inner wall of the mounting block, and one end of the pull rod is connected to the limiting rod.

[0014] As a further embodiment of this utility model: a limiting spring is sleeved on the outside of the pull rod, and the two ends of the limiting spring are respectively connected to the mounting block and the limiting rod. A protrusion is fixed on one side of the outer wall of the pull rod, and the protrusion slides with the mounting block. There is a groove between one end of the protrusion and the limiting rod for the protrusion to cooperate with the mounting block for limiting.

[0015] Compared with the prior art, the present invention provides a compact power module with the following advantages:

[0016] 1. This utility model reduces the overall thickness and makes the overall structure more compact by placing the shock-absorbing component in the airflow cavity and combining the shock-absorbing component with the airflow cavity.

[0017] 2. In this utility model, by providing an airflow cavity and a vent, when the airflow passes through the vent, some of the airflow carrying heat will flow out from the vent, reducing the overall temperature of the airflow in the airflow cavity and preventing the airflow from reducing the heat dissipation effect on locations far from the cooling fan after being heated.

[0018] 3. This utility model, by providing a clearance groove, mounting block and fixing components, facilitates the removal of the power module body and the inspection of the internal components of the power module body compared with the traditional bolt fixing.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a compact power module proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the internal structure of a compact power module proposed in this utility model.

[0022] Figure 3 This is a side view of the airflow cavity of a compact power module proposed in this utility model.

[0023] Figure 4 This is a structural schematic diagram of a compact power module fixing assembly proposed in this utility model.

[0024] In the diagram: 1. Housing; 2. Power module body; 3. Air inlet; 4. Heat sink; 5. Connecting rod; 6. Buffer plate; 7. Cavity; 8. Buffer spring; 9. Limiting block; 10. Cooling fan; 11. Filter screen; 12. Airflow cavity; 13. Vent hole; 14. Clearance groove; 15. Mounting block; 16. Limiting rod; 17. Pull rod; 18. Limiting spring; 19. Protrusion. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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 this utility model.

[0027] Example 1

[0028] A compact power module, such as Figures 1 to 3As shown, the device includes a housing 1. A heat sink 4 is supported on the inner wall of the bottom of the housing 1 by multiple shock-absorbing components. The heat sink 4 slides against the inner wall of the housing 1. A power module body 2 is mounted on the top of the heat sink 4. An airflow cavity 12 is formed between the heat sink 4 and the inner wall of the bottom of the housing 1. Multiple air inlets 3 communicating with the airflow cavity 12 are provided at one end of the housing 1. A cooling fan 10 is installed inside each air inlet 3. A filter 11 is provided on one side of the cooling fan 10. Through holes opposite to the air inlets 3 are provided on the side wall of the housing 1 away from the air inlets 3. Multiple ventilation holes 13 are opened at the bottom of the airflow cavity 12. One end of the vent 13 is inclined downwards. The shock-absorbing component includes a buffer plate 6 and a cavity 7. The buffer plate 6 is fixed to the inner wall of the bottom end of the housing 1. The cavity 7 is opened inside the buffer plate 6. A connecting rod 5 is slidably connected inside the buffer plate 6. Limiting blocks 9 are provided on both sides of the top end of the cavity 7. The limiting blocks 9 are in a limiting sliding fit with the connecting rod 5. A friction layer is provided on the inner wall of the cavity 7. The top end of the connecting rod 5 is connected to the heat dissipation plate 4. A buffer spring 8 is connected to the bottom end of the connecting rod 5. The other end of the buffer spring 8 is connected to the bottom end of the cavity 7. The main bodies of the connecting rod 5, the buffer plate 6, and the limiting blocks 9 are all made of materials with high thermal conductivity.

[0029] When the power module body 2 heats up, the cooling fan 10 operates, filtering the outside air through the filter 11 and allowing it to flow along the airflow cavity 12 to exchange heat with the heatsink 4, connecting rod 5, and buffer plate 6, thus cooling the power module body 2. When the airflow passes through the vent 13, some of the air carrying heat will flow out from the vent 13, reducing the overall temperature of the airflow in the airflow cavity 12 and preventing the airflow from reducing the heat dissipation effect at locations far from the cooling fan 10 after being heated. When the power module body 2 is vibrated, the power module body 2 drives the heatsink 4 to move inside the housing 1, causing the connecting rod 5 to slide on the buffer plate 6. The bottom end of the connecting rod 5 rubs against the friction layer, converting the energy of the vibration into heat generated by friction and consuming it, thus damping the power module body 2.

[0030] By placing the damping component in the airflow cavity 12, the damping component and the airflow cavity 12 are combined, reducing the overall thickness and making the overall structure more compact.

[0031] By providing an airflow cavity 12 and a vent 13, when the airflow passes through the vent 13, some of the airflow carrying heat will flow out from the vent 13, reducing the overall temperature of the airflow in the airflow cavity 12 and preventing the airflow from being heated and reducing the heat dissipation effect at locations far from the cooling fan 10.

[0032] Example 2

[0033] A compact power module is provided in this embodiment, which is based on embodiment 1 and makes the following improvements, such as... Figure 1 , Figure 4As shown, the housing 1 has a clearance groove 14 on its side wall. A mounting block 15 is slidably connected to the inner wall of the clearance groove 14. The mounting block 15 is connected to the heat sink 4. A fixing component is provided inside the mounting block 15. The fixing component includes a pull rod 17 and a limiting rod 16. The pull rod 17 is slidably connected to the inner wall of the mounting block 15. The other end of the limiting rod 16 is inserted into the power module body 2. The pull rod 17 is slidably connected to the inner wall of the mounting block 15. One end of the pull rod 17 is connected to the limiting rod 16. A limiting spring 18 is sleeved on the outside of the pull rod 17. Both ends of the limiting spring 18 are connected to the mounting block 15 and the limiting rod 16, respectively. A protrusion 19 is fixed on one side of the outer wall of the pull rod 17. The protrusion 19 is slidably engaged with the mounting block 15. A groove exists between one end of the protrusion 19 and the limiting rod 16 for limiting the engagement between the protrusion 19 and the mounting block 15.

[0034] When the internal components of the power module body 2 need to be repaired, pull the pull rod 17 outward to disengage the limiting rod 16 from the power module body 2, and the connection between the power module body 2 and the heat sink 4 is released. The protrusion 19 moves with the pull rod 17. When the limiting rod 16 is completely disengaged from the power module body 2, the sliding fit between the protrusion 19 and the mounting block 15 is released. Rotate the pull rod 17 and use the protrusion 19 to limit the pull rod 17.

[0035] By setting up clearance groove 14, mounting block 15 and fixing components, it is easier to remove the power module body 2 and inspect the internal components of the power module body 2 compared with traditional bolt fixing.

[0036] Working principle: When the power module body 2 heats up, the cooling fan 10 operates, drawing outside air through the filter 11 and allowing it to flow along the airflow cavity 12. This airflow exchanges heat with the heatsink 4, connecting rod 5, and buffer plate 6, cooling the power module body 2. As the airflow passes through the vent 13, some of the heat-carrying air escapes through the vent 13, reducing the overall temperature of the airflow in the airflow cavity 12 and preventing the airflow from reducing its cooling effect on areas far from the cooling fan 10. When the power module body 2 is vibrated, it causes the heatsink 4 to move inside the housing 1. The connecting rod 5 slides on the buffer plate 6, and the bottom end of the connecting rod 5 rubs against the friction layer, converting the energy of vibration into heat generated by friction and consuming it to reduce the vibration of the power module body 2. When the internal components of the power module body 2 need to be repaired, the pull rod 17 is pulled outward to disengage the limiting rod 16 from the power module body 2, and the connection between the power module body 2 and the heat sink 4 is released. The protrusion 19 moves with the pull rod 17. When the limiting rod 16 is completely disengaged from the power module body 2, the sliding cooperation between the protrusion 19 and the mounting block 15 is released. The pull rod 17 is rotated, and the protrusion 19 is used to limit the pull rod 17.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A compact power supply module, characterized in that, The device includes a housing (1), on which a heat sink (4) is supported by multiple shock-absorbing components on the inner wall of the bottom of the housing (1). The heat sink (4) slides with the inner wall of the housing (1). A power module body (2) is provided at the top of the heat sink (4). An airflow cavity (12) is formed between the heat sink (4) and the inner wall of the bottom of the housing (1). A plurality of air inlets (3) communicating with the airflow cavity (12) are provided at one end of the housing (1). A cooling fan (10) is installed inside the air inlet (3). A filter screen (11) is provided on one side of the cooling fan (10). A through hole opposite to the air inlet (3) is provided on the side wall of the housing (1) away from the air inlet (3).

2. The compact power module according to claim 1, characterized in that, The airflow cavity (12) has multiple air vents (13) at its bottom end, with one end of each air vent (13) tilting downwards.

3. A compact power module according to claim 1, characterized in that, The shock-absorbing assembly includes a buffer plate (6) and a cavity (7). The buffer plate (6) is fixed to the inner wall of the bottom end of the housing (1). The cavity (7) is opened inside the buffer plate (6). A connecting rod (5) is slidably connected inside the buffer plate (6).

4. A compact power module according to claim 3, characterized in that, Limiting blocks (9) are provided on both sides of the top of the cavity (7). The limiting blocks (9) are in a limiting sliding fit with the connecting rod (5). A friction layer is provided on the inner wall of the cavity (7). The top of the connecting rod (5) is connected to the heat sink (4).

5. A compact power module according to claim 3, characterized in that, The bottom end of the connecting rod (5) is connected to a buffer spring (8), and the other end of the buffer spring (8) is connected to the bottom end of the cavity (7). The main bodies of the connecting rod (5), the buffer plate (6) and the limiting block (9) are all made of materials with high thermal conductivity.

6. A compact power module according to claim 1, characterized in that, The housing (1) has a clearance groove (14) on its side wall. An installation block (15) is slidably connected to the inner wall of the clearance groove (14). The installation block (15) is connected to the heat sink (4). A fixing component is provided inside the installation block (15).

7. A compact power module according to claim 6, characterized in that, The fixing component includes a pull rod (17) and a limiting rod (16). The pull rod (17) is slidably connected to the inner wall of the mounting block (15). The other end of the limiting rod (16) is inserted into the power module body (2). One end of the pull rod (17) is connected to the limiting rod (16).

8. A compact power module according to claim 7, characterized in that, A limiting spring (18) is sleeved on the outside of the pull rod (17). The two ends of the limiting spring (18) are connected to the mounting block (15) and the limiting rod (16) respectively. A protrusion (19) is fixed on one side of the outer wall of the pull rod (17). The protrusion (19) is slidably engaged with the mounting block (15). There is a groove between one end of the protrusion (19) and the limiting rod (16) for limiting the engagement between the protrusion (19) and the mounting block (15).

Images