PCB power board assembly

Abstract

The utility model relates to the technical field of power panels, and discloses a PCB power panel assembly, which comprises a power panel body. The heat exchange plate is fixedly connected with the power panel body and used for heat dissipation, a guiding assembly for guiding air is arranged on the wall face of the heat exchange plate and comprises a heat exchange cavity, partitions, air inlet holes and an exhaust pipe, the heat exchange cavity is formed in the bottom of the heat exchange plate, the partitions are arranged in the heat exchange cavity and divide the heat exchange cavity into bent channels, and the air inlet holes are communicated with the air inlet holes. The air suction pipe is fixedly connected with the heat exchange plate and communicates with the heat exchange cavity, air inlet holes communicating with the heat exchange cavity are formed in the wall face of the heat exchange plate, the multiple partitions can guide flowing air to form a snake-shaped bent flowing track, the contact time of cold air and the heat exchange plate can be prolonged, and the contact area of the cold air and the heat exchange plate can be increased. Therefore, heat generated by welding electrical elements on the wall surface of the power panel body can be better and more efficiently taken away, flowing air does not make contact with the power panel body and the electrical elements on the wall surface of the power panel body, and damage of dust to the electrical elements can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power boards, in particular to a PCB power board component. Background Art

[0002] The prior art discloses a PCB power board assembly (CN202320553899.4), comprising: a PCB power board, a cooling chamber and a cooling assembly, the PCB power board is fixedly installed on the inner side of the cooling chamber, the cooling assembly is fixedly installed on the surface of the PCB power board, the cooling assembly comprises a heat exchange channel and a buckle cover, the top of the heat exchange channel is buckled with the surface of the buckle cover, the heat exchange channel comprises a plurality of heat exchange plates and low-temperature channels and circulation channels arranged on both sides of the heat exchange plates, and the surface of the buckle cover is provided with an air inlet end pipe, an air outlet end pipe, a first circulation end pipe and a second circulation end pipe.

[0003] The existing technology achieves heat dissipation for the power board by exchanging heat through air in the chamber. However, the air counter-flow method easily forms turbulence in the chamber, resulting in limited contact time and contact area between the cold air and the heat exchange plate. The heat exchange effect is not ideal and there is room for optimization.

[0004] To this end, we propose a PCB power board assembly. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a PCB power board component.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a PCB power board assembly, comprising a power board body; a heat exchange plate fixedly connected to the power board body for heat dissipation, the wall of the heat exchange plate is provided with a guide assembly for guiding air, the guide assembly comprises a heat exchange cavity, a partition, an air inlet and an exhaust pipe, a heat exchange cavity is provided at the bottom of the heat exchange plate, a plurality of partitions are provided in the heat exchange cavity, the partitions divide the heat exchange cavity and form a bent channel, the exhaust pipe is fixedly connected to the heat exchange plate and communicated with the heat exchange cavity, the wall of the heat exchange plate is provided with an air inlet connected with the heat exchange cavity, air enters from the air inlet and is discharged from the exhaust pipe to take away the heat conducted to the heat exchange plate by the power board body.

[0007] As a preferred embodiment of the present invention, the heat exchange plate forms a rectangular plate structure adapted to the power board body, the heat exchange cavity is a rectangular groove, and the inner wall surfaces on both sides opposite to each other of the heat exchange plate are fixedly connected to a plurality of partitions.

[0008] As a preferred embodiment of the present invention, the partition forms a rectangular plate structure, the length of the partition is smaller than the width of the heat exchange cavity, the partitions of the heat exchange plate relative to the inner wall are distributed alternately and separate the heat exchange cavity into a zigzag channel.

[0009] As a preferred embodiment of the present invention, a sealing plate is provided at the bottom of the heat exchange plate, and the sealing plate is locked and fixed to the heat exchange plate by bolts to seal the heat exchange cavity.

[0010] As a preferred embodiment of the present invention, the opposite side walls of the heat exchange plate are provided with the same air inlet holes, and the air extraction pipe is located in one of the air inlet holes.

[0011] As a preferred embodiment of the utility model, the wall surface of the heat exchange plate is provided with positioning holes, which correspond one-to-one to the mounting holes of the power board body. An elastic member for support is provided in the positioning hole, and the elastic member includes an integrally formed support body and an extension body, and the extension body is inserted into the positioning hole.

[0012] As a preferred embodiment of the utility model, the extension body forms a circular tube structure, the support body is an annular plate structure, the support body is fixedly connected to the end of the extension body and contacts the bottom of the heat exchange plate, and a plurality of deformation grooves are evenly arranged on the bottom surface of the support body.

[0013] Beneficial Effects

[0014] The utility model provides a PCB power board assembly, which has the following beneficial effects:

[0015] 1. In this PCB power board assembly, external cold air enters the heat exchange cavity from the air inlet and is guided by multiple partitions and then extracted from the exhaust pipe. The multiple partitions can guide the flowing air to form a serpentine curved flow trajectory, which can increase the contact time and contact area between the cold air and the heat exchange plate, and thus can better and more efficiently take away the heat generated by the welded electrical components on the wall of the power board body. At the same time, the flowing air does not contact the power board body and the electrical components on the wall of the power board body, which can reduce the damage of dust to the electrical components. The overall volume is small, the space occupied is small, and it is conducive to the overall layout and installation.

[0016] 2. This PCB power board assembly, by setting a support body and an extension body, inserting the extension body into the positioning hole on the wall of the heat exchange plate, when the power board body is installed on the equipment by using bolts, the bolts press the bottom of the heat exchange plate, and the elastic contact between the heat exchange plate and the equipment can be achieved through the rubber support body, and the support body with a deformation groove can produce a larger deformation amplitude, reducing the damage and desoldering of electrical components caused by vibration transmission to the power board body, and has better installation stability and anti-vibration and anti-fall effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of installing a heat exchange plate on the power board body of the utility model;

[0019] Figure 3 This is a three-dimensional diagram of the heat exchange plate of the utility model;

[0020] Figure 4 This is a bottom-up stereoscopic view of the heat exchange plate of the utility model;

[0021] Figure 5 It is a three-dimensional diagram of the support body and the extension body of the utility model.

[0022] Legend: 10, power board body; 11, heat exchange plate; 20, heat exchange cavity; 21, partition; 22, air inlet; 23, exhaust pipe; 30, support body; 31, extension body; 32, deformation groove. DETAILED DESCRIPTION

[0023] A PCB power board component, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a power board body 10; a heat exchange plate 11 fixedly connected to the power board body 10 for heat dissipation, a wall surface of the heat exchange plate 11 is provided with a guide component for guiding air, the guide component includes a heat exchange cavity 20, a partition 21, an air inlet 22 and an exhaust pipe 23, a heat exchange cavity 20 is opened at the bottom of the heat exchange plate 11, a plurality of partitions 21 are arranged in the heat exchange cavity 20, the partitions 21 divide the heat exchange cavity 20 and form a bent channel, the exhaust pipe 23 is fixedly connected to the heat exchange plate 11 and connected to the heat exchange cavity 20 The wall surface of the heat exchange plate 11 is provided with an air inlet 22 connected with the heat exchange cavity 20, and air enters from the air inlet 22 and is discharged from the exhaust pipe 23 to take away the heat conducted to the heat exchange plate 11 by the power board body 10. The heat exchange plate 11 forms a rectangular plate structure adapted to the power board body 10, and the heat exchange cavity 20 is a rectangular groove. The inner wall surfaces on both sides of the heat exchange plate 11 are fixedly connected with a plurality of partitions 21, and the partitions 21 form a rectangular plate structure. The length of the partitions 21 is less than the width of the heat exchange cavity 20. The heat exchange plate 1 The partitions 21 on the inner wall of the heat exchange plate 11 are arranged alternately and separate the heat exchange cavity 20 into a zigzag channel. The opposite side walls of the heat exchange plate 11 are provided with the same air inlet holes 22, and the exhaust pipe 23 is located in one of the air inlet holes 22. In this solution, it should be noted that the exhaust pipe 23 needs to be connected to an exhaust component, such as a duct fan. The exhaust pipe 23 can be connected to the air inlet end of the duct fan through a hose to exhaust the heat exchange cavity 20. The external cold air enters the heat exchange cavity 20 from the air inlet holes 22 and is guided by a plurality of partitions 21 and then is extracted from the exhaust pipe 23. The plurality of partitions 21 can guide the flowing air to form a serpentine curved flow trajectory, which can increase the contact time and contact area between the cold air and the heat exchange plate 11, thereby better and more efficiently taking away the heat generated by the welding of the electrical components on the wall of the power board body 10. At the same time, the flowing air does not contact the power board body 10 and the electrical components on the wall of the power board body 10, which can reduce the damage of dust to the electrical components.

[0024] like Figure 2 A sealing plate is provided at the bottom of the heat exchange plate 11, which is fastened to the heat exchange plate 11 by bolts and seals the heat exchange chamber 20. The heat exchange chamber 20 is sealed by setting the sealing plate. The detachable sealing plate can clean dust from the partition 21 in the heat exchange chamber 20, which is convenient for later maintenance.

[0025] like Figure 4 and Figure 5 As shown, the wall surface of the heat exchange plate 11 is provided with a positioning hole, and the positioning hole corresponds to the mounting hole of the power board body 10 one by one. An elastic member for support is provided in the positioning hole, and the elastic member includes an integrally formed support body 30 and an extension body 31. The extension body 31 is inserted into the positioning hole, and the extension body 31 forms a circular tube structure. The support body 30 is an annular plate structure. The support body 30 is fixedly connected to the end of the extension body 31 and contacts the bottom of the heat exchange plate 11. The bottom surface of the support body 30 is evenly provided with a plurality of deformation grooves 32. In this scheme, as a supplement to the above scheme, It is explained that by setting the support body 30 and the extension body 31, the extension body 31 is inserted into the positioning hole on the wall of the heat exchange plate 11, and when the power board body 10 is installed on the equipment by using bolts, the bolts press the bottom of the heat exchange plate 11, and the elastic contact between the heat exchange plate 11 and the equipment can be achieved through the rubber support body 30, and the support body 30 with the deformation groove 32 can produce a larger deformation amplitude, thereby reducing the damage and desoldering of electrical components caused by vibration transmitted to the power board body 10, and has better installation stability and shock and drop resistance effects.

[0026] The working principle of the utility model is as follows: external cold air enters the heat exchange chamber 20 from the air inlet 22 and is guided by multiple partitions 21 and then extracted from the exhaust pipe 23. The multiple partitions 21 can guide the flowing air to form a serpentine flow trajectory, which promotes the cold air to take away the heat transmitted from the power board body 10 to the heat exchange plate 11, thereby improving the heat dissipation effect. The extension body 31 is inserted into the positioning hole on the wall of the heat exchange plate 11. When the power board body 10 is installed on the equipment with bolts, the bolts press the bottom of the heat exchange plate 11 tightly. The rubber support body 30 can achieve elastic contact between the heat exchange plate 11 and the equipment, and the support body 30 with a deformation groove 32 can produce a larger deformation amplitude, reduce the vibration transmitted to the power board body 10, and achieve elastic installation.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A PCB power board assembly, comprising a power board body (10); a heat exchange plate (11) fixedly connected to the power board body (10) for heat dissipation, characterized in that: The wall surface of the heat exchange plate (11) is provided with a guide component for guiding air, and the guide component includes a heat exchange cavity (20), a partition (21), an air inlet (22) and an exhaust pipe (23). The heat exchange cavity (20) is provided at the bottom of the heat exchange plate (11), and a plurality of partitions (21) are provided in the heat exchange cavity (20). The partitions (21) divide the heat exchange cavity (20) and form a bent channel. The exhaust pipe (23) is fixedly connected to the heat exchange plate (11) and communicated with the heat exchange cavity (20). The wall surface of the heat exchange plate (11) is provided with an air inlet (22) communicated with the heat exchange cavity (20). Air enters from the air inlet (22) and is discharged from the exhaust pipe (23) to take away the heat transferred from the power board body (10) to the heat exchange plate (11).

2. The PCB power board assembly according to claim 1, characterized in that: The heat exchange plate (11) forms a rectangular plate structure adapted to the power board body (10); the heat exchange cavity (20) is a rectangular groove; and the inner wall surfaces on both sides opposite to each other of the heat exchange plate (11) are fixedly connected to a plurality of partitions (21).

3. The PCB power board assembly according to claim 1, characterized in that: The partition (21) forms a rectangular plate structure, the length of the partition (21) is smaller than the width of the heat exchange cavity (20), and the partitions (21) of the heat exchange plates (11) are distributed alternately relative to the inner wall surface and divide the heat exchange cavity (20) into a zigzag channel.

4. The PCB power board assembly according to claim 1, characterized in that: A sealing plate is provided at the bottom of the heat exchange plate (11), and the sealing plate is locked and fixed to the heat exchange plate (11) by bolts to seal the heat exchange cavity (20).

5. The PCB power board assembly according to claim 1, characterized in that: The heat exchange plate (11) has two opposite side walls formed with the same air inlet holes (22), and the air extraction pipe (23) is located in one of the air inlet holes (22).

6. The PCB power board assembly according to claim 1, characterized in that: The wall surface of the heat exchange plate (11) is provided with a positioning hole, which corresponds one-to-one with the mounting hole of the power board body (10). An elastic member for support is provided in the positioning hole, and the elastic member includes an integrally formed support body (30) and an extension body (31), and the extension body (31) is inserted into the positioning hole.

7. The PCB power board assembly according to claim 6, characterized in that: The extension body (31) forms a circular tube structure, the support body (30) is an annular plate structure, the support body (30) is fixedly connected to the end of the extension body (31) and contacts the bottom of the heat exchange plate (11), and a plurality of deformation grooves (32) are evenly arranged on the bottom surface of the support body (30).

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