Charging pile heat dissipation structure

Abstract

A charging pile heat dissipation structure comprises a cabinet door, and at least one heat dissipation hole is formed in the cabinet door. An air cavity is formed in the cabinet door, and at least one centrifugal fan is fixedly arranged in the air cavity; a centrifugal air duct and a direct-flow air duct are formed in the air cavity; the two ends of the flow channel partition plate are welded to the bottom of the cabinet door heat dissipation hole and the inner side face of the bottom of the air cavity respectively. The two ends of the flow channel partition plate are welded to the bottom of the cabinet door heat dissipation hole and the inner side face of the air cavity respectively. Air enters the centrifugal air duct from the air outlet of the centrifugal fan, enters the direct-current air duct through the flow channel partition plate, and is finally discharged from the heat dissipation holes. The charging pile can dissipate heat more efficiently, and is large in air volume and low in air volume loss rate. In addition, according to the charging pile heat dissipation structure, a heat dissipation structure and a flow channel structure are combined into a whole, and the heat dissipation performance and the waterproof performance are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of charging piles, and in particular relates to a heat dissipation structure of a charging pile. Background Art

[0002] New energy vehicle charging piles are an important logistical part to maintain the energy supply of new energy electric vehicles and ensure the convenient travel of new energy vehicles. At present, there are many types of charging piles on the market, and there are also many types of power sizes; the current technology of the charging pile industry is also relatively mature, but the difficulties that plague the charging pile industry are also prominent, such as heat dissipation, waterproof and dustproof, etc. The following will explain these difficulties.

[0003] Since the charging module inside the charging pile generates a lot of heat, the fan inside the charging pile is particularly important. There are two types of fans used on the market to solve the problem of heat dissipation of charging piles, namely axial flow fans and centrifugal fans. The air volume provided by axial flow fans is limited. For some low-power charging piles, axial flow fans can still be used. If it is some medium-power or high-power charging piles, there are many charging modules inside, and the heat generation is particularly serious, so axial flow fans cannot meet these requirements. The medium-power and high-power charging piles on the market that use axial flow fans have poor heat dissipation performance and are prone to overheating protection. In severe cases, malfunctions occur. Therefore, for medium-power and high-power charging piles, in order to better dissipate heat, some charging piles use centrifugal fans, but the air ducts still use air ducts similar to axial flow, and the air volume loss rate is high, which cannot achieve good heat dissipation of the charging piles. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to effectively solve the heat dissipation problem inside a charging pile. The utility model provides a heat dissipation structure of a charging pile.

[0005] The technical solution of the utility model is specifically as follows:

[0006] A charging pile heat dissipation structure comprises a cabinet door, wherein at least one heat dissipation hole is arranged on the cabinet door; an air cavity is arranged inside the cabinet door, and at least one centrifugal fan is fixedly arranged in the air cavity; a centrifugal air duct and a direct current air duct are formed in the air cavity;

[0007] A flow channel partition is arranged at the bottom of the heat dissipation hole of the cabinet door and the inner side of the bottom of the air cavity, and the two ends of the flow channel partition are respectively welded to the bottom of the heat dissipation hole of the cabinet door and the inner side of the air cavity; the wind enters the centrifugal air duct from the air outlet of the centrifugal fan, turns through the flow channel partition to enter the direct current air duct, and finally is discharged from the heat dissipation hole.

[0008] The flow channel partition is in an inclined state with an inclination angle of 15°.

[0009] A reinforcing member is arranged at a cabinet door fixing position corresponding to the centrifugal fan, a centrifugal fan fixing member is arranged on the reinforcing member, a centrifugal fan is arranged on the centrifugal fan fixing member, and a brushless DC motor is arranged on the centrifugal fan.

[0010] An air guide ring is arranged at the air inlet of the centrifugal fan.

[0011] The air guide ring is assembled on the air guide ring fixing part by bolting, the air guide ring fixing part and the air cavity are assembled by bolting, and a positioning pin is provided at the corresponding assembly position on the air cavity, and the positioning pin is fixed to the air cavity by riveting.

[0012] The heat dissipation holes have a hexagonal hole structure.

[0013] A fine steel mesh is welded at the heat dissipation holes on the cabinet door.

[0014] The beneficial effects of the utility model are as follows: the heat dissipation structure of the charging pile enables the charging pile to dissipate heat more efficiently, with large air volume and low air volume loss rate. Moreover, the heat dissipation structure of the charging pile combines the heat dissipation structure and the flow channel structure into one, and the heat dissipation and waterproof performance are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 It is a rear view of the utility model;

[0018] Figure 4 It is a partial stereogram of the utility model;

[0019] Figure 5 This is the wind direction flow state diagram. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 , Figure 2 , Figure 3As shown, a heat dissipation structure of a charging pile includes a cabinet door 8, on which at least one heat dissipation hole 13 is arranged; an air cavity 4 is arranged inside the cabinet door 8, in which at least one centrifugal fan 1 is fixedly arranged, and a reinforcement member 9 is arranged at the cabinet door fixing position corresponding to the centrifugal fan 1, on which a centrifugal fan fixing member 10 is arranged, on which the centrifugal fan fixing member 10 is arranged the centrifugal fan 1, and on which a brushless DC motor 3 is arranged the centrifugal fan 1; after the centrifugal fan 1 is fixed, a centrifugal air duct 5 and a DC air duct 6 are formed in the air cavity 4; and an air guide ring 2 is arranged at the air inlet of the centrifugal fan 1.

[0022] It should be noted that the centrifugal fan 1 is fixed within the air cavity 4, but since the centrifugal fan 1 is heavy, if the centrifugal fan 1 is directly fixed on the cabinet door 8, it is easy to cause deformation of the cabinet door 8, affecting the appearance and performance of the charging pile. In order to avoid the above problems, a reinforcement 9 is welded at the cabinet door fixing position corresponding to the centrifugal fan 1, and the centrifugal fan 1 is fixed on the reinforcement 9 to increase the strength of the cabinet door 8 and avoid deformation of the cabinet door 8; because the weight of the centrifugal fan 1 will be transferred to the reinforcement 9, it is required that the reinforcement 9 be fully welded along the edges and the welding points be smoothed to ensure the strength of the entire cabinet door 8.

[0023] In addition, the core component of the centrifugal fan 1 is the brushless DC motor 3. The centrifugal fan 1 is fixed by the threaded holes on the brushless DC motor 3. Since the reinforcement 9 is welded to the cabinet door 8, the centrifugal fan 1 cannot be directly assembled on the reinforcement 9. Therefore, a centrifugal fan fixing part 10 is designed. The centrifugal fan 1 is fixed on the centrifugal fan fixing part 10, and then the centrifugal fan fixing part 10 is assembled on the reinforcement 9 by bolting. During assembly, the two holes on the upper end of the centrifugal fan fixing part 10 are set in a "gourd" shape to facilitate the assembly of the centrifugal fan fixing part 10.

[0024] Furthermore, the air cavity 4 is fixed to the cabinet door by welding. The function of the air cavity 4 is to form a closed space. A flow channel partition 7 is provided at the bottom of the heat dissipation hole 13 of the cabinet door 8 and the inner side of the bottom of the air cavity 4. The two ends of the flow channel partition 7 are respectively welded to the bottom of the heat dissipation hole 13 of the cabinet door 8 and the inner side of the air cavity 4. The full welding ensures that there is no wind leakage when the centrifugal fan 1 is working. In this way, the air outlet of the centrifugal fan 1 is the centrifugal air duct 5. The wind passes through the flow channel partition 7 and turns into the DC air duct 6, and finally discharged from the heat dissipation hole 13. It should be noted that there is no sheet metal between the centrifugal air duct 5 and the DC air duct 6, and both are part of the air cavity 4.

[0025] Furthermore, the flow channel partition plate 7 is in an inclined state, and the inclination angle is 15°.

[0026] Furthermore, the heat dissipation hole 13 is a hexagonal hole structure, which can be processed by a CNC punching machine or laser cutting. The hexagonal hole structure 13 serves as a heat dissipation hole of the cabinet.

[0027] Preferably, a fine steel mesh 14 is welded at the heat dissipation holes 13 on the cabinet door 8 to prevent dust and impurities in the outside air from entering the charging pile.

[0028] Furthermore, the air guide ring 2 is assembled on the air guide ring fixing part 11 by bolting, and the air guide ring fixing part 11 and the air cavity 4 are assembled by bolting. A positioning pin 12 is provided at the corresponding assembly position on the air cavity 4, and the positioning pin 12 is fixed to the air cavity 4 by riveting, so as to facilitate the assembly of the air guide ring fixing part 11.

[0029] Finally, in order to ensure the safety of manual assembly and debugging, and to prevent large impurities from entering the air duct, a mesh cover 15 is installed on the inner side of the air guide ring 2 to meet the overall requirements of the charging pile.

[0030] The working principle of the utility model is:

[0031] The fan adopted in the present invention is a centrifugal fan 1. In order to better exert the performance of the centrifugal fan 1 and reduce energy loss, a heat dissipation structure suitable for and matching the centrifugal fan needs to be designed inside the charging pile, that is, there needs to be an air duct suitable for the centrifugal fan inside the charging pile. When the centrifugal fan 1 is working, the air flow path in the wind cavity is vortex-shaped, which is consistent with the direction of the centrifugal force. Considering the processing technology of the sheet metal of the charging pile, it is necessary to design a centrifugal air duct 5 suitable for the centrifugal fan within the process range of the sheet metal, so that the ventilation direction of the air duct is kept close to the air flow direction in the wind cavity, so that the air in the wind cavity can be thrown out more efficiently; on the other hand, the air inlet and outlet directions of the charging pile as a whole are consistent with the fixed direction of the centrifugal fan 1, that is, the air inlet and outlet directions of the charging pile as a whole are consistent with the direction of the central axis of the vortex formed by the air in the wind cavity, and the directions of the two satisfy the "right-hand rule", so Therefore, it is necessary to convert the direction of the wind thrown out of the centrifugal air duct 5 to be consistent with the air inlet and outlet direction of the whole machine, that is, it is necessary to design a DC air duct 6, and use a flow channel partition 7 with a slope to convert the air outlet direction. The DC air duct 6 structure exists at the rear end of the centrifugal air duct 5, and the wind in the wind cavity is thrown out along the centrifugal air duct 5, and then enters the DC air duct 6. Since the centrifugal air duct 5 and the DC air duct 6 are both in the same wind cavity 4, the air pressure value P1 in the centrifugal air duct 5 is basically equal to the air pressure value P2 in the DC air duct 6. Due to the existence of the slope of the DC air duct 6, the air in the centrifugal air duct 5 can be smoothly transferred to the DC air duct 6; when the air enters the DC air duct 6, the air pressure value in the DC air duct 6 increases, and the air pressure value P3 in the DC air duct 6 is greater than the external atmospheric pressure P0. In this way, the air in the DC air duct 6 can be better circulated to the outside world. The flow channel partition 7 arranged at the bottom of the DC air duct 6 is in an inclined state with an inclination angle of 15°. The flow channel partition 7 has the same slope sheet metal as the DC air duct 6. When water enters the air outlet of the charging pile from the outside, the water will not accumulate in the DC air duct, and the water will flow to the outside along the partition, with good waterproof performance. At the same time, important components such as centrifugal fans are all on the centrifugal air duct side. The important components are far away from the cabinet door outlet and there are corners, so the waterproof and dustproof performances are good.

[0032] Compared with CN2023226978212 and CN2023112976729 (a composite air duct for a charging pile), the utility model integrates the centrifugal air duct 5 and the DC air duct 6 into an air cavity 4 without partitions and small windows. The wind coming out of the centrifugal air duct 5 is directly discharged into the DC air duct 6, thereby increasing the pressure of the DC air duct 6 and forming a pressure difference between the DC air duct 6 and the outer side thereof, thereby discharging the wind in the DC air duct 6 into the atmosphere. Therefore, the utility model has a simpler structure and high efficiency at the same time.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A charging pile heat dissipation structure, characterized in that: The cabinet door (8) comprises at least one heat dissipation hole (13) provided on the cabinet door (8); an air cavity (4) is provided inside the cabinet door (8), at least one centrifugal fan (1) is fixedly provided inside the air cavity (4); a centrifugal air duct (5) and a direct current air duct (6) are formed inside the air cavity (4); A flow channel baffle (7) is provided at the bottom of the heat dissipation hole (13) of the cabinet door (8) and the inner side surface of the bottom of the air cavity (4), and two ends of the flow channel baffle (7) are respectively welded to the bottom of the heat dissipation hole (13) of the cabinet door (8) and the inner side surface of the air cavity (4); The wind enters the centrifugal air duct (5) from the air outlet of the centrifugal fan (1), passes through the flow channel partition (7), turns and enters the direct current air duct (6), and finally is discharged from the heat dissipation hole (13).

2. A charging pile heat dissipation structure according to claim 1, characterized in that: The flow channel partition (7) is in an inclined state, and the inclination angle is 15°.

3. The heat dissipation structure of a charging pile according to claim 1, characterized in that: A reinforcing member (9) is provided at a cabinet door fixing position corresponding to the centrifugal fan (1), a centrifugal fan fixing member (10) is provided on the reinforcing member (9), the centrifugal fan fixing member (10) is provided on the centrifugal fan (1), and a brushless DC motor (3) is provided on the centrifugal fan (1).

4. The heat dissipation structure of a charging pile according to claim 1, characterized in that: An air guide ring (2) is provided at the air inlet of the centrifugal fan (1).

5. The heat dissipation structure of a charging pile according to claim 4, characterized in that: The air guide ring (2) is assembled on the air guide ring fixing member (11) by bolting, the air guide ring fixing member (11) and the air cavity (4) are assembled by bolting, a positioning pin (12) is provided at a corresponding assembly position on the air cavity (4), and the positioning pin (12) is fixed to the air cavity (4) by riveting.

6. The heat dissipation structure of a charging pile according to claim 1, characterized in that: The heat dissipation hole (13) is a hexagonal hole structure.

7. The heat dissipation structure of a charging pile according to claim 1, characterized in that: A fine steel mesh (14) is welded to the heat dissipation holes (13) on the cabinet door (8).

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