New energy vehicle outdoor charging pile power distribution cabinet

Abstract

The invention discloses a new energy vehicle outdoor charging pile power distribution cabinet, and belongs to the technical field of power distribution cabinets, the power distribution cabinet comprises a cabinet body, a mounting frame and a mounting plate, the plane where the mounting frame is located divides the space in the cabinet body into a heat dissipation cavity and a working cavity, and the mounting plate comprises a first heat exchange panel, a second heat exchange panel and a plurality of first heat pipes; the first heat exchange panel faces the heat dissipation cavity, the second heat exchange panel faces the working cavity, the first heat pipe comprises an evaporation end and a condensation end, the evaporation end is connected with the second heat exchange panel, and the condensation end is connected with the first heat exchange panel. According to the invention, the heat dissipation effect can be improved while full sealing is realized; external air only flows in the heat dissipation cavity, so that electrical components in the working cavity are not influenced; hot air at the top in the working cavity is subjected to heat exchange through the vapor chamber, and the overall heat dissipation effect is improved; and air in the inverted U-shaped top cover can quickly flow under the condition that an additional fan is not required to be arranged, so that the heat dissipation effect of the vapor chamber is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution cabinets, and in particular relates to a power distribution cabinet for an outdoor charging pile of a new energy vehicle. Background Art

[0002] The power distribution cabinet for outdoor charging piles of new energy vehicles is an electrical cabinet used in conjunction with charging piles. Its main functions include the following aspects: Power distribution: The distribution cabinet distributes power to various electrical equipment through power lines to ensure the normal operation of the charging pile system; Power conversion and regulation: The distribution cabinet can convert the AC power provided by the power grid into DC power suitable for charging electric vehicle batteries, and adjust the output voltage and current according to the specific needs of electric vehicles to ensure that the charging process is both fast and safe; Protection function: The distribution cabinet has a variety of built-in protection devices, such as overload protection, short circuit protection and leakage protection, to prevent electrical equipment from malfunctioning during operation. These protection measures can effectively avoid safety hazards such as fire and electrical accidents, and ensure the safety of electric vehicles and their charging equipment. Since the electrical components in the distribution cabinet generate heat when working, the distribution cabinet needs to be cooled. The existing heat dissipation method is generally to set air inlets and air outlets on the wall of the distribution cabinet, and use a cooling fan to exhaust the hot air in the cabinet from the air outlet, and the outside air enters the distribution cabinet from the air inlet. In order to prevent dust or water vapor carried by the outside air from entering the distribution cabinet, a filter is generally set at the air inlet. However, the outdoor distribution cabinet is set outdoors, and the use environment is more complicated. It is difficult to prevent external dust or water vapor from entering the distribution cabinet by setting a filter, which is not conducive to the long-term safe use of the distribution cabinet. If a fully enclosed cabinet is set, it cannot meet the heat dissipation requirements. Summary of the invention

[0003] In view of the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide a power distribution cabinet for an outdoor charging pile of a new energy vehicle, which improves the heat dissipation effect inside the cabinet while sealing the cabinet.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A power distribution cabinet for an outdoor charging pile of a new energy vehicle comprises a cabinet body, an installation frame arranged in the cabinet body, and an installation plate detachably connected to the installation frame, wherein the plane where the installation frame is located divides the space in the cabinet body into a heat dissipation chamber and a working chamber, the installation plate comprises a first heat exchange panel, a second heat exchange panel, and a plurality of first heat pipes arranged between the first heat exchange panel and the second heat exchange panel, the first heat exchange panel faces the heat dissipation chamber and performs heat exchange with the air in the heat dissipation chamber, the second heat exchange panel faces the working chamber and performs heat exchange with the air in the working chamber, the first heat pipe comprises an evaporation end and a condensation end, the evaporation end is connected to the second heat exchange panel, and the condensation end is connected to the first heat exchange panel.

[0006] Preferably, the first heat exchange panel is provided with a first fin group, and the first fin group is located in the heat dissipation cavity, and the second heat exchange panel is provided with a second fin group, and the second fin group is located in the working cavity.

[0007] Preferably, a first air inlet hole communicating with the heat dissipation cavity is provided at the bottom of the cabinet, a first air outlet hole communicating with the heat dissipation cavity is provided at the top of the cabinet, and a first heat dissipation fan is provided on the top wall of the cabinet at a position corresponding to the first air outlet hole.

[0008] Preferably, a heat spreader is provided on the top of the cabinet, and the heat spreader includes a second evaporation end plate and a second condensation end plate, the second evaporation end plate is located in the working chamber, and the second condensation end plate is located outside the cabinet.

[0009] Preferably, a third fin group is provided on the second evaporation end plate, and a fourth fin group is provided on the second condensation end plate.

[0010] Preferably, an inverted U-shaped top cover covering the fourth fin group is connected to the outer top wall of the cabinet body, the front end of the inverted U-shaped top cover forms a first air inlet channel, and the rear end of the inverted U-shaped top cover forms a first air outlet channel.

[0011] Preferably, a first throttle plate is provided on the outer top wall of the cabinet body at a position corresponding to the first air outlet channel, and a second throttle plate corresponding to the first throttle plate is provided on the inverted U-shaped top cover, and the first throttle plate and the second throttle plate are used to reduce the channel cross-sectional area of ​​the first air outlet channel.

[0012] Preferably, a third throttle plate 73 is provided on the outer top wall of the cabinet body at a position corresponding to the first air outlet hole, and a fourth throttle plate corresponding to the third throttle plate is provided on the inverted U-shaped top cover, and a second air outlet channel is formed between the third throttle plate and the fourth throttle plate, and the airflow formed by the first cooling fan passes through the first air outlet hole and then ejected from the first air outlet channel to form a jet and form a negative pressure at the second air outlet channel.

[0013] Preferably, at least one mounting strip is provided on the second fin set.

[0014] Preferably, the cabinet body includes a back panel, a top panel connected to the back panel, two side panels connected to the top panel, a bottom panel connected to the back panel, and a door panel hinged to the side panels.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0016] 1. The space inside the cabinet is divided into a heat dissipation chamber and a working chamber by setting a mounting frame. The working chamber is used to arrange electrical components. The mounting plate includes a first heat exchange panel, a second heat exchange panel and a first heat pipe. The heat in the working chamber is transferred to the heat dissipation chamber by utilizing the high thermal conductivity of the heat pipe, so that the heat dissipation effect can be improved while achieving full closure;

[0017] 2. A fin group is arranged on the heat exchange panel of the mounting plate to improve the heat exchange effect. The first fin group is located in the heat dissipation cavity. A first heat dissipation fan is arranged in the heat dissipation cavity to introduce external air to dissipate the heat of the first fin group and the first heat exchange panel, thereby improving the heat dissipation effect. At the same time, the external air only flows in the heat dissipation cavity and will not affect the electrical components in the working cavity.

[0018] 3. A mounting bar is provided on the second fin group, and various electrical components are installed on the mounting bar. The heat emitted by the electrical components can be directly transferred to the second fin group through the mounting bar, and the heat transfer effect is good;

[0019] 4. A heat spreader is installed on the top of the cabinet, which is used to exchange heat with the hot air at the top of the working chamber to improve the overall heat dissipation effect;

[0020] 5. The fourth fin group connected to the heat spreader is located outside the cabinet and uses external air to directly dissipate heat. An inverted U-shaped top cover is connected to the top plate of the cabinet to cover the fourth fin. Multiple throttle plates are arranged between the inverted U-shaped top cover and the top plate to reduce the cross-sectional area of ​​the channel. When the first cooling fan exhausts air, negative pressure can be formed at the second air outlet channel. The negative pressure sucks in the air at the front end of the second air outlet channel, thereby forming an airflow from front to back in the inverted U-shaped top cover, accelerating the movement of the airflow in the inverted U-shaped top cover. Without the need to set up an additional fan, the air in the inverted U-shaped top cover can flow quickly, thereby improving the heat dissipation effect of the fourth fin group, thereby improving the heat dissipation effect of the heat spreader. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0022] Figure 2 1 is a schematic diagram of the cabinet structure of an embodiment;

[0023] Figure 3This is a schematic diagram of the front structure of the installation frame of the embodiment;

[0024] Figure 4 This is a schematic diagram of the front structure of the mounting plate of the embodiment;

[0025] Figure 5 is a schematic diagram of the cross-sectional structure of the mounting plate of the embodiment;

[0026] Figure 6 is a schematic diagram of the first heat pipe structure of the embodiment;

[0027] Figure 7 2. It is the appearance diagram of the heat sink of the embodiment;

[0028] Figure 8 Schematic diagram of the internal structure of the heat sink in the embodiment;

[0029] Fig. 9 is a schematic structural diagram of the first air outlet channel of the embodiment;

[0030] Fig.10 This is the airflow direction diagram at the first air outlet channel. DETAILED DESCRIPTION

[0031] The present invention is further illustrated below in conjunction with specific examples. The examples are implemented based on the technical solutions of the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0032] like Figure 1 As shown, a new energy vehicle outdoor charging pile power distribution cabinet includes a cabinet body 1, a mounting frame 2 and a mounting plate 3. The cabinet body 1 is a rectangular cabinet, and the cabinet body 1 includes a back plate 11, a top plate 12, two side plates 13, a bottom plate 14 and a door plate 15. The back plate 11 is vertically arranged, the rear end of the top plate 12 is connected to the back plate 11, and the rear end of the bottom plate 14 is also connected to the back plate 11. The two side plates 13 are connected between the top plate 12 and the bottom plate 14 and are connected to the back plate 11. One side of the door plate 15 is hinged to a side plate 13. The door plate 15 is connected to an existing electrical cabinet handle lock, and the door plate 15 can be opened or closed. A sealing ring strip is arranged on the inner side of the door plate 15. After the door plate 15 is closed, the sealing ring strip plays a sealing role to prevent external dust or water vapor from entering the cabinet body 1.

[0033] like Figure 1 , Figure 2 and Figure 3As shown, the mounting frame 2 is located in the cabinet 1 parallel to the back panel 11, and is arranged at the rear end where the back panel 11 is located. The distance from the mounting frame 2 to the back panel 11 is smaller than the distance from the mounting frame 2 to the door panel 15. The mounting frame 2 is a rectangular frame. The top of the mounting frame 2 is connected to the top wall of the top panel 12, and the lower end is connected to the bottom wall of the bottom panel 14. The two sides of the mounting frame 2 are respectively connected to the side walls of the two side panels 13 on both sides, so that the plane where the mounting frame 2 is located divides the space in the cabinet 1 into a heat dissipation cavity 101 and a working cavity 102, and the volume of the working cavity 102 is larger than the volume of the heat dissipation cavity 101. A first through hole 201 corresponding to the mounting plate 3 is provided in the middle position of the mounting frame 2, and the heat dissipation cavity 101 is connected with the working cavity 102 through the first through hole 201. A plurality of first threaded holes 22 are provided on the mounting frame 2, and a second through hole 301 is provided on the mounting plate 3 at a position corresponding to the first threaded hole 22. A first connecting bolt 21 corresponding to the first threaded hole 22 penetrates through the second through hole 301, and the mounting plate 3 is detachably connected to the mounting frame 2 through the plurality of first connecting bolts 21. When the mounting plate 3 is connected to the mounting frame 2, the first through hole 201 is closed, so that the heat dissipation cavity 101 is no longer connected with the working cavity 102. In order to improve the sealing effect, an annular sealing groove 23 is provided on the mounting frame 2, and a sealing ring is provided in the annular sealing groove 23. After the mounting plate 3 is connected to the mounting frame 2, the sealing ring is pressed tightly, and the sealing effect is good.

[0034] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the mounting plate 3 includes a first heat exchange panel 31, a second heat exchange panel 32, a plurality of first heat pipes 33, a first fin group 34, a second fin group 35, a mounting strip 36 and an edge plate 37. The mounting plate 3 is vertically arranged as a whole, the first heat exchange panel 31 faces the heat dissipation cavity 101, and the second heat exchange panel 32 faces the working cavity 102. A plurality of first heat pipes 33 are arranged between the first heat exchange panel 31 and the second heat exchange panel 32. The first heat pipe 33 adopts an existing heat pipe. The heat transfer efficiency of the heat pipe is dozens or even hundreds of times that of heat conductive materials such as copper, and the heat conduction efficiency is extremely high. The first heat pipe 33 includes a tube shell 331 and a first liquid wick 332 arranged in the first tube shell 331. The end of the first heat pipe 33 close to the second heat exchange panel 32 is an evaporation end, and the evaporation end is connected to the second heat exchange panel 32. The end of the first heat pipe 33 close to the first heat exchange panel 31 is a condensation end. The first heat exchange panel 31 is connected to the second heat exchange panel 31, the first heat pipe 33 is inclined, the condensation end is higher than the evaporation end, and the first tube shell 331 is filled with an appropriate amount of working liquid. During operation, the second heat exchange panel 32 is heated, so that the evaporation end of the first heat pipe 33 is heated, the working liquid evaporates, and the evaporated working medium flows to the condensation end to release heat and condense into liquid. The first liquid wick 332 is formed by sintering copper powder. Under the action of the capillary force of the first liquid wick 332, the working liquid returns to the evaporation end, thereby realizing heat transfer, and transferring the heat of the second heat exchange panel 32 to the first heat exchange panel 31. Since the second heat exchange panel 32 faces the working chamber 102, it can exchange heat with the air in the working chamber 102. The first heat exchange panel 31 faces the heat dissipation chamber 101, so it can exchange heat with the air in the heat dissipation chamber 101, and the heat in the working chamber 102 is transferred to the heat dissipation chamber 101. In order to improve the heat exchange effect, the first heat exchange panel 31 is provided with a first fin group 34, which includes a plurality of fins arranged in parallel, the fins of the first fin group 34 are perpendicular to the bottom plate 14, and the first fin group 34 is located in the heat dissipation cavity 101, which can increase the heat exchange area of ​​the first heat exchange panel 31. The second heat exchange panel 32 is provided with a second fin group 35, which also includes a plurality of fins arranged in parallel, the fins of the second fin group 35 are perpendicular to the bottom plate 14, and the second fin group 35 is located in the working cavity 102, which can increase the heat exchange area of ​​the second heat exchange panel 32. The second fin group 35 is provided with one or more mounting bars 36, and the mounting bars 36 are made of aluminum alloy or copper. The mounting bars 36 and the fins of the second fin group 35 can be welded or detachably connected by bolts. The mounting bars 36 are used to install various electrical components, and the heat emitted by the electrical components can be directly transferred to the second fin group 35 through the mounting bars 36. The edge plate 37 is connected to the edge of the second heat exchange panel 32 , and a plurality of second through holes 301 are provided on the edge plate 37 . The edge plate 37 facilitates the connection of the mounting plate 3 as a whole with the mounting frame 2 .

[0035] like Figure 1 and Figure 2As shown, the bottom plate 14 of the cabinet 1 is provided with a first air inlet 41 (the first air inlet 41 can also be set at the lower end of the back plate 11, and it can be reasonably selected according to the installation environment), and there are multiple first air inlet holes 41, which are connected to the heat dissipation cavity 101. The top plate 12 of the cabinet 1 is provided with a first air outlet 42, and there are multiple first air outlet holes 42 along the top plate 12, and the first air outlet hole 42 is connected to the heat dissipation cavity 101. The heat dissipation cavity 101 is provided with a first cooling fan 4, which is connected to the top wall of the top plate 12 and corresponds to the first air outlet 42. The installation frame 2 is reserved with a reserved through hole (not shown in the figure) for the power cord of the first cooling fan 4 to pass through, which is blocked with fireproof plugging material later. Multiple first cooling fans 4 are provided and correspond to multiple first air outlet holes 42 one by one. When the first cooling fan 4 is working, external air enters the cooling chamber 101 from the first air inlet 41, moves upward through the first fin group 34, and moves upward after the external air exchanges heat with the first fin group 34, and is discharged from the first air outlet 42 under the action of the first cooling fan 4. When the first cooling fan 4 is working, the external air is used to cool the first fin group 34, and then the electrical components in the working chamber 102 are cooled. After the installation plate 3 is set, the cooling chamber 101 and the working chamber 102 are completely disconnected, and dust or water vapor entering from the first air inlet 41 cannot enter the working chamber 102, which is conducive to the long-term safe operation of the electrical components in the working chamber 102.

[0036] like Figure 1 , Figure 3 , Figure 7 and Figure 8As shown, a heat spreader 5 is provided on the top of the cabinet 1, and a third through hole corresponding to the heat spreader 5 is provided on the top plate 12 of the cabinet 1, and the heat spreader 5 is installed on the top plate 12 through the third through hole. The heat spreader 5 adopts an existing heat spreader, and the heat spreader 5 includes a second evaporation end plate 51, a second condensation end plate 52 and a plurality of support columns 55. The second evaporation end plate 51 and the second condensation end plate 52 are arranged horizontally, and the plurality of support columns 55 are located between the second evaporation end plate 51 and the second condensation end plate 52. A first sintered layer 511 is connected to the second evaporation end plate 51, and a second sintered layer 521 is connected to the second condensation end plate 52. The first sintered layer 511, the second sintered layer 521 and the support columns 55 are all sintered with copper powder, so that the three form a liquid absorption core, and the second evaporation end plate 51 and the second condensation end plate 52 are connected to each other. The working medium is filled with an appropriate amount of working liquid. When working, the second evaporation end plate 51 is heated so that the working liquid in the first sintered layer 511 evaporates, and the evaporated working medium flows to the second condensation end plate 52 to release heat and condense into liquid. Under the action of the capillary force of the second sintered layer 521 and the support column 55, the working liquid returns to the first sintered layer 511, thereby realizing heat transfer, and transferring the heat of the second evaporation end plate 51 to the second condensation end plate 52. The second evaporation end plate 51 is located in the working chamber 102, and the second condensation end plate 52 is located outside the cabinet 1, thereby transferring the heat in the working chamber 102 of the cabinet 1 to the outside of the cabinet 1. In order to improve the heat exchange effect, a third fin group 53 is provided on the second evaporation end plate 51, and the third fin group 53 is located in the working chamber 102, which can increase the heat exchange area of ​​the second evaporation end plate 51. The third fin group 53 also includes a plurality of fins arranged in parallel, and the fins of the third fin group 53 are perpendicular to the back plate 11. A fourth fin group 54 is provided on the second condensation end plate 52, and the fourth fin group 54 is located outside the cabinet 1, which can increase the heat exchange area of ​​the second condensation end plate 52. The fourth fin group 54 also includes a plurality of fins arranged in parallel, and the fins of the fourth fin group 54 are perpendicular to the back plate 11. When the cabinet 1 is put into use, the electrical components installed in the working chamber 102 generate heat, and the hot air in the working chamber 102 naturally rises to exchange heat with the third fin group 53 and the second evaporation end plate 51.

[0037] like Figure 1 and Figure 3 An inverted U-shaped top cover 6 is connected to the outer top wall of the top plate 12. The inverted U-shaped top cover 6 corresponds to the position of the fourth fin group 54 and covers the fourth fin group 54. Both sides of the inverted U-shaped top cover 6 are connected to the top plate 12. The front end opening of the inverted U-shaped top cover 6 forms a first air inlet channel 61, and the rear end opening of the inverted U-shaped top cover 6 forms a first air outlet channel 62. The external air entering the first air inlet channel 61 is discharged from the first air outlet channel 62 after heat exchange with the fourth fin group 54, thereby improving the heat dissipation effect of the heat spreader 5.

[0038] like Figure 1 , Figure 3 , Fig. 9 and Fig.10 As shown, a first throttle plate 71 is provided on the outer top wall at the rear end of the top plate 12, and the first throttle plate 71 extends in the left-right direction of the top plate 12 and is located corresponding to the first air outlet channel 62. A second throttle plate 72 is provided on the inverted U-shaped top cover 6, and the second throttle plate 72 is symmetrically arranged with the first throttle plate 71 up and down, and the rear end of the second throttle plate 72 and the rear end of the first throttle plate 71 gradually approach toward the rear end of the cabinet 1, and the first throttle plate 71 and the second throttle plate 72 reduce the channel cross-sectional area of ​​the first air outlet channel 62, and the first air outlet channel 62 forms a strip-shaped channel, and a third throttle plate 72 is provided on the outer top wall of the top plate 12. Flow plate 73, the third throttle plate 73 corresponds to the position of the first air outlet 42, the third throttle plate 73 extends in the left and right direction of the top plate 12, and a fourth throttle plate 74 is provided on the inverted U-shaped top cover 6. The fourth throttle plate 74 and the third throttle plate 73 are symmetrically arranged up and down, and the third throttle plate 73 and the fourth throttle plate 74 gradually approach each other toward the rear end of the cabinet 1. The third throttle plate 73 and the fourth throttle plate 74 reduce the cross-sectional area of ​​the air flow channel in the inverted U-shaped top cover 6, and a second air outlet channel 63 is formed between the rear end of the third throttle plate 73 and the rear end of the fourth throttle plate 74, and the second air outlet channel 63 is also a strip-shaped channel. When the first cooling fan 4 is working, it supplies air outwards, and the formed airflow is discharged from the first air outlet 42 and then ejected from the second air outlet channel 63 under the joint guidance of the inverted U-shaped top cover 6, the third throttle plate 73, the fourth throttle plate 74, the first throttle plate 71 and the second throttle plate 72 to form a jet. Since the second air outlet channel 63 is a shrinking channel, according to the Bernoulli principle, the air flow velocity will increase and the pressure will decrease, and a negative pressure will be formed at the second air outlet channel 63. The negative pressure sucks in the air at the front end of the second air outlet channel 63, thereby forming an airflow from front to back in the inverted U-shaped top cover 6, accelerating the movement of the airflow in the inverted U-shaped top cover 6, and continuously sucking in external air from the first air inlet channel 61. Without the need to set up an additional fan, the air in the inverted U-shaped top cover 6 can flow quickly, thereby improving the heat dissipation effect on the fourth fin group 54, and thereby improving the heat dissipation effect of the heat spreader 5.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A power distribution cabinet for outdoor charging piles of new energy vehicles, characterized in that: The invention comprises a cabinet (1), an installation frame (2) arranged in the cabinet (1), and an installation plate (3) detachably connected to the installation frame (2); the plane where the installation frame (2) is located divides the space in the cabinet (1) into a heat dissipation chamber (101) and a working chamber (102); the installation plate (3) comprises a first heat exchange panel (31), a second heat exchange panel (32), and a plurality of first heat pipes (33) arranged between the first heat exchange panel (31) and the second heat exchange panel (32); the first heat exchange panel (31) faces the heat dissipation chamber (101) and performs heat exchange with the air in the heat dissipation chamber (101); the second heat exchange panel (32) faces the working chamber (102) and performs heat exchange with the air in the working chamber (102); the first heat pipe (33) comprises an evaporation end and a condensation end; the evaporation end is connected to the second heat exchange panel (32), and the condensation end is connected to the first heat exchange panel (31).

2. The outdoor charging pile power distribution cabinet for new energy vehicles according to claim 1 is characterized in that: The first heat exchange panel (31) is provided with a first fin group (34), and the first fin group (34) is located in the heat dissipation cavity (101); the second heat exchange panel (32) is provided with a second fin group (35), and the second fin group (35) is located in the working cavity (102).

3. The outdoor charging pile power distribution cabinet for new energy vehicles according to claim 2 is characterized in that: The bottom of the cabinet (1) is provided with a first air inlet (41) communicating with the heat dissipation cavity (101); the top of the cabinet (1) is provided with a first air outlet (42) communicating with the heat dissipation cavity (101); and a first heat dissipation fan (4) is provided on the top wall of the cabinet (1) at a position corresponding to the first air outlet (42).

4. The outdoor charging pile power distribution cabinet for new energy vehicles according to claim 3 is characterized in that: A heat spreader (5) is provided on the top of the cabinet (1), and the heat spreader (5) comprises a second evaporation end plate (51) and a second condensation end plate (52), wherein the second evaporation end plate (51) is located in the working chamber (102), and the second condensation end plate (52) is located outside the cabinet (1).

5. The outdoor charging pile power distribution cabinet for new energy vehicles according to claim 4 is characterized in that: The second evaporation end plate (51) is provided with a third fin group (53), and the second condensation end plate (52) is provided with a fourth fin group (54).

6. The outdoor charging pile power distribution cabinet for new energy vehicles according to claim 5 is characterized in that: An inverted U-shaped top cover (6) covering the fourth fin group (54) is connected to the outer top wall of the cabinet body (1), the front end of the inverted U-shaped top cover (6) forming a first air inlet channel (61), and the rear end of the inverted U-shaped top cover (6) forming a first air outlet channel (62).

7. The power distribution cabinet for outdoor charging pile of new energy vehicles according to claim 6 is characterized in that: A first throttle plate (71) is provided on the outer top wall of the cabinet (1) at a position corresponding to the first air outlet channel (62), and a second throttle plate (72) corresponding to the first throttle plate (71) is provided on the inverted U-shaped top cover (6), wherein the first throttle plate (71) and the second throttle plate (72) are used to reduce the channel cross-sectional area of ​​the first air outlet channel (62).

8. The power distribution cabinet for outdoor charging pile of new energy vehicles according to claim 7 is characterized in that: A third throttle plate (73) is provided on the outer top wall of the cabinet (1) at a position corresponding to the first air outlet hole (42); a fourth throttle plate (74) corresponding to the third throttle plate (73) is provided on the inverted U-shaped top cover (6); a second air outlet channel (63) is formed between the third throttle plate (73) and the fourth throttle plate (74); the airflow formed by the first cooling fan (4) passes through the first air outlet hole (42) and is ejected from the first air outlet channel (62) to form a jet and form a negative pressure at the second air outlet channel (63).

9. The outdoor charging pile power distribution cabinet for new energy vehicles according to claim 2, characterized in that: One or more mounting strips (36) are provided on the second fin group (35).

10. The outdoor charging pile power distribution cabinet for new energy vehicles according to claim 1, characterized in that: The cabinet body (1) comprises a back panel (11), a top panel (12) connected to the back panel (11), two side panels (13) connected to the top panel (12), a bottom panel (14) connected to the back panel (11), and a door panel (15) hinged to the side panels (13).

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