High-safety electric vehicle charging pile

Abstract

The invention provides a high-safety electric vehicle charging pile, and relates to the technical field of charging piles, the high-safety electric vehicle charging pile comprises a sealing box body, a partition plate, a transverse plate, a cooling structure and a U-shaped air cooling structure, the cooling structure continuously works to cool gas in a first area to ensure that the temperature of the gas in the first area meets the heat dissipation requirement, and the U-shaped air cooling structure works to cool the gas in the first area. Air in the second area is extracted and blown to the power distribution element, so that heat dissipation of the power distribution element is achieved, after the air in the second area is extracted, negative pressure is formed in the second area, and the air in the first area continuously enters the first area from the bottom channel; by performing gas cooling circulation in the sealed box body, dust and water vapor in external air can be prevented from entering the interior of the charging pile in the using process of the charging pile, and the requirement for efficient heat dissipation is met.

Description

Technical Field

[0001] The invention relates to the technical field of charging piles, in particular to a high-safety electric vehicle charging pile. Background Art

[0002] An electric vehicle charging pile is an important device that provides electric energy for electric vehicles, similar to a gas station for traditional cars. It charges the batteries of electric vehicles by converting the electric energy in the power grid into the DC or AC power required by electric vehicles. DC charging piles are often called "fast charging piles". They can convert AC power into DC power and directly charge the batteries of electric vehicles. They have a fast charging speed and can generally charge a large amount of electricity for electric vehicles in a relatively short period of time. They are suitable for use in highway service areas, large shopping mall parking lots and other places. While pursuing fast charging, the safety of the use of charging piles faces important challenges. The high current in the charging piles generates a lot of heat. If it cannot be handled in time, it will cause safety accidents.

[0003] Some adopt air cooling technology, and the heat is directly discharged to the outside of the charging pile through the fan inside the charging pile. However, during use, dust and water vapor in the air can easily enter the inside of the charging pile, which can easily damage electronic devices over time. The sealed structure used for sampling makes it difficult for heat to dissipate outside the charging pile, and the localized internal heat cannot be effectively diffused. For this reason, the present invention provides a high-safety electric vehicle charging pile. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high-safety electric vehicle charging pile, which solves the problem that dust and water vapor in the air of the existing charging piles can easily enter the interior of the charging pile during use, which can easily damage electronic devices over time, and the sealed structure used for sampling makes it difficult for heat to dissipate outside the charging pile, and local internal heating cannot be effectively diffused.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A high-safety electric vehicle charging pile comprises a sealed box, a vertically arranged partition plate is fixedly connected to the inner side of the sealed box, and a horizontal plate is fixedly connected to the front side of the partition plate;

[0007] The rear side of the partition plate and the inner wall of the sealed box form a first area, and a cooling structure is arranged in the first area;

[0008] The front side of the partition plate and the bottom of the horizontal plate form a second area, the bottom of the partition plate forms a bottom channel connecting the first area and the second area, and the top of the horizontal plate is fixedly installed with a U-shaped air cooling structure;

[0009] The distribution element of the electric vehicle charging pile is installed on the front side of the partition plate, and the distribution element of the electric vehicle charging pile is arranged on the inner side of the U-shaped air cooling structure, and the air outlet of the U-shaped air cooling structure faces the distribution element of the electric vehicle charging pile.

[0010] Preferably, the cooling structure comprises:

[0011] A first vertical air duct and a second vertical air duct are arranged vertically, wherein the first vertical air duct and the second vertical air duct are distributed on the left and right sides of the first area;

[0012] A transverse air supply component, the two ends of which are respectively connected to the first vertical air duct and the second vertical air duct, and the transverse air supply component is used to transport the gas in the first vertical air duct to the second vertical air duct or to transport the gas in the second vertical air duct to the first vertical air duct;

[0013] A water cooling cycle, wherein the heat exchange plates of the water cooling cycle are attached to the side of the transverse air supply component;

[0014] A pyrolysis tank structure is fixedly connected to the outer side of the first vertical air duct and / or the outer side of the second vertical air duct, a side of the pyrolysis tank structure is provided with an air outlet slit connected to the first area, and a thermal decomposition agent is provided inside the pyrolysis tank structure.

[0015] Preferably, the thermal decomposition agent is one of a perfluorohexanone decomposition agent, a pentafluoroethane decomposition agent, a phosphate ester, and a phosphite decomposition agent.

[0016] Preferably, the lateral air supply assembly comprises:

[0017] An outer shell, wherein the outer shell is fixedly connected to the partition plate;

[0018] The inner channel shell is fixedly connected to the inside of the outer shell, and a temperature monitoring module and a second fan unit are fixedly installed inside the outer shell and at both ends of the inner channel shell.

[0019] Preferably, a filter is provided inside the outer shell and at the air inlet of the second fan unit.

[0020] Preferably, the water cooling cycle includes:

[0021] The heat exchange plate body, the transverse air supply components are provided in multiple groups, the multiple groups of transverse air supply components are distributed in parallel and spaced apart, and the heat exchange plate body is fitted and fixed on the sides of the multiple groups of transverse air supply components;

[0022] The back plate and the top plate of the sealed box body are both made of hollow aluminum alloy profiles, and the inner cavities of the back plate and the top plate of the sealed box body are connected;

[0023] A second transverse shell, the second transverse shell is fixedly connected to the front bottom of the top plate of the sealed box body, and the second transverse shell is communicated with the inner cavity of the top plate of the sealed box body, the bottom of the top plate of the sealed box body is fixedly connected with a first branch channel, one end of the first branch channel is communicated with the second transverse shell, the other end of the first branch channel is fixedly connected with a drainage ramp, and the end of the drainage ramp away from the first branch channel is communicated with the top of the heat exchange plate body;

[0024] A first transverse shell, wherein the first transverse shell is fixedly connected to the inner bottom of the back plate of the sealed box body, and the first transverse shell is communicated with the inner cavity of the back plate of the sealed box body;

[0025] The second branch channel has one end connected to the first transverse shell, the other end of the second branch channel communicates with the bottom of the heat exchange plate body, and a circulation pump is installed on the second branch channel.

[0026] Preferably, a splitter plate is fixedly disposed inside the heat exchange plate body, and the splitter plate body divides the inner part of the heat exchange plate body into a first cavity and a second cavity, wherein the first cavity is close to the transverse air supply assembly;

[0027] A diversion fork structure is provided on the side of the diverter plate body, and the diversion fork structure guides part of the fluid in the second cavity to the first cavity;

[0028] The drainage chute is communicated with the second cavity, and the second branch channel is communicated with the first cavity.

[0029] Preferably, the U-shaped air-cooling structure comprises:

[0030] A U-shaped shell, wherein the U-shaped shell is fixedly connected to the transverse plate;

[0031] A first fan unit, wherein the first fan unit is fixedly mounted on the horizontal plate, and an air inlet is provided at a position corresponding to the first fan unit at the bottom of the U-shaped housing;

[0032] A plurality of air outlets are provided on the inner side of the U-shaped shell.

[0033] Preferably, each side surface of the sealed box body is made of hollow aluminum profiles, and the hollow aluminum profiles are filled with water;

[0034] A fuse isolation wall is fixedly installed on the front side of the partition plate, and the fuse in the power distribution element of the electric vehicle charging pile is arranged on the inner side of the fuse isolation wall.

[0035] Preferably, the outer side of the U-shaped shell and the inner side of the sealed box form a gas circulation channel, and the gas circulation channel is connected to the first area.

[0036] The present invention provides a high-safety electric vehicle charging pile, which has the following beneficial effects:

[0037] 1. The present invention divides the interior of a sealed box into a first area and a second area by arranging a partition plate and a horizontal plate inside the sealed box. A cooling structure is arranged in the first area, and a U-shaped air-cooling structure is fixedly installed on the top of the horizontal plate. The cooling structure works continuously to cool the gas inside the first area to ensure that the gas temperature inside the first area meets the heat dissipation requirement. When the U-shaped air-cooling structure works, it extracts gas from the second area and blows it to the distribution element, thereby achieving heat dissipation of the distribution element. After the gas is extracted from the second area, a negative pressure is formed inside, and the gas inside the first area continuously enters the first area from the bottom channel. In this solution, a gas cooling cycle is performed inside the sealed box, which can prevent dust and water vapor in the external air from entering the charging pile during use, and meet the requirements of efficient heat dissipation.

[0038] 2. The present invention, through a specific design of a cooling structure, includes a first vertical air duct, a second vertical air duct, a transverse air supply component and a water cooling cycle. The first vertical air duct and the second vertical air duct are distributed on the left and right sides of the first area. The two ends of the transverse air supply component are respectively connected to the first vertical air duct and the second vertical air duct. The water cooling cycle is used to cool the transverse air supply component. The design of this structure enables the cooling structure to independently perform multiple cycle cooling to ensure better cooling treatment of the gas inside the first area. A pyrolysis tank structure is also designed, in which a thermal decomposition agent is arranged. The thermal decomposition agent is a substance that automatically decomposes to produce fire extinguishing gas after being heated. When encountering high temperature / fire, it can make the fire extinguishing gas fill the inside of the sealed box, thereby suppressing the occurrence of fire, making the electric vehicle charging pile highly safe. Moreover, the thermal decomposition agent does not require circuit control and can still function after the power is cut off due to fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a front view of a high-safety electric vehicle charging pile proposed by the present invention;

[0040] Figure 2 A cross-sectional view of a high-safety electric vehicle charging pile proposed by the present invention;

[0041] Figure 3 This is a schematic diagram of the internal structure of the front side of a high-safety electric vehicle charging pile proposed by the present invention;

[0042] Figure 4 This is a schematic diagram of the internal structure of the back side of a high-safety electric vehicle charging pile proposed by the present invention;

[0043] Figure 5 This is a three-dimensional schematic diagram of a transverse air supply component of a high-safety electric vehicle charging pile proposed by the present invention;

[0044] Figure 6This is a schematic diagram of a liquid cooling cycle of a high-safety electric vehicle charging pile proposed by the present invention;

[0045] Figure 7 This is a three-dimensional schematic diagram of a diverter plate of a high-safety electric vehicle charging pile proposed by the present invention;

[0046] Figure 8 This is a schematic diagram of the pyrolysis tank structure of a high-safety electric vehicle charging pile proposed by the present invention.

[0047] Among them, 1. sealed box body; 101. back plate; 102. top plate; 2. partition plate; 3. horizontal plate; 4. first area; 5. second area; 6. U-shaped shell; 7. first fan unit; 8. air outlet; 9. power distribution element; 10. horizontal air supply assembly; 1001. outer shell; 1002. inner channel shell; 1003. temperature monitoring module; 1004. second fan unit; 1005. filter; 11. first vertical air duct; 12. second vertical air duct; 13. pyrolysis tank structure; 14. air outlet slit; 15. first horizontal shell; 16. second horizontal shell; 17. first branch channel; 18. drainage ramp; 19. heat exchange plate; 20. second branch channel; 21. circulation pump; 22. diverter plate; 23. drainage fork structure; 24. thermal decomposition agent; 25. fuse isolation wall. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Embodiment 1:

[0050] like Figure 1 - Figure 8As shown, an embodiment of the present invention provides a high-safety electric vehicle charging pile, including a sealed box body 1, a power distribution component 9 is installed inside the sealed box body 1, and a wiring harness charging gun is connected to the outside of the sealed box body 1. The power distribution component 9 and the wiring harness charging gun constitute the basic structure of the electric vehicle charging pile. The present invention is mainly used to improve the problem that dust and water vapor in the air can easily enter the interior of the charging pile during use of the existing charging pile, and the electronic devices can be easily damaged over time. However, the sealed structure is adopted, and the heat is not easy to dissipate outside the charging pile, and the local heat inside cannot be effectively diffused. The structure inside the sealed box body 1 is now improved. Specifically, a vertically arranged partition plate 2 is fixedly connected to the inner side of the sealed box body 1, and the partition plate 2 is parallel to the front and rear sides of the sealed box body 1. The front side of the partition plate 2 is fixedly connected to a horizontal plate 3, and the rear side of the partition plate 2 is connected to the sealed The inner wall of the sealing box body 1 forms a first area 4, and a cooling structure is arranged in the first area 4. The cooling structure is used to cool the gas inside the first area 4. The front side of the partition plate 2 and the bottom of the cross plate 3 form a second area 5. The bottom of the partition plate 2 is formed with a bottom channel connecting the first area 4 and the second area 5, so that the gas inside the first area 4 can enter the second area 5. A U-shaped air-cooling structure is fixedly installed on the top of the cross plate 3. The distribution element 9 of the electric vehicle charging pile is installed on the front side of the partition plate 2, and the distribution element 9 of the electric vehicle charging pile is arranged on the inner side of the U-shaped air-cooling structure. The air outlet of the U-shaped air-cooling structure faces the distribution element 9 of the electric vehicle charging pile. The U-shaped air-cooling structure is used to deliver the cold air inside the second area 5 to the location of the distribution element 9, thereby realizing cooling of the distribution element 9.

[0051] Preferably, the sealed box body 1 is a rectangular structure having a bottom support, a top surface and four side surfaces, and the side surface of the sealed box body 1 located on the front side is hingedly connected to the side surface of the sealed box body 1 located on the left side so that the sealed box body 1 can be opened. When the side surface of the sealed box body 1 located on the front side is in a closed state, a sealed chamber is formed inside the sealed box body 1, which can prevent dust and water vapor in the external air from entering the charging pile during use of the charging pile (when the air cooling cycle is turned on), that is, the air of the air-cooling cycle of a high-safety electric vehicle charging pile in this embodiment circulates inside the sealed box body 1, ensuring that the distribution component 9 has a longer service life and a lower failure rate.

[0052] When a high-safety electric vehicle charging pile is in use, the distribution element 9 generates heat during operation, and the internal heat dissipation principle of the sealed box 1 is as follows: the cooling structure works continuously to cool the gas inside the first area 4 to ensure that the gas temperature inside the first area 4 meets the heat dissipation requirements, and the U-shaped air-cooling structure works by extracting gas from the second area 5 and blowing it to the distribution element 9, thereby achieving heat dissipation of the distribution element 9. After the gas is extracted from the second area 5, a negative pressure is formed inside, and the gas inside the first area 4 continuously enters the first area 4 from the bottom channel, that is, the air inside the first area 4 that has been cooled enters the second area 5, and then is sent to the position where the distribution element 9 is located by the U-shaped air-cooling structure to achieve heat dissipation of the distribution element 9.

[0053] In one embodiment, each side surface of the sealed box body 1 is made of hollow aluminum profiles (generally, the bottom surface of the sealed box body 1 is not made of hollow aluminum profiles), and water is injected into the hollow aluminum profiles, thereby ensuring that each side surface of the sealed box body 1 has good thermal conductivity, which has a gain effect on cooling the gas inside the sealed box body 1.

[0054] In one embodiment, a gas circulation channel is formed between the outer side of the U-shaped shell 6 and the inner side of the sealed box body 1, and the gas circulation channel is connected to the first area 4. The gas circulation channel is used to reflux the hot air in the area where the distribution element 9 is located to the first area 4, thereby realizing the reflux of the gas inside the first area 4. Generally, the gas circulation channel is close to the left and right sides of the sealed box body 1. These gases first exchange heat with the left and right sides of the sealed box body 1, and then enter the first area 4, where they are cooled by the cooling structure.

[0055] In one embodiment, the cooling structure includes: a first vertical air duct 11, a second vertical air duct 12, a horizontal air supply component 10 and a water cooling cycle.

[0056] The first vertical air duct 11 and the second vertical air duct 12 are distributed on the left and right sides of the first area 4. The first vertical air duct 11 and the second vertical air duct 12 are fixedly installed with a bracket and the inner wall of the sealed box body 1. The two ends of the horizontal air supply component 10 are respectively connected to the first vertical air duct 11 and the second vertical air duct 12. The horizontal air supply component 10 is used to transport the gas in the first vertical air duct 11 to the second vertical air duct 12 or to transport the gas in the second vertical air duct 12 to the first vertical air duct 11. The heat exchange plate 19 of the water-cooled cycle is attached to the side of the horizontal air supply component 10. When the horizontal air supply component 10 is working, the gas passes through the horizontal air supply component 10 and contacts the side wall of the horizontal air supply component 10. The water-cooled cycle The side walls of the lateral air supply components 10 are in contact with the wall, keeping the side walls of the lateral air supply components 10 in a low temperature state, thereby achieving cooling treatment of the gas. Generally, multiple groups of lateral air supply components 10 are arranged, and the air supply directions of the multiple groups of lateral air supply components 10 are the same or opposite, so as to keep the gas inside the first vertical air duct 11 and the second vertical air duct 12 in a balanced state. In order to ensure that the gas entering the second area 5 from the bottom channel is cold air, an air outlet is generally opened at the bottom end of the first vertical air duct 11 and the second vertical air duct 12, and the bottom ends of the first vertical air duct 11 and the second vertical air duct 12 are lower than the bottom end of the partition plate 2. The gas after heat dissipation treatment flows downward from the bottom ends of the first vertical air duct 11 and the second vertical air duct 12, and then enters the second area 5 through the bottom channel.

[0057] A pyrolysis tank structure 13 is fixedly connected to the outer side of the first vertical air duct 11 and / or the outer side of the second vertical air duct 12. A gas outlet slit 14 connected to the first area 4 is arranged on the side of the pyrolysis tank structure 13. A thermal decomposition agent 24 is arranged inside the pyrolysis tank structure 13. The thermal decomposition agent 24 is a substance that automatically decomposes to produce fire extinguishing gas after being heated, such as the perfluorohexanone decomposition agent, pentafluoroethane decomposition agent, phosphate ester, phosphite decomposition agent, etc. currently available on the market.

[0058] When the distribution element 9 overheats (safety accidents are caused by factors such as damage to the heat dissipation structure inside the sealed box 1 or insufficient heat dissipation) and a fire occurs, the temperature inside the sealed box 1 exceeds the predetermined maximum temperature. At this time, the thermal decomposition agent 24 is heated to produce fire extinguishing gas. A large amount of fire extinguishing gas is produced inside the pyrolysis tank structure 13. The fire extinguishing gas enters the first area 4 through the air outlet slit 14 and then fills the inside of the sealed box 1, thereby suppressing the occurrence of fire and making the electric vehicle charging pile highly safe.

[0059] In one embodiment, the transverse air supply assembly 10 includes: an outer shell 1001 , an inner channel shell 1002 , a temperature monitoring module 1003 and a second fan unit 1004 .

[0060] The outer shell 1001 is fixedly connected to the partition plate 2, the inner channel shell 1002 is fixedly connected to the inside of the outer shell 1001, and the temperature monitoring module 1003 and the second fan unit 1004 are fixedly installed inside the outer shell 1001 and at both ends of the inner channel shell 1002.

[0061] The second fan unit 1004 works to draw the gas at one end of the inner channel shell 1002 into the inner channel shell 1002. After the gas contacts the inner wall of the inner channel shell 1002 for heat exchange, it is discharged from the end of the inner channel shell 1002 having the temperature monitoring module 1003. The temperature monitoring module 1003 detects the temperature of the gas after one heat exchange.

[0062] In one embodiment, a filter 1005 is provided inside the outer shell 1001 and at the air inlet of the second fan unit 1004. The filter 1005 can be designed with multiple layers. The filter 1005 is used to filter the gas entering the inner channel shell 1002 to ensure the cleanliness of the circulating gas.

[0063] In one embodiment, the water cooling cycle includes: a heat exchange plate 19, a back plate 101 and a top plate 102 of the sealed box body 1, a second transverse shell 16, a first branch channel 17, a drainage ramp 18, a first transverse shell 15, a second branch channel 20 and a circulation pump 21.

[0064] There are multiple groups of transverse air supply components 10, and the multiple groups of transverse air supply components 10 are distributed in parallel and at intervals. The heat exchange plate body 19 is fixed on the sides of the multiple groups of transverse air supply components 10. The interior of the heat exchange plate body 19 is a hollow structure. The liquid flowing inside keeps the heat exchange plate body 19 in a low temperature state, and then cools down the tightly fitted transverse air supply components 10. The back plate 101 and the top plate 102 of the sealed box body 1 are both made of hollow aluminum alloy profiles, and the inner cavities of the back plate 101 and the top plate 102 of the sealed box body 1 are connected. Generally, no other structures are set on the back plate 101 and the top plate 102 of the sealed box body 1, so that they can be better manufactured by integrated molding to ensure that the inner cavities of the back plate 101 and the top plate 102 are connected. The second transverse shell 16 is fixedly connected to the top plate of the sealed box body 1 The front end bottom of 102 is connected to the second transverse shell 16 and the inner cavity of the top plate 102 of the sealed box body 1. The bottom of the top plate 102 of the sealed box body 1 is fixedly connected with a first branch channel 17, one end of the first branch channel 17 is connected with the second transverse shell 16, and the other end of the first branch channel 17 is fixedly connected with a drainage ramp 18, and the end of the drainage ramp 18 away from the first branch channel 17 is connected with the top of the heat exchange plate body 19. The first transverse shell 15 is fixedly connected to the inner bottom of the back plate 101 of the sealed box body 1, and the first transverse shell 15 is connected with the inner cavity of the back plate 101 of the sealed box body 1, one end of the second branch channel 20 is connected to the first transverse shell 15, and the other end of the second branch channel 20 is connected with the bottom of the heat exchange plate body 19, and a circulating pump 21 is installed on the second branch channel 20.

[0065] In the water cooling cycle, the circulating pump 21 provides liquid power to pump the liquid into the first transverse shell 15, and then the liquid is dispersed into the inner cavity of the back plate 101 and the top plate 102 of the sealed box body 1. The liquid passes through the inner cavity of the back plate 101 and the top plate 102 of the sealed box body 1 to achieve heat exchange with the external air. In one case, in order to increase the heat exchange effect between the liquid and the external air when passing through the inner cavity of the back plate 101 and the top plate 102 of the sealed box body 1, a cooling structure such as a water spray cooling structure, an air blowing cooling structure, etc. can be designed on the outside of the sealed box body 1, facing the back plate 101 and the top plate 102. The cooled liquid passes through the second transverse shell 16, the first branch channel 17, and the drainage ramp 18 and then flows back to the heat exchange plate body 19. After heat exchange at the heat exchange plate body 19, it flows through the second branch channel 20 to the circulating pump 21 to achieve a water cooling cycle.

[0066] In one embodiment, a diverter plate body 22 is fixedly installed inside the heat exchange plate body 19, and the diverter plate body 22 divides the inside of the heat exchange plate body 19 into a first cavity and a second cavity, wherein the first cavity is close to the lateral air supply assembly 10, and a diversion fork structure 23 is arranged on the side of the diverter plate body 22, and the diversion fork structure 23 is a structure of an inclined plate and a through opening, and the diversion fork structure 23 can guide part of the fluid in the second cavity to the first cavity, and the diversion ramp 18 is connected to the second cavity, and the second branch channel 20 is connected to the first cavity.

[0067] The liquid that enters the heat exchange plate body 19 through the drainage ramp 18 first enters the second cavity, and the liquid flows downward inside the second cavity. The drainage fork structure 23 drains the liquid to the first cavity in multiple times, and flows in the first cavity in a waterfall state, ensuring that each layer of the horizontal air supply assembly 10 can exchange heat well. Finally, all the liquid still flows into the second branch 20 through the first cavity.

[0068] In one embodiment, the U-shaped air-cooling structure includes: a U-shaped shell 6 and a first fan unit 7 .

[0069] The U-shaped shell 6 is fixedly connected to the cross plate 3, the first fan unit 7 is fixedly installed on the cross plate 3, and an air inlet is opened at the position corresponding to the first fan unit 7 at the bottom of the U-shaped shell 6. A plurality of air outlets 8 are opened on the inner side of the U-shaped shell 6. The arrangement of the air outlets 8 depends on the distribution position of the distribution components 9. Generally, the left and right inner side surfaces and the bottom inner side surface of the U-shaped shell 6 are provided with porous air outlets 8. The first fan unit 7 delivers the gas in the second area into the U-shaped shell 6, and the U-shaped shell 6 guides the airflow, and then discharges it from the air outlet 8 to dissipate heat for the distribution components 9.

[0070] A fuse isolation wall 25 is fixedly installed on the front side of the partition plate, and the fuse in the distribution element 9 of the electric vehicle charging pile is arranged inside the fuse isolation wall 25, so that the fuse isolation wall 25 is not affected by the U-shaped air cooling structure, and the fuse isolation wall 25 is placed in a natural room temperature state.

[0071] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A high-safety electric vehicle charging pile, comprising a sealed box (1), characterized in that: A vertically arranged partition plate (2) is fixedly connected to the inner side of the sealed box body (1), and a horizontal plate (3) is fixedly connected to the front side of the partition plate (2); The rear side of the partition plate (2) and the inner wall of the sealed box body (1) form a first area (4), and a cooling structure is provided in the first area (4); A second area (5) is formed on the front side of the partition plate (2) and below the transverse plate (3); a bottom channel connecting the first area (4) and the second area (5) is formed at the bottom of the partition plate (2); and a U-shaped air cooling structure is fixedly installed on the top of the transverse plate (3); The power distribution element (9) of the electric vehicle charging pile is installed on the front side of the partition plate (2), and the power distribution element (9) of the electric vehicle charging pile is arranged on the inner side of the U-shaped air cooling structure, and the air outlet of the U-shaped air cooling structure faces the power distribution element (9) of the electric vehicle charging pile.

2. A high-safety electric vehicle charging pile according to claim 1, characterized in that: The cooling structure comprises: A first vertical air duct (11) and a second vertical air duct (12) are arranged vertically, wherein the first vertical air duct (11) and the second vertical air duct (12) are distributed on the left and right sides of the first area (4); A transverse air supply component (10), wherein two ends of the transverse air supply component (10) are respectively connected to the first vertical air duct (11) and the second vertical air duct (12), and the transverse air supply component (10) is used to transport the gas in the first vertical air duct (11) to the second vertical air duct (12) or to transport the gas in the second vertical air duct (12) to the first vertical air duct (11); A water cooling cycle, wherein the heat exchange plate (19) of the water cooling cycle is attached to the side of the transverse air supply component (10); A pyrolysis tank structure (13) is fixedly connected to the outer side of the first vertical air duct (11) and / or the outer side of the second vertical air duct (12); a side of the pyrolysis tank structure (13) is provided with an air outlet slit (14) connected to the first area (4); and a thermal decomposition agent (24) is provided inside the pyrolysis tank structure (13).

3. A high-safety electric vehicle charging pile according to claim 2, characterized in that: The thermal decomposition agent (24) is one of a perfluorohexanone decomposition agent, a pentafluoroethane decomposition agent, a phosphate ester, and a phosphite decomposition agent.

4. A high-safety electric vehicle charging pile according to claim 2, characterized in that: The transverse air supply component (10) comprises: An outer shell (1001), wherein the outer shell (1001) is fixedly connected to the partition plate (2); The inner channel shell (1002) is fixedly connected to the inside of the outer shell (1001), and a temperature monitoring module (1003) and a second fan unit (1004) are fixedly installed inside the outer shell (1001) and at both ends of the inner channel shell (1002).

5. A high-safety electric vehicle charging pile according to claim 4, characterized in that: A filter screen (1005) is provided inside the outer shell (1001) and at the air inlet of the second fan unit (1004).

6. A high-safety electric vehicle charging pile according to claim 2, characterized in that: The water cooling cycle includes: The heat exchange plate body (19) is provided with a plurality of groups of the transverse air supply components (10), the plurality of groups of the transverse air supply components (10) are distributed in parallel and at intervals, and the heat exchange plate body (19) is fitted and fixed to the side surfaces of the plurality of groups of the transverse air supply components (10); A back plate (101) and a top plate (102) of the sealed box body (1), wherein the back plate (101) and the top plate (102) of the sealed box body (1) are both made of hollow aluminum alloy profiles, and the inner cavities of the back plate (101) and the top plate (102) of the sealed box body (1) are connected; a second transverse shell (16), the second transverse shell (16) being fixedly connected to the front bottom of the top plate (102) of the sealed box body (1), and the second transverse shell (16) being in communication with the inner cavity of the top plate (102) of the sealed box body (1), the bottom of the top plate (102) of the sealed box body (1) being fixedly connected with a first branch channel (17), one end of the first branch channel (17) being in communication with the second transverse shell (16), the other end of the first branch channel (17) being fixedly connected with a drainage ramp (18), and the end of the drainage ramp (18) away from the first branch channel (17) being in communication with the top of the heat exchange plate body (19); A first transverse shell (15), the first transverse shell (15) being fixedly connected to the inner bottom of the back plate (101) of the sealed box body (1), and the first transverse shell (15) being in communication with the inner cavity of the back plate (101) of the sealed box body (1); A second branch channel (20), one end of the second branch channel (20) is connected to the first transverse shell (15), the other end of the second branch channel (20) is connected to the bottom of the heat exchange plate body (19), and a circulating pump (21) is installed on the second branch channel (20).

7. A high-safety electric vehicle charging pile according to claim 6, characterized in that: A splitter plate (22) is fixedly disposed inside the heat exchange plate (19), and the splitter plate (22) divides the inside of the heat exchange plate (19) into a first cavity and a second cavity, wherein the first cavity is close to the transverse air supply assembly (10); A flow diversion fork structure (23) is provided on the side of the diverter plate body (22), and the flow diversion fork structure (23) guides part of the fluid in the second cavity to the first cavity; The drainage chute (18) is in communication with the second cavity, and the second branch channel (20) is in communication with the first cavity.

8. A high-safety electric vehicle charging pile according to claim 1, characterized in that: The U-shaped air-cooling structure comprises: A U-shaped shell (6), wherein the U-shaped shell (6) is fixedly connected to the transverse plate (3); A first fan unit (7), wherein the first fan unit (7) is fixedly mounted on the horizontal plate (3), and an air inlet is provided at a position corresponding to the first fan unit (7) at the bottom of the U-shaped housing (6); A plurality of air outlets (8) are provided on the inner side of the U-shaped shell (6).

9. A high-safety electric vehicle charging pile according to claim 1, characterized in that: Each side surface of the sealed box body (1) is made of hollow aluminum profiles, and the hollow aluminum profiles are filled with water.

10. A high-safety electric vehicle charging pile according to claim 8, characterized in that: The outer side of the U-shaped shell (6) and the inner side of the sealed box (1) form a gas circulation channel, and the gas circulation channel is connected to the first area (4); A fuse isolation wall (25) is fixedly mounted on the front side of the partition plate (2), and the fuse in the power distribution element (9) of the electric vehicle charging pile is arranged on the inner side of the fuse isolation wall (25).

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