Charging pile with overload protection function

Abstract

The utility model relates to the technical field of charging piles, in particular to a charging pile with an overload protection function, which comprises a shell, a base, an operation screen and a charging head, the base is arranged at the lower end of the shell, a mounting hole is formed in the surface of the base, the operation screen is arranged on the side surface of the shell, and the charging head is arranged on the side surface of the shell; when the charger is on fire due to overload, the temperature in the device is sharply increased, the pressure in the dry powder tank is increased due to the high temperature, a fire extinguishing agent in the dry powder tank ejects a limiting ball open, a gap is formed between the limiting ball and a limiting fan, and the fire extinguishing agent enters a fixing shell through a connecting shell; and then the fire extinguishing agent is sprayed out through the spray head, so that the fire extinguishing agent extinguishes fire of the charger, and the situation that the fire behavior of the charger continues to become larger, and consequently larger property loss and more serious personal safety problems are caused is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, in particular to a charging pile with an overload protection function. Background Art

[0002] In order to meet the requirements of environmental protection and energy saving, the demand for charging piles is gradually increasing. When the charging piles are used for a long time, they will cause overload and overheating problems, which will lead to malfunctions and safety hazards of the charging piles. Therefore, it is necessary to set up a charging pile with overload protection function. However, the existing devices still have certain use defects when in use, such as:

[0003] The patent number "CN202023201045.5" discloses a charging pile with an automatic overload protection function. When in use, the device is rotatably connected to the hinge through a transparent protective cover, so that when not in use, the control panel can be covered by rotating the transparent protective cover to protect the control panel and prevent the charging pile body from being exposed to the air for a long time, causing dust accumulation and corrosion, thereby extending the service life of the control panel. However, when the charging pile is in use and the electric vehicle is charged for a long time, the voltage of the charging pile may be too high, resulting in an overload problem of the charging pile, which may cause the charging pile to catch fire, and even cause the fire to spread through the charging head to the surface of the electric vehicle, causing the electric vehicle to burn, which may cause property loss or even personal safety to the owner of the electric vehicle. Utility Model Content

[0004] The utility model aims to solve the above-mentioned problem and proposes a charging pile with overload protection function, which improves the problem that the existing charging pile with overload protection function cannot disconnect the connection with the tram in time when overloaded.

[0005] A charging pile with an overload protection function comprises a shell, a base, an operation screen and a charging head: a base is arranged at the lower end of the shell, and a mounting hole is opened on the surface of the base, an operation screen is arranged on the side of the shell, a charging head is arranged on the side of the shell, a heat dissipation structure is arranged at the upper end of the base, a fire extinguishing structure is arranged at the inner upper end of the shell, and the fire extinguishing structure is located above the heat dissipation structure, and a power-off structure is arranged on the inner side of the shell.

[0006] Preferably, a charging pile body is provided at the upper end of the base, and an exhaust hole is provided on the side of the shell.

[0007] Preferably, the heat dissipation structure comprises a ventilation fan and an air outlet plate, the side of the housing is provided with the ventilation fan, the upper end of the ventilation fan is provided with an air outlet plate, and the side of the air outlet plate is provided with air outlet holes.

[0008] Preferably, a charger is arranged inside the shell, and the charger is located above the charging pile body, and a connecting shell is arranged on the side of the charger.

[0009] Preferably, a connecting plug is provided on a side surface of the connecting shell, and the connecting plug is embedded in the interior of the connecting shell, and a sliding block is provided on a side surface of the connecting plug.

[0010] Preferably, the power-off structure includes a piston rod, a connecting block, a limit rod and a support spring, the limit rod is arranged through the interior of the sliding block, a support spring is arranged on the surface of the limit rod, a connecting block is arranged at the lower end of the connecting plug, a piston rod is arranged on the side of the connecting block, and the other end of the piston rod is connected to the surface of the charger.

[0011] Preferably, a dry powder tank is arranged inside the outer shell, a pressure relief shell is arranged on the side of the dry powder tank, and a fixed shell is arranged on the side of the pressure relief shell.

[0012] Preferably, the fire extinguishing structure includes a limiting ball, a limiting fan, a support block, a buffer spring and a nozzle, a limiting fan is arranged inside the pressure relief shell, a limiting ball is arranged on the side of the limiting fan, and the limiting ball is slidably connected to the pressure relief shell, a support block is arranged inside the pressure relief shell, a buffer spring is arranged on the side of the support block, and the other side of the buffer spring is connected to the limiting ball, and a nozzle is arranged at the lower end of the fixed shell.

[0013] The beneficial effects of the utility model are:

[0014] 1. Through the setting of the connecting plug, sliding block, connecting block, piston rod, limiting rod and supporting spring, when the charger is used continuously and close to overload, a large amount of heat will be generated. The heat generated at this time will cause the air pressure inside the piston rod to expand and push out the connecting block, so that the connecting block drives the connecting plug to be pulled out from the inside of the connecting shell, and the sliding block slides on the surface of the limiting rod, so as to disconnect the charging pile from the tram, so as to prevent the voltage of the charger from continuing to rise and causing overload and fire, and also prevent the fire from spreading to the surface of the tram through the charging head after the charging pile catches fire;

[0015] 2. Through the setting of dry powder tank, limit ball, support block, buffer spring, fixed shell and nozzle, when the charger catches fire due to overload, the temperature inside the device will rise sharply. The high temperature will cause the pressure inside the dry powder tank to increase, and the fire extinguishing agent inside the dry powder tank will push the limit ball open, so that a gap will be generated between the limit ball and the limit fan, and the fire extinguishing agent will enter the fixed shell through the connecting shell, and then the fire extinguishing agent will be sprayed out through the nozzle to extinguish the fire of the charger, so as to prevent the fire of the charger from continuing to grow, thereby causing greater property losses and more serious personal safety issues. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall front-view stereoscopic structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall side-view stereoscopic structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the charger and the connection shell installed in the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the ventilation fan and the air outlet plate installed in the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the installation of the limiting ball and the limiting fan of the utility model;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the installation of the limit rod and the support spring of the utility model.

[0022] In the figure: 1. Shell; 2. Base; 3. Charging head; 4. Operation screen; 5. Ventilation fan; 6. Exhaust hole; 7. Exhaust plate; 8. Charging pile body; 9. Charger; 10. Connecting shell; 11. Connecting plug; 12. Sliding block; 13. Limit rod; 14. Support spring; 15. Connecting block; 16. Piston rod; 17. Dry powder tank; 18. Pressure relief shell; 19. Limit fan; 20. Limit ball; 21. Support block; 22. Buffer spring; 23. Fixed shell; 24. Nozzle. DETAILED DESCRIPTION

[0023] 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.

[0024] When implementing: Figure 1-6 As shown, a charging pile with an overload protection function includes a shell 1, a base 2, an operation screen 4 and a charging head 3: the base 2 is arranged at the lower end of the shell 1, and a mounting hole is opened on the surface of the base 2, the operation screen 4 is arranged on the side of the shell 1, the charging head 3 is arranged on the side of the shell 1, the upper end of the base 2 is arranged with a heat dissipation structure, the internal upper end of the shell 1 is arranged with a fire extinguishing structure, and the fire extinguishing structure is located above the heat dissipation structure, and the inner side of the shell 1 is arranged with a power-off structure.

[0025] A charging pile body 8 is disposed at the upper end of the base 2 , and an exhaust hole 6 is disposed on the side of the housing 1 .

[0026] The heat dissipation structure includes a ventilation fan 5 and an air outlet plate 7. The ventilation fan 5 is arranged on the side of the housing 1. The air outlet plate 7 is arranged on the upper end of the ventilation fan 5. The air outlet plate 7 has air outlet holes on the side thereof.

[0027] When the device is in use, the ventilation fan 5 is first turned on to allow the ventilation fan 5 to suck external air into the interior of the air outlet plate 7, and then the internal air is ejected from the air outlet holes on the surface of the air outlet plate 7 to dissipate heat from the interior of the housing 1 to prevent the charging pile body 8 from malfunctioning and catching fire due to excessive internal temperature. The hot air is then discharged through the exhaust hole 6 to keep the airflow inside the device unobstructed, keep the interior of the device dry, and prevent moisture from causing malfunctions in the device.

[0028] A charger 9 is disposed inside the housing 1 , and the charger 9 is located above the charging pile body 8 , and a connecting shell 10 is disposed on the side of the charger 9 .

[0029] A connecting plug 11 is disposed on the side of the connecting shell 10 , and the connecting plug 11 is embedded in the inside of the connecting shell 10 , and a sliding block 12 is disposed on the side of the connecting plug 11 .

[0030] The power-off structure includes a piston rod 16, a connecting block 15, a limiting rod 13 and a supporting spring 14. The limiting rod 13 is arranged inside the sliding block 12, and the supporting spring 14 is arranged on the surface of the limiting rod 13. The lower end of the connecting plug 11 is provided with a connecting block 15, and the side of the connecting block 15 is provided with a piston rod 16, and the other end of the piston rod 16 is connected to the surface of the charger 9;

[0031] When the device is in use, if the charger 9 is used for a long time and is close to overload, a large amount of heat will be generated. At this time, the heat will increase and expand the air pressure inside the piston rod 16, thereby pushing out the connecting block 15, so that the connecting block 15 drives the connecting plug 11 to be pulled out from the inside of the connecting shell 10, so as to disconnect the connection line with the electric vehicle charging, and prevent the problem of overload and fire of the charger 9 caused by continued voltage increase. When the voltage of the charger 9 gradually returns to normal, the heat of the charger 9 is dissipated through the heat dissipation structure, the air pressure inside the piston rod 16 is reduced, and then the support spring 14 rebounds, and the connecting plug 11 is reinserted into the inside of the connecting shell 10, so as to continue charging the electric vehicle.

[0032] A dry powder tank 17 is arranged inside the housing 1 , a pressure relief shell 18 is arranged on the side of the dry powder tank 17 , and a fixed shell 23 is arranged on the side of the pressure relief shell 18 .

[0033] The fire extinguishing structure includes a limiting ball 20, a limiting fan 19, a support block 21, a buffer spring 22 and a nozzle 24. The limiting fan 19 is arranged inside the pressure relief shell 18, and the limiting ball 20 is arranged on the side of the limiting fan 19, and the limiting ball 20 is slidably connected with the pressure relief shell 18. The pressure relief shell 18 is provided with a support block 21, and the side of the support block 21 is provided with a buffer spring 22, and the other side of the buffer spring 22 is connected with the limiting ball 20. The lower end of the fixed shell 23 is provided with a nozzle 24;

[0034] When the device is in use and the charger 9 catches fire due to overload, the temperature generated at this time will increase the air pressure inside the dry powder tank 17, causing the fire extinguishing agent inside the dry powder tank 17 to push open the limiting ball 20, creating a gap between the limiting ball 20 and the limiting fan 19, allowing the fire extinguishing agent to enter the interior of the fixed shell 23, and then be sprayed out by the nozzle 24 to extinguish the charger 9, thereby preventing the fire from continuing to grow and causing more serious property losses and more serious personal injuries.

[0035] When the utility model is used, the charging head 3 is first removed from the surface of the housing 1, and the charging head 3 is connected to the electric vehicle. Then, the operation screen 4 is operated to select the required voltage for charging. At this time, when the charger 9 is used for too long and is close to overload, a large amount of heat is generated to increase the air pressure inside the piston rod 16, so as to push out the connecting block 15, so that the connecting block 15 pulls out the connecting plug 11, disconnects the connection with the electric vehicle in time, stops charging the electric vehicle, and prevents the voltage of the charger 9 from continuing to increase and overload, so as to prevent the charger 9 from overloading and causing fire.

[0036] When the charger 9 is overloaded and catches fire, the temperature generated at this time will increase the air pressure inside the dry powder tank 17, causing the fire extinguishing agent inside the dry powder tank 17 to push open the limiting ball 20, creating a gap between the limiting ball 20 and the limiting fan 19, allowing the fire extinguishing agent to pass through the pressure relief shell 18 into the interior of the fixed shell 23, and then the fire extinguishing agent is sprayed out by the nozzle 24 to extinguish the fire of the charger 9 and prevent the fire from continuing to grow.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A charging pile with overload protection function, characterized in that: The invention comprises a housing (1), a base (2), an operating screen (4) and a charging head (3): the base (2) is arranged at the lower end of the housing (1), and a mounting hole is provided on the surface of the base (2); the operating screen (4) is arranged on the side of the housing (1); the charging head (3) is arranged on the side of the housing (1); the upper end of the base (2) is arranged with a heat dissipation structure; the upper end of the interior of the housing (1) is arranged with a fire extinguishing structure, and the fire extinguishing structure is located above the heat dissipation structure; and the inner side of the housing (1) is arranged with a power-off structure.

2. The charging pile with overload protection function according to claim 1, characterized in that: A charging pile body (8) is provided at the upper end of the base (2), and an exhaust hole (6) is provided on the side of the shell (1).

3. The charging pile with overload protection function according to claim 1, characterized in that: The heat dissipation structure comprises a ventilation fan (5) and an air outlet plate (7); the ventilation fan (5) is arranged on the side of the housing (1); the air outlet plate (7) is arranged at the upper end of the ventilation fan (5); and air outlet holes are opened on the side of the air outlet plate (7).

4. The charging pile with overload protection function according to claim 1, characterized in that: A charger (9) is arranged inside the outer shell (1), and the charger (9) is located above the charging pile body (8), and a connecting shell (10) is arranged on the side of the charger (9).

5. The charging pile with overload protection function according to claim 4, characterized in that: A connecting plug (11) is arranged on the side of the connecting shell (10), and the connecting plug (11) is embedded in the interior of the connecting shell (10), and a sliding block (12) is arranged on the side of the connecting plug (11).

6. The charging pile with overload protection function according to claim 5, characterized in that: The power-off structure comprises a piston rod (16), a connecting block (15), a limiting rod (13) and a supporting spring (14); the limiting rod (13) is arranged inside the sliding block (12); the supporting spring (14) is arranged on the surface of the limiting rod (13); the connecting block (15) is arranged at the lower end of the connecting plug (11); the piston rod (16) is arranged on the side of the connecting block (15); and the other end of the piston rod (16) is connected to the surface of the charger (9).

7. The charging pile with overload protection function according to claim 1, characterized in that: A dry powder tank (17) is arranged inside the housing (1), a pressure relief shell (18) is arranged on the side of the dry powder tank (17), and a fixed shell (23) is arranged on the side of the pressure relief shell (18).

8. The charging pile with overload protection function according to claim 7, characterized in that: The fire extinguishing structure comprises a limiting ball (20), a limiting fan (19), a support block (21), a buffer spring (22) and a nozzle (24); a limiting fan (19) is arranged inside the pressure relief shell (18); a limiting ball (20) is arranged on the side of the limiting fan (19), and the limiting ball (20) is slidably connected to the pressure relief shell (18); a support block (21) is arranged inside the pressure relief shell (18); a buffer spring (22) is arranged on the side of the support block (21), and the other side of the buffer spring (22) is connected to the limiting ball (20); and a nozzle (24) is arranged at the lower end of the fixed shell (23).

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