Direct-current charging pile with electrical fireproof current-limiting protection function

Abstract

The invention provides a direct-current charging pile with an electrical fireproof current-limiting protection function, and relates to the technical field of charging piles, the direct-current charging pile comprises a charging pile shell, two charging pile side plates are fixedly mounted on the two sides of the charging pile shell, and a side plate heat dissipation opening is fixedly mounted on each charging pile side plate; a top flow guide groove is formed in the upper portion of the charging pile shell, a rainwater flow dividing and uniform scattering device is arranged in the charging pile shell, a flow dividing opening is formed in the bottom of the rainwater flow dividing and uniform scattering device, and two sets of sealing baffles are arranged in the charging pile side plate. Effective sealing protection can be achieved when it is detected that the rainfall is too large. Wherein the first filter plate is used for preliminarily filtering rainwater, and impurities such as deadwood are prevented from entering; rainwater is temporarily stored in the funnel water storage box, when the rainfall exceeds the limit, the rainwater flows into the water storage tank through the L-shaped sleeve pipeline, and the water storage tank drives the sealing baffle to move downwards due to gravity to gradually shield the heat dissipation opening of the side plate of the charging pile.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging piles, and more specifically, relates to a DC charging pile with electrical fire prevention and current limiting protection functions. Background Art

[0002] A direct current charging pile, abbreviated as a DC pile, is a charging device that directly provides direct current to the power battery of an electric vehicle. Compared with an AC charging pile, its charging speed is faster and its power is higher, so it is also called a "fast charging pile". Its core function is to convert the AC power of the power grid into direct current, and connect it to the vehicle battery through a charging gun to achieve efficient power transmission.

[0003] The current DC charging piles have been found to have at least the following technical problems: In outdoor rainy environments, DC charging piles often face the problem of rainwater intrusion. To ensure heat dissipation of the equipment, traditional DC charging piles usually have heat dissipation vents on the side panels, but lack an effective dynamic rainproof sealing structure. When the rainfall is heavy, rainwater can easily invade the interior of the equipment through the heat dissipation vents, causing electronic components to become damp and damaged, triggering electrical failures, and even fires or leakage accidents. For example, in outdoor heavy rain weather, rainwater continuously enters the equipment through the heat dissipation vents, causing internal circuit short circuits, seriously affecting the safety and continuity of power transmission, and posing great hidden dangers to equipment operation and user use. In complex dynamic environments such as heavy rainfall, DC charging piles lack targeted safety protection mechanisms. Traditional charging piles cannot automatically adjust their protection status according to the amount of rainfall, and there are no linked power-off protection measures. When faced with continuous heavy rainfall, not only is the risk of rainwater intrusion increased, but if the equipment continues to supply power to the outside, it may cause leakage due to moisture in the circuit, increasing the risk of electric shock to users. At the same time, the impact of external precipitation is directly transmitted to internal components, and the lack of a buffer structure will accelerate component aging and reduce equipment reliability through long-term use. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a DC charging pile with electrical fire prevention and current limiting protection function to solve the above problems.

[0005] A DC charging pile with electrical fire prevention and current limiting protection function includes a charging pile shell, two charging pile side panels are fixedly installed on both sides of the charging pile shell, and each charging pile side panel is fixedly installed with a side panel heat dissipation port, a top guide groove is provided above the charging pile shell, a rainwater diversion and spreading device is provided inside the charging pile shell, a diversion port is provided at the bottom of the rainwater diversion and spreading device, two groups of sealing baffles are provided inside the charging pile side panels, a charging gun is provided on the outer wall of the charging pile shell, and a protective mechanism is provided inside the charging pile side panels. When it is detected that the rainfall is too large within a certain period of time, the protective mechanism can seal the charging pile side panels, so that rainwater cannot enter the device from the side panel heat dissipation port and cause damage, thereby preventing fire and leakage caused by electrical faults. A diversion and heat dissipation mechanism is provided below the top guide groove, and the diversion and heat dissipation mechanism is used to guide and filter rainwater falling on the top of the device into the interior of the device during rainy weather, and can store a part of the rainwater to assist the device in heat dissipation and cooling when the device is working.

[0006] Preferably, the protective mechanism includes a first filter plate, which is fixedly mounted on the top of the charging pile housing, and the first filter plate is fixedly connected to the top guide groove, and a funnel water storage box is provided below the first filter plate, and the funnel water storage box is fixedly mounted between the two charging pile side plates, and the funnel water storage box is a water storage box that is wide at the top and narrow at the bottom, and an opening is provided on the side wall of the funnel water storage box, and an "L"-shaped sleeve pipe is fixedly mounted on the opening of the side wall of the funnel water storage box, and the "L"-shaped sleeve pipe is an "L"-shaped sleeve design, and a water channel for rainwater to pass through is opened in the "L"-shaped sleeve pipe, and a water tank is fixedly mounted below the "L"-shaped sleeve pipe, and a window is opened above the water tank, and the window above the water tank is connected to the water channel opened by the "L"-shaped sleeve pipe, and first sliders are fixedly mounted on both sides of the water tank, The two charging pile side panels are fixedly installed with a first slide rail, the first slider is slidably installed in the first slide rail, and the charging pile side panels are fixedly installed with a limit block fixing plate, a window is opened on the first slide rail, and a sloped limit block is provided in the window opened on the first slide rail, the sloped limit block is a slider with slopes on both sides, and the sloped limit block is connected to the limit block fixing plate by a spring limit, and a connecting fixing plate is fixedly installed on both sides of the water tank, and the two sealing baffles are fixedly installed on the connecting fixing plate, and a fixing rod is fixedly installed on the sealing baffle, and a second slider is fixedly installed on both sides of the fixing rod, and two second slide rails are fixedly installed on the inner side walls of the two charging pile side panels, and each two second slide rails are symmetrically installed, and the second slider is slidably installed in the second slide rail, and a pressure sensor is provided at the bottom of the second slider.

[0007] Preferably, the diversion and heat dissipation mechanism includes a second filter plate, a rainwater pipe is fixedly installed below the funnel water storage box, a water channel is opened in the rainwater pipe, the rainwater pipe is fixedly installed below the second filter plate, the rainwater diversion and distribution device is fixedly installed below the rainwater pipe, a drain outlet is opened below the charging pile shell, and a heat dissipation fin group is provided below the rainwater diversion and distribution device.

[0008] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by providing a protective mechanism, effective sealing protection can be achieved when excessive rainfall is detected, wherein the first filter plate performs preliminary filtration on rainwater to prevent dead branches and other debris from entering; the funnel water storage box temporarily stores rainwater, and when the rainfall exceeds the limit, the rainwater flows into the water storage tank through the "L"-shaped sleeve pipeline, and the sealing baffle of the water storage tank is driven downward by gravity, gradually covering the heat dissipation port of the charging pile side panel. This process can prevent rainwater from invading the interior of the equipment from the heat dissipation port, prevent electronic components from being damaged by moisture, thereby avoiding fire or leakage accidents caused by electrical faults, and significantly improving the operating safety of the charging pile in a rainy environment.

[0009] In the present invention, by providing a diversion and heat dissipation mechanism, effective utilization of rainwater resources is achieved to assist in heat dissipation. The rainwater flowing out from the bottom of the funnel water storage box is filtered twice by the second filter plate, enters the rainwater diversion and spreading device through the rainwater pipe, and is evenly sprinkled on the heat dissipation fin group through its diversion port. After the rainwater absorbs the heat generated by the operation of the equipment, it is discharged through the bottom drain port. This method uses natural rainwater to enhance the heat dissipation effect, solves the problem of the single traditional heat dissipation structure and limited efficiency, especially when operating at high temperature or high load, it can effectively avoid the performance degradation of the equipment due to overheating, and ensure the stability and efficiency of the charging process.

[0010] In the present invention, a linkage structure of a pressure sensor and a sealing baffle is provided to enhance safety protection in extreme weather conditions. When the sealing baffle moves down to completely block the heat dissipation port, the pressure sensor at the bottom of the second slider detects a signal and controls the charging gun to forcibly cut off the power. This design avoids the risk of electric shock caused by continuous power supply to the equipment in high-risk environments such as heavy rainfall. At the same time, the combination of the sealing structure and the power-off mechanism not only protects the internal components of the equipment, but also ensures the user's electricity safety, making the charging pile more reliable in complex outdoor environments.

[0011] In the present invention, a double filtering structure is provided to reduce the impact of impurities on the equipment. The first filter plate blocks larger debris such as dead branches carried by rainwater, and the second filter plate performs secondary filtration on the rainwater to remove fine particles. These two filtrations prevent impurities from entering the rainwater pipe, the rainwater diversion and distribution device, or adhering to the heat dissipation fin group, preventing pipe blockage and reduced heat dissipation efficiency, reducing the maintenance frequency of the equipment, extending its service life, ensuring the long-term stable operation of each mechanism, and reducing the risk of failure due to impurity accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the top guide trough structure of the present invention; Figure 3 This is a schematic diagram of the "L"-shaped sleeve pipeline structure of the present invention; Figure 4 It is a schematic structural diagram of the water storage tank of the present invention; Figure 5 This is a schematic diagram of the side plate structure of the charging pile of the present invention; Figure 6 This is a schematic diagram of the side panel heat dissipation vent structure of the present invention; Figure 7 Schematic diagram of the sealing baffle structure of the present invention; Figure 8 It is a schematic diagram of the second slide rail structure of the present invention; Figure 9 This is a schematic diagram of the structure of the heat dissipation fin group of the present invention; Figure 10 This invention Figure 6 A magnified view of the structure in the middle.

[0013] In the figure, the correspondence between the component names and the drawing numbers is: 1. Charging pile shell; 2. Charging gun; 3. Charging pile side panel; 4. Side panel heat dissipation port; 5. Top guide groove; 6. First filter plate; 7. Funnel water storage box; 8. "L"-shaped sleeve pipeline; 9. Inclined limit block; 10. Second filter plate; 11. Water storage tank; 12. First slider; 13. First slide rail; 14. Limit block fixing plate; 15. Connecting fixing plate; 16. Sealing baffle; 17. Fixing rod; 18. Second slider; 19. Second slide rail; 20. Rainwater pipeline; 21. Rainwater diversion and spreading device; 22. Heat dissipation fin group. DETAILED DESCRIPTION

[0014] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0015] See also Figures 1-10The present invention provides a DC charging pile with an electrical fire prevention and current limiting protection function, including a charging pile shell 1, two charging pile side panels 3 are fixedly installed on both sides of the charging pile shell 1, and each charging pile side panel 3 is fixedly installed with a side panel heat dissipation port 4, which is used to discharge the heat generated during the operation of the device and maintain the normal temperature of the equipment. A top guide groove 5 is provided above the charging pile shell 1, and the top guide groove 5 is used to guide rainwater falling on the top of the device to the inside of the device during precipitation. A rainwater diversion and evenly spreading device 21 is provided inside the charging pile shell 1, and a diversion port is provided at the bottom of the rainwater diversion and evenly spreading device 21. The rainwater diversion and evenly spreading device 21 is used to disperse and evenly spread the rainwater entering therein. Two sets of sealing baffles 16 are provided inside the charging pile side panels 3. The sealing baffles 16 are used to cover the side panel heat dissipation ports 4 opened on the charging pile side panels 3 when the rainfall is too heavy, so as to protect the electronic components inside the device. A charging gun 2 is provided on the outer wall of the charging pile shell 1, and the charging gun 2 is used to connect electrical equipment.

[0016] A protective mechanism is provided inside the side panel 3 of the charging pile. The protective mechanism is used to seal the side panel 3 of the charging pile when it detects that the rainfall is too heavy within a certain period of time, so that rainwater cannot penetrate into the interior of the device from the heat dissipation port 4 of the side panel and cause damage, thereby preventing fire and leakage caused by electrical failure. A diversion and heat dissipation mechanism is provided under the top guide groove 5. The diversion and heat dissipation mechanism is used to guide and filter the rainwater falling on the top of the device into the interior of the device during rainy weather, and can store a part of the rainwater to assist the device in heat dissipation and cooling when the device is working.

[0017] The protective mechanism includes a first filter plate 6, which is fixedly mounted on the top of the charging pile housing 1. The first filter plate 6 and the top guide groove 5 are fixedly connected. The first filter plate 6 is used to conduct preliminary filtration of rainwater guided by the top guide groove 5 to the inside of the device to prevent dead branches that may be carried in the rainwater from entering the interior of the device. A funnel water storage box 7 is provided below the first filter plate 6. The funnel water storage box 7 is fixedly mounted between the two charging pile side plates 3. The funnel water storage box 7 is a water storage box that is wide at the top and narrow at the bottom. The upper opening is connected to the first filter plate 6 to store rainwater inside, and the lower part gradually narrows to provide a small opening at the bottom, which can control the orderly outflow of liquid like a funnel. The side wall of the funnel water storage box 7 is provided with an opening, and an "L"-shaped The sleeve pipeline 8, the "L"-shaped sleeve pipeline 8 is an "L"-shaped sleeve design, and a water channel for rainwater to pass through is opened in the "L"-shaped sleeve pipeline 8. A water storage tank 11 is fixedly installed below the "L"-shaped sleeve pipeline 8, and a window is opened above the water storage tank 11. The window above the water storage tank 11 is connected to the water channel opened by the "L"-shaped sleeve pipeline 8. When the rainfall is too heavy, the liquid level in the funnel water storage box 7 will gradually rise to the opening on the side wall of the funnel water storage box 7, and the overflowing rainwater will enter the water storage tank 11 along the water channel opened in the "L"-shaped sleeve pipeline 8. A first slider 12 is fixedly installed on both sides of the water storage tank 11, and a first slide rail 13 is fixedly installed on the two charging pile side panels 3. The first slider 12 is slidably installed in the first slide rail 13, and the charging pile side panels 3 A limit block fixing plate 14 is fixedly installed on the first slide rail 13, a window is opened on the first slide rail 13, and an inclined limit block 9 is provided in the window opened on the first slide rail 13. The inclined limit block 9 is a slider with inclined surfaces on both sides. The inclined limit block 9 is connected to the limit block fixing plate 14 by a spring limit. When the water storage tank 11 stores rainwater, due to the effect of gravity, the water storage tank 11 will drive the first slider 12 to slide in the first slide rail 13. When there is too much rainwater in the water storage tank 11, gravity will push the inclined limit block 9 inward, and the water storage tank 11 will drive the first slider 12 to slide to the bottom of the first slide rail 13. A connecting fixing plate 15 is fixedly installed on both sides of the water storage tank 11, and two sealing baffles 16 are fixedly installed on the connecting fixing plate 15. A fixed rod 17 is fixedly installed, and a second slider 18 is fixedly installed on both sides of the fixed rod 17. Two second slide rails 19 are fixedly installed on the inner walls of the two charging pile side panels 3. Every two second slide rails 19 are symmetrically installed. The second slider 18 is slidably installed in the second slide rail 19. When the water storage tank 11 moves downward, it can drive the second slider 18 to stop sliding in the second slide rail 19, thereby driving the sealing baffle 16 to move downward, and the side panel heat dissipation port 4 opened on the charging pile side panel 3 is sealed to prevent heavy rain from invading the interior of the device and causing damage to electrical components. A pressure sensor is provided at the bottom of the second slider 18. When the pressure sensor on the second slider 18 detects that the second slider 18 slides to the bottom of the second slide rail 19, the pressure sensor will control the device to forcibly cut off the power to the charging gun 2.To prevent electric shock accidents caused by external discharge of equipment during heavy rainfall.

[0018] The diversion and heat dissipation mechanism includes a second filter plate 10, which is used to perform secondary filtration on the rainwater flowing through the bottom opening of the funnel water storage box 7. A rainwater pipe 20 is fixedly installed under the funnel water storage box 7, and a water channel is opened in the rainwater pipe 20. The rainwater pipe 20 is fixedly installed under the second filter plate 10, and a rainwater diversion and evenly spreading device 21 is fixedly installed under the rainwater pipe 20. A drain outlet is opened under the charging pile housing 1, and a heat dissipation fin group 22 is provided under the rainwater diversion and evenly spreading device 21. The heat dissipation fin group 22 is used to guide the heat in the device and increase the heat dissipation area. After the rainwater falling into the funnel water storage box 7 is filtered for the second time by the second filter plate 10, it enters the rainwater diversion and evenly spreading device 21 through the water channel opened in the rainwater pipe 20. The rainwater diversion and evenly spreading device 21 evenly disperses the filtered rainwater on the heat dissipation fin group 22, takes away the heat conducted to the heat dissipation fin group 22 when the equipment is working, and performs auxiliary heat dissipation. After the liquid completes the heat dissipation, it is discharged through the drain outlet opened at the bottom of the charging pile housing 1.

[0019] Working principle: In the first step, when it rains, the top guide groove 5 guides the rainwater to the first filter plate 6. The first filter plate 6 preliminarily filters the rainwater to block debris such as dead branches. The filtered rainwater flows into the funnel water storage box 7. The funnel water storage box 7 is wide at the top and narrow at the bottom to temporarily store rainwater. The small opening at the bottom controls the orderly outflow of rainwater. When the rainfall is small, the rainwater enters the diversion and heat dissipation mechanism through the bottom opening; at this time, the side panel heat dissipation port 4 on the charging pile side panel 3 works normally, discharges the heat from the equipment, maintains the normal internal temperature, ensures the stable operation of the equipment, and avoids electrical failures caused by high temperature.

[0020] In the second step, when the rainfall is too heavy, the liquid level in the funnel water storage box 7 rises to the side wall opening, and the overflowing rainwater flows into the water storage tank 11 through the water channel of the "L"-shaped sleeve pipe 8. The gravity of the water storage tank 11 increases due to the increase of rainwater, and the first sliders 12 on both sides slide down along the first slide rails 13 on the side plate 3 of the charging pile, pushing the inclined limit block 9 (compression spring) to continue to move downward. At the same time, the water storage tank 11 drives the sealing baffle 16 to move downward through the connecting fixed plate 15. The fixing rod 17 on the sealing baffle 16 slides along the second slide rail 19 with the help of the second slider 18, gradually blocking the side plate heat dissipation port 4 to prevent rainwater from invading the interior of the equipment from the heat dissipation port.

[0021] In the third step, the water tank 11 continues to move downward, and the sealing baffle 16 completely blocks the side panel heat dissipation port 4, thereby sealing the charging pile side panel 3, preventing rainwater from intruding and damaging the internal electronic components, and preventing fire or leakage caused by electrical failure. When the second slider 18 slides to the bottom of the second slide rail 19, the pressure sensor at its bottom detects a signal, and the control device forcibly cuts off the power to the charging gun 2, eliminating electric shock accidents caused by equipment discharge in heavy rainfall weather, and further ensuring electricity safety.

[0022] In the fourth step, the rainwater flowing out from the bottom of the funnel water storage box 7 is filtered twice by the second filter plate 10 (to remove fine impurities), and then enters the rainwater diversion and evenly spreading device 21 through the water channel of the rainwater pipe 20. The rainwater diversion and evenly spreading device 21 evenly sprinkles the rainwater on the heat dissipation fin group 22 below through the bottom diversion port. The rainwater absorbs the working heat of the equipment conducted by the heat dissipation fin group 22 to assist in cooling. After the heat dissipation is completed, the rainwater is discharged through the drain outlet below the charging pile shell 1, realizing the effective utilization of rainwater resources and improving the heat dissipation efficiency of the equipment.

[0023] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A DC charging pile with electrical fire protection and current limiting protection function, comprising a charging pile housing (1), characterized in that: Two charging pile side panels (3) are fixedly mounted on both sides of the charging pile housing (1), and a side panel heat dissipation port (4) is fixedly mounted on each of the charging pile side panels (3). A top guide groove (5) is provided above the charging pile housing (1), and a rainwater diversion and spreading device (21) is provided inside the charging pile housing (1). A diversion port is provided at the bottom of the rainwater diversion and spreading device (21). Two sets of sealing baffles (16) are provided inside the charging pile side panels (3), and a charging gun (2) is provided on the outer wall of the charging pile housing (1). A protective mechanism is provided inside the charging pile side plate (3). The protective mechanism is used to seal the charging pile side plate (3) when detecting excessive rainfall within a certain period of time, so that rainwater cannot penetrate into the interior of the device through the side plate heat dissipation port (4). A diversion and heat dissipation mechanism is provided below the top guide groove (5). The diversion and heat dissipation mechanism is used to guide and filter rainwater falling on the top of the device into the interior of the device during rainy weather, and can store the rainwater.

2. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 1, characterized in that: The protective mechanism comprises a first filter plate (6), the first filter plate (6) being fixedly mounted on the top of the charging pile housing (1), the first filter plate (6) being fixedly connected to the top guide groove (5), a funnel water storage box (7) being provided below the first filter plate (6), the funnel water storage box (7) being fixedly mounted between two charging pile side plates (3), the funnel water storage box (7) being a water storage box that is wide at the top and narrow at the bottom, and an opening being provided on a side wall of the funnel water storage box (7).

3. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 2, characterized in that: An "L"-shaped sleeve pipe (8) is fixedly mounted on the opening of the side wall of the funnel water storage box (7). The "L"-shaped sleeve pipe (8) is designed as an "L"-shaped sleeve. A water channel for rainwater to pass through is provided in the "L"-shaped sleeve pipe (8). A water storage tank (11) is fixedly mounted below the "L"-shaped sleeve pipe (8).

4. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 3, characterized in that: A window is provided above the water storage tank (11), and the window above the water storage tank (11) is connected to a water channel provided by an "L"-shaped sleeve pipe (8). First sliding blocks (12) are fixedly installed on both sides of the water storage tank (11), and first slide rails (13) are fixedly installed on both side panels (3) of the charging pile.

5. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 4, characterized in that: The first slide block (12) is slidably mounted in the first slide rail (13), and a limit block fixing plate (14) is fixedly mounted on each of the charging pile side plates (3). A window is provided on the first slide rail (13), and an inclined limit block (9) is provided in the window provided on the first slide rail (13).

6. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 5, characterized in that: The inclined surface limit block (9) is a slider with inclined surfaces on both sides. The inclined surface limit block (9) is connected to the limit block fixing plate (14) through a spring limiter. Connecting fixing plates (15) are fixedly installed on both sides of the water storage tank (11). The two sealing baffles (16) are fixedly installed on the connecting fixing plates (15). A fixing rod (17) is fixedly installed on the sealing baffle (16).

7. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 6, characterized in that: Second slide blocks (18) are fixedly mounted on both sides of the fixing rod (17), and two second slide rails (19) are fixedly mounted on the inner side walls of the two charging pile side plates (3), with each two second slide rails (19) being symmetrically mounted.

8. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 7, characterized in that: The second slider (18) is slidably mounted in the second slide rail (19), and a pressure sensor is provided at the bottom of the second slider (18).

9. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 8, characterized in that: The diversion and heat dissipation mechanism comprises a second filter plate (10), a rainwater pipe (20) is fixedly installed below the funnel water storage box (7), a water channel is opened in the rainwater pipe (20), and the rainwater pipe (20) is fixedly installed below the second filter plate (10).

10. A DC charging pile with electrical fire protection and current limiting protection function as claimed in claim 9, characterized in that: The rainwater diversion and evenly spreading device (21) is fixedly installed below the rainwater pipe (20), a drainage port is provided below the charging pile housing (1), and a heat dissipation fin group (22) is provided below the rainwater diversion and evenly spreading device (21).

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