Charging pile with charging connection mechanism and high safety

Abstract

The invention discloses a charging pile with a charging connection mechanism and high safety, the charging pile comprises a base and a protection box, the upper part of the base is provided with a charging pile main body, and the front surface and the back surface of the charging pile main body are both provided with heat dissipation ports; the protection box is arranged in the charging pile body, a chassis is arranged at the bottom of the protection box, and the chassis is connected with the base. The top of the protection box is sealed by the ceramic plate, so that the upper temperature can be better conducted into the sealing cavity; a liftable protection box is further arranged, when the temperature sensor detects that the sealing cavity is overheated, the jacking mechanism is controlled to jack the protection box, so that the heat dissipation holes directly face the air outlet, a fan arranged in the air outlet blows air to the heat dissipation holes for heat dissipation, meanwhile, when the protection box is jacked up, a fan switch inserted into a clamping groove is jacked up and turned on, and the protection box is opened. And therefore, the fan starts to operate and work.

Description

Technical Field

[0001] The present invention relates to the field of charging piles, and in particular to a charging pile with a charging connection mechanism and high safety. Background Art

[0002] The function of a charging pile is similar to that of a gas pump in a gas station. It can be fixed on the ground or on the wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations. It can charge various models of electric vehicles according to different voltage levels.

[0003] However, prolonged operation can lead to internal overheating of the charging pile. With the increasing popularity of electric vehicles, charging pile safety issues are becoming increasingly prominent. Traditional charging piles often use fuses or electronic protection circuits for overcurrent protection, but these have the following drawbacks: fuses have a slow response speed and cannot cope with sudden short circuits; dust often accumulates during internal heat dissipation, affecting the heat dissipation and easily causing overheating. Long-term overheating can shorten the life of the equipment and lead to module failure or cable melting. If the charging pile overheats during charging, the overheating can cause internal wiring short circuits, burning insulation materials, and even igniting surrounding combustible materials. Summary of the Invention

[0004] An object of the present invention is to provide a charging pile with a charging connection mechanism and higher safety, which solves at least any aspect of the above-mentioned technical problems.

[0005] A further object of the present invention is to avoid the problem of being unable to cope with sudden short circuits when overheating, and to avoid dust accumulation inside.

[0006] Another further object of the present invention is to improve the heat dissipation effect.

[0007] In particular, the present invention provides a charging pile with a charging connection mechanism and higher safety, including a base and a protective box, wherein a charging pile body is installed on the upper part of the base, and heat dissipation ports are provided on the front and back of the charging pile body; the protective box is arranged in the charging pile body, and a chassis is provided at the bottom of the protective box, and the chassis is connected to the base; a charging connection mechanism, wherein the charging connection mechanism is arranged on both sides of the charging pile body.

[0008] Furthermore, an inner protective box body opening upward is provided in the protective box, the bottom of the inner protective box body is fixedly connected to the chassis, the protective box opening faces downward, and a cover is provided on the outer periphery of the inner protective box body.

[0009] Furthermore, a sealing member is provided inside the inner protective box body, a circular sealing cavity is provided in the middle of the sealing member, and two tungsten electrodes are provided in opposite directions in the sealing cavity.

[0010] Furthermore, the sealed cavity is filled with inert gas.

[0011] Furthermore, opposite air outlets are provided on both sides of the inner protective box body, and fans are provided in the air outlets.

[0012] Furthermore, a preset distance is set between the inner wall of the protective box and the outer wall of the inner protective box body, and a first sealing plate and a second sealing plate are provided between the inner wall of the protective box and the inner protective box body, the first sealing plate and the second sealing plate are arranged up and down, and the first sealing plate and the second sealing plate are fixedly connected to the protective box, and heat dissipation holes are provided on both sides of the protective box, and the heat dissipation holes are located between the first sealing plate and the second sealing plate.

[0013] Furthermore, the outer wall of the protective box is provided with a top plate, and a lifting mechanism is provided at the lower part of the top plate. The top plate is fixedly connected to the protective box, one end of the lifting mechanism is fixedly connected to the top plate, and the other end of the lifting mechanism is fixedly connected to the chassis.

[0014] Furthermore, a clamping strip is provided above the first sealing plate, and the clamping strip is fixedly connected to the inner protective box body.

[0015] Furthermore, a card slot is provided on the outer side wall of the protective box, and a fan switch opposite to the card slot is provided on the inner wall of the charging pile body, and a trigger rod of the fan switch is inserted into the card slot.

[0016] Furthermore, the sealing element adopts a ceramic sealing cavity.

[0017] The technical effects and advantages of the present invention are as follows: The present invention provides a protective box at the bottom layer inside the box, an inner protective box is provided inside the protective box, the inner protective box is fixedly connected to the chassis, and the inner protective box has an upward opening, a seal is provided inside the inner protective box, the seal has a sealed cavity filled with inert gas, and a pair of tungsten electrodes are provided in the sealed cavity. During use, when the temperature of the charging pile rises to a preset temperature, the ionization degree of the gas in the cavity increases, the conductivity is enhanced, and the current is immediately cut off; after the ionized gas is turned on, the relay or power semiconductor device connected in series in the charging circuit is triggered, and the third pole is connected to the heat sink. After the power is cut off, the gas quickly recombines, and the conduction is automatically restored after the temperature drops to a safe range, avoiding manual intervention.

[0018] The present invention is also provided with a liftable protective box. When the temperature sensor detects that the sealed cavity is overheated, the lifting mechanism is controlled to lift the protective box so that the heat dissipation hole is opposite to the air outlet. The fan arranged in the air outlet blows air to the heat dissipation hole to dissipate heat. At the same time, when the protective box is lifted up, the fan switch inserted in the card slot is lifted up and turned on, so that the fan starts to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings: Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the installation position structure of the protection box of the present invention.

[0021] Figure 3 This is a schematic diagram of the installation position structure of the inner protective box of the present invention.

[0022] Figure 4 It is a schematic diagram of the internal structure of the inner protective box of the present invention.

[0023] Figure 5 It is a schematic diagram of the bottom structure of the present invention.

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the bottom structure of the AA section structure.

[0025] Figure 7 This is a schematic diagram of the charging gun structure of the present invention.

[0026] Figure 8 For the present invention Figure 7 Schematic diagram of the front view structure.

[0027] Figure 9 For the present invention Figure 8 Schematic diagram of the cross-sectional structure in the FF direction.

[0028] In the figure: 1. Base, 2. Charging cable, 3. Charging pile body, 4. Heat dissipation vent, 5. Charging gun, 501. Gun body, 502. Charging plug, 503. Charging socket, 504. Fixing hole, 505. Air outlet, 506. Connecting terminal, 507. Air pipe, 508. Rotating fan blade, 6. Protective box, 601. Card slot, 602. Heat dissipation vent, 603. Top plate, 604. First sealing plate, 605. Second sealing plate, 7. Fan switch, 8. Lifting mechanism, 9. Chassis, 10. Inner protective box, 101. Air outlet, 102. Card strip, 11. Fan, 12. Seal, 121. Sealing cavity, 122. Inner cavity, 13. Tungsten electrode, 14. Temperature sensor. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] Figure 1 It is a structural schematic diagram of the present invention. Figure 2 This is a schematic diagram of the installation position structure of the protection box 6 of the present invention. Figure 3 Schematic diagram of the installation position structure of the inner protective box 10 of the present invention. Figure 4 Schematic diagram of the internal structure of the inner protective box 10 of the present invention. Figure 5 It is a schematic diagram of the bottom structure of the present invention. Figure 6 For the present invention Figure 5 Schematic diagram of the bottom structure of the AA section structure. Figure 7 This is a schematic diagram of the charging gun structure of the present invention. Figure 8 For the present invention Figure 7 Schematic diagram of the front view structure. Figure 9 For the present invention Figure 8 Schematic diagram of the cross-sectional structure in the FF direction.

[0031] The solution of this embodiment provides a charging pile with a charging connection mechanism and high safety, including a base 1 and a protective box 6. A charging pile body 3 is installed on the upper part of the base 1, and a charging gun 5 and a charging line 2 are provided on both sides of the charging pile body 3. The charging line 2 is fixedly connected to the charging gun 5. The front and back of the charging pile body 3 are provided with heat dissipation 4; the protective box 6 is arranged in the charging pile body 3, and a chassis 9 is provided at the bottom of the protective box 6, and the chassis 9 is connected to the base 1; The protective box 6 is provided with an inner protective box body 10 which is open upward, wherein the side of the protective box 6 facing the upper opening of the inner protective box body 10, that is, the top surface of the protective box 6 is made of ceramic material, which is convenient for heat conduction of the upper part, so that heat can be better conducted into the inner protective box body 10, and the bottom of the inner protective box body 10 is fixedly sealed and connected to the chassis 9, the protective box 6 is opened downward, and the cover is arranged on the outer periphery of the inner protective box body 10, and the inner protective box body 10 is provided with a sealing member 12. A circular sealed cavity 121 is provided in the middle of the component 12, and the sealed cavity 121 is filled with an inert gas. Two tungsten electrodes 13 are provided in the sealed cavity 121, and the spacing between the tungsten electrodes 13 is 0.1 mm, thereby reducing the breakdown voltage, and the opposite ends of the tungsten electrodes 13 are located in the inner cavity 122 of the sealed cavity 121. The setting of the protective box 6 is to prevent dust from entering the interior of the inner protective box body 10, causing dust to accumulate or adhere to the outer peripheral wall of the sealed cavity 121, which is not convenient for the sealing. The heat dissipation or temperature conduction of cavity 121 affects the ionization of the inert gas due to heat, thereby avoiding long-term overheating inside the charging pile, which will shorten the life of the equipment, cause module failure or cable melting, and avoid overheating causing short circuit in the internal circuit of the charging pile, burning of insulating materials, and even ignition of surrounding combustibles, thereby ensuring the safety of the charging pile. That is to say, when the voltage is normal, the gas is not ionized, the seal is in a high-resistance state, and the circuit is disconnected; when the voltage exceeds the breakdown voltage, the gas is ionized, the discharge tube turns to a low-resistance state, the voltage between the two poles drops sharply, and the overvoltage is limited.

[0032] It needs to be further explained that, Figures 7 to 9 The charging connection mechanism includes a charging gun, which includes a gun body 501, a charging plug 502, a charging socket 503, a fixing hole 504 and an interface terminal 506. Blowing ports 505 are provided on both sides of the gun body. Rotating fan blades 508 that can rotate at high speed are provided in the blowing ports 505. The blowing ports 505 are connected to the charging socket 503 through a blowing pipe 507. During use, if water enters the charging socket 503, the high-speed rotation of the rotating fan blades 508 can be used to blow out the moisture in the charging socket 503 to avoid charging risks caused by moisture in the charging socket 503.

[0033] It should be further explained that opposite air outlets 101 are provided on both sides of the inner protective box body 10, a fan 11 is provided in the air outlet 101, a preset distance is provided between the inner wall of the protective box 6 and the outer wall of the inner protective box body 10, and a first sealing plate 604 and a second sealing plate 605 are provided between the inner wall of the protective box 6 and the inner protective box body 10, the first sealing plate 604 and the second sealing plate 605 are arranged up and down to form an independent cavity, and the first sealing plate 604 and the second sealing plate 605 are fixedly connected to the protective box 6, heat dissipation holes 602 are provided on both sides of the protective box 6, and the heat dissipation holes 602 are located between the first sealing plate 604 and the second sealing plate 605. Under normal conditions, the first sealing plate 604 and the second sealing plate 605 are as shown in FIG. Figure 3 As shown in the figure, the first sealing plate 604 and the second sealing plate 605 are located at the lower part of the fan 11, and the inner protective box body 10 is not connected to the outside of the protective box 6, preventing external dust from entering the interior of the inner protective box body 10, thereby avoiding the deposition of external dust in the inner protective box body 10, and at the same time avoiding dust from adhering to the outer surface of the sealed cavity 121, thereby avoiding the situation where the sealed cavity 121 heats up slowly or has a slow heat dissipation effect, wherein the function of the first sealing plate 604 and the second sealing plate 605 is to perform compression sealing to seal the inner protective box and prevent dust from entering the inner protective box, and the first sealing plate and the second sealing plate are made of rubber.

[0034] It should be further explained that the outer wall of the protective box 6 is provided with a top plate 603, and the lower part of the top plate 603 is provided with a lifting mechanism 8, which is a hydraulic rod or a cylinder. The top plate 603 is fixedly connected to the protective box 6, and one end of the lifting mechanism 8 is fixedly connected to the top plate 603, and the other end of the lifting mechanism 8 is fixedly connected to the chassis 9. When the temperature sensor 14 provided on the sealed cavity 121 detects that the sealed cavity 121 is overheated, the overheating mentioned here can be set to a preset temperature, and the lifting mechanism 8 lifts the protective box 6 through the top plate 603, so that the heat dissipation hole 602 is gradually opposite to the air outlet 101, and the fan is turned on. The switch 7 is pushed by the protective box 6 to turn on the fan switch and turn on the fan 11 for heat dissipation. The fan is electrically connected to the fan switch to discharge the hot air inside the inner protective box 10. At the same time, the protective box 6 can better discharge the heat of the charging pile when it moves upward. The temperature sensor 14 adopts a thermistor or infrared temperature sensor structure. The temperature sensor 14 transmits the collected temperature data signal to the PLC control board, and the hydraulic rod or cylinder of the lifting mechanism 8 is controlled by the PLC control board to lift the protective box 6. Here, the communication control transmission between the PLC control board, the temperature sensor 14 and the lifting mechanism 8 is prior art in many fields.

[0035] It needs to be further explained that, Figure 3 As shown, a clamping strip 102 is provided above the first sealing plate 604, and the clamping strip 102 is fixedly connected to the inner protective box body 10. The setting of the clamping strip 102 is used to limit the first sealing plate 604 to prevent the first sealing plate 604 from being pushed out of the side of the inner protective box body 10, thereby avoiding direct communication between the inner protective box body 10 and the protective box 6.

[0036] It needs to be further explained that, Figure 2 As shown, a slot 601 is provided on the outer wall of the protective box 6, and a fan switch 7 opposite to the slot 601 is provided on the inner wall of the charging pile body 3. The trigger rod of the fan switch 7 is inserted into the slot 601. When the internal temperature of the inner protective box body 10 is too high, the inner protective box body 10 is connected to the outside through the air outlet 101 and the heat dissipation hole 602, and the heat dissipation process is accelerated by the fan 11. It should be noted that the fan switch adopts a toggle switch or a toggle switch, such as the model WT-15, IP67 waterproof toggle switch.

[0037] It should be further explained that the seal 12 adopts a ceramic sealing cavity 121, which is resistant to high temperatures and has a good sealing effect. The top of the protective box is sealed with a ceramic plate to facilitate better conduction of the upper temperature into the sealing cavity.

[0038] Working principle of the present invention: During use, a protective box 6 is provided at the bottom layer inside the box, an inner protective box 10 is provided inside the protective box 6, the inner protective box 10 is fixedly connected to the chassis 9, and the inner protective box 10 has an upward opening, a seal 12 is provided inside the inner protective box 10, the seal 12 has a sealed cavity 121 filled with inert gas, and a pair of tungsten electrodes 13 are provided in the sealed cavity 121. During use, when the temperature of the charging pile rises to a preset temperature, the degree of ionization of the gas in the cavity increases and the conductivity is enhanced; after the ionized gas is turned on, the relay or power semiconductor device connected in series in the charging circuit is triggered to immediately cut off the current, and a triode structure is provided, wherein the triode structure is an existing structure and is not described here. After the power is cut off, the gas quickly recombines, and after the temperature drops to a safe range, the temperature sensor 14 will detect that the temperature has returned to normal, and then the PLC control board control circuit is used to control the triode from the cut-off state to the saturated conduction state, thereby realizing automatic switching control of the circuit. For example, in a digital circuit, the input signal directly drives the base through a current-limiting resistor. When the signal voltage reaches the threshold, the transistor automatically resumes conduction, avoiding manual intervention. The top of the protective box 6 is sealed with a ceramic plate to facilitate better conduction of the upper temperature into the sealed cavity 121. A liftable protective box 6 is also provided. When the temperature sensor 14 detects that the sealed cavity 121 is overheated, the lifting mechanism 8 is controlled to lift the protective box 6, so that the heat dissipation hole 602 is facing the air outlet 101, and the fan 11 arranged in the air outlet 101 blows air to the heat dissipation hole 602 to dissipate heat. At the same time, when the protective box 6 is lifted up, the fan switch 7 inserted in the card slot 601 is lifted up and turned on, so that the fan 11 starts to run. When the temperature of the sealed cavity drops, the lifting mechanism is controlled to reset and return to its original state, thereby avoiding internal temperature overheating.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A charging pile with a charging connection mechanism and high safety, characterized in that: include: A base, the upper portion of which is provided with a charging pile body, and the front and back sides of the charging pile body are provided with heat dissipation vents; A protective box, the protective box is arranged in the charging pile body, and a chassis is provided at the bottom of the protective box, and the chassis is connected to the base; A charging connection mechanism is provided on both sides of the charging pile body.

2. A charging pile with a charging connection mechanism and high safety according to claim 1, characterized in that: An inner protective box body opening upward is arranged in the protective box, the bottom of the inner protective box body is fixedly connected to the chassis, the protective box opening faces downward, and a cover is arranged on the outer periphery of the inner protective box body.

3. A charging pile with a charging connection mechanism and high safety according to claim 2, characterized in that: A sealing member is provided inside the inner protective box body, a circular sealing cavity is provided in the middle of the sealing member, and two tungsten electrodes are provided in opposite directions in the sealing cavity.

4. A charging pile with a charging connection mechanism and high safety according to claim 3, characterized in that: The sealed cavity is filled with inert gas.

5. The charging pile with a charging connection mechanism and high safety according to claim 2, characterized in that: Opposite air outlets are arranged on both sides of the inner protective box body, and fans are arranged in the air outlets.

6. The charging pile with a charging connection mechanism and high safety according to claim 1, characterized in that: A preset distance is set between the inner wall of the protective box and the outer wall of the inner protective box body, and a first sealing plate and a second sealing plate are set between the inner wall of the protective box and the inner protective box body. The first sealing plate and the second sealing plate are arranged up and down, and the first sealing plate and the second sealing plate are fixedly connected to the protective box. Heat dissipation holes are set on both sides of the protective box, and the heat dissipation holes are located between the first sealing plate and the second sealing plate.

7. A charging pile with a charging connection mechanism and high safety according to claim 6, characterized in that: The outer wall of the protection box is provided with a top plate, and the lower part of the top plate is provided with a lifting mechanism. The top plate is fixedly connected to the protection box, one end of the lifting mechanism is fixedly connected to the top plate, and the other end of the lifting mechanism is fixedly connected to the chassis.

8. The charging pile with a charging connection mechanism and high safety according to claim 6, characterized in that: A clamping strip is provided above the first sealing plate, and the clamping strip is fixedly connected to the inner protective box body.

9. The charging pile with a charging connection mechanism and high safety according to claim 7, characterized in that: A card slot is provided on the outer side wall of the protection box, and a fan switch opposite to the card slot is provided on the inner wall of the charging pile body, and the trigger rod of the fan switch is inserted into the card slot.

10. The charging pile with a charging connection mechanism and high safety according to claim 3, characterized in that: The sealing element adopts a ceramic sealing cavity.

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