Non-contact gun head self-cleaning charging pile

Abstract

The utility model provides a non-contact type gun head self-cleaning charging pile, relates to the technical field of new energy charging piles, solves the problems that in the cleaning process of a gun head of an existing charging pile, the surface of an electric contact pin of a plug is damaged and the positioning of the contact pin is influenced due to contact type cleaning of a brush, cleaning cloth and the like, and greatly prolongs the service life of the gun head of the charging pile. The device comprises a cleaning valve and a filtering mechanism arranged below the cleaning valve, the cleaning valve is provided with an air inlet channel and an air outlet channel; in the cleaning state, the filtering mechanism is pushed upwards to open the air inlet channel of the cleaning valve, at the moment, the interior of the cleaning valve and an inner cavity of a pin hole of the gun head of the charging gun form a closed air chamber, airflow is blown out from an air outlet pin on the air outlet channel, dust is blown off, and the airflow with dust in the air chamber is finally filtered by the filtering mechanism. Therefore, through the ingenious pneumatic cleaning mode, the damage to the charging plug contact pin caused by improper use and improper arrangement in the traditional cleaning mode is avoided, and the service life of the charging plug contact pin is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy charging piles, and in particular to a non-contact gun head self-cleaning charging pile. Background Art

[0002] In daily use, the charging piles for new energy vehicles usually use a charging gun that is easily plugged and unplugged and hung on the charging pile chassis to facilitate the connection of new energy vehicles. On the charging pile, the charging gun head is often exposed to the dusty charging pile chassis. In addition, the pin slot of the charging gun head is prone to dust accumulation, frequent plugging and unplugging, and changing different vehicle interfaces make a lot of dust floating in the air and dust accumulated in the vehicle interface contaminate the charging gun head. Dust in the charging port will affect the efficiency of charging, and in serious cases, it will affect the safety of charging and cause safety accidents.

[0003] In the patent with publication number CN117498109A, a self-cleaning vehicle-mounted charging system for a charging gun and a working method thereof are disclosed.

[0004] However, cleaning methods such as brushes and cleaning cloths that use cleaning materials to directly contact the charging gun pins will cause irreversible damage to the electrical pins that have a coating and high positioning requirements during the cleaning process. Using this cleaning method for a long time may cause poor contact of the charging gun head, difficulty in plugging and unplugging, and damage its service life. Utility Model Content

[0005] The utility model provides a non-contact gun head self-cleaning charging pile to alleviate the problem in the prior art that contact cleaning easily damages the electrical pins and affects the service life of the charging gun head.

[0006] In order to alleviate the above technical problems, the technical solution provided by the utility model is:

[0007] The utility model provides a non-contact gun head self-cleaning charging pile, comprising a cleaning valve and a filtering mechanism arranged below the cleaning valve;

[0008] The cleaning valve comprises a housing, a piston and a return spring built into the housing;

[0009] The shell is provided with an air inlet channel and an air outlet channel;

[0010] The filter mechanism is arranged below the cleaning valve and communicates with the air outlet passage;

[0011] The piston has a normal state and a clean state;

[0012] Under normal conditions, the piston blocks the air inlet passage under the pressure of the return spring;

[0013] In the cleaning state, the filter mechanism pushes up to release the piston from blocking the air inlet channel. At this time, a closed air chamber is formed inside the cleaning valve and the inner cavity of the pin hole of the charging gun head. The air flow is blown out from the air outlet needle on the air outlet channel to blow off the dust. The air flow with dust in the air chamber is finally filtered by the filter mechanism.

[0014] The piston includes a piston top plate portion and at least one piston stop column disposed below the piston top plate;

[0015] The piston top plate blocks the air inlet passage in a normal state and releases the blockage of the air inlet passage in a clean state;

[0016] The piston push rod is driven by external force to push the piston top plate.

[0017] The return spring is arranged between the top wall of the inner cavity of the shell and the top plate of the piston, and the return spring is configured to always have a tendency to drive the piston to move downward.

[0018] The shell is also provided with an air outlet needle, which is inserted in the air outlet channel. In the cleaning state, the air outlet needle passes through the through hole on the filter mechanism and is coaxially opposite to the charging gun head pin.

[0019] The piston is also provided with a sealing groove A, which is distributed on the cylindrical surface of the piston top plate. Under normal conditions, the sealing groove A is closed below the outlet of the air inlet channel, and under clean conditions, the sealing groove A moves with the piston top plate to a position above the outlet of the air inlet channel.

[0020] The shell is provided with a sealing groove B, which is distributed on the surface of the cylindrical through hole where the shell and the piston abutment are assembled.

[0021] It also includes a filtering mechanism, which is arranged at the air outlet end below the cleaning valve;

[0022] Under normal conditions, the filter mechanism is pushed by the piston rod above and keeps a certain distance from the shell;

[0023] In the cleaning state, the filter mechanism is forced to rise, and the piston is moved upward by pushing the piston push rod, thereby opening the air inlet channel blocked by the piston top plate and fitting tightly with the end face of the air outlet end of the shell.

[0024] The filtering mechanism includes a filter mounting plate, a filter, and a filter clip, which are arranged in order from top to bottom;

[0025] The filter is embedded in the filter clip installation slot;

[0026] The filter screen clamp is arranged on the filter screen mounting plate and clamps the filter screen with the filter screen mounting plate;

[0027] At least one guide column is arranged between the filter screen mounting plate and the housing.

[0028] A telescopic spring is sleeved on the guide column rod, and the telescopic spring is configured to always have a tendency to drive the filter screen mounting plate to move downward.

[0029] The guide column rod is distributed in a circle around the center of the air outlet needle. The upper end of the guide column rod is connected to the lower air outlet end of the cleaning valve, and the lower end of the guide column rod is connected to the upper end surface of the filter installation plate. The filtering mechanism can slide along the direction of the guide column rod.

[0030] Based on the above technical solutions, the technical effects that can be achieved by the present invention are analyzed as follows:

[0031] The utility model provides a non-contact gun head self-cleaning charging pile, comprising a cleaning valve and a filtering mechanism arranged below the cleaning valve;

[0032] The cleaning valve comprises a housing, a piston and a return spring built into the housing;

[0033] The shell is provided with an air inlet channel and an air outlet channel;

[0034] The filter mechanism is arranged below the cleaning valve and communicates with the air outlet channel;

[0035] The piston has a normal state and a clean state;

[0036] Under normal conditions, the piston blocks the air inlet passage under the pressure of the return spring;

[0037] In the cleaning state, the filter mechanism pushes up to release the piston from blocking the air inlet channel. At this time, a closed air chamber is formed inside the cleaning valve and the inner cavity of the pin hole of the charging gun head. The air flow is blown out from the air outlet needle on the air outlet channel to blow off the dust. The air flow with dust in the air chamber is finally filtered by the filter mechanism.

[0038] During actual use, the charging gun head is unplugged from the vehicle charger socket and then returned to the charging pile. The owner holds the charging gun head and inserts it into the valve port of the cleaning valve. At this time, the charging gun head presses the outermost filter assembly into one side of the cleaning valve body. During this period, the piston is partially against the filter mechanism and slides inside the shell in the same direction as the extrusion movement. Since the piston no longer stays in its original position to block the air inlet channel, the air inlet channel is opened and the gas quickly enters the valve body. When the filter mechanism and the shell are compacted and closed, the entire valve body A short-term closed air chamber is formed inside the charging gun head socket. At this time, a large amount of gas is converted into high-speed airflow and blown out through the narrow air outlet needle hole to clean the pin and the inside of the electric gun head socket. Dust will linger inside the air chamber with the cyclone. During this short period of time, the filter used to capture dust will absorb a large amount of accumulated dust. At this time, the piston is pushed back to the original position by the return spring to block the air inlet channel. There is no airflow in the air chamber, and the piston column also pushes the remaining components to return to the starting position. In daily use, you only need to regularly disassemble and assemble the filter clip to replace the filter inside.

[0039] Therefore, the non-contact gun head self-cleaning charging pile provided by the utility model can use pneumatic cleaning when cleaning the charging gun head of the charging pile with a lot of dust, cleverly avoiding the damage to the charging plug pins caused by the improper use and setting of traditional cleaning methods and cleaning materials and cleaning tools, thereby greatly extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1 Schematic diagram of the overall structure of the charging pile of the utility model;

[0042] Figure 2 A cross-sectional view of the internal structure of a cleaning valve of a charging gun provided in an embodiment of the utility model;

[0043] Figure 3 Schematic diagram of the overall structure of the cleaning valve of the charging gun provided in the embodiment of the utility model;

[0044] Figure 4 A schematic diagram of the structure of the cleaning valve piston of the charging gun of the utility model;

[0045] Figure 5 A schematic structural diagram of a main body of a cleaning valve and an air blowing valve of a charging gun according to the utility model.

[0046] Icons: 100-cleaning valve; 110-housing; 111-air inlet channel; 112-air outlet channel; 113-air outlet needle; 114-sealing groove B; 120-piston; 130-return spring; 121-piston top plate; 122-piston support column; 123-sealing groove A; 200-filter mechanism; 210-filter mounting plate; 220-filter; 230-filter clip; 240-guide column rod; 300-charging gun head. DETAILED DESCRIPTION

[0047] Embodiment 1

[0048] This embodiment provides a non-contact gun tip self-cleaning charging station, please refer to Figure 1-Figure 5 , including a cleaning valve 100 and a filtering mechanism 200 disposed below the cleaning valve 100;

[0049] The cleaning valve 100 includes a housing 110 and a piston 120 and a return spring 130 built in the housing 110 ;

[0050] The housing 110 is provided with an air inlet passage 111 and an air outlet passage 112;

[0051] The filter mechanism 200 is disposed below the cleaning valve 100 and communicates with the air outlet passage 112;

[0052] The piston 120 has a normal state and a clean state;

[0053] In a normal state, the piston 120 blocks the air inlet passage 111 under the pressure of the return spring 130 ;

[0054] In the cleaning state, the filter mechanism 200 pushes up to release the piston 120 from the blockage of the air inlet channel 111. At this time, the interior of the cleaning valve 100 and the inner cavity of the pin hole of the charging gun head 300 form a closed air chamber. The air flow is blown out from the air outlet needle 113 on the air outlet channel 112 to blow off the dust. The air flow with dust in the air chamber is finally filtered by the filter mechanism 200.

[0055] During actual use, when the charging gun head 300 is unplugged from the vehicle charger socket and then returned to the charging pile, the owner holds the charging gun head and inserts it into the valve port of the cleaning valve 100. At this time, the charging gun head 300 presses the outermost filter assembly into one side of the valve body of the cleaning valve 100. During this period, the piston 120, because a part of it is against the filter mechanism 200, also slides inside the shell 110 in the same direction of the squeezing movement. Since the piston 120 no longer stays in its original position to block the air inlet channel 111, the air inlet channel 111 is opened, and the gas quickly enters the valve body; and when the filter mechanism 200 and the shell 110 are pressed and closed, the air inlet channel 111 is opened and the gas quickly enters the valve body. When closed, a short-term closed air chamber is formed inside the entire valve body and the charging gun head socket. At this time, a large amount of gas is converted into high-speed airflow and blown out through the narrow air hole of the air outlet needle 113 to clean the pin and the inside of the electric gun head socket. Dust will linger inside the air chamber with the cyclone. During this short period of time, the filter 220 used to capture dust will absorb a large amount of accumulated dust. At this time, the piston 120 is pushed back to the original position by the return spring 130 to block the air inlet channel 111. There is no airflow in the air chamber, and the piston support column 122 also pushes the remaining components to return to the starting position. In daily use, you only need to regularly disassemble and assemble the filter clip 230 to replace the filter 220 inside.

[0056] Therefore, when cleaning the charging gun head of a charging pile with a lot of dust, the non-contact gun head self-cleaning charging pile provided by the utility model can cleverly avoid the damage to the charging plug pins caused by the improper use and setting of cleaning materials and cleaning tools in the past through pneumatic cleaning, thereby greatly extending its service life.

[0057] In order to facilitate the assembly of the piston 120 and the return spring 130 and the processing of the housing 110, the cleaning valve 100 is installed in two parts, the lower part is the bottom cover and the other part of the housing 110 is connected by bolts, and there is a clearance fit between the piston 120 and the housing 110.

[0058] In the optional scheme of this embodiment, it is more feasible that the piston 120 includes a piston top plate 121 and at least one piston stop column 122 arranged below the piston top plate; at this time, the piston stop column 122 can be driven by external force to push the piston top plate 121 to translate along the inside of the shell 110. The piston 120 is roughly a three-step cone in shape. During operation, the first-step cone is where the piston top plate 121 is located. This cone, as the cone with the largest diameter, blocks the air inlet channel 111 of the shell 110 under normal conditions. Therefore, the thickness of the first cone must be greater than the diameter of the circular through hole of the air inlet channel 111. In order to avoid interference between the second and third sections of the cone and the single air outlet channel 112 in the center of the shell 110, a circular groove is divided in the center of the second-step cone. The third-step cone could originally be used as a single piston stop column 122 to protrude out of the air outlet through hole on the shell 110, but due to interference problems, it had to be offset from the center. Because it has a guiding effect on the entire piston 120 during movement, in order to prevent uneven force on the piston 120 when the filter mechanism 200 is pushed and offset and blockage during movement of the piston top plate 121, the piston stop column 122 is set as two guide columns of the same length on both sides of the central air outlet channel 112.

[0059] In order to drive the piston 120 and the filter mechanism 200 to return to the position just in contact with the charging gun head 300, a return spring 130 is provided between the top wall of the inner cavity of the housing 110 and the piston top plate 121. The return spring 130 is configured to always have a tendency to drive the piston 120 to move downward. In a normal state, the upper end of the return spring 130 is clamped in the circular groove of the end cover at the bottom end of the cleaning valve 100, and the lower end of the return spring 130 is connected to the circular groove on the end face of the piston top plate 121. During the cleaning process, the filter mechanism 200 pushes the piston 120 to continuously compress the return spring 130. When the cleaning valve 100 returns to the normal state from the cleaning state, the return spring 130 drives the piston 120 to return to the original state.

[0060] In the optional scheme of this embodiment, it is more preferred that the shell 110 is also provided with an air outlet needle 113, and the air outlet needle 113 is inserted in the air outlet channel 112. In the cleaning state, the air outlet needle 113 passes through the through hole on the filter mechanism 200 and is coaxial with the pin of the charging gun head 300. When the filter mechanism 200 is pushed by force, the air outlet needle 113 on the shell 110 can freely pass through the three-layer structure of the filter mechanism 200 through the through hole at the corresponding position on the filter mechanism 200; thereby, it will not affect the interference between the filter screen 220 and the other two parts. When the air chamber is closed, the through hole set in the filter mechanism 200 and the air outlet needle 113 are tightly spaced so that dust will not flow out of the gap in large quantities.

[0061] In the process of forming a closed air chamber, there will inevitably be gaps in the contact parts between the workpieces. At this time, in order to prevent air leakage from the device, a seal must be set on the moving contact plane.

[0062] The piston 120 is provided with a sealing groove A123, which is distributed on the cylindrical surface of the piston top plate 121. Under normal conditions, the sealing groove A123 is closed below the outlet of the air inlet channel 111, and under clean conditions, the sealing groove A123 moves with the piston top plate 121 to a position above the outlet of the air inlet channel; the housing 110 is also provided with a sealing groove B114, which is distributed on the surface of the cylindrical through hole where the housing 110 and the piston butt 122 are assembled.

[0063] In order to facilitate disassembly and assembly and mechanism operation, the solution provided in this embodiment is that the filter mechanism 200 is arranged as a three-layer integral component structure of a filter mounting plate 210, a filter 220, and a filter clip 230; the filter 220 is embedded in the mounting groove of the filter clip 230; the filter clip 230 is arranged on the filter mounting plate 210, and clamps the filter 220 with the filter mounting plate 210; in the three-layer structure, there is a circular through hole for the free passage of the air outlet needle 113; at least one guide column rod 240 is arranged between the filter mounting plate 210 and the shell 110, and a telescopic spring is sleeved on the guide column rod 240, and the telescopic spring is configured to always have a tendency to drive the filter mounting plate 210 to move downward.

[0064] A plurality of guide posts 240 are distributed in a circle around the center of the air outlet needle 113 . The upper end of the guide posts 240 is connected to the lower air outlet of the cleaning valve 100 , and the lower end of the guide posts 240 is connected to the upper end surface of the filter mounting plate 210 . The filter mechanism 200 can slide along the direction of the guide posts 240 .

[0065] In this example, the valve body structure of the cleaning valve 100 can form a closed air chamber. To ensure that this process is unimpeded, the guide column 240 is distributed in a circle around the center of the air outlet needle 113 to guide smoothly; the housing 110 is pushed by the filter mechanism 200 and finally closes with one side of the filter screen mounting plate 210;

[0066] Through the entire pressing process of the charging gun head 300, the external filter mounting plate 210 of the filter mechanism 200 is in direct contact with the charging gun head 300, and can be pushed along the guide column 240 by the charging gun head 300 until it contacts the cleaning valve housing 110 and closes, thereby linking the air chamber to intake air and cleaning the electrical pins of the charging gun head.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of each embodiment of the utility model.

Claims

1. A non-contact gun tip self-cleaning charging pile, characterized by: It comprises a cleaning valve (100) and a filtering mechanism (200) arranged below the cleaning valve (100); The cleaning valve (100) comprises a housing (110) and a piston (120) and a return spring (130) built into the housing (110); The housing (110) is provided with an air inlet channel (111) and an air outlet channel (112); The filtering mechanism (200) is arranged below the cleaning valve (100) and is communicated with the air outlet passage (112); The piston (120) has a normal state and a clean state; In the normal state, the piston (120) blocks the air inlet passage (111) under the pressure of the return spring (130); In the cleaning state, the filter mechanism (200) is pushed upward to cause the piston (120) to release the blockage of the air inlet channel (111). At this time, the interior of the cleaning valve (100) and the inner cavity of the pin hole of the charging gun head (300) form a closed air chamber, and the air flow is blown out from the air outlet needle (113) on the air outlet channel (112) to blow off the dust. The air flow with dust in the air chamber is finally filtered by the filter mechanism (200).

2. The non-contact gun tip self-cleaning charging pile according to claim 1, characterized in that: The piston (120) comprises a piston top plate (121) and at least one piston stop (122) disposed below the piston top plate; The piston top plate (121) blocks the air inlet passage (111) in the normal state and releases the blockage of the air inlet passage (111) in the cleaning state; The piston support column (122) is driven by an external force to push the piston top plate (121).

3. The non-contact gun tip self-cleaning charging pile according to claim 1, characterized in that: The return spring (130) is disposed between the top wall of the inner cavity of the housing (110) and the piston top plate (121), and the return spring (130) is configured to always have a tendency to drive the piston (120) to move downward.

4. The non-contact gun tip self-cleaning charging pile according to claim 1, characterized in that: The housing (110) is also provided with an air outlet needle (113), and the air outlet needle (113) is inserted in the air outlet channel (112). In the cleaning state, the air outlet needle (113) passes through the through hole on the filter mechanism (200) and is coaxially opposite to the plug pin of the charging gun head (300).

5. The non-contact gun tip self-cleaning charging pile according to claim 2, characterized in that: The piston (120) is also provided with a sealing groove A (123), and the sealing groove A (123) is distributed on the cylindrical surface of the piston top plate (121). In the normal state, the sealing groove A (123) is closed below the outlet of the air inlet channel (111), and in the clean state, the sealing groove A (123) moves with the piston top plate (121) to a position above the outlet of the air inlet channel.

6. The non-contact gun tip self-cleaning charging pile according to claim 1, characterized in that: The housing (110) is provided with a sealing groove B (114), and the sealing groove B (114) is distributed on the surface of the cylindrical through hole where the housing (110) and the piston stop (122) are assembled.

7. The non-contact gun tip self-cleaning charging pile according to claim 1, characterized in that: It also comprises a filtering mechanism (200), wherein the filtering mechanism (200) is arranged at the air outlet end below the cleaning valve (100); In the normal state, the filter mechanism (200) is pushed by the piston stop (122) above and maintains a certain distance from the housing (110); In the cleaning state, the filter mechanism (200) is forced to rise, and the piston (120) is moved upward by pushing the piston support column (122), thereby opening the air inlet channel (111) blocked by the piston top plate (121) and fitting tightly with the air outlet end face of the shell (110).

8. The non-contact gun tip self-cleaning charging pile according to claim 7, characterized in that: The filtering mechanism (200) comprises a filter screen mounting plate (210), a filter screen (220) and a filter screen clip (230) which are arranged in sequence from top to bottom; The filter screen (220) is embedded in the installation groove of the filter screen clip (230); The filter screen clamp (230) is arranged on the filter screen mounting plate (210) and clamps the filter screen (220) with the filter screen mounting plate (210); At least one guide column (240) is disposed between the filter screen mounting plate (210) and the housing (110).

9. The non-contact gun tip self-cleaning charging pile according to claim 8, characterized in that: A telescopic spring is sleeved on the guide column rod (240), and the telescopic spring is configured to always have a tendency to drive the filter screen mounting plate (210) to move downward.

10. The non-contact gun tip self-cleaning charging pile according to claim 9, characterized in that: A plurality of guide pillars (240) are distributed in a circular pattern around the center position of the air outlet needle (113); the upper end of the guide pillar (240) is connected to the lower air outlet end of the cleaning valve (100); the lower end of the guide pillar (240) is connected to the upper end surface of the filter mounting plate (210); and the filtering mechanism (200) can slide along the direction of the guide pillar (240).

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