Electric vehicle charging pile capable of reducing cable abrasion

Abstract

The invention discloses an electric vehicle charging pile capable of reducing cable abrasion, and relates to the technical field of electrical engineering. Through cooperative arrangement of an auxiliary pipe, an air pump and other structures, air flow in an air hole is blown out to further blow away dust, impurities and the like attached to the charging line when the charging line is pulled for use, the situation that dust and other impurities are attached to the charging line when the charging equipment is in an outdoor use environment is avoided, and when the charging line is pulled, dust and other impurities are not attached to the charging line. The air blowing can prevent the accumulation of the impurities such as dust, keep the surface of the charging wire clean, further ensure the smoothness of the charging wire extraction, and the flowing of the air in the auxiliary pipe can balance the pressure around the charging wire, thereby improving the safety of the charging device. When the charging wire is pulled in the auxiliary pipe, the pressure difference formed by local pressure change caused by the movement of the charging wire is adjusted, so that the obstruction caused by the pressure difference is reduced, and the cable can be pulled out more smoothly.

Description

Technical Field

[0001] The invention relates to the technical field of electrical engineering, and in particular to an electric vehicle charging pile capable of reducing cable wear. Background Art

[0002] An electric vehicle charging station is a special device used to replenish the power batteries of electric vehicles (including electric cars, electric buses, electric motorcycles, etc.). It transmits electricity from the power grid to the vehicle's battery system through a specific charging interface and charging cables, allowing the battery to restore its charge, thereby ensuring the normal driving of the vehicle.

[0003] In daily charging scenarios, users often encounter situations where the friction between other parts of the charging pile cable is large and it is difficult to pull out the cable, which causes the cable to wear out due to various reasons during frequent use. For example, frequent stretching and bending of the cable during charging, as well as friction with the charging pile casing or other objects, may cause the cable sheath to gradually break. Wear and tear may damage the insulation layer, which may easily cause a short circuit, damaging the internal electrical components of the charging pile and even causing a fire. For example, a short circuit during charging may burn important components such as the charging module. In terms of performance, cable wear affects the conductivity, and the reduction in the cross-sectional area of ​​the wire leads to an increase in resistance. According to the resistance law and the power loss formula, the power loss increases during charging, and the charging process is more likely to fail. The electrical efficiency is reduced, and the original 1 hour full charge may be extended to 1.5 hours or more; in addition, for smart charging piles, cable wear will also interfere with signal transmission. For example, due to damage to the shielding layer, external electromagnetic interference will affect the signal, resulting in the charging pile being unable to accurately obtain battery information, affecting the implementation of the charging strategy; in terms of economy, cable wear needs to be repaired or replaced, which increases operating costs, including the cost of purchasing new cables and maintenance labor costs, and frequent repairs and replacements consume manpower, material resources and time; at the same time, problems caused by wear, such as short circuits, will accelerate the aging of other equipment in the charging pile and shorten the service life of the equipment. For example, a charging module that can normally be used for 5 to 10 years may be shortened to 3 to 5 years due to cable wear.

[0004] Moreover, the environment in which the charging piles are located is diverse. Whether it is outdoor dust and wind and sand, or indoor dust particles, they can easily enter the charging piles and attach to the cables. As time goes by, more and more dust will accumulate inside the cables, which will increase the resistance of the cables, resulting in increased energy loss during charging and reduced charging efficiency. For example, for a charging pile near a dusty industrial area, after a period of use, the charging speed will be significantly slowed down due to the influence of dust inside the cable, extending from the original several hours to a longer time, causing great inconvenience to electric vehicle users.

[0005] Therefore, an electric vehicle charging pile that reduces cable wear is proposed to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an electric vehicle charging pile that reduces cable wear, so as to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: an electric vehicle charging pile for reducing cable wear, comprising: a charging device, wherein an output shaft is provided in the charging device, a charging cable is wound around the output shaft, an auxiliary cable output mechanism is provided on one side of the charging device, and a wear detection feedback mechanism is provided on the side of the auxiliary cable output mechanism close to the output shaft;

[0008] The auxiliary cable output mechanism is used to ensure smooth output of the auxiliary charging cable when the charging cable is pulled out of the charging device and clean it when it is stored after use;

[0009] The wear detection feedback mechanism is used to detect the wear degree of the outer surface of the charging cable and provide feedback when the charging cable is rolled onto the output shaft after use.

[0010] Preferably, the auxiliary cable output mechanism includes a wire outlet, which is opened on one side of the charging device, an auxiliary tube is rotatably connected to the wire outlet, the charging cable is slidably connected to the auxiliary tube, and the inner surface of the auxiliary tube is equidistantly provided with through air holes, a collar is fixedly connected to the outer ring of the auxiliary tube, air pipes are fixedly connected to both sides of one end of the auxiliary tube away from the wire outlet, an air pump is fixedly connected to one end of the air pipe away from the auxiliary tube, auxiliary boxes are arranged on both sides of the auxiliary tube, the auxiliary box is fixedly connected to the inner wall of the charging device, the air pump is fixedly connected to the auxiliary box, function rods are fixedly connected to both sides of the collar, the function rods are rotatably connected to the auxiliary box, a trigger plate is fixedly connected to one end of the function rod away from the collar, a sleeve rod is rotatably connected to the outer ring of the function rod, the end of the sleeve rod away from the function rod is fixedly connected to the auxiliary box, and a reaction plate is fixedly connected to one end of the sleeve rod close to the function rod.

[0011] Preferably, the wear detection feedback mechanism includes a U-shaped block, the U-shaped block is fixedly connected to both sides of the inner wall of the charging device, a positioning plate is fixedly connected in the U-shaped block, a functional cavity is opened in the positioning plate, an air cylinder is fixedly connected in the positioning plate, a touch rod is slidably connected in the end of the air cylinder close to the center of the positioning plate, a piston plate is fixedly connected to the end of the touch rod away from the center of the positioning plate, the piston plate is slidably connected in the air cylinder, a liquid storage cavity is opened at the lower end of the air cylinder, an auxiliary spring is fixedly connected to the end of the piston plate away from the liquid storage cavity, and the end of the auxiliary spring away from the piston plate is fixedly connected to the top of the air cylinder.

[0012] Preferably, the wear detection feedback mechanism also includes a one-way valve tube, which is fixedly connected to the air cylinder, and one end of the one-way valve tube away from the air cylinder is fixedly connected to a liquid level column, the outer ring of the liquid level column is fixedly connected to a positioning body, and the positioning body is fixedly connected to the outer wall of the auxiliary box, and the top end of the liquid level column is fixedly connected to a water level sensor.

[0013] Preferably, the auxiliary tube is a hollow structure, the air hole and the auxiliary tube cavity are connected, the air tube is connected to the air hole through the cavity of the auxiliary tube, the air pump is electrically connected to an external controller, the trigger plate is a quarter-circle arc plate, the reaction plate is a three-quarter-circle arc plate, and the reaction plate is electrically connected to an external controller.

[0014] Preferably, a through hole is provided in the middle of the positioning disk, the charging cable is inserted into the through hole in the middle of the positioning disk, compressed gas is installed in the gas cylinder, one end of the touch rod close to the center of the positioning disk is in contact with the outer surface of the charging cable, and liquid is installed in the liquid storage chamber.

[0015] Preferably, the one-way valve tube is connected to the liquid storage cavity, the water level sensor is electrically connected to an external display, the one-way valve tube is connected to the inner cavity of the liquid level column, and the liquid level column is made of a transparent material.

[0016] Compared with the prior art, the present invention provides an electric vehicle charging pile that reduces cable wear and has the following beneficial effects:

[0017] 1. Through the setting of the auxiliary cable output mechanism, when the charging cable is used for pulling, the air pump is triggered under the indirect action of the ring and the cooperation of the trigger plate and the reaction plate, and then the air flow is assisted through the air hole to circulate in the auxiliary tube, so that the gas flows in the auxiliary tube, and then a layer of air film is formed on the surface of the charging cable. The existence of the air film can effectively reduce the direct contact between the charging cable and the inner wall of the auxiliary tube, reduce the friction, and avoid the outer skin of the charging cable from scratching, abrasions and other surface wear due to the friction with the inner wall of the auxiliary tube and other pipelines. It prevents the charging cable from contacting with the tiny protrusions or rough parts of the inner wall of the auxiliary tube during long-term use, the outer skin of the charging cable is gradually worn thin, and the contact point between the charging cable and the inner wall of the auxiliary tube is locally worn due to concentrated pressure. The existence of the air film can be evenly distributed on the surface of the charging cable, dispersing the pressure on the charging cable, making the force on the cable surface more uniform, preventing the cable outer skin from being damaged prematurely due to excessive pressure in certain specific parts, and the wear is aggravated due to excessive pressure at the bend or in the local area under greater tension, thereby extending the overall service life of the cable.

[0018] 2. Through the coordinated setting of auxiliary tubes, air pumps and other structures, the airflow in the air holes can further blow away the dust and impurities attached to the charging cable when the charging cable is pulled out for use, so as to avoid the attachment of dust and other impurities to the charging cable when the charging device is used outdoors. When the charging cable is pulled out, the impurities enter the charging device and increase the friction between the charging cable and the auxiliary tube and other pipes. The blowing of gas can prevent the accumulation of dust and other impurities, keep the surface of the charging cable clean, and further ensure the smoothness of the charging cable withdrawal. The flow of gas in the auxiliary tube can balance the pressure around the charging cable, adjust the pressure difference formed by the local pressure change caused by the movement of the charging cable when the charging cable is pulled out in the auxiliary tube, reduce the obstruction caused by the pressure difference, and help the cable to be pulled out more smoothly.

[0019] 3. Through the setting of the wear detection feedback mechanism, the defects on the surface of the charging cable are detected and fed back under the interference of the touch rod and the surface of the charging cable. The direct contact between the touch rod and the surface of the charging cable can intuitively perceive the damage on the surface of the charging cable, and can monitor the cable status in real time during the charging process or the cable withdrawal / insertion process. Compared with discovering the problem only after the wear of the charging cable has seriously affected the charging performance or a safety hazard has occurred, it is safer and more efficient. In addition, the setting of the transparent material of the liquid level column, and the cooperation of the liquid storage chamber and the one-way valve tube, by squeezing the liquid and using the liquid level height to feedback the wear of the charging cable, the maintenance personnel can more intuitively judge the degree of wear of the charging cable according to the liquid level height. When the liquid level line reaches the position of the water level sensor, the feedback cable wear has reached the critical value that needs to be repaired, which helps the maintenance personnel better arrange the maintenance plan, effectively prevents safety accidents such as leakage and short circuit caused by excessive cable damage, and improves the reliability of the charging pile system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is an internal structural diagram of the charging device of the present invention;

[0022] Figure 3 This is a structural diagram of a local auxiliary cable output mechanism of the present invention;

[0023] Figure 4 This is a structural diagram of the auxiliary cable output mechanism from another angle of the present invention;

[0024] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0025] Figure 6 For the present invention Figure 4 The structure diagram at B is enlarged;

[0026] Figure 7 This is a structural diagram of the auxiliary cable output mechanism and the wear detection feedback mechanism of the present invention;

[0027] Figure 8 This is a structural diagram of the local wear detection feedback mechanism of the present invention;

[0028] Fig. 9 For the present invention Figure 8 Enlarged structural diagram at center C.

[0029] In the figure:

[0030] 1. Charging equipment; 11. Output shaft; 12. Charging cable;

[0031] 2. Auxiliary cable output mechanism; 21. Outlet; 22. Auxiliary tube; 23. Air hole; 24. Ring; 25. Air tube; 26. Auxiliary box; 27. Air pump; 28. Function rod; 29. ​​Trigger plate; 210. Sleeve rod; 211. Reaction plate;

[0032] 3. Wear detection feedback mechanism; 31. U-shaped block; 32. Positioning plate; 33. Functional cavity; 34. Air cylinder; 35. Touch rod; 36. Piston plate; 37. Liquid storage cavity; 38. Auxiliary spring; 39. One-way valve tube; 310. Positioning body; 311. Liquid level column; 312. Water level sensor. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0035] Example

[0036] Please refer to Figures 1 to 6 As shown:

[0037] In order to solve the problems mentioned in the technical solution, the embodiment of the present application provides an electric vehicle charging pile for reducing cable wear, including: a charging device 1, an output shaft 11 is arranged in the charging device 1, the output shaft 11 is mainly used to store a charging cable 12, the charging cable 12 is wound around the output shaft 11, an auxiliary cable output mechanism 2 is arranged on one side of the charging device 1, and a wear detection feedback mechanism 3 is arranged on the side of the auxiliary cable output mechanism 2 close to the output shaft 11;

[0038] The auxiliary cable output mechanism 2 is used to facilitate the output of the auxiliary charging cable 12 when the charging cable 12 is pulled out from the charging device 1, and to clean the auxiliary cable output mechanism 2 when the charging cable 12 is used. The auxiliary cable output mechanism 2 includes an outlet 21, and a rubber sealing piece is provided on the charging device 1 on the outer circle of the outlet 21. The outlet 21 is opened on one side of the charging device 1. An auxiliary tube 22 is rotatably connected in the outlet 21, and the charging cable 12 is slidably connected in the auxiliary tube 22. The auxiliary tube 22 is a cavity structure. The air hole 23 is connected to the cavity of the auxiliary tube 22, and the inner surface of the auxiliary tube 22 is provided with through air holes 23 at equal intervals. The air holes 23 are mainly used to transport the gas in the air pump 27 to the air holes 23 through the air pipe 25 for blowing out. The outer ring of the auxiliary tube 22 is fixedly connected with a collar 24, and both sides of the end of the auxiliary tube 22 away from the outlet 21 are fixedly connected with the air pipe 25. The air pipe 25 is connected to the air hole 23 through the cavity of the auxiliary tube 22, and the end of the air pipe 25 away from the auxiliary tube 22 is fixedly connected There is an air pump 27, which is electrically connected to an external controller. Auxiliary boxes 26 are arranged on both sides of the auxiliary tube 22. The air pipe 25 is movably inserted in the auxiliary box 26, which will not affect the deflection of the auxiliary tube 22. The auxiliary box 26 is fixedly connected to the inner wall of the charging device 1, and the air pump 27 is fixedly connected to the auxiliary box 26. Functional rods 28 are fixedly connected on both sides of the collar 24. The functional rods 28 are rotatably connected in the auxiliary box 26, and the end of the functional rod 28 away from the collar 24 is fixedly connected to a touch The triggering piece 29 is a quarter-circle arc piece. The outer circle of the function rod 28 is rotatably connected with a sleeve rod 210. The end of the sleeve rod 210 away from the function rod 28 is fixedly connected in the auxiliary box 26. The end of the sleeve rod 210 close to the function rod 28 is fixedly connected with a reaction piece 211. The reaction piece 211 is a three-quarter-circle arc piece. The reaction piece 211 is electrically connected to an external controller. The reaction piece 211 is mainly used in conjunction with the triggering piece 29 to trigger the air pump 27 to start.

[0039] For further examples, please refer to Figures 7 to 9 As shown:

[0040] The wear detection feedback mechanism 3 is used to detect the wear degree of the outer surface of the charging cable 12 and provide feedback when the charging cable 12 is wound onto the output shaft 11 after use. The wear detection feedback mechanism 3 includes a U-shaped block 31, which is fixedly connected to both sides of the inner wall of the charging device 1. A positioning disk 32 is fixedly connected to the U-shaped block 31, and a functional cavity 33 is provided in the positioning disk 32. A through hole is provided in the middle of the positioning disk 32, and the charging cable 12 is inserted into the through hole in the middle of the positioning disk 32. An air cylinder 34 is fixedly connected to the positioning disk 32, and compressed gas is installed in the air cylinder 34. The air cylinder 34 is close to the positioning disk 33. A touch rod 35 is slidably connected to one end of the center of the circle of the positioning plate 32, and one end of the touch rod 35 close to the center of the circle of the positioning plate 32 is in contact with the outer surface of the charging line 12. A piston piece 36 is fixedly connected to one end of the touch rod 35 away from the center of the circle of the positioning plate 32. The piston piece 36 is slidably connected to the air cylinder 34. A liquid storage chamber 37 is provided at the lower end of the air cylinder 34. The liquid storage chamber 37 is provided with liquid. An auxiliary spring 38 is fixedly connected to one end of the piston piece 36 away from the liquid storage chamber 37. The auxiliary spring 38 is mainly used to assist the touch rod 35 to be in contact with the surface of the charging line 12. One end of the auxiliary spring 38 away from the piston piece 36 is fixedly connected to the top of the air cylinder 34.

[0041] The wear detection feedback mechanism 3 also includes a one-way valve tube 39, which is fixedly connected to the air cylinder 34 and communicated with the liquid storage chamber 37. The one-way valve tube 39 is mainly used for the one-way flow of liquid in the liquid storage chamber 37 to the liquid level column 311. The end of the one-way valve tube 39 away from the air cylinder 34 is fixedly connected with the liquid level column 311. The liquid level column 311 is mainly used for visual feedback after detecting the wear on the surface of the charging cable 12 through the liquid level column 311. The outer ring of the liquid level column 311 is fixedly connected with a positioning body 310, and the positioning body 310 is fixedly connected to the outer wall of the auxiliary box 26. The top of the liquid level column 311 is fixedly connected with a water level sensor 312, and the water level sensor 312 is electrically connected to an external display. The one-way valve tube 39 is communicated with the inner cavity of the liquid level column 311, and the liquid level column 311 is made of transparent material.

[0042] Everything in the above example works like this:

[0043] In the initial state: when in use, one end of the charging cable 12 is wound on the output shaft 11, and the other end is slidably connected to the positioning plate 32 and the auxiliary tube 22, extending from the outlet 21 to the outside of the charging device 1, the air pump 27 is not started, the trigger plate 29 is not close to the reaction plate 211 for triggering, and the auxiliary spring 38 is in a compressed state.

[0044] The following is the working process of the auxiliary cable output mechanism 2 when the charging cable 12 is pulled out from the charging device 1, the auxiliary charging cable 12 is smoothly output and the auxiliary cable output mechanism 2 is clean when it is stored after use:

[0045] When in use, when the user needs to use the charging device 1 for charging, the charging line 12 is pulled out from the charging device 1. According to the parking position of the electric vehicle, when the user pulls the charging line 12, in order to insert the charging plug on the charging line 12 into the electric vehicle, during this process, the charging line 12 changes position relative to the charging device 1, specifically, relative to the auxiliary tube 22 that passes through. At this time, during the movement of the charging line 12, the auxiliary tube 22 deflects. When the charging line 12 deflects up and down, the deflection of the charging line 12 The rotation drives the auxiliary tube 22 to deflect synchronously. If the charging line 12 deflects vertically upward during the pulling process, since the auxiliary tube 22 and the collar 24 are fixedly connected, and the collar 24 is fixedly connected to the functional rod 28 and can rotate with the functional rod 28 as the rotation axis, the upward deflection of the auxiliary tube 22 will drive the fixedly connected collar 24 to rotate or deflect with the functional rod 28 as the rotation axis. Further, when the auxiliary tube 22 is driven to move by the charging line 12, the deflection of the collar 24 fixedly connected to the auxiliary tube 22 will cause The function rods 28 on both sides rotate passively. When the two function rods 28 rotate in the two auxiliary boxes 26 respectively, the function rods 28 also rotate in the sleeve rod 210 at the same time. Then, when the function rods 28 on both sides of the collar 24 rotate forward and reverse in the two sleeve rods 210 respectively, the triggering piece 29 on the function rod 28 rotates synchronously in the sleeve rod 210. When the triggering piece 29 rotates, since the sleeve rod 210 is fixed, the rotation of the triggering piece 29 gradually approaches the reaction piece 211 until it fits, and then the triggering piece 29 triggers the reaction piece 211. The sheet 211 is fed back to the external controller. Under the action of the external controller, the air pump 27 is started to work. The air pump 27 outputs gas into the air pipe 25. The gas is transmitted to the cavity of the auxiliary tube 22 through the air pipe 25, and then ejected under the action of the air hole 23. When the gas flows in the auxiliary tube 22, a layer of air film is formed on the surface of the charging cable 12, thereby reducing the direct contact between the charging cable 12 and the inner wall of the auxiliary tube 22 when the charging cable 12 is pulled out and stored, thereby reducing the friction, so that the movement of the charging cable 12 is smoother when it is pulled out;

[0046] Furthermore, since one end of the auxiliary tube 22 away from the cable outlet 21 is directly attached to the charging cable 12, when the charging cable 12 is in use, the airflow blown out of the air hole 23 can simultaneously blow out the impurities and dust attached to the charging cable 12, thereby preventing the impurities from entering the interior of the charging device 1, reducing the friction between the charging cable 12 and the auxiliary tube 22, preventing the accumulation of impurities such as dust, keeping the surface of the charging cable 12 clean, and further ensuring the smoothness of the cable withdrawal;

[0047] Through the setting of the auxiliary cable output mechanism 2, when the charging cable 12 is used for pulling, the air pump 27 is triggered under the indirect action of the ring 24 and the cooperation of the trigger plate 29 and the reaction plate 211, and then the air flow is assisted to flow in the auxiliary tube 22 through the air hole 23, so that the gas flows in the auxiliary tube 22, and then a layer of air film is formed on the surface of the charging cable 12. The existence of the air film can effectively reduce the direct contact between the charging cable 12 and the inner wall of the auxiliary tube 22, reduce the friction, and avoid the outer skin of the charging cable 12 from scratches, abrasions and other surface wear due to friction with the inner wall of the auxiliary tube 22 and other pipelines, thereby preventing To prevent the charging cable 12 from coming into contact with tiny protrusions or rough parts of the inner wall of the auxiliary tube 22 during long-term use, which may cause the outer skin of the charging cable 12 to be gradually worn thin, and local wear and tear due to concentrated pressure at the contact point between the charging cable 12 and the inner wall of the auxiliary tube 22. The presence of the air film can be evenly distributed on the surface of the charging cable 12 to disperse the pressure on the charging cable 12, making the force on the surface of the cable more uniform, preventing the outer skin of the cable from being damaged prematurely due to excessive pressure in certain specific parts, and preventing the wear from being aggravated due to excessive pressure at bends or local areas subject to greater tension, thereby extending the overall service life of the cable.

[0048] Through the coordinated arrangement of the auxiliary tube 22 and the air pump 27 and other structures, the airflow in the air hole 23 can further blow away the dust and impurities attached to the charging cable 12 when the charging cable 12 is pulled out for use, so as to avoid the situation in which dust and other impurities are attached to the charging cable 12 when the charging device 1 is used outdoors, and when the charging cable 12 is pulled out, the impurities enter the charging device 1 and increase the friction between the charging cable 12 and the auxiliary tube 22 and other pipes. The blowing of gas can prevent the accumulation of dust and other impurities, keep the surface of the charging cable 12 clean, and further ensure the smoothness of the withdrawal of the charging cable 12. The flow of gas in the auxiliary tube 22 can balance the pressure around the charging cable 12, and adjust the pressure difference formed by the local pressure change caused by the movement of the charging cable 12 when the charging cable 12 is pulled out in the auxiliary tube 22, thereby reducing the obstruction caused by the pressure difference and facilitating the smoother withdrawal of the cable.

[0049] Please refer to the above working process Figures 1 to 6 .

[0050] The following is the working process of the wear detection feedback mechanism 3 for detecting the wear degree of the outer surface of the charging cable 12 and providing feedback when the charging cable 12 is wound onto the output shaft 11 after use:

[0051] When the charging cable 12 is pulled out and used, while sliding in the auxiliary tube 22, the outer surface of the charging cable 12 contacts one end of the feeler rod 35, and is slidably connected to the feeler rod 35 while the charging cable 12 moves. If the surface of the charging cable 12 is worn out during use, when the charging cable 12 is pulled out and used and is slidably connected to the feeler rod 35, the wear causes the outer surface of the charging cable 12 to be dented or deformed. After the surface of the charging cable 12 is worn out, the feeler rod 35 contacts the surface of the charging cable 12 under the action of the auxiliary spring 38, and the dent caused by the wear causes the surface of the charging cable 12 to change, and the feeler rod 35 extends toward the charging cable 12 under the restoring force of the auxiliary spring 38, synchronously pulling the piston plate 3 6 slides in the air cylinder 34 toward the charging line 12. At this time, the auxiliary spring 38 is stretched, and the movement of the piston plate 36 squeezes the liquid in the liquid storage chamber 37. The liquid flows into the liquid level column 311 through the one-way valve tube 39. Since the one-way valve tube 39 can only allow the liquid in the liquid storage chamber 37 to flow into the liquid level column 311, and the liquid in the liquid level column 311 cannot flow in the reverse direction, wear occurs on the surface of the charging line 12. Under the feedback of the touch rod 35 to the wear part, the liquid level in the liquid level column 311 is continuously accumulated until the liquid level reaches the height of the water level sensor 312, triggering the water level sensor 312, and prompting the operator through the external controller that the wear intensity of the charging line 12 is large and needs to be handled in time;

[0052] By setting the wear detection feedback mechanism 3, the defects on the surface of the charging cable 12 are detected and fed back under the interference effect of the touch rod 35 and the surface of the charging cable 12. The direct contact between the touch rod 35 and the surface of the charging cable 12 can intuitively sense the damage on the surface of the charging cable 12, and can monitor the cable status in real time during the charging process or the cable extraction / insertion process. Compared with discovering the problem only after the wear of the charging cable 12 has seriously affected the charging performance or a safety hazard has occurred, it is safer and more efficient. In addition, the transparent material of the liquid level column 311 and the cooperation of the liquid storage chamber 37 and the one-way valve tube 39 can squeeze the liquid and use the liquid level height to feed back the wear of the charging cable 12. The maintenance personnel can more intuitively judge the degree of wear of the charging cable 12 according to the liquid level height. When the liquid level line reaches the position of the water level sensor 312, it is fed back that the cable wear has reached the critical value that needs to be repaired, which helps the maintenance personnel to better arrange the maintenance plan, effectively prevent safety accidents such as leakage and short circuit caused by excessive cable damage, and improve the reliability of the charging pile system.

[0053] Please refer to the above working process Figures 7 to 9 .

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric vehicle charging pile for reducing cable wear, comprising: A charging device (1), wherein an output shaft (11) is arranged inside the charging device (1), and a charging cable (12) is wound around the output shaft (11), characterized in that an auxiliary cable output mechanism (2) is arranged on one side inside the charging device (1), and a wear detection feedback mechanism (3) is arranged on a side of the auxiliary cable output mechanism (2) close to the output shaft (11); The auxiliary cable output mechanism (2) is used to ensure smooth output of the auxiliary charging cable (12) when the charging cable (12) is pulled out from the charging device (1) and to clean the auxiliary charging cable (12) when it is stored after use; The wear detection feedback mechanism (3) is used to detect the wear degree of the outer surface of the charging cable (12) and provide feedback when the charging cable (12) is wound onto the output shaft (11) after use.

2. The electric vehicle charging pile for reducing cable wear according to claim 1, characterized in that: The auxiliary cable output mechanism (2) comprises a cable outlet (21), the cable outlet (21) is provided at one side of the charging device (1), an auxiliary tube (22) is rotatably connected inside the cable outlet (21), the charging cable (12) is slidably connected inside the auxiliary tube (22), the inner surface of the auxiliary tube (22) is provided with through air holes (23) at equal intervals, the outer ring of the auxiliary tube (22) is fixedly connected with a sleeve (24), both sides of the end of the auxiliary tube (22) away from the cable outlet (21) are fixedly connected with air pipes (25), the end of the air pipe (25) away from the auxiliary tube (22) is fixedly connected with an air pump (27), and both sides of the auxiliary tube (22) are provided with auxiliary boxes. (26), the auxiliary box (26) is fixedly connected to the inner wall of the charging device (1), the air pump (27) is fixedly connected in the auxiliary box (26), both sides of the collar (24) are fixedly connected with function rods (28), the function rod (28) is rotatably connected in the auxiliary box (26), the end of the function rod (28) away from the collar (24) is fixedly connected with a trigger plate (29), the outer ring of the function rod (28) is rotatably connected with a sleeve rod (210), the end of the sleeve rod (210) away from the function rod (28) is fixedly connected in the auxiliary box (26), and the end of the sleeve rod (210) close to the function rod (28) is fixedly connected with a reaction plate (211).

3. The electric vehicle charging pile for reducing cable wear according to claim 1, characterized in that: The wear detection feedback mechanism (3) comprises a U-shaped block (31), wherein the U-shaped block (31) is fixedly connected to both sides of the inner wall of the charging device (1), a positioning plate (32) is fixedly connected inside the U-shaped block (31), a functional cavity (33) is provided inside the positioning plate (32), an air cylinder (34) is fixedly connected inside the positioning plate (32), a touch rod (35) is slidably connected inside one end of the air cylinder (34) close to the center of the positioning plate (32), a piston plate (36) is fixedly connected to one end of the touch rod (35) away from the center of the positioning plate (32), the piston plate (36) is slidably connected inside the air cylinder (34), a liquid storage cavity (37) is provided at the lower end of the air cylinder (34), an auxiliary spring (38) is fixedly connected to one end of the piston plate (36) away from the liquid storage cavity (37), and one end of the auxiliary spring (38) away from the piston plate (36) is fixedly connected to the top of the air cylinder (34).

4. The electric vehicle charging pile for reducing cable wear according to claim 3, characterized in that: The wear detection feedback mechanism (3) further comprises a one-way valve tube (39), wherein the one-way valve tube (39) is fixedly connected to the air cylinder (34), wherein one end of the one-way valve tube (39) away from the air cylinder (34) is fixedly connected to a liquid level column (311), wherein the outer ring of the liquid level column (311) is fixedly connected to a positioning body (310), wherein the positioning body (310) is fixedly connected to the outer wall of the auxiliary box (26), and the inner top of the liquid level column (311) is fixedly connected to a water level sensor (312).

5. The electric vehicle charging pile for reducing cable wear according to claim 2, characterized in that: The auxiliary tube (22) is a hollow structure, the air hole (23) is connected to the hollow cavity of the auxiliary tube (22), the air pipe (25) is connected to the air hole (23) through the hollow cavity of the auxiliary tube (22), the air pump (27) is electrically connected to an external controller, the trigger plate (29) is a quarter-circle arc plate, the reaction plate (211) is a three-quarter-circle arc plate, and the reaction plate (211) is electrically connected to an external controller.

6. The electric vehicle charging pile for reducing cable wear according to claim 3, characterized in that: A through hole is provided in the middle of the positioning disk (32), the charging cable (12) is inserted into the through hole in the middle of the positioning disk (32), compressed gas is installed in the gas cylinder (34), one end of the touch rod (35) close to the center of the positioning disk (32) is in contact with the outer surface of the charging cable (12), and liquid is installed in the liquid storage chamber (37).

7. The electric vehicle charging pile for reducing cable wear according to claim 4, characterized in that: The one-way valve tube (39) is in communication with the liquid storage chamber (37); the water level sensor (312) is electrically connected to an external display; the one-way valve tube (39) is in communication with the inner cavity of the liquid level column (311); and the liquid level column (311) is made of a transparent material.

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