New energy charging pile charging gun service life detection device

Abstract

The invention discloses a device for detecting the service life of a charging gun of a new energy charging pile. The device comprises a base, a charging interface and the charging gun, the device further comprises a plugging service life detection assembly, the plugging service life detection assembly comprises a lantern ring, the charging interface is fixedly arranged at the top end of one side of the base in a penetrating mode, the charging gun is arranged on the other side of the top end of the top side, the lantern ring is fixedly arranged on the peripheral side of the charging gun in a sleeving mode, and two first piston rods are oppositely arranged on the peripheral side of the charging interface. When the improved charging gun service life detection device is used, cooling processing of the head end of the charging gun and the charging interface can be synchronously completed in the process of completing connection of the charging gun and the charging interface so as to simulate that the charging gun and the charging interface can be reused after being charged for a long time after completing single time; therefore, the influence of an electric connection structure in the charging gun and the flashlight interface on the detection effect is avoided, and the plugging service life detection result of the charging gun is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of charging gun life detection devices, and particularly relates to a new energy charging pile charging gun life detection device. Background Art

[0002] The new energy charging pile charging gun is a device used to connect an electric vehicle and a charging pile to achieve the charging of new energy vehicles. Specifically, generally through the plugging and unplugging operation between the charging gun and the charging interface, the charging operation of the new energy vehicle is completed. Therefore, the plugging and unplugging life of the charging gun is of great significance for ensuring the safety, reliability, and long-term stable operation of the charging equipment.

[0003] When the existing new energy charging pile charging gun life detection device is in use, generally, the plugging and unplugging life detection of the charging gun is completed through the repeated plugging and unplugging operation between the charging gun and the charging interface. However, the interval time when the charging gun is inserted into the charging interface is short, which makes the power connection structure between the charging gun and the charging interface not have enough heat dissipation time. The repeated plugging and unplugging operation between the charging gun and the charging interface may cause the temperature of the power connection structure between the charging gun and the charging interface to be too high, affecting the detection result of the plugging and unplugging life of the charging gun. Summary of the Invention

[0004] The purpose of the present invention is to provide a new energy charging pile charging gun life detection device to facilitate solving the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A new energy charging pile charging gun life detection device, including a base, a charging interface, and a charging gun; It further includes: A plugging and unplugging life detection component, the plugging and unplugging life detection component includes a collar. The charging interface is fixedly penetrated and installed at the top of one side of the base. The charging gun is arranged on the other side of the top side. And the collar is fixedly sleeved on the outer peripheral side of the charging gun. Two first piston rods are oppositely arranged on the outer peripheral side of the charging interface. And one end of each first piston rod is fixedly connected to the base through a bolt. The other end of the first piston rod is slidably sleeved with a piston cylinder. And the piston cylinder is fixedly connected to the corresponding side wall of the collar. A gas injection and extraction mechanism is arranged at the bottom side of the piston cylinder. A guiding mechanism is arranged at the bottom side of the collar. Two exhaust pipes are oppositely arranged between the two piston cylinders. And the intake end of each exhaust pipe is fixedly penetrated through the barrel wall of the piston cylinder; A pressing component, the pressing component is arranged at the middle position of the top of the collar, and the pressing component presses the charging gun button; A buckle stability detection component, the buckle stability detection component is arranged on the two piston cylinders, and the buckle stability detection component detects the positioning strength of the charging gun buckle.

[0006] Preferably, the exhaust end of the exhaust pipe is Y-shaped, and the two exhaust ports of the exhaust pipe are flared. The exhaust end of the exhaust pipe is located between the outer peripheral walls of the corresponding piston cylinder and the charging interface.

[0007] Preferably, the injection and extraction mechanism includes an injection and exhaust device. The injection and exhaust device is arranged below the piston cylinder and is fixedly connected to the base. The connecting end of the injection and exhaust device is communicated with a soft tube, and the top end of the soft tube fixedly penetrates the bottom side wall of the corresponding piston cylinder.

[0008] Preferably, the guiding mechanism includes a slide rail. The slide rail is arranged between the two injection and exhaust devices, and the bottom side of the slide rail is fixedly connected to the base. A slider with a T-shaped cross-section is slidably arranged in the inner cavity of the slide rail, and the top side of the slider is fixedly connected to the collar.

[0009] Preferably, the buckle stability detection assembly includes a piston plate. The piston plate is arranged between the corresponding first piston rod and the inner wall of the corresponding piston cylinder, and the outer peripheral wall of the piston plate is in contact with the inner wall of the corresponding piston cylinder. Air is filled between the piston plate and the plug plate of the first piston rod. The tail end of the piston cylinder is threadedly penetrated and provided with a threaded rod, and the threaded rod is rotatably connected to the corresponding piston plate.

[0010] Preferably, a first limiting ring is sleeved on the outer peripheral side of the first piston rod, and the outer peripheral wall of the first limiting ring is fixedly connected to the inner wall of the corresponding piston cylinder. The intake end of the exhaust pipe and the exhaust end of the soft tube are both located between the corresponding first limiting ring and the inner wall of the corresponding piston cylinder.

[0011] Preferably, a second limiting ring is arranged between the first piston rod and the corresponding piston plate, and the outer peripheral wall of the second limiting ring is fixedly connected to the inner wall of the corresponding piston cylinder.

[0012] Preferably, the pressing assembly includes a second piston rod. A storage groove is formed in the inner wall of the collar at the position corresponding to the charging gun button. The top of the second piston rod is slidably arranged in the storage groove, and the bottom end of the second piston rod is in an arc shape with the outer ring edge bulging towards the center position and is in contact with the button of the charging gun.

[0013] Preferably, a one-way exhaust valve and a one-way intake valve are relatively fixedly penetrated and arranged on the top side of the piston cylinder. The intake end of the one-way exhaust valve and the exhaust end of the one-way intake valve are both located between the corresponding first limiting ring and the inner wall of the corresponding piston cylinder. The exhaust end of the one-way exhaust valve is communicated with a first connecting pipe, and the exhaust end of the first connecting pipe is fixedly inserted into the ring wall of the collar and extends to the top side of the second piston rod. The intake end of the one-way intake valve is communicated with a second connecting pipe, and the intake end of the second connecting pipe is fixedly inserted into the ring wall of the collar and extends to the bottom side of the plug plate of the second piston rod.

[0014] Preferably, two air inlets are formed on one side of the collar away from the charging interface, and the two air inlets are relatively arranged on the upper and lower sides of the second piston rod plug plate. The inside of the air inlets communicates with the inside of the storage tank.

[0015] The present invention has at least the following beneficial effects: 1. When the improved charging gun life detection device is in use, during the process of the charging gun being connected to the charging interface, the cooling treatment of the head end of the charging gun and the charging interface can be synchronously completed, so as to simulate that the charging gun and the charging interface will not be used again until a long time after a single charge is completed, thereby avoiding the influence of the internal connection structure of the charging gun and the flashlight interface on the detection effect, and making the detection result of the plugging and unplugging life of the charging gun more accurate; 2. During the process of the charging gun being pulled out of the charging interface, a thrust in the direction away from the charging interface can be applied to the charging gun to detect the positioning strength of the charging gun buckle, making the life detection of the charging gun more comprehensive, avoiding the influence of the life of the charging gun buckle on the detection result of the plugging and unplugging life of the charging gun, and making the detection result of the plugging and unplugging life of the charging gun more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is the front view of the overall structure of the present invention; Figure 2 It is the three-dimensional view of the overall structure of the charging interface and the charging gun of the present invention; Figure 3 It is the three-dimensional view of the internal structure of the collar of the present invention; Figure 4 It is the front view of the internal structure of the sleeve of the present invention; Figure 5 For the present invention Figure 4 The enlarged view of the structure at A in; Figure 6 It is the three-dimensional view of the internal structure of the piston cylinder of the present invention; Figure 7 For the present invention Figure 6 The enlarged view of the structure at B in; Figure 8 It is the front view of the internal structure of the piston cylinder of the present invention; Figure 9 It is the three-dimensional view of the overall structure of the slide rail and the slider of the present invention; Figure 10It is a three-dimensional view of the internal structure of a part of the piston barrel of the present invention; Figure 11 It is a front view of the internal structure of the collar of the present invention.

[0018] In the figure: 1. Base; 2. Charging interface; 3. Charging gun; 4. Plug and unplug life detection component; 41. Collar; 42. First piston rod; 43. Piston barrel; 44. Injection and extraction mechanism; 441. Injection and exhaust device; 442. Soft tube; 45. Guiding mechanism; 451. Slide rail; 452. Slide block; 46. Exhaust pipe; 5. Buckle stability detection component; 51. Piston plate; 52. Threaded rod; 53. First limiting ring; 54. Second limiting ring; 6. Pressing component; 61. Storage tank; 62. Second piston rod; 63. One-way exhaust valve; 64. One-way intake valve; 65. First connecting pipe; 66. Second connecting pipe; 67. Intake hole. Detailed implementation manners

[0019] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] The present invention provides a technical solution: Refer to Figure 1 - Figure 7 , a life detection device for a charging gun of a new energy charging pile disclosed by the present invention, includes a base 1, a charging interface 2 and a charging gun 3; It further includes: A plug and unplug life detection component 4, the plug and unplug life detection component 4 includes a collar 41, the charging interface 2 is fixedly installed through the top end on one side of the base 1, the charging gun 3 is arranged on the other side of the top end, and the collar 41 is fixedly sleeved on the outer peripheral side of the charging gun 3. Two first piston rods 42 are oppositely arranged on the outer peripheral side of the charging interface 2, and one end of each first piston rod 42 is fixedly connected to the base 1 through a bolt. The other end of the first piston rod 42 is slidably sleeved with a piston barrel 43, and the piston barrel 43 is fixedly connected to the corresponding side wall of the collar 41. A injection and extraction mechanism 44 is arranged at the bottom side of the piston barrel 43, a guiding mechanism 45 is arranged at the bottom side of the collar 41, two exhaust pipes 46 are oppositely arranged between the two piston barrels 43, and the intake end of each exhaust pipe 46 is fixedly installed through the barrel wall of the piston barrel 43; A pressing component 6, the pressing component 6 is arranged at the middle position on the top of the collar 41, and the pressing component 6 presses the button of the charging gun 3; A buckle stability detection component 5, the buckle stability detection component 5 is arranged on the two piston barrels 43, and the buckle stability detection component 5 detects the positioning strength of the buckle of the charging gun 3; In this embodiment, it should be noted that the base 1 is installed on the loading platform of the charging gun 3 life detection device, and the control host of the charging gun 3 life detection device controls the operation of the device. At the same time, after the charging gun 3 and the charging interface 2 are connected, the detection structure of the charging gun 3 life detection device completes the life detection of the charging gun 3. The inside of the base 1 is hollow to reduce the production cost and weight of the base 1; the charging interface 2 is connected to the base 1 by bolts; two threaded shafts are relatively screwed at the middle position on the outer peripheral side of the collar 41, and there is a rubber block between the threaded shaft and the charging gun 3. One end of the rubber block is fixedly connected to the corresponding threaded shaft, and the other end of the rubber block is in contact with the outer wall of the charging gun 3; a sealing ring is fixedly installed on the barrel wall at the open end of the piston cylinder 43, and the inner ring wall of the sealing ring is in contact with the outer peripheral side of the corresponding first piston rod 42; When the improved charging gun 3 life detection device is in use, the air injection and extraction mechanism 44 reciprocates to inject air into the piston cylinder 43 or extract the air in the piston cylinder 43, so as to push part of the first piston rod 42 into or out of the outer cylinder or pull out the first piston rod 42 retracted into the piston cylinder 43 from the piston cylinder 43, so that the head of the charging gun 3 reciprocates to insert into the charging interface 2 or be pulled out from the charging interface 2 to complete the detection of the plug and unplug life of the charging gun 3. And when the head of the charging gun 3 approaches the charging interface 2, air flows are synchronously discharged from the two exhaust ports of the exhaust pipe 46. The gas discharged from one of the exhaust ports of the exhaust pipe 46 blows into the holes on the plug of the charging gun 3 to cool the plug of the charging gun 3, while the gas discharged from the other exhaust port of the exhaust pipe 46 blows on the power connection rod of the charging interface 2 to cool the charging interface 2, so as to simulate that the charging gun 3 and the charging interface 2 will not be used again until a long time after a single charge, thereby avoiding the influence of the internal connection structure of the charging gun 3 and the flashlight interface on the detection effect and making the detection result of the plug and unplug life of the charging gun 3 more accurate; During the process of injecting gas into the piston cylinder 43 or extracting gas from the piston cylinder 43, the pressing assembly 6 is synchronously driven to operate to complete the pressing operation of the button of the charging gun 3, so that when the head of the charging gun 3 is inserted into the charging interface 2, the buckle of the charging gun 3 automatically completes the positioning constraint between the charging gun 3 and the charging interface 2, or when the head of the charging gun 3 is pulled out from the charging interface 2, the positioning constraint state between the charging gun 3 and the charging interface 2 is automatically released. And when the positioning constraint state between the charging gun 3 and the charging interface 2 is released, the buckle stability detection assembly 5 is driven to operate to apply a thrust to the charging gun 3 in a direction away from the charging interface 2 to detect the positioning strength of the buckle of the charging gun 3, making the life detection of the charging gun 3 more comprehensive, avoiding the influence of the life of the buckle of the charging gun 3 on the detection result of the plug and unplug life of the charging gun 3, and making the detection result of the plug and unplug life of the charging gun 3 more accurate.

[0021] In a further preferred embodiment of the present invention, such as Figure 1 andFigure 6 As shown, the exhaust end of the exhaust pipe 46 is Y-shaped, and the two exhaust ports of the exhaust pipe 46 are flared. The exhaust end of the exhaust pipe 46 is located between the corresponding piston cylinder 43 and the outer peripheral wall of the charging interface 2; In this embodiment, it should be noted that: there is a gap between the exhaust end of the exhaust pipe 46 and the outer peripheral wall of the charging interface 2, so that the exhaust pipe 46 will not conflict with the charging interface 2 during the movement process; According to Figure 6 and Figure 7 As shown, when part of the gas injected into the piston cylinder 43 is discharged from the exhaust pipe 46, the gas first flows into the exhaust pipe 46 from the air inlet of the exhaust pipe 46, and then divides into two streams and flows into the two exhaust pipes 46 of the exhaust pipe 46. Due to the expansion of the space in the two exhaust ports of the exhaust pipe 46, the gas flowing into the exhaust ports of the exhaust pipe 46 automatically diffuses outwards to enhance the blowing area of the gas discharged from the exhaust pipe 46, thereby avoiding the problem that the blowing area of the airflow on the charging gun 3 or the charging interface 2 is too small and affecting the charging gun 3.

[0022] In a further preferred embodiment of the present invention, as Figure 2 , Figure 6 and Figure 8 As shown, the injection and extraction mechanism 44 includes an injection and exhaust device 441. The injection and exhaust device 441 is arranged below the piston cylinder 43, and the injection and exhaust device 441 is fixedly connected to the base 1. The connecting end of the injection and exhaust device 441 is connected and provided with a flexible tube 442, and the top end of the flexible tube 442 is fixedly penetrated through the bottom side wall of the corresponding piston cylinder 43; In this embodiment, it should be noted that: the injection and exhaust device 441 is mainly composed of a housing and two air pump bodies. The injection and exhaust device 441 continuously extracts the gas in the flexible tube 442 or continuously injects gas into the flexible tube 442; According to Figure 6 and Figure 8 As shown, during the use of the device, the injection and exhaust device 441 extracts the gas between the outer peripheral wall of the piston rod 42 of the first piston rod and the inner wall of the piston cylinder 43 through the flexible tube 442, or injects gas between the outer peripheral wall of the piston rod 42 of the first piston rod and the inner wall of the piston cylinder 43, so as to form a high-pressure chamber or a negative-pressure chamber between the outer peripheral wall of the piston rod 42 of the first piston rod and the inner wall of the piston cylinder 43, thereby driving part of the first piston rod 42 to retract into the piston cylinder 43 or moving the first piston rod 42 retracted into the piston cylinder 43 outwards through the pressure difference on both sides of the piston plate of the first piston rod 42. As the piston cylinder 43 moves, the flexible tube 442 automatically deforms and tilts adaptively, so that the position of the injection and exhaust device 441 will not change during the movement process of the piston cylinder 43, which facilitates the circuit connection of the injection and exhaust device 441.

[0023] In a further preferred embodiment of the present invention, asFigure 2 and Figure 9 As shown in Figure 9 , the guiding mechanism 45 includes a slide rail 451. The slide rail 451 is arranged between two injection and exhaust devices 441, and the bottom side of the slide rail 451 is fixedly connected to the base 1. A slider 452 with a T-shaped cross-section is slidably installed in the inner cavity of the slide rail 451, and the top side of the slider 452 is fixedly connected to the collar 41; In this embodiment, according to Figure 2 and Figure 9 As shown in Figure 9 , during the process of the collar 41 moving towards or away from the charging interface 2, the slider 452 is synchronously driven to slide in the inner cavity of the slide rail 451. Due to the mutual contact between the slider 452 and the inner wall of the slide rail 451, the collar 41 moves along a linear trajectory, avoiding the occurrence of a positional deviation between the charging gun 3 and the charging interface 2 during the linear movement of the charging gun 3, which may cause the charging gun 3 and the charging interface 2 to come into contact with each other and damage the charging gun 3 or the charging interface 2.

[0024] In a further preferred embodiment of the present invention, as Figure 6 shown in Figure 6 , the buckle stability detection component 5 includes a piston plate 51. The piston plate 51 is arranged between the corresponding first piston rod 42 and the inner wall of the corresponding piston cylinder 43, and the outer peripheral wall of the piston plate 51 is in contact with the inner wall of the corresponding piston cylinder 43. Air is filled between the piston plate 51 and the plug plate of the first piston rod 42. The tail end of the piston cylinder 43 is threadedly penetrated and installed with a threaded rod 52, and the threaded rod 52 is rotatably connected to the corresponding piston plate 51; In this embodiment, before using the device, according to Figure 6 shown in Figure 6 , the operator turns the threaded rod 52 to push the piston plate 51 to reciprocate in the piston cylinder 43, so as to adjust the size of the space between the piston plate 51 and the plug plate of the first piston plate 51 according to the usage requirements of the device, so as to adjust the pressure between the piston plate 51 and the plug plate of the first piston rod 42, and further adjust the magnitude of the reaction force received by the charging gun 3 after the charging interface 2 and the charging gun 3 are connected, so that the device can adapt to the life detection of charging guns 3 of different qualities.

[0025] In a further preferred embodiment of the present invention, as Figure 6 and Figure 7 shown in Figure 7 , a first limiting ring 53 is sleeved on the outer peripheral side of the first piston rod 42, and the outer peripheral wall of the first limiting ring 53 is fixedly connected to the inner wall of the corresponding piston cylinder 43. The intake end of the exhaust pipe 46 and the exhaust end of the flexible pipe 442 are both located between the corresponding first limiting ring 53 and the inner wall of the corresponding piston cylinder 43; In this embodiment, according to Figure 6 and Figure 8As shown, during the process of the first piston rod 42 extending out of the piston cylinder 43, the maximum length of the first piston rod 42 extending out of the piston cylinder 43 can be restricted by the mutual contact between the first piston rod 42 and the first limiting ring 53, so as to prevent the plug plate of the first piston rod 42 from moving to the intake end of the exhaust pipe 46 or the exhaust end of the flexible pipe 442, which may affect the use of the device.

[0026] In a further preferred embodiment of the present invention, as Figure 6 and Figure 8 shown, a second limiting ring 54 is provided between the first piston rod 42 and the corresponding piston plate 51, and the outer peripheral wall of the second limiting ring 54 is fixedly connected to the inner wall of the corresponding piston cylinder 43; In this embodiment, according to Figure 6 and Figure 8 shown, during the process of the first piston rod 42 retracting into the piston cylinder 43, the maximum length of the first piston rod 42 retracting into the piston cylinder 43 can be restricted by the mutual contact between the first piston rod 42 and the second limiting ring 54, so as to prevent the length of the first piston rod 42 retracting into the piston cylinder 43 from being too long, which may cause the charging gun 3 to continue to contact the charging interface 2 after being inserted into the charging interface 2, thus damaging the charging gun 3 or the charging interface 2 and affecting the use of the device.

[0027] In a further preferred embodiment of the present invention, as Figure 4 and Figure 5 shown, the pressing assembly 6 includes a second piston rod 62. A storage groove 61 is formed in the inner wall of the collar 41 at the position corresponding to the button of the charging gun 3. The top of the second piston rod 62 is slidably installed in the storage groove 61, and the bottom end of the second piston rod 62 is provided with an arc-shaped surface that bulges from the outer ring edge to the center position and contacts the button of the charging gun 3; In this embodiment, it should be noted that: a sealing ring is fixedly installed in the ring wall of the collar 41 at the position corresponding to the second piston rod 62, and the inner ring wall of the sealing ring contacts the outer peripheral wall of the second piston rod 62; According to Figure 4 and Figure 5 shown, during the process of the charging gun 3 moving towards the charging interface 2, a part of the second piston rod 62 slides out of the storage groove 61. Due to the mutual contact between the arc-shaped surface at the bottom end of the second piston rod 62 and the button of the charging gun 3, the button of the charging gun 3 can be pressed obliquely along the arc-shaped surface at the bottom end of the second piston rod 62 until the second piston rod 62 contacts the inner wall of the storage groove 61, and the pressing of the button of the charging interface 2 is completed. Thus, during the process of the head end of the charging gun 3 being inserted into the charging interface 2, the buckle of the charging gun 3 can synchronously complete the positioning constraint between the charging gun 3 and the charging interface 2.

[0028] In a further preferred embodiment of the present invention, as Figure 4 、 Figure 5, Figure 10 and Figure 11 As shown in Figure 10 and Figure 11 , a one-way exhaust valve 63 and a one-way intake valve 64 are relatively fixedly penetrated and installed on the top side of the piston cylinder 43. The intake end of the one-way exhaust valve 63 and the exhaust end of the one-way intake valve 64 are both located between the corresponding first limit ring 53 and the inner wall of the corresponding piston cylinder 43. The exhaust end of the one-way exhaust valve 63 is connected and installed with a first connecting pipe 65, and the exhaust end of the first connecting pipe 65 is fixedly inserted into the wall of the collar 41 and extends to the top side of the second piston rod 62. The intake end of the one-way intake valve 64 is connected and installed with a second connecting pipe 66, and the intake end of the second connecting pipe 66 is fixedly inserted into the wall of the collar 41 and extends to the bottom side of the plug plate of the second piston rod 62; In this embodiment, it should be noted that: the above-mentioned first connecting pipe 65 and second connecting pipe 66 are both soft connecting pipes; According to Figure 10 and Figure 11 As shown in Figure 10 and Figure 11 , during the process of the injection and exhaust device 441 injecting gas into the piston cylinder 43, a small amount of gas injected into the storage tank 61 flows into the first connecting pipe 65 from the one-way exhaust valve 63. Since the amount of gas flowing out of the one-way exhaust valve 63 is limited, the pressure in the piston cylinder 43 will still continue to rise, and a high-pressure cavity will be formed at the top of the storage tank 61, thereby applying a downward thrust to the second piston rod 62. During the process of the injection and exhaust device 441 extracting the gas in the piston cylinder 43, the gas at the bottom of the storage tank 61 can be continuously extracted synchronously through the one-way intake valve 64 and the second connecting pipe 66, so as to form a negative-pressure cavity at the bottom of the storage tank 61, and then apply a downward thrust to the second piston rod 62, without the operator performing other operations and without setting an additional driving source, reducing the production cost of the device.

[0029] In a further preferred embodiment of the present invention, as Figure 4 , Figure 5 and Figure 11 As shown in Figure 4 , Figure 5 and Figure 11 , two intake holes 67 are opened on the side of the collar 41 away from the charging interface 2, and the two intake holes 67 are relatively arranged on the upper and lower sides of the plug plate of the second piston rod 62, and the inside of the intake holes 67 is communicated with the inside of the storage tank 61; In this embodiment, according to Figure 5 and Figure 11As shown, during the process of gas in the first connecting tube 65 flowing into the storage tank 61, or during the process of gas at the bottom of the storage tank 61 flowing into the second connecting tube 66, external gas simultaneously flows into the storage tank 61 through the air inlet 67, and since the amount of gas passing through the air inlet 67 is limited, a high-pressure chamber will still be formed at the top of the storage tank 61 or a negative-pressure chamber will still be formed at the bottom of the storage tank 61, thereby preventing a negative-pressure chamber from being formed at the bottom of the storage tank 61 or a high-pressure chamber from being formed at the top of the storage tank 61 during the upward movement of the piston rod in the storage tank 61, so as to affect the upward movement and reset of the second piston rod 62 during the button reset process of the charging gun 3.

[0030] Working principle: When the improved charging gun life detection device is used, the operator first reverses the threaded shaft to pull the rubber block into the ring wall of the collar 41, then inserts the charging gun 3 into the collar 41, and makes the collar 41 sleeved at the corresponding position on the outer circumference of the charging gun 3, and then forwardly rotates the threaded shaft to push the rubber block and the outer shell of the charging gun 3 to contact each other, thereby connecting the collar 41 and the charging gun 3 together by clamping and fixing, and the installation of the charging gun 3 is completed; After the charging gun 3 is installed, the operator twists the threaded rod 52 to push the piston plate 51 to move back and forth in the piston cylinder 43, thereby adjusting the space between the piston plate 51 and the first piston plate 51 according to the use requirements of the device, so as to adjust the reverse thrust force on the charging gun 3 after the charging interface 2 and the charging gun 3 are connected; After the device adjustment is completed, the control host controls the injection and exhaust device 441 to start injecting gas into the storage cylinder through the soft tube 442. As the air pressure between the first piston rod 42 and the inner wall of the piston cylinder 43 continues to increase, when a pressure difference is generated on both sides of the plug plate of the first piston rod 42, due to the push of the gas on the plug plate of the first piston rod 42, part of the first piston rod 42 gradually retracts into the piston cylinder 43, thereby driving the ring 41 to slowly move toward the charging interface 2. When the first piston rod 42 and the second limiting ring 54 collide with each other, the head end of the charging gun 3 is inserted into the charging interface 2, and the connection between the charging interface 2 and the charging gun 3 is completed. While the injection and exhaust device 441 injects gas into the piston cylinder 43, part of the gas flows into the air inlet of the exhaust pipe 46, and then flows out from the two exhaust ports of the exhaust pipe 46. Since the air intake at the air inlet of the exhaust pipe 46 is limited, the pressure in the piston cylinder 43 will continue to increase. The gas discharged from one of the exhaust ports of the exhaust pipe 46 is blown into the holes on the plug of the charging gun 3 to cool the plug of the charging gun 3, and the gas discharged from the other exhaust port of the exhaust pipe 46 is blown on the connecting pole of the charging interface 2 to cool the charging interface 2. As the distance between the exhaust pipe 46 and the charging interface 2 is shortened, the position of the gas blowing the charging interface 2 is adjusted accordingly until the head end of the charging gun 3 is inserted into the charging interface 2. It should be noted that since the two exhaust ports of the exhaust pipe 46 are flared, when the gas is discharged from the exhaust ports of the exhaust pipe 46, the blowing area of the gas can be greatly expanded; While the injection and exhaust device 441 injects gas into the piston cylinder 43, a small amount of the other part of the gas in the piston cylinder 43 flows into the first connecting pipe 65 from the one-way exhaust valve 63. Since the amount of gas flowing out from the one-way exhaust valve 63 is limited, the pressure in the piston cylinder 43 will still continue to rise. The gas injected into the first connecting pipe 65 is introduced into the storage tank 61 at the top, and a small part of the gas injected into the storage tank 61 is discharged from the intake hole 67 at the top. Since the amount of gas discharged from the intake hole 67 is limited, a high-pressure chamber can still be formed at the top of the storage tank 61, thereby applying a downward thrust to the second piston rod 62, so that a part of the second piston rod 62 slides out of the storage tank 61 to press the button of the charging interface 2 until the second piston rod 62 abuts against the inner wall of the storage tank 61, and the pressing of the button of the charging interface 2 is completed; After the connection between the charging interface 2 and the charging gun 3 is completed, the plugging and unplugging life detection of the charging gun 3 is completed by the detection structure of the charging gun 3 life detection device; During the life detection of the charging gun 3, the injection and exhaust device 441 operates to slowly and uniformly extract the gas in the piston cylinder 43 through the flexible pipe 442. At the same time, as shown above, the gas located on the outer peripheral side of the first piston rod 42 in the storage tank 61 is continuously discharged from the exhaust pipe 46 and the intake hole 67, so that the air pressure intensity on the outer peripheral side of the first piston rod 42 is rapidly reduced. After the air pressure intensity in the storage tank 61 reaches the threshold value, due to the pushing of the second piston rod 62 during the reset process of the charging gun 3 button, the second piston rod 62 that has slid out of the storage tank 61 retracts into the storage tank 61 again, so that the buckle of the charging gun 3 completes the positioning constraint state between the charging gun 3 and the charging interface 2, locking the connection state between the charging gun 3 and the charging interface 2. Subsequently, when a negative pressure chamber is formed on the outer peripheral side of the first piston rod 42, the gas at the bottom of the storage tank 61 is continuously extracted through the one-way intake valve 64 and the second connecting pipe 66, so that a negative pressure chamber is formed at the bottom of the storage tank 61, thereby pushing a part of the second piston rod 62 to extend out of the storage tank 61 to complete the pressing of the charging gun 3 button, and releasing the clamping and fixing state between the charging gun 3 and the charging interface 2; During the process of the injection and exhaust device 441 extracting the gas in the piston cylinder 43, when a pressure difference is formed on both sides of the plug plate of the first piston rod 42, due to the pushing of the gas between the piston plate 51 and the plug plate of the first piston rod 42 on the first piston rod 42, a thrust can be applied to the first piston rod 42, thereby applying a thrust in the direction away from the charging interface 2 to the charging gun 3 through the collar 41, and reaching the threshold value when the pressing of the charging gun 3 button is completed, to detect the positioning strength of the buckle of the charging gun 3; After the buckle of the contact charging gun 3 positions and restricts the charging gun 3 and the charging interface 2, the head end of the charging gun 3 is pulled out from the charging interface 2, and then, according to the above, the piston cylinder 43 is repeatedly inflated or the gas in the piston cylinder 43 is pumped out through the injection and exhaust device 441, so that the charging gun 3 and the charging interface 2 repeatedly complete the plugging and unplugging operations to complete the plugging and unplugging life test of the charging gun 3.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy charging pile charging gun life detection device, comprising a base (1), a charging interface (2) and a charging gun (3); It is characterized in that Also includes: A plug-in life detection assembly (4), the plug-in life detection assembly (4) comprising a collar (41), the charging interface (2) being fixedly penetrated and installed at the top end of one side of the base (1), the charging gun (3) being arranged at the other side of the top end of the top side, and the collar (41) being fixedly sleeved on the outer peripheral side of the charging gun (3), two first piston rods (42) being arranged oppositely on the outer peripheral side of the charging interface (2), and one end of each first piston rod (42) being fixedly connected to the base (1) by a bolt, a piston cylinder (43) being slidably sleeved on the other end of the first piston rod (42), and the piston cylinder (43) being fixedly connected to the corresponding side wall of the collar (41), an air injection and extraction mechanism (44) being arranged at the bottom side of the piston cylinder (43), a guide mechanism (45) being arranged at the bottom side of the collar (41), two exhaust pipes (46) being arranged oppositely between the two piston cylinders (43), and the air inlet end of each exhaust pipe (46) being fixedly penetrated through the cylinder wall of the piston cylinder (43); A pressing component (6), the pressing component (6) being arranged at a middle position on the top of the collar (41), and the pressing component (6) pressing a button of the charging gun (3); A buckle stability detection component (5), wherein the buckle stability detection component (5) is arranged on two piston cylinders (43), and the buckle stability detection component (5) detects the positioning strength of the buckle of the charging gun (3).

2. A new energy charging pile charging gun life detection device according to claim 1, characterized in that: The exhaust end of the exhaust pipe (46) is arranged in a Y shape, and the two exhaust ports of the exhaust pipe (46) are arranged in a flared shape. The exhaust end of the exhaust pipe (46) is located between the corresponding piston cylinder (43) and the outer peripheral wall of the charging interface (2).

3. A new energy charging pile charging gun life detection device according to claim 2, characterized in that: The injection and exhaust mechanism (44) comprises an injection and exhaust device (441), which is arranged below the piston cylinder (43) and fixedly connected to the base (1). A soft tube (442) is installed at the connecting end of the injection and exhaust device (441), and the top end of the soft tube (442) is fixedly passed through the bottom wall of the corresponding piston cylinder (43).

4. A new energy charging pile charging gun life detection device according to claim 3, characterized in that: The guide mechanism (45) comprises a slide rail (451), the slide rail (451) being arranged between the two injection and exhaust devices (441), and the bottom side of the slide rail (451) being fixedly connected to the base (1), a slider (452) having a T-shaped cross section being slidably mounted in the inner cavity of the slide rail (451), and the top side of the slider (452) being fixedly connected to the collar (41).

5. A new energy charging pile charging gun life detection device according to claim 4, characterized in that: The buckle stability detection component (5) includes a piston plate (51), wherein the piston plate (51) is arranged between the corresponding first piston rod (42) and the inner wall of the corresponding piston cylinder (43), and the outer peripheral wall of the piston plate (51) is in contact with the inner wall of the corresponding piston cylinder (43), and the space between the piston plate (51) and the plug plate of the first piston rod (42) is filled with air, and a threaded rod (52) is installed through the thread at the rear end of the piston cylinder (43), and the threaded rod (52) is rotatably connected to the corresponding piston plate (51).

6. A new energy charging pile charging gun life detection device according to claim 5, characterized in that: A first limiting ring (53) is sleeved on the outer peripheral side of the first piston rod (42), and the outer peripheral wall of the first limiting ring (53) is fixedly connected to the inner wall of the corresponding piston cylinder (43), and the air inlet end of the exhaust pipe (46) and the exhaust end of the soft pipe (442) are both located between the corresponding first limiting ring (53) and the inner wall of the corresponding piston cylinder (43).

7. A new energy charging pile charging gun life detection device according to claim 6, characterized in that: A second limiting ring (54) is provided between the first piston rod (42) and the corresponding piston plate (51), and the outer peripheral wall of the second limiting ring (54) is fixedly connected to the inner wall of the corresponding piston cylinder (43).

8. A new energy charging pile charging gun life detection device according to claim 7, characterized in that: The pressing assembly (6) comprises a second piston rod (62); a storage groove (61) is provided on the inner wall of the collar (41) at a position corresponding to the button of the charging gun (3); the top of the second piston rod (62) is slidably mounted in the storage groove (61); and the bottom end of the second piston rod (62) is in the shape of an arc surface that bulges from the outer ring edge toward the center position and contacts the button of the charging gun (3).

9. A new energy charging pile charging gun life detection device according to claim 8, characterized in that: A one-way exhaust valve (63) and a one-way intake valve (64) are relatively fixedly installed on the top side of the piston cylinder (43). The intake end of the one-way exhaust valve (63) and the exhaust end of the one-way intake valve (64) are both located between the corresponding first limiting ring (53) and the inner wall of the corresponding piston cylinder (43). The exhaust end of the one-way exhaust valve (63) is connected to a first connecting pipe (65), and the exhaust end of the first connecting pipe (65) is fixedly inserted into the ring wall of the collar (41) and extends to the top side of the second piston rod (62). The intake end of the one-way intake valve (64) is connected to a second connecting pipe (66), and the intake end of the second connecting pipe (66) is fixedly inserted into the ring wall of the collar (41) and extends to the bottom side of the plug plate of the second piston rod (62).

10. A new energy charging pile charging gun life detection device according to claim 9, characterized in that: Two air inlet holes (67) are provided on a side of the collar (41) away from the charging interface (2), and the two air inlet holes (67) are arranged oppositely on the upper and lower sides of the plug plate of the second piston rod (62), and the interior of the air inlet holes (67) is communicated with the interior of the storage tank (61).

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