Charging pile fault detection device and detection method

Abstract

A charging pile fault detection device disclosed by the present invention comprises a fault detection body provided with moving wheels, the front end part of the fault detection body is provided with an operation panel and a plurality of jacks, and the top of the fault detection body is provided with a baffle assembly used for protecting the operation panel and the jacks. The bottom of the fault detection body is provided with a supporting mechanism used for supporting the fault detection body, the side portion of the fault detection body is provided with a driving mechanism used for driving the baffle assembly and the supporting mechanism to move, the top of the fault detection body is provided with a switching mechanism, and the switching mechanism is used for switching connection of the baffle assembly, the supporting mechanism and the driving mechanism. The device can switch a detection working state and a carrying state, has the effects of protection and stable supporting, and solves the problems that an existing fault detection device is lack of protection measures and is liable to shake and damage. In addition, the invention further provides a charging pile fault detection method, the performance and functions of detection equipment are improved, and the detection efficiency of the charging pile is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of fault detection device technology, and in particular to a charging pile fault detection device and detection method. Background Technology

[0002] With the rapid popularization of new energy vehicles, the reliability and operation and maintenance efficiency of charging infrastructure have become key factors affecting user experience and power grid safety. Statistics show that charging piles experience various types of faults, including electrical faults, communication interruptions, and mechanical damage. As the core infrastructure for electric vehicle charging, the operational reliability and fault detection efficiency of charging piles directly impact user experience and power grid safety. Currently, fault detection of charging piles mainly relies on two methods: one is laboratory testing, which involves offline testing of charging piles in a fixed laboratory to simulate the operating environment and test equipment performance. This method offers high accuracy but requires disassembling and transporting the charging piles to the laboratory, resulting in a long testing cycle, high costs, and an inability to reflect fault characteristics in actual operating environments. The other method is on-site testing, where maintenance personnel carry portable testing equipment to the charging pile site for testing. While this method avoids equipment disassembly, the performance and functionality of the testing equipment are limited, making it difficult to comprehensively cover all types of charging pile faults, and the testing efficiency is low.

[0003] Furthermore, existing fault detection technologies face the following technical bottlenecks in practical applications: laboratory testing relies on fixed sites and equipment, failing to meet the immediate testing needs of charging piles and leading to delayed fault handling; simultaneously, on-site testing largely depends on manual operation, with cumbersome procedures and long testing times, making it difficult to adapt to the operation and maintenance needs of large-scale charging networks. Existing testing equipment struggles to simulate the complex environmental conditions (such as temperature, humidity, and vibration) of actual charging pile operation, resulting in discrepancies between test results and actual fault characteristics; moreover, traditional testing equipment is often designed for specific fault types, lacking comprehensive testing capabilities and making it difficult to fully assess the operational status of charging piles.

[0004] To address the aforementioned issues, the industry has developed mobile testing platforms to enable real-time detection and fault diagnosis of charging piles. However, existing testing devices require the device to be removed from the warehouse, placed on a vehicle, and then transported to the designated location for testing. This is extremely inconvenient. Furthermore, the control panel of the device is easily damaged by collisions during transport due to the lack of protective structure. In addition, the existing fault detection devices are prone to shaking during transportation, as they are equipped with wheels, further increasing the risk of collision damage. Summary of the Invention

[0005] The purpose of this invention is to provide a vehicle-mounted charging pile fault detection device. Its mobile design overcomes the limitations of fixed-site detection, providing technical support for the efficient operation and maintenance of charging infrastructure. It can switch between detection and transport modes, offering both protection and stable support. This effectively addresses the problems mentioned in the background section regarding the lack of protective measures and the increased risk of collision damage due to shaking during vehicle transport. Furthermore, this invention integrates aging, voltage, and temperature sampling and analysis functions, and provides corresponding charging pile fault detection methods. This improves the performance and functionality of the detection equipment, significantly increasing the detection efficiency of charging piles. It also solves the problem that existing portable detection devices, due to their limited performance and functionality, cannot comprehensively cover all types of charging pile faults and suffer from low detection efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a charging pile fault detection device, comprising a fault detection body equipped with moving wheels, an operation panel and several sockets at the front end of the fault detection body, a baffle assembly for protecting the operation panel and sockets at the top of the fault detection body, a support mechanism for supporting the fault detection body at the bottom of the fault detection body, a drive mechanism for driving the baffle assembly and the support mechanism to move at the side of the fault detection body, and a switching mechanism at the top of the fault detection body for switching the connection between the baffle assembly, the support mechanism and the drive mechanism.

[0008] As one of the technical solutions of the present invention, the driving mechanism includes vertically distributed movable blocks and a linear driver for driving the movable blocks to move in the vertical direction. The linear driver is fixedly installed on the side of the fault detection body. One side of the movable block is provided with a rack portion, and the other side of the movable block is provided with a pressing groove. The pressing groove is connected to a T-shaped block through an elastic reset mechanism.

[0009] As a preferred embodiment of the present invention, the linear actuator is an electric telescopic rod.

[0010] As one of the technical solutions of the present invention, the elastic reset mechanism includes a reset rod, a mounting sleeve and a reset spring sleeved on the reset rod, the reset rod being perpendicularly distributed to the side surface of the fault detection body, the mounting sleeve being fixedly connected to the T-shaped block, and the two ends of the reset spring being fixedly connected to the inner wall of the mounting sleeve and the extrusion groove, respectively.

[0011] As one of the technical solutions of the present invention, the support mechanism includes a support plate and a connecting plate that is vertically fixedly connected to the support plate. The upper part of the connecting plate near the movable block is provided with a T-shaped hole that is slidably connected to the T-shaped block.

[0012] As one of the technical solutions of the present invention, the support plate is provided with at least one vertically distributed guide rod, and the side of the fault detection body is provided with a guide sleeve that slides with the guide rod.

[0013] As one of the technical solutions of the present invention, the baffle assembly includes a protective plate and a rotating rod that is vertically fixedly connected to the protective plate. A gear is fixedly provided at one end of the rotating rod away from the protective plate. The gear is rotatably connected to the side of the fault detection body through a mounting shaft. A linkage gear is meshed between the gear and the rack.

[0014] As one of the technical solutions of the present invention, the protective plate is equipped with a protective component, which includes a protective cover and a pressure plate. The protective plate has an assembly groove for movably installing the protective cover on the side near the fault detection body. At least one elastic connecting component is connected between the inner wall of the assembly groove and the protective cover. A guide hole is provided on one side of the assembly groove and is slidably connected to the pressure plate. One end of the pressure plate extends out of the guide hole, and at least one push rod is rotatably connected to the other end of the pressure plate. The end of the push rod away from the pressure plate is rotatably connected to the protective cover. A fixing plate for pushing the pressure plate is provided at the front end of the fault detection body.

[0015] As a preferred embodiment of the present invention, the elastic connection component is a spring telescopic rod.

[0016] As one of the technical solutions of the present invention, the switching mechanism includes a linkage frame for pushing the linkage gear and the T-block, and a drive component for driving the linkage frame to move along the side surface of the vertical fault detection body.

[0017] As one technical solution of the present invention, the linkage frame includes vertically distributed straight rods and horizontally distributed L-shaped rods; the top of the straight rod is fixedly connected to a linkage block connected to the drive assembly; a groove is provided on the side of the rotating rod near the movable block; a stop block corresponding to the position of the groove is provided on the side of the linkage block; the bottom of the straight rod near the fault detection body is rotatably connected to the linkage gear through a rotating shaft; the thickness of the gear part is less than the thickness of the linkage gear and the rack part; one end of the L-shaped rod is fixedly connected to the side of the straight rod away from the fault detection body; a slot is provided on the side of the connecting plate away from the fault detection body; the other end of the L-shaped rod is provided with a stop block corresponding to the position of the slot and a pressure block corresponding to the position of the T-shaped block.

[0018] As one of the technical solutions of the present invention, the driving component includes a rotating rod with external threads on its sidewall, a linkage block with a threaded hole connected to the external threads, a positioning block fixedly provided on the top of the fault detection body, the positioning block having a limit hole, one end of the rotating rod being rotatably connected to the limit hole, and the other end of the rotating rod being provided with a knob.

[0019] As a preferred embodiment of the present invention, two driving mechanisms and two switching mechanisms are provided, and both are symmetrically distributed on both sides of the fault detection body.

[0020] As one of the technical solutions of the present invention, the number of the movable wheels is provided, and they are respectively arranged at the bottom of the fault detection body.

[0021] As one of the technical solutions of the present invention, the fault detection body is internally equipped with a data acquisition module, a data processing module, a fault judgment module and an aging analysis module. The data acquisition module is used to collect voltage data and ambient temperature data of various electrical components in the charging pile. The data processing module is used to process the collected voltage data and ambient temperature data. The fault judgment module is used to judge voltage abnormalities and ambient temperature abnormalities. The aging analysis module is used to analyze the aging degree of electrical components.

[0022] Secondly, the present invention also provides a method for detecting charging pile faults, which uses the above-mentioned charging pile fault detection device to complete the detection, including the following steps:

[0023] Step 1: Connect the socket of the charging pile fault detection device to the connection wires of each electrical component in the normal charging pile, and collect the ambient temperature data through the data acquisition module.

[0024] Step 2: Collect voltage data of various electrical components in a normal charging pile under different external temperatures, and calculate the relationship between voltage and external temperature through the data processing module;

[0025] Step 3: Separate the normal charging pile from the charging pile fault detection device, and then connect the charging pile fault detection device to the charging pile to be tested, so as to obtain the voltage data of each electrical component in the charging pile to be tested. At the same time, according to the relationship between voltage and external temperature, the obtained voltage data is converted into voltage data at normal temperature. The fault judgment module compares the converted voltage data at normal temperature with the voltage data of the normal charging pile to determine whether a fault has occurred.

[0026] Step 4: Collect voltage data of a certain electrical component in the charging pile under test through the aging analysis module over a period of time, calculate the voltage fluctuation coefficient, and determine the degree of aging of the electrical component through the voltage fluctuation coefficient.

[0027] As one of the technical solutions of this invention, in step two, the calculation method for calculating the relationship between voltage and external temperature through the data processing module is as follows: the voltage of each electrical component of a normal charging pile is collected at various temperatures; different electrical components will receive different values. Group of observation data Then the linear regression equation for the voltage and temperature of a certain electrical component is: ,in , , It is the average voltage. It is the average temperature, and so on, to calculate the linear regression equation for other electrical components.

[0028] As one of the technical solutions of this invention, in step three, the method for converting the obtained voltage data into voltage data under normal temperature based on the relationship between voltage and ambient temperature is as follows: The voltage and temperature of a certain electrical component of the charging pile to be tested are collected, wherein the voltage is denoted as... Temperature is recorded as Normal temperature is recorded as Convert the voltage of this electrical component to normal temperature. The comparison voltage is , among them and To obtain the linear regression equation from step two, and To make a comparison, when Exceeding If the error rate is within ±5%, a fault is determined, and then other electrical components are tested in sequence.

[0029] As one of the technical solutions of this invention, in step four, the method for calculating the voltage fluctuation coefficient is as follows: calculating the voltage data of a certain electrical component over a period of time. mean Then calculate the voltage fluctuation coefficient. :

[0030] ,

[0031] according to The numerical value is used to determine the degree of aging of the electrical component.

[0032] Compared with the prior art, the present invention provides a charging pile fault detection device and detection method, which has the following beneficial effects:

[0033] The charging pile fault detection device of the present invention overcomes the limitations of fixed-site detection by adopting a mobile design, providing technical support for the efficient operation and maintenance of charging infrastructure. Because it includes a baffle assembly and a support mechanism, the baffle assembly and support mechanism can be moved by a drive mechanism. By flipping the baffle assembly to the front end of the fault detection body to cover the operation panel and socket, and by lowering the support mechanism to support the fault detection body, it achieves the effects of protecting the operation panel and socket and providing stable support. Furthermore, a switching mechanism can be used to switch the connection between the baffle assembly, support mechanism, and drive mechanism to adapt to the switching between detection and transportation states, making it highly convenient to operate.

[0034] Furthermore, the charging pile fault detection method provided by this invention integrates a data acquisition module, a data processing module, a fault judgment module, and an aging analysis module within the fault detection body. This allows for real-time detection, analysis, and judgment of the aging degree of a certain electrical component of the charging pile, as well as abnormal voltage and temperature faults. This greatly improves the detection efficiency of the charging pile and is unaffected by the external environment. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural diagram of the present invention from a first perspective;

[0037] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0038] Figure 3 This is a three-dimensional structural diagram of the present invention from a second perspective;

[0039] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0040] Figure 5 This is a structural schematic diagram of the linkage frame;

[0041] Figure 6 This is a schematic diagram showing the connection between the connecting plate and the movable block;

[0042] Figure 7 This is a schematic diagram of the assembly of the protective components and the protective plate;

[0043] Figure 8This is a flowchart of the detection process of the present invention;

[0044] Figure 9 for Figure 3 Enlarged diagram of point C in the middle.

[0045] Reference numerals: 1. Fault detection body; 11. Operation panel; 12. Socket; 13. Guide sleeve; 14. Fixing plate; 15. Positioning block; 2. Baffle assembly; 21. Protective plate; 211. Assembly slot; 212. Guide hole; 22. Rotating rod; 221. Gear part; 222. Baffle groove; 23. Mounting shaft; 24. Linkage gear; 25. Protective assembly; 251. Protective cover; 252. Pressure plate; 253. Elastic connection assembly; 254. Push rod; 3. Support mechanism; 31. Support plate; 32. Connecting plate; 321. T-hole; 322. Clip 33. Groove; 4. Guide rod; 5. Drive mechanism; 6. Movable block; 7. Rack and pinion; 8. Extrusion groove; 9. Linear actuator; 10. Elastic reset mechanism; 11. Reset rod; 12. Mounting sleeve; 13. Reset spring; 14. T-block; 15. Switching mechanism; 16. Linkage frame; 17. Straight rod; 18. L-shaped rod; 19. Linkage block; 20. Stop block; 21. Locking block; 32. Pressure block; 43. Threaded hole; 54. Drive assembly; 55. Rotating rod; 66. External thread; 77. Knob; 8. Moving wheel. Detailed Implementation

[0046] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] The present invention will now be described in further detail through detailed embodiments and in conjunction with the accompanying drawings.

[0051] Please refer to Figures 1-9 This embodiment provides a charging pile fault detection device, including a fault detection body 1 with movable wheels 6, which is generally cuboid in shape. The front end of the fault detection body 1 is provided with an operation panel 11 and several sockets 12. When in use, the connection wires of the electrical components inside the charging pile can be connected to the sockets 12, and the collection of data such as voltage and temperature can be started through the operation panel 11, so as to process and analyze the data to determine whether there is a fault in the charging pile and to assess the degree of aging.

[0052] The fault detection body 1 has a baffle assembly 2 at its top for protecting the operation panel 11 and the socket 12, a support mechanism 3 at its bottom for supporting the fault detection body 1, a drive mechanism 4 on its side for moving the baffle assembly 2 and the support mechanism 3, and a switching mechanism 5 at its top for switching the connection between the baffle assembly 2, the support mechanism 3, and the drive mechanism 4. Because of the baffle assembly 2 and the support mechanism 3, the drive mechanism 4 can move the baffle assembly 2 and the support mechanism 3, thus providing protection for the operation panel 11 and the socket 12 and stable support. Furthermore, the switching mechanism 5 can be used to switch the connection between the baffle assembly 2, the support mechanism 3, and the drive mechanism 4 to adapt to switching between detection and handling states. When testing is required, the baffle assembly 2 is moved to the top of the fault detection body 1 using the drive mechanism 4, exposing the operation panel 11 and the socket 12. After testing, the baffle assembly 2 can be moved to the front of the fault detection body 1 using the drive mechanism 4, thereby covering and protecting the operation panel 11 and the socket 12. When the position needs to be moved, the support mechanism 3 can be raised using the drive mechanism 4, which facilitates quick transport via the moving wheels 6 at the bottom of the fault detection body 1. During vehicle placement and transportation or testing, it is necessary to keep the position fixed. The support mechanism 3 can be lowered using the drive mechanism 4 to support the fault detection body 1, thereby achieving stable and fixed position and preventing shaking and displacement.

[0053] In this embodiment, as Figures 1-4 , Figure 6 and Figure 9 As shown, the drive mechanism 4 includes a vertically distributed movable block 41 and a linear actuator 42 for driving the movable block 41 to move vertically. Specifically, the linear actuator 42 is fixedly mounted on the side of the fault detection body 1. One side of the movable block 41 has a rack portion 411, and the other side of the movable block 41 has a pressing groove 412. The pressing groove 412 is connected to a T-shaped block 44 via an elastic reset mechanism 43. The elastic reset mechanism 43 includes a reset rod 431, a mounting sleeve 432 sleeved on the reset rod 431, and a reset spring 433. The reset rod 431 is perpendicular to the side surface of the fault detection body 1. The mounting sleeve 432 is fixedly connected to the T-shaped block 44, and the two ends of the reset spring 433 are fixedly connected to the mounting sleeve 432 and the inner wall of the pressing groove 412, respectively. See also, as an example. Figure 9The extrusion groove 412 does not extend through the thickness of the movable block 41. The extrusion groove 412 has a rectangular shape with two adjacent open sides. The inner wall of the extrusion groove 412 includes four inner walls, two of which are distributed along both ends of the movable block 41, one inner wall is located near the rack portion 411, and the remaining inner wall is located near the fault detection body 1. During installation, the end of the return spring 433 away from the mounting sleeve 432 can be fixedly connected to the inner wall of the extrusion groove 412 near the fault detection body 1. Thus, the linear actuator 42 can be used to drive the movable block 41 to move up and down, thereby enabling the rack portion 411 on the movable block 41 to drive the baffle assembly 2 to rotate or the T-shaped block 44 on the movable block 41 to drive the support mechanism 3 to move up and down.

[0054] As an example, in some specific implementations, the linear actuator 42 may be an electrically operated telescopic rod.

[0055] In this embodiment, as Figures 1-3 and Figure 6 As shown, the support mechanism 3 includes a support plate 31 and a connecting plate 32 that is vertically and fixedly connected to the support plate. The upper part of the connecting plate 32, near the movable block 41, is provided with a T-shaped hole 321 that is slidably connected to the T-shaped block 44. Thus, by embedding the T-shaped block 44 on the movable block 41 into the T-shaped hole 321 on the connecting plate 32, the support plate 31 and the movable block 41 are connected, allowing the support plate 31 to be driven to move up and down by the linear actuator 42. When the T-shaped block 44 is pushed out of the T-shaped hole 321 using the switching mechanism 5, the connection between the connecting plate 32 and the movable block 41 is disconnected. After the thrust of the switching mechanism 5 is removed, the T-shaped block 44 can be restored to its original position using the elastic reset mechanism 43, allowing the connecting plate 32 to be reconnected to the movable block 41. Specifically, the linear actuator 42 drives the support plate 31 to move downward, so that the support plate 31 can contact the placement position and raise the fault detection body 1 together with the moving wheel 6 at the bottom, thereby achieving the purpose of stable placement; the linear actuator 42 drives the support plate 31 to move upward, so that the support plate 31 can be raised and the fault detection body 1 can be lowered, thereby facilitating pushing and transportation.

[0056] refer to Figure 1 and Figure 3To ensure smoother movement of the support plate 31 during lifting and lowering, as an improved implementation, the support plate 31 is provided with at least one vertically distributed guide rod 33, and a guide sleeve 13 correspondingly provided on the side of the fault detection body 1 to slide in cooperation with the guide rod 33. For example, the support plate 31 is square, with two guide rods 33 on each side. This allows them to cooperate with the guide sleeves 13 distributed on both sides of the fault detection body 1, thereby improving the smoothness and stability of the support plate 31 during lifting and lowering, reducing jamming and preventing deviation.

[0057] In some specific embodiments, to improve support stability, a wear-resistant anti-slip pad is further provided on the bottom of the support plate 31. As an example, the anti-slip pad can be a soft silicone pad.

[0058] In this embodiment, as Figures 1-4 and Figure 7 As shown, the baffle assembly 2 includes a protective plate 21 and a rotating rod 22 vertically fixedly connected to the protective plate. A gear portion 221 is fixedly provided at the end of the rotating rod 22 away from the protective plate. The gear portion 221 is rotatably connected to the side of the fault detection body 1 via a mounting shaft 23. A linkage gear 24 meshes between the gear portion 221 and the rack portion 411. Thus, when the linear actuator 42 drives the movable block 41 to move up and down, the protective plate 21 can be driven to flip and move through gear transmission, thereby flipping the protective plate 21 from the top of the fault detection body 1 to the front end of the fault detection body 1, or flipping the protective plate 21 from the front end of the fault detection body 1 in the opposite direction to the top of the fault detection body 1. As an example, the protective plate 21 is square, which matches the front side of the fault detection body 1, thus effectively covering the protective operating panel 11 and the socket 12. Since the fault detection body 1 is roughly cuboid in shape, in order to avoid interference and allow the protective plate 21 to more smoothly rotate around the edge of the fault detection body 1, the rotating rod 22 can be set to an appropriate length. For example, the length of the rotating rod 22 can be set to be slightly greater than the distance from the edge of the fault detection body 1 that the protective plate 21 needs to rotate to the mounting shaft 23. In this way, the requirement that the protective plate 21 can rotate is met, and the distance between the protective plate 21 and the operation panel 11 and the socket 12 is avoided when the protective plate 21 is rotated to the vertical position.

[0059] refer to Figure 1 and Figure 7When the protective plate 21 is flipped to the vertical position, there will be a small distance between the protective plate 21 and the operation panel 11 and the socket 12. In order to better protect the operation panel 11 and the socket 12, as an improved implementation, the protective plate 21 is equipped with a protective component 25 that can cover the operation panel 11 and the socket 12. Specifically, the protective component 25 includes a protective cover 251 and a pressure plate 252. The protective plate 21 has an assembly groove 211 for movably installing the protective cover 251 on the side near the fault detection body 1. At least one elastic connecting component 253 is connected between the inner wall of the assembly groove 211 and the protective cover 251. A guide hole 212 is provided on one side of the assembly groove 211 and is slidably connected to the pressure plate 252. One end of the pressure plate 252 extends out of the guide hole 212, and at least one push rod 254 is rotatably connected to the other end of the pressure plate 252. The end of the push rod 254 away from the pressure plate 252 is rotatably connected to the protective cover 251. A fixing plate 14 for pushing the pressure plate 252 is provided at the front end of the fault detection body 1. Thus, when the protective plate 21 is flipped to a vertical position, the pressure plate 252 comes into contact with the fixing plate 14, and the fixing plate 14 begins to squeeze and push the pressure plate 252 to slide, thereby causing the push rod 254 to rotate and drive the protective cover 251 to separate from the protective plate 21; when the protective plate 21 is vertical, the protective cover 251 is pushed out from the assembly slot 211 and covers the operation panel 11 and the socket 12, achieving a better protective effect.

[0060] As an example, the elastic connecting component 253 is a spring telescopic rod. Preferably, the protective cover 251 and the mounting groove 211 have a square outline; there are four elastic connecting components 253, which are distributed at the four corners of the mounting groove 211, and there are multiple push rods 254, so that the protective cover can be subjected to more balanced force.

[0061] In this embodiment, as Figures 1-5 As shown, the switching mechanism 5 includes a linkage frame 51 for pushing the linkage gear 24 and the T-block 44, and a drive assembly 52 for driving the linkage frame 51 to move along the side surface of the vertical fault detection body 1. In this way, the drive assembly 52 can drive the linkage frame 51 to translate toward or away from the side of the fault detection body 1, thereby completing the connection between the switching baffle assembly 2, the support mechanism 3 and the drive mechanism 4.

[0062] For details, please refer to Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 9The linkage frame 51 includes a vertically distributed straight rod 511 and a horizontally distributed L-shaped rod 512. The top of the straight rod 511 is fixedly connected to a linkage block 513 connected to the drive assembly 52. ​​The rotating rod 22 has a stop groove 222 on the side near the movable block 41. The side of the linkage block 513 is provided with a stop block 514 corresponding to the position of the stop groove 222. The bottom of the straight rod 511 near the fault detection body 1 is rotatably connected to the linkage gear 24 through a rotating shaft. The thickness of the gear part 221 is less than the thickness of the linkage gear 24 and the rack part 411. One end of the L-shaped rod 512 is fixedly connected to the side of the straight rod 511 away from the fault detection body 1. The side of the connecting plate 32 away from the fault detection body 1 has a slot 322. The other end of the L-shaped rod 512 is provided with a locking block 515 corresponding to the position of the slot 322 and a pressing block 516 corresponding to the position of the T-shaped block 44. The slot 322 is a through hole extending through both sides of the connecting plate 32 in the thickness direction. The protrusion height of the locking block 515 and the protrusion height of the pressing block 516 are equal to the thickness of the connecting plate 32, and the thickness of the connecting plate 32 is equal to the thickness of the T-shaped block 44. Thus, driven by the drive assembly 52, the linkage frame 51 can move towards or away from the side of the fault detection body 1. When the linkage frame 51 moves toward the side of the fault detection body 1, the pressure block 516 moves the T-shaped block 44 out of the T-shaped hole 321. At this time, starting the linear drive 42 will cause the protective plate 21 to flip to the front end of the fault detection body 1 to protect the operation panel 11 and the socket 12. However, since the movable block 41 is disconnected from the connecting plate 32, and the locking block 515 is embedded in the locking slot 322 to connect the connecting plate 32 with the linkage block 513, the support plate 31 is kept in a high position and will not move downward, thus facilitating transportation. When the linkage frame 51 moves away from the side wall of the fault detection body 1, the connecting plate 32 is kept connected to the movable block 41 by the T-shaped block 44. Starting the linear drive 42 can drive the support plate 31 to move downward for support, which is convenient for stable placement and testing after transportation. As the linkage gear 24 is separated from the gear part 221 and the power connection is disconnected, starting the linear drive 42 will not cause the protective plate 21 to flip or move. In addition, it should be noted that the dimensions and sizes of each component can be designed according to the overall size of the fault detection body 1, such as the length of the rotating rod 22, the length of the movable block 41, the vertical length of the T-block 44, the number of teeth of the rack part 411, the number of teeth of the linkage gear 24, and the number of teeth of the gear part 221. This can prevent interference between the T-block 44 and the pressure block 516 when the movable block 41 moves up and down because the movable block 41 and the connecting plate 32 are in a disconnected state.

[0063] As an example, such as Figures 2-5As shown, the drive assembly 52 includes a rotating rod 521 with external threads 522 on its sidewall, a linkage block 513 with a threaded hole 517 connected to the external threads 522, and a positioning block 15 fixedly mounted on the top of the fault detection body 1. The positioning block 15 has a limit hole. One end of the rotating rod 521 is rotatably connected to the limit hole, and the other end of the rotating rod 521 is provided with a knob 523. Since the linkage gear 24 is located between the gear part 221 and the rack part 411, the gear part 221 and the rack part 411 can limit the range of motion of the linkage frame 51 and prevent rotation. By turning the knob 523, the rotating rod 521 can be rotated, thereby driving the linkage block 513 to move the linkage frame 51 towards or away from the fault detection body 1, thereby realizing the connection between the switching baffle assembly 2, the support mechanism 3 and the drive mechanism 4, which has convenient operation.

[0064] refer to Figure 1 and Figure 3 In one specific embodiment, multiple movable wheels 6 are provided, each disposed at the bottom of the fault detection body 1. Specifically, as an example, four movable wheels 6 are provided, each fixedly installed at one of the four corners of the bottom of the fault detection body 1.

[0065] As a preferred embodiment, such as Figures 1-4 As shown, there are two drive mechanisms 4 and two switching mechanisms 5, both symmetrically distributed on the left and right sides of the fault detection body 1. This balanced force ensures smoother rotation of the protective plate 21 and more stable lifting of the support plate 31. More specifically, for ease of operation, the rotating rods 521 on both sides can be replaced with a single rod body. This simply requires machining opposite external threads 522 at both ends, allowing the knob 523 on either side to be turned simultaneously to drive both linkages 51 toward or away from the fault detection body 1, improving both operational convenience and force balance.

[0066] In one specific implementation, in order to improve the performance and functionality of the charging pile fault detection device, and further provide technical support for the efficient operation and maintenance of charging infrastructure, such as... Figure 8As shown, the fault detection unit 1 internally integrates a data acquisition module, a data processing module, a fault diagnosis module, and an aging analysis module. The data acquisition module collects voltage data and ambient temperature data from various electrical components within the charging pile. The data processing module processes the collected voltage and ambient temperature data. The fault diagnosis module identifies voltage and temperature anomalies. The aging analysis module analyzes the degree of aging of the electrical components. Thus, maintenance personnel can perform real-time detection, analysis, and diagnosis of the aging degree of a specific electrical component in the charging pile, as well as voltage and temperature anomalies, using only a single device. This significantly improves the efficiency of charging pile detection and is unaffected by external environmental factors.

[0067] Specifically, as an example, the data acquisition module uses the JX-ZC series acquisition module, the data processing module uses the JX-DBOX processing module, the fault diagnosis module uses the JX-AI900 diagnosis module, and the aging analysis module uses the JX-BURN analysis module.

[0068] The data acquisition module features the following functionalities: ① Applicable to a wide voltage range of 200-1000V DC; ② Compatible with the GB / T27930-2023 charging communication protocol; ③ Applicable to temperature sampling of both liquid-cooled and ordinary charging guns; ④ Support for pulse charging information acquisition via multi-source sensors; ⑤ CAN isolation design. The data acquisition module is implemented by collecting temperature, voltage, and current information from various sensors, then reading charging information via the charging protocol to obtain the required charging voltage and current, and finally uploading this information to the data processing module via isolated CAN communication to prevent signal interference.

[0069] The data processing module features: ① Support for the GB / T27930-2023 charging communication protocol; ② High computing power with a 100ms response time. The data processing module is implemented as follows: information collected by the data acquisition module is processed by the data processing module, which then sends instructions to the aging analysis module and the fault diagnosis module, generating information for display on the panel.

[0070] The fault diagnosis module features: ① Supports diagnosis of a wide variety of fault information, such as insulation abnormalities, temperature abnormalities, and contactor adhesion; ② Supports upgrading the fault information diagnosis library; ③ Accurately identifies fault points, down to specific major module categories. The fault diagnosis module is implemented using an edge inference architecture. It extracts data features, such as contactor adhesion, through a data processing module, performs fault information inference, processes current waveforms, diagnoses the fault, and uploads the fault information.

[0071] The aging analysis module has the following functional characteristics: ① It can make specific judgments and estimate the lifespan based on the number of times a component operates and its operating time; ② It performs analysis based on the specific input MTBF time. The aging analysis module is implemented by collecting data on the number of times a component operates, the temperature environment, and the component's lifespan through the data acquisition module; calculating the mean time between failures (MTBF); and predicting the remaining lifespan based on the currently collected information.

[0072] refer to Figures 1-7 and Figure 9 The instructions for the protection and support adjustment of the charging pile fault detection device are as follows:

[0073] During use, connect the connecting wires of each electrical component in the charging pile to the socket 12. The fault is detected by the data acquisition module, data processing module, fault judgment module and aging analysis module in the fault detection body 1. After the detection is completed, when placing it on the vehicle, disconnect the connecting wires. At this time, the fault detection body 1 needs to be stable. Activating the two electric telescopic rods will cause the two movable blocks 41 to move downward. The two movable blocks 41 drive the two connecting plates 32 to move downward through the two T-shaped blocks 44, thereby causing the support plate 31 to move downward, so that the support plate 31 can contact the placement position and cause the multiple moving wheels 6 to leave the vehicle body, thus stabilizing the placement.

[0074] Simultaneously, the two movable blocks 41 are driven to move and correspondingly drive the two linkage gears 24 to rotate. The two linkage gears 24 correspondingly drive the two gear parts 221 to rotate, thereby causing the two rotating rods 22 to rotate, which in turn drives the protective plate 21 to rotate. When the protective plate 21 is about to flip to the vertical position, the pressure plate 252 contacts the fixed plate 14. The fixed plate 14 squeezes and pushes the pressure plate 252 to slide, thereby causing the push rod 254 to rotate and drive the protective cover 251 to separate from the protective plate 21. When the protective plate 21 is vertical, the protective cover 251 is pushed out from the assembly slot 211 and covers the operation panel 11 and the socket 12, which facilitates better protection for the operation panel 11 and the socket 12.

[0075] When in use, if it is necessary to move it, the control panel 11 and the socket 12 need to be covered, but the support plate 31 is not required for support. At this time, turning the knob 523 clockwise will make the rotating rod 521 rotate. The rotating rod 521 drives the two linkage blocks 513 to move closer to each other through the external threads 522 at both ends, thereby making the two linkage frames 51 and the two linkage gears 24 move closer to each other. The two linkage frames 51 moving closer to each other will drive the two L-shaped rods 512, the two locking blocks 515 and the two pressing blocks 516 to move closer to each other. The two pressing blocks 516 will cause the two T-shaped blocks 44 to move out of the corresponding T-shaped holes 321 and cause the return spring 433 to deform. At this time, activating the two electric telescopic rods will cause the two movable blocks 41 to move. Since the two T-shaped blocks 44 move out of the corresponding T-shaped holes 321 respectively, and the two locking blocks 515 have moved and are correspondingly embedded in the locking slots 322, limiting the two connecting plates 32, they will not move. The movement of the two movable blocks 41 can cause the two linkage gears 24 to rotate, thereby causing the two gear parts 221 to rotate, which in turn causes the protective plate 21 to flip to a vertical position and the protective cover 251 to cover the operation panel 11 and the socket 12.

[0076] After being moved to the designated location, if testing and stable placement are required, the electric telescopic rod is activated to retract its output end, and the protective plate 21 and protective cover 251 return to their original state. Then, the same knob 523 is rotated counterclockwise to make the two linkage blocks 513 return to their original state and continue to move away. The two linkage frames 51, the two locking blocks 515, and the two pressing blocks 516 move away from each other. When the two pressing blocks 516 move away from each other, the two T-shaped blocks 44 return to their original state under the action of the reset spring 433 and are inserted into the corresponding T-shaped holes 321. At the same time, the two locking blocks 515 also move out of the corresponding slots 322. The two linkage frames 51 moving away from each other causes the two linkage gears 24 to move away from each other, so that the two linkage gears 24 are separated from the gear parts 221 on the two rotating rods 22. The stop block 514 on the linkage block 513 is embedded in the stop groove 222 on the rotating rod 22 and limits the rotation rod 22. Then, activating the electric telescopic rod will cause the movable block 41 to move the connecting plate 32 downward, so that the support plate 31 can contact the placement position and the multiple moving wheels 6 can leave the vehicle body, thus stabilizing the placement and facilitating subsequent testing.

[0077] In addition, such as Figure 8 As shown, a method for detecting charging pile faults is further provided, which uses the aforementioned charging pile fault detection device to complete the detection, including the following steps:

[0078] Step 1: Connect the socket of the charging pile fault detection device to the connection wires of each electrical component in the normal charging pile, and collect the ambient temperature data through the data acquisition module.

[0079] Step 2: Collect voltage data of various electrical components within the normal charging pile at different ambient temperatures. Calculate the relationship between voltage and ambient temperature using the data processing module. Specifically, collect the voltage data of each electrical component within the normal charging pile at various temperatures. Different electrical components will generate different voltage readings. Group of observation data Then the linear regression equation for the voltage and temperature of a certain electrical component is: ,in , , It is the average voltage. It is the average temperature, and so on, to calculate the linear regression equation for other electrical components;

[0080] Step 3: Separate the normal charging pile from the charging pile fault detection device, then connect the charging pile fault detection device to the charging pile to be tested. This will obtain the voltage data of each electrical component within the charging pile to be tested. Simultaneously, based on the relationship between voltage and ambient temperature, the obtained voltage data is converted to voltage data at normal temperature. The fault judgment module compares the converted voltage data at normal temperature with the voltage data of the normal charging pile to determine whether a fault has occurred. The specific conversion method for the voltage data to normal temperature is as follows: The voltage and temperature of a specific electrical component of the charging pile to be tested are collected, where the voltage is denoted as... Temperature is recorded as Normal temperature is recorded as Convert the voltage of this electrical component to normal temperature. The comparison voltage is , among them and To obtain the linear regression equation from step two, and To make a comparison, when Exceeding If the error rate is within ±5%, a fault is determined, and then other electrical components are tested in sequence.

[0081] Step 4: Collect voltage data of a certain electrical component in the charging pile under test through the aging analysis module over a period of time, calculate the voltage fluctuation coefficient, and determine the degree of aging of the electrical component through the voltage fluctuation coefficient.

[0082] Specifically, the voltage fluctuation coefficient is calculated as follows: calculate the voltage data of a certain electrical component over a period of time. mean Then calculate the voltage fluctuation coefficient. :

[0083] ,

[0084] according to The numerical value is used to determine the degree of aging of the electrical component. Among these, different electrical components... Different ranges, for example, when At that time, the degree of aging of electrical appliances was relatively low; when At that time, the degree of aging was moderate; when At that time, the degree of aging was relatively high.

[0085] Using the above method, the aging degree of a certain electrical component of the charging pile, as well as abnormal voltage and temperature faults, can be detected, analyzed, and judged in real time, which greatly improves the detection efficiency of the charging pile and is not affected by the external environment.

[0086] The above embodiments are merely illustrative of the concept and technical solution of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

[0087] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A charging pile fault detection device, comprising a fault detection body equipped with wheels, characterized in that, The front end of the fault detection body is provided with an operation panel and several sockets. The top of the fault detection body is provided with a baffle assembly for protecting the operation panel and sockets. The bottom of the fault detection body is provided with a support mechanism for supporting the fault detection body. The side of the fault detection body is provided with a drive mechanism for driving the baffle assembly and the support mechanism to move. The top of the fault detection body is provided with a switching mechanism for switching the connection between the baffle assembly, the support mechanism and the drive mechanism.

2. The charging pile fault detection device according to claim 1, characterized in that, The driving mechanism includes vertically distributed movable blocks and a linear actuator for driving the movable blocks to move in the vertical direction. The linear actuator is fixedly installed on the side of the fault detection body. One side of the movable block is provided with a rack portion, and the other side of the movable block is provided with a pressing groove. The pressing groove is connected to a T-shaped block through an elastic reset mechanism.

3. The charging pile fault detection device according to claim 2, characterized in that, The elastic reset mechanism includes a reset rod, a mounting sleeve fitted on the reset rod, and a reset spring. The reset rod is perpendicular to the side surface of the fault detection body. The mounting sleeve is fixedly connected to the T-shaped block. The two ends of the reset spring are fixedly connected to the mounting sleeve and the inner wall of the extrusion groove, respectively.

4. The charging pile fault detection device according to claim 2, characterized in that, The support mechanism includes a support plate and a connecting plate that is vertically fixed to the support plate. The upper part of the connecting plate near the movable block is provided with a T-shaped hole that is slidably connected to the T-shaped block. The support plate is provided with at least one vertically distributed guide rod, and the side of the fault detection body is provided with a guide sleeve that is slidably engaged with the guide rod.

5. The charging pile fault detection device according to claim 4, characterized in that, The baffle assembly includes a protective plate and a rotating rod that is vertically and fixedly connected to the protective plate. A gear is fixedly provided at the end of the rotating rod away from the protective plate. The gear is rotatably connected to the side of the fault detection body through a mounting shaft. A linkage gear meshes between the gear and the rack.

6. The charging pile fault detection device according to claim 5, characterized in that, The protective plate is equipped with a protective component, which includes a protective cover and a pressure plate. The protective plate has an assembly groove for movably installing the protective cover on the side near the fault detection body. At least one elastic connecting component is connected between the inner wall of the assembly groove and the protective cover. A guide hole is provided on one side of the assembly groove, which is slidably connected to the pressure plate. One end of the pressure plate extends out of the guide hole, and at least one push rod is rotatably connected to the other end of the pressure plate. The end of the push rod away from the pressure plate is rotatably connected to the protective cover. A fixing plate for pushing the pressure plate is provided at the front end of the fault detection body.

7. The charging pile fault detection device according to claim 6, characterized in that, The elastic connection component is a spring telescopic rod.

8. The charging pile fault detection device according to claim 5, characterized in that, The switching mechanism includes a linkage frame for pushing the linkage gear and the T-block, and a drive assembly for driving the linkage frame to move along the side surface of the vertical fault detection body.

9. The charging pile fault detection device according to claim 8, characterized in that, The linkage frame includes vertically distributed straight rods and horizontally distributed L-shaped rods. A linkage block connected to the drive assembly is fixedly connected to the top of the straight rod. A retaining groove is provided on the side of the rotating rod near the movable block. A stop block corresponding to the retaining groove is provided on the side of the linkage block. The bottom of the straight rod near the fault detection body is rotatably connected to the linkage gear via a rotating shaft. The thickness of the gear portion is less than the thickness of the linkage gear and the rack portion. One end of the L-shaped rod is fixedly connected to the side of the straight rod away from the fault detection body. A slot is provided on the side of the connecting plate away from the fault detection body. The other end of the L-shaped rod has a locking block corresponding to the slot and a pressing block corresponding to the T-shaped block. The drive assembly includes a rotating rod with external threads on its sidewall. The linkage block has a threaded hole connected to the external threads. A positioning block is fixedly provided on the top of the fault detection body. The positioning block has a limit hole. One end of the rotating rod is rotatably connected to the limit hole. The other end of the rotating rod has a knob.

10. The charging pile fault detection device according to any one of claims 1 to 9, characterized in that, The drive mechanism and the switching mechanism are each provided in twos, and both are symmetrically distributed on both sides of the fault detection body.

11. The charging pile fault detection device according to claim 1, characterized in that, The fault detection unit is internally equipped with a data acquisition module, a data processing module, a fault judgment module, and an aging analysis module. The data acquisition module is used to collect voltage data and ambient temperature data of various electrical components in the charging pile. The data processing module is used to process the collected voltage data and ambient temperature data. The fault judgment module is used to judge voltage abnormalities and ambient temperature abnormalities. The aging analysis module is used to analyze the aging degree of electrical components.

12. A method for detecting faults in charging piles, characterized in that, The charging pile fault detection device according to claim 11 is used to complete the detection, including the following steps: Step 1: Connect the socket of the charging pile fault detection device to the connection wires of each electrical component in the normal charging pile, and collect the ambient temperature data through the data acquisition module. Step 2: Collect voltage data of various electrical components in a normal charging pile under different external temperatures, and calculate the relationship between voltage and external temperature through the data processing module; Step 3: Separate the normal charging pile from the charging pile fault detection device, and then connect the charging pile fault detection device to the charging pile to be tested, so as to obtain the voltage data of each electrical component in the charging pile to be tested. At the same time, according to the relationship between voltage and external temperature, the obtained voltage data is converted into voltage data at normal temperature. The fault judgment module compares the converted voltage data at normal temperature with the voltage data of the normal charging pile to determine whether a fault has occurred. Step 4: Collect voltage data of a certain electrical component in the charging pile under test through the aging analysis module over a period of time, calculate the voltage fluctuation coefficient, and determine the degree of aging of the electrical component through the voltage fluctuation coefficient.

13. The charging pile fault detection method according to claim 12, characterized in that, In step two, the calculation method for determining the relationship between voltage and ambient temperature using the data processing module is as follows: The voltage of each electrical component of a normal charging pile is collected at various temperatures; different electrical components will receive different voltage readings. Group of observation data Then the linear regression equation for the voltage and temperature of a certain electrical component is: ,in , , It is the average voltage. It is the average temperature, and so on, to calculate the linear regression equation for other electrical components; In step three, the method for converting the obtained voltage data into voltage data under normal temperature based on the relationship between voltage and ambient temperature is as follows: The voltage and temperature of a certain electrical component of the charging pile to be tested are collected, where the voltage is denoted as... Temperature is recorded as Normal temperature is recorded as The voltage of this electrical component converted to normal temperature is: The comparison voltage is , among them and To obtain the linear regression equation from step two, and To make a comparison, when Exceeding If the error rate is within ±5%, a fault is determined, and then other electrical components are tested in sequence. In step four, the voltage fluctuation coefficient is calculated by: calculating the voltage data of a certain electrical component over a period of time. mean Then calculate the voltage fluctuation coefficient. : ， according to The numerical value is used to determine the degree of aging of the electrical component.

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