Intelligent detection system for identifying aging of charging pile circuit and intelligent charging pile thereof

Abstract

The invention discloses an intelligent detection system for identifying aging of a charging pile circuit and an intelligent charging pile thereof. An intelligent detection system for identifying aging of a charging pile circuit comprises a power supply conversion module used for converting a high voltage into a power supply which can be used by a circuit aging detection and defect processing device; the current detection module is used for detecting the current change of the circuit in real time; a microcontroller module; and a Bluetooth transmitting module. The intelligent charging pile comprises the intelligent detection system. According to the intelligent detection system for identifying the circuit aging of the charging pile, the current change of the circuit in the charging pile can be monitored in real time, data are analyzed by using an intelligent algorithm, and the circuit aging condition is identified in time. According to the intelligent charging pile, flaws on the surface of the connecting line can be detected in the winding and unwinding process of the connecting line of the charging gun, then the flaws are temporarily and automatically processed, shutdown is not needed before formal manual maintenance, the labor cost and the time cost are reduced, and potential safety hazards of equipment are isolated.

Description

Technical Field

[0001] The present invention relates to a circuit aging detection system and an electric vehicle charging device thereof, and in particular to an intelligent detection system for identifying the aging of a charging pile circuit and an intelligent charging pile thereof. Background Art

[0002] Against the backdrop of the rapid development of the electric vehicle industry, the importance of charging piles as key infrastructure has become increasingly prominent. However, the existing charging pile system faces some severe technical challenges in long-term use. First of all, the working environment of charging piles is usually harsh. Most charging piles are installed outdoors and are exposed to various harsh climatic conditions for a long time, such as high temperature, low temperature, humidity, dust, etc. This harsh environment can easily lead to accelerated aging of the internal circuits of the charging piles, which not only reduces the charging efficiency, but also may cause safety hazards such as short circuits and overheating. At present, the detection of circuit aging mainly relies on regular manual inspections. This method is not only inefficient, but also difficult to detect potential problems in a timely manner, increasing maintenance costs and safety risks.

[0003] Secondly, the connecting wire between the charging gun and the charging pile faces the challenge of mechanical stress during use. During the charging process, the connecting wire needs to be frequently reeled and unreeled. This repeated mechanical movement can easily cause cracks or defects on the surface of the connecting wire, leading to insulation failure. Because the voltage of the charging pile is high, if the power is not cut off in time, it may cause great property and personal damage. The existing treatment method is to cut off the power in time after the problem is found, and entrust professionals to perform manual repairs to make up for these defects. However, this method has obvious limitations, such as slow response time, low efficiency, and unstable repair quality. This passive repair method not only increases labor costs and downtime, but may also cause the equipment to be in a potentially dangerous state for a long time. Summary of the invention

[0004] One of the purposes of the present invention is to provide an intelligent detection system for identifying the aging of charging pile circuits. This intelligent detection system for identifying the aging of charging pile circuits can monitor the current changes in the internal circuits of the charging piles in real time, and then use intelligent algorithms to analyze data to timely identify circuit aging.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: An intelligent detection system for identifying charging pile circuit aging, comprising: a power conversion module, used to convert high voltage into power that can be used for circuit aging detection and an external automatic processing device for charging gun connection line defects; the power conversion module includes: a power input processing module, used to perform preliminary processing on the input power; a power module, used to further convert the processed power into the power required by the system and the power of the external automatic processing device for charging gun connection line defects; a current detection module, used to detect circuit current changes in real time; a microcontroller module, used to control the operation of the overall system and analyze current change data; a Bluetooth transmission module, used to transmit the analysis results to an external processor in real time.

[0006] The present invention is further configured as follows: the power input processing module includes: a fuse, which melts when the current exceeds a preset value to achieve overcurrent protection; a thermistor, whose resistance decreases as the temperature increases when the power is turned on, and is used to limit the surge current when the power is turned on; a common mode inductor, which suppresses common mode noise through magnetic field coupling; an X capacitor, which filters out differential mode noise through the process of energy storage and release; and a diode, which converts alternating current into pulsating direct current through its unidirectional conductive characteristics.

[0007] The present invention is further configured as follows: the power module includes: an input filter capacitor for smoothing pulsating direct current; a rectifier diode for further rectifying the power supply; a starting resistor network for limiting current when the system starts; a high-frequency decoupling capacitor for filtering out high-frequency noise; a main control IC for dynamically adjusting the output voltage according to a feedback signal; an isolation transformer for achieving electrical isolation and voltage conversion through the principle of electromagnetic induction; a secondary-side rectifier diode for rectifying the secondary output of the transformer; an output filter capacitor for smoothing the rectified voltage; a voltage divider resistor for reducing the output voltage in proportion and providing it to the main control IC as a feedback signal; and a linear regulator for providing a stable 5V output through an internal voltage comparison and regulation circuit.

[0008] The present invention is further configured as follows: the current detection module includes: a Hall effect current sensor, which uses the Hall effect principle to measure current in a non-contact manner; protection and filtering elements, including input filter capacitors and diodes, which are used to protect the circuit and filter out interference signals; a signal conditioning circuit, including a sampling resistor, a voltage divider resistor, a filter capacitor and an output resistor, which is used to adjust the sensor output signal to a level range suitable for processing by a microcontroller.

[0009] The present invention is further configured as follows: the microcontroller module includes: a voltage regulation module for providing a stable power supply for the microcontroller; a processing module for performing data acquisition, analysis and control functions. The voltage regulation module includes: a low voltage drop linear regulator that dynamically converts a higher voltage into 3.3V through an internal feedback regulation circuit; an input capacitor and an output capacitor that filter and stabilize the voltage through the charging and discharging process. The processing module includes a microcontroller chip that controls the operation of the overall intelligent detection system by executing a preset program, including data acquisition, circuit aging judgment and communication control.

[0010] The present invention is further configured as follows: the Bluetooth transmitting module includes: a 3.3V linear regulator to provide a stable power supply for the Bluetooth module; a power filter capacitor to filter out power supply noise; a Bluetooth module to perform Bluetooth communication via radio waves; an antenna matching network to optimize the transmission efficiency of the radio frequency signal; and a signal interface resistor to match the signal level.

[0011] Another object of the present invention is to provide an intelligent charging pile using the above intelligent detection system. This intelligent charging pile can detect surface defects of the connecting wire during the process of winding and unwinding the connecting wire of the charging gun, and then automatically handle the defects temporarily without stopping the machine before formal manual maintenance, thus reducing labor costs and time costs, and isolating safety hazards of the equipment.

[0012] The above technical objectives of the present invention are achieved through the following technical solutions: A smart charging pile comprises: the smart detection system for identifying charging pile circuit aging as described above; and also comprises: a housing; a processing box disposed in the housing; a winding wheel for winding and unwinding a connecting wire; a charging gun connected to the connecting wire; a sensor for detecting surface defects of the connecting wire in real time during winding and unwinding of the connecting wire; and an automatic defect processing device disposed in the processing box for automatically processing the defect when a defect of the connecting wire is detected.

[0013] The present invention is further configured as follows: the automatic defect processing device includes: a support base; a fixed frame, which is arranged on the support base; a rotating frame, which is rotatably connected to the fixed frame; a driving gear, which meshes and drives the rotating frame to rotate; a driving wheel, which is arranged on the rotating frame and rotates therewith; a connecting plate, which is arranged on the rotating frame; a clamp, which is arranged on the connecting plate; a cylinder, which drives the clamp to open and close through air pressure; a fixed claw, which is arranged on the support base; a tape, which is used to temporarily repair surface defects of the connecting line; and a driving cutting device, which is used to convey and cut the tape.

[0014] The present invention is further configured as follows: the driving cutting device includes: a connecting frame; a positioning disk, which is arranged on the connecting frame and can rotate; a film roll, which is arranged on the positioning disk and rotates therewith; a supporting frame, which is arranged on the connecting frame; a guide roller, a driving roller and a guide roller, which are arranged on the supporting frame and can rotate for guiding and conveying the tape; a guide plate, which is arranged on the supporting frame; a lower cutter, which is fixedly arranged on the guide plate; a connecting block, which is slidably connected to the guide plate; an upper cutter, which is arranged on the connecting block and can cooperate with the lower cutter to cut the tape.

[0015] In summary, the present invention has the following beneficial effects: 1. The intelligent detection system for identifying the aging of the charging pile circuit can be distributed in the internal circuit of the charging pile. The current detection module detects the current change, compares it with the data stored in the microcontroller module, and transmits the corresponding data to the external main controller and mobile device through the Bluetooth transmitter module to remind the equipment of aging and the need for replacement. In addition, the downtime of the waiting process for maintenance caused by the failure of the external insulation of the charging pile is reduced, and the external voltage is output through the power conversion module to power the external automatic processing device for the charging gun connection line defect. Then, when the circuit aging is identified, the connection line defect can be automatically and temporarily processed to reduce the potential safety hazards caused by the charging pile; 2. When there is a defect in the connection line of the charging gun, the smart charging pile can temporarily and automatically handle the defect, without the user having to perform temporary repairs, reducing the safety hazards of non-professional users. In addition, there is no need to shut down before formal professional repairs, reducing labor costs and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A flow chart of an intelligent detection system for identifying aging of charging pile circuits; Figure 2 A circuit diagram of a power input processing module in a power conversion module; Figure 3 A circuit diagram of a power module in a power conversion module; Figure 4 is a circuit diagram of a current detection module; Figure 5 is the circuit diagram of the microcontroller module; Figure 6 This is the circuit diagram of the Bluetooth transmitter module; Figure 7 It is a structural schematic diagram of a smart charging pile; Figure 8 for Figure 7 The structural diagram after deleting part of the cabinet; Fig. 9 for Figure 8The schematic diagram of the structure after further deleting the side box and the processing box; Fig.10 It is a schematic diagram of the internal structure of the processing box; Fig.11 It is a schematic diagram of the connection relationship between the driving gear, the fixed frame and the rotating frame; Fig.12 for Fig.10 A side view schematic diagram of the structure; Fig.13 for Fig.12 The front view after deleting the support seat, clamping jaws, cylinder, and fixed jaw parts; Fig.14 for Fig.13 A magnified image of area A.

[0017] Figure numerals: 1. Box body; 2. Processing box; 3. Automatic defect processing device; 4. Winding wheel; 5. Connecting wire; 6. Charging gun; 7. Sensor; 8. Support seat; 9. Fixed frame; 10. Rotating frame; 11. Driving gear; 12. Driving wheel; 13. Notch; 14. Connecting plate; 15. Clamp; 16. Cylinder; 17. Fixed claw; 18. Tape; 19. Drive cutting device; 20. Connecting frame; 21. Positioning plate; 22. Film; 23. Support frame; 24. Guide roller; 25. Driving roller; 26. Guide roller; 27. Guide plate; 28. Through groove; 29. ​​Lower cutter; 30. Connecting block; 31. Upper cutter. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0020] In the description of the present invention, "multiple" means two or more than two, unless otherwise clearly defined. In the present invention, unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1 As shown, an intelligent detection system for identifying charging pile circuit aging includes a power conversion module for converting high voltage into a circuit aging detection device, an external automatic processing device for charging gun connection line defects, a current detection module for detecting circuit current changes, a microcontroller module for controlling the operation of the overall system, and a Bluetooth transmission module for transmitting information to an external processor.

[0023] 1. Power conversion module The power conversion module includes a power input processing module and a power module.

[0024] (1) Power input processing module like Figure 2 As shown, the power input processing module includes the following components: Power input (P1): L: live wire input; N: neutral wire input.

[0025] Fuse (F1): used for overcurrent protection to prevent further damage when a circuit malfunctions.

[0026] Thermistor (NTC1): Used to limit the inrush current when the power is turned on and protect the subsequent circuits. As the temperature rises, its resistance value decreases, reducing the impact on normal operation.

[0027] Common mode inductor (T1): Common mode choke, used to suppress common mode noise and improve electromagnetic compatibility (EMC) performance.

[0028] X capacitor (CX1): connected in parallel between the live wire and the neutral wire to filter out differential mode noise and improve EMC performance.

[0029] X capacitor (CX2): connected in parallel between the current output terminals to filter out differential mode noise and improve EMC performance.

[0030] Diode (D1): Converts AC into pulsating DC.

[0031] The working process of the above power input processing module is as follows: The power supply of the smart charging pile is AC. AC enters the circuit through L and N, passes through fuse F1 and thermistor NTC1, and the surge current generated in an instant is shared by at least one thermistor NTC1 with a high resistance value, reducing the damage of the surge current to the circuit components. The current is then filtered for the first time through X capacitor CX1, and then filtered for the second time through common mode inductor T1 and X capacitor CX1 to reduce electromagnetic interference. Finally, it is converted into pulsating DC through diode D1.

[0032] The above circuit realizes the conversion process from AC power input to multiple filtered DC output, providing a relatively stable and clean DC input for the subsequent power supply circuit.

[0033] (2) Power module like Figure 3 As shown, the power module includes the following components: C2 (10μF / 450V): input filter capacitor.

[0034] D2(A7): rectifier diode.

[0035] R2 (51R) and R1 (220K): startup resistor network.

[0036] C1 (102 / 500V): high frequency decoupling capacitor.

[0037] U2 (KP30362SGA): Main control IC, used for power distribution control.

[0038] T2: Isolation transformer, providing electrical isolation and voltage conversion.

[0039] D3(A7): Secondary side rectifier diode.

[0040] C3, C4 (330μF / 25V): output filter capacitors.

[0041] R6 (39K / 1%), R10 (1.7K / 1%): voltage divider resistors, providing feedback voltage.

[0042] U1 (78M05): Linear regulator, providing a stable 5V output.

[0043] C5, C6: Regulator input and output filter capacitors.

[0044] The working process of the above power module is as follows: After the current is processed by the power input processing module, it is filtered through C2, and the filtered current is high-frequency filtered through the high-frequency decoupling capacitor C1. After that, the current enters the transformer T2, converting the initial voltage into a low voltage of 12V. The low voltage provides power input for the automatic processing device for peripheral connection line defects. After passing through T2, the current enters the control chip U2 for voltage regulation, and then re-enters the transformer T2 output to output 6V AC voltage. The output voltage is fed back to U2 through the R6 and R10 voltage divider resistors to achieve the purpose of real-time monitoring. The transformer T2 outputs a 6V voltage that is rectified by the diode D3, filtered by the C3 and C4 capacitors, and then enters the voltage regulator U1 to adjust the voltage output to 5V, and then further filtered by capacitors C5 and C6 to obtain a stable 5V power supply voltage.

[0045] The 6V voltage output by the power module is further filtered and supplied to the precision current detection module and microcontroller module to prevent the input voltage from being unstable and causing voltage fluctuations in the current detection module and microcontroller module, thereby ensuring the stable operation of the current detection module and microcontroller module. In addition, after preliminary filtering and capacitor compatibility processing, the transformer outputs a 12V control voltage, which is supplied to the external automatic charging gun connection line defect processing device, thereby achieving the technical purpose of voltage regulation to external voltage and internal voltage.

[0046] 2. Current detection module like Figure 4 As shown, the current detection module is a detection part built into the charging pile circuit, mainly including: Current sensor (P1): Hall effect current sensor for contactless current measurement.

[0047] Protection and filtering components: C7 (102, i.e. 1nF): input filter capacitor; D5, D6 (A7): diodes for overvoltage protection.

[0048] Signal conditioning circuit: R8 (0R2): sampling resistor, used to convert current into voltage signal; R4, R9 (1K): voltage divider resistor; C8 (102, i.e. 1nF): filter capacitor; R7 (1K): output resistor.

[0049] Output terminal: Current_det: current detection output terminal.

[0050] The overall working process is as follows: The current to be measured passes through the LOUT and LIN terminals of the current sensor P1. The output signal is initially filtered by C7; D5 and D6 provide bidirectional overvoltage protection, and then the signal is converted into voltage by R8; R4 and R9 form a voltage divider network to adjust the signal level. C8 performs secondary filtering and finally outputs to the Current_det terminal through R7. The output level signal is received and processed by the microcontroller module.

[0051] The above-mentioned current detection module provides signal conditioning and protection functions, which can effectively convert current information into an easily processable voltage signal, while protecting the circuit from electrical interference and overvoltage conditions. In addition, multiple current detection modules can be set up and distributed in various circuits. When the circuit ages, the resistance value in the circuit usually rises, which in turn causes the output signal to weaken. Therefore, the level signal is output through the current detection module, and compared with the data stored in the microcontroller, and the microcontroller performs subsequent processing when an abnormality occurs.

[0052] 3. Microcontroller module like Figure 5 As shown, the microcontroller module includes a voltage regulating module and a processing module.

[0053] (1) Voltage regulation module The voltage regulator module mainly includes the following components: Low Dropout Linear Regulator: U3 (LM1117-3V3): Used to convert the higher voltage to 3.3V.

[0054] Input capacitors: C12 (104, i.e. 0.1µF) and C14 (10µF / 16V) are used to filter out high-frequency noise and transient interference from the input power supply.

[0055] Output capacitors: C10 (104, i.e. 0.1µF), C11 (100µF / 16V): used to stabilize the output voltage.

[0056] The overall working process is as follows: The 5V input voltage is first filtered by C12 and C14. The filtered voltage enters the Vin pin (pin 1) of the LM1117-3V3. The LM1117-3V3 internally drops the voltage to 3.3V. The 3.3V output is further filtered and stabilized by C10 and C11. The final 3.3V stabilized voltage is supplied from the output end to the processing module for use.

[0057] (2) Processing module The processing module includes a microcontroller chip: U6 (HC32F196JCTA). The microcontroller chip has multiple pins and can control the operation of the overall intelligent detection system. It outputs signals after signal input processing to provide feedback and control the circuit aging of the charging pile. It mainly uses the 3.3V voltage output by the voltage regulator module as power supply, converts the voltage signal in the current detection module and transmits it to U6 for processing, and finally outputs it through the Bluetooth transmitter module, and feeds back abnormal conditions to the external processor to provide early warning, so that subsequent staff can repair the fault location. Secondly, the multiple pins in U6 can also detect the temperature, timing, humidity and other information inside the charging pile and transmit it to the external processor. I will not go into details here.

[0058] 4. Bluetooth transmitter module like Figure 6 As shown, the Bluetooth transmitter module includes the following components: U4 (LM1117-3V3): 3.3V linear regulator, converts the 5V input of the power conversion module into 3.3V output.

[0059] Power supply filter capacitors: Input: C16 (104, 0.1µF), C17 (10µF / 16V); Output: C13 (104, 0.1µF), C15 (100µF / 16V).

[0060] U5 (ECB01S): Bluetooth module, responsible for Bluetooth communication function.

[0061] Antenna matching network: C19 (1.2pF), L15 (4.3nH): matching antenna impedance.

[0062] Signal interface resistors: R18, R19, R20, R21, R22, R23 (1K): used for protection and matching of signal lines.

[0063] Its main working process is as follows: 5V input power is converted to 3.3V through U4 to power the Bluetooth module. Filter capacitors C16, C17, C13, and C15 ensure a stable power supply. The 3.3V power supply powers the VCC pin of the Bluetooth module U5. The RF signal is connected to the antenna through a matching network. The UART signal (TX / RX) communicates with the main controller through a resistor network. Control signals (such as EN, DIS, ROLE) are connected to the main controller through resistors.

[0064] The above LM1117-3V3 provides a stable 3.3V power supply and reduces power supply noise through multi-stage filter capacitors to improve system stability. The antenna matching network of the Bluetooth module U5 optimizes RF performance and improves communication quality. Series resistors (R18-R23) are used to protect the Bluetooth module and the main controller from electrical shock. Signals such as EN (enable), DIS (disable), and ROLE (role selection) provide flexible control of the Bluetooth module. UART communication: Data exchange with the main controller is achieved through the UART interface (TX / RX).

[0065] The above-mentioned Bluetooth transmitter module provides stable power management, reliable signal interface and optimized RF performance. It can process the signal of the microcontroller U6 through the Bluetooth transmitter module, and then transmit it to the main controller and Bluetooth-compatible mobile equipment, so as to receive fault signals in real time and facilitate the staff to repair the charging pile.

[0066] In summary, the above-mentioned intelligent detection system for identifying the aging of the charging pile circuit can be distributed in the internal circuit of the charging pile, detect the current change through the current detection module, compare the data stored in the microcontroller module, and transmit the corresponding data to the external main controller and mobile device through the Bluetooth transmitter module, reminding the equipment to be aged and need to be replaced. In addition, the downtime of the waiting repair process caused by the failure of the external insulation of the charging pile is reduced, and the external voltage is output through the power conversion module to power the external automatic processing device for the charging gun connection line defect. Then, in the case of identifying the aging of the circuit, the connection line defect can also be automatically temporarily processed to reduce the potential safety hazards caused by the charging pile.

[0067] like Figure 7 , Figure 8 , Fig. 9 As shown, in order to automatically handle the problem of breakage and other defects in the connecting wire of the charging gun, the present application also provides an intelligent charging pile using the above-mentioned circuit aging intelligent detection system, including a box body 1. A processing box 2 is extended on one side of the box body 1. The processing box 2 is integrally arranged with the box body 1. An automatic defect processing device 3 is arranged in the processing box 2. A winding wheel 4 is also arranged in the box body 1. A connecting wire 5 is wound on the winding wheel 4. One end of the connecting wire 5 is connected to the power supply of the charging pile, and the other end is connected to the charging gun 6. Among them, the connecting wire 5 first passes through the processing box 2 and then is hung on the box body 1. A sensor 7 is arranged between the connecting wire 5 and the box body 1. The sensor 7 can be an optical image analysis sensor 7, or an infrared sensor 7, etc., which is used to determine whether there are defects on the surface of the connecting wire 5. It is a prior art and will not be repeated here.

[0068] like Fig.10 , Fig.11 , Fig.12As shown, the automatic defect processing device 3 includes a support seat 8 slidably connected to the box body 1 through a T-shaped block. The support seat 8 slides longitudinally on the box body 1. A circular fixing frame 9 is fixedly arranged on the support seat 8. Among them, a rotating frame 10 is rotatably connected inside the circular fixing frame 9. The shape of the rotating frame 10 matches the circular fixing frame 9.

[0069] A driving gear 11 is provided at one end of the rotating frame 10. A waist-shaped notch 13 corresponding to the connecting line 5 is provided in the middle of the circular fixed frame 9, the rotating frame 10 and the driving gear 11. The driving gear 11 is fixedly connected to the rotating frame 10 and is connected to the bearing of the fixed frame 9. When the driving gear 11 rotates, it can drive the rotating frame 10 to rotate. Two driving wheels 12 separated from the driving gear 11 are provided on the upper side of the driving gear 11. When the driving gear 11 moves upward, the two driving wheels 12 can eventually mesh with the driving gear 11 at the same time. The two driving wheels 12 are respectively connected to driving motors (located in the box body 1, not shown in the figure). The driving motor drives the driving wheel 12 to rotate, and drives the driving gear 11 to rotate when the driving gear 11 meshes with the driving wheel 12.

[0070] Among them, only one of the two driving motors works at the same time. The main purpose is that since there is a gap 13 in the middle of the driving gear 11, a single motor cannot drive the driving gear 11 to rotate stably, and two motors are needed to be equipped to run alternately to drive the driving gear 11 to rotate.

[0071] A connecting plate 14 is fixedly connected to one side of the support base 8. A clamping claw 15 is hinged on the top of the connecting plate 14. The clamping claw 15 is driven by a cylinder 16, and a fixed claw 17 is arranged above the clamping claw 15. When the cylinder 16 works, the clamping claw 15 is driven to move upward, and the fixed claw 17 does not move. Its structure is the existing clamping claw 15 hinged driving structure, which will not be repeated here.

[0072] It should be noted that the connecting wire 5 is located between the clamping claw 15 and the fixing claw 17 and can be clamped by the clamping claw 15 and the fixing claw 17 .

[0073] The other end of the cylinder 16 is fixedly connected to the processing box 2 for fixing and supporting the cylinder 16 .

[0074] As described above, when the clamping jaw 15 moves upward to clamp the connecting wire 5, the clamping jaw 15 drives the connecting plate 14 hinged to the clamping jaw 15 to move upward, thereby driving the supporting seat 8 to move upward. When the supporting seat 8 moves upward, it drives the fixing frame 9, the driving frame, and the driving gear 11 to move upward at the same time, so that the connecting wire 5 is fixedly clamped, and the driving wheel 12 is meshed with the driving gear 11. The driving motor works alone to rotate the rotating frame 10.

[0075] Optimally, an insulating tape 18 is provided between the upper side of the rotating frame 10 and the lower side of the connecting wire 5. The sticking side of the insulating tape 18 faces upward, that is, toward the side of the connecting wire 5. A driving cutting device 19 for unwinding and cutting the tape 18 is connected to one side of the insulating tape 18.

[0076] like Fig.13 , Fig.14 As shown, the driving cutting device 19 includes a connecting frame 20. A positioning plate 21 is provided at one end of the connecting frame 20, and a film 22 is provided on one side of the positioning plate 21 through a rotating shaft. The film 22 is inverted and extended to the insulating tape 18, and the sticking side of the insulating tape 18 faces upward. A support frame 23 is fixedly connected between one side of the positioning plate 21 and the box body 1.

[0077] The middle part of the connecting frame 20 is provided with a guide roller 24, a driving roller 25 and a guide roller 26 in sequence. Among them, the guide roller 26 is an anti-sticking roller shaft, which can be made of silicone rubber. The surfaces of the guide roller 24 and the driving roller 25 are made of rubber with a high friction coefficient. One end of the driving roller 25 is connected to a motor (not shown in the figure) for driving the driving roller 25 to rotate. As mentioned above, when the tape 18 extending from the film 22 passes over the guide roller 24, passes over the driving roller 25, and then passes under the guide roller 26 to be output, it is ensured that the tape 18 is in a tensioned state in the multi-roller structure.

[0078] Correspondingly, a guide plate 27 is fixedly connected to one side of the fixed frame 9. The tape 18 reaches the guide plate 27 after passing through the guide roller 26. The guide plate 27 guides the tape 18 to move above the fixed frame 9, and it can pass through the gap 13 or not. Under the above setting, when the support seat 8 drives the fixed frame 9 and the rotating frame 10 to move up so that the connecting line 5 enters the bottom of the gap 13, it just corresponds to the center of the fixed frame 9 and the rotating frame 10. In the process of the connecting line 5 entering the gap 13, it contacts the adhesive side of the tape 18, so that the tape 18 is attached to the connecting line 5. Afterwards, when the connecting line 5 reaches the bottom of the gap 13, the tape 18 is compacted so that the tape 18 and the connecting line 5 are fully contacted and attached. When the rotating frame 10 rotates, it can drive the tape 18 to rotate and wrap around the connecting line 5, so that the defects and gaps on the connecting line 5 are covered by the insulating tape 18, so as to achieve the purpose of automatically processing the defects of the connecting line 5, which is used for temporary processing.

[0079] Optimally, a through slot 28 is provided at the end of the connecting frame 20. The through slot 28 is square, and a lower cutter 29 is slidably connected in the through slot 28. The lower cutter 29 is connected to a connecting block 30. The connecting block 30 is fixedly connected to the fixing frame 9. When the fixing frame 9 moves upward, it can drive the lower cutter 29 to move upward. Correspondingly, an upper cutter 31 is fixedly provided on the connecting frame 20. The upper cutter 31 is staggered with the lower cutter 29, and moves up to the lower cutter 29 to cooperate with the upper cutter 31 to cut the tape 18.

[0080] Overall working process: 1. When the electric vehicle needs to be charged, the charging gun 6 is pulled out of the box 1, and the connecting wire 5 of the charging gun 6 passes through the processing box 2. The sensor 7 between the box 1 and the connecting wire 5 detects defects in the connecting wire 5. When there is a defect on the connecting wire 5, and the connecting wire 5 moves forward to the top of the fixing frame 9, the cylinder 16 works, driving the clamping claw 15 to move up to clamp the fixing connecting wire 5. The clamping speed is set to 300-500 milliseconds, and the clamping speed is kept fast so that the user can no longer pull the charging gun 6 outward; 2. During the clamping process of the clamping jaws 15, the support seat 8 is driven to move upward, and the upward movement of the support seat 8 drives the fixed frame 9, the rotating frame 10, and the driving gear 11 to move upward as a whole. The driving gear 11 moves upward to mesh with the two driving wheels 12. At the same time, the support seat 8 moves upward so that the adhesive tape 18 is attached to the lower side of the connecting line 5 and reaches the bottom of the notch 13 for compaction and attachment; 3. At the same time, the lower cutter 29 moves upward and cooperates with the upper cutter 31 to cut the tape 18, so that the tape 18 is cut off; 4. The driving wheel 12 rotates, driving the driving gear 11 and the rotating frame 10 to rotate, and the number of rotations is set to be greater than 3, so that the cut tape 18 is wound around the connecting wire 5 for multiple turns under the action of the rotating frame 10, so that the insulating tape 18 is automatically pasted on the defective part of the connecting wire 5, so as to achieve the purpose of temporarily treating the defect such as damage; 5. After the temporary adhesive tape 18 is processed, the above characteristics are reset. At this time, the user can pull the charging gun 6 for charging. At this time, the motor drives the driving roller 25 to rotate, so that the tape 18 with a high friction force between the driving roller 25 is driven to extend to the notch 13, and the new tape 18 is set for the next defect detection and winding of the adhesive tape 18. Under the above settings, when the connecting line 5 has defects, the defects can be temporarily and automatically processed without the user having to perform temporary repairs, reducing the safety hazards of non-professional users, and there is no need to stop the machine before formal professional repairs, reducing labor costs and time costs.

[0081] It should be noted that a portion of the connecting wire 5 near the charging gun 6 cannot be detected for defects due to the obstruction of the volume of the processing box 2, but the length of this portion is relatively small and will not be wound onto the winding wheel 4. Winding and unwinding cause little damage to it, so the impact on the overall defect detection is relatively small, and further improvements can be made in the future.

[0082] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An intelligent detection system for identifying charging pile circuit aging, characterized in that ,include: A power conversion module, used to convert high voltage into power that can be used by circuit aging detection and external automatic processing of charging gun connection line defects; The power conversion module includes: a power input processing module for performing preliminary processing on the input power; a power module for further converting the processed power into the power required by the system and the power of the external automatic processing device for charging gun connection line defects; Current detection module, used to detect circuit current changes in real time; Microcontroller module, used to control the overall system operation and analyze current change data; The Bluetooth transmitter module is used to transmit the analysis results to the external processor in real time.

2. The intelligent detection system according to claim 1 is characterized in that , the power input processing module includes: The fuse will melt when the current exceeds the preset value to achieve overcurrent protection; Thermistor, whose resistance decreases as the temperature rises when the power is turned on, is used to limit the inrush current when the power is turned on; Common mode inductor, suppresses common mode noise through magnetic field coupling; Capacitors filter out differential mode noise by storing and releasing energy; The diode converts alternating current into pulsating direct current through its unidirectional conductive characteristics.

3. The intelligent detection system according to claim 1 is characterized in that , the power module comprises: Input filter capacitor, used to smooth pulsating DC power; Rectifier diodes, to further rectify the power supply; The starting resistor network is used to limit the current when the system starts; High-frequency decoupling capacitors are used to filter out high-frequency noise; Main control, dynamically adjusts the output voltage according to the feedback signal; Isolation transformer, which realizes electrical isolation and voltage conversion through the principle of electromagnetic induction; The secondary-side rectifier diode rectifies the transformer secondary output; Output filter capacitor, smoothing the rectified voltage; The voltage divider resistor reduces the output voltage proportionally and provides it to the main control as a feedback signal; Linear regulator provides a stable 5V output through internal voltage comparison and regulation circuits.

4. The intelligent detection system according to claim 1 is characterized in that , the current detection module includes: Hall effect current sensor, which uses the Hall effect principle to measure current in a non-contact manner; Protection and filtering components, including input filter capacitors and diodes, are used to protect the circuit and filter out interference signals; The signal conditioning circuit includes a sampling resistor, a voltage dividing resistor, a filter capacitor and an output resistor, and is used to adjust the sensor output signal to a level range suitable for processing by a microcontroller.

5. The intelligent detection system according to claim 1 is characterized in that , the microcontroller module includes: A voltage regulator module is used to provide a stable power supply for the microcontroller; Processing module, used to perform data acquisition, analysis and control functions; The voltage regulating module comprises: Low-dropout linear regulator that dynamically converts higher voltage to 3.3V through internal feedback regulation circuit; Input capacitors and output capacitors filter and stabilize voltage through the charging and discharging process; The processing module includes a microcontroller chip, which controls the operation of the overall intelligent detection system by executing a preset program, including data acquisition, circuit aging judgment and communication control.

6. The intelligent detection system according to claim 1 is characterized in that , the Bluetooth transmitting module includes: 3.3V linear regulator, providing stable power for the Bluetooth module; Power supply filter capacitor, to filter out power supply noise; Bluetooth module, which performs Bluetooth communication via radio waves; Antenna matching network, optimizing RF signal transmission efficiency; Signal interface resistor, matching signal level.

7. A smart charging pile, characterized in that ,include: The intelligent detection system for identifying charging pile circuit aging according to any one of claims 1 to 6; further comprising: Box body (1); A processing box (2) is arranged in the box body (1); A reel (4) for reeling in and unreeling the connecting wire (5); A charging gun (6) connected to the connecting wire (5); A sensor (7) detects surface defects of the connecting wire (5) in real time during its retraction and extension process; An automatic defect processing device (3) is arranged in the processing box (2) and is used to automatically process the defect when a defect of the connecting line (5) is detected.

8. The smart charging pile according to claim 7, characterized in that: The automatic defect processing device (3) comprises: Support seat (8); A fixing frame (9) is arranged on the supporting seat (8); A rotating frame (10) rotatably connected to the fixed frame (9); A driving gear (11) meshes with and drives the rotating frame (10) to rotate; A driving wheel (12) is arranged on the rotating frame (10) and rotates therewith; A connecting plate (14) is arranged on the rotating frame (10); A clamping claw (15) is arranged on the connecting plate (14); A cylinder (16) drives the clamping jaw (15) to open and close by air pressure; A fixing claw (17) is arranged on the supporting seat (8); Adhesive tape (18) is used to temporarily repair surface defects of the connecting wire (5); A driving cutting device (19) is used to convey and cut the adhesive tape (18).

9. The smart charging pile according to claim 8, characterized in that , the driving and cutting device (19) comprises: Connecting frame (20); A positioning plate (21) is arranged on the connecting frame (20) and is rotatable; A film (22) is arranged on the positioning plate (21) and rotates therewith; A support frame (23) is arranged on the connecting frame (20); A guide roller (24), a driving roller (25) and a guide roller (26), which are arranged on the support frame (23) and are rotatable, and are used to guide and convey the adhesive tape (18); A guide plate (27) is arranged on the support frame (23); A lower cutting knife (29) fixedly arranged on the guide plate (27); A connecting block (30) slidably connected to the guide plate (27); The upper cutter (31) is arranged on the connecting block (30) and can cooperate with the lower cutter (29) to cut the adhesive tape (18).

Images