A method and terminal for detecting and warning the life of a charging pile gun line gun head

Abstract

The application discloses a kind of charging pile gun line gun head life detection early warning method and terminal, monitor and accumulate the normal plug frequency of charging gun and rated plug frequency, determine first parameter;Monitoring and accumulating the abnormal plug frequency of charging gun, in combination with rated abnormal plug frequency, determine second parameter;The temperature rise rate when monitoring charging gun charges and the number of times of overtemperature, in combination with rated maximum temperature, determine third parameter;According to the first parameter, the second parameter and the third parameter, weighted calculation gun head life score, and according to the life score send early warning notice;From the normal plug frequency of charging gun, abnormal plug frequency, temperature rise rate when charging and the number of times of overtemperature, consider multiple aspects to calculate the life score of charging pile gun line gun head, early warning notice according to life score, can effectively evaluate the use state of charging pile gun line gun head, initiate early warning notice, ensure maintenance, replace in time, guarantee the use experience and use safety of user.

Description

Technical Field

[0001] The present invention relates to the technical field of charging gun status detection, and in particular to a method and terminal for detecting and warning the life of a charging pile gun line gun head. Background Art

[0002] The rapid development and widespread adoption of new energy vehicles has led to increasingly stringent, comprehensive, and systematic safety requirements for the charging process and the entire vehicle. The charging pile gun cable head is a key component of the charging pile. It is the wiring device used to connect the electric vehicle to the charging pile. It converts the power supply into the electrical energy required by the electric vehicle, thereby charging the electric vehicle. The charging pile gun cable head has a lifespan requirement for the number of times it can be plugged and unplugged. Prolonged plugging and unplugging will cause the charging pile gun cable head to wear and even deform. As the power terminal pins wear, the resistance increases. Increased resistance generates heat, which ultimately results in a small amount of energy loss in the form of heat energy. Therefore, as the power increases, the loss also increases. In extreme cases, the charging pile gun cable head can even burn out and cause safety accidents.

[0003] At present, charging piles only monitor the temperature of the charging gun wire tip, the gun wire connection status, and the gun lock status during the charging process. If an abnormality occurs, charging will be stopped, but it is difficult to intuitively understand the life status of the charging pile gun wire tip.

[0004] At the same time, it is possible that charging is completed but the charging pile gun line is not unlocked or charging is in progress, and the user violently pulls out the gun, which can easily cause the charging pile gun line gun head to wear or even deform.

[0005] When the number of times the charging pile gun line gun head is plugged in and out is approaching its service life or the charging pile gun line gun head is worn or even deformed, the user will be unable to charge or the charging pile gun line gun head will suffer large power loss, affecting the user experience. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a method and terminal for detecting and warning the life of a charging pile gun line gun head, which can timely warn the life of the charging pile gun line gun head and improve the user experience.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A method for detecting and warning the life of a charging pile gun line gun head, comprising the steps of:

[0009] S1. Monitor and accumulate the normal plugging and unplugging times and the rated plugging and unplugging times of the charging gun to determine a first parameter;

[0010] S2. Monitor and accumulate the number of abnormal plugging and unplugging times of the charging gun, and determine the second parameter based on the rated number of abnormal plugging and unplugging times;

[0011] S3. Monitor the temperature rise rate and over-temperature frequency of the charging gun during charging, and determine the third parameter based on the rated maximum temperature.

[0012] S4. Calculate a weighted life score of the gun tip based on the first parameter, the second parameter, and the third parameter, and send an early warning notification based on the life score.

[0013] In order to solve the above technical problems, another technical solution adopted by the present invention is:

[0014] A terminal for detecting and warning the life of a charging pile gun line gun tip includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented:

[0015] S1. Monitor and accumulate the normal plugging and unplugging times and the rated plugging and unplugging times of the charging gun to determine a first parameter;

[0016] S2. Monitor and accumulate the number of abnormal plugging and unplugging times of the charging gun, and determine the second parameter based on the rated number of abnormal plugging and unplugging times;

[0017] S3. Monitor the temperature rise rate and over-temperature frequency of the charging gun during charging, and determine the third parameter based on the rated maximum temperature.

[0018] S4. Calculate a weighted life score of the gun tip based on the first parameter, the second parameter, and the third parameter, and send an early warning notification based on the life score.

[0019] The beneficial effects of the present invention are: a method and terminal for detecting and warning the life of a charging pile gun line gun head of the present invention calculates the life score of the charging pile gun line gun head from multiple aspects considering the normal plug-in and unplugging times of the charging gun, the abnormal plug-in and unplugging times, the temperature rise rate during charging, and the overtemperature times, and issues early warning notifications based on the life score. This can effectively evaluate the usage status of the charging pile gun line gun head and initiate early warning notifications in a timely manner to ensure timely maintenance and replacement, thereby protecting the user experience and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a flow chart of a method for detecting and warning the life of a charging pile gun line gun head according to an embodiment of the present invention;

[0021] Figure 2 This is a structural diagram of a terminal for detecting and warning the life of a charging pile gun line tip according to an embodiment of the present invention;

[0022] Description of labels:

[0023] 1. A terminal for detecting and warning the life of a charging pile gun line and a gun head; 2. A processor; 3. A memory. DETAILED DESCRIPTION

[0024] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0025] Please refer to Figure 1 A method for detecting and warning the life of a charging pile gun line gun head includes the following steps:

[0026] S1. Monitor and accumulate the normal plugging and unplugging times and the rated plugging and unplugging times of the charging gun to determine a first parameter;

[0027] S2. Monitor and accumulate the number of abnormal plugging and unplugging times of the charging gun, and determine the second parameter based on the rated number of abnormal plugging and unplugging times;

[0028] S3. Monitor the temperature rise rate and over-temperature frequency of the charging gun during charging, and determine the third parameter based on the rated maximum temperature.

[0029] S4. Calculate a weighted life score of the gun tip based on the first parameter, the second parameter, and the third parameter, and send an early warning notification based on the life score.

[0030] From the above description, it can be seen that the beneficial effects of the present invention are: a method and terminal for detecting and warning the life of a charging pile gun line gun head of the present invention calculates the life score of the charging pile gun line gun head from multiple aspects considering the normal plug-in and unplugging times of the charging gun, the abnormal plug-in and unplugging times, the temperature rise rate during charging, and the overheating times, and issues early warning notifications based on the life score. It can effectively evaluate the usage status of the charging pile gun line gun head and initiate early warning notifications in a timely manner to ensure timely maintenance and replacement, thereby protecting the user experience and safety.

[0031] Furthermore, step S1 includes the steps of:

[0032] S11. Determine the normal plugging and unplugging times of the charging gun by detecting whether the charging gun is connected or disconnected, combining whether the charging status of the charging pile has started or ended, and whether the current voltage and current are 0 or within a preset decimal range;

[0033] S12. Compare the rated plugging and unplugging times provided by the manufacturer and calculate the first parameter A:

[0034] 100*(MN) / M;

[0035] Among them, M represents the rated number of plugging and unplugging times, and N represents the current normal plugging and unplugging times of the charging gun.

[0036] From the above description, it can be seen that by detecting the connection or disconnection of the charging gun, the charging status, current voltage and current of the charging pile are combined to identify whether the charging gun is plugging and unplugging normally, and based on the rated number of plugging and unplugging times, determine one of the parameter values ​​reflecting the service life of the charging gun.

[0037] Furthermore, step S2 includes the steps of:

[0038] S21: If the charging gun is disconnected or the gun head lock feedback is unlocked, and the charging pile is in charging state or the main circuit voltage or current is greater than the preset threshold, it will be recorded as abnormal plugging and unplugging and the number of times will be accumulated;

[0039] S22. Compare the rated abnormal plugging and unplugging times provided by the manufacturer and calculate the first parameter B:

[0040] 100*(mn) / m;

[0041] Here, m represents the rated number of abnormal plugging and unplugging times, and n represents the current number of abnormal plugging and unplugging times of the charging gun.

[0042] From the above description, it can be seen that abnormal plugging and unplugging is determined based on the disconnection of the charging gun or the unlocking of the gun head lock, and the charging pile is in charging state or the main circuit voltage or current is greater than the preset threshold. Based on the number of abnormal plugging and unplugging times and the rated number of abnormal plugging and unplugging times, the value of one of the parameters reflecting the service life of the charging gun is determined.

[0043] Furthermore, step S3 is specifically as follows:

[0044] For a single charging order, monitor the temperature rise rate of the charging gun during charging. If the temperature rise rate is greater than a first temperature rise threshold, record a first score.

[0045] If the temperature rise rate is greater than the second temperature rise threshold and less than the first temperature rise threshold, and the ambient temperature is less than the preset ambient temperature threshold and the charging current is less than the preset temperature rise current threshold, then record the second score;

[0046] Detect whether the gun tip temperature reaches the first over-temperature threshold, and if so, record the third score;

[0047] Detect whether the gun tip temperature reaches the second over-temperature threshold and is less than the first over-temperature threshold. If so, record the third score;

[0048] Determine the third parameter C based on the accumulated order score and the preset rated temperature control score:

[0049] C = 100*(jk) / j;

[0050] Among them, j represents the total score of rated temperature control, and k represents the cumulative score value of the order.

[0051] As can be seen from the above description, if there is wear or foreign matter on the contact surface between the gun head and the gun base, abnormal temperature rise data is very likely to be generated. The present invention determines one of the parameter values ​​reflecting the service life of the charging gun through the temperature rise rate and overheating conditions during charging in a single charging order.

[0052] Furthermore, step S4 includes the steps of:

[0053] S41. Calculate the tip life score RT based on the first parameter A, the second parameter B, the third parameter C, and the corresponding preset first weight α, the second weight β, and the third weight θ:

[0054] RT = (A*α+B*β+C*θ) / L;

[0055] Among them, L represents the preset original health score;

[0056] S42, judging the life score of the gun tip, and issuing a status warning for immediate processing if the life score of the gun tip is less than a first life threshold;

[0057] If the tip life score is greater than the first life threshold and less than the second life threshold, a status warning is issued to strengthen inspection and timely maintenance;

[0058] If the tip life score is greater than the second life threshold and less than the third life threshold, a weekly or daily report recording the operation data is generated.

[0059] As can be seen from the above description, a weighted calculation is performed based on the above-mentioned parameter values ​​reflecting the service life of the charging gun to comprehensively reflect the status of the charging gun, and different feedback warning methods are adopted according to different degrees of charging gun status.

[0060] Please refer to Figure 2 A terminal for detecting and warning the life of a charging pile gun line gun head includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented:

[0061] S1. Monitor and accumulate the normal plugging and unplugging times and the rated plugging and unplugging times of the charging gun to determine a first parameter;

[0062] S2. Monitor and accumulate the number of abnormal plugging and unplugging times of the charging gun, and determine the second parameter based on the rated number of abnormal plugging and unplugging times;

[0063] S3. Monitor the temperature rise rate and over-temperature frequency of the charging gun during charging, and determine the third parameter based on the rated maximum temperature.

[0064] S4. Calculate a weighted life score of the gun tip based on the first parameter, the second parameter, and the third parameter, and send an early warning notification based on the life score.

[0065] From the above description, it can be seen that the beneficial effects of the present invention are: a method and terminal for detecting and warning the life of a charging pile gun line gun head of the present invention calculates the life score of the charging pile gun line gun head from multiple aspects considering the normal plug-in and unplugging times of the charging gun, the abnormal plug-in and unplugging times, the temperature rise rate during charging, and the overheating times, and issues early warning notifications based on the life score. It can effectively evaluate the usage status of the charging pile gun line gun head and initiate early warning notifications in a timely manner to ensure timely maintenance and replacement, thereby protecting the user experience and safety.

[0066] Furthermore, step S1 includes the steps of:

[0067] S11. Determine the normal plugging and unplugging times of the charging gun by detecting whether the charging gun is connected or disconnected, combining whether the charging status of the charging pile has started or ended, and whether the current voltage and current are 0 or within a preset decimal range;

[0068] S12. Compare the rated plugging and unplugging times provided by the manufacturer and calculate the first parameter A:

[0069] 100*(MN) / M;

[0070] Among them, M represents the rated number of plugging and unplugging times, and N represents the current normal plugging and unplugging times of the charging gun.

[0071] From the above description, it can be seen that by detecting the connection or disconnection of the charging gun, the charging status, current voltage and current of the charging pile are combined to identify whether the charging gun is plugging and unplugging normally, and based on the rated number of plugging and unplugging times, determine one of the parameter values ​​reflecting the service life of the charging gun.

[0072] Furthermore, step S2 includes the steps of:

[0073] S21: If the charging gun is disconnected or the gun head lock feedback is unlocked, and the charging pile is in charging state or the main circuit voltage or current is greater than the preset threshold, it will be recorded as abnormal plugging and unplugging and the number of times will be accumulated;

[0074] S22. Compare the rated abnormal plugging and unplugging times provided by the manufacturer and calculate the first parameter B:

[0075] 100*(mn) / m;

[0076] Here, m represents the rated number of abnormal plugging and unplugging times, and n represents the current number of abnormal plugging and unplugging times of the charging gun.

[0077] From the above description, it can be seen that abnormal plugging and unplugging is determined based on the disconnection of the charging gun or the unlocking of the gun head lock, and the charging pile is in charging state or the main circuit voltage or current is greater than the preset threshold. Based on the number of abnormal plugging and unplugging times and the rated number of abnormal plugging and unplugging times, the value of one of the parameters reflecting the service life of the charging gun is determined.

[0078] Furthermore, step S3 is specifically as follows:

[0079] For a single charging order, monitor the temperature rise rate of the charging gun during charging. If the temperature rise rate is greater than a first temperature rise threshold, record a first score.

[0080] If the temperature rise rate is greater than the second temperature rise threshold and less than the first temperature rise threshold, and the ambient temperature is less than the preset ambient temperature threshold and the charging current is less than the preset temperature rise current threshold, then record the second score;

[0081] Detect whether the gun tip temperature reaches the first over-temperature threshold, and if so, record the third score;

[0082] Detect whether the gun tip temperature reaches the second over-temperature threshold and is less than the first over-temperature threshold. If so, record the third score;

[0083] Determine the third parameter C based on the accumulated order score and the preset rated temperature control score:

[0084] C = 100*(jk) / j;

[0085] Among them, j represents the total score of rated temperature control, and k represents the cumulative score value of the order.

[0086] As can be seen from the above description, if there is wear or foreign matter on the contact surface between the gun head and the gun base, abnormal temperature rise data is very likely to be generated. The present invention determines one of the parameter values ​​reflecting the service life of the charging gun through the temperature rise rate and overheating conditions during charging in a single charging order.

[0087] Furthermore, step S4 includes the steps of:

[0088] S41. Calculate the tip life score RT based on the first parameter A, the second parameter B, the third parameter C, and the corresponding preset first weight α, the second weight β, and the third weight θ:

[0089] RT = (A*α+B*β+C*θ) / L;

[0090] Among them, L represents the preset original health score;

[0091] S42, judging the life score of the gun tip, and issuing a status warning for immediate processing if the life score of the gun tip is less than a first life threshold;

[0092] If the tip life score is greater than the first life threshold and less than the second life threshold, a status warning is issued to strengthen inspection and timely maintenance;

[0093] If the tip life score is greater than the second life threshold and less than the third life threshold, a weekly or daily report recording the operation data is generated.

[0094] As can be seen from the above description, a weighted calculation is performed based on the above-mentioned parameter values ​​reflecting the service life of the charging gun to comprehensively reflect the status of the charging gun, and different feedback warning methods are adopted according to different degrees of charging gun status.

[0095] The present invention provides a method and terminal for detecting and warning the life of a charging pile gun line gun head, which is suitable for life assessment and early warning of a charging pile gun line gun head in a new energy vehicle charging station.

[0096] Please refer to Figure 1 , embodiment 1 of the present invention is:

[0097] A method for detecting and warning the life of a charging pile gun line gun head, comprising the steps of:

[0098] S1. Monitor and accumulate the normal plugging and unplugging times and the rated plugging and unplugging times of the charging gun to determine a first parameter;

[0099] Step S1 includes the steps of:

[0100] S11. Determine the normal plugging and unplugging times of the charging gun by detecting whether the charging gun is connected or disconnected, combining whether the charging status of the charging pile has started or ended, and whether the current voltage and current are 0 or within a preset decimal range;

[0101] S12. Compare the rated plugging and unplugging times provided by the manufacturer and calculate the first parameter A:

[0102] 100*(MN) / M;

[0103] Among them, M represents the rated number of plugging and unplugging times, and N represents the current normal plugging and unplugging times of the charging gun.

[0104] In this embodiment, by monitoring the connection or disconnection of the gun line CC1, combined with whether the charging state of the vehicle pile starts and ends, and whether the voltage and current at this time are 0 or a small value, such as the current is less than 10A and the voltage is less than 60V, the first parameter A is calculated and its weight α is designed by comparing it with the rated plug-in and unplug times provided by the manufacturer.

[0105] S2. Monitor and accumulate the number of abnormal plugging and unplugging times of the charging gun, and determine the second parameter based on the rated number of abnormal plugging and unplugging times;

[0106] Step S2 includes the steps of:

[0107] S21: If the charging gun is disconnected or the gun head lock feedback is unlocked, and the charging pile is in charging state or the main circuit voltage or current is greater than the preset threshold, it will be recorded as abnormal plugging and unplugging and the number of times will be accumulated;

[0108] S22. Compare the rated abnormal plugging and unplugging times provided by the manufacturer and calculate the first parameter B:

[0109] 100*(mn) / m;

[0110] Here, m represents the rated number of abnormal plugging and unplugging times, and n represents the current number of abnormal plugging and unplugging times of the charging gun.

[0111] In this embodiment, if the gun line CC1 connection is disconnected or the gun head lock feedback is unlocked, and the vehicle charging pile is in progress or the voltage and current on the main road are not negligible [the voltage is greater than 60V or the current is greater than 10A], it is considered to be an abnormal plugging or forced plugging. The first parameter B is calculated and its weight β is designed by comparing it with the rated number of abnormal plugging and unplugging times provided by the manufacturer.

[0112] S3. Monitor the temperature rise rate and over-temperature frequency of the charging gun during charging, and determine the third parameter based on the rated maximum temperature.

[0113] Step S3 is specifically as follows:

[0114] For a single charging order, monitor the temperature rise rate of the charging gun during charging. If the temperature rise rate is greater than a first temperature rise threshold, record a first score.

[0115] If the temperature rise rate is greater than the second temperature rise threshold and less than the first temperature rise threshold, and the ambient temperature is less than the preset ambient temperature threshold and the charging current is less than the preset temperature rise current threshold, then record the second score;

[0116] Detect whether the gun tip temperature reaches the first over-temperature threshold, and if so, record the third score;

[0117] Detect whether the gun tip temperature reaches the second over-temperature threshold and is less than the first over-temperature threshold. If so, record the third score;

[0118] Determine the third parameter C based on the accumulated order score and the preset rated temperature control score:

[0119] C = 100*(jk) / j;

[0120] Among them, j represents the total score of rated temperature control, and k represents the cumulative score value of the order.

[0121] In this embodiment, it is taken into account that if there is wear or foreign matter on the contact surface between the gun tip and the gun seat, abnormal temperature rise data will be easily generated. Long-term use in this way will also increase the degree of wear on the gun tip, such as arcing will be easily formed, and excessive temperature rise will damage the gun body itself. By monitoring the temperature rise rate and the number of overheating during charging, comparing the maximum temperature rise rate of the normal gun line under different working conditions, and combining the rated maximum temperature, the third parameter C is determined, and its weight θ is designed. Specifically, in this embodiment, the first temperature rise threshold is 0.5℃ / min, the second temperature rise threshold is 0.3℃ / min, the ambient temperature threshold is 30℃, the temperature rise current threshold is 180A, the first overtemperature threshold is 90℃, the second overtemperature threshold is 85℃, the first score is 2 points, the second score is 1 point, the third score is 2 points, and the fourth score is 1 point, as shown below:

[0122] If the temperature rise rate is greater than 0.5℃ / min, 2 points will be deducted for each note; if the temperature rise rate is 0.3℃ / min, the ambient temperature inside the pile is less than 30℃, and the charging current is less than 180A, 1 point will be deducted for each note; if the gun tip temperature overheats to 90℃ for a single order, 2 points will be deducted; if the gun tip temperature reaches a maximum of 85℃ for a single order, 1 point will be deducted.

[0123] In other equivalent embodiments, the above values ​​can be adjusted according to actual needs.

[0124] S4. Calculate a weighted life score of the gun tip based on the first parameter, the second parameter, and the third parameter, and send an early warning notification based on the life score;

[0125] Step S4 includes the steps of:

[0126] S41. Calculate the tip life score RT based on the first parameter A, the second parameter B, the third parameter C, and the corresponding preset first weight α, the second weight β, and the third weight θ:

[0127] RT = (A*α+B*β+C*θ) / L;

[0128] Among them, L represents the preset original health score;

[0129] S42, judging the life score of the gun tip, and issuing a status warning for immediate processing if the life score of the gun tip is less than a first life threshold;

[0130] If the tip life score is greater than the first life threshold and less than the second life threshold, a status warning is issued to strengthen inspection and timely maintenance;

[0131] If the tip life score is greater than the second life threshold and less than the third life threshold, a weekly or daily report recording the operation data is generated.

[0132] In this embodiment, the charging pile promptly and comprehensively calculates the above parameters (first parameter A, second parameter B, third parameter C), performs comprehensive calculations, obtains the life health level of the gun head, and makes necessary warnings.

[0133] In this embodiment, the severity of violent plugging and unplugging is higher, even leading to direct equipment damage. Abnormal temperature rise and overheating are likely to indicate scratches and other wear on the contact surfaces between the lead and the mount, accelerating aging. Therefore, the correction coefficients β > θ > α. In this embodiment, the values ​​are designed to range from α to 0.1 to 0.2, θ to 0.25 to 0.3, and β to 0.5 to 0.65.

[0134] At the same time, different early warning treatments are made according to the gun tip life score: after the total score is calculated, it is compared with the expected set health level area to distinguish the maintenance urgency. For example, when the gun tip life score is below 40%, it is recommended to take immediate action and replace the gun line, etc.; when it is between 40% and 60%, inspection and maintenance should be strengthened and timely maintenance should be carried out; when it is between 60% and 75%, more attention should be paid, and the operating data should be counted weekly or daily; above 75%, normal plan, inspection and regular maintenance can be carried out.

[0135] Please refer to Figure 2 , the second embodiment of the present invention is:

[0136] A terminal 1 for detecting and warning the life of a charging pile gun line gun tip includes a processor 2, a memory 3, and a computer program stored in the memory 3 and executable on the processor 2. When the processor 2 executes the computer program, the steps of the method for detecting and warning the life of a charging pile gun line gun tip in the first embodiment above are implemented.

[0137] In summary, the present invention provides a method and terminal for detecting and warning the life of a charging pile gun line gun head. The method and terminal calculate the life score of the charging pile gun line gun head based on the normal plug-in and unplugging times of the charging gun, the abnormal plug-in and unplugging times, the temperature rise rate during charging, and the number of over-temperature times. The method issues a warning notification based on the life score, which can effectively evaluate the usage status of the charging pile gun line gun head and promptly initiate a warning notification to ensure timely maintenance and replacement, thereby protecting the user's experience and safety. At the same time, by detecting abnormal / violent plug-in according to whether the charging gun is disconnected or the gun head lock is unlocked, and the charging pile is in a charging state or the main circuit voltage or current is greater than a preset threshold, the method can reflect the presence of wear or foreign matter on the contact surface between the gun head and the gun seat through the temperature rise rate during charging and the over-temperature situation, thereby achieving more accurate service life detection and warning.

[0138] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for detecting and warning the life of a charging pile gun line gun head, characterized in that: Including steps: S1. Monitor and accumulate the normal plugging and unplugging times and the rated plugging and unplugging times of the charging gun to determine a first parameter; S2. Monitor and accumulate the number of abnormal plugging and unplugging times of the charging gun, and determine the second parameter based on the rated number of abnormal plugging and unplugging times; Step S2 includes the steps of: S21: If the charging gun is disconnected or the gun head lock feedback is unlocked, and the charging pile is in charging state or the main circuit voltage or current is greater than the preset threshold, it will be recorded as abnormal plugging and unplugging and the number of times will be accumulated; S22. Compare the rated abnormal plugging and unplugging times provided by the manufacturer and calculate the first parameter B: 100*(mn) / m; Among them, m represents the rated number of abnormal plug-in and pull-out times, and n represents the current number of abnormal plug-in and pull-out times of the charging gun; S3. Monitor the temperature rise rate and over-temperature frequency of the charging gun during charging, and determine the third parameter based on the rated maximum temperature. Step S3 is specifically as follows: For a single charging order, monitor the temperature rise rate of the charging gun during charging. If the temperature rise rate is greater than a first temperature rise threshold, record a first score. If the temperature rise rate is greater than the second temperature rise threshold and less than the first temperature rise threshold, and the ambient temperature is less than the preset ambient temperature threshold and the charging current is less than the preset temperature rise current threshold, then record the second score; Detect whether the gun tip temperature reaches the first over-temperature threshold, and if so, record the third score; Detect whether the gun tip temperature reaches the second over-temperature threshold and is less than the first over-temperature threshold. If so, record the third score; Determine the third parameter C based on the accumulated order score and the preset rated temperature control score: C=100*(jk) / j; Among them, j represents the total score of rated temperature control, and k represents the cumulative score of the order; S4. Calculate a weighted life score of the gun tip based on the first parameter, the second parameter, and the third parameter, and send an early warning notification based on the life score.

2. A method for detecting and warning the life of a charging pile gun line gun head according to claim 1, characterized in that: Step S1 includes the steps of: S11. Determine the normal plugging and unplugging times of the charging gun by detecting whether the charging gun is connected or disconnected, combining whether the charging status of the charging pile has started or ended, and whether the current voltage and current are 0 or within a preset decimal range; S12. Compare the rated plugging and unplugging times provided by the manufacturer and calculate the first parameter A: 100*(MN) / M; Among them, M represents the rated number of plugging and unplugging times, and N represents the current normal plugging and unplugging times of the charging gun.

3. The method for detecting and warning the life of a charging pile gun line gun head according to claim 1 is characterized in that: Step S4 includes the steps of: S41. Calculate the tip life score RT based on the first parameter A, the second parameter B, the third parameter C, and the corresponding preset first weight α, the second weight β, and the third weight θ: RT=(A*α+ B*β+ C*θ) / L; Among them, L represents the preset original health score; S42, judging the life score of the gun tip, and issuing a status warning for immediate processing if the life score of the gun tip is less than a first life threshold; If the tip life score is greater than the first life threshold and less than the second life threshold, a status warning is issued to strengthen inspection and timely maintenance; If the tip life score is greater than the second life threshold and less than the third life threshold, a weekly or daily report recording the operation data is generated.

4. A terminal for detecting and warning the life of a charging pile gun line gun head, comprising a processor, a memory, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the computer program, the following steps are implemented: S1. Monitor and accumulate the normal plugging and unplugging times and the rated plugging and unplugging times of the charging gun to determine a first parameter; S2. Monitor and accumulate the number of abnormal plugging and unplugging times of the charging gun, and determine the second parameter based on the rated number of abnormal plugging and unplugging times; Step S2 includes the steps of: S21: If the charging gun is disconnected or the gun head lock feedback is unlocked, and the charging pile is in charging state or the main circuit voltage or current is greater than the preset threshold, it will be recorded as abnormal plugging and unplugging and the number of times will be accumulated; S22. Compare the rated abnormal plugging and unplugging times provided by the manufacturer and calculate the first parameter B: 100*(mn) / m; Among them, m represents the rated number of abnormal plug-in and pull-out times, and n represents the current number of abnormal plug-in and pull-out times of the charging gun; S3. Monitor the temperature rise rate and over-temperature frequency of the charging gun during charging, and determine the third parameter based on the rated maximum temperature. Step S3 is specifically as follows: For a single charging order, monitor the temperature rise rate of the charging gun during charging. If the temperature rise rate is greater than a first temperature rise threshold, record a first score. If the temperature rise rate is greater than the second temperature rise threshold and less than the first temperature rise threshold, and the ambient temperature is less than the preset ambient temperature threshold and the charging current is less than the preset temperature rise current threshold, then record the second score; Detect whether the gun tip temperature reaches the first over-temperature threshold, and if so, record the third score; Detect whether the gun tip temperature reaches the second over-temperature threshold and is less than the first over-temperature threshold. If so, record the third score; Determine the third parameter C based on the accumulated order score and the preset rated temperature control score: C=100*(jk) / j; Among them, j represents the total score of rated temperature control, and k represents the cumulative score of the order; S4. Calculate a weighted life score of the gun tip based on the first parameter, the second parameter, and the third parameter, and send an early warning notification based on the life score.

5. A terminal for detecting and warning the life of a charging pile gun line tip according to claim 4, characterized in that: Step S1 includes the steps of: S11. Determine the normal plugging and unplugging times of the charging gun by detecting whether the charging gun is connected or disconnected, combining whether the charging status of the charging pile has started or ended, and whether the current voltage and current are 0 or within a preset decimal range; S12. Compare the rated plugging and unplugging times provided by the manufacturer and calculate the first parameter A: 100*(MN) / M; Among them, M represents the rated number of plugging and unplugging times, and N represents the current normal plugging and unplugging times of the charging gun.

6. A terminal for detecting and warning the life of a charging pile gun line tip according to claim 4, characterized in that: Step S4 includes the steps of: S41. Calculate the tip life score RT based on the first parameter A, the second parameter B, the third parameter C, and the corresponding preset first weight α, the second weight β, and the third weight θ: RT=(A*α+ B*β+ C*θ) / L; Among them, L represents the preset original health score; S42, judging the life score of the gun tip, and issuing a status warning for immediate processing if the life score of the gun tip is less than a first life threshold; If the tip life score is greater than the first life threshold and less than the second life threshold, a status warning is issued to strengthen inspection and timely maintenance; If the tip life score is greater than the second life threshold and less than the third life threshold, a weekly or daily report recording the operation data is generated.

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