A self-unlocking method and terminal for abnormally locked charging gun

Abstract

The present invention provides a self-unlocking method and terminal for abnormally locked charging guns, comprising the following steps: S1, when the charging pile is not charging, periodically monitoring the electronic lock status of the charging gun. If it is locked, triggering a self-unlocking action and initializing the number of unlocks to 1; S2, entering a self-unlocking process to determine whether the electronic lock is abnormal. If so, proceeding to step S3; otherwise, proceeding to step S4; S3, determining whether the number of unlocks is greater than a preset number. If so, reporting the electronic lock fault; otherwise, incrementing the number of unlocks by one and returning to step S2; S4, sending an unlocking command to the charging pile, which sends an unlocking pulse signal to control the automatic unlocking of the electronic lock. The present invention periodically monitors the electronic lock status of the charging gun to achieve autonomous judgment of whether the electronic lock is abnormally locked in a non-faulty state. This method does not require an additional independent control module to achieve automatic unlocking of abnormal locks, saving time and effort, and greatly improving the user experience of the product.

Description

[0001] This case is a divisional application based on the invention patent with application date of April 27, 2022, application number 202210455265.5, and name "A control method and terminal for preventing abnormal locking of the charging gun". Technical Field

[0002] The present invention relates to the technical field of new energy equipment, and in particular to a self-unlocking method and terminal for an abnormally locked charging gun. Background Art

[0003] When charging new energy electric vehicles, the gun head of the charging gun needs to be connected to the vehicle pile through an electronic lock to prevent the high-voltage wire head from being exposed during charging and causing charging safety accidents.

[0004] Currently, charging equipment typically uses the charging station to send a locking or unlocking pulse signal, which is typically only sent once per control, thereby locking or unlocking the charging gun. However, in the event of an abnormal situation such as improper operation (usually due to occasional overvoltage or current, even though the electronic lock is not actually damaged), the charging gun remains locked and cannot be removed. In this case, it is usually necessary to either contact professional maintenance personnel or perform destructive treatment on the charging gun, which is time-consuming and labor-intensive, and can easily damage the equipment and reduce the user experience.

[0005] Patent CN202020655904.9 discloses a control device for preventing a charging gun from being locked. This device adds an independent electronic lock control module to independently control the electronic lock, thereby resolving the issue. However, the addition of a separate module increases overall hardware and software control and costs.

[0006] Patent CN202011634705.0 discloses a circuit for automatically unlocking the charging gun's electronic lock in the event of an abnormal power failure. By adding a targeted protection circuit, the circuit integrates power-off unlocking and electronic lock control, resolving the issue of locking the gun by turning off the power. However, the power switch of charging pile equipment is generally not directly accessible to users, so seeking assistance from staff is still unavoidable. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a self-unlocking method and terminal for abnormal locking of a charging gun, which can realize autonomous judgment of whether the electronic lock is abnormal without adding an independent control module, and can automatically unlock the abnormal locking.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] A method for automatically unlocking a charging gun that is abnormally locked, comprising the steps of:

[0010] S1: When the charging pile is not charging, the electronic lock status of the charging gun is periodically monitored. If it is locked, the self-unlocking action is triggered and the number of unlocking times is initialized to 1;

[0011] S2, enter the self-unlocking process, determine whether the electronic lock is abnormal, if so, go to step S3, otherwise go to step S4;

[0012] S3, determining whether the number of unlocking times is greater than a preset number, if so, reporting the electronic lock failure, otherwise, incrementing the number of unlocking times by one and returning to step S2;

[0013] S4. Sending an unlock command to the charging pile, and the charging pile sending an unlock pulse signal to control the electronic lock to automatically unlock;

[0014] In step S2, it is determined whether the electronic lock is abnormal, specifically:

[0015] Determining whether the external voltage of the charging pile is less than a preset safety voltage;

[0016] If yes, determine whether the internal high-voltage main relay switch of the charging pile is disconnected;

[0017] If so, determining whether the output of the inner power module of the charging pile is disconnected;

[0018] If so, it is determined that the electronic lock is normal;

[0019] Otherwise, it is determined that the electronic lock is abnormal;

[0020] The outer voltage is the undischarged voltage remaining at the muzzle of the charging gun;

[0021] The preset safety voltage is 60V;

[0022] In step S3, the unlocking times are increased by one and the process returns to step S2. Specifically,

[0023] Suspend the self-unlocking process and set a waiting time for the suspension. When the waiting time is reached, increase the number of unlocking times by one and return to step S2;

[0024] The waiting time is 15 to 30 seconds;

[0025] After step S4, the following steps are also included:

[0026] After the electronic lock is unlocked, the electronic lock status is periodically monitored, with an interval of 5 seconds.

[0027] In order to solve the above technical problems, another technical solution adopted by the present invention is:

[0028] A self-unlocking terminal for an abnormally locked charging gun includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When executing the computer program, the processor implements the following steps:

[0029] S1: When the charging pile is not charging, the electronic lock status of the charging gun is periodically monitored. If it is locked, the self-unlocking action is triggered and the number of unlocking times is initialized to 1;

[0030] S2, enter the self-unlocking process, determine whether the electronic lock is abnormal, if so, go to step S3, otherwise go to step S4;

[0031] S3, determining whether the number of unlocking times is greater than a preset number, if so, reporting the electronic lock failure, otherwise, incrementing the number of unlocking times by one and returning to step S2;

[0032] S4. Sending an unlock command to the charging pile, and the charging pile sending an unlock pulse signal to control the electronic lock to automatically unlock;

[0033] In step S2, it is determined whether the electronic lock is abnormal, specifically:

[0034] Determining whether the external voltage of the charging pile is less than a preset safety voltage;

[0035] If yes, determine whether the internal high-voltage main relay switch of the charging pile is disconnected;

[0036] If so, determining whether the output of the inner power module of the charging pile is disconnected;

[0037] If so, it is determined that the electronic lock is normal;

[0038] Otherwise, it is determined that the electronic lock is abnormal;

[0039] The outer voltage is the undischarged voltage remaining at the muzzle of the charging gun;

[0040] The preset safety voltage is 60V;

[0041] In step S3, the unlocking times are increased by one and the process returns to step S2. Specifically,

[0042] Suspend the self-unlocking process and set a waiting time for the suspension. When the waiting time is reached, increase the number of unlocking times by one and return to step S2;

[0043] The waiting time is 15 to 30 seconds;

[0044] After step S4, the following steps are also included:

[0045] After the electronic lock is unlocked, the electronic lock status is periodically monitored, with an interval of 5 seconds.

[0046] The beneficial effects of the present invention are as follows: the present invention provides a self-unlocking method and terminal for abnormal locking of a charging gun, which periodically monitors the electronic lock state of the charging pile when the charging pile is not charging, and triggers the self-unlocking action to enter the self-unlocking process when the electronic lock is detected to be locked, and controls the charging pile to send an unlocking pulse signal to realize automatic unlocking of the abnormally locked electronic lock, and combines the electronic lock fault judgment and the accumulation of unlocking times to further realize the autonomous judgment of whether the electronic lock is abnormally locked under non-fault conditions, and realizes the automatic unlocking processing of abnormal locking without adding an independent control module, saving equipment software and hardware costs and reducing personnel intervention, saving time and effort, and improving product user favorability; wherein, through the three-way switching of the charging pile from the outside voltage to the inside voltage, from the main relay switch to the power module output switch The above conditions are judged in sequence to confirm the muzzle safety of the charging gun, so as to accurately judge whether the electronic lock is abnormally locked under non-fault conditions; when the electronic lock is judged to be abnormal after entering the self-unlocking process and the number of times the self-unlocking process is entered does not exceed the preset number of times, the self-unlocking process can be suspended and waited for a period of time before re-entering the self-unlocking process to re-judge the abnormality of the electronic lock, so as to avoid the misjudgment of abnormal locking due to the failure of the electronic lock itself. At the same time, the suspended waiting time can also facilitate the task scheduling center of the charging pile system to perform other tasks instead of always being in the task of calling the self-unlocking process, which further improves the performance of the charging pile; after the electronic lock is unlocked, it is necessary to return to periodic monitoring so as to make timely judgment and automatic unlocking of the next abnormal locking of the electronic lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is an overall flow chart of a method for self-unlocking a charging gun that is abnormally locked according to an embodiment of the present invention;

[0048] Figure 2 This is a specific flow chart of a method for self-unlocking a charging gun that is abnormally locked according to an embodiment of the present invention;

[0049] Figure 3 This is a structural diagram of a self-unlocking terminal for an abnormally locked charging gun according to an embodiment of the present invention.

[0050] Description of labels:

[0051] 1. A self-unlocking terminal for charging guns that are abnormally locked; 2. A memory; 3. A processor. DETAILED DESCRIPTION

[0052] 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.

[0053] Please refer to Figure 1 and Figure 2 A method for automatically unlocking a charging gun when it is abnormally locked includes the following steps:

[0054] S1: When the charging pile is not charging, the electronic lock status of the charging gun is periodically monitored. If it is locked, the self-unlocking action is triggered and the number of unlocking times is initialized to 1;

[0055] S2, enter the self-unlocking process, determine whether the electronic lock is abnormal, if so, go to step S3, otherwise go to step S4;

[0056] S3, determining whether the number of unlocking times is greater than a preset number, if so, reporting the electronic lock failure, otherwise, incrementing the number of unlocking times by one and returning to step S2;

[0057] S4. Sending an unlock command to the charging pile, and the charging pile sending an unlock pulse signal to control the electronic lock to automatically unlock;

[0058] In step S2, it is determined whether the electronic lock is abnormal, specifically:

[0059] Determining whether the external voltage of the charging pile is less than a preset safety voltage;

[0060] If yes, determine whether the internal high-voltage main relay switch of the charging pile is disconnected;

[0061] If so, determining whether the output of the inner power module of the charging pile is disconnected;

[0062] If so, it is determined that the electronic lock is normal;

[0063] Otherwise, it is determined that the electronic lock is abnormal;

[0064] The outer voltage is the undischarged voltage remaining at the muzzle of the charging gun;

[0065] The preset safety voltage is 60V;

[0066] In step S3, the unlocking times are increased by one and the process returns to step S2. Specifically,

[0067] Suspend the self-unlocking process and set a waiting time for the suspension. When the waiting time is reached, increase the number of unlocking times by one and return to step S2;

[0068] The waiting time is 15 to 30 seconds;

[0069] After step S4, the following steps are also included:

[0070] After the electronic lock is unlocked, the electronic lock status is periodically monitored, with an interval of 5 seconds.

[0071] From the above description, it can be seen that the beneficial effects of the present invention are: by periodically monitoring the state of the electronic lock when the charging pile is not charging, when it is detected that the electronic lock is locked, the self-unlocking action is triggered to enter the self-unlocking process, and the charging pile is controlled to send an unlocking pulse signal to realize the automatic unlocking of the abnormally locked electronic lock, and combined with the electronic lock fault judgment and the accumulation of unlocking times, it is further realized to realize the autonomous judgment of whether the electronic lock is abnormally locked under non-fault conditions, and the automatic unlocking processing of abnormal locking is realized without adding an independent control module, saving equipment software and hardware costs and reducing personnel intervention, saving time and effort, and improving product user favorability; wherein, the three conditions of the charging pile from the outside voltage to the inside voltage, from the main relay switch to the power module output switch are judged in sequence , to confirm the muzzle safety of the charging gun, so as to accurately judge whether the electronic lock is abnormally locked under non-fault conditions; when the electronic lock is judged to be abnormal after entering the self-unlocking process and the number of times the self-unlocking process is entered does not exceed the preset number, the self-unlocking process can be suspended and waited for a period of time before re-entering the self-unlocking process to re-judge the abnormality of the electronic lock, so as to avoid the electronic lock itself from malfunctioning and misjudging the abnormal locking. At the same time, the waiting time can also facilitate the task scheduling center of the charging pile system to perform other tasks, instead of always being in the task of calling the self-unlocking process, which further improves the performance of the charging pile; after the electronic lock is unlocked, it is necessary to return to periodic monitoring so as to make timely judgment and automatic unlocking of the next abnormal locking of the electronic lock.

[0072] Furthermore, before step S1, the following steps are further included:

[0073] Determine whether the charging pile can work normally. If so, go to step S1; otherwise, directly report the charging pile failure.

[0074] As can be seen from the above description, before periodically monitoring the electronic lock status, by first determining whether the entire charging pile can operate normally, useless abnormal locking judgments of the electronic lock on the faulty charging pile can be avoided.

[0075] Furthermore, the step S1 further includes:

[0076] When the electronic lock is periodically monitored to be unlocked, if a user comes to charge the new energy vehicle at this time, when it is detected that the user has inserted the charging gun into the charging port of the vehicle, the charging pile enters the charging process and sends a locking pulse signal to the electronic lock to lock it. When charging is completed, the non-charging state is restored and the periodic detection of the electronic lock state is re-entered;

[0077] If the electronic lock is detected to be unlocked at this time, a notification is sent to the user that the charging gun can be directly unplugged from the car charging port, and the user can unplug the charging gun by himself to end the charging work. If the electronic lock is detected to be locked at this time, the subsequent self-unlocking process is entered.

[0078] From the above description, it can be seen that when the periodically monitored electronic lock status is unlocked, if a user comes to charge the new energy vehicle at this time, it can ensure that the charging gun can safely charge the vehicle and safely complete the charging work.

[0079] Please refer to Figure 3 A self-unlocking terminal for an abnormally locked charging gun includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When executing the computer program, the processor implements the following steps:

[0080] S1: When the charging pile is not charging, the electronic lock status of the charging gun is periodically monitored. If it is locked, the self-unlocking action is triggered and the number of unlocking times is initialized to 1;

[0081] S2, enter the self-unlocking process, determine whether the electronic lock is abnormal, if so, go to step S3, otherwise go to step S4;

[0082] S3, determining whether the number of unlocking times is greater than a preset number, if so, reporting the electronic lock failure, otherwise, incrementing the number of unlocking times by one and returning to step S2;

[0083] S4. Sending an unlock command to the charging pile, and the charging pile sending an unlock pulse signal to control the electronic lock to automatically unlock;

[0084] In step S2, it is determined whether the electronic lock is abnormal, specifically:

[0085] Determining whether the external voltage of the charging pile is less than a preset safety voltage;

[0086] If yes, determine whether the internal high-voltage main relay switch of the charging pile is disconnected;

[0087] If so, determining whether the output of the inner power module of the charging pile is disconnected;

[0088] If so, it is determined that the electronic lock is normal;

[0089] Otherwise, it is determined that the electronic lock is abnormal;

[0090] The outer voltage is the undischarged voltage remaining at the muzzle of the charging gun;

[0091] The preset safety voltage is 60V;

[0092] In step S3, the unlocking times are increased by one and the process returns to step S2. Specifically,

[0093] Suspend the self-unlocking process and set a waiting time for the suspension. When the waiting time is reached, increase the number of unlocking times by one and return to step S2;

[0094] The waiting time is 15 to 30 seconds;

[0095] After step S4, the following steps are also included:

[0096] After the electronic lock is unlocked, the electronic lock status is periodically monitored, with an interval of 5 seconds.

[0097] The invention can be seen from the above description that the beneficial effects are as follows: based on the same technical concept, in conjunction with the above-mentioned method for self-unlocking of a charging gun that is abnormally locked, a self-unlocking terminal for a charging gun that is abnormally locked is provided, which periodically monitors the electronic lock state of the charging pile when it is not charging, and when it detects that the electronic lock is locked, it triggers the self-unlocking action to enter the self-unlocking process, controls the charging pile to send an unlocking pulse signal to realize automatic unlocking of the abnormally locked electronic lock, and combines the electronic lock fault judgment and the accumulation of unlocking times to further realize the autonomous judgment of whether the electronic lock is abnormally locked under non-fault conditions, and realizes the automatic unlocking processing of abnormal locking without adding an independent control module, saving equipment software and hardware costs and reducing personnel intervention, saving time and effort, and improving product user favorability; wherein, by changing the voltage of the charging pile from the outside to the inside and from the main circuit The three conditions from the relay switch to the power module output switch are judged in sequence to confirm the safety of the muzzle of the charging gun, so as to accurately judge whether the electronic lock is abnormally locked under non-fault conditions; when the electronic lock is judged to be abnormal after entering the self-unlocking process and the number of times the self-unlocking process is entered does not exceed the preset number of times, the self-unlocking process can be suspended and waited for a period of time before re-entering the self-unlocking process to re-judge the abnormality of the electronic lock, so as to avoid the electronic lock itself malfunctioning and misjudging the abnormal locking. At the same time, the suspended waiting time can also facilitate the task scheduling center of the charging pile system to perform other tasks instead of always being in the task of calling the self-unlocking process, which further improves the performance of the charging pile; after the electronic lock is unlocked, it is necessary to return to periodic monitoring so as to make timely judgment and automatic unlocking of the next abnormal locking of the electronic lock.

[0098] Furthermore, before step S1, the following steps are further included:

[0099] Determine whether the charging pile can work normally. If so, go to step S1; otherwise, directly report the charging pile failure.

[0100] As can be seen from the above description, before periodically monitoring the electronic lock status, by first determining whether the entire charging pile can operate normally, useless abnormal locking judgments of the electronic lock on the faulty charging pile can be avoided.

[0101] Furthermore, the step S1 further includes:

[0102] When the electronic lock is periodically monitored to be unlocked, if a user comes to charge the new energy vehicle at this time, when it is detected that the user has inserted the charging gun into the charging port of the vehicle, the charging pile enters the charging process and sends a locking pulse signal to the electronic lock to lock it. When charging is completed, the non-charging state is restored and the periodic detection of the electronic lock state is re-entered;

[0103] If the electronic lock is detected to be unlocked at this time, a notification is sent to the user that the charging gun can be directly unplugged from the car charging port, and the user can unplug the charging gun by himself to end the charging work. If the electronic lock is detected to be locked at this time, the subsequent self-unlocking process is entered.

[0104] From the above description, it can be seen that when the periodically monitored electronic lock status is unlocked, if a user comes to charge the new energy vehicle at this time, it can ensure that the charging gun can safely charge the vehicle and safely complete the charging work.

[0105] The present invention provides a self-unlocking method and terminal for an abnormally locked charging gun, which is suitable for solving the problem that the charging gun of a charging pile is abnormally locked in a non-charging state, causing the user to be unable to charge a new energy vehicle or unable to pull the gun head out of the vehicle charging port. The method and terminal are described in detail below with reference to an embodiment.

[0106] Please refer to Figure 1 , embodiment 1 of the present invention is:

[0107] A self-unlocking method for abnormally locked charging guns, such as Figure 1 As shown, the steps include:

[0108] S1: When the charging pile is not charging, the electronic lock status of the charging gun is periodically monitored. If it is locked, the self-unlocking action is triggered and the number of unlocking times is initialized to 1;

[0109] S2, enter the self-unlocking process, determine whether the electronic lock is abnormal, if so, go to step S3, otherwise go to step S4;

[0110] S3. Determine whether the number of unlocking times is greater than the preset number. If so, report the electronic lock failure. Otherwise, increase the number of unlocking times by one and return to step S2.

[0111] S4. Send an unlock command to the charging pile, and the charging pile sends an unlock pulse signal to control the electronic lock to automatically unlock.

[0112] That is, in this embodiment, by periodically monitoring the status of the electronic lock when the charging pile is not charging, when it is detected that the electronic lock is locked, the self-unlocking action is triggered to enter the self-unlocking process, and the charging pile is controlled to send an unlocking pulse signal to realize automatic unlocking of the abnormally locked electronic lock. In combination with the electronic lock fault judgment and the accumulation of unlocking times, the autonomous judgment of whether the electronic lock is abnormally locked in a non-faulty situation is further realized, and the fault can be reported in time to notify the maintenance personnel for repair when the electronic lock is abnormal, thereby ensuring the safety of the charging pile. Automatic unlocking of abnormal locks is realized without adding an independent control module, saving equipment software and hardware costs and reducing personnel intervention, saving time and effort, and improving product user favorability.

[0113] Please refer to Figure 2 , the second embodiment of the present invention is:

[0114] A method for self-unlocking a charging gun that is abnormally locked, based on the above embodiment 1, in this embodiment, before step S1, further includes:

[0115] Determine whether the charging pile can work normally. If so, go to step S1. Otherwise, directly report the charging pile failure. Figure 2 As shown, before periodically monitoring the status of the electronic lock, it is first determined whether the entire charging pile can work normally, so as to avoid unnecessary abnormal locking judgments of the electronic lock on the faulty charging pile. In addition, when it is determined that the charging pile is abnormal, an alarm is promptly issued to notify maintenance personnel to perform repairs, thereby ensuring the safety of the charging pile.

[0116] At the same time, in this embodiment, Figure 2 As shown, when the periodic monitoring electronic lock status is unlocked, if a user comes to charge a new energy vehicle at this time, when the user inserts the charging gun into the car's charging port, the charging pile will enter the charging process and send a locking pulse signal to the charging gun's electronic lock to lock it, allowing the charging gun to safely charge the car. After charging is completed and the non-charging state is restored, the periodic monitoring electronic lock status will be re-entered. If the electronic lock is detected to be unlocked at this time, the user can directly unplug the charging gun from the car's charging port to end the charging process; if the electronic lock is detected to be locked, the subsequent self-unlocking process will be entered.

[0117] Among them, in this embodiment, Figure 2 As shown, in step S2, it is determined whether the electronic lock is abnormal, specifically:

[0118] Determine whether the external voltage of the charging pile is less than the preset safety voltage;

[0119] If so, determine whether the high-voltage main relay switch inside the charging pile is disconnected;

[0120] If so, determine whether the output of the inner power module of the charging pile is disconnected;

[0121] If so, the electronic lock is judged to be normal;

[0122] Otherwise, it is determined that the electronic lock is abnormal.

[0123] In this embodiment, the preset safety voltage is 60V, and the external voltage is the undischarged voltage remaining at the muzzle of the charging gun. Figure 2 K1 and K2 represent the switches of the high-voltage main relay inside the charging pile, and the DC voltage represents the high-voltage output switch of the power module inside the charging pile. In this embodiment, the charging gun's muzzle is confirmed to be secure by sequentially evaluating the three conditions: external voltage to internal voltage, and from the main relay switch to the power module output switch. This allows accurate judgment of whether the electronic lock is abnormally locked without causing a fault.

[0124] In step S3, the unlocking times are increased by one and the process returns to step S2. Specifically,

[0125] The self-unlocking process is suspended and a waiting time is set. When the waiting time is reached, the number of unlocking times is increased by one and the process returns to step S2. In this embodiment, the waiting time can be set to 15 to 30 seconds.

[0126] That is, in this embodiment, when the electronic lock is judged to be abnormal after entering the self-unlocking process and the number of times the self-unlocking process is entered does not exceed the preset number of times, the self-unlocking process can be suspended and wait for a period of time before re-entering the self-unlocking process to re-judge the abnormality of the electronic lock, thereby avoiding the electronic lock itself from malfunctioning and misjudging abnormal locking. At the same time, the suspended waiting time can also facilitate the task scheduling center of the charging pile system to perform other tasks instead of always being in the task of calling the self-unlocking process, which further improves the performance of the charging pile.

[0127] Meanwhile, in this embodiment, after step S4, the following steps are further included:

[0128] After the electronic lock is unlocked, the system returns to periodic monitoring of the lock's status. The periodic monitoring interval can be set to 5 seconds. In other embodiments, the periodic monitoring interval can also be set based on actual conditions and needs. That is, after the electronic lock is unlocked, it is necessary to return to periodic monitoring to promptly detect the next abnormal locking of the electronic lock and automatically unlock it.

[0129] Please refer to Figure 3 , the third embodiment of the present invention is:

[0130] A self-unlocking terminal 1 for an abnormally locked charging gun includes a memory 2, a processor 3, and a computer program stored in the memory 2 and executable on the processor 3. In this embodiment, when the processor 3 executes the computer program, the steps of any one of the above-mentioned embodiments 1 to 2 are implemented.

[0131] In summary, the present invention provides a method and terminal for automatically unlocking a charging gun that is abnormally locked, which has the following beneficial effects:

[0132] 1. It can periodically monitor the status of the electronic lock when the charging pile is not charging, and realize the autonomous judgment of whether the electronic lock is abnormal.

[0133] 2. Automatic unlocking of abnormal locks can be achieved without adding an independent control module, saving equipment software and hardware costs and reducing personnel intervention, saving time and effort, and improving product user favorability.

[0134] 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 self-unlocking method for abnormally locked charging gun, characterized in that: Including steps: S1: When the charging pile is not charging, the electronic lock status of the charging gun is periodically monitored. If it is locked, the self-unlocking action is triggered and the number of unlocking times is initialized to 1; S2, enter the self-unlocking process, determine whether the electronic lock is abnormal, if so, go to step S3, otherwise go to step S4; S3, determining whether the number of unlocking times is greater than a preset number, if so, reporting the electronic lock failure, otherwise, incrementing the number of unlocking times by one and returning to step S2; S4. Sending an unlock command to the charging pile, and the charging pile sending an unlock pulse signal to control the electronic lock to automatically unlock; In step S2, it is determined whether the electronic lock is abnormal, specifically: Determining whether the external voltage of the charging pile is less than a preset safety voltage; If yes, determine whether the internal high-voltage main relay switch of the charging pile is disconnected; If so, determining whether the output of the inner power module of the charging pile is disconnected; If so, it is determined that the electronic lock is normal; Otherwise, it is determined that the electronic lock is abnormal; The outer voltage is the undischarged voltage remaining at the muzzle of the charging gun; The preset safety voltage is 60V; In step S3, the unlocking times are increased by one and the process returns to step S2. Specifically, Suspend the self-unlocking process and set a waiting time for the suspension. When the waiting time is reached, increase the number of unlocking times by one and return to step S2; The waiting time is 15 to 30 seconds; After step S4, the following steps are also included: After the electronic lock is unlocked, the electronic lock status is periodically monitored, with an interval of 5 seconds.

2. The self-unlocking method for an abnormally locked charging gun according to claim 1, characterized in that: Before step S1, the following steps are also included: Determine whether the charging pile can work normally. If so, go to step S1; otherwise, directly report the charging pile failure.

3. The self-unlocking method for an abnormally locked charging gun according to claim 1, characterized in that: The step S1 further includes: When the electronic lock is periodically monitored to be unlocked, if a user comes to charge the new energy vehicle at this time, when it is detected that the user has inserted the charging gun into the charging port of the vehicle, the charging pile enters the charging process and sends a locking pulse signal to the electronic lock to lock it. When charging is completed, the non-charging state is restored and the periodic detection of the electronic lock state is re-entered; If the electronic lock is detected to be unlocked at this time, a notification is sent to the user that the charging gun can be directly unplugged from the car charging port, and the user can unplug the charging gun by himself to end the charging work. If the electronic lock is detected to be locked at this time, the subsequent self-unlocking process is entered.

4. A self-unlocking terminal for charging guns that are abnormally locked, characterized in that: The invention comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program: S1: When the charging pile is not charging, the electronic lock status of the charging gun is periodically monitored. If it is locked, the self-unlocking action is triggered and the number of unlocking times is initialized to 1; S2, enter the self-unlocking process, determine whether the electronic lock is abnormal, if so, go to step S3, otherwise go to step S4; S3, determining whether the number of unlocking times is greater than a preset number, if so, reporting the electronic lock failure, otherwise, incrementing the number of unlocking times by one and returning to step S2; S4. Sending an unlock command to the charging pile, and the charging pile sending an unlock pulse signal to control the electronic lock to automatically unlock; In step S2, it is determined whether the electronic lock is abnormal, specifically: Determining whether the external voltage of the charging pile is less than a preset safety voltage; If yes, determine whether the internal high-voltage main relay switch of the charging pile is disconnected; If so, determining whether the output of the inner power module of the charging pile is disconnected; If so, it is determined that the electronic lock is normal; Otherwise, it is determined that the electronic lock is abnormal; The outer voltage is the undischarged voltage remaining at the muzzle of the charging gun; The preset safety voltage is 60V; In step S3, the unlocking times are increased by one and the process returns to step S2. Specifically, Suspend the self-unlocking process and set a waiting time for the suspension. When the waiting time is reached, increase the number of unlocking times by one and return to step S2; The waiting time is 15 to 30 seconds; After step S4, the following steps are also included: After the electronic lock is unlocked, the electronic lock status is periodically monitored, with an interval of 5 seconds.

5. A self-unlocking terminal for abnormal locking of a charging gun according to claim 4, characterized in that: Before step S1, the following steps are also included: Determine whether the charging pile can work normally. If so, go to step S1; otherwise, directly report the charging pile failure.

6. A self-unlocking terminal for abnormally locked charging gun according to claim 4, characterized in that: The step S1 further includes: When the electronic lock is periodically monitored to be unlocked, if a user comes to charge the new energy vehicle at this time, when it is detected that the user has inserted the charging gun into the charging port of the vehicle, the charging pile enters the charging process and sends a locking pulse signal to the electronic lock to lock it. When charging is completed, the non-charging state is restored and the periodic detection of the electronic lock state is re-entered; If the electronic lock is detected to be unlocked at this time, a notification is sent to the user that the charging gun can be directly unplugged from the car charging port, and the user can unplug the charging gun by himself to end the charging work. If the electronic lock is detected to be locked at this time, the subsequent self-unlocking process is entered.

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