Automatic detection method, device, equipment and medium for charging pile charging failure

Abstract

The present invention discloses an automatic detection method, device, equipment and medium for charging pile charging failure. The method includes: determining whether the charging pile is successfully connected to the charging vehicle, if not successfully connected, controlling the positive port of the charging pile power supply to send a first signal, and controlling the negative port of the charging pile power supply to send a second signal; determining the third signal received by the positive port of the charging pile power supply, and the fourth signal received by the negative port of the charging pile power supply; determining the positive port transmission time difference according to the first signal and the third signal, and determining the negative port transmission time difference according to the second signal and the fourth signal; determining the charging cable fault information of the charging pile according to the positive port transmission time difference, the negative port transmission time difference and the resistance measurement information of the positive port of the charging pile power supply and the negative port of the charging pile power supply. The present invention can quickly inform users and charging pile manufacturers of the specific causes of charging failures, speed up the time to solve the failures, and improve user satisfaction.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy charging piles, and in particular to a method, device, equipment and medium for automatically detecting charging failures of a charging pile. Background Art

[0002] With the gradual popularization of new energy vehicles, new energy charging piles have also gradually become popular, including but not limited to DC charging piles, AC charging piles and charging piles. When charging piles are charging, the cable accounts for a high proportion of the equipment utilization in the overall charging process, and because the charging cable needs to pass high voltage and high current when charging, the charging cable failure is one of the main reasons for charging failure when users use charging piles.

[0003] If users encounter problems such as being unable to charge when using charging piles to charge new energy vehicles, they will be unable to accurately determine the specific cause of the charging failure, which will cause users to become anxious and will not be conducive to the charging pile manufacturers to quickly repair the fault. Summary of the invention

[0004] The present invention provides a method, device, equipment and medium for automatically detecting charging failure of a charging pile, which solves the problem that a user cannot obtain the cause of the charging failure when charging is impossible, and can quickly inform the user and the charging pile manufacturer of the specific cause of the charging failure, speed up the fault resolution time, and improve user satisfaction.

[0005] According to one aspect of the present invention, there is provided a method for automatically detecting charging failure of a charging pile, comprising:

[0006] Determine whether the charging pile and the charging vehicle are connected successfully. If not, control the positive power port of the charging pile to send a first signal, and control the negative power port of the charging pile to send a second signal;

[0007] Determine a third signal received by the positive power port of the charging pile, and a fourth signal received by the negative power port of the charging pile;

[0008] Determine a positive port transmission time difference according to the first signal and the third signal, and determine a negative port transmission time difference according to the second signal and the fourth signal;

[0009] The charging cable fault information of the charging pile is determined according to the positive port transmission time difference, the negative port transmission time difference, and the resistance measurement information of the positive port of the charging pile power supply and the negative port of the charging pile power supply.

[0010] According to another aspect of the present invention, there is provided an automatic detection device for charging pile charging failure, comprising:

[0011] A charging pile signal sending module, used to determine whether the charging pile is successfully connected to the charging vehicle. If not, the positive power port of the charging pile is controlled to send a first signal, and the negative power port of the charging pile is controlled to send a second signal;

[0012] A charging pile signal receiving module, used to determine a third signal received by the positive power port of the charging pile, and a fourth signal received by the negative power port of the charging pile;

[0013] a transmission time difference determining module, configured to determine a positive port transmission time difference according to the first signal and the third signal, and to determine a negative port transmission time difference according to the second signal and the fourth signal;

[0014] The first charging cable fault determination module is used to determine the charging cable fault information of the charging pile according to the positive port transmission time difference, the negative port transmission time difference and the resistance measurement information of the positive port of the charging pile power supply and the negative port of the charging pile power supply.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the automatic detection method of charging pile charging failure described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the automatic detection method for charging pile charging failure described in any embodiment of the present invention when executed.

[0020] The technical solution of the embodiment of the present invention determines whether the current charging pile is connected to the charging vehicle. If not connected, it proves that the charging pile and the charging vehicle have not shaken hands. Then, the faulty cable is determined according to the transmission time difference between the sending signal and the receiving signal of different charging pile signal ports, and the cable length is automatically detected according to the logical relationship between the measured resistance of the charging pile signal port and the corresponding cable length. This solves the problem of low troubleshooting efficiency when the charging connection fails, achieves the beneficial effect of quickly informing users and charging pile manufacturers of the specific reasons for the charging failure, speeding up the fault resolution time, and improving user satisfaction.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a flow chart of a method for automatically detecting charging pile charging failures according to Embodiment 1 of the present invention;

[0024] Figure 2 is a flow chart of another automatic detection method for charging pile charging failure provided in accordance with the second embodiment of the present invention;

[0025] Figure 3 This is a timing diagram corresponding to the normal detection result of the charging cable of the charging pile;

[0026] Figure 4 It is a timing diagram corresponding to the fault of the charging cable detection result of the charging pile;

[0027] Figure 5 is a flowchart of another automatic detection method for charging pile charging failure provided in accordance with Embodiment 3 of the present invention;

[0028] Figure 6 It is a timing diagram corresponding to the fault of the charging cable detection result of the charging vehicle;

[0029] Figure 7 is a flowchart of another automatic detection method for charging pile charging failure provided according to the fourth embodiment of the present invention;

[0030] Figure 8 This is a flowchart of another automatic detection method for charging pile charging failure provided according to Embodiment 5 of the present invention;

[0031] Fig. 9 2 is a schematic diagram of the structure of an automatic detection device for charging pile charging failure provided in accordance with a sixth embodiment of the present invention;

[0032] Fig.10 It is a structural schematic diagram of an electronic device for implementing the automatic detection method of charging pile charging failure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "candidate", "target", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] Embodiment 1

[0036] Figure 1 A flowchart of a method for automatically detecting charging pile charging failure is provided for the first embodiment of the present invention. This embodiment can be applied to troubleshooting charging failures that cause failure to charge when using a charging pile to charge new energy vehicles. The method can be performed by an automatic detection device for charging pile charging failures. The automatic detection device for charging pile charging failures can be implemented in the form of hardware and / or software. The automatic detection device for charging pile charging failures can be configured in the charging pile. Figure 1 As shown, the method includes:

[0037] S110, determining whether the charging pile and the charging vehicle are successfully connected. If not, controlling the positive power port of the charging pile to send a first signal, and controlling the negative power port of the charging pile to send a second signal.

[0038] When a charging vehicle uses a charging pile to charge, it first performs a connection judgment to determine whether the current charging pile has been connected to the charging vehicle. If a handshake signal is generated, it means that the connection is successful; if no handshake signal is generated within a preset time interval, it is determined that the connection is not successful.

[0039] If the charging pile and the charging vehicle are not connected successfully, it means that the charging pile is likely to be faulty. First, the charging cable inside the charging pile should be checked for faults. The charging cable inside the charging pile may have a break point, so the length of the cable inside the charging pile is detected by sending a cable length measurement signal through the charging pile power port, and then the charging cable fault point information is determined based on the length of the charging cable.

[0040] Specifically, since each charging pile signal port is connected to the inside through a cable, each charging pile signal port sends a separate cable length measurement signal, and the charging pile signal port includes at least a charging pile power positive port and a charging pile power negative port. Among them, the first signal and the second signal are the same signal to ensure the consistency of the received signals of the two ports, so as to realize the mutual comparison of the charging pile power positive port and the charging pile power negative port. Optionally, the signal content of the first signal and the second signal can be determined according to actual conditions. For example, the first signal and the second signal can be pulse wave signals, which have high recognition and are easy to generate, thereby improving signal transmission efficiency.

[0041] S120: Determine a third signal received by the positive power port of the charging pile and a fourth signal received by the negative power port of the charging pile.

[0042] The positive port of the charging pile power supply sends a first signal and receives an echo of the first signal, and the received signal is a third signal; similarly, the negative port of the charging pile power supply sends a second signal and receives an echo of the second signal, and the received signal is a fourth signal.

[0043] Since the signal sent by the charging pile signal port is transmitted through the charging cable, the first signal sent by the positive port of the charging pile power supply and the third signal received are transmitted back and forth through the charging cable corresponding to the positive port of the charging pile power supply, and the second signal sent by the negative port of the charging pile power supply and the fourth signal received are transmitted back and forth through the charging cable corresponding to the negative port of the charging pile power supply.

[0044] S130, determining a positive port transmission time difference according to the first signal and the third signal, and determining a negative port transmission time difference according to the second signal and the fourth signal.

[0045] Since the signals sent and received by the charging pile signal port are transmitted back and forth through the charging cable, the transmission time difference determined by each port can reflect the corresponding charging cable length information.

[0046] Specifically, the positive port transmission time difference is determined according to the time difference between the start time of sending the first signal and the start time of receiving the third signal, and the positive port transmission time difference reflects the length information transmitted back and forth through the charging cable corresponding to the positive port of the charging pile power supply; the negative port transmission time difference is determined according to the time difference between the start time of sending the second signal and the start time of receiving the fourth signal, and the negative port transmission time difference reflects the length information transmitted back and forth through the charging cable corresponding to the negative port of the charging pile power supply. Optionally, the positive port transmission time difference can also be determined according to the time difference between the end time of sending the first signal and the end time of receiving the third signal, and the negative port transmission time difference can be determined according to the time difference between the end time of sending the second signal and the end time of receiving the fourth signal.

[0047] S140: Determine charging cable fault information of the charging pile according to the positive port transmission time difference, the negative port transmission time difference, and resistance measurement information of the positive power port of the charging pile and the negative power port of the charging pile.

[0048] According to the comparison result of the positive port transmission time difference and the negative port transmission time difference, it can be determined whether there is a problem with the charging cable of a port, that is, a preliminary judgment is made based on the transmission time difference. For example, if the positive port transmission time difference is the same as the negative port transmission time difference, it is determined that the charging cables of the two ports are not faulty; if the positive port transmission time difference is different from the negative port transmission time difference, it is determined that the charging cable corresponding to the port with the smaller transmission time difference may be faulty.

[0049] Since the resistance of the charging cable is proportional to its length, after the faulty port is determined based on the transmission time difference of the positive port and the transmission time difference of the negative port, the ratio of the resistance measurement information of the normal port and the resistance measurement information of the faulty port is the same as the ratio of the cable length of the normal port and the cable length of the faulty port. The cable length of the normal port can be determined based on the factory information of the charging pile, and the cable length of the faulty port can be determined based on the logical relationship between the cable resistance and the cable length. The breaking point position of the cable on the port can be determined based on the cable length, and the charging cable fault information is generated based on the breaking point position to prompt the user that the charging pile is faulty so that the user can replace the charging pile in time for charging, and the charging pile manufacturer can be prompted to quickly check the cable of the faulty port to improve the repair efficiency of the charging pile.

[0050] The technical solution of the embodiment of the present invention determines whether the current charging pile is connected to the charging vehicle. If not connected, it proves that the charging pile and the charging vehicle have not shaken hands. Then, the faulty cable is determined according to the transmission time difference between the sending signal and the receiving signal of different charging pile signal ports, and the cable length is automatically detected according to the logical relationship between the measured resistance of the charging pile signal port and the corresponding cable length. This solves the problem of low troubleshooting efficiency when the charging connection fails, achieves the beneficial effect of quickly informing users and charging pile manufacturers of the specific reasons for the charging failure, speeding up the fault resolution time, and improving user satisfaction.

[0051] Embodiment 2

[0052] Figure 2 This is a flow chart of a method for automatically detecting charging pile charging faults provided in the second embodiment of the present invention. This embodiment describes step 140 in the above embodiment in detail, that is, further refines the process of determining the charging cable fault information. Figure 2 As shown, the method includes:

[0053] S210, determining whether the charging pile and the charging vehicle are successfully connected. If not, controlling the positive power port of the charging pile to send a first signal, and controlling the negative power port of the charging pile to send a second signal.

[0054] S220: Determine a third signal received by the positive power port of the charging pile and a fourth signal received by the negative power port of the charging pile.

[0055] S230, determining a positive port transmission time difference according to the first signal and the third signal, and determining a negative port transmission time difference according to the second signal and the fourth signal.

[0056] In a feasible embodiment, the first signal and the second signal are pulse wave signals, the pulse wave signal includes at least two pulse waves, and the level values ​​and high level time intervals of the at least two pulse waves are different;

[0057] Accordingly, S230 includes:

[0058] The first transmission time difference of the positive port is determined according to the rising edge of the starting pulse wave in the first signal and the rising edge of the starting pulse wave in the third signal; the second transmission time difference of the positive port is determined according to the falling edge of the ending pulse wave in the first signal and the falling edge of the ending pulse wave in the third signal; the third transmission time difference of the negative port is determined according to the rising edge of the starting pulse wave in the second signal and the rising edge of the starting pulse wave in the fourth signal; the fourth transmission time difference of the negative port is determined according to the falling edge of the ending pulse wave in the second signal and the falling edge of the ending pulse wave in the fourth signal.

[0059] In order to increase the complexity of the signal sent by the charging pile signal port, avoid the phenomenon of signal transmission being interfered by the outside world, improve the accuracy of the judgment based on the received signal, and at the same time ensure that the signal is easy to generate, so as to improve the accuracy and efficiency of signal transmission, in an embodiment of the present invention, multiple pulse waves are used as the signal sent by the charging pile signal port, and the high level value and high level time interval of each pulse wave are different. Exemplarily, the first signal and the second signal are pulse wave signals including two pulse waves, wherein the level value of the first pulse wave is less than the level value of the second pulse wave, and the high level duration of the first pulse wave is less than the second pulse wave.

[0060] Similarly, in order to improve the accuracy of the measurement result of the charging cable length determined based on the transmission time difference, multiple transmission time differences are determined based on the multiple pulse waves in the first signal and the second signal, that is, the transmission time difference of the positive port includes multiple transmission time differences determined based on the corresponding pulse waves in the transmitted signal and the received signal, and the transmission time difference of the negative port includes multiple transmission time differences determined based on the corresponding pulse waves in the transmitted signal and the received signal.

[0061] Exemplarily, taking the pulse wave signal in which the first signal and the second signal include two pulse waves as an example, the positive port of the charging pile power supply sends a pulse wave signal, i.e., the first signal, and receives a returned pulse wave signal, i.e., the third signal, after a period of time, and the waveforms of the first signal and the second signal are consistent. The positive port of the charging pile power supply is calculated based on the rising edge of the start signal, and the corresponding pulse wave signal level value is low, and the high level time interval is short. The corresponding time point corresponding to the rising edge of the start pulse wave is found from the first signal and the third signal respectively, and the first transmission time difference is determined to be △T1 according to the difference between the two time points; the positive port of the charging pile power supply is calculated based on the falling edge of the end signal, and the corresponding pulse wave signal level value is high, and the high level time interval is long. The corresponding time point corresponding to the falling edge of the end pulse wave is found from the first signal and the third signal respectively, and the first transmission time difference is determined to be △T2 according to the difference between the two time points.

[0062] The negative pole port of the charging pile power supply sends a pulse wave signal, i.e., the second signal, and receives a returned pulse wave signal, i.e., the fourth signal, after a period of time. The waveforms of the second signal and the fourth signal are consistent. The negative pole port of the charging pile power supply is calculated based on the rising edge of the start signal. The corresponding pulse wave signal level value is low, and the high level time interval is short. The corresponding time point corresponding to the rising edge of the start pulse wave is found from the second signal and the fourth signal respectively, and the third transmission time difference is determined to be △T3 according to the difference between the two time points; the negative pole port of the charging pile power supply is calculated based on the falling edge of the end signal. The corresponding pulse wave signal level value is high, and the high level time interval is long. The corresponding time point corresponding to the falling edge of the end pulse wave is found from the second signal and the fourth signal respectively, and the fourth transmission time difference is determined to be △T4 according to the difference between the two time points.

[0063] S240: Determine the faulty port according to the matching results of the positive port transmission time difference, the negative port transmission time difference and the normal charging pile transmission time difference.

[0064] Among them, the normal charging pile transmission time difference is affected by the length of the cable in the charging pile. It can be pre-determined according to the charging pile configuration information when the charging pile leaves the factory, or it can be determined by sending a corresponding pulse wave signal through the charging pile signal port during the normal use of the charging pile. Optionally, the normal charging pile transmission time difference can be a normal charging pile transmission time difference range, and the transmission time difference within this range can be considered normal. If the cable fails, the signal sent by the charging pile signal port will return after not transmitting the normal length, and the transmission time difference will be less than the normal charging pile transmission time difference.

[0065] Therefore, the positive port transmission time difference is compared with the normal charging pile transmission time difference. If the difference between the positive port transmission time difference and the normal charging pile transmission time difference is less than or equal to the preset difference threshold, it is determined that the positive port transmission time difference is normal, that is, the cable length transmitted by the first signal is normal, and the charging pile power positive port is a normal port; if the difference between the positive port transmission time difference and the normal charging pile transmission time difference is greater than the preset difference threshold, it is determined that the positive port transmission time difference is abnormal, that is, the cable length transmitted by the first signal is abnormal, and the charging pile power positive port is a faulty port. Similarly, the negative port transmission time difference is judged, and then it is determined whether the charging pile power negative port is a normal port or a faulty port.

[0066] Exemplarily, if the positive port transmission time difference includes the first transmission time difference and the second transmission time difference, and the difference between any one of the first transmission time difference and the second transmission time difference and the normal charging pile transmission time difference is greater than a preset difference threshold, then the positive port transmission time difference is determined to be abnormal, and the positive port of the charging pile power supply is a faulty port; if the difference between any one of the first transmission time difference and the second transmission time difference and the normal charging pile transmission time difference is less than or equal to the preset difference threshold, then the positive port transmission time difference is determined to be normal, and the positive port of the charging pile power supply is a normal port. Similarly, if the negative port transmission time difference includes the third transmission time difference and the fourth transmission time difference, and the difference between any one of the third transmission time difference and the fourth transmission time difference and the normal charging pile transmission time difference is greater than the preset difference threshold, then the negative port transmission time difference is determined to be abnormal, and the negative port of the charging pile power supply is a faulty port. Figure 3 The figure shows a timing diagram corresponding to the normal detection result of the charging cable of the charging pile. The Clock signal provides a clock signal for sending the first signal and the second signal. △T1, △T2, △T3 and △T4 are normal, and the cable length is determined to be normal.

[0067] S250: Determine resistance prediction information of the faulty port according to the transmission time difference of the faulty port, the transmission time difference of the normal charging pile, the cable length of the normal charging pile, and the cable port resistance of the normal charging pile.

[0068] Among them, the normal charging pile cable length and the normal charging pile cable port resistance can be determined according to the charging pile factory configuration information. For example, the normal charging pile cable port resistance can be determined according to the resistance measurement information of the above-mentioned normal port. If there is no normal port in the above-mentioned determined ports, it can be determined according to the charging pile factory configuration information.

[0069] According to the logical relationship between cable resistance and cable length, it can be determined that the ratio of the resistance of the faulty port to the resistance of the normal port is the same as the ratio of the cable length of the faulty port to the cable length of the normal port. According to the logical relationship between the transmission time difference and the cable length, it can be determined that the ratio of the transmission time difference of the faulty port to the transmission time difference of the normal port is the same as the ratio of the cable length of the faulty port to the cable length of the normal port. According to the above logical relationship, the cable length of the faulty port can be determined according to the transmission time difference of the faulty port, the transmission time difference of the normal charging pile, and the cable length of the normal charging pile, and then the resistance prediction information of the faulty port can be determined according to the cable length of the faulty port, the cable length of the normal charging pile, and the cable port resistance of the normal charging pile.

[0070] S260: Determine charging cable fault information according to resistance measurement information and resistance prediction information of the faulty port.

[0071] Since the resistance prediction information of the faulty port is determined based on the transmission time difference of the faulty port, the transmission time difference of the normal charging pile, the cable length of the normal charging pile, and the cable port resistance of the normal charging pile, it is based on the abnormal cable length of the faulty port. Therefore, if the actual resistance measurement information of the faulty port is the same as the resistance prediction information, it is determined that the aforementioned premise verification is correct, that is, the cable length determination of the faulty port is correct, and the charging line fault information is generated based on the cable length of the faulty port to prompt the user of the charging pile fault and inform the charging pile manufacturer of the fault point location. If the actual resistance measurement information of the faulty port is different from the resistance prediction information, it is determined that the aforementioned premise verification is wrong, that is, the cable length determination of the faulty port is wrong, and the charging cable fault information is regenerated, such as information such as unclear fault, waiting for verification by the staff.

[0072] In a feasible embodiment, S250 includes:

[0073] Determine the predicted break point position of the cable at the fault port based on the transmission time difference of the fault port, the transmission time difference of the normal charging pile, and the cable length of the normal charging pile;

[0074] Determine the resistance prediction information of the fault port according to the predicted breaking point position, the normal charging pile cable length and the normal charging pile cable port resistance;

[0075] Accordingly, the charging cable fault information is determined according to the resistance measurement information and the resistance prediction information of the faulty port, including:

[0076] If the resistance measurement information and the resistance prediction information of the faulty port are the same, the charging cable fault information is generated according to the predicted break point position of the cable of the faulty port.

[0077] Specifically, because the signal transmission on the cable is bidirectional, the ratio of the normal charging pile cable length and the predicted break point position of the fault port cable is equal to half of the ratio of the normal charging pile transmission time difference and the fault port transmission time difference. Based on this relationship, the predicted break point position of the fault port cable is determined according to the fault port transmission time difference, the normal charging pile transmission time difference and the normal charging pile cable length; the ratio of the normal charging pile cable length and the predicted break point position of the fault port cable is equal to the ratio of the normal charging pile cable port resistance and the fault port resistance prediction information. Based on this relationship, the fault port resistance prediction information is determined according to the predicted break point position, the normal charging pile cable length and the normal charging pile cable port resistance. Among them, the normal charging pile transmission time difference can be determined according to the normal port transmission time difference, and the normal charging pile cable port resistance can be determined according to the normal port resistance measurement information. If there is no normal port, it can be determined according to the charging pile factory configuration information.

[0078] For example, Figure 4The figure shows the timing diagram corresponding to the fault detection result of the charging pile charging cable. The Clock signal provides a clock signal to the first signal and the second signal. △T1 and △T2 are both within the normal value range, △T3 and △T4 are both smaller than the normal value range, and the faulty port is the negative power supply port of the charging pile, that is, the negative power supply port of the charging pile is suspected to have a breakpoint problem. Under normal circumstances, the normal charging pile cable length of the positive power port (DC+) and the negative power port (DC-) of the charging pile is preset to be HH, and the normal charging pile cable port resistance corresponding to the normal charging pile cable length when the positive power port (DC+) and the negative power port (DC-) of the charging pile is normal is RT; because the transmission time difference of the DC+ port detected above is normal, the DC+ port resistance is RTDC+=RT; at this time, the resistance information of the DC- port is detected, that is, the resistance measurement information of the faulty port is RT1DC-; the predicted breaking point position of the DC- port cable is preliminarily judged to be HHDC-=△T3 / △T1 / 2*HH; the resistance prediction information of the faulty port is RT2DC- = HHDC- / HH*RT; the values ​​of RT1DC- and RT2DC- are obtained. If the resistance measurement information of the faulty port is the same as the resistance prediction information, it is proved that the predicted breaking point position of the DC- cable does have a fault problem, and the charging cable fault information is generated according to the predicted breaking point position of the faulty port cable for reporting and processing.

[0079] The technical solution of the embodiment of the present invention determines the resistance prediction information of the faulty port through the logical relationship between the transmission time difference, the cable length and the resistance, and then determines the charging cable fault information according to the resistance measurement information and the resistance prediction information of the faulty port, thereby improving the accuracy of determining the charging cable fault information and thus speeding up the fault resolution time.

[0080] Embodiment 3

[0081] Figure 5 This is a flowchart of another automatic detection method for charging pile charging failure provided by the third embodiment of the present invention. This embodiment further describes the fault detection method after the charging pile and the charging vehicle are successfully connected in the above embodiment. Figure 5 As shown, the method includes:

[0082] S510, determining whether the charging pile and the charging vehicle are successfully connected. If the connection is successful, controlling at least two charging pile signal ports to send a first vehicle cable measurement signal, and determining a second vehicle cable measurement signal received by the charging pile signal port.

[0083] If the charging pile is successfully connected to the charging vehicle, it proves that there is no problem with the charging cable inside the charging pile, and there is no need to measure the length of the charging cable of the charging pile. At this time, the cause of the charging failure is most likely caused by the charging vehicle. Therefore, it is prioritized to detect the length of the vehicle cable. If a charging failure occurs later, the fault information can be directly determined based on the pre-detected vehicle cable length detection result.

[0084] When detecting the length of the vehicle cable, at least two charging pile signal ports send a first vehicle cable measurement signal, and determine the received second vehicle cable measurement signal. Among them, the charging pile signal port includes at least two of the following: a charging pile power positive port (DC+), a charging pile power negative port (DC-), a charging pile can-h port (S+), a charging can-l port (S-), a low-voltage control power positive port (A+), a low-voltage control power negative port (A-), a ground port (PE), a charging pile connection confirmation port (CC1) and a vehicle connection confirmation port (CC2). The waveform of the first vehicle cable measurement signal is the same as the first signal in the above embodiment. For example, if the connection is successful, the charging pile power positive port is controlled to send a positive first vehicle cable measurement signal, and the charging pile power negative port is controlled to send a negative first vehicle cable measurement signal, and the positive second vehicle cable measurement signal received by the charging pile power positive port and the negative second vehicle cable measurement signal received by the charging pile power negative port are determined.

[0085] For example, after the user inserts the charging gun into the charging vehicle, a physical connection signal is generated. After the charging pile confirms the physical connection through handshake, the charging module of the charging pile does not output energy at this time. The cable length detection is performed first, so as to detect the cable length inside the charging vehicle. The length of the charging cable is determined by the transmission time difference between the signals sent and received by the charging pile signal port.

[0086] S520: Determine a vehicle cable measurement transmission time difference according to the first vehicle cable measurement signal and the second vehicle cable measurement signal, and determine a vehicle cable measurement length corresponding to the charging pile signal port according to the vehicle cable measurement transmission time difference.

[0087] Since the charging pile and the charging vehicle are successfully connected, the transmission time difference and cable length information of the charging cable inside the charging pile are predetermined, such as the normal charging pile transmission time difference and the normal charging pile cable length in the above embodiment. According to the logical relationship between the transmission time difference and the cable length, it can be determined that the ratio of the vehicle cable measured transmission time difference at the charging pile signal port and the normal charging pile transmission time difference of the charging pile is the same as the ratio of the total cable measurement length at the charging pile signal port and the normal charging pile cable length. According to this logical relationship, the total cable measurement length corresponding to the charging pile signal port can be determined according to the vehicle cable measured transmission time difference, the normal charging pile transmission time difference and the normal charging pile cable length. Since the vehicle and the charging pile are successfully connected at this time, the distance transmitted by the first vehicle cable measurement signal and the second vehicle cable measurement signal is the charging cable of the charging pile combined with the vehicle cable of the charging vehicle. Therefore, the cable length obtained according to the above logical relationship is the sum of the charging cable of the charging pile combined with the vehicle cable of the charging vehicle. The vehicle cable measurement length corresponding to the charging pile signal port can be obtained by subtracting the normal charging pile cable length from the total cable measurement length.

[0088] Exemplarily, the first vehicle cable measurement signal can be a pulse wave signal composed of multiple pulse waves like the first signal, and the high level value and high level time interval of each pulse wave are different. Correspondingly, the vehicle cable measurement transmission time difference also includes multiple ones. Referring to the determination of the first transmission time difference and the second transmission time difference in the above embodiment, no further description is given here. The vehicle cable measurement length corresponding to the charging pile signal port can be determined based on multiple transmission time differences, and the average value of the vehicle cable measurement length calculated based on the multiple transmission time differences is used as the final vehicle cable measurement length.

[0089] In a feasible embodiment, S520 includes:

[0090] Determine the normal charging pile transmission time difference;

[0091] The vehicle cable measurement length corresponding to the charging pile signal port is determined according to the normal charging pile transmission time difference, the vehicle cable measurement transmission time difference and the normal charging pile cable length.

[0092] According to the logical relationship between the transmission time difference and the cable length, it can be determined that the ratio of the vehicle cable measured transmission time difference at the charging pile signal port and the normal charging pile transmission time difference of the charging pile is the same as the ratio of the total cable measurement length of the charging pile signal port and the normal charging pile cable length. According to this logical relationship, the total cable measurement length corresponding to the charging pile signal port can be determined according to the vehicle cable measured transmission time difference, the normal charging pile transmission time difference and the normal charging pile cable length. The vehicle cable measurement length corresponding to the charging pile signal port can be obtained by subtracting the normal charging pile cable length from the total cable measurement length.

[0093] S530: Determine charging cable fault information according to the measured length of the vehicle cable corresponding to the charging pile signal port, the normal charging pile cable port resistance, and the resistance measurement information of the charging pile signal port.

[0094] Since the vehicle and the charging pile are successfully connected at this time, the transmission distance of the first vehicle cable measurement signal and the second vehicle cable measurement signal is the charging cable of the charging pile combined with the vehicle cable of the charging vehicle. Under normal circumstances, the resistance measurement information of the charging pile signal port should be the charging pile cable port resistance plus the charging vehicle cable resistance. The charging pile cable port resistance can be determined based on the predetermined normal charging pile cable port resistance.

[0095] Determine the logical relationship between cable length and resistance, and then determine whether there is a breakpoint in the vehicle charging cable based on the measured length of the vehicle cable corresponding to the charging pile signal port, the normal charging pile cable port resistance, and the resistance measurement information of the charging pile signal port. If so, generate charging cable fault information based on the vehicle charging cable breakpoint information.

[0096] In a feasible embodiment, S530 includes:

[0097] Determine a faulty port and a normal port from the charging pile signal port according to a comparison result of the measured length of the vehicle cable corresponding to the charging pile signal port and the normal length of the corresponding historically measured vehicle cable;

[0098] Determine the vehicle cable attribute parameters based on the resistance measurement information of the normal port, the normal charging pile cable port resistance and the vehicle cable measurement length corresponding to the normal port;

[0099] Determine the first predicted break point position of the faulty port in the vehicle cable according to the resistance measurement information of the faulty port, the normal charging pile cable port resistance and the vehicle cable attribute parameters;

[0100] Charging cable fault information is generated according to the first predicted break point position and the measured length of the vehicle cable.

[0101] Among them, the historically measured normal length of vehicle cables is counted based on the historical measurement data of successfully charged vehicles. Specifically, during the handshake process between the charging vehicle and the charging pile, the charging pile can obtain vehicle information, such as vehicle brand and model information; thus, the table content is established based on the vehicle information and the measured normal length of the vehicle cable. For the same model, the cable length information inside the new energy vehicle is the same. Exemplarily, the charging pile performs a cable length detection before each charging to obtain the cable length inside the charging vehicle. If the charging is successful at this time, it is considered that the charging path is unobstructed, and the cable length inside the charging vehicle is recorded by vehicle brand, vehicle model, and signal port name, as shown in the following table.

[0102] Table 1

[0103]

[0104] According to the charging pile signal port and vehicle information, the corresponding historical measured vehicle cable normal length is found from the table pre-stored in the charging pile. If the difference between the vehicle cable measured length corresponding to the current charging pile signal port and the historical measured vehicle cable normal length is less than or equal to the preset length threshold, the charging pile signal port is determined to be a normal port; if the difference between the vehicle cable measured length corresponding to the current charging pile signal port and the historical measured vehicle cable normal length is greater than the preset length threshold, the charging pile signal port is determined to be a faulty port. As shown in Table 1, DC+ is a normal port and DC- is an abnormal port.

[0105] Since the charging pile and the charging vehicle are successfully connected at this time, the resistance measurement information of the charging pile signal port is equal to the resistance of the charging pile charging cable + the resistance of the charging vehicle cable is equal to the normal charging pile cable port resistance + ρ * H / A, where H represents the length of the charging cable of the normal charging vehicle (unit: meter), ρ is the resistivity of the cable conductor (unit: ohm·meter Ω·m), and A is the cable cross-sectional area (unit: square meter m^2).

[0106] Based on the above logical relationship, the vehicle cable attribute parameter value is determined according to the resistance measurement information of the normal port, the normal charging pile cable port resistance and the vehicle cable measurement length corresponding to the normal port. The vehicle cable attribute parameter is ρ / A, which is a fixed attribute value. For example, RT1DC+= RT + ρ * H13 / A, RT1DC represents the resistance measurement information of the positive port of the charging pile power supply, RT is the normal charging pile cable port resistance, and H13 is the vehicle cable measurement length corresponding to the positive port of the charging pile power supply obtained above.

[0107] After determining the vehicle cable attribute parameter value, based on the above logical relationship, according to the resistance measurement information of the faulty port, the normal charging pile cable port resistance and the vehicle cable attribute parameter, the first predicted break point position of the faulty port in the vehicle cable is determined. For example, RT1DC-=RT + ρ * H14a / A, where RT1DC- represents the resistance measurement information of the negative pole port of the charging pile power supply, and the resistance measurement information includes the resistance value corresponding to the total length of the charging pile charging cable length and the internal length of the charging vehicle, RT is the normal charging pile cable port resistance, and since the charging pile and the charging vehicle are successfully connected at this time, the charging pile cable length is considered to be normal, and H14a is the first predicted break point position of the faulty port in the vehicle cable.

[0108] If the first predicted break point position of the fault port in the vehicle cable is the same as the aforementioned determined vehicle cable measurement length, charging cable fault information is generated according to the first predicted break point position; if they are not the same, the charging cable fault information is re-determined.

[0109] like Figure 6 The figure shows the timing diagram corresponding to the fault detection result of the charging cable of the charging vehicle. △T5 and △T6 are both within the normal value range, and △T7 and △T8 are both less than the normal value range. It is determined that DC+ is a normal port and DC- is an abnormal port. The second predicted breakpoint position of the faulty port is obtained according to the measured transmission time difference of the vehicle cable of the normal port and the measured transmission time difference of the vehicle cable of the abnormal port, the normal charging pile cable length and the measured length of the vehicle cable corresponding to the normal port. If the first predicted breakpoint position is the same as the second predicted breakpoint position, the charging cable fault information is generated according to the first predicted breakpoint position; if they are not the same, the charging cable fault information is re-determined. For example, HH+H14b = △T7 / △T5 / 2*(HH+H13), H14b is the second predicted breakpoint position, △T7 is the measured transmission time difference of the vehicle cable of the abnormal port, △T5 is the measured transmission time difference of the vehicle cable of the normal port, and H13 is the measured length of the vehicle cable corresponding to the normal port.

[0110] The technical solution of the embodiment of the present invention determines whether the current charging pile is connected to the charging vehicle. If the connection proves that the charging pile and the charging vehicle have successfully shaken hands, the vehicle cable length is determined according to the transmission time difference between the sending signal and the receiving signal of different charging pile signal ports, and the cable length is reconfirmed according to the logical relationship between the measured resistance of the charging pile signal port and the corresponding cable length, thereby ensuring the accuracy of the charging cable fault information, solving the problem of low troubleshooting efficiency when the charging connection fails, and achieving the beneficial effect of quickly informing users and charging pile manufacturers of the specific reasons for the charging failure, accelerating the fault resolution time, and improving user satisfaction.

[0111] The technical solution of the embodiment of the present invention determines whether the current charging pile is connected to the charging vehicle; if not, it proves that the charging pile and the charging vehicle have not shaken hands, and then the charging cable in the charging pile is automatically detected. If it is connected, it proves that the charging pile and the charging vehicle have shaken hands successfully, and then the problem point in the faulty physical path is determined by analyzing the overall charging circuit of the charging pile + the internal cables of the charging vehicle, so that users and charging pile manufacturers can quickly know the reason for the failure to charge, speed up the problem solving time, and improve customer satisfaction.

[0112] Embodiment 4

[0113] Figure 7This is a flowchart of a method for automatically detecting charging pile charging faults provided by the fourth embodiment of the present invention. This embodiment performs a pre-check before determining the charging cable fault information in the above embodiment to improve the detection efficiency. Figure 7 As shown, the method includes:

[0114] S710: Control the charging pile to send a charging pile link measurement signal to the charging gun socket port.

[0115] First, the charging pile end is controlled to actively send a charging pile link measurement signal to the charging gun socket port, so as to predict the cable link inside the charging pile. The charging pile link measurement signal may be a pulse wave signal, which may be determined according to the waveform of the first signal.

[0116] S720: If the charging gun socket port receives the charging pile link measurement signal, the charging gun socket port sends a response signal to the charging pile, and sends a vehicle link measurement signal to the charging vehicle, and determines the vehicle cable measurement length according to the received signal of the vehicle link measurement signal.

[0117] If the charging gun socket port receives the charging pile link measurement signal, proving that the internal link of the charging pile is normal, the charging gun socket port responds to the charging pile, informing it that the cable link between the charging pile and the charging gun socket is unobstructed.

[0118] At the same time, the charging gun socket port sends a vehicle link measurement signal to the charging vehicle, and determines the vehicle cable measurement length according to the received signal of the vehicle link measurement signal. The specific determination method can refer to the above embodiment and will not be repeated here.

[0119] The vehicle link measurement signal is a pulse wave signal and can be determined according to the waveform of the first vehicle cable measurement signal.

[0120] S730: If the charging gun socket port does not receive the charging pile link measurement signal, continue to control the charging pile power positive port to send a first signal, and control the charging pile power negative port to send a second signal, so as to determine the charging cable fault information of the charging pile.

[0121] If the charging gun socket port does not receive the charging pile link measurement signal, it proves that the internal link of the charging pile fails, then the charging pile power positive port is controlled to send a first signal, and the charging pile power negative port is controlled to send a second signal to determine the charging cable fault information of the charging pile, so as to determine the charging cable fault information of the charging pile according to the echo signal of the first signal and the second signal. The specific determination process can refer to the above embodiment, which will not be repeated here.

[0122] The technical solution of the embodiment of the present invention is to identify the pulse wave signal from the charging pile through the charging gun socket port, give the charging pile a response reply to determine the link between the charging pile and the charging gun socket port; and send a pulse wave signal from the charging gun socket port to the charging vehicle to determine whether the cable length in the charging vehicle is normal. The pulse wave signal is output from the charging pile. The longer the cable, the greater the attenuation. By using the charging gun socket port in the embodiment of the present invention as an intermediate port, the attenuation of the pulse wave signal can be reduced and the accuracy of the cable length measurement can be improved. At the same time, through the pre-check operation of the embodiment of the present invention, the efficiency of determining whether the internal link of the charging pile is smooth is improved.

[0123] Embodiment 5

[0124] Figure 8 This is a flowchart of a method for automatically detecting charging pile charging faults provided in Embodiment 5 of the present invention. This embodiment performs a pre-check before determining the charging cable fault information in the above embodiment to improve the detection efficiency. Figure 8 As shown, the method includes:

[0125] S810. Control the charging gun socket port to send a charging pile link measurement signal to the charging pile, and send a vehicle link measurement signal to the charging vehicle.

[0126] The charging gun socket port is controlled to actively send the charging pile link measurement signal to the charging pile end, and actively send the vehicle link measurement signal to the charging vehicle to improve the detection efficiency. Among them, the charging pile link measurement signal and the vehicle link measurement signal are pulse wave signals.

[0127] S820: Determine a vehicle cable measurement length according to a received signal of a vehicle link measurement signal.

[0128] The vehicle cable measurement length is determined according to the received signal of the vehicle link measurement signal. The specific determination method can refer to the above embodiment and will not be described in detail here.

[0129] S830: If the charging gun socket port receives a charging pile link measurement response signal sent by the charging pile, it is determined that the internal cable link of the charging pile is normal.

[0130] If the charging pile receives the charging pile link measurement signal, it proves that the internal link of the charging pile is normal. Then the charging pile sends a charging pile link measurement response signal to the charging gun socket port to respond, and confirms that the internal cable link of the charging pile is normal.

[0131] S840: Otherwise, continue to control the positive power port of the charging pile to send a first signal, and control the negative power port of the charging pile to send a second signal, so as to determine the charging cable fault information of the charging pile.

[0132] If the charging gun socket port does not receive the charging pile link measurement response signal sent by the charging pile within the preset time interval, proving that the internal link of the charging pile fails, the charging pile power positive port is controlled to send a first signal, and the charging pile power negative port is controlled to send a second signal to determine the charging cable fault information of the charging pile, so as to determine the charging cable fault information of the charging pile according to the echo signal of the first signal and the second signal. The specific determination process can refer to the above embodiment, which will not be repeated here.

[0133] The technical solution of the embodiment of the present invention sends a signal to the charging pile and the charging vehicle through the charging gun socket port to determine the link between the charging pile and the charging gun socket port, and whether the cable length in the charging vehicle is normal. Outputting a pulse wave signal from the charging gun socket port reduces the length of the cable through which the signal is transmitted, thereby reducing signal attenuation. By using the charging gun socket port as the signal sender in the embodiment of the present invention, the pulse wave signal attenuation can be reduced and the accuracy of cable length measurement can be improved. At the same time, through the pre-check operation of the embodiment of the present invention, the efficiency of determining whether the internal link of the charging pile is smooth is improved.

[0134] Embodiment 6

[0135] Fig. 9 This is a schematic diagram of the structure of an automatic detection device for charging pile charging failure provided by the sixth embodiment of the present invention. Fig. 9 As shown, the device comprises:

[0136] The charging pile signal sending module 910 is used to determine whether the charging pile is successfully connected to the charging vehicle. If the connection is not successful, the positive terminal of the charging pile power supply is controlled to send a first signal, and the negative terminal of the charging pile power supply is controlled to send a second signal;

[0137] A charging pile signal receiving module 920, used to determine the third signal received by the positive power port of the charging pile, and the fourth signal received by the negative power port of the charging pile;

[0138] A transmission time difference determination module 930, configured to determine a positive port transmission time difference according to the first signal and the third signal, and to determine a negative port transmission time difference according to the second signal and the fourth signal;

[0139] The first charging cable fault determination module 940 is used to determine the charging cable fault information of the charging pile according to the positive port transmission time difference, the negative port transmission time difference and the resistance measurement information of the positive power port of the charging pile and the negative power port of the charging pile.

[0140] The technical solution of the embodiment of the present invention determines whether the current charging pile is connected to the charging vehicle. If not connected, it proves that the charging pile and the charging vehicle have not shaken hands. Then, the faulty cable is determined according to the transmission time difference between the sending signal and the receiving signal of different charging pile signal ports, and the cable length is automatically detected according to the logical relationship between the measured resistance of the charging pile signal port and the corresponding cable length. This solves the problem of low troubleshooting efficiency when the charging connection fails, achieves the beneficial effect of quickly informing users and charging pile manufacturers of the specific reasons for the charging failure, speeding up the fault resolution time, and improving user satisfaction.

[0141] Optionally, the first charging cable fault determination module includes:

[0142] A fault port determination unit, configured to determine a fault port according to a matching result of the positive port transmission time difference, the negative port transmission time difference and the normal charging pile transmission time difference;

[0143] A resistance measurement unit, configured to determine resistance prediction information of the faulty port according to the transmission time difference of the faulty port, the transmission time difference of the normal charging pile, the cable length of the normal charging pile, and the cable port resistance of the normal charging pile;

[0144] A fault information determining unit is used to determine the charging cable fault information according to the resistance measurement information of the fault port and the resistance prediction information.

[0145] Optional resistance measurement unit, specifically used for:

[0146] Determine the predicted break point position of the cable of the fault port according to the transmission time difference of the fault port, the transmission time difference of the normal charging pile and the cable length of the normal charging pile;

[0147] Determine the resistance prediction information of the fault port according to the predicted breaking point position, the normal charging pile cable length and the normal charging pile cable port resistance;

[0148] Accordingly, the fault information determination unit is specifically used for:

[0149] If the resistance measurement information of the faulty port is the same as the resistance prediction information, the charging cable fault information is generated according to the predicted break point position of the cable of the faulty port.

[0150] Optionally, the first signal and the second signal are pulse wave signals, the pulse wave signal includes at least two pulse waves, and the level values ​​and high level time intervals of the at least two pulse waves are different;

[0151] Accordingly, the transmission time difference determination module is specifically used for:

[0152] Determine a first transmission time difference of the positive port according to a rising edge of a starting pulse wave in the first signal and a rising edge of a starting pulse wave in the third signal;

[0153] Determine a second transmission time difference of the positive port according to the falling edge of the ending pulse wave in the first signal and the falling edge of the ending pulse wave in the third signal;

[0154] Determine a third transmission time difference of the negative port according to a rising edge of a starting pulse wave in the second signal and a rising edge of a starting pulse wave in the fourth signal;

[0155] A fourth transmission time difference of the negative port is determined according to a falling edge of an end pulse wave in the second signal and a falling edge of an end pulse wave in the fourth signal.

[0156] Optionally, the device further comprises:

[0157] A vehicle signal sending module, used to determine whether the charging pile and the charging vehicle are successfully connected. If the connection is successful, control at least two charging pile signal ports to send a first vehicle cable measurement signal, and determine a second vehicle cable measurement signal received by the charging pile signal port;

[0158] A vehicle cable measurement module, configured to determine a vehicle cable measurement transmission time difference according to the first vehicle cable measurement signal and the second vehicle cable measurement signal, and determine a vehicle cable measurement length corresponding to the charging pile signal port according to the vehicle cable measurement transmission time difference;

[0159] The second charging cable fault determination module is used to determine the charging cable fault information according to the measured length of the vehicle cable corresponding to the charging pile signal port, the resistance of the normal charging pile cable port and the resistance measurement information of the charging pile signal port.

[0160] Optionally, the second charging cable fault determination module is specifically configured to:

[0161] Determine a faulty port and a normal port from the charging pile signal port according to a comparison result of a measured length of a vehicle cable corresponding to the charging pile signal port and a corresponding normal length of a vehicle cable measured in history;

[0162] Determine the vehicle cable attribute parameters according to the resistance measurement information of the normal port, the normal charging pile cable port resistance and the vehicle cable measurement length corresponding to the normal port;

[0163] Determine a first predicted break point position of the fault port in the vehicle cable according to the resistance measurement information of the fault port, the resistance of the normal charging pile cable port and the vehicle cable attribute parameter;

[0164] The charging cable fault information is generated according to the first predicted break point position and the measured length of the vehicle cable.

[0165] Optional vehicle cable measurement module, specifically used for:

[0166] Determine the normal charging pile transmission time difference;

[0167] The vehicle cable measurement length corresponding to the charging pile signal port is determined according to the normal charging pile transmission time difference, the vehicle cable measurement transmission time difference and the normal charging pile cable length.

[0168] Optionally, the device further includes a first prediction module, configured to:

[0169] Before determining whether the charging pile is successfully connected to the charging vehicle, control the charging pile to send a charging pile link measurement signal to the charging gun socket port;

[0170] If the charging gun socket port receives the charging pile link measurement signal, the charging gun socket port sends a response signal to the charging pile, and sends a vehicle link measurement signal to the charging vehicle, and determines the vehicle cable measurement length according to the received signal of the vehicle link measurement signal;

[0171] If the charging gun socket port does not receive the charging pile link measurement signal, it continues to control the charging pile power positive port to send a first signal, and controls the charging pile power negative port to send a second signal, so as to determine the charging cable fault information of the charging pile.

[0172] Optionally, the device further includes a second prediction module, configured to:

[0173] Before determining whether the charging pile and the charging vehicle are successfully connected, control the charging gun socket port to send a charging pile link measurement signal to the charging pile, and send a vehicle link measurement signal to the charging vehicle;

[0174] determining a vehicle cable measurement length based on a received signal of the vehicle link measurement signal;

[0175] If the charging gun socket port receives a charging pile link measurement response signal sent by the charging pile, it is determined that the internal cable link of the charging pile is normal;

[0176] Otherwise, continue to control the positive power port of the charging pile to send a first signal, and control the negative power port of the charging pile to send a second signal, so as to determine the charging cable fault information of the charging pile.

[0177] The automatic detection device for charging pile charging failure provided in the embodiment of the present invention can execute the automatic detection method for charging pile charging failure provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0178] The acquisition, storage, use, and processing of data in the technical solution of this application comply with the relevant provisions of national laws and regulations and do not violate public order and good morals.

[0179] Embodiment 7

[0180] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium and a computer program product.

[0181] Fig.10 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0182] like Fig.10 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. The input / output (I / O) interface 15 is also connected to the bus 14.

[0183] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0184] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as an automatic detection method for charging pile charging faults.

[0185] In some embodiments, the automatic detection method of charging pile charging failure can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the automatic detection method of charging pile charging failure described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the automatic detection method of charging pile charging failure in any other appropriate manner (for example, by means of firmware).

[0186] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific reference products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0187] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0188] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0189] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0190] The systems and techniques described herein may be implemented in a computing system that includes a backend component (e.g., as a data server), or a computing system that includes a switch component (e.g., an application server), or a computing system that includes a frontend component (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, switch components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0191] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0192] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0193] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for automatically detecting charging failure of a charging pile, characterized in that: The method includes: Determine whether the charging pile and the charging vehicle are connected successfully. If not, control the positive power port of the charging pile to send a first signal, and control the negative power port of the charging pile to send a second signal; Determine a third signal received by the positive power port of the charging pile, and a fourth signal received by the negative power port of the charging pile; Determine a positive port transmission time difference according to the first signal and the third signal, and determine a negative port transmission time difference according to the second signal and the fourth signal; Determine the charging cable fault information of the charging pile according to the positive port transmission time difference, the negative port transmission time difference, and the resistance measurement information of the positive port of the charging pile power supply and the negative port of the charging pile power supply; Wherein, determining the charging cable fault information of the charging pile according to the positive port transmission time difference, the negative port transmission time difference and the resistance measurement information of the positive port of the charging pile power supply and the negative port of the charging pile power supply includes: Determine the faulty port according to the matching results of the positive port transmission time difference, the negative port transmission time difference and the normal charging pile transmission time difference; Determine the resistance prediction information of the fault port according to the transmission time difference of the fault port, the transmission time difference of the normal charging pile, the normal charging pile cable length and the normal charging pile cable port resistance; determining charging cable fault information according to the resistance measurement information of the faulty port and the resistance prediction information; Wherein, the resistance prediction information of the faulty port is determined according to the transmission time difference of the faulty port, the transmission time difference of the normal charging pile, the cable length of the normal charging pile, and the cable port resistance of the normal charging pile, including: Determine the predicted break point position of the cable of the fault port according to the transmission time difference of the fault port, the transmission time difference of the normal charging pile and the cable length of the normal charging pile; Determine the resistance prediction information of the fault port according to the predicted breaking point position, the normal charging pile cable length and the normal charging pile cable port resistance; Correspondingly, determining the charging cable fault information according to the resistance measurement information of the faulty port and the resistance prediction information includes: If the resistance measurement information of the faulty port is the same as the resistance prediction information, the charging cable fault information is generated according to the predicted break point position of the cable of the faulty port.

2. The method according to claim 1, characterized in that: in, The first signal and the second signal are pulse wave signals, the pulse wave signal includes at least two pulse waves, and the level values ​​and high level time intervals of the at least two pulse waves are different; Correspondingly, determining the positive port transmission time difference according to the first signal and the third signal, and determining the negative port transmission time difference according to the second signal and the fourth signal, includes: Determine a first transmission time difference of the positive port according to a rising edge of a starting pulse wave in the first signal and a rising edge of a starting pulse wave in the third signal; Determine a second transmission time difference of the positive port according to the falling edge of the ending pulse wave in the first signal and the falling edge of the ending pulse wave in the third signal; Determine a third transmission time difference of the negative port according to a rising edge of a starting pulse wave in the second signal and a rising edge of a starting pulse wave in the fourth signal; A fourth transmission time difference of the negative port is determined according to a falling edge of an end pulse wave in the second signal and a falling edge of an end pulse wave in the fourth signal.

3. The method according to claim 1, characterized in that Determining whether the charging pile and the charging vehicle are successfully connected also includes: If the connection is successful, controlling at least two charging pile signal ports to send a first vehicle cable measurement signal, and determining a second vehicle cable measurement signal received by the charging pile signal port; Determine a vehicle cable measurement transmission time difference according to the first vehicle cable measurement signal and the second vehicle cable measurement signal, and determine a vehicle cable measurement length corresponding to the charging pile signal port according to the vehicle cable measurement transmission time difference; The charging cable fault information is determined according to the measured length of the vehicle cable corresponding to the charging pile signal port, the normal charging pile cable port resistance and the resistance measurement information of the charging pile signal port.

4. The method according to claim 3, characterized in that The charging cable fault information is determined according to the measured length of the vehicle cable corresponding to the charging pile signal port, the normal charging pile cable port resistance and the resistance measurement information of the charging pile signal port, including: Determine a faulty port and a normal port from the charging pile signal port according to a comparison result of a measured length of a vehicle cable corresponding to the charging pile signal port and a normal length of a corresponding historically measured vehicle cable; Determine the vehicle cable attribute parameters according to the resistance measurement information of the normal port, the normal charging pile cable port resistance and the vehicle cable measurement length corresponding to the normal port; Determine a first predicted break point position of the faulty port in the vehicle cable according to the resistance measurement information of the faulty port, the resistance of the normal charging pile cable port and the vehicle cable attribute parameter; The charging cable fault information is generated according to the first predicted break point position and the measured length of the vehicle cable.

5. The method according to claim 3 or 4, characterized in that: Determining a vehicle cable measurement transmission time difference according to the first vehicle cable measurement signal and the second vehicle cable measurement signal, and determining a vehicle cable measurement length corresponding to the charging pile signal port according to the vehicle cable measurement transmission time difference, including: Determine the normal charging pile transmission time difference; The vehicle cable measurement length corresponding to the charging pile signal port is determined according to the normal charging pile transmission time difference, the vehicle cable measurement transmission time difference and the normal charging pile cable length.

6. The method according to claim 1, characterized in that Before determining whether the charging pile is successfully connected to the charging vehicle, the method further includes: Control the charging pile to send a charging pile link measurement signal to the charging gun socket port; If the charging gun socket port receives the charging pile link measurement signal, the charging gun socket port sends a response signal to the charging pile, and sends a vehicle link measurement signal to the charging vehicle, and determines the vehicle cable measurement length according to the received signal of the vehicle link measurement signal; If the charging gun socket port does not receive the charging pile link measurement signal, it continues to control the charging pile power positive port to send a first signal, and controls the charging pile power negative port to send a second signal to determine the charging cable fault information of the charging pile.

7. The method according to claim 1, characterized in that Before determining whether the charging pile is successfully connected to the charging vehicle, the method further includes: Control the charging gun socket port to send a charging pile link measurement signal to the charging pile, and send a vehicle link measurement signal to the charging vehicle; determining a vehicle cable measurement length based on a received signal of the vehicle link measurement signal; If the charging gun socket port receives a charging pile link measurement response signal sent by the charging pile, it is determined that the internal cable link of the charging pile is normal; Otherwise, continue to control the positive power port of the charging pile to send a first signal, and control the negative power port of the charging pile to send a second signal, so as to determine the charging cable fault information of the charging pile.

8. An automatic detection device for charging pile charging failure, characterized in that: The device includes: A charging pile signal sending module, used to determine whether the charging pile is successfully connected to the charging vehicle. If not, the positive power port of the charging pile is controlled to send a first signal, and the negative power port of the charging pile is controlled to send a second signal; A charging pile signal receiving module, used to determine a third signal received by the positive power port of the charging pile, and a fourth signal received by the negative power port of the charging pile; a transmission time difference determining module, configured to determine a positive port transmission time difference according to the first signal and the third signal, and to determine a negative port transmission time difference according to the second signal and the fourth signal; A first charging cable fault determination module, configured to determine the charging cable fault information of the charging pile according to the positive port transmission time difference, the negative port transmission time difference, and the resistance measurement information of the positive power port of the charging pile and the negative power port of the charging pile; Wherein, the first charging cable fault determination module includes: A fault port determination unit, configured to determine a fault port according to a matching result of the positive port transmission time difference, the negative port transmission time difference and the normal charging pile transmission time difference; A resistance measurement unit, configured to determine resistance prediction information of the faulty port according to the transmission time difference of the faulty port, the transmission time difference of the normal charging pile, the cable length of the normal charging pile, and the cable port resistance of the normal charging pile; a fault information determining unit, configured to determine the charging cable fault information according to the resistance measurement information of the fault port and the resistance prediction information; Resistance measuring unit, specifically used for: Determine the predicted break point position of the cable of the fault port according to the transmission time difference of the fault port, the transmission time difference of the normal charging pile and the cable length of the normal charging pile; Determine the resistance prediction information of the fault port according to the predicted breaking point position, the normal charging pile cable length and the normal charging pile cable port resistance; Accordingly, the fault information determination unit is specifically used for: If the resistance measurement information of the faulty port is the same as the resistance prediction information, the charging cable fault information is generated according to the predicted break point position of the cable of the faulty port.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the automatic detection method for charging pile charging failure according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the automatic detection method for charging pile charging failure according to any one of claims 1 to 7 when executed.

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