Charging pile management method, charging pile, storage medium and program product

Abstract

The invention provides a charging pile management method, a charging pile, a storage medium and a program product, and relates to the technical field of charging piles, and the method comprises the steps: obtaining the AC voltage data of a plurality of power modules in the charging pile; determining whether the AC input voltage of the charging pile is abnormal or not based on the AC voltage data of the plurality of power modules and a preset abnormality judgment condition; and when the AC input voltage of the charging pile is abnormal, the AC contactor is disconnected. The method is used for solving the burning loss fault problem of the alternating current contactor.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, specifically to the field of charging pile technology, and particularly to a charging pile management method, a charging pile, a storage medium, and a program product. Background Technology

[0002] With the rapid development of charging stations, the problem of operational failures of charging piles in charging stations has become increasingly prominent.

[0003] For example, if the grid voltage is unstable during charging, it can easily lead to a phase loss or undervoltage fault at the AC input of the charging pile. At this time, the system often enters a detection blind zone due to power failure and cannot judge the dynamic changes of the input voltage of the charging pile in real time. As the abnormal grid condition continues, the contactor will repeatedly make intermittent connections under insufficient voltage conditions, and the contact arc will continue to accumulate, eventually leading to coil burnout. Summary of the Invention

[0004] This application provides a charging pile management method, a charging pile, a storage medium, and a program product, which can accurately solve the burn-out fault of AC contactors through an innovative software control logic upgrade technology path.

[0005] In a first aspect, this application provides a charging pile management method, which includes: acquiring AC voltage data of multiple power modules in the charging pile; determining whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of the multiple power modules and preset abnormal judgment conditions; and disconnecting the AC contactor when the AC input voltage of the charging pile is abnormal.

[0006] The charging pile management method provided in this application can acquire AC voltage data from multiple power modules within the charging pile. Based on this data and preset anomaly detection conditions, it determines whether the AC input voltage of the charging pile is abnormal. If the AC input voltage is abnormal, the AC contactor is disconnected. This allows for accurate identification of abnormal AC input voltage in charging piles even when the grid voltage remains abnormal for an extended period and no maintenance personnel are on duty at the site. It also enables timely disconnection of the AC contactor, preventing ineffective engagement and burnout of the contactor.

[0007] Furthermore, the charging pile management method provided in this application does not require any new components. It can accurately identify abnormal AC input voltage of the charging pile and disconnect the AC contactor in time by upgrading the software control strategy. The transformation cost is low, it can be compatible with the transformation scenarios of new and old equipment, and the solution has strong versatility.

[0008] Optionally, based on the AC voltage data of multiple power modules and preset abnormal judgment conditions, it is determined whether the AC input voltage of the charging pile is abnormal, including: in response to the AC voltage data of multiple power modules meeting any one of the following abnormal judgment conditions, it is determined that the grid voltage connected to the charging pile is abnormal: phase loss judgment condition, undervoltage judgment condition, and overvoltage judgment condition.

[0009] Optionally, the method further includes: in response to the fact that the AC voltage data of multiple power modules are all less than a first voltage threshold, determining that the operating data of multiple power modules all meet the phase loss judgment condition.

[0010] Optionally, the method further includes: in response to the fact that the AC voltage data of multiple power modules are all greater than or equal to a first voltage threshold and less than a second voltage threshold, determining that the AC voltage data of multiple power modules all meet the phase loss judgment condition; the second voltage threshold is greater than the first voltage threshold.

[0011] Optionally, the method further includes: in response to the fact that the AC voltage data of multiple power modules are all greater than a third voltage threshold, determining that the AC voltage data of multiple power modules all meet the overvoltage judgment condition.

[0012] Optionally, acquiring AC voltage data of multiple power modules within the charging pile includes: acquiring AC voltage data of multiple power modules within the charging pile during a detection period; the detection period is the product of the unit detection time of a single power module and the number of multiple power modules.

[0013] Optionally, the method further includes: after disconnecting the AC contactor, repeatedly closing the AC contactor at preset intervals, and within a preset time after each closing of the AC contactor, performing the following steps: acquiring AC voltage data of multiple power modules in the charging pile, determining whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of the multiple power modules and preset abnormal judgment conditions, and disconnecting the AC contactor if the AC input voltage of the charging pile is abnormal, until it is determined that the AC input voltage of the charging pile is normal based on the AC voltage data of the multiple power modules and the abnormal judgment conditions.

[0014] The charging pile management method provided in this application can also repeatedly close the AC contactor at preset intervals after disconnecting it, and repeatedly try to engage the AC contactor to detect whether the AC input voltage is abnormal. Even if the abnormal grid voltage lasts for a long time and there are no maintenance personnel on site, once the grid voltage returns to normal, the charging pile can automatically detect and trigger the safety start mechanism. Under the premise of ensuring that there is no risk of damage to all electrical components, the charging pile can quickly return to normal operation and can be put into charging service immediately without manual intervention.

[0015] In addition, repeatedly closing the AC contactor at preset intervals allows the coil inside the AC contactor sufficient time to dissipate heat naturally, effectively preventing the coil from burning out due to prolonged overheating, extending the service life of the equipment, and reducing maintenance costs.

[0016] Secondly, this application provides a management device, which includes an acquisition module and a processing module. The acquisition module is used to acquire AC voltage data of multiple power modules within the charging pile. The processing module is used to determine whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of the multiple power modules and preset abnormality judgment conditions; and to disconnect the AC contactor if the AC input voltage of the charging pile is abnormal.

[0017] Optionally, the processing module is specifically used to determine that the grid voltage connected to the charging pile is abnormal in response to the fact that the AC voltage data of multiple power modules all meet any of the following abnormal judgment conditions: phase loss judgment condition, undervoltage judgment condition, and overvoltage judgment condition.

[0018] Optionally, the processing module is further configured to determine that the operating data of the multiple power modules all meet the phase loss judgment condition in response to the fact that the AC voltage data of the multiple power modules are all less than the first voltage threshold.

[0019] Optionally, the processing module is further configured to determine that the AC voltage data of the multiple power modules all meet the phase loss judgment condition in response to the fact that the AC voltage data of the multiple power modules are all greater than or equal to the first voltage threshold and less than the second voltage threshold; the second voltage threshold is greater than the first voltage threshold.

[0020] In some possible embodiments, the processing module is further configured to determine that the AC voltage data of multiple power modules all meet the overvoltage judgment condition in response to the fact that the AC voltage data of multiple power modules are all greater than a third voltage threshold.

[0021] Optionally, the acquisition module is specifically used to acquire AC voltage data of multiple power modules in the charging pile within the detection period; the detection period is the product of the unit detection time of a single power module and the number of multiple power modules.

[0022] Optionally, the processing module is further configured to, after disconnecting the AC contactor, repeatedly close the AC contactor at preset intervals, and within a preset time after each closure of the AC contactor, perform the following steps: acquiring AC voltage data of multiple power modules in the charging pile; determining whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of the multiple power modules and preset abnormal judgment conditions; and disconnecting the AC contactor if the AC input voltage of the charging pile is abnormal, until it is determined that the AC input voltage of the charging pile is normal based on the AC voltage data of the multiple power modules and the abnormal judgment conditions.

[0023] Thirdly, this application provides a charging pile, which includes: a processor and a memory; the memory stores instructions executable by the processor; the processor is configured to execute the instructions to cause the charging pile to implement the method provided in the first aspect above.

[0024] Fourthly, this application provides a readable storage medium comprising: software instructions; when the software instructions are executed in a charging pile, the charging pile causes the charging pile to implement the method provided in the first aspect above.

[0025] Fifthly, this application provides a computer program product including computer instructions that, when executed on a charging pile, cause the charging pile to perform the method provided in the first aspect above.

[0026] The beneficial effects of aspects two through five above can be referred to in aspect one, and will not be repeated here. Attached Figure Description

[0027] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0028] Figure 1 A flowchart illustrating the charging pile control method provided in an embodiment of this application; Figure 2 Another flowchart illustrating the charging pile management method provided in this application embodiment; Figure 3 is a schematic diagram of the composition of the control device provided in the embodiment of this application; Figure 4 This is a schematic diagram of the composition of a charging pile provided in an embodiment of this application. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and other forms such as the third-person singular "comprises" and the present participle "comprising" are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this application. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0032] In the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0033] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0034] With the rapid development of charging stations, the problem of operational failures of charging piles in charging stations has become increasingly prominent.

[0035] For example, if the grid voltage is unstable during charging, it can easily lead to a phase loss or undervoltage fault at the AC input of the charging pile. At this time, the system often enters a detection blind zone due to power failure and cannot judge the dynamic changes of the input voltage of the charging pile in real time. As the abnormal grid condition continues, the contactor will repeatedly make intermittent connections under insufficient voltage conditions, and the contact arc will continue to accumulate, eventually leading to coil burnout.

[0036] This problem not only directly causes charging piles to shut down, causing charging stations to miss revenue opportunities, but also significantly increases the maintenance costs and after-sales pressure for equipment manufacturers, becoming a hidden obstacle to the industry's large-scale development.

[0037] Based on this, the embodiments of this application provide a charging pile control method, a charging pile, a storage medium, and a program product, which can accurately solve the burn-out fault of AC contactors through an innovative software control logic upgrade technology path.

[0038] The charging pile control method provided in this application is executed by a control device. This control device can be the charging pile itself; alternatively, it can be a controller within the charging pile (e.g., a microcontroller unit (MCU)); or it can be a functional module within the charging pile used to execute the control method. This application does not impose any limitations on these aspects.

[0039] For simplicity, the following description will use the charging pile as an example to illustrate the control device.

[0040] Figure 1 This is a flowchart illustrating the charging pile control method provided in an embodiment of this application. Figure 1 As shown, the method includes the following steps: S101. Obtain AC voltage data of multiple power modules within the charging pile.

[0041] As an example, each power module in the charging pile can be independently configured with a voltage sampling element on its input side. The voltage sampling element can collect the AC voltage data of the power module, and the charging pile can obtain the AC voltage data collected by the voltage sampling element.

[0042] For example, the voltage sampling element can be a voltage transformer (VT) or a Hall voltage sensor. This application does not limit the specific form of the voltage sampling element.

[0043] In some possible embodiments, the above-mentioned S101 may specifically include: acquiring AC voltage data of multiple power modules in the charging pile during the detection period.

[0044] The detection cycle is the product of the unit detection time for a single power module and the number of power modules. The unit detection time is the time required to acquire one AC voltage data point.

[0045] For example, taking a unit detection time of 600 milliseconds (ms) for a single power module, assuming a charging pile has 10 power modules, the detection cycle would be (600 × 10) / 1000 = 6 seconds (s). This detection cycle includes the time spent collecting voltage data from all modules, as well as the entire process of data comparison and analysis and fault information reporting by the system, ensuring the comprehensiveness and accuracy of fault diagnosis.

[0046] S102. Based on the AC voltage data of multiple power modules and preset abnormal judgment conditions, determine whether the AC input voltage of the charging pile is abnormal.

[0047] In one possible implementation, S102 may specifically include: in response to the AC voltage data of multiple power modules all satisfying any one of the following abnormal judgment conditions, determining that the grid voltage connected to the charging pile is abnormal: phase loss judgment condition, undervoltage judgment condition, and overvoltage judgment condition.

[0048] As an example, a charging pile can determine that the operating data of multiple power modules meet the phase loss judgment condition if the AC voltage data of multiple power modules are all less than a first voltage threshold.

[0049] For example, the first voltage threshold can be set to 170 volts (V).

[0050] As another example, the charging pile can determine that the AC voltage data of multiple power modules all meet the phase loss judgment condition in response to the fact that the AC voltage data of multiple power modules are all greater than or equal to a first voltage threshold and less than a second voltage threshold.

[0051] The second voltage threshold is greater than the first voltage threshold.

[0052] For example, the second voltage threshold can be set to 187V.

[0053] As another example, the charging pile can determine that the AC voltage data of multiple power modules all meet the overvoltage judgment condition in response to the fact that the AC voltage data of multiple power modules are all greater than the third voltage threshold.

[0054] The third voltage threshold is greater than the second voltage threshold.

[0055] For example, the third voltage threshold can be set to 253V.

[0056] S103. Disconnect the AC contactor if the AC input voltage of the charging pile is abnormal.

[0057] As an example, the controller in a charging station can disconnect the AC contactor by controlling the on / off state of the power supply circuit of the AC contactor coil.

[0058] In some possible embodiments, the charging station can keep the AC contactor continuously closed if the AC input voltage of the charging station is not abnormal.

[0059] In the charging pile management method provided in this application embodiment, the charging pile can acquire AC voltage data from multiple power modules within the charging pile. Based on the AC voltage data from multiple power modules and preset anomaly judgment conditions, it determines whether the AC input voltage of the charging pile is abnormal. If the AC input voltage of the charging pile is abnormal, the AC contactor is disconnected. In this way, even when the abnormal grid voltage condition persists for a long time and there are no maintenance personnel on duty at the site, the abnormal AC input voltage of the charging pile can be accurately identified, and the AC contactor can be disconnected in a timely manner, avoiding ineffective engagement and burnout of the AC contactor.

[0060] Furthermore, the charging pile management method provided in this application embodiment does not require any new components. It can accurately identify abnormal AC input voltage of the charging pile and disconnect the AC contactor in time by upgrading the software control strategy. The transformation cost is low, and it can be compatible with the transformation scenarios of new and old equipment. The solution has strong versatility.

[0061] In some possible embodiments, Figure 2 This is another schematic flowchart illustrating the charging pile management method provided in an embodiment of this application. Figure 2 As shown, after S103 above, the method may further include the following steps: S201. After disconnecting the AC contactor, the AC contactor is repeatedly closed according to a preset interval period. Within a preset time after each closure of the AC contactor, the steps of acquiring AC voltage data of multiple power modules in the charging pile, determining whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of multiple power modules and preset abnormal judgment conditions, and disconnecting the AC contactor when the AC input voltage of the charging pile is abnormal are executed until the AC input voltage of the charging pile is determined to be normal based on the AC voltage data of multiple power modules and the abnormal judgment conditions.

[0062] The preset interval period can be preset in the charging pile, for example, it can be set to 20 minutes, 25 minutes, 30 minutes, 35 minutes, or 40 minutes. This application embodiment does not limit the specific duration of the preset interval period. The steps of acquiring AC voltage data from multiple power modules within a preset time after each AC contactor closure, determining whether the AC input voltage of the charging pile is abnormal based on the AC voltage data from the multiple power modules and preset abnormality judgment conditions, and disconnecting the AC contactor if the AC input voltage of the charging pile is abnormal, can be specifically referred to in section S102 above, and will not be repeated here.

[0063] In the charging pile management method provided in this application embodiment, the charging pile can also repeatedly close the AC contactor at preset intervals after disconnecting the AC contactor, and repeatedly try to energize the AC contactor to detect whether the AC input voltage is abnormal. Even if the abnormal grid voltage condition lasts for a long time and there are no maintenance personnel on site, once the grid voltage returns to normal, the charging pile can automatically detect and trigger the safety start mechanism. Under the premise of ensuring that there is no risk of damage to all electrical components, the charging pile can quickly return to normal operation and can be put into charging service immediately without manual intervention.

[0064] In addition, repeatedly closing the AC contactor at preset intervals allows the coil inside the AC contactor sufficient time to dissipate heat naturally, effectively preventing the coil from burning out due to prolonged overheating, extending the service life of the equipment, and reducing maintenance costs.

[0065] Based on the understanding of the above embodiments, in an exemplary embodiment, when the AC contactor coil is normally engaged, if the AC input voltage of the charging pile experiences a phase loss or undervoltage fault, but the grid voltage can still meet the normal engagement conditions of the AC contactor coil, the charging pile can activate an active monitoring and judgment mechanism to receive the three-phase voltage data of each power module in real time. By comparing the three-phase voltage data of each power module with the phase loss and undervoltage thresholds of the terminology, the specific abnormal state (phase loss or undervoltage) of the current AC input voltage can be accurately determined, and the corresponding real-time fault information can be immediately displayed on the system interface, making it convenient for maintenance personnel to be aware of the fault situation.

[0066] Considering the timeliness and completeness of data acquisition, the three-phase voltage data acquisition process for a single power module takes 600ms. Since the charging pile needs to acquire voltage data from all (N) modules to complete a comprehensive judgment, the total judgment and reporting time (Ttotal) is calculated as follows: Ttotal = 600ms × N / 1000 (unit: seconds). This time includes the acquisition time of all power module voltage data, as well as the entire process of data comparison and analysis and fault information reporting by the charging pile, ensuring the comprehensiveness and accuracy of fault judgment.

[0067] Based on the understanding of the above embodiments, in an exemplary embodiment, when the AC contactor coil fails to engage normally, and the phase loss or undervoltage fault of the AC input voltage is severe, causing the grid voltage to be unable to meet the engagement requirements of the AC contactor coil, the charging pile can automatically switch to standby mode. At this time, because the charging pile cannot obtain the three-phase voltage data of the power module, it cannot determine the voltage status through threshold comparison. However, the charging pile can maintain a non-sleep mode and continuously execute the fault recovery attempt mechanism.

[0068] For example, a charging station can automatically issue a drive command when the AC input voltage is normal, using a fixed interval of 30 minutes, to attempt to trigger the AC contactor coil to engage. Each engagement attempt lasts for 30 seconds. If the grid voltage has not returned to normal within the 30-second engagement attempt, the AC contactor cannot engage stably, and the charging station will terminate the attempt, waiting for the next 30-minute cycle to repeat the same engagement operation. This recovery mechanism can be executed cyclically until the grid voltage returns to normal, the AC contactor successfully engages, and all equipment at the station resumes normal operation.

[0069] After the grid voltage returns to normal, the power module needs a certain amount of time to complete a comprehensive self-test of the three-phase power supply to confirm its normal operating status. Simultaneously, the system needs to clear previously recorded fault information. The 30-second time limit ensures the completeness of the module's self-test and the effectiveness of fault clearing, preventing abnormal device startup due to insufficient time.

[0070] In the event of a phase loss or undervoltage condition, if the AC contactor coil continuously attempts to engage but fails, a large amount of heat will be generated due to the current flowing through it. A 30-minute interval allows the coil sufficient time to dissipate heat naturally, effectively preventing the coil from burning out due to prolonged overheating, extending the equipment's lifespan, and reducing maintenance costs.

[0071] The foregoing primarily describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the aforementioned functions, each device, such as a control unit, includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, in conjunction with the algorithmic steps of the examples described in the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Experts may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0072] This application embodiment can divide the control device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0073] In an exemplary embodiment, this application provides a control device. Figure 3 is a schematic diagram of the composition of the control device provided in this application embodiment. Figure 3 As shown, the control device may include an acquisition module 301 and a processing module 302.

[0074] The acquisition module 301 is used to acquire AC voltage data of multiple power modules in the charging pile.

[0075] The processing module 302 is used to determine whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of multiple power modules and preset abnormal judgment conditions; and to disconnect the AC contactor if the AC input voltage of the charging pile is abnormal.

[0076] In some possible embodiments, the processing module 302 is specifically used to determine that the grid voltage connected to the charging pile is abnormal in response to the fact that the AC voltage data of multiple power modules all meet any of the following abnormal judgment conditions: phase loss judgment condition, undervoltage judgment condition, and overvoltage judgment condition.

[0077] In some possible embodiments, the processing module 302 is further configured to determine that the operating data of the multiple power modules all meet the phase loss judgment condition in response to the fact that the AC voltage data of the multiple power modules are all less than the first voltage threshold.

[0078] In some possible embodiments, the processing module 302 is further configured to determine that the AC voltage data of the multiple power modules all meet the phase loss judgment condition in response to the fact that the AC voltage data of the multiple power modules are all greater than or equal to a first voltage threshold and less than a second voltage threshold; the second voltage threshold is greater than the first voltage threshold.

[0079] In some possible embodiments, the processing module 302 is further configured to determine that the AC voltage data of the multiple power modules all meet the overvoltage judgment condition in response to the fact that the AC voltage data of the multiple power modules are all greater than the third voltage threshold.

[0080] In some possible embodiments, the acquisition module 301 is specifically used to acquire AC voltage data of multiple power modules in the charging pile within a detection period; the detection period is the product of the unit detection time of a single power module and the number of multiple power modules.

[0081] In some possible embodiments, the processing module 302 is further configured to, after disconnecting the AC contactor, repeatedly close the AC contactor at preset intervals, and within a preset time after each closure of the AC contactor, perform the following steps: acquiring AC voltage data of multiple power modules in the charging pile, determining whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of the multiple power modules and preset abnormal judgment conditions, and disconnecting the AC contactor if the AC input voltage of the charging pile is abnormal, until it is determined that the AC input voltage of the charging pile is normal based on the AC voltage data of the multiple power modules and the abnormal judgment conditions.

[0082] It should be noted that the above Figure 3 Modules in a module can also be called units; for example, a processing module can be called a processing unit. Additionally, in... Figure 3 In the embodiments shown, the names of the modules may not be the same as those shown in the figure. For example, the acquisition module may also be called the transceiver module or the communication module.

[0083] Figure 3 If the various modules in the application are implemented as software functional modules and sold or used as independent products, they can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of software products. These software products are stored in a storage medium and include several instructions to cause an electronic device (which may be a mobile phone, personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0084] In an exemplary embodiment, this application also provides a charging pile. Figure 4 This is a schematic diagram illustrating the composition of a charging pile provided in an embodiment of this application. Figure 4 As shown, the charging station includes a processor 402, a communication interface 403, and a bus 404. As an example, the charging station may also include a memory 401.

[0085] Processor 402 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 402 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 402 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0086] Communication interface 403 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0087] The memory 401 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0088] As one possible implementation, the memory 401 can exist independently of the processor 402. The memory 401 can be connected to the processor 402 via a bus 404 and is used to store instructions or program code. When the processor 402 calls and executes the instructions or program code stored in the memory 401, it can implement the charging pile management method provided in this application embodiment.

[0089] In another possible implementation, the memory 401 can also be integrated with the processor 402.

[0090] Bus 404 can be an extended industry standard architecture (EISA) bus, etc. Bus 404 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0091] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the communication device or server can be divided into different functional modules to complete all or part of the functions described above.

[0092] In an exemplary embodiment, this application also provides a readable storage medium including software instructions. When the software instructions are executed in the charging pile, they enable the charging pile to implement the methods described in the above embodiments. The readable storage medium can also be an external storage device of the charging pile, such as a plug-in hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the charging pile. Further, the readable storage medium can include both internal storage units and external storage devices of the charging pile. The readable storage medium is used to store the software instructions and other programs and data required by the charging pile. The readable storage medium can also be used to temporarily store data that has been output or will be output.

[0093] In an exemplary embodiment, this application also provides a computer program product, which includes computer instructions that, when executed on a charging pile, cause the charging pile to perform the method described in the above method embodiment.

[0094] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software programs, implementation can be, in whole or in part, in the form of a computer program product. This computer program product includes one or more computer-executable instructions. When these computer-executable instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer-executable instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer-executable instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device containing one or more servers, data centers, etc., that can be integrated with the medium. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape) or an optical medium (e.g., DVD), etc.

[0095] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, disclosure, and appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0096] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if such modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, this application is also intended to include such modifications and modifications.

[0097] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging pile control method, characterized in that, The method comprises: obtaining AC voltage data of a plurality of power modules in the charging pile; determining whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of the plurality of power modules and a preset abnormality judgment condition; in the case that the AC input voltage of the charging pile is abnormal, disconnecting the AC contactor.

2. The method of claim 1, wherein, The determination of whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of the plurality of power modules and a preset abnormality judgment condition comprises: in response to the AC voltage data of the plurality of power modules all satisfying any one of the following abnormality judgment conditions, determining that the grid voltage connected to the charging pile is abnormal: phase loss judgment condition, under-voltage judgment condition, over-voltage judgment condition.

3. The method of claim 2, wherein, The method further comprises: in response to the AC voltage data of the plurality of power modules all being less than a first voltage threshold, determining that the operation data of the plurality of power modules all satisfy the phase loss judgment condition.

4. The method of claim 2, wherein, The method further comprises: in response to the AC voltage data of the plurality of power modules all being greater than or equal to a first voltage threshold and less than a second voltage threshold, determining that the AC voltage data of the plurality of power modules all satisfy the phase loss judgment condition; the second voltage threshold is greater than the first voltage threshold.

5. The method of claim 2, wherein, The method further comprises: in response to the AC voltage data of the plurality of power modules all being greater than a third voltage threshold, determining that the AC voltage data of the plurality of power modules all satisfy the over-voltage judgment condition.

6. The method of claim 1, wherein, The obtaining of the AC voltage data of the plurality of power modules in the charging pile comprises: obtaining the AC voltage data of the plurality of power modules in the charging pile within a detection period; the detection period is the product of the unit detection duration of a single power module and the number of the plurality of power modules.

7. The method of claim 1, wherein, The method further comprises: after disconnecting the AC contactor, repeatedly closing the AC contactor at a preset interval period, and performing the steps of obtaining the AC voltage data of the plurality of power modules in the charging pile, determining whether the AC input voltage of the charging pile is abnormal based on the AC voltage data of the plurality of power modules and a preset abnormality judgment condition, and disconnecting the AC contactor in the case that the AC input voltage of the charging pile is abnormal within a preset time duration after each closing of the AC contactor, until it is determined that the AC input voltage of the charging pile is normal based on the AC voltage data of the plurality of power modules and the abnormality judgment condition.

8. A charging post, characterized by comprise: a memory and a processor; the memory stores instructions executable by the processor; the processor is configured to execute the instructions, so that the charging pile implements the method of any one of claims 1-6.

9. A readable storage medium, characterized by, comprise: software instructions; when the software instructions are executed in the charging pile, so that the charging pile implements the method of any one of claims 1-6.

10. A computer program product, characterised in that, comprise: computer instructions; when the computer instructions are executed in the charging pile, so that the charging pile implements the method of any one of claims 1-6.

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