Automatic test method and system for split type direct current charging pile charging main cabinet

Abstract

The invention discloses an automatic testing method for a charging main cabinet of a split type direct current charging pile. The automatic testing method comprises the steps that communication connection between a main controller and a power sharing module and communication connection between a plurality of power modules and a plurality of charging terminals are detected; performing consistency detection on the plurality of contactor drivers in the power sharing module; performing module address detection on each power module; performing power cable wiring detection between the charging main cabinet and the plurality of charging terminals; performing a connection validity test on the plurality of contactors of the power sharing module; and carrying out validity testing on wiring between the plurality of power modules and the shared power module. According to the automatic test method, the efficiency and accuracy of the test process are improved, the risk of manual intervention is reduced, and the stability of the charging main cabinet of the charging pile is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging testing, and particularly to an automatic testing method, system, device and computer-readable storage medium for a charging main cabinet of a split-type DC charging pile. Background Art

[0002] A split-type DC charging pile is an electric vehicle charging device that separates the control part and the power part of the DC charging device. It usually consists of two parts: a charging main cabinet and a charging terminal. The split design allows these two parts to be set independently. The charging terminal can be set in the vehicle parking area, while the charging main cabinet can be placed in a relatively more convenient location and may share space with other facilities. Therefore, it is usually applicable to charging stations that require high-power charging and have a relatively large site, supports fast charging, and can provide a faster charging experience for electric vehicles. To ensure that it can charge electric vehicles safely, reliably and efficiently in actual use, it is necessary to test it to discover potential problems and correct them in advance, so as to ensure that the split-type DC charging pile can serve the charging needs of electric vehicles safely, stably and effectively after being put into use. However, the existing automated testing methods are all for testing the charging terminal. Based on this, an automated testing method for the charging main cabinet is needed.

[0003] Based on this, a new solution is needed. Summary of the Invention

[0004] The main object of the present invention is to provide an automatic testing method and system for a charging main cabinet of a split-type DC charging pile.

[0005] To achieve the above object, the present invention provides an automatic testing method for a charging main cabinet of a split-type DC charging pile. The charging main cabinet includes a main controller, a power sharing module and a plurality of power modules. The input end of the power sharing module is electrically connected to the plurality of power modules, the output end of the power sharing module is electrically connected to a plurality of charging terminals, the main controller is communicatively connected to the power sharing module, the plurality of power modules and the plurality of charging terminals. The power sharing module includes a plurality of contactors, and a charging network topology is established through the plurality of contactors. The method is characterized by comprising the following steps:

[0006] Detect the communication connection between the main controller and the power sharing module, the plurality of power modules and the plurality of charging terminals;

[0007] Detect the consistency of driving of the plurality of contactors in the power sharing module;

[0008] Detect the module address of each power module;

[0009] Perform power cable wiring detection between the charging main cabinet and multiple charging terminals;

[0010] Perform connection validity testing on the power sharing module including multiple contactors; and

[0011] Perform validity testing on the wiring between multiple power modules and the shared power module.

[0012] In the automatic testing method for the charging main cabinet of a split - type DC charging pile provided by the present invention, the steps of detecting the communication connections between the main controller and the power sharing module, the multiple power modules, and the multiple charging terminals include:

[0013] The main controller sends corresponding commands to the power sharing module, the multiple power modules, and the multiple charging terminals according to the communication protocol type;

[0014] The power sharing module, the multiple power modules, and the multiple charging terminals send corresponding data to the main controller according to the received commands;

[0015] The main controller determines whether the returned data meets the requirements of the corresponding communication protocol type.

[0016] In the automatic testing method for the charging main cabinet of a split - type DC charging pile provided by the present invention, the steps of performing consistency detection on the multiple contactors in the power sharing module include:

[0017] Send drive signals to each of the contactors;

[0018] Judge the voltage of the feedback signal received from the contactor and the drive signal. When the voltage of the feedback signal matches the drive signal, it is determined that the contactor passes the consistency detection.

[0019] In the automatic testing method for the charging main cabinet of a split - type DC charging pile provided by the present invention, the steps of performing module address detection on each power module include:

[0020] Disconnect the AC relays of all power modules;

[0021] Check whether all power modules are in the offline state. When there is a power module in the online state among all power modules, it is determined that the AC relay of the online - state power module is faulty. When all power modules are in the offline state, the AC relay of the power module with module address x is energized;

[0022] When the power module with module address x is in the online state, it is determined that the module address setting of the power module with module address x is correct; when the power module with module address x is in the offline state, it is determined that the module address setting of the power module with module address x is incorrect;

[0023] Disconnect the AC relay of the power module with module address x;

[0024] Check whether the power module with module address x is in the offline state. When the power module with module address x is in the online state, it is determined that there is a fault in the AC relay of the power module with module address x.

[0025] In the automatic test method for the charging main cabinet of the split-type DC charging pile provided by the present invention, the steps of detecting the power cable connection between the charging main cabinet and multiple charging terminals include:

[0026] Turn on the i-th power module;

[0027] Detect the output voltage of the output channel where the i-th power module is located;

[0028] When the difference between the output voltage and the output voltage setting value of the i-th power module is within the preset range, it is determined that the power cable connection connected to the output channel is working properly.

[0029] In the automatic test method for the charging main cabinet of the split-type DC charging pile provided by the present invention, the steps of testing the connection effectiveness of the power sharing module including multiple contactors include:

[0030] Close the j-th contactor of the power sharing module;

[0031] Turn on the power module connected to the j-th contactor;

[0032] Judge whether the j-th contactor is connected to the charging terminal. When the j-th contactor is connected to the charging terminal, detect the voltage of the charging terminal. When the j-th contactor is not connected to the charging terminal, use the BFS algorithm to find the charging terminal closest to the j-th contactor, and close all the contactors between the power module connected to the j-th contactor and the charging terminal closest to the j-th contactor, and detect the voltage of the charging terminal closest to the j-th contactor;

[0033] When the difference between the voltage of the charging terminal and the output voltage setting value of the power module is within the preset range, it is determined that the j-th contactor is effective.

[0034] In the automatic test method for the charging main cabinet of the split-type DC charging pile provided by the present invention, the steps of testing the validity of the wiring between multiple power modules and the shared power module include:

[0035] Put the i-th power module into the i-th output channel;

[0036] Detect the voltages of all output channels. When there is voltage only in the i-th output channel, it is determined that the wiring between the i-th power module and the shared power module is correct.

[0037] In addition, to achieve the above object, the present invention also provides an automatic test system for the charging main cabinet of the split-type DC charging pile. The charging main cabinet includes a main controller, a power sharing module, and multiple power modules. The input end of the power sharing module is electrically connected to the multiple power modules, and the output end of the power sharing module is electrically connected to multiple charging terminals. The main controller is communicatively connected to the power sharing module, the multiple power modules, and the multiple charging terminals. The power sharing module includes multiple contactors, and a charging network topology is established through the multiple contactors, including:

[0038] A communication connection detection unit for detecting the communication connections between the main controller and the power sharing module, the multiple power modules, and the multiple charging terminals;

[0039] A consistency detection unit for detecting the consistency of the driving of the multiple contactors in the power sharing module;

[0040] A module address detection unit for detecting the module address of each power module;

[0041] A power cable wiring detection unit for detecting the power cable wiring between the charging main cabinet and the multiple charging terminals;

[0042] A first connection validity test unit for testing the connection validity of the multiple contactors included in the power sharing module; and

[0043] A second connection validity test unit for testing the validity of the wiring between the multiple power modules and the shared power module.

[0044] The present invention also provides an automatic test device for the charging main cabinet of the split-type DC charging pile, including a processor and a memory. The memory stores a computer program, and when the computer program is executed by the processor, the steps of the automatic test method for the charging main cabinet of the split-type DC charging pile as described above are implemented.

[0045] The automatic test system and method for the charging main cabinet of the split DC charging pile provided by the present invention have the following beneficial effects: The automated test method conducts tests through a systematic and standardized process, greatly improving the efficiency and accuracy of the tests. Compared with manual testing, automated testing can complete a large number of test tasks in a shorter time, improving the test efficiency. It can eliminate human interference and ensure that each test step is executed according to the predetermined procedure, thereby improving the reliability of the test results. The automated test method covers all key parts of the split DC charging pile, and a comprehensive test plan can ensure that all functions and performances of the charging pile can be stably exerted during actual use, avoiding problems caused by omissions in single-item tests. Automated testing can monitor and record problems that occur during the test process in real time and provide a detailed test report. Through data analysis, the development team can quickly locate potential hardware or software problems, providing a basis for further product optimization and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings:

[0047] Figure 1 The following shows a schematic diagram of the application scenario of the automatic test method for the charging main cabinet of the split DC charging pile provided by an embodiment of the present invention;

[0048] Figure 2 The following shows a flowchart of the automatic test method for the charging main cabinet of the split DC charging pile provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The typical embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0051] Figure 1The figure shows a schematic diagram of an application scenario of an automatic testing method for a charging main cabinet of a split-type DC charging pile provided by an embodiment of the present invention. As Figure 1 shown, the charging main cabinet includes a main controller, a power sharing module, and a plurality of power modules. The input end of the power sharing module is electrically connected to the plurality of power modules, the output end of the power sharing module is electrically connected to a plurality of charging terminals, the main controller is communicatively connected to the power sharing module, the plurality of power modules, and the plurality of charging terminals. The power sharing module includes a plurality of contactors, and a charging network topology is established through the plurality of contactors.

[0052] Figure 2 The figure shows a flowchart of an automatic testing method for a charging main cabinet of a split-type DC charging pile provided by an embodiment of the present invention. As Figure 2 shown, the automatic testing method for the charging main cabinet of the split-type DC charging pile includes the following steps:

[0053] Step S1, detect the communication connections between the main controller and the power sharing module, the plurality of power modules, and the plurality of charging terminals;

[0054] Specifically, in an embodiment of the present invention, by detecting the communication connections between the main controller and the power sharing module, the plurality of power modules, and the plurality of charging terminals, it is ensured that they are properly connected and data is exchanged. The main controller sends corresponding commands to the power sharing module, the plurality of power modules, and the plurality of charging terminals according to a specific communication protocol type. These commands may include requests for data, control operations, or other instructions. After receiving the commands, the power sharing module, the power modules, and the charging terminals return corresponding data according to the requirements of the commands. The content and format of the data usually match the protocol type. After receiving the returned data, the main controller determines whether the data meets the requirements of the specific communication protocol type. If it meets, it indicates that the communication connection is normal; if it does not meet, there may be a communication failure or data transmission problem, and further troubleshooting is required. Therefore, step S1 includes:

[0055] The main controller sends corresponding commands to the power sharing module, the plurality of power modules, and the plurality of charging terminals according to the communication protocol type;

[0056] The power sharing module, the plurality of power modules, and the plurality of charging terminals send corresponding data to the main controller according to the received commands;

[0057] The main controller determines whether the returned data meets the requirements of the corresponding communication protocol type.

[0058] Through this method, the main controller can detect whether the communication with multiple modules and terminals is stable and meets the predetermined standards, ensuring the normal operation of the system.

[0059] Step S2: Perform consistency detection on the driving of the multiple contactors within the power sharing module;

[0060] Specifically, in an embodiment of the present invention, first, the system sends a driving signal to each contactor. The function of the contactor is to control the closing or opening of the circuit, and the sending of the driving signal is to initiate the working process of the contactor. After receiving the driving signal, the contactor generates a corresponding feedback signal, which is the electrical response after the contactor works and is usually fed back in the form of voltage. Then, the main controller determines whether the voltage of the feedback signal matches the sent driving signal. Specifically, there should be a certain consistency between the voltage of the driving signal and the feedback signal (for example, the voltage value should be within an allowable error range) to indicate that the contactor has correctly completed the required operation. If the voltage of the feedback signal matches the voltage of the driving signal, it means that the contactor is working properly and can correctly respond to the driving signal, and at this time, it can be determined that the contactor passes the consistency detection. If the voltages do not match, it means that the contactor may have a fault or abnormal response and fails the consistency detection. Therefore, step S2 includes:

[0061] Send a driving signal to each of the contactors;

[0062] Judge the voltage of the feedback signal received from the contactor and the driving signal, and when the voltage of the feedback signal matches the driving signal, determine that the contactor passes the consistency detection.

[0063] Through this consistency detection method, the system can confirm whether the working state of each contactor meets the expectation, ensuring that the contactors in the power sharing module can reliably perform circuit control operations during actual operation.

[0064] Step S3: Perform module address detection on each power module;

[0065] Specifically, in an embodiment of the present invention, each power module has a fixed number set manually as the communication address. First, the system disconnects the AC relays of all power modules. Then, it checks whether all power modules are in the offline state. If any power module is in the online state (i.e., still able to communicate), it can be determined that there is a fault in the AC relay of these power modules, and the detection ends; if all power modules are in the offline state, then according to the preset module address, a specific power module is checked. For example, assume the power module with module address x. In this state, the system will supply power to the AC relay of this module to make it close. If the power module with module address x is in the online state, the system will determine that the module address setting of this module is correct; if the power module with module address x is in the offline state, the system will consider that the module address setting is incorrect. After the above detection is completed, the system will disconnect the AC relay of the power module with module address x again. By checking whether the power module with module address x re-enters the offline state, the system determines whether there is a fault in the AC relay of this module. If the power module with module address x still remains in the online state, the system will determine that there is a fault in the AC relay. And so on, until all power modules are checked. Therefore, step S3 includes:

[0066] Disconnect the AC relays of all power modules;

[0067] Check whether all power modules are in the offline state. When there is a power module in the online state among all power modules, it is determined that there is a fault in the AC relay of the power module in the online state. When all power modules are in the offline state, the AC relay of the power module with module address x is closed according to the module address;

[0068] When the power module with module address x is in the online state, it is determined that the module address setting of the power module with module address x is correct. When the power module with module address x is in the offline state, it is determined that the module address setting of the power module with module address x is incorrect;

[0069] Disconnect the AC relay of the power module with module address x;

[0070] Check whether the power module with module address x is in the offline state. When the power module with module address x is in the online state, it is determined that there is a fault in the AC relay of the power module with module address x.

[0071] In this way, the system can not only ensure that the module address setting of each power module is correct, but also detect whether there is a fault in the AC relay of the power module, ensuring that both the communication address and the circuit control function can work properly.

[0072] Step S4: Conduct power cable wiring detection between the main charging cabinet and multiple charging terminals;

[0073] Specifically, in an embodiment of the present invention, the charging terminal is connected to the output channel of the main charging cabinet through a power cable, and the other end of each output channel is a power module. First, the system will turn on the i-th power module. After turning on the power module, the system will detect the output voltage of the output channel where the module is located. Then, the system will compare the detected output voltage with the output voltage setting value of the i-th power module. If the difference between the two is within the preset range, the system will consider that the power cable wiring connected to the output channel is working properly; if the difference exceeds the preset range, the system may determine that there is a problem with the power cable wiring and prompt to check the cable connection, the cable itself, or other possible fault sources. And so on, to complete the detection of all charging terminals. Therefore, step S4 includes:

[0074] Turn on the i-th power module;

[0075] Detect the output voltage of the output channel where the i-th power module is located;

[0076] When the difference between the output voltage and the output voltage setting value of the i-th power module is within the preset range, determine that the power cable wiring connected to the output channel is working properly.

[0077] In this embodiment, it is ensured that the power cable connecting the main charging cabinet and the charging terminal can work properly, avoiding the abnormal operation of the charging system caused by improper wiring or cable failure.

[0078] Step S5: Conduct connection effectiveness testing on the power sharing module including multiple contactors;

[0079] Specifically, in an embodiment of the present invention, the power sharing module includes multiple contactors. By controlling the connection states of the multiple contactors, a charging network can be formed. When testing the j-th contactor, first, the system closes the j-th contactor. Next, the power module connected to this contactor is turned on to start power supply. Then, the system first checks whether the j-th contactor is directly connected to a charging terminal. If the contactor is directly connected to the charging terminal, the system will perform voltage detection, that is, if the j-th contactor is directly connected to the charging terminal, the system will detect the voltage of this charging terminal to ensure its normal operation and compare it with the set value of the output voltage of the power module. Among them, when the charging terminal is connected to the left end of the j-th contactor, the power module connected to the right end of the j-th contactor is turned on to detect the voltage of the charging terminal; when the charging terminal is connected to the right end of the j-th contactor, the power module connected to the left end of the j-th contactor is turned on to detect the voltage of the charging terminal. If the j-th contactor is not directly connected to any charging terminal, the system will use the BFS (Breadth-First Search) algorithm to find the charging terminal closest to this contactor. This step ensures that the system can find the most suitable connection path for power transmission. After finding the closest charging terminal, the system closes all the contactors from the power module connected to the j-th contactor to this charging terminal to establish a complete power transmission link. The system then detects the voltage connected to the closest charging terminal. If the difference between the detected voltage of the charging terminal and the set voltage of the power module is within the preset range, the system determines that the j-th contactor is effective, indicating that it can work normally and achieve effective power transmission with the charging terminal. And so on, all tests are completed. Therefore, step S5 includes:

[0080] Closing the j-th contactor of the power sharing module;

[0081] Turning on the power module connected to the j-th contactor;

[0082] Judging whether the j-th contactor is connected to a charging terminal. When the j-th contactor is connected to the charging terminal, detecting the voltage of the charging terminal. When the j-th contactor is not connected to the charging terminal, using the BFS algorithm to find the charging terminal closest to the j-th contactor, closing all the contactors from the power module connected to the j-th contactor to the charging terminal closest to the j-th contactor, and detecting the voltage of the charging terminal closest to the j-th contactor;

[0083] When the difference between the voltage of the charging terminal and the set value of the output voltage of the power module is within the preset range, determining that the j-th contactor is effective.

[0084] In this embodiment, it can be ensured that each contactor can be normally connected to the charging terminal, ensuring that the power distribution and transmission of the power sharing module among multiple contactors are effective.

[0085] Step S6: Conduct an effectiveness test on the wiring between multiple power modules and the shared power module.

[0086] Specifically, in an embodiment of the present invention, first, the i-th power module is connected to the i-th output channel. Next, the system detects the voltages of all output channels. This step is to verify whether each output channel is working properly. During the detection process, when and only when a voltage appears in the i-th output channel, it indicates that the wiring between the i-th power module and the shared power module is correct. That is, if among all output channels, only the i-th output channel detects a voltage and this voltage meets the preset standard, the system will determine that the wiring between the i-th power module and the shared power module is correct. This means that the i-th power module is successfully connected to the shared power module and can output power normally. By analogy, all tests are completed. Therefore, step S6 includes:

[0087] Connect the i-th power module to the i-th output channel;

[0088] Detect the voltages of all output channels. When and only when there is a voltage in the i-th output channel, determine that the wiring between the i-th power module and the shared power module is correct.

[0089] Thus, the system can ensure that the wiring between each power module and the shared power module is correct and can effectively transmit power through the output channels. This process ensures the stable operation of the system and avoids the power module from malfunctioning due to wiring problems.

[0090] The automatic test method provided by the present invention for the charging main cabinet of a split-type DC charging pile has the following advantages:

[0091] 1. This automated test method conducts tests through a systematic and standardized process, greatly improving the efficiency and accuracy of the tests; compared with manual tests, automated tests can complete a large number of test tasks in a shorter time, improving the test efficiency;

[0092] 2. Traditional manual tests may result in inaccurate or missed test results due to operation errors, while automated tests can eliminate human interference and ensure that each test step is executed according to the predetermined procedure, thereby improving the reliability of the test results.

[0093] 3. The automated testing method covers all key parts of the split-type DC charging pile, such as the communication connection between the main controller and each module, the driving consistency of the power modules, the wiring effectiveness, etc.; such a comprehensive testing scheme can ensure that all functions and performances of the charging pile can be stably exerted during actual use, and avoid problems caused by omissions in single-item testing;

[0094] 4. The automated testing method is very suitable for product verification on large-scale production lines, can greatly improve production efficiency, shorten the testing cycle, and adapt to the testing requirements of different batches and models of charging piles.

[0095] 5. Automated testing can monitor and record problems occurring during the testing process in real time, and provide detailed test reports; through data analysis, the development team can quickly locate potential hardware or software problems, providing a basis for further product optimization and repair.

[0096] Correspondingly, the present invention also provides an automatic testing system for the charging main cabinet of a split-type DC charging pile, including: a communication connection detection unit for detecting the communication connection between the main controller and the power sharing module, the multiple power modules, and the multiple charging terminals; a consistency detection unit for detecting the consistency of the driving of the multiple contactors in the power sharing module; a module address detection unit for detecting the module address of each power module; a power cable wiring detection unit for detecting the power cable wiring between the charging main cabinet and the multiple charging terminals; a first connection effectiveness testing unit for testing the connection effectiveness of the power sharing module including multiple contactors; and a second connection effectiveness testing unit for testing the wiring effectiveness between the multiple power modules and the shared power module.

[0097] The embodiment of the present invention also provides an automatic testing device for the charging main cabinet of a split-type DC charging pile, which may include:

[0098] A memory for storing a computer program;

[0099] A processor, when executing the computer program stored in the above memory, can implement the following steps:

[0100] Detect the communication connection between the main controller and the power sharing module, the multiple power modules, and the multiple charging terminals; detect the consistency of the driving of the multiple contactors in the power sharing module; detect the module address of each power module; detect the power cable wiring between the charging main cabinet and the multiple charging terminals; test the connection effectiveness of the power sharing module including multiple contactors; and test the wiring effectiveness between the multiple power modules and the shared power module.

[0101] An embodiment of the present invention further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the following steps can be implemented;

[0102] Detect the communication connections between the main controller and the power sharing module, the multiple power modules, and the multiple charging terminals; perform consistency detection on the driving of the multiple contactors in the power sharing module; perform module address detection on each power module; perform power cable wiring detection between the charging main cabinet and the multiple charging terminals; perform connection effectiveness testing on the multiple contactors included in the power sharing module; and perform wiring effectiveness testing between the multiple power modules and the shared power module.

[0103] The computer-readable storage medium may include: various media such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs that can store program codes.

[0104] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and technologies have not been shown in detail so as not to obscure the understanding of this specification.

[0105] Similarly, it should be understood that, in order to streamline this disclosure and assist in understanding one or more of the various inventive aspects, in the foregoing description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting an intention that: the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected by the following claims, the inventive aspects lie in less than all the features of the preceding single embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the present invention.

[0106] Those skilled in the art can understand that the modules in the devices in the embodiments can be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and in addition, they can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, any combination can be adopted to combine all the features disclosed in this specification (including the accompanying claims, abstract and drawings) and all the processes or units of any method or device so disclosed. Unless otherwise explicitly stated, each feature disclosed in this specification (including the accompanying claims, abstract and drawings) can be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0107] In addition, those skilled in the art can understand that although some of the embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

[0108] Each component embodiment of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all of the functions of some or all of the components according to the embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (for example, a computer program and a computer program product) for executing part or all of the methods described herein. Such a program for implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0109] It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

Claims

1. An automatic testing method for a split-type DC charging pile charging main cabinet, the charging main cabinet comprising a main controller, a power sharing module and a plurality of power modules, the input end of the power sharing module is electrically connected to the plurality of power modules, the output end of the power sharing module is electrically connected to a plurality of charging terminals, the main controller is communicatively connected with the power sharing module, the plurality of power modules and the plurality of charging terminals, the power sharing module comprises a plurality of contactors, a charging network topology is established through the plurality of contactors, characterized in that: The following steps are involved: detecting the communication connection between the main controller and the power sharing module, the multiple power modules and the multiple charging terminals; performing consistency detection on the plurality of contactor drives in the power sharing module; Perform module address detection on each power module; Performing power cable connection detection between the charging main cabinet and multiple charging terminals; Conducting connection validity testing on the power sharing module including multiple contactors; and A validity test is performed on the wiring between the plurality of power modules and the shared power module.

2. The automatic testing method for a split-type DC charging pile charging main cabinet according to claim 1, characterized in that: The step of detecting the communication connection between the main controller and the power sharing module, the multiple power modules and the multiple charging terminals includes: The main controller sends corresponding commands to the power sharing module, the multiple power modules and the multiple charging terminals according to the communication protocol type; The power sharing module, the multiple power modules and the multiple charging terminals send corresponding commands to the main controller according to the received commands corresponding data; The main controller determines whether the returned data meets the requirements of the corresponding communication protocol type.

3. The automatic testing method for a split-type DC charging pile charging main cabinet according to claim 1, characterized in that: The step of performing consistency detection on the plurality of contactors in the power sharing module comprises: Sending a drive signal to each of the contactors; The voltage of the feedback signal received from the contactor and the drive signal are determined, and when the voltage of the feedback signal matches the drive signal, it is determined that the contactor has passed the consistency test.

4. The automatic testing method for a split-type DC charging pile charging main cabinet according to claim 1, characterized in that: The steps of performing module address detection on each power module include: Disconnect the AC relays of all power modules; Check whether all power modules are in an offline state. When there is an online power module among all power modules, determine that the AC relay of the online power module is faulty. When all power modules are in an offline state, close the AC relay of the power module with the module address x; When the power module with the module address x is in an online state, it is determined that the module address setting of the power module with the module address x is correct; when the power module with the module address x is in an offline state, it is determined that the module address setting of the power module with the module address x is wrong; Disconnecting the AC relay of the power module with the module address x; Check whether the power module with the module address x is in an offline state. When the power module with the module address x is in an online state, determine that the AC relay of the power module with the module address x is faulty.

5. The automatic testing method for a split-type DC charging pile charging main cabinet according to claim 1, characterized in that: The step of performing power cable connection detection between the charging main cabinet and multiple charging terminals includes: Turn on the i-th power module; Detecting the output voltage of the output channel where the i-th power module is located; When the difference between the output voltage and the output voltage setting value of the i-th power module is within a preset range, it is determined that the power cable connection connected to the output channel is operating normally.

6. The automatic testing method for a split-type DC charging pile charging main cabinet according to claim 1, characterized in that: The steps for testing the connection effectiveness of a power sharing module including multiple contactors include: Closing the j-th contactor of the power sharing module; Turning on the power module connected to the j-th contactor; Determine whether the j-th contactor is connected to the charging terminal. When the j-th contactor is connected to the charging terminal, detect the voltage of the charging terminal. When the j-th contactor is not connected to the charging terminal, use the BFS algorithm to find the charging terminal closest to the j-th contactor, close all contactors from the power module connected to the j-th contactor to the charging terminal closest to the j-th contactor, and detect the voltage of the charging terminal closest to the j-th contactor. When the difference between the voltage of the charging terminal and the output voltage setting value of the power module is within a preset range, it is determined that the j-th contactor is effective.

7. The automatic testing method for a split-type DC charging pile charging main cabinet according to claim 1, characterized in that: The step of performing validity testing on the wiring between the plurality of power modules and the shared power module comprises: Put the i-th power module into the i-th output channel; The voltages of all output channels are detected, and when there is voltage only in the i-th output channel, it is determined that the connection between the i-th power module and the shared power module is correct.

8. An automatic testing system for a split-type DC charging pile charging main cabinet, the charging main cabinet comprising a main controller, a power sharing module and a plurality of power modules, the input end of the power sharing module is electrically connected to the plurality of power modules, the output end of the power sharing module is electrically connected to a plurality of charging terminals, the main controller is communicatively connected with the power sharing module, the plurality of power modules and the plurality of charging terminals, the power sharing module comprises a plurality of contactors, a charging network topology is established through the plurality of contactors, characterized in that: include: a communication connection detection unit, configured to detect the communication connection between the main controller and the power sharing module, the multiple power modules and the multiple charging terminals; a consistency detection unit, configured to perform consistency detection on the plurality of contactor drives in the power sharing module; A module address detection unit, used for performing module address detection on each power module; A power cable connection detection unit, used to detect the power cable connection between the charging main cabinet and multiple charging terminals; A first connection validity testing unit, used to perform a connection validity test on the power sharing module including a plurality of contactors; as well as The second connection validity testing unit performs validity testing on the connections between the plurality of power modules and the shared power module.

9. An automatic testing device for a split DC charging pile charging main cabinet, characterized in that: It comprises a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the steps of the automatic testing method for a split-type DC charging pile charging main cabinet are implemented as described in any one of claims 1 to 7.

10. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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