Feedback type aging test system and method based on small direct current charging pile

Abstract

The application discloses a feedback type aging test system and method based on a small direct-current charging pile, relates to the technical field of charging pile testing, and solves the technical problem that the existing charging pile detection equipment directly consumes electric energy by using a resistor, consumes a large amount of energy, seriously radiates heat, and cannot simultaneously verify in a large quantity, thereby restricting production efficiency; the application comprises an MES control module, a power distribution module, a detection module, a voltage boosting module, an inversion module and a user control module; the MES control module is used for generating an opening detection instruction, a power supply instruction and a power-off instruction; the detection module is used for generating a voltage boosting instruction, a voltage stopping instruction and a feedback signal; detection data of a charging pile to be tested are acquired in real time, aging information is generated based on the detection data; the small direct-current charging pile can be rapidly and accurately aged, most of the electric energy used for testing can be fed back to a power grid, and aging verification can be performed in a large quantity.

Description

Technical Field

[0001] This application belongs to the field of charging pile testing technology, specifically a feedback aging test system and method based on small DC charging piles. Background Technology

[0002] With the increasing popularity of electric vehicles, small DC charging stations have become an important energy replenishment device. These stations are low-power DC charging devices typically used to provide fast charging services for electric vehicles. Compared to traditional AC charging stations, small DC charging stations offer higher charging power and shorter charging times, hence they are also known as fast charging stations.

[0003] When using a small DC charging station, the electric vehicle's charging port needs to be connected to the charging gun of the charging station, and the charging process is then controlled by the charging station's control system. The performance and stability of the small DC charging station have a crucial impact on charging efficiency, requiring rigorous aging tests. Existing aging test equipment mostly uses resistors to directly consume electrical energy, resulting in high energy consumption, severe heat dissipation, and the inability to perform large-scale simultaneous verification, thus limiting production efficiency. This fails to meet the need for rapid and accurate testing of small DC charging stations. Therefore, it is necessary to develop a novel regenerative aging test device for small DC charging stations that can perform rapid and accurate aging tests while simultaneously feeding most of the electricity used in the test back to the power grid, and enabling large-scale aging verification. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems existing in the prior art; to this end, this application proposes a feedback aging test system and method based on small DC charging piles, which is used to solve the technical problem that existing charging pile testing equipment mostly uses resistors to directly consume electrical energy, which consumes a lot of energy, has serious heat dissipation, and cannot verify in large batches at the same time, thus restricting production efficiency. This application solves the above problems by setting up an inverter module and multiple gun heads.

[0005] To achieve the above objectives, the first aspect of this application provides a feedback aging test system and method based on a small DC charging pile, comprising:

[0006] MES control module, power distribution module, detection module, boost module, inverter module and user control module;

[0007] The detection module: It receives the start-up command and, when a charging pile to be tested is detected in the stacker crane, connects the test gun to the charging pile; it also acquires simulated charging information through the user control module and generates a boost command based on this information; it monitors the boost module's voltage in real time and generates a stop command and feedback signal based on the voltage and the boost command; and...

[0008] The system acquires real-time test data of the charging pile under test and generates aging information based on the test data. The test data includes charging voltage, charging current and charging time. The feedback signal is used to start the inverter module and establish a connection between the inverter module and the charging pile under test.

[0009] MES control module: used to acquire charging pile information, generate start-up detection commands and power supply commands; acquire aging information, and generate power-off commands based on the aging information;

[0010] User control module: Used by the aging test equipment to acquire information about the charging pile under test and simulate battery voltage, and to display the test results to the user.

[0011] Preferably, the boost module is used to obtain a boost command to control the voltage of the boost module to boost; and to obtain a stop command to disconnect the boost module from the charging pile under test.

[0012] Preferably, the inverter module is used to acquire feedback signals, establish a connection between the inverter module and the charging pile under test, and start the inverter module to convert the output of the charging pile under test into AC power and input it into the power grid.

[0013] Preferably, the power distribution module is used to obtain the power supply voltage in the power supply command, and use the power supply voltage to supply power to the charging pile under test; and to obtain the power off command to stop supplying power to the charging pile under test.

[0014] The detection module includes multiple detection nozzles for aging detection of the charging pile under test; the MES control module controls the operation of the entire aging test equipment and generates start detection command, power supply command, and power off command; the power distribution module includes multiple output lines for supplying power to the charging pile under test; the boost module simulates battery voltage to put the charging pile under test into operation; and the inverter module converts the output DC power of the charging pile under test into AC power.

[0015] This application involves placing the charging pile under test in an aging test station and connecting the power distribution module, the detection module, and the charging pile. The power distribution module converts the AC power from the grid into AC power suitable for the charging pile under test and supplies it with power. Once the charging pile under test starts operating, the connection between the boost module and the charging pile is disconnected, and the connection between the inverter module and the charging pile is established. The inverter module converts the DC power output from the charging pile under test into AC power and inputs it into the grid. The test module acquires the voltage and current of the DC power output from the charging pile under test in real time and evaluates the charging pile under test after charging is completed, generating aging information. Furthermore, the detection module, power distribution module, inverter module, and boost module of this application all have multiple output lines, allowing for simultaneous testing of several charging piles under test. This enables rapid and accurate aging testing of small DC charging piles, and allows most of the electricity used in the test to be fed back into the grid, while also enabling large-scale aging verification.

[0016] Preferably, the step of generating boost commands based on analog charging information includes:

[0017] The system acquires the analog voltage from the simulated charging information and generates a boost command based on the simulation. The simulated charging information is the battery information for simulated charging set by the user, including the analog voltage. The boost command is the instruction to control the boost module to perform voltage boosting.

[0018] This enables the boost module to simulate and generate the set battery voltage according to the boost command, allowing the charging pile under test to operate and charge.

[0019] Preferably, the generation of the voltage stop command and feedback signal based on the module voltage and the boost command includes:

[0020] Obtain the module voltage, extract the analog voltage from the boost command, and compare the module voltage with the analog voltage to see if they are the same; where the module voltage is the voltage of the boost module, and the analog voltage is the voltage of the boost module's simulated battery.

[0021] Yes, when the charging pile under test is detected to be running, a voltage stop command and a feedback signal are generated; the voltage stop command is used to control the boost module to disconnect the voltage; the feedback signal is used to control the operation of the inverter module.

[0022] If not, continue to acquire the module voltage and compare the module voltage with the analog voltage to see if they are the same.

[0023] This application determines whether the charging pile under test has entered the working state by comparing whether the module voltage is the same as the analog voltage. When the charging pile under test enters the working state, that is, after the output voltage of the charging pile under test stabilizes, a feedback signal is generated to avoid damage to the inverter module caused by voltage fluctuations and thus extend the service life of the inverter module.

[0024] Preferably, the real-time acquisition of the test data of the charging pile under test, and the generation of aging information based on the test data, includes:

[0025] The system acquires the charging voltage, charging current, and charging time from the test data of the charging pile under test; it then inputs these data into an aging model to obtain aging information; the aging model is trained using an artificial intelligence model; and the aging information includes the aging status of the existing charging pile under test.

[0026] Preferably, the aging model is obtained by training an artificial intelligence model, including:

[0027] Historical data is obtained from a database. The voltage, current, and corresponding charging time from the historical data, as well as the evaluation data of the charging pile by relevant experts, are integrated into several sets of training data and test data. The artificial intelligence model is trained using the training data, and the relevant parameters are tested and adjusted using the test data to obtain the input as detection data. Based on the detection data, expert evaluation data is generated, and the expert evaluation data is used as aging information to output the aging model. The artificial intelligence model includes a BP neural network model or an RBF neural network model.

[0028] This application uses a large amount of historical data to train and test an artificial intelligence model to obtain an aging model. By inputting the detection data into the aging model, aging information can be obtained, making the aging information more accurate and facilitating subsequent batch operations.

[0029] Preferably, the multiple detection heads of the detection module can simultaneously detect multiple charging piles under test, and the multiple output lines of the power distribution module can simultaneously charge multiple charging piles under test.

[0030] Preferably, the present application allows for batch testing of charging piles under test.

[0031] A second aspect of the present invention includes a feedback aging test method for a small DC charging pile:

[0032] Step 1: The MES control module controls the stacker crane to place the charging pile to be tested into the aging test station, presses down the control terminal, closes the relay of the power distribution module, and supplies power to the charging pile to be tested;

[0033] Step 2: Turn on the boost module to provide voltage to the charging pile under test to simulate battery voltage;

[0034] Step 3: When the charging pile under test detects that the battery voltage and the simulated voltage are consistent, the charging pile under test starts and converts the 220V AC power to DC power;

[0035] Step 4: At this point, disconnect the boost module from the charging pile under test, establish the connection between the inverter module and the charging pile under test, set the inverter module parameters, and convert the DC power output from the charging pile under test into AC power to feed back to the power grid.

[0036] Step 5: The detection module periodically uploads detection data to the MES control module. After the specified charging time is met, the charging pile under test stops charging, and the detection module reports the aging information to the MES control module.

[0037] Step six: After receiving the aging information, the MES control module controls the relay of the power distribution module to disconnect, lift the terminal, and control the stacker crane to move the charging pile under test out of the aging test station, waiting for the next charging pile to enter.

[0038] Compared with the prior art, the beneficial effects of this application are:

[0039] 1. This application involves placing the charging pile under test (DUT) in an aging test station, connecting the power distribution module and the detection module to the DUT; supplying power to the DUT, with the boost module simulating battery voltage to provide to the DUT, and the DUT starting operation; disconnecting the boost module from the DUT and establishing a connection between the inverter module and the DUT; the inverter module converting the DC output of the DUT into AC input to the power grid; the test module acquiring the voltage and current of the DC output of the DUT in real time, and evaluating the DUT after charging to generate aging information; simultaneously, the detection module, power distribution module, inverter module, and boost module of this application all have multiple output lines, allowing simultaneous testing of several DUTs; enabling rapid and accurate aging testing of small DC charging piles, and feeding most of the electricity used in the test back to the power grid, while also enabling large-scale aging verification.

[0040] 2. This application determines whether the charging pile under test has entered the working state by comparing whether the module voltage and the analog voltage are the same. When the charging pile under test enters the working state, that is, after the output voltage of the charging pile under test stabilizes, a feedback signal is generated to avoid damage to the inverter module caused by voltage fluctuations and thus extend the service life of the inverter module. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram illustrating the principle of this application;

[0043] Figure 2 This is a flowchart illustrating the method steps of this application;

[0044] Figure 3 Flowchart for sending instructions for this application. Detailed Implementation

[0045] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. 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 of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0046] Please see Figures 1-3 The first aspect of this application provides a feedback aging test system and method based on a small DC charging pile, including:

[0047] MES control module, power distribution module, detection module, boost module, inverter module and user control module;

[0048] The detection module: It receives the start-up command and connects the test gun to the charging pile under test when there is one in the stacker crane; it also acquires simulated charging information (including the voltage of the simulated battery and charging duration) through the user control module; it generates a boost command based on the simulated charging information; and it monitors the boost module voltage in real time, generating a stop command and feedback signal based on the module voltage and the boost command; and...

[0049] The system acquires real-time test data of the charging pile under test and generates aging information based on the test data. The test data includes charging voltage, charging current and charging time. The feedback signal is used to start the inverter module and establish a connection between the inverter module and the charging pile under test.

[0050] MES control module: used to acquire charging pile information, generate start-up detection commands and power supply commands; acquire aging information, and generate power-off commands based on the aging information;

[0051] User control module: Used by the aging test equipment to acquire information about the charging pile under test and simulate battery voltage, and to display the test results to the user.

[0052] The boost module is used to receive boost commands and control the voltage of the boost module to boost; and to receive stop commands and disconnect the boost module from the charging pile under test.

[0053] The inverter module is used to acquire feedback signals, establish a connection between the inverter module and the charging pile under test, and start the inverter module to convert the output of the charging pile under test into AC power and input it into the power grid.

[0054] The power distribution module is used to obtain the power supply voltage in the power supply command and use the power supply voltage to supply power to the charging pile under test; and to obtain the power off command to stop supplying power to the charging pile under test.

[0055] The testing module includes multiple testing nozzles for aging testing of the charging pile under test; the MES control module controls the operation of the entire aging test equipment and generates start-up, power-on, and power-off commands; the power distribution module includes multiple output lines for supplying power to the charging pile under test; the boost module simulates battery voltage to bring the charging pile under test into operation; and the inverter module converts the DC output of the charging pile under test into AC output.

[0056] This application involves placing the charging pile under test in an aging test station and connecting the power distribution module, the detection module, and the charging pile. The power distribution module converts the AC power from the grid into AC power suitable for the charging pile and supplies it with power. The boost module simulates the battery voltage and provides it to the charging pile. Once the charging pile starts operating, the connection between the boost module and the charging pile is disconnected, and the connection between the inverter module and the charging pile is established. The inverter module converts the DC power output from the charging pile into AC power and inputs it into the grid. The test module acquires the voltage and current of the DC power output from the charging pile in real time and evaluates the charging pile after charging is completed, generating aging information. Furthermore, the detection module, power distribution module, inverter module, and boost module of this application all have multiple output lines, allowing simultaneous testing of several charging piles under test. This enables rapid and accurate aging testing of small DC charging piles, and allows most of the electricity used in the test to be fed back into the grid, while also enabling large-scale aging verification.

[0057] Generate boost commands based on simulated charging information, including:

[0058] The system acquires the analog voltage from the simulated charging information and generates a boost command based on the simulation. The simulated charging information is the battery information for simulated charging set by the user, including the analog voltage. The boost command is the instruction to control the boost module to perform voltage boosting.

[0059] This enables the boost module to simulate and generate the set battery voltage according to the boost command, allowing the charging pile under test to operate and charge.

[0060] Based on the module voltage and boost command, a voltage stop command and feedback signal are generated, including:

[0061] Obtain the module voltage, extract the analog voltage from the boost command, and compare the module voltage with the analog voltage to see if they are the same; where the module voltage is the voltage of the boost module, and the analog voltage is the voltage of the boost module's simulated battery.

[0062] Yes, when the charging pile under test is detected to be running, a voltage stop command and a feedback signal are generated; the voltage stop command is used to control the boost module to disconnect the voltage; the feedback signal is used to control the operation of the inverter module.

[0063] If not, continue to acquire the module voltage and compare the module voltage with the analog voltage to see if they are the same.

[0064] This application determines whether the charging pile under test has entered the working state by comparing whether the module voltage is the same as the analog voltage. When the charging pile under test enters the working state, that is, after the output voltage of the charging pile under test stabilizes, a feedback signal is generated to avoid damage to the inverter module caused by voltage fluctuations and thus extend the service life of the inverter module.

[0065] Real-time acquisition of testing data from the charging pile under test, and generation of aging information based on the testing data, including:

[0066] The system acquires the charging voltage, charging current, and charging time from the test data of the charging pile under test; it then inputs these data into an aging model to obtain aging information; the aging model is trained using an artificial intelligence model; and the aging information includes the aging status of the existing charging pile under test.

[0067] The aging model is obtained through training an artificial intelligence model, including:

[0068] Historical data is obtained from a database. The voltage, current, and corresponding charging time from the historical data, as well as the evaluation data of the charging pile by relevant experts, are integrated into several sets of training data and test data. The artificial intelligence model is trained using the training data, and the relevant parameters are tested and adjusted using the test data to obtain the input as detection data. Based on the detection data, expert evaluation data is generated, and the expert evaluation data is used as aging information to output the aging model. The artificial intelligence model includes a BP neural network model or an RBF neural network model.

[0069] When this application performs aging tests on several charging piles to be tested, it acquires test data and sets test data numbers according to the different charging piles to be tested. It integrates several sets of test data to generate test data packages. The aging model can process the test data packages and generate corresponding aging information in batches for efficient testing.

[0070] This application uses a large amount of historical data to train and test an artificial intelligence model to obtain an aging model. By inputting the detection data into the aging model, aging information can be obtained, making the aging information more accurate and facilitating subsequent batch operations.

[0071] The detection module has multiple detection heads that can simultaneously detect multiple charging piles under test, and the power distribution module has multiple output lines that can simultaneously charge multiple charging piles under test.

[0072] This application allows for batch testing of charging piles under test.

[0073] A second aspect of the present invention includes a feedback aging test method for a small DC charging pile:

[0074] Step 1: The MES control module controls the stacker crane to place the charging pile to be tested into the aging test station, and controls the terminal to press down. Pressing down the terminal connects the power distribution module to the power grid; closes the relay of the power distribution module to supply power to the charging pile to be tested.

[0075] Step 2: Turn on the boost module to provide voltage to the charging pile under test to simulate battery voltage;

[0076] Step 3: When the charging pile under test detects that the battery voltage and the simulated voltage are consistent, the charging pile under test starts and converts the 220V AC power to DC power;

[0077] Step 4: At this point, disconnect the boost module from the charging pile under test, establish the connection between the inverter module and the charging pile under test, set the inverter module parameters, and convert the DC power output from the charging pile under test into AC power to feed back to the power grid.

[0078] Step 5: The detection module periodically uploads detection data to the MES control module. After the specified charging time is met, the charging pile under test stops charging, and the detection module reports the aging information to the MES control module.

[0079] Step six: After receiving the aging information, the MES control module controls the relay of the power distribution module to disconnect, lift the terminal, and control the stacker crane to move the charging pile under test out of the aging test station, waiting for the next charging pile to enter.

[0080] Some of the data in the above formula are calculated by removing dimensions and taking their numerical values. The formula is the closest to the real situation obtained by software simulation of a large amount of collected data. The preset parameters and preset thresholds in the formula are set by those skilled in the art according to the actual situation or obtained through simulation of a large amount of data.

[0081] How this application works:

[0082] The charging pile under test is placed in the aging test station, and the power distribution module and the detection module are connected to the charging pile under test. The power distribution module converts the AC power in the grid into AC power suitable for the charging pile under test and supplies power to the charging pile under test. The boost module simulates the battery voltage and provides it to the charging pile under test. The charging pile under test starts to run. The connection between the boost module and the charging pile under test is disconnected, and the connection between the inverter module and the charging pile under test is established. The inverter module converts the DC power output by the charging pile under test into AC power and inputs it into the grid. The test module acquires the voltage and current of the DC power output by the charging pile under test in real time, and evaluates the charging pile under test after charging is completed to generate aging information. At the same time, the detection module, power distribution module, inverter module and boost module of this application all have multiple output lines, which can test several charging piles under test at the same time. This enables fast and accurate aging tests on small DC charging piles, and can feed most of the electricity used for testing back to the grid, while also enabling large-scale aging verification.

[0083] The above embodiments are only used to illustrate the technical methods of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this application without departing from the spirit and scope of the technical methods of this application.

Claims

1. A feedback aging test system based on a small DC charging pile, characterized in that, include: The system comprises an MES control module, a power distribution module, a detection module, a boost module, an inverter module, and a user control module. Each of the detection, power distribution, inverter, and boost modules has multiple output lines, enabling simultaneous testing of several charging piles under test. Detection module: Receives the start detection command; when there is a charging pile to be tested in the stacker crane, connects the test gun head to the charging pile to be tested; and obtains simulated charging information through the user control module, and generates a boost command based on the simulated charging information. It also monitors the module voltage of the boost module in real time, and generates a stop command and feedback signal based on the module voltage and boost command, including: The module voltage is acquired, the analog voltage in the boost command is extracted, and the module voltage and the analog voltage are compared to see if they are the same. The module voltage is the voltage of the boost module, and the analog voltage is the voltage of the boost module's simulated battery. If yes, when the charging pile under test is detected to be running, a stop command and a feedback signal are generated. The feedback signal is used to control the operation of the inverter module. If no, the module voltage is acquired again, and the module voltage and the analog voltage are compared to see if they are the same. It also acquires the test data of the charging pile under test in real time and generates aging information based on the test data; the test data includes charging voltage, charging current and charging time, and the feedback signal is used to start the inverter module and establish the connection between the inverter module and the charging pile under test. The boost module is used to obtain boost commands and control the voltage of the boost module to boost; and to obtain stop commands and disconnect the boost module from the charging pile under test. MES control module: used to acquire charging pile information, generate start-up detection commands and power supply commands; acquire aging information, and generate power-off commands based on the aging information; The power distribution module is used to obtain the power supply voltage in the power supply command, and use the power supply voltage to supply power to the charging pile under test; and to obtain the power off command to stop supplying power to the charging pile under test. User control module: Used by the aging test system to acquire simulated charging information, which includes the battery information set by the user for simulated charging, including simulated voltage; and to display the test results to the user.

2. The feedback aging test system based on a small DC charging pile according to claim 1, characterized in that, The inverter module is used to acquire feedback signals, establish a connection between the inverter module and the charging pile under test, and start the inverter module to convert the output of the charging pile under test into AC power and input it into the power grid.

3. The regenerative aging test system based on a small DC charging pile according to claim 1, characterized in that, The real-time acquisition of detection data of the charging pile under test, and the generation of aging information based on the detection data, includes: The system acquires the charging voltage, charging current, and charging time from the test data of the charging pile under test; inputs the charging voltage, charging current, and charging time into the aging model to obtain aging information; the aging model is obtained through training an artificial intelligence model; the aging information is used to represent the aging status of the charging pile under test.

4. The regenerative aging test system based on a small DC charging pile according to claim 3, characterized in that, The aging model is obtained through training an artificial intelligence model, including: Historical data is obtained from a database. The voltage, current, and corresponding charging time in the historical data, as well as the evaluation data of relevant experts on the charging pile, are integrated into several sets of training data and test data. The artificial intelligence model is trained using the training data, and the relevant parameters are tested and adjusted using the test data. The input is the detection data. The expert evaluation data is generated based on the detection data, and the expert evaluation data is used as aging information as the output of the aging model. The artificial intelligence model includes a BP neural network model or an RBF neural network model.

5. A feedback aging test method based on a small DC charging pile, operating based on the feedback aging test system based on any one of claims 1 to 4, characterized in that, Includes the following steps: Step 1: The MES control module controls the stacker crane to place the charging pile to be tested into the aging test station, presses down the control terminal, closes the relay of the power distribution module, and supplies power to the charging pile to be tested; Step 2: Turn on the boost module to provide voltage to the charging pile under test to simulate battery voltage; Step 3: When the module voltage and the analog voltage are detected to be consistent, the charging pile under test starts and converts the 220V AC power to DC power; Step 4: At this point, disconnect the boost module from the charging pile under test, establish the connection between the inverter module and the charging pile under test, set the inverter module parameters, and convert the DC power output from the charging pile under test into AC power to feed back to the power grid. Step 5: The detection module periodically uploads detection data to the MES control module. After the specified charging time is met, the charging pile under test stops charging, and the detection module reports the aging information to the MES control module. Step six: After receiving the aging information, the MES control module controls the relay of the power distribution module to disconnect, lift the terminal, and control the stacker crane to move the charging pile under test out of the aging test station, waiting for the next charging pile to enter.

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