Three-phase AC charging compatibility test method and device for new energy vehicle

Abstract

The present invention relates to the technical field of electric vehicle charging, and particularly to a three-phase AC charging compatibility test method for new energy vehicles. The method includes: during the process of performing various three-phase AC charging tests on a vehicle, obtaining the charging parameters of each three-phase AC charging test of the vehicle, wherein the various three-phase AC charging tests include at least two of a three-phase AC power supply distortion test, a single-phase charging test, a connection confirmation function test, and a control guidance function test of the vehicle; determining whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test; if so, determining that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and outputting information on the three-phase AC charging compatibility of the vehicle. This method conducts a compatibility test on the three-phase AC charging of new energy vehicles, effectively tests the three-phase AC charging compatibility, and comprehensively evaluates the three-phase AC charging.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging, and in particular to a three-phase AC charging compatibility test method and device for new energy vehicles. Background Art

[0002] At present, three-phase AC charging is applicable to AC charging scenarios where the charging power requirement of new energy vehicles is 10 kW or more. Compared with single-phase AC charging, three-phase AC charging generally has the following characteristics:

[0003] 1) Higher charging power, larger current load, and more vulnerable to power interference;

[0004] 2) It involves the identification and switching between single-phase and three-phase AC charging;

[0005] 3) The grid power supply may be taken from the industrial grid, and the grid environment is more severe;

[0006] 4) During the charging process, it is necessary to detect whether the three-phase AC input is balanced, and a protection strategy for three-phase AC imbalance needs to be formulated.

[0007] Based on the above characteristics of three-phase AC charging, the existing test methods for three-phase AC charging of new energy vehicles are to test the single performance of three-phase AC charging, such as testing single-phase AC charging in three-phase AC charging, resulting in the problem of imperfect compatibility testing in the test methods for three-phase AC charging. Summary of the Invention

[0008] By providing a three-phase AC charging test method and device for new energy vehicles in the embodiments of the present application, the technical problem of imperfect compatibility testing for three-phase AC charging of new energy vehicles in the prior art is solved, the compatibility testing of three-phase AC charging of new energy vehicles is realized, the compatibility of three-phase AC charging of new energy vehicles is effectively tested, the three-phase AC charging is comprehensively evaluated, and it is beneficial to guiding the vehicle to improve the compatibility design of three-phase AC charging and other technical effects.

[0009] In a first aspect, an embodiment of the present invention provides a three-phase AC charging compatibility test method for a new energy vehicle, including:

[0010] During the process of performing various three-phase AC charging tests on the vehicle, obtain the charging parameters of each three-phase AC charging test of the vehicle, where the various three-phase AC charging tests include at least two of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control guidance function test of the vehicle;

[0011] Judge whether the charging parameters of each three-phase AC charging test meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test;

[0012] If so, determine that the three-phase AC charging compatibility of the vehicle meets the preset compatibility condition, and output information on the three-phase AC charging compatibility of the vehicle.

[0013] Preferably, if the multiple three-phase AC charging tests include the three-phase AC power distortion test, the method further includes:

[0014] During the process of performing the three-phase AC power distortion test on the vehicle, obtain the input current and input current waveform of the power battery of the vehicle, and use the input current and the input current waveform as the charging parameters for the three-phase AC power distortion, where the three-phase AC power distortion test is a test for controlling the three-phase AC power of the vehicle to output a special-shaped wave;

[0015] If the input current is within the input current threshold range and there is no feature of excessive ripple in the input current waveform, determine that the three-phase AC charging compatibility of the vehicle meets the compatibility of the three-phase AC power distortion test, where the feature of excessive ripple is the feature that the peak in the input current waveform exceeds the peak threshold and / or the feature that the trough in the input current waveform exceeds the trough threshold.

[0016] Preferably, if the multiple three-phase AC charging tests include the single-phase charging test, the method further includes:

[0017] During the process of performing the single-phase charging test on the vehicle, obtain multiple single-phase charging results of the vehicle, and determine the multiple single-phase charging results as the charging parameters for the single-phase charging test;

[0018] If all the multiple single-phase charging results meet the preset charging results, determine that the three-phase AC charging compatibility of the vehicle meets the compatibility of the single-phase charging test.

[0019] Preferably, the obtaining of the multiple single-phase charging parameters of the vehicle during the process of performing the single-phase charging test on the vehicle includes:

[0020] When starting the three-phase AC charging of the vehicle, control the voltage of a certain phase of the three-phase alternating current of the vehicle not to be within the voltage threshold range, control the voltages of the remaining two phases of the three-phase alternating current to be within the voltage threshold range, and in the case where the voltage difference between the remaining two phases of the alternating current is within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the first single-phase charging result;

[0021] When starting the three-phase AC charging, in the case where the voltage of a certain phase of the three-phase alternating current is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is not within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the second single-phase charging results;

[0022] When starting the three-phase AC charging, in the case where the voltage of a certain phase of the three-phase alternating current is within the voltage threshold range and the voltages of the remaining two phases of the three-phase alternating current are both not within the voltage threshold range, obtain the charging result of this phase of the alternating current, and determine the charging result of this phase of the alternating current as the third single-phase charging results.

[0023] Preferably, during the process of performing the single-phase charging test on the vehicle, obtain multiple single-phase charging parameters of the vehicle, including:

[0024] During the three-phase AC charging process of the vehicle, in the case where the voltage of a certain phase of the three-phase alternating current of the vehicle is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the fourth single-phase charging results;

[0025] During the three-phase AC charging process, in the case where the voltage of a certain phase of the three-phase alternating current is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is not within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the fifth single-phase charging results;

[0026] During the three-phase AC charging process, in the case where the voltage of a certain phase of the three-phase alternating current is within the voltage threshold range and the voltages of the remaining two phases of the three-phase alternating current are both not within the voltage threshold range, obtain the charging result of this phase of the alternating current, and determine the charging result of this phase of the alternating current as the sixth single-phase charging results.

[0027] Preferably, if the multiple three-phase AC charging tests include the connection confirmation function test, the method further includes:

[0028] During the process of performing the connection confirmation function test on the vehicle, obtain the CC resistance value of the vehicle and determine the CC resistance value of the vehicle as the charging parameter for the connection confirmation function test. Wherein, the connection confirmation function test is to detect the CC resistance value of the vehicle while controlling the charging gun head of the vehicle to change from a first resistance value to a second resistance value;

[0029] If the CC resistance value of the vehicle is within the preset resistance error range, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the connection confirmation function test.

[0030] Preferably, if the multiple three-phase AC charging tests include the control guidance function test, the method further includes:

[0031] During the process of performing the control guidance function test on the vehicle, obtain the CP frequency test result, CP peak test result, and CP duty cycle test result of the vehicle, and use the CP frequency test result, the CP peak test result, and the CP duty cycle test result as the charging parameters for the control guidance function test. Wherein, the control guidance function test is the CP frequency test, CP peak test, and CP duty cycle test of the vehicle;

[0032] If the CP frequency test result, the CP peak test result, and the CP duty cycle test result all meet the corresponding preset test results, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the control guidance function test. Wherein, the corresponding preset test result is the result that the three-phase AC charging compatibility of the vehicle meets the compatibility of the corresponding test in the control guidance function test.

[0033] Based on the same inventive concept, in a second aspect, the present invention further provides a three-phase AC charging compatibility test device for a new energy vehicle, including:

[0034] An acquisition module, configured to obtain the charging parameter of each three-phase AC charging test of the vehicle during the process of performing multiple three-phase AC charging tests on the vehicle. Wherein, the multiple three-phase AC charging tests include at least two of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control guidance function test of the vehicle;

[0035] A judgment module, configured to judge whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test; if so, determine that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and output the information of the three-phase AC charging compatibility of the vehicle.

[0036] Based on the same inventive concept, in a third aspect, the present invention provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the three-phase AC charging compatibility test method for new energy vehicles are implemented.

[0037] Based on the same inventive concept, in a fourth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps of the three-phase AC charging compatibility test method for new energy vehicles are implemented.

[0038] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0039] In the embodiments of the present invention, during the process of performing various three-phase AC charging tests on a vehicle, the charging parameters of each three-phase AC charging test of the vehicle are obtained. Among them, the various three-phase AC charging tests include at least two of the three-phase AC power supply distortion test, single-phase charging test, connection confirmation function test, and control guidance function test of the vehicle. Here, the three-phase AC power supply distortion test, single-phase charging test, connection confirmation function test, and control guidance function test are performed on the three-phase AC charging of new energy vehicles to improve the compatibility test of the three-phase AC charging of new energy vehicles.

[0040] Then, it is determined whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test. If so, it is determined that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and the information on the three-phase AC charging compatibility of the vehicle is output, so as to effectively test the three-phase AC charging compatibility of new energy vehicles, comprehensively evaluate the three-phase AC charging, and is beneficial to guiding the vehicle to improve the compatibility design of the three-phase AC charging. Description of the Drawings

[0041] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0042] Figure 1 A schematic flow chart of the steps of the three-phase AC charging compatibility test method for new energy vehicles in the embodiments of the present invention is shown;

[0043] Figure 2 A schematic structural diagram of the three-phase AC charging compatibility test system for new energy vehicles in the embodiments of the present invention is shown;

[0044] Figure 3The waveform diagram showing the abnormal wave with a quarter-cycle output cut off of the adjustable three-phase AC power supply in the embodiment of the present invention is shown;

[0045] Figure 4 The waveform diagram showing the abnormal CP wave output by the CP signal transmitter in the embodiment of the present invention is shown;

[0046] Figure 5 The module schematic diagram of the three-phase AC charging compatibility test device for new energy vehicles in the embodiment of the present invention is shown. Detailed implementation manners

[0047] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0048] Embodiment 1

[0049] The first embodiment of the present invention provides a method for testing the three-phase AC charging compatibility of a new energy vehicle, as Figure 1 shown, including:

[0050] S101, during the process of performing various three-phase AC charging tests on the vehicle, obtaining the charging parameters of each three-phase AC charging test of the vehicle, where the various three-phase AC charging tests include at least two of the three-phase AC power supply distortion test, single-phase charging test, connection confirmation function test, and control guidance function test of the vehicle;

[0051] S102, determining whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test;

[0052] S103, if so, determining that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions and outputting the information on the three-phase AC charging compatibility of the vehicle.

[0053] The method for testing the three-phase AC charging compatibility of the new energy vehicle in this embodiment is applied in the three-phase AC charging compatibility test system of the new energy vehicle. As Figure 2 shown, the three-phase AC charging compatibility test system of the new energy vehicle includes an adjustable three-phase AC power supply, a CP signal transmitter, an adjustable CC resistance charging gun head, an AC charging socket, an on-vehicle charger, a power battery, an oscilloscope 1, an oscilloscope 2, and a CAN message acquisition device. Among them, the AC charging socket, the on-vehicle charger, and the power battery are original components on the vehicle.

[0054] The three-phase interfaces L1 / L2 / L3, N interface, and PE interface of the adjustable three-phase AC power supply are respectively connected one-to-one with the three-phase interfaces L1 / L2 / L3, N interface, and PE interface of the adjustable CC resistance charging gun head. The CP interface of the CP signal transmitter is connected to the CP interface of the adjustable CC resistance charging gun head. The adjustable three-phase AC power supply is used to adjust the waveform of each phase of the alternating current and can also turn off any phase of the power supply. The CP signal transmitter is used to adjust the waveform of the CP signal, CP signal frequency, CP peak voltage, and CP duty cycle. The adjustable CC resistance charging gun head is used to adjust the CC resistance value of the charging gun head and is also used to connect to the AC charging socket to charge the vehicle.

[0055] It should be noted that the CP signal is a control and guidance function signal. The full English name of CP is Control Pilot Function. This signal is mainly used to monitor the functions of the interaction between an electric vehicle and an electric vehicle power supply device (such as a charging pile). The CC resistance value is the connection confirmation function resistance value. The full English name of CC is Connection Confirm Function. This resistance value reflects the connection status between the vehicle plug and the vehicle, and / or the connection status between the power supply plug and the charging device. For example, the CC resistance value of the adjustable CC resistance charging gun head reflects the connection status of the charging gun head. The CC resistance value between the AC charging socket and the on-vehicle charger reflects the connection status between the AC charging socket and the on-vehicle charger.

[0056] The three-phase interfaces L1 / L2 / L3, N interface, PE interface, CP interface, and CC interface of the AC charging socket are respectively connected one-to-one with the three-phase interfaces L1 / L2 / L3, N interface, PE interface, CP interface, and CC interface of the on-vehicle charger. The DC+ interface (DC current positive interface), DC- interface (DC current negative interface), CANH interface, and CANL interface of the on-vehicle charger are respectively connected one-to-one with the DC+ interface, DC- interface, CANH interface, and CANL interface of the power battery.

[0057] Both oscilloscope 1 and oscilloscope 2 are oscilloscopes with no less than 3 sampling channels. The 3 sampling channels of oscilloscope 1 are respectively connected to the three-phase wires between the adjustable three-phase AC power supply and the adjustable CC resistance charging gun head. Oscilloscope 1 is used to collect the waveform of each phase of the three-phase alternating current between the adjustable three-phase AC power supply and the adjustable CC resistance charging gun head. The two sampling channels of oscilloscope 2 are respectively connected to the two-phase wires between the on-vehicle charger and the power battery. Oscilloscope 2 is used to collect the waveform of each phase of the two-phase direct current between the on-vehicle charger and the power battery.

[0058] The two channels of the CAN message acquisition device are respectively connected to the CANH line and CANL line between the on-vehicle charger and the power battery, and it is used to collect the CAN signals connected by the CANH line and CANL line.

[0059] Next, in combination with Figure 1 and Figure 2 the following will introduce in detail the specific implementation steps of the three-phase AC charging compatibility test method for the new energy vehicle provided in this embodiment:

[0060] First, execute step S101. During the process of performing various three-phase AC charging tests on the vehicle, obtain the charging parameters of each three-phase AC charging test of the vehicle. Among them, the various three-phase AC charging tests include at least two of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control guidance function test of the vehicle.

[0061] Specifically, in the case where the various three-phase AC charging tests include the three-phase AC power distortion test, during the process of performing the three-phase AC power distortion test on the vehicle, obtain the input current and input current waveform of the power battery of the vehicle, and use the input current and input current waveform as the charging parameters of the three-phase AC power distortion. Among them, the three-phase AC power distortion test is a test for controlling the three-phase AC power output of the vehicle to output abnormal waves.

[0062] In the specific implementation process, the three-phase AC power distortion test is to test whether the power battery can be normally charged and whether there is an excessive ripple in the input current waveform of the power battery under the condition of controlling the adjustable three-phase AC power to output various abnormal waves. Observe the abnormal waves output by the adjustable three-phase AC power through oscilloscope 1, that is, the voltage waveform output by the adjustable three-phase AC power. Observe the input current waveform of the power battery through oscilloscope 2. The abnormal waves output by the adjustable three-phase AC power include, but are not limited to, abnormal waves with a quarter-cycle drop, abnormal waves with a half-cycle drop, or abnormal waves with a sudden load drop and pit. As Figure 3 shown, control the adjustable three-phase AC power to output an abnormal wave with a quarter-cycle drop, that is, each phase of alternating current in the three-phase AC power drops a quarter-cycle. In Figure 3 the peak threshold of the abnormal wave with a quarter-cycle drop output by the adjustable three-phase AC power is +300 mA, and the valley threshold is -300 mA, where the plus and minus signs represent the direction of the wave.

[0063] If the input current is within the input current threshold range and there is no feature of excessive ripple in the input current waveform, it indicates that the power battery is being normally charged, and during the charging process of the power battery, the life and safety of the power battery are not damaged. Then it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the three-phase AC power distortion test. Among them, the feature of excessive ripple is the feature that the peak in the input current waveform exceeds the peak threshold and / or the feature that the trough in the input current waveform exceeds the trough threshold. The compatibility of the three-phase AC power distortion test is the performance of normally charging the power battery without damaging the power battery under the condition that the three-phase AC power outputs a distorted wave. The input current threshold range, the peak threshold, and the trough threshold are all set according to actual requirements.

[0064] If the input current is not within the input current threshold range, or there is a feature of excessive ripple in the input current waveform, it indicates that the power battery is being abnormally charged, or during the charging process of the power battery, the life and safety of the power battery are damaged to a certain extent. Then it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the three-phase AC power distortion test.

[0065] Take Figure 3 the control of the adjustable three-phase AC power supply to output a distorted wave that loses a quarter of a cycle as an example, that is, each phase of alternating current in the three-phase AC power supply loses a quarter of a cycle, and this distorted wave is used for the three-phase AC power distortion test. During the three-phase AC power distortion test of the vehicle, the input current and the input current waveform of the power battery of the vehicle are obtained. Among them, the input current waveform is displayed by oscilloscope 2. The peak of the input current waveform displayed by oscilloscope 2 is +1.5 A, and the trough is -1.5 A. The plus and minus signs indicate the direction of the wave.

[0066] If the input current is within the input current threshold range, it indicates that the power battery is being normally charged, and there is no feature of excessive ripple in the input current waveform, that is, there is no peak feature exceeding 1.5 A and / or trough feature exceeding -1.5 A in the input current waveform, indicating that during the charging process of the power battery, the life and safety of the power battery are not damaged. Then it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the three-phase AC power distortion test.

[0067] If the input current is not within the input current threshold range, it indicates that the power battery is being abnormally charged, or there is a feature of excessive ripple in the input current waveform, that is, there is a peak feature exceeding 1.5 A and / or trough feature exceeding -1.5 A in the input current waveform, indicating that during the charging process of the power battery, the life and safety of the power battery are damaged to a certain extent. Then it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the three-phase AC power distortion test.

[0068] In this embodiment, by performing a three-phase AC power distortion test on the vehicle, the charging parameters of the three-phase AC power distortion test are obtained, that is, the input current and the input current waveform of the power battery of the vehicle. Then, by determining that the input current is within the input current threshold and there is no feature of excessive ripple in the input current waveform, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the three-phase AC power distortion test, effectively verifying the three-phase AC charging compatibility of the new energy vehicle under the three-phase AC power distortion test.

[0069] In the case of various three-phase AC charging tests including single-phase charging tests, during the process of performing a single-phase charging test on the vehicle, multiple single-phase charging results of the vehicle are obtained, and the multiple single-phase charging results are determined as the charging parameters of the single-phase charging test. The single-phase charging test is to test the single-phase AC charging function in the three-phase AC of the vehicle.

[0070] If multiple single-phase charging results all meet the preset charging results, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the single-phase charging test. Among them, the preset charging result is the result of charging the power battery through a certain single-phase AC in the three-phase AC of the vehicle. The compatibility of the single-phase charging test is the performance of charging the power battery through any one of the three-phase ACs of the vehicle.

[0071] If a certain single-phase charging result among the multiple single-phase charging results does not meet the preset charging result, it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the single-phase charging test.

[0072] The specific process of the single-phase charging test is as follows:

[0073] Scenario 1, when the three-phase AC charging of the vehicle is turned on, control the voltage of a certain phase of the three-phase AC of the vehicle not to be within the voltage threshold range, control the voltages of the other two phases of the three-phase AC to be within the voltage threshold range, and the voltage difference between the other two phases of the AC is within the preset difference range. In this case, obtain the charging results of the other two phases of the AC, and determine the charging results of the other two phases of the AC as the first single-phase charging result. Among them, the voltage threshold range and the preset difference range are set according to actual needs.

[0074] For example, when the three-phase AC charging of the vehicle is turned on, control the voltage of L1 in the three-phase AC L1 / L2 / L3 of the vehicle not to be within the voltage threshold range, control the voltages of L2 and L3 to be within the voltage threshold range, and the voltage difference between L2 and L3 is within the preset difference range. In this control case, L1 cannot charge the power battery, and there is one phase of AC power among L2 and L3 that can charge the power battery, or neither L2 nor L3 can charge the power battery. The first single-phase charging result includes the charging results of L2 and L3 in this control case.

[0075] Assume that in this control scenario, L1 cannot charge the power battery, L2 can charge the power battery, L3 cannot charge the power battery, and the charging result of L2 conforms to the preset charging result.

[0076] It should also be noted that in Scenario 1, since the voltage of a certain phase of the three-phase alternating current for controlling the vehicle is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is within the preset difference range. Then, there are three control scenarios in Scenario 1.

[0077] For example, in Control Scenario 1, the voltage of L1 in the three-phase alternating current L1 / L2 / L3 for controlling the vehicle is not within the voltage threshold range, the voltages of L2 and L3 are both within the voltage threshold range, and the voltage difference between L2 and L3 is within the preset difference range. Control Scenario 2 is a scenario where the voltage of L2 in the three-phase alternating current L1 / L2 / L3 for controlling the vehicle is not within the voltage threshold range, the voltages of L1 and L3 are both within the voltage threshold range, and the voltage difference between L1 and L3 is within the preset difference range. Control Scenario 3 is a scenario where the voltage of L3 in the three-phase alternating current L1 / L2 / L3 for controlling the vehicle is not within the voltage threshold range, the voltages of L1 and L2 are both within the voltage threshold range, and the voltage difference between L1 and L2 is within the preset difference range. Therefore, the first single-phase charging result includes the charging results of the three control scenarios in the above Scenario 1.

[0078] In Scenario 2, when three-phase AC charging is enabled, in a situation where the voltage of a certain phase of the three-phase alternating current is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is not within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the second single-phase charging result.

[0079] For example, when three-phase AC charging of the vehicle is enabled, the voltage of L1 in the three-phase alternating current L1 / L2 / L3 of the vehicle is not within the voltage threshold range, the voltages of L2 and L3 are both within the voltage threshold range, and the voltage difference between L2 and L3 is not within the preset difference range. In this control scenario, L1 cannot charge the power battery, and there is one phase of alternating current in L2 and L3 that can charge the power battery, or none of the alternating currents in L2 and L3 can charge the power battery. The second single-phase charging result includes the charging results of L2 and L3 in this control scenario.

[0080] Assume that in this control scenario, L1 cannot charge the power battery, L3 can charge the power battery, L2 cannot charge the power battery, and the charging result of L3 meets the preset charging result.

[0081] It should also be noted that in Scenario 2, since the voltage of a certain phase of the three-phase alternating current of the controlled vehicle is not within the voltage threshold range, the voltages of the other two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the other two phases of the alternating current is not within the preset difference range. Then, there are three control scenarios in Scenario 2.

[0082] For example, in Control Scenario 1, the voltage of L1 in the three-phase alternating current L1 / L2 / L3 of the controlled vehicle is not within the voltage threshold range, the voltages of L2 and L3 are both within the voltage threshold range, and the voltage difference between L2 and L3 is not within the preset difference range. Control Scenario 2 is a scenario where the voltage of L2 in the three-phase alternating current L1 / L2 / L3 of the controlled vehicle is not within the voltage threshold range, the voltages of L1 and L3 are both within the voltage threshold range, and the voltage difference between L1 and L3 is not within the preset difference range. Control Scenario 3 is a scenario where the voltage of L3 in the three-phase alternating current L1 / L2 / L3 of the controlled vehicle is not within the voltage threshold range, the voltages of L1 and L2 are both within the voltage threshold range, and the voltage difference between L1 and L2 is not within the preset difference range. Therefore, the second single-phase charging result includes the charging results of the three control scenarios in Scenario 2 above.

[0083] In Scenario 3, when three-phase AC charging is enabled, in the case where the voltage of a certain phase of the three-phase alternating current is within the voltage threshold range and the voltages of the other two phases of the three-phase alternating current are both not within the voltage threshold range, obtain the charging result of this phase of the alternating current, and determine the charging result of this phase of the alternating current as the third single-phase charging result.

[0084] For example, when three-phase AC charging of the vehicle is enabled, the voltage of L1 in the three-phase alternating current L1 / L2 / L3 of the vehicle is within the voltage threshold range, and the voltages of L2 and L3 are both not within the voltage threshold range. In this control scenario, L2 and L3 cannot charge the power battery, and only L1 can charge the power battery. The third single-phase charging result includes the charging result of L1 in this control scenario.

[0085] Assume that in this control scenario, L1 can charge the power battery, then the charging result of L1 meets the preset charging result.

[0086] It should also be noted that in Scenario 3, there is a situation where the voltage of a certain phase of the three-phase alternating current is within the voltage threshold range, and the voltages of the remaining two phases of the three-phase alternating current are not within the voltage threshold range. Then, there are three control situations in Scenario 3.

[0087] For example, Control Situation 1 is a situation where the voltage of L1 in the three-phase alternating current L1 / L2 / L3 of the vehicle is within the voltage threshold range, and the voltages of L2 and L3 are not within the voltage threshold range. Control Situation 2 is a situation where the voltage of L2 in the three-phase alternating current L1 / L2 / L3 of the vehicle is within the voltage threshold range, and the voltages of L1 and L3 are not within the voltage threshold range. Control Situation 3 is a situation where the voltage of L3 in the three-phase alternating current L1 / L2 / L3 of the vehicle is within the voltage threshold range, and the voltages of L1 and L2 are not within the voltage threshold range. Therefore, the third single-phase charging result includes the charging results of the three control situations in the above Scenario 3.

[0088] Scenario 4: During the three-phase AC charging process, when the voltage of a certain phase of the three-phase alternating current is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the fourth single-phase charging result.

[0089] For example, during the three-phase AC charging of the vehicle, control the voltage of L1 in the three-phase alternating current L1 / L2 / L3 of the vehicle not to be within the voltage threshold range, control the voltages of L2 and L3 to be within the voltage threshold range, and the voltage difference between L2 and L3 is within the preset difference range. In this control situation, L1 cannot charge the power battery, and there is one phase of alternating current among L2 and L3 that can charge the power battery, or neither L2 nor L3 can charge the power battery. The fourth single-phase charging result includes the charging results of L2 and L3 in this control situation.

[0090] Assume that in this control situation, L1 cannot charge the power battery, L2 can charge the power battery, L3 cannot charge the power battery, and the charging result of L2 meets the preset charging result.

[0091] It should also be noted that in Scenario 4, there is a situation where the voltage of a certain phase of the three-phase alternating current controlling the vehicle is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is within the preset difference range. Then, there are three control situations in Scenario 4. The three control situations in Scenario 4 can be known according to the control situation in Scenario 1, which will not be elaborated here. Moreover, the fourth single-phase charging result includes the charging results of the three control situations in Scenario 4.

[0092] Scenario 5: During the three-phase AC charging process, when the voltage of a certain phase of the three-phase alternating current controlling the vehicle is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is not within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the fifth single-phase charging result.

[0093] For example, during the three-phase AC charging of the vehicle, control the voltage of L1 in the three-phase alternating current L1 / L2 / L3 of the vehicle not to be within the voltage threshold range, control the voltages of L2 and L3 to be both within the voltage threshold range, and the voltage difference between L2 and L3 not to be within the preset difference range. In this control situation, L1 cannot charge the power battery, and there is one phase of alternating current in L2 and L3 that can charge the power battery, or none of the alternating currents in L2 and L3 can charge the power battery. The fifth single-phase charging result includes the charging results of L2 and L3 in this control situation.

[0094] Assume that in this control situation, L1 cannot charge the power battery, L3 can charge the power battery, L2 cannot charge the power battery, and the charging result of L3 meets the preset charging result.

[0095] It should also be noted that in Scenario 5, there is a situation where the voltage of a certain phase of the three-phase alternating current controlling the vehicle is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is not within the preset difference range. Then, there are three control situations in Scenario 5. The three control situations in Scenario 5 can be known according to the control situation in Scenario 2, which will not be elaborated here. Moreover, the fifth single-phase charging result includes the charging results of the three control situations in Scenario 5.

[0096] Scenario 6: During the three-phase AC charging process, when the voltage of a certain phase of the three-phase alternating current is within the voltage threshold range and the voltages of the remaining two phases of the three-phase alternating current are both not within the voltage threshold range, obtain the charging result of this phase of the alternating current, and determine the charging result of this phase of the alternating current as the sixth single-phase charging result.

[0097] For example, during the three-phase AC charging of a vehicle, the voltage of L1 in the three-phase AC power supply L1 / L2 / L3 of the vehicle is controlled within the voltage threshold range, and the voltages of L2 and L3 are both not within the voltage threshold range. In this control situation, L2 and L3 cannot charge the power battery, and only L1 can charge the power battery. The sixth single-phase charging result includes the charging result of L1 in this control situation.

[0098] Assume that in this control situation, L1 can charge the power battery, then the charging result of L1 conforms to the preset charging result.

[0099] It should also be noted that in Scenario 6, since the voltage of a certain phase of the three-phase AC power supply is controlled within the voltage threshold range, and the voltages of the other two phases of the three-phase AC power supply are both not within the voltage threshold range. Then, there are three control situations in Scenario 6. According to the control situations in Scenario 3, the three control situations in Scenario 6 can be known, which will not be elaborated here. And the sixth single-phase charging result includes the charging results of the three control situations in Scenario 6.

[0100] After obtaining the first single-phase charging result, the second single-phase charging result, the third single-phase charging result, the fourth single-phase charging result, the fifth single-phase charging result, and the sixth single-phase charging result, it is determined whether each single-phase charging result conforms to the preset charging result. If each single-phase charging result conforms to the preset charging result, it means that the charging result of each control situation in each single-phase charging result can achieve the charging of the power battery by single-phase AC power, and it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the single-phase charging test. If a certain single-phase charging result among these single-phase charging results does not conform to the preset charging result, it means that the charging result of this phase fails to achieve the charging of the power battery by single-phase AC power, and it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the single-phase charging test.

[0101] In this embodiment, by performing a single-phase charging test on the vehicle, the charging parameters of the single-phase charging test are obtained, that is, multiple single-phase charging results. Then, by determining that each single-phase charging result conforms to the preset charging result, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the single-phase charging test, effectively testing the three-phase AC charging compatibility of new energy vehicles under the single-phase charging test, that is, effectively testing the performance of switching the three-phase AC power of the vehicle into single-phase AC power.

[0102] In the case of multiple three-phase AC charging tests including connection confirmation function tests, during the process of conducting a connection confirmation function test (i.e., CC test) on a vehicle, obtain the CC resistance value of the vehicle and determine the CC resistance value of the vehicle as the charging parameter for the connection confirmation function test. Among them, the connection confirmation function test is to detect the CC resistance value of the vehicle while controlling the charging gun head of the vehicle to change from a first resistance value to a second resistance value. The second resistance value is much larger than the first resistance value, and both the first resistance value and the second resistance value are set according to actual requirements.

[0103] If the CC resistance value of the vehicle is within the preset resistance value error range, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the connection confirmation function test. Among them, the compatibility of the connection confirmation function test is the compatibility performance of the connection confirmation function during the three-phase AC charging process of the vehicle. The preset resistance value error range is the error range of the CC resistance value of the charging gun head, and its specific value is set according to actual requirements.

[0104] If the CC resistance value of the vehicle is not within the preset resistance value error range, it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the connection confirmation function test.

[0105] Specifically, for the connection confirmation function CC test, while controlling the CC resistance value of the adjustable CC resistance value charging gun head to change from 80Ω to 5kΩ, obtain the CC resistance value of the vehicle through the CAN message acquisition device. If the CC resistance value of the vehicle is within the preset resistance value error range, indicating that the vehicle can correctly identify the CC resistance and the charging gun head can charge the vehicle, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the connection confirmation function test. If the CC resistance value of the vehicle is not within the preset resistance value error range, indicating that the vehicle fails to correctly identify the CC resistance and the charging gun head cannot charge the vehicle, it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the connection confirmation function test.

[0106] For example, when controlling the CC resistance value of the adjustable CC resistance value charging gun head to be 200Ω, obtain the CC resistance value of the vehicle as 210Ω through the CAN message acquisition device. Assuming that the preset resistance value error range is ±50Ω of the CC resistance value of the charging gun head, and the CC resistance value of the vehicle 210Ω is within 200±50Ω, indicating that the vehicle can correctly identify the CC resistance and the charging gun head can charge the vehicle, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the connection confirmation function test.

[0107] In this embodiment, by performing a connection confirmation function CC test on the vehicle, the charging parameters of the connection confirmation function CC test, that is, the CC resistance value of the vehicle, are obtained. Then, by determining that the CC resistance value of the vehicle is within the preset resistance error range, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the connection confirmation function test, effectively testing the three-phase AC charging compatibility of new energy vehicles under the connection confirmation function test.

[0108] In the case of various three-phase AC charging tests including the control and guidance function test, during the process of performing the control and guidance function test (i.e., CP test) on the vehicle, the CP frequency test result, CP peak test result, and CP duty cycle test result of the vehicle are obtained, and the CP frequency test result, CP peak test result, and CP duty cycle test result are used as the charging parameters of the control and guidance function test. Among them, the control and guidance function test is the CP frequency test, CP peak test, and CP duty cycle test of the vehicle.

[0109] If the CP frequency test result, CP peak test result, and CP duty cycle test result all meet the corresponding preset test results, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the control and guidance function test. Among them, the corresponding preset test result is the result that the three-phase AC charging compatibility of the vehicle meets the compatibility of the corresponding test in the control and guidance function test. The compatibility of the control and guidance function test is the compatible performance of the control and guidance function during the three-phase AC charging process of the vehicle.

[0110] If a certain test result among the CP frequency test result, CP peak test result, and CP duty cycle test result does not meet the corresponding preset test result, it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the control and guidance function test.

[0111] Specifically, for the CP frequency test, during the process of controlling the CP frequency of the charging gun head to vary within the range of 900 Hz to 1100 Hz through the CP signal transmitter, the CP frequency of the vehicle is obtained through the CAN message acquisition device. If the CP frequency of the vehicle is within the preset frequency error range, indicating that the vehicle can correctly identify the CP frequency and the charging gun head can charge the vehicle, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the CP frequency test in the connection confirmation function test. Among them, the preset frequency error range is the error range of the CP frequency of the charging gun head, and its specific value is set according to actual requirements.

[0112] If the CP frequency of the vehicle is not within the preset frequency error range, indicating that the vehicle fails to correctly identify the CP frequency and the charging gun head cannot charge the vehicle, it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the CP frequency test in the connection confirmation function test.

[0113] For example, when the CP frequency of the charging gun head is controlled to be 1000 Hz by the CP signal transmitter, the CP frequency of the vehicle is obtained as 1080 Hz through the CAN message acquisition device. Assuming that the preset frequency error range is the CP frequency of the charging gun head ±100, and 1080 Hz is within the range of 1000 ± 100 Hz, it means that the vehicle can correctly identify the CP frequency and the charging gun head can charge the vehicle. Then, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the CP frequency test in the connection confirmation function test.

[0114] For the CP peak value test, before the charging gun head is connected to the AC charging socket, the initial CP peak value of the charging gun head is controlled to fluctuate within the initial peak value threshold range of 12 V ± 0.8 V through the CP signal transmitter. After the charging gun head is connected to the AC charging socket and before the S2 switch of the vehicle is closed, the first CP peak value of the vehicle is obtained. Here, the S2 switch of the vehicle is the vehicle charging switch specified by the national standard.

[0115] If the first CP peak value fluctuates within the first peak value threshold range of 9 V ± 0.8 V, it means that the vehicle can correctly identify the first CP peak value after the charging gun head is connected to the AC charging socket and before the S2 switch of the vehicle is closed. Then, the S2 switch is closed. If the first CP peak value does not fluctuate within the first peak value threshold range of 9 V ± 0.8 V, it means that the vehicle fails to correctly identify the first CP peak value and there is a fault in the three-phase AC charging of the vehicle. Then, relevant information indicating that there is a fault in the CP peak value test is output.

[0116] After the S2 switch is closed, the second CP peak value of the vehicle is obtained. If the second CP peak value fluctuates within the second peak value threshold range of 6 V ± 0.8 V, it means that the vehicle can correctly identify the second CP peak value and can perform three-phase AC charging on the vehicle. Then, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the CP peak value test in the connection confirmation function test. If the second CP peak value does not fluctuate within the second peak value threshold range of 6 V ± 0.8 V, it means that the vehicle fails to correctly identify the second CP peak value and cannot perform three-phase AC charging on the vehicle. Then, it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the CP peak value test in the connection confirmation function test.

[0117] During the CP duty cycle test, after the special-shaped CP wave is output by the CP signal transmitter, the CP duty cycle of the vehicle is obtained. If the CP duty cycle of the vehicle is within the duty cycle threshold range, it indicates that the vehicle can correctly identify the CP duty cycle and can perform three-phase AC charging on the vehicle. Then it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the CP duty cycle test in the connection confirmation function test. If the CP duty cycle of the vehicle is not within the duty cycle threshold range, it indicates that the vehicle fails to correctly identify the CP duty cycle and cannot perform three-phase AC charging on the vehicle. Then it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the CP duty cycle test in the connection confirmation function test.

[0118] If the CP frequency test result, CP peak test result, and CP duty cycle test result all meet the corresponding preset test results, it indicates that the three-phase AC charging compatibility of the vehicle meets the compatibility of the CP frequency test, CP peak test, and CP duty cycle test in the connection confirmation function test. Then it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the control and guidance function test. If a certain test result among the CP frequency test result, CP peak test result, and CP duty cycle test result does not meet the corresponding preset test result, it indicates that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of any test in the connection confirmation function test. Then it is determined that the three-phase AC charging compatibility of the vehicle does not meet the compatibility of the control and guidance function test.

[0119] It should also be noted that as Figure 4 shown, the special-shaped CP wave output by the CP signal transmitter includes but is not limited to the special-shaped CP wave with a rising edge as a ramp in the first coordinate as Figure 4 shown, the special-shaped CP wave with a falling edge as a ramp in the second coordinate as Figure 4 shown, a special-shaped CP wave with a zero-crossing distortion in the third coordinate as Figure 4 shown, or another special-shaped CP wave with a zero-crossing distortion in the fourth coordinate as Figure 4 shown.

[0120] In this embodiment, by performing the control and guidance function CP test on the vehicle, the charging parameters of the control and guidance function test are obtained, that is, the CP frequency test result, CP peak test result, and CP duty cycle test result of the vehicle. Then, by determining that the CP frequency test result, CP peak test result, and CP duty cycle test result of the vehicle all meet the corresponding preset test results, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the control and guidance function test, effectively testing the three-phase AC charging compatibility of new energy vehicles under the control and guidance function test.

[0121] Next, step S102 is executed to determine whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test. Then, step S103 is executed. If so, it is determined that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and the information on the three-phase AC charging compatibility of the vehicle is output.

[0122] Specifically, in the three-phase AC power distortion test, if the charging parameters of the three-phase AC power distortion test meet the preset parameter conditions corresponding to the three-phase AC power distortion test, it means that the input current of the vehicle obtained in the three-phase AC power distortion test is within the input current threshold range, and there are no characteristics of excessive ripple in the input current waveform of the vehicle. Then, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the three-phase AC power distortion test.

[0123] In the single-phase charging test, if the charging parameters of the single-phase charging test meet the preset parameter conditions corresponding to the single-phase charging test, it means that multiple single-phase charging results obtained in the single-phase charging test all meet the preset charging results. Then, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the single-phase charging test.

[0124] In the connection confirmation function test, if the charging parameters of the connection confirmation function test meet the preset parameter conditions corresponding to the connection confirmation function test, it means that the CC resistance value obtained in the connection confirmation function test is within the preset resistance error range. Then, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the connection confirmation function test.

[0125] In the control and guidance function test, if the charging parameters of the control and guidance function test meet the preset parameter conditions corresponding to the control and guidance function test, it means that the CP frequency test result, CP peak test result, and CP duty cycle test result obtained in the control and guidance function test all meet the corresponding preset test results. Then, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the control and guidance function test.

[0126] If the three-phase AC charging compatibility of the vehicle meets the compatibility of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control and guidance function test, it is determined that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and the information on the three-phase AC charging compatibility of the vehicle is output. If the three-phase AC charging compatibility of the vehicle does not meet the compatibility of any one of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control and guidance function test, it is determined that the three-phase AC charging compatibility of the vehicle does not meet the preset compatibility conditions, and the guiding information on the three-phase AC charging compatibility of the vehicle is output.

[0127] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0128] In this embodiment, during the process of performing various three-phase AC charging tests on a vehicle, charging parameters for each three-phase AC charging test of the vehicle are obtained, where the various three-phase AC charging tests include at least two of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control guidance function test of the vehicle. Here, the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control guidance function test are performed on the three-phase AC charging of a new energy vehicle to improve the compatibility test of the three-phase AC charging of the new energy vehicle.

[0129] Then, it is determined whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test. If so, it is determined that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and information on the three-phase AC charging compatibility of the vehicle is output, so as to effectively test the three-phase AC charging compatibility of the new energy vehicle, comprehensively evaluate the three-phase AC charging, and is beneficial to guiding the vehicle to improve the compatibility design of the three-phase AC charging.

[0130] Embodiment Two

[0131] Based on the same inventive concept, the second embodiment of the present invention further provides a three-phase AC charging compatibility test device for a new energy vehicle, as Figure 5 shown, including:

[0132] An acquisition module 201, configured to obtain the charging parameters of each three-phase AC charging test of the vehicle during the process of performing various three-phase AC charging tests on the vehicle, where the various three-phase AC charging tests include at least two of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control guidance function test of the vehicle;

[0133] A judgment module 202, configured to judge whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test; if so, determine that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and output the information on the three-phase AC charging compatibility of the vehicle.

[0134] As an alternative embodiment, the acquisition module 201 is configured to, if the multiple three-phase AC charging tests include the three-phase AC power distortion test, during the process of performing the three-phase AC power distortion test on the vehicle, acquire the input current and the input current waveform of the power battery of the vehicle, and use the input current and the input current waveform as the charging parameters of the three-phase AC power distortion, where the three-phase AC power distortion test is a test for controlling the three-phase AC power of the vehicle to output a deformed wave;

[0135] The judgment module 202 is configured to, if the input current is within the input current threshold range and there is no over-standard ripple feature in the input current waveform, determine that the three-phase AC charging compatibility of the vehicle meets the compatibility of the three-phase AC power distortion test, where the over-standard ripple feature is the feature that the peak of the input current waveform exceeds the peak threshold and / or the feature that the trough of the input current waveform exceeds the trough threshold.

[0136] As an alternative embodiment, the acquisition module 201 is configured to, if the multiple three-phase AC charging tests include the single-phase charging test, during the process of performing the single-phase charging test on the vehicle, acquire multiple single-phase charging results of the vehicle, and determine the multiple single-phase charging results as the charging parameters of the single-phase charging test;

[0137] The judgment module 202 is configured to, if all the multiple single-phase charging results meet the preset charging results, determine that the three-phase AC charging compatibility of the vehicle meets the compatibility of the single-phase charging test.

[0138] As an alternative embodiment, during the process of performing the single-phase charging test on the vehicle, acquiring the multiple single-phase charging parameters of the vehicle includes:

[0139] When starting the three-phase AC charging of the vehicle, in the case where the voltage of a certain phase of the three-phase alternating current of the vehicle is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is within the preset difference range, acquire the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the first single-phase charging result;

[0140] When starting the three-phase AC charging, in a situation where the voltage of a certain phase of the three-phase alternating current is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is not within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the second single-phase charging results;

[0141] When starting the three-phase AC charging, in a situation where the voltage of a certain phase of the three-phase alternating current is within the voltage threshold range, and the voltages of the remaining two phases of the three-phase alternating current are both not within the voltage threshold range, obtain the charging result of this phase of the alternating current, and determine the charging result of this phase of the alternating current as the third single-phase charging results.

[0142] As an optional embodiment, during the process of performing the single-phase charging test on the vehicle, obtain multiple single-phase charging parameters of the vehicle, including:

[0143] During the three-phase AC charging process of the vehicle, in a situation where the voltage of a certain phase of the three-phase alternating current of the vehicle is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the fourth single-phase charging results;

[0144] During the three-phase AC charging process, in a situation where the voltage of a certain phase of the three-phase alternating current is not within the voltage threshold range, the voltages of the remaining two phases of the three-phase alternating current are both within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current is not within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the fifth single-phase charging results;

[0145] During the three-phase AC charging process, in a situation where the voltage of a certain phase of the three-phase alternating current is within the voltage threshold range, and the voltages of the remaining two phases of the three-phase alternating current are both not within the voltage threshold range, obtain the charging result of this phase of the alternating current, and determine the charging result of this phase of the alternating current as the sixth single-phase charging results.

[0146] As an alternative embodiment, an acquisition module 201 is configured to, if the multiple three-phase AC charging tests include the connection confirmation function test, during the process of performing the connection confirmation function test on the vehicle, acquire the CC resistance value of the vehicle and determine the CC resistance value of the vehicle as the charging parameter for the connection determination function test, where the connection confirmation function test is to detect the CC resistance value of the vehicle during the process of controlling the charging gun head of the vehicle to change from a first resistance value to a second resistance value;

[0147] A judgment module 202 is configured to, if the CC resistance value of the vehicle is within a preset resistance value error range, determine that the three-phase AC charging compatibility of the vehicle meets the compatibility of the connection confirmation function test.

[0148] As an alternative embodiment, an acquisition module 201 is configured to, if the multiple three-phase AC charging tests include the control guidance function test, during the process of performing the control guidance function test on the vehicle, acquire the CP frequency test result, the CP peak test result, and the CP duty cycle test result of the vehicle, and use the CP frequency test result, the CP peak test result, and the CP duty cycle test result as the charging parameters for the control guidance function test, where the control guidance function test is the CP frequency test, the CP peak test, and the CP duty cycle test of the vehicle;

[0149] A judgment module 202 is configured to, if the CP frequency test result, the CP peak test result, and the CP duty cycle test result all meet the corresponding preset test results, determine that the three-phase AC charging compatibility of the vehicle meets the compatibility of the control guidance function test, where the corresponding preset test result is the result that the three-phase AC charging compatibility of the vehicle meets the compatibility of the corresponding test in the control guidance function test.

[0150] Since the three-phase AC charging compatibility test device of the new energy vehicle introduced in this embodiment is the device used to implement the three-phase AC charging compatibility test method of the new energy vehicle in Embodiment 1 of the present application, based on the three-phase AC charging compatibility test method of the new energy vehicle introduced in Embodiment 1 of the present application, those skilled in the art can understand the specific implementation manners and various variations of the three-phase AC charging compatibility test device of the new energy vehicle in this embodiment. Therefore, the implementation of how the three-phase AC charging compatibility test device of the new energy vehicle implements the method in Embodiment 1 of the present application will not be described in detail here. As long as those skilled in the art implement the device used to implement the three-phase AC charging compatibility test method of the new energy vehicle in Embodiment 1 of the present application, it falls within the scope protected by the present application.

[0151] Embodiment 3

[0152] Based on the same inventive concept, the third embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of any one of the above-mentioned three-phase AC charging compatibility test methods for new energy vehicles are implemented.

[0153] Embodiment Four

[0154] Based on the same inventive concept, the fourth embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps of any one of the three-phase AC charging compatibility test methods for new energy vehicles described in the first embodiment above are implemented.

[0155] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code.

[0156] The present invention is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0157] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implements the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0158] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus, causing a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one flow Figure 1 one or more flows and / or boxes Figure 1 or steps for implementing the functions specified in a box or boxes.

[0159] Although the preferred embodiments of the present invention have been described, additional changes and modifications can be made by those skilled in the art once they learn of the basic inventive concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present invention.

[0160] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A three-phase AC charging compatibility test method for a new energy vehicle, characterized in that, it includes: During the process of performing various three-phase AC charging tests on the vehicle, obtain the charging parameters of each three-phase AC charging test of the vehicle, where the various three-phase AC charging tests include at least two of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control guidance function test of the vehicle; Judge whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test; If so, determine that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and output the information of the three-phase AC charging compatibility of the vehicle; If the various three-phase AC charging tests include the single-phase charging test, then the method further includes: During the process of performing the single-phase charging test on the vehicle, obtain multiple single-phase charging results of the vehicle, and determine the multiple single-phase charging results as the charging parameters of the single-phase charging test; If all the multiple single-phase charging results meet the preset charging results, determine that the three-phase AC charging compatibility of the vehicle meets the compatibility of the single-phase charging test; During the process of performing the single-phase charging test on the vehicle, obtaining multiple single-phase charging parameters of the vehicle includes: When turning on the three-phase AC charging of the vehicle, control the voltage of a certain phase of the three-phase alternating current of the vehicle not to be within the voltage threshold range, control the voltages of the remaining two phases of the three-phase alternating current to be within the voltage threshold range, and when the voltage difference between the remaining two phases of the alternating current is within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the first single-phase charging result; When turning on the three-phase AC charging, control the voltage of a certain phase of the three-phase alternating current of the vehicle not to be within the voltage threshold range, control the voltages of the remaining two phases of the three-phase alternating current to be within the voltage threshold range, and when the voltage difference between the remaining two phases of the alternating current is not within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the second single-phase charging result; When turning on the three-phase AC charging, control the voltage of a certain phase of the three-phase alternating current of the vehicle to be within the voltage threshold range, and control the voltages of the remaining two phases of the three-phase alternating current not to be within the voltage threshold range, and obtain the charging result of this phase of the alternating current, and determine the charging result of this phase of the alternating current as the third single-phase charging result.

2. The method according to claim 1, characterized in that, If the various three-phase AC charging tests include the three-phase AC power distortion test, then the method further includes: During the process of performing the three-phase AC power distortion test on the vehicle, obtain the input current and input current waveform of the vehicle's power battery, and use the input current and the input current waveform as the charging parameters for the three-phase AC power distortion, where the three-phase AC power distortion test is a test for controlling the three-phase AC power of the vehicle to output a deformed wave; If the input current is within the input current threshold range and there is no feature of excessive ripple in the input current waveform, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the three-phase AC power distortion test, where the feature of excessive ripple is the feature that the peak in the input current waveform exceeds the peak threshold and / or the feature that the trough in the input current waveform exceeds the trough threshold.

3. The method according to claim 1, characterized in that, During the process of performing the single-phase charging test on the vehicle, obtain multiple single-phase charging parameters of the vehicle, including: During the three-phase AC charging process of the vehicle, when controlling the voltage of a certain phase of the three-phase alternating current of the vehicle not to be within the voltage threshold range, controlling the voltages of the remaining two phases of the three-phase alternating current to be within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current being within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the fourth single-phase charging result; During the three-phase AC charging process, when controlling the voltage of a certain phase of the three-phase alternating current of the vehicle not to be within the voltage threshold range, controlling the voltages of the remaining two phases of the three-phase alternating current to be within the voltage threshold range, and the voltage difference between the remaining two phases of the alternating current not being within the preset difference range, obtain the charging results of the remaining two phases of the alternating current, and determine the charging results of the remaining two phases of the alternating current as the fifth single-phase charging result; During the three-phase AC charging process, when controlling the voltage of a certain phase of the three-phase alternating current of the vehicle to be within the voltage threshold range and controlling the voltages of the remaining two phases of the three-phase alternating current not to be within the voltage threshold range, obtain the charging result of this phase of the alternating current, and determine the charging result of this phase of the alternating current as the sixth single-phase charging result.

4. The method according to claim 1, characterized in that, If the multiple three-phase AC charging tests include the connection confirmation function test, the method further includes: During the process of performing the connection confirmation function test on the vehicle, obtain the CC resistance value of the vehicle, and determine the CC resistance value of the vehicle as the charging parameter for the connection confirmation function test, where the connection confirmation function test is to detect the CC resistance value of the vehicle during the process of controlling the charging gun head of the vehicle to change from the first resistance value to the second resistance value; If the CC resistance value of the vehicle is within the preset resistance error range, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the connection confirmation function test.

5. The method according to claim 1, characterized in that, If the multiple three-phase AC charging tests include the control and guidance function test, the method further includes: During the process of performing the control and guidance function test on the vehicle, obtaining the CP frequency test result, CP peak test result, and CP duty cycle test result of the vehicle, and using the CP frequency test result, CP peak test result, and CP duty cycle test result as the charging parameters for the control and guidance function test, where the control and guidance function test is the CP frequency test, CP peak test, and CP duty cycle test of the vehicle; If the CP frequency test result, CP peak test result, and CP duty cycle test result all meet the corresponding preset test results, it is determined that the three-phase AC charging compatibility of the vehicle meets the compatibility of the control and guidance function test, where the corresponding preset test result is the result that the three-phase AC charging compatibility of the vehicle meets the compatibility of the corresponding test in the control and guidance function test.

6. A three-phase AC charging compatibility test device for a new energy vehicle, the device is used to implement the method steps described in any one of claims 1-5, Characterized in that, It includes: An acquisition module, configured to obtain the charging parameters of each three-phase AC charging test of the vehicle during the process of performing multiple three-phase AC charging tests on the vehicle, where the multiple three-phase AC charging tests include at least two of the three-phase AC power distortion test, single-phase charging test, connection confirmation function test, and control and guidance function test of the vehicle; A judgment module, configured to judge whether the charging parameters of each three-phase AC charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase AC charging test; if so, determine that the three-phase AC charging compatibility of the vehicle meets the preset compatibility conditions, and output the information of the three-phase AC charging compatibility of the vehicle.

7. A computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, Characterized in that, When the processor executes the program, it implements the method steps described in any one of claims 1-5.

8. A computer-readable storage medium, on which a computer program is stored, Characterized in that, When the program is executed by the processor, it implements the method steps described in any one of claims 1-5.

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