CN115469162A

CN115469162A - Three-phase alternating current charging compatibility testing method and device for new energy automobile

Info

Publication number: CN115469162A
Application number: CN202210914477.5A
Authority: CN
Inventors: 郭昌伦
Original assignee: Lantu Automobile Technology Co Ltd
Current assignee: Lantu Automobile Technology Co Ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-12-13

Abstract

The invention relates to the technical field of electric vehicle charging, in particular to a three-phase alternating current charging compatibility testing method for a new energy vehicle, which comprises the following steps: the method comprises the steps that in the process of carrying out multiple three-phase alternating current charging tests on a vehicle, charging parameters of each three-phase alternating current charging test of the vehicle are obtained, wherein the multiple three-phase alternating current charging tests comprise at least two of a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test of the vehicle; judging whether the charging parameters of each three-phase alternating current charging test meet preset parameter conditions corresponding to the charging parameters of each three-phase alternating current charging test; if yes, determining that the three-phase alternating current charging compatibility of the vehicle meets a preset compatibility condition, and outputting information of the three-phase alternating current charging compatibility of the vehicle. The method is used for carrying out compatibility test on the three-phase alternating current charging of the new energy automobile, effectively checking the three-phase alternating current charging compatibility and completely evaluating the three-phase alternating current charging.

Description

Three-phase alternating current charging compatibility testing method and device for new energy automobile

Technical Field

The invention relates to the technical field of electric vehicle charging, in particular to a method and a device for testing three-phase alternating current charging compatibility of a new energy vehicle.

Background

At present, three-phase alternating current charging is suitable for the situation of alternating current charging of a new energy automobile with the charging demand power of 10kW and above. Compared with single-phase alternating current charging, three-phase alternating current charging generally has the following characteristics:

1) The charging power is higher, the current load is larger, and the power supply interference is easier to be caused;

2) Identification and switching of single-phase and three-phase alternating current charging can be involved;

3) The power grid power supply can be taken from an industrial power grid, so that the power grid environment is worse;

4) In the charging process, whether three-phase alternating current input is balanced needs to be detected, and a protection strategy needs to be formulated for the three-phase alternating current imbalance.

Based on the characteristics of the three-phase alternating current charging, the existing test method for the three-phase alternating current charging of the new energy automobile tests the single performance of the three-phase alternating current charging, for example, the problem that the compatibility test of the test method for the three-phase alternating current charging is incomplete due to the test of the single-phase alternating current charging in the three-phase alternating current charging is solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for testing three-phase alternating current charging of a new energy automobile, solves the technical problem that the compatibility test for the three-phase alternating current charging of the new energy automobile in the prior art is incomplete, achieves the compatibility test for the three-phase alternating current charging of the new energy automobile, effectively checks the three-phase alternating current charging compatibility of the new energy automobile, completely evaluates the three-phase alternating current charging, and is beneficial to guiding vehicles to improve the technical effects of compatibility design for the three-phase alternating current charging and the like.

In a first aspect, an embodiment of the present invention provides a method for testing three-phase ac charging compatibility of a new energy vehicle, including:

acquiring charging parameters of each three-phase alternating current charging test of a vehicle in the process of carrying out a plurality of three-phase alternating current charging tests on the vehicle, wherein the plurality of three-phase alternating current charging tests comprise at least two of a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test of the vehicle;

judging whether the charging parameters of each three-phase alternating current charging test meet preset parameter conditions corresponding to the charging parameters of each three-phase alternating current charging test;

if yes, determining that the three-phase alternating current charging compatibility of the vehicle meets a preset compatibility condition, and outputting information of the three-phase alternating current charging compatibility of the vehicle.

Preferably, if the plurality of three-phase ac charging tests includes the three-phase ac power supply distortion test, the method further includes:

in the process of carrying out the three-phase alternating current power supply distortion test on the vehicle, acquiring an input current and an input current waveform of a power battery of the vehicle, and taking the input current and the input current waveform as charging parameters of the three-phase alternating current power supply distortion, wherein the three-phase alternating current power supply distortion test is a test for controlling the three-phase alternating current power supply of the vehicle to output a special-shaped wave;

and if the input current is within the range of an input current threshold value and the input current waveform does not have an overproof ripple characteristic, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the three-phase alternating current power supply distortion test, wherein the overproof ripple characteristic is a characteristic that a wave crest in the input current waveform exceeds a wave crest threshold value and/or a characteristic that a wave trough in the input current waveform exceeds a wave trough threshold value.

Preferably, if the plurality of three-phase ac charging tests includes the single-phase charging test, the method further comprises:

during the single-phase charging test of the vehicle, obtaining a plurality of single-phase charging results of the vehicle, and determining the single-phase charging results as charging parameters of the single-phase charging test;

and if the plurality of single-phase charging results all accord with preset charging results, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the single-phase charging test.

Preferably, the acquiring a plurality of single-phase charging parameters of the vehicle during the single-phase charging test on the vehicle includes:

when the three-phase alternating current charging of the vehicle is started, controlling the voltage of a certain phase of alternating current in the three-phase alternating current of the vehicle not to be within a voltage threshold range, controlling the voltages of the rest two-phase alternating currents in the three-phase alternating current to be within the voltage threshold range, and obtaining the charging result of the rest two-phase alternating currents under the condition that the voltage difference value of the rest two-phase alternating currents is within a preset difference value range, and determining the charging result of the rest two-phase alternating currents as a first single-phase charging result;

when the three-phase alternating current charging is started, controlling the voltage of a certain phase of alternating current in the three-phase alternating current not to be within the voltage threshold range, controlling the voltages of the other two-phase alternating currents in the three-phase alternating current to be within the voltage threshold range, and obtaining the charging result of the other two-phase alternating current under the condition that the voltage difference value of the other two-phase alternating currents is not within the preset difference value range, and determining the charging result of the other two-phase alternating current as a second single-phase charging result;

when the three-phase alternating current charging is started, under the condition that the voltage of a certain phase of alternating current in the three-phase alternating current is controlled to be in the voltage threshold range and the voltages of the other two phases of alternating currents in the three-phase alternating current are not in the voltage threshold range, the charging result of the alternating current is obtained, and the charging result of the phase of alternating current is determined as a third single-phase charging result.

in the three-phase alternating current charging process of the vehicle, controlling the voltage of a certain phase of alternating current in the three-phase alternating current of the vehicle not to be within a voltage threshold range, controlling the voltages of the other two-phase alternating currents in the three-phase alternating current to be within the voltage threshold range, and obtaining the charging result of the other two-phase alternating currents under the condition that the voltage difference value of the other two-phase alternating currents is within a preset difference value range, and determining the charging result of the other two-phase alternating currents as a fourth single-phase charging result;

in the three-phase alternating current charging process, controlling the voltage of a certain phase of alternating current in the three-phase alternating current not to be within the voltage threshold range, controlling the voltages of the other two-phase alternating currents in the three-phase alternating current to be within the voltage threshold range, and obtaining the charging result of the other two-phase alternating currents under the condition that the voltage difference value of the other two-phase alternating currents is not within the preset difference value range, and determining the charging result of the other two-phase alternating current as a fifth single-phase charging result;

in the three-phase alternating current charging process, under the condition that the voltage of a certain phase of alternating current in the three-phase alternating current is controlled to be in the voltage threshold range and the voltages of the other two phases of alternating currents in the three-phase alternating current are not controlled to be in the voltage threshold range, the charging result of the phase of alternating current is obtained, and the charging result of the phase of alternating current is determined as a sixth single-phase charging result.

Preferably, if the plurality of three-phase ac charging tests includes the connection confirmation function test, the method further includes:

in the process of performing the connection confirmation function test on the vehicle, acquiring a CC resistance value of the vehicle, and determining the CC resistance value of the vehicle as a charging parameter of the connection confirmation function test, wherein the connection confirmation function test is to detect the CC resistance value of the vehicle in the process of controlling a charging gun head of the vehicle to change from a first resistance value to a second resistance value;

and if the CC resistance value of the vehicle is within a preset resistance value error range, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the connection confirmation function test.

Preferably, if the plurality of three-phase ac charging tests includes the control pilot function test, the method further includes:

in the process of performing the control guidance function test on the vehicle, acquiring a CP frequency test result, a CP peak test result and a CP duty ratio test result of the vehicle, and taking the CP frequency test result, the CP peak test result and the CP duty ratio test result as charging parameters of the control guidance function test, wherein the control guidance function test is the CP frequency test, the CP peak test and the CP duty ratio test of the vehicle;

and if the CP frequency test result, the CP peak value test result and the CP duty ratio test result all accord with corresponding preset test results, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the control guidance function test, wherein the corresponding preset test result is a result that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the corresponding test in the control guidance function test.

Based on the same inventive concept, in a second aspect, the invention further provides a device for testing the three-phase ac charging compatibility of a new energy automobile, which comprises:

the system comprises an acquisition module, a control module and a display module, wherein the acquisition module is used for acquiring charging parameters of each three-phase alternating current charging test of a vehicle in the process of carrying out multiple three-phase alternating current charging tests on the vehicle, and the multiple three-phase alternating current charging tests comprise at least two of a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test of the vehicle;

the judging module is used for judging whether the charging parameters of each three-phase alternating current charging test all accord with preset parameter conditions corresponding to the charging parameters of each three-phase alternating current charging test; if yes, determining that the three-phase alternating current charging compatibility of the vehicle meets a preset compatibility condition, and outputting information of the three-phase alternating current charging compatibility of the vehicle.

Based on the same inventive concept, in a third aspect, the invention provides a computer device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, the steps of the method for testing the three-phase ac charging compatibility of the new energy vehicle are realized.

Based on the same inventive concept, in a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements the steps of the method for testing the compatibility of three-phase ac charging of a new energy vehicle.

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

in the embodiment of the invention, the charging parameters of each three-phase alternating current charging test of the vehicle are obtained in the process of carrying out a plurality of three-phase alternating current charging tests on the vehicle, wherein the plurality of three-phase alternating current charging tests comprise at least two of a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test of the vehicle. The three-phase alternating current charging of the new energy automobile is subjected to a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test, so that the compatibility test of the three-phase alternating current charging of the new energy automobile is completed.

And then judging whether the charging parameters of each three-phase alternating current charging test all accord with preset parameter conditions corresponding to the charging parameters of each three-phase alternating current charging test. If yes, determining that the three-phase alternating current charging compatibility of the vehicle meets the preset compatibility condition, and outputting information of the three-phase alternating current charging compatibility of the vehicle so as to effectively check the three-phase alternating current charging compatibility of the new energy vehicle, completely evaluate the three-phase alternating current charging, and facilitate guiding the vehicle to improve the design of the three-phase alternating current charging compatibility.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic flowchart illustrating steps of a method for testing three-phase ac charging compatibility of a new energy vehicle according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram illustrating a three-phase ac charging compatibility test system of a new energy vehicle according to an embodiment of the present invention;

FIG. 3 is a waveform diagram of a quarter-cycle-removed profile wave output by the tunable three-phase AC power supply in an embodiment of the present invention;

fig. 4 shows a waveform diagram of a shaped CP wave output from a CP signal transmitter in an embodiment of the present invention;

fig. 5 shows a module schematic diagram of a three-phase ac charging compatibility testing apparatus of a new energy vehicle in an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Example one

The first embodiment of the present invention provides a method for testing three-phase ac charging compatibility of a new energy vehicle, as shown in fig. 1, including:

s101, in the process of carrying out various three-phase alternating current charging tests on a vehicle, obtaining charging parameters of each three-phase alternating current charging test of the vehicle, wherein the various three-phase alternating current charging tests comprise at least two of a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test of the vehicle;

s102, judging whether the charging parameters of each three-phase alternating current charging test all accord with preset parameter conditions corresponding to the charging parameters of each three-phase alternating current charging test;

and S103, if yes, determining that the three-phase alternating current charging compatibility of the vehicle meets a preset compatibility condition, and outputting information of the three-phase alternating current charging compatibility of the vehicle.

The three-phase alternating current charging compatibility testing method of the new energy automobile is applied to a three-phase alternating current charging compatibility testing system of the new energy automobile. As shown in fig. 2, the system for testing the three-phase alternating current charging compatibility of the new energy automobile comprises an adjustable three-phase alternating current power supply, a CP signal emitter, an adjustable CC resistance value charging gun head, an alternating current charging seat, a vehicle-mounted charger, a power battery, an oscilloscope 1, an oscilloscope 2 and a CAN message acquisition device. The alternating current charging seat, the vehicle-mounted charger and the power battery are original components on the vehicle.

And the three-phase interfaces L1/L2/L3, the N interface and the PE interface of the adjustable three-phase alternating current power supply are respectively connected with the three-phase interfaces L1/L2/L3, the N interface and the PE interface of the adjustable CC resistance value charging gun head one by one. And a CP interface of the CP signal transmitter is connected with a CP interface of the charging gun head with the adjustable CC resistance value. The adjustable three-phase alternating current power supply is used for adjusting the waveform of each phase of alternating current and can turn off any phase of power supply. The CP signal transmitter is used for adjusting the waveform, CP signal frequency, CP peak voltage and CP duty cycle of the CP signal. The adjustable CC resistance charging gun head is used for adjusting the CC resistance of the charging gun head and is also used for being connected with an alternating current charging seat to charge a vehicle.

It should be noted that the CP signal is a Control Pilot Function signal, and the CP is generally called a Control Pilot Function in english, and the signal is mainly used for monitoring an interaction Function between an electric vehicle and an electric vehicle power supply device (such as a charging pile). The resistance value of the CC, which is called Connection confirmation Function resistance value in all of CC english, reflects the Connection state between the vehicle plug and the vehicle and/or the Connection state between the power supply plug and the charging device. For example, the CC resistance of the adjustable CC resistance charging tip reflects the connection state of the charging tip. And the CC resistance value between the alternating-current charging seat and the vehicle-mounted charger reflects the connection state between the alternating-current charging seat and the vehicle-mounted charger.

The three-phase interfaces L1/L2/L3, the N interface, the PE interface, the CP interface and the CC interface of the alternating-current charging stand are respectively connected with the three-phase interfaces L1/L2/L3, the N interface, the PE interface, the CP interface and the CC interface of the vehicle-mounted charger one by one. The DC + interface (direct current positive electrode interface), the DC-interface (direct current negative electrode interface), the CANH interface and the CANL interface of the vehicle-mounted charger are respectively connected with the DC + interface, the DC-interface, the CANH interface and the CANL interface of the power battery one by one.

Both the oscilloscope 1 and the oscilloscope 2 are oscilloscopes having not less than 3 sampling channels. The oscilloscope 1 is used for collecting each phase alternating current waveform in three-phase alternating current between the adjustable three-phase alternating current power supply and the adjustable CC resistance charging gun head. Two sampling channels of the oscilloscope 2 are respectively connected with two-phase electric wires between the vehicle-mounted charger and the power battery, and the oscilloscope 2 is used for acquiring each phase of direct current waveform in two-phase direct currents between the vehicle-mounted charger and the power battery.

Two channels of the CAN message acquisition device are respectively connected with a CANH line and a CANL line between the vehicle-mounted charger and the power battery and are used for acquiring CAN signals connected with the CANH line and the CANL line.

The following describes in detail specific implementation steps of the method for testing three-phase ac charging compatibility of a new energy vehicle according to this embodiment with reference to fig. 1 and fig. 2:

first, step S101 is executed to obtain charging parameters of each three-phase ac charging test of the vehicle during a process of performing a plurality of three-phase ac charging tests on the vehicle, where the plurality of three-phase ac charging tests include at least two of a three-phase ac power source distortion test, a single-phase charging test, a connection confirmation function test, and a control guidance function test of the vehicle.

Specifically, in the case that the plurality of three-phase alternating current charging tests include a three-phase alternating current power supply distortion test, in the process of performing the three-phase alternating current power supply distortion test on the vehicle, the input current and the input current waveform of the power battery of the vehicle are obtained and are used as charging parameters of the three-phase alternating current power supply distortion, wherein the three-phase alternating current power supply distortion test is a test for controlling the three-phase alternating current power supply of the vehicle to output special-shaped waves.

In the specific implementation process, the three-phase alternating-current power supply distortion test is to test whether the power battery can be normally charged and whether the input current waveform of the power battery exceeds the standard under the condition of controlling the adjustable three-phase alternating-current power supply to output various special-shaped waves. The oscilloscope 1 is used for observing the special-shaped wave output by the adjustable three-phase alternating current power supply, namely the voltage waveform output by the adjustable three-phase alternating current power supply. The input current waveform of the power battery is observed through the oscilloscope 2. The irregular wave output by the adjustable three-phase alternating current power supply comprises a single-phase irregular wave which is not limited to a quarter-cycle wave, a half-cycle wave or a sudden pit loading type irregular wave. As shown in fig. 3, the adjustable three-phase ac power supply is controlled to output a quarter-cycle irregular wave, that is, a quarter-cycle wave is dropped on each phase of ac power in the three-phase ac power supply. In fig. 3, the peak threshold value of the special-shaped wave with a quarter cycle wave removed from the output of the adjustable three-phase ac power supply is controlled to be +300mA, and the trough threshold value is controlled to be-300 mA, wherein the sign indicates the direction of the wave.

If the input current is within the input current threshold range and the ripple exceeding characteristic does not exist in the input current waveform, the power battery is normally charged, and the service life and the safety of the power battery are not damaged in the charging process of the power battery, the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the three-phase alternating current power supply distortion test. The ripple superstandard feature is a feature that a peak in an input current waveform exceeds a peak threshold value and/or a valley in the input current waveform exceeds a valley threshold value. The compatibility of the three-phase alternating current power supply distortion test is the performance that the power battery is normally charged and is not damaged under the condition that the three-phase alternating current power supply outputs special-shaped waves. The input current threshold range, the peak threshold and the trough threshold are set according to actual requirements.

If the input current is not in the input current threshold range or the ripple overproof characteristic exists in the input current waveform, the abnormal charging of the power battery is indicated, or certain damage is caused to the service life and the safety of the power battery in the charging process of the power battery, and the three-phase alternating current charging compatibility of the vehicle is determined to be not in accordance with the compatibility of the three-phase alternating current power supply distortion test.

Taking the example shown in fig. 3 that the irregular wave of a quarter cycle wave is dropped from the output of the adjustable three-phase ac power supply, that is, the irregular wave is used to perform the distortion test of the three-phase ac power supply when the quarter cycle wave is dropped from each phase of ac power in the three-phase ac power supply. In the process of carrying out a three-phase alternating current power supply distortion test on a vehicle, the input current and the input current waveform of a power battery of the vehicle are obtained. The input current waveform is displayed by the oscilloscope 2, the wave crest of the input current waveform displayed by the oscilloscope 2 is plus + 1.5A, the wave trough is minus 1.5A, and the sign indicates the direction of the wave.

If the input current is within the input current threshold range, the power battery is normally charged, and the ripple overproof characteristic does not exist in the input current waveform, namely the wave crest characteristic exceeding 1.5A and/or the wave trough characteristic exceeding-1.5A do not exist in the input current waveform, and the service life and the safety of the power battery are not damaged in the charging process of the power battery, the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of a three-phase alternating current power supply distortion test.

If the input current is not in the input current threshold range, the power battery is abnormally charged, or ripple overproof characteristics exist in the input current waveform, namely peak characteristics exceeding 1.5A and/or valley characteristics exceeding-1.5A exist in the input current waveform, and certain damage is caused to the service life and safety of the power battery in the process of charging the power battery, the three-phase alternating current charging compatibility of the vehicle is determined to be not in accordance with the compatibility of the three-phase alternating current power supply distortion test.

In the embodiment, the charging parameters of the three-phase alternating-current power supply distortion test, namely the input current and the input current waveform of the power battery of the vehicle, are obtained by performing the three-phase alternating-current power supply distortion test on the vehicle. And then, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of a three-phase alternating current power supply distortion test by judging that the input current is positioned at the input current threshold and the input current waveform does not have the ripple standard exceeding characteristic, and effectively checking the three-phase alternating current charging compatibility of the new energy vehicle under the three-phase alternating current power supply distortion test.

In the case that the plurality of three-phase alternating-current charging tests include a single-phase charging test, a plurality of single-phase charging results of the vehicle are obtained in the process of performing the single-phase charging test on the vehicle, and the plurality of single-phase charging results are determined as charging parameters of the single-phase charging test. The single-phase charging test is to test a single-phase alternating current charging function in a three-phase alternating current of a vehicle.

And if the plurality of single-phase charging results all accord with the preset charging result, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the single-phase charging test. The preset charging result is a result of charging the power battery through a certain single-phase alternating current in three-phase alternating currents of the vehicle. The compatibility of the single-phase charging test is the performance of charging the power battery through any one phase of alternating current in three-phase alternating current of the vehicle.

And if one single-phase charging result in the plurality of single-phase charging results does not accord with the preset charging result, determining that the three-phase alternating current charging compatibility of the vehicle does not meet the compatibility of the single-phase charging test.

The single-phase charging test comprises the following specific processes:

in a first scenario, when three-phase alternating current charging of a vehicle is started, the voltage of a certain phase of alternating current in the three-phase alternating current of the vehicle is controlled not to be within a voltage threshold range, the voltages of the other two-phase alternating currents in the three-phase alternating current are controlled to be within the voltage threshold range, and under the condition that the voltage difference value of the other two-phase alternating currents is within a preset difference value range, the charging result of the other two-phase alternating currents is obtained, and the charging result of the other two-phase alternating currents is determined as a first single-phase charging result. The voltage threshold range and the preset difference range are set according to actual requirements.

For example, when the three-phase ac charging of the vehicle is turned on, the voltage of L1 of the three-phase ac power L1/L2/L3 that controls the vehicle is not within the voltage threshold range, the voltage of control L2 and the voltage of L3 are both 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, there is one-phase ac power in L2 and L3 to charge the power battery, or there is no one-phase ac power in L2 and L3 to charge the power battery. The first single-phase charging result includes the charging results of L2 and L3 in this control situation.

Assuming 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 matches the preset charging result.

It should be further noted that, in the scenario one, since 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-phase alternating currents of the three-phase alternating current are all within the voltage threshold range, and the voltage difference value of the remaining two-phase alternating current is within the preset difference range. Then, there are three control scenarios in scene one.

If the control situation is a situation that the voltage of L1 in the three-phase alternating current L1/L2/L3 of the control vehicle is not in the voltage threshold range, the voltage of L2 and the voltage of L3 are both in the voltage threshold range, and the voltage difference between L2 and L3 is in the preset difference range. And the second control situation is a situation that the voltage of L2 in the three-phase alternating current L1/L2/L3 of the vehicle is controlled not to be within the voltage threshold range, the voltage of L1 and the voltage of L3 are both controlled to be within the voltage threshold range, and the voltage difference between L1 and L3 is within the preset difference range. The third control case is a case where the voltage of L3 in the three-phase alternating current L1/L2/L3 of the control vehicle is not in the voltage threshold range, the voltage of L1 and the voltage of L2 are both in 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 situations in the above scenario one.

In a second scenario, when the three-phase alternating current charging is started, the voltage of a certain phase of alternating current in the three-phase alternating current is controlled not to be within the voltage threshold range, the voltages of the other two phases of alternating currents in the three-phase alternating current are controlled to be within the voltage threshold range, and under the condition that the voltage difference value of the other two phases of alternating currents is not within the preset difference value range, the charging result of the other two phases of alternating currents is obtained, and the charging result of the other two phases of alternating currents is determined as a second single-phase charging result.

For example, when the three-phase ac charging of the vehicle is turned on, the voltage of L1 of the three-phase ac power L1/L2/L3 that controls the vehicle is not within the voltage threshold range, the voltage of control L2 and the voltage of 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 situation, L1 cannot charge the power battery, there is one-phase ac power in L2 and L3 to charge the power battery, or there is no one-phase ac power in L2 and L3 to charge the power battery. The second single-phase charging result includes the charging results of L2 and L3 in this control situation.

Assuming 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 matches the preset charging result.

It should be noted that, in the second scenario, since 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-phase alternating currents of the three-phase alternating current are all within the voltage threshold range, and the voltage difference value of the remaining two-phase alternating current is not within the preset difference range. Then, there are three control scenarios in scene two.

If the control situation is the situation that the voltage of L1 in the three-phase alternating current L1/L2/L3 of the control vehicle is not in the voltage threshold range, the voltage of L2 and the voltage of L3 are both in the voltage threshold range, and the voltage difference between L2 and L3 is not in the preset difference range. And the second control situation is a situation that the voltage of L2 in the three-phase alternating current L1/L2/L3 of the vehicle is controlled not to be in the voltage threshold range, the voltage of L1 and the voltage of L3 are controlled to be in the voltage threshold range, and the voltage difference between L1 and L3 is not in the preset difference range. The third control case is a case where the voltage of L3 of the three-phase alternating current L1/L2/L3 of the control vehicle is not in the voltage threshold range, the voltage of L1 and the voltage of L2 are both in the voltage threshold range, and the voltage difference between L1 and L2 is not within the preset difference range. Thus, the second single-phase charging results include the charging results of the three control situations in scenario two above.

And in a third scenario, when the three-phase alternating current charging is started, under the condition that the voltage of a certain phase of alternating current in the three-phase alternating current is controlled to be within the voltage threshold range and the voltages of the rest two phases of alternating currents in the three-phase alternating current are not controlled to be within the voltage threshold range, the charging result of the alternating current is obtained, and the charging result of the phase of alternating current is determined as a third single-phase charging result.

For example, when the three-phase alternating current charging of the vehicle is turned on, the voltage of L1 of the three-phase alternating current L1/L2/L3 that controls the vehicle is within the voltage threshold range, and neither the voltage of L2 nor the voltage of L3 is within the voltage threshold range. In this control situation, L2 and L3 are such that the power battery cannot be charged, and only the power battery can be charged via L1. The third single-phase charging result includes the charging result of L1 in this control situation.

Assuming that L1 can charge the power battery under this control condition, the charging result of L1 matches the preset charging result.

It should be noted that, in the third scenario, the voltage of a certain phase of alternating current in the three-phase alternating current is controlled to be within the voltage threshold range, and the voltages of the remaining two phases of alternating currents in the three-phase alternating current are not controlled to be within the voltage threshold range. Then, there are three control scenarios in scene three.

If the control situation is a situation that the voltage of L1 in the three-phase alternating current L1/L2/L3 of the control vehicle is in the voltage threshold range, the voltage of L2 and the voltage of L3 are not in the voltage threshold range. And the second control situation is that the voltage of L2 in the three-phase alternating current L1/L2/L3 of the vehicle is controlled to be in the voltage threshold range, and the voltage of L1 and the voltage of L3 are not controlled to be in the voltage threshold range. The third control case is a case where the voltage of L3 of the three-phase alternating current L1/L2/L3 of the vehicle is controlled to be within the voltage threshold range, and neither the voltage of L1 nor the voltage of L2 is controlled to be within the voltage threshold range. Thus, the third single-phase charging result includes the charging results of the three control situations in scenario three above.

And a fourth scenario, in the three-phase alternating current charging process, controlling the voltage of a certain phase of alternating current in the three-phase alternating current not to be within the voltage threshold range, controlling the voltages of the rest two-phase alternating currents in the three-phase alternating current to be within the voltage threshold range, and obtaining the charging result of the rest two-phase alternating currents under the condition that the voltage difference value of the rest two-phase alternating currents is within the preset difference value range, and determining the charging result of the rest two-phase alternating currents as a fourth single-phase charging result.

For example, during three-phase ac charging of the vehicle, the voltage of L1 of the three-phase ac power L1/L2/L3 controlling the vehicle is not within the voltage threshold range, the voltage of L2 and the voltage of L3 are both 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, there is one-phase ac power in L2 and L3 to charge the power battery, or there is no one-phase ac power in L2 and L3 to charge the power battery. The fourth single-phase charging result includes the charging results of L2 and L3 in this control situation.

It should be further noted that, in the fourth scenario, since the voltage of a certain phase of alternating current in the three-phase alternating current of the control vehicle is not within the voltage threshold range, the voltages of the remaining two-phase alternating currents in the three-phase alternating current are all within the voltage threshold range, and the voltage difference value of the remaining two-phase alternating currents is within the preset difference range. Then, there are three control scenarios in scene four. Three control situations in scene four can be known according to the control situation in scene one, and are not described herein again. And, the fourth single-phase charging result includes the charging results of the three control situations in scenario four.

And a fifth scenario, in the three-phase alternating current charging process, controlling the voltage of a certain phase of alternating current in the three-phase alternating current not to be within the voltage threshold range, controlling the voltages of the other two-phase alternating currents in the three-phase alternating current to be within the voltage threshold range, and obtaining the charging result of the other two-phase alternating currents under the condition that the voltage difference value of the other two-phase alternating currents is not within the preset difference value range, and determining the charging result of the other two-phase alternating currents as a fifth single-phase charging result.

For example, during three-phase ac charging of the vehicle, the voltage of L1 of the three-phase ac power L1/L2/L3 controlling the vehicle is not within the voltage threshold range, the voltage of L2 and the voltage of 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 situation, L1 cannot charge the power battery, there is one-phase ac power in L2 and L3 to charge the power battery, or there is no one-phase ac power in L2 and L3 to charge the power battery. The fifth single-phase charging result includes the charging results of L2 and L3 in this control situation.

It should be further noted that in the fifth scenario, since 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-phase alternating currents of the three-phase alternating current are all within the voltage threshold range, and the voltage difference value of the remaining two-phase alternating currents is not within the preset difference range. Then, there are three control situations in scene five. Three control situations in scene five can be known according to the control situation in scene two, and are not described herein again. And, the fifth single-phase charging result includes the charging results of the three control situations in scenario five.

And a sixth scenario, in the three-phase alternating-current charging process, under the condition that the voltage of a certain phase of alternating current in the three-phase alternating current is controlled to be in the voltage threshold range, and the voltages of the other two phases of alternating currents in the three-phase alternating current are not controlled to be in the voltage threshold range, obtaining the charging result of the phase of alternating current, and determining the charging result of the phase of alternating current as a sixth single-phase charging result.

For example, during three-phase ac charging of the vehicle, the voltage of L1 of the three-phase ac power L1/L2/L3 that controls the vehicle is within the voltage threshold range, and neither the voltage of L2 nor the voltage of L3 is within the voltage threshold range. In this control situation, L2 and L3 are such that the power battery cannot be charged, and only the power battery can be charged via L1. The sixth single-phase charging result includes the charging result of L1 in this control situation.

Assuming that L1 can charge the power battery under this control situation, the charging result of L1 matches the preset charging result.

It should be noted that, in the sixth scenario, the voltage of a certain phase of the three-phase alternating current is controlled to be within the voltage threshold range, and the voltages of the remaining two-phase alternating currents in the three-phase alternating current are not controlled to be within the voltage threshold range. Then, there are three control scenarios in scene six. Three control situations in scene six can be known according to the control situation in scene three, and are not described herein again. And, the sixth single-phase charging result includes the charging results of the three control situations in scene six.

After 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 are obtained, whether each single-phase charging result meets a preset charging result or not is judged. And if each single-phase charging result accords with the preset charging result, the charging result of each control situation in each single-phase charging result can realize the charging of the single-phase alternating current to the power battery, and then the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the single-phase charging test. And if one single-phase charging result in the single-phase charging results does not accord with a preset charging result, the single-phase alternating current charging result cannot realize the single-phase alternating current charging of the power battery, and the three-phase alternating current charging compatibility of the vehicle is determined not to meet the compatibility of the single-phase charging test.

In the embodiment, the charging parameters of the single-phase charging test, namely a plurality of single-phase charging results, are obtained by performing the single-phase charging test on the vehicle. And then, each single-phase charging result is judged to be in accordance with the preset charging result, so that the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the single-phase charging test, the three-phase alternating current charging compatibility of the new energy automobile under the single-phase charging test is effectively checked, and the performance of switching the three-phase alternating current of the vehicle into the single-phase alternating current is effectively checked.

In a case where the plurality of three-phase ac charging tests include a connection confirmation function test, a CC resistance value of the vehicle is acquired in a process of performing the connection confirmation function test (i.e., the CC test) on the vehicle, and the CC resistance value of the vehicle is determined as a charging parameter of the connection confirmation function test. The connection confirmation function test is to detect the CC resistance value of the vehicle in the process of controlling the charging gun head of the vehicle to change from the first resistance value to the second resistance value. The second resistance value is far larger than the first resistance value, and the first resistance value and the second resistance value are set according to actual requirements.

And if the CC resistance value of the vehicle is within the preset resistance value error range, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the connection confirmation function test. Wherein, the compatibility of the connection confirmation function test is the compatibility of the connection confirmation function in the three-phase alternating current charging process of the vehicle. The preset resistance error range is the error range of the CC resistance of the charging gun head, and the specific numerical value of the preset resistance error range is set according to actual requirements.

And if the CC resistance value of the vehicle is not within the preset resistance value error range, determining that the three-phase alternating current charging compatibility of the vehicle does not meet the compatibility of the connection confirmation function test.

Specifically, the CC test with the connection confirmation function is to obtain the CC resistance value of the vehicle through the CAN message acquisition device in the process of controlling the CC resistance value of the adjustable CC resistance value charging gun head to change from 80 Ω to 5k Ω. If the CC resistance value of the vehicle is within the preset resistance value error range, the vehicle can correctly identify the CC resistance, and the charging gun head can charge the vehicle, and then the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the connection confirmation function test. And if the CC resistance value of the vehicle is not in the preset resistance value error range, the vehicle cannot correctly identify the CC resistance, and the charging gun head cannot charge the vehicle, the three-phase alternating current charging compatibility of the vehicle is determined to be not in accordance with the compatibility of the connection confirmation function test.

For example, when the CC resistance of the adjustable CC resistance charging gun head is controlled to be 200 Ω, the CC resistance of the vehicle is obtained to be 210 Ω through the CAN message acquisition device. Assuming that the preset resistance error range is the CC resistance +/-50 omega of the charging gun head, the CC resistance 210 omega of the vehicle is located at 200 +/-50 omega, the vehicle can correctly identify the CC resistance, and the charging gun head can charge the vehicle, and then the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the connection confirmation function test.

In the present embodiment, the charging parameter of the connection confirmation function CC test, i.e., the CC resistance value of the vehicle, is obtained by performing the connection confirmation function CC test on the vehicle. And then, the CC resistance value of the vehicle is judged to be within the preset resistance value error range, so that the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the connection confirmation function test, and the three-phase alternating current charging compatibility of the new energy automobile under the connection confirmation function test is effectively checked.

Under the condition that the multiple three-phase alternating-current charging tests comprise control and guide function tests, in the process of carrying out the control and guide function tests (namely CP tests) on the vehicle, a CP frequency test result, a CP peak value test result and a CP duty ratio test result of the vehicle are obtained, and the CP frequency test result, the CP peak value test result and the CP duty ratio test result are used as charging parameters of the control and guide function tests. The control and guide function test comprises a CP frequency test, a CP peak test and a CP duty ratio test of the vehicle.

And if the CP frequency test result, the CP peak value test result and the CP duty ratio test result all accord with corresponding preset test results, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the control guidance function test. The corresponding preset test result is a result that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the corresponding test in the control guidance function test. The compatibility of the control guidance function test is the compatibility of the control guidance function during the three-phase ac charging of the vehicle.

And if one of the CP frequency test result, the CP peak value test result and the CP duty ratio test result does not accord with the corresponding preset test result, determining that the three-phase alternating current charging compatibility of the vehicle does not meet the compatibility of the control guidance function test.

Specifically, in the CP frequency test, the CP frequency of the vehicle is obtained through the CAN message acquisition device in the process of controlling the CP frequency of the charging gun head to change within the range of 900Hz to 1100Hz through the CP signal transmitter. And if the CP frequency of the vehicle is within the preset frequency error range, the vehicle can correctly recognize the CP frequency, and the charging gun head can charge the vehicle, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the CP frequency test in the connection confirmation function test. The preset frequency error range is the error range of the CP frequency of the charging gun head, and the specific numerical value of the preset frequency error range is set according to actual requirements.

And if the CP frequency of the vehicle is not in the preset frequency error range, the vehicle cannot correctly identify the CP frequency, and the charging gun head cannot charge the vehicle, determining that the three-phase alternating current charging compatibility of the vehicle does not meet the compatibility of the CP frequency test in the connection confirmation function test.

For example, when the CP frequency of the charging gun head is controlled to be 1000Hz by the CP signal transmitter, the CP frequency of the vehicle is 1080Hz by the CAN message acquisition device. Assuming that the preset frequency error range is that the CP frequency of the charging gun head is +/-100, and 1080Hz is within the range of 1000 +/-100 Hz, the vehicle can correctly recognize the CP frequency, and the charging gun head can charge the vehicle, the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the CP frequency test in the connection confirmation function test.

And in the CP peak value test, before the charging gun head is connected with the alternating-current charging seat, the initial CP peak value of the charging gun head is controlled to fluctuate within the initial peak value threshold range of 12V +/-0.8V by the CP signal transmitter. And after the charging gun head is connected with the alternating-current charging seat and before an S2 switch of the vehicle is closed, acquiring a first CP peak value of the vehicle. The S2 switch of the vehicle is a vehicle charging switch specified by national standards.

And closing the S2 switch if the first CP peak value fluctuates within a first peak value threshold range of 9V +/-0.8V, which indicates that the vehicle can correctly identify the first CP peak value after the charging gun head is connected with the alternating-current charging seat and before the S2 switch of the vehicle is closed. And if the first CP peak value does not fluctuate in the first peak value threshold range of 9V +/-0.8V, which indicates that the vehicle fails to correctly identify the first CP peak value and the three-phase alternating current charging of the vehicle has a fault, outputting related information of the fault of the CP peak value test.

After closing the S2 switch, a second CP peak for the vehicle is obtained. And if the second CP peak value fluctuates within the second peak value threshold range of 6V +/-0.8V, which indicates that the vehicle can correctly identify the second CP peak value and can carry out three-phase alternating current charging on the vehicle, determining that the three-phase alternating current 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 threshold range of 6V ± 0.8V, indicating that the vehicle fails to correctly identify the second CP peak value and the three-phase ac charging of the vehicle is not possible, it is determined that the three-phase ac charging compatibility of the vehicle does not satisfy the compatibility of the CP peak value test in the connection confirmation function test.

The CP duty cycle test is to obtain the CP duty cycle of the vehicle after the special-shaped CP wave is output by the CP signal transmitter. And if the CP duty ratio of the vehicle is within the duty ratio threshold value range, the CP duty ratio can be correctly identified by the vehicle, and the three-phase alternating current charging can be carried out on the vehicle, so that the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the CP duty ratio test in the connection confirmation function test. And if the CP duty ratio of the vehicle is not in the duty ratio threshold value range, the vehicle cannot correctly identify the CP duty ratio, and the three-phase alternating current charging cannot be carried out on the vehicle, determining that the three-phase alternating current charging compatibility of the vehicle does not meet the compatibility of the CP duty ratio test in the connection confirmation function test.

And if the CP frequency test result, the CP peak value test result and the CP duty ratio test result all accord with the corresponding preset test results, the three-phase alternating current charging compatibility of the vehicle is shown to meet the compatibility of the CP frequency test, the compatibility of the CP peak value test and the compatibility of the CP duty ratio test in the connection confirmation function test, and the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the control guidance function test. And if one of the CP frequency test result, the CP peak value test result and the CP duty ratio test result does not accord with the corresponding preset test result, which indicates that the three-phase alternating current charging compatibility of the vehicle does not meet the compatibility of any one of the connection confirmation function tests, determining that the three-phase alternating current charging compatibility of the vehicle does not meet the compatibility of the control guidance function test.

It should be further noted that, as shown in fig. 4, the shaped CP wave output by the CP signal transmitter includes, but is not limited to, a shaped CP wave whose rising edge is a slope in the first coordinate as shown in fig. 4, a shaped CP wave whose falling edge is a slope in the second coordinate as shown in fig. 4, a shaped CP wave whose zero-crossing point is distorted in the third coordinate as shown in fig. 4, or another shaped CP wave whose zero-crossing point is distorted in the fourth coordinate as shown in fig. 4.

In this embodiment, the charging parameters of the control guidance function test, that is, the CP frequency test result, the CP peak test result, and the CP duty ratio test result of the vehicle, are obtained by performing the control guidance function CP test on the vehicle. And then, determining that the CP frequency test result, the CP peak value test result and the CP duty ratio test result of the vehicle all accord with corresponding preset test results so as to determine that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the control guidance function test, and effectively checking the three-phase alternating current charging compatibility of the new energy automobile under the control guidance function test.

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 yes, it is determined that the three-phase ac charging compatibility of the vehicle meets the preset compatibility condition, and information of the three-phase ac charging compatibility of the vehicle is output.

Specifically, in a three-phase alternating current power supply distortion test, a charging parameter of the three-phase alternating current power supply distortion test meets a preset parameter condition corresponding to the three-phase alternating current power supply distortion test, and indicates that an input current of a vehicle obtained in the three-phase alternating current power supply distortion test is within an input current threshold range and no ripple standard exceeding characteristic exists in an input current waveform of the vehicle, and then it is determined that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the three-phase alternating current power supply distortion test.

In the single-phase charging test, the charging parameters of the single-phase charging test conform to preset parameter conditions corresponding to the single-phase charging test, and the fact that a plurality of single-phase charging results obtained in the single-phase charging test all conform to preset charging results is indicated, and then it is determined that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the single-phase charging test.

In the connection confirmation function test, the charging parameters of the connection confirmation function test conform to preset parameter conditions corresponding to the connection confirmation function test, and if the CC resistance value obtained in the connection confirmation function test is within a preset resistance value error range, it is determined that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the connection confirmation function test.

In the control guidance function test, the charging parameters of the control guidance function test conform to preset parameter conditions corresponding to the control guidance function test, and the CP frequency test result, the CP peak value test result and the CP duty ratio test result which are obtained in the control guidance function test all conform to corresponding preset test results, so that the three-phase alternating current charging compatibility of the vehicle is determined to meet the compatibility of the control guidance function test.

And if the three-phase alternating current charging compatibility of the vehicle meets the compatibility of a three-phase alternating current power supply distortion test, the compatibility of a single-phase charging test, the compatibility of a connection confirmation function test and the compatibility of a control guidance function test, determining that the three-phase alternating current charging compatibility of the vehicle meets a preset compatibility condition, and outputting the information of the three-phase alternating current charging compatibility of the vehicle. And if the three-phase alternating current charging compatibility of the vehicle does not meet any one of the compatibility of the three-phase alternating current power supply distortion test, the compatibility of the single-phase charging test, the compatibility of the connection confirmation function test and the compatibility of the control guidance function test, determining that the three-phase alternating current charging compatibility of the vehicle does not meet the preset compatibility condition, and outputting guidance information of the three-phase alternating current charging compatibility of the vehicle.

in the present embodiment, the charging parameters of each three-phase ac charging test of the vehicle are acquired in the process of performing a plurality of three-phase ac charging tests on the vehicle, wherein the plurality of three-phase ac charging tests include at least two of a three-phase ac power source distortion test, a single-phase charging test, a connection confirmation function test, and a control guidance function test of the vehicle. The three-phase alternating current charging of the new energy automobile is subjected to a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test, so that a compatibility test of the three-phase alternating current charging of the new energy automobile is completed.

And judging whether the charging parameters of each three-phase alternating current charging test all meet the preset parameter conditions corresponding to the charging parameters of each three-phase alternating current charging test. If yes, determining that the three-phase alternating current charging compatibility of the vehicle meets the preset compatibility condition, and outputting information of the three-phase alternating current charging compatibility of the vehicle so as to effectively check the three-phase alternating current charging compatibility of the new energy vehicle, completely evaluate the three-phase alternating current charging, and facilitate guiding the vehicle to improve the design of the three-phase alternating current charging compatibility.

Example two

Based on the same inventive concept, a second embodiment of the present invention further provides a three-phase ac charging compatibility testing apparatus for a new energy vehicle, as shown in fig. 5, including:

the system comprises an acquisition module 201, a control module and a management module, wherein the acquisition module is used for acquiring charging parameters of each three-phase alternating current charging test of a vehicle in the process of carrying out multiple three-phase alternating current charging tests on the vehicle, and the multiple three-phase alternating current charging tests comprise at least two of a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test of the vehicle;

the judging module 202 is configured to judge whether the charging parameter of each three-phase alternating-current charging test meets a preset parameter condition corresponding to the charging parameter of each three-phase alternating-current charging test; if yes, determining that the three-phase alternating current charging compatibility of the vehicle meets a preset compatibility condition, and outputting information of the three-phase alternating current charging compatibility of the vehicle.

As an alternative embodiment, the obtaining module 201 is configured to obtain an input current and an input current waveform of a power battery of the vehicle during the three-phase alternating-current power source distortion test performed on the vehicle if the plurality of three-phase alternating-current charging tests include the three-phase alternating-current power source distortion test, and use the input current and the input current waveform as charging parameters of the three-phase alternating-current power source distortion, where the three-phase alternating-current power source distortion test is a test for controlling a three-phase alternating-current power source of the vehicle to output a special-shaped wave;

the determining module 202 is configured to determine that the three-phase ac charging compatibility of the vehicle meets the compatibility of the three-phase ac power distortion test if the input current is within the input current threshold range and a ripple exceeding characteristic does not exist in the input current waveform, where the ripple exceeding characteristic is a characteristic that a peak in the input current waveform exceeds a peak threshold and/or a trough in the input current waveform exceeds a trough threshold.

As an alternative embodiment, the obtaining module 201 is configured to, if the plurality of three-phase ac charging tests include the single-phase charging test, obtain a plurality of single-phase charging results of the vehicle during the single-phase charging test on the vehicle, and determine the plurality of single-phase charging results as the charging parameters of the single-phase charging test;

the determining module 202 is configured to determine that the three-phase ac charging compatibility of the vehicle meets the compatibility of the single-phase charging test if the plurality of single-phase charging results all conform to preset charging results.

As an alternative embodiment, the obtaining a plurality of single-phase charging parameters of the vehicle during the single-phase charging test of the vehicle includes:

As an optional embodiment, the obtaining a plurality of single-phase charging parameters of the vehicle during the single-phase charging test on the vehicle includes:

in the three-phase alternating current charging process of the vehicle, controlling the voltage of a certain phase of alternating current in three-phase alternating current of the vehicle not to be within a voltage threshold range, controlling the voltages of the other two-phase alternating current in the three-phase alternating current to be within the voltage threshold range, and obtaining the charging result of the other two-phase alternating current under the condition that the voltage difference value of the other two-phase alternating current is within a preset difference value range, and determining the charging result of the other two-phase alternating current as a fourth single-phase charging result;

in the three-phase alternating current charging process, controlling the voltage of a certain phase of alternating current in the three-phase alternating current not to be within the voltage threshold range, controlling the voltages of the other two-phase alternating currents in the three-phase alternating current to be within the voltage threshold range, and obtaining the charging result of the other two-phase alternating current under the condition that the voltage difference value of the other two-phase alternating currents is not within the preset difference value range, and determining the charging result of the other two-phase alternating current as a fifth single-phase charging result;

As an optional embodiment, the obtaining module 201 is configured to, if the multiple three-phase alternating-current charging tests include the connection confirmation function test, obtain a CC resistance value of the vehicle in a process of performing the connection confirmation function test on the vehicle, and determine the CC resistance value of the vehicle as a charging parameter of the connection confirmation function test, where the connection confirmation function test is to detect the CC resistance value of the vehicle in a process of controlling a charging gun head of the vehicle to change from a first resistance value to a second resistance value;

the determining module 202 is configured to determine that the three-phase ac charging compatibility of the vehicle meets the compatibility of the connection confirmation function test if the CC resistance of the vehicle is within a preset resistance error range.

As an optional embodiment, the obtaining module 201 is configured to, if the multiple three-phase ac charging tests include the control guidance function test, obtain a CP frequency test result, a CP peak test result, and a CP duty ratio test result of the vehicle in a process of performing the control guidance function test on the vehicle, and use the CP frequency test result, the CP peak test result, and the CP duty ratio test result as charging parameters of the control guidance function test, where the control guidance function test is a CP frequency test, a CP peak test, and a CP duty ratio test of the vehicle;

a determining module 202, configured to determine that the three-phase ac charging compatibility of the vehicle meets the compatibility of the control guidance function test if the CP frequency test result, the CP peak test result, and the CP duty ratio test result all meet corresponding preset test results, where the corresponding preset test result is a result that the three-phase ac charging compatibility of the vehicle meets the compatibility of a corresponding test in the control guidance function test.

Since the three-phase ac charging compatibility test device for the new energy vehicle introduced in this embodiment is a device used for implementing the three-phase ac charging compatibility test method for the new energy vehicle in the first embodiment of the present application, based on the three-phase ac charging compatibility test method for the new energy vehicle introduced in the first embodiment of the present application, a person skilled in the art can understand a specific implementation manner and various variations of the three-phase ac charging compatibility test device for the new energy vehicle in this embodiment, so how to implement the method in the first embodiment of the present application by the three-phase ac charging compatibility test device for the new energy vehicle is not described in detail herein. As long as a person skilled in the art implements the apparatus used in the method for testing three-phase ac charging compatibility of a new energy vehicle in the first embodiment of the present application, all of which are within the scope of protection of the present application.

EXAMPLE III

Based on the same inventive concept, a third embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the steps of any one of the methods for testing the three-phase ac charging compatibility of the new energy vehicle.

Example four

Based on the same inventive concept, a fourth embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the methods of the method for testing compatibility of three-phase ac charging of a new energy vehicle described in the previous embodiment.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause 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 which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A three-phase alternating current charging compatibility test method of a new energy automobile is characterized by comprising the following steps:

the method comprises the steps that in the process of carrying out multiple three-phase alternating current charging tests on a vehicle, charging parameters of each three-phase alternating current charging test of the vehicle are obtained, wherein the multiple three-phase alternating current charging tests comprise at least two of a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test of the vehicle;

2. The method of claim 1, wherein if the plurality of three-phase ac charging tests includes the three-phase ac power source distortion test, the method further comprises:

3. The method of claim 1, wherein if the plurality of three-phase ac charging tests includes the single-phase charging test, the method further comprises:

4. The method of claim 3, wherein the obtaining a plurality of single-phase charging parameters for the vehicle during the single-phase charging test for the vehicle comprises:

5. The method of claim 3, wherein said obtaining a plurality of single-phase charging parameters for the vehicle during the single-phase charging test for the vehicle comprises:

in the three-phase alternating current charging process, under the condition that the voltage of a certain phase of alternating current in the three-phase alternating current is controlled to be within the voltage threshold range and the voltages of the other two phases of alternating currents in the three-phase alternating current are not controlled to be within the voltage threshold range, the charging result of the alternating current is obtained, and the charging result of the phase of alternating current is determined as a sixth single-phase charging result.

6. The method of claim 1, wherein if the plurality of three-phase ac charging tests includes the connection confirmation function test, the method further comprises:

7. The method of claim 1, wherein if the plurality of three-phase ac charging tests includes the control-directed function test, the method further comprises:

and if the CP frequency test result, the CP peak value test result and the CP duty ratio test result all accord with corresponding preset test results, determining that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the control guidance function test, wherein the corresponding preset test results are the results that the three-phase alternating current charging compatibility of the vehicle meets the compatibility of the corresponding test in the control guidance function test.

8. The utility model provides a three-phase AC charging compatibility testing arrangement of new energy automobile which characterized in that includes:

the system comprises an acquisition module, a control module and a management module, wherein the acquisition module is used for acquiring charging parameters of each three-phase alternating current charging test of a vehicle in the process of carrying out multiple three-phase alternating current charging tests on the vehicle, and the multiple three-phase alternating current charging tests comprise at least two of a three-phase alternating current power supply distortion test, a single-phase charging test, a connection confirmation function test and a control guidance function test of the vehicle;

9. A computer arrangement comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method steps of any of claims 1-7 when executing the program.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method steps of any one of claims 1 to 7.