An electric vehicle alternating current charging compatibility test system and method

Abstract

The application relates to the technical field of alternating current (AC) charging of electric vehicles, and discloses an AC charging compatibility test system and method for electric vehicles, the method comprising: an AC charging device simulator, which is connected to a vehicle under test through a charging gun; the AC charging device simulator can simulate AC charging piles of different specifications and set interactive signals with the vehicle under test to perform AC charging function test on the vehicle under test, and obtain AC charging compatibility test data of the vehicle under test. According to the application, the AC charging device simulator can simulate AC charging piles of different specifications which need to be tested for compatibility, and set interactive signals with the electric vehicle to perform AC charging function test on the vehicle under test, so that the AC charging function of the electric vehicle can be verified in the early stage of vehicle development, thereby shortening the vehicle development cycle and reducing the development cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicle alternating current charging, in particular to an electric vehicle alternating current charging compatibility test system and method. BACKGROUND

[0002] Alternating current charging is a common way for electric vehicles to supplement power. To ensure that vehicle users have a good user experience during alternating current charging, compatibility testing between electric vehicles and alternating current charging piles of different specifications is essential during vehicle development. Currently, this work is usually tested during the road test process in the later stage of the vehicle development project. If compatibility problems are found between the electric vehicle and the alternating current charging pile at this stage, it will increase the vehicle validation period and cost.

[0003] Chinese patent application with publication number CN115469162A discloses a three-phase alternating current charging compatibility test method for new energy vehicles. The method includes: obtaining charging parameters of each three-phase alternating current charging test of the vehicle during the process of performing multiple three-phase alternating current charging tests on the vehicle, wherein the multiple three-phase alternating current charging tests include at least two of three-phase alternating current power distortion tests, single-phase charging tests, connection confirmation function tests, and control guidance function tests of the vehicle; determining whether the charging parameters of each three-phase alternating current charging test meet the preset parameter conditions corresponding to the charging parameters of each three-phase alternating current charging test; if so, determining that the three-phase alternating current charging compatibility of the vehicle meets the preset compatibility conditions, and outputting information of the three-phase alternating current charging compatibility of the vehicle. This method tests the compatibility of the three-phase alternating current charging of the new energy vehicle, effectively tests the three-phase alternating current charging compatibility, and completely evaluates the three-phase alternating current charging. Similarly, in this scheme, the test still needs to be performed during the road test process in the later stage of the vehicle development project.

[0004] Based on the above background, it is desirable to have a compatibility test system and method for electric vehicles and alternating current charging piles of different specifications, so that the alternating current charging function of the electric vehicle can be verified in the early stage of vehicle development, thereby reducing the vehicle development period and development cost. SUMMARY

[0005] The present application provides a test system and method for matching compatibility of electric vehicles and alternating current charging piles of different specifications, aiming to solve the above problems in the prior art.

[0006] The technical scheme of the present application is implemented as follows: an electric vehicle AC charging compatibility test system, comprising an AC charging device simulator, the AC charging device simulator is connected with a vehicle under test through a charging gun, the AC charging device simulator can simulate AC charging piles of different specifications and set interactive signals with the vehicle under test to perform AC charging function test on the vehicle under test, and obtain AC charging compatibility test data of the vehicle under test.

[0007] As a preferred scheme, the AC charging device simulator comprises a signal simulation module, an interactive control module and a power transmission module connected in sequence, and the signal simulation module, the interactive control module and the power transmission module are connected with the vehicle under test.

[0008] As a preferred scheme, the signal simulation module is connected with the vehicle under test through the charging gun, and is used for simulating control guide circuits of AC charging piles of different specifications to perform interoperability test on the vehicle under test.

[0009] As a preferred scheme, the interactive control module can manually set the specifications of the AC charging piles simulated by the signal simulation module, and the interactive control module performs signal interaction with the vehicle under test through the charging gun, and controls the opening and closing of the power transmission module according to the charging request of the vehicle under test.

[0010] As a preferred scheme, the power transmission module is connected with the vehicle under test through the charging gun, and provides AC electric energy of the simulated AC charging piles of different specifications for the vehicle under test according to the control signal of the interactive control module.

[0011] A test method, using the electric vehicle AC charging compatibility test system as described above, comprises the following steps:

[0012] Step S201, setting the AC charging device simulator, and setting the simulated AC charging pile specifications.

[0013] Step S202, connecting the AC charging device simulator with the vehicle under test through the charging gun.

[0014] Step S203, interacting with the vehicle under test through the AC charging device simulator outputting signals of the set simulated AC charging pile specifications.

[0015] Step S204, outputting electric energy of the set simulated AC charging pile specifications through the AC charging device simulator.

[0016] Step S205, obtaining charging compatibility data corresponding to working conditions according to the charging state of the vehicle under test.

[0017] As a preferred solution, the step S201 of setting the alternating current charging device simulator comprises: setting the alternating current charging pile power specification, connection confirmation signal parameter, control guide signal parameter, protection ground conductor continuity, etc. by the interaction control module.

[0018] As a preferred solution, the step S203 of outputting the set simulated alternating current charging pile specification signal by the alternating current charging device simulator and interacting with the measured vehicle comprises: interacting with the measured vehicle through the handshake signal of the charging gun by the interaction control module, and obtaining the charging request of the measured vehicle.

[0019] As a preferred solution, the step S204 of outputting the set electric energy by the alternating current charging device simulator comprises: controlling the power transmission module to output electric energy to the measured vehicle through the charging gun after the interaction control module obtains the charging request of the measured vehicle.

[0020] As a preferred solution, the alternating current charging compatibility test data comprises data of charging gun connection confirmation test, alternating current charging preparation test, alternating current charging start and charging phase test, whole vehicle state test after alternating current charging, alternating current charging connection control timing test, alternating current charging connection confirmation signal loss and recovery test, alternating current charging control guide signal loss and recovery test, and protection ground conductor loss and recovery test.

[0021] The electric vehicle alternating current charging compatibility test system has the advantages that different specifications of alternating current charging piles that need to be tested for compatibility can be simulated by the alternating current charging device simulator according to the measured vehicle, the interaction signal with the electric vehicle is set, and the measured vehicle is tested for alternating current charging function, so that the alternating current charging function of the electric vehicle can be verified in the early stage of vehicle development, and the vehicle development cycle is shortened and the development cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings constituting a part of the specification of the present application are used to provide a further understanding of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 is a schematic diagram of the electric vehicle alternating current charging compatibility test system of the present application.

[0024] Figure 2 is a flowchart of the electric vehicle alternating current charging compatibility test method of the embodiment of the present application.

[0025] In the figure: 10: AC charging device simulator, 20: charging gun, 30: vehicle under test, 100: signal simulation module, 200: interactive control module, 300: power transmission module; 500: AC charging port, 600: on-board charger, 700: power battery. DETAILED DESCRIPTION

[0026] The application will be described in detail below with reference to the drawings and embodiments. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0027] The following detailed description is exemplary and is intended to provide further details of the application. Unless otherwise specified, all technical terms used in the application have the same meanings as those generally understood by those skilled in the art. The terms used in the application are only for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the application.

[0028] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0029] As shown in Figure 1 , 2 Embodiment 1, Embodiment 1, an AC charging compatibility test system for electric vehicles, comprising an AC charging device simulator 10, the AC charging device simulator 10 is connected with the vehicle under test 30 through the charging gun 20, the AC charging device simulator 10 can simulate AC charging piles of different specifications and set interactive signals with the vehicle under test 30 to test the AC charging function of the vehicle under test 30 and obtain AC charging compatibility test data of the vehicle under test 30. Specifically, the AC charging device simulator 10 in the embodiment comprises a signal simulation module 100, an interactive control module 200 and a power transmission module 300 connected in sequence, the signal simulation module 100, the interactive control module 200 and the power transmission module 300 are connected with the vehicle under test 30 through the charging gun 20.

[0030] In the embodiment, the measured vehicle 30 is provided with an alternating current charging port 500, a vehicle-mounted charger 600 and a power battery 700 connected in sequence. The alternating current charging port 500 is used for plug-in cooperation with the charging gun 20. The charging gun 20 includes a charging gun line connected with the signal simulation module 100, the interactive control module 200 and the power transmission module 300 at one end. The charging gun line is provided with a charging gun head at the other end. The charging gun head is plug-in cooperated with the alternating current charging port 500, so that the electric energy and the electric signal can be transmitted between the alternating current charging device simulator 10 and the measured vehicle through the charging gun. When the electric energy enters the alternating current charging port from the power transmission module 300 through the charging gun, the electric energy is converted by the vehicle-mounted charger 600 into direct current electric energy, and then the direct current electric energy enters and exits the power battery 700 and supplements the electric energy of the power battery 700.

[0031] As a further implementation, in the embodiment, the signal simulation module 100 is connected with the measured vehicle 30 through the charging gun 20, and can be used for simulating the control guide circuit of the alternating current charging pile of different specifications to test the interoperability of the measured vehicle 30. In actual use, the specification of the actual alternating current charging pile which needs to be tested for compatibility is selected, and the control guide circuit of the alternating current charging pile of the specification is simulated by using the signal simulation module.

[0032] As a further implementation, the tester can manually set the specification related parameters of the alternating current charging device simulated by the signal simulation module 100 through the interactive control module 200, and can use the interactive control module 200 to interact with the measured vehicle 30 through the charging gun 20 to control the opening and closing of the power transmission module 300 according to the charging request of the measured vehicle 30.

[0033] As a further implementation, the power transmission module 300 is connected with the measured vehicle 30 through the charging gun 20, and provides the measured vehicle 30 with alternating current electric energy equivalent to the simulated alternating current charging pile of different specifications according to the control signal of the interactive control module 200. The alternating current electric energy is converted into direct current electric energy by the vehicle-mounted charger 600 to supplement the electric energy of the power battery 700.

[0034] In use, the alternating current charging function of the electric vehicle can be tested according to the different specifications of the alternating current charging pile which needs to be tested for compatibility by the alternating current charging device simulator, and the interactive signal of the electric vehicle is set to test the alternating current charging function of the measured vehicle, so that the alternating current charging function of the electric vehicle can be verified in the early stage of the whole vehicle development, thereby reducing the development cycle of the whole vehicle, reducing the development cost, and avoiding the situation that the compatibility problem is found in the road test process in the later stage of the whole vehicle development project in the prior art, thereby increasing the whole vehicle verification cycle and cost.

[0035] Embodiment 2, a test method, using the electric vehicle AC charging compatibility test system in the above embodiment, comprising the following steps:

[0036] Step S201, the AC charging device simulator 10 is set, specifically: through the interactive control module 200, the AC charging pile power specification, the connection confirmation signal parameter, the control guide signal parameter, the protection ground conductor continuity, etc. are set.

[0037] Step S202, the AC charging device simulator 10 is connected with the measured vehicle 30 through the charging gun 20.

[0038] Step S203, the AC charging device simulator 10 outputs the signal of the simulated AC charging pile specification set and interacts with the measured vehicle 30, specifically: through the interactive control module 200, the handshake signal is interacted with the measured vehicle 30 through the charging gun 20, and the charging request of the measured vehicle 30 is obtained.

[0039] Step S204, the AC charging device simulator 10 outputs the electric energy of the simulated AC charging pile specification set, specifically: after the interactive control module 200 obtains the charging request of the measured vehicle 30, the power transmission module 300 is controlled to output electric energy to the measured vehicle 30 through the charging gun 20, the output electric energy enters the measured vehicle through the AC charging port 500, and after being converted into direct current energy by the vehicle-mounted charger 600, the power battery 700 is supplemented with electric energy.

[0040] Step S205, according to the charging state of the measured vehicle 30, the charging compatibility data of the corresponding working condition is obtained. According to the obtained charging compatibility data, the verification of the AC charging function of the measured vehicle is completed, the development cycle of the whole vehicle is shortened, and the development cost is reduced.

[0041] In this embodiment, when the compatibility test of multiple specifications of AC charging piles is needed, step S205 further includes: repeating steps S201-S204, simulating different specifications of AC charging piles, and recording the corresponding charging compatibility data respectively.

[0042] Among them, the AC charging compatibility test data includes the data of different specifications of charging gun 20 connection confirmation test, AC charging preparation test, AC charging start and charging phase test, vehicle state test after AC charging, AC charging connection control timing test, AC charging connection confirmation signal loss and recovery test, AC charging control guide signal loss and recovery test, protection ground conductor loss and recovery test.

[0043] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixed", and similar terms should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. In this application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0044] Although the embodiments of the application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. A test method characterized by, The application discloses an electric vehicle alternating current charging compatibility test system, which comprises an alternating current charging device simulator (10) connected with a vehicle (30) to be tested through a charging gun (20), wherein the alternating current charging device simulator (10) can simulate alternating current charging piles of different specifications and set interactive signals with the vehicle (30) to be tested to test the alternating current charging function of the vehicle (30) to be tested and acquire alternating current charging compatibility test data of the vehicle (30) to be tested. In step S201, the alternating current charging device simulator (10) is set, and the simulated alternating current charging pile specification is set. In step S202, the alternating current charging device simulator (10) is connected with the vehicle (30) to be tested through the charging gun (20). In step S203, the alternating current charging device simulator (10) outputs the set signal of the simulated alternating current charging pile specification to interact with the vehicle (30) to be tested. In step S204, the alternating current charging device simulator (10) outputs the set electric energy of the simulated alternating current charging pile specification. In step S205, the charging compatibility data of the corresponding working condition is acquired according to the charging state of the vehicle (30) to be tested. In step S201, the alternating current charging device simulator (10) is set, and the simulated alternating current charging pile specification is set. The alternating current charging compatibility test data comprises data of charging gun (20) connection confirmation test, alternating current charging preparation test, alternating current charging start and charging stage test, vehicle state test after alternating current charging, alternating current charging connection control timing test, alternating current charging connection confirmation signal loss and recovery test, alternating current charging control guide signal loss and recovery test, and protection ground conductor loss and recovery test.

2. The test method of claim 1, wherein: In step S203, the alternating current charging device simulator (10) outputs the set signal of the simulated alternating current charging pile specification to interact with the vehicle (30) to be tested.

3. The test method of claim 1, wherein: In step S204, the alternating current charging device simulator (10) outputs the set electric energy of the simulated alternating current charging pile specification.

4. The test method of claim 1, wherein: The alternating current charging device simulator (10) comprises a signal simulation module (100), an interactive control module (200) and a power transmission module (300) connected in sequence, and the signal simulation module (100), the interactive control module (200) and the power transmission module (300) are connected with the vehicle (30) to be tested.

5. The test method of claim 4, wherein: The signal simulation module (100) is connected with the measured vehicle (30) through the charging gun (20), and is used for simulating the control guide circuit of different specifications of alternating current charging piles to test the interoperability of the measured vehicle (30).

6. The test method of claim 5, wherein: The interactive control module (200) can manually set the specification of the alternating current charging pile simulated by the signal simulation module (100), and the interactive control module (200) can interact with the measured vehicle (30) through the charging gun (20), and control the opening and closing of the power transmission module (300) according to the charging request of the measured vehicle (30).

7. The test method of claim 6, wherein: The power transmission module (300) is connected with the measured vehicle (30) through the charging gun (20), and provides alternating current electric energy of different specifications of the simulated alternating current charging pile for the measured vehicle (30) according to the control signal of the interactive control module (200).

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