Charging and discharging test method and charging and discharging test system for daily-standard electric vehicle

Abstract

The embodiment of the invention provides a charging and discharging test method and a charging and discharging test system for a daily-standard electric vehicle, which are applied to a control unit of the charging and discharging test system, and the method comprises the following steps: receiving a first communication message sent by a to-be-tested vehicle; according to the target battery voltage and the preset output voltage of the charging and discharging unit, charging and discharging compatibility detection is carried out on the charging and discharging unit and the to-be-detected vehicle; if the charging and discharging compatibility detection is passed, determining a target charging and discharging standard matched with the to-be-detected vehicle according to the charging and discharging version information; and determining that the to-be-tested vehicle executes a corresponding test process according to the charging and discharging indication information. According to the invention, on the basis of the safety of the charging and discharging test system, the problems of low openness, low safety and the like of the charging and discharging test of the existing electric vehicle in the charging and discharging process can be effectively solved.

Description

Technical Field

[0001] The present application relates to the field of automobile control technology, and in particular to a Japanese standard electric vehicle charging and discharging test method and a charging and discharging test system. Background Art

[0002] With the vigorous development of the new energy electric vehicle industry, the charging and discharging test of electric vehicles is a comprehensive and complex process.

[0003] Currently, most electric vehicle charging and discharging test solutions are implemented around the Japanese standard charging function. For example, a conversion connector can be added to the electric vehicle charging and discharging test system to achieve the Japanese standard electric vehicle charging test function.

[0004] However, in this way, users cannot intuitively experience the real process of Japanese standard charging and discharging tests, and most Japanese standard charging test processes only test electric vehicles with a single type of charging protocol, and cannot achieve the selection of charging protocol standards, which has great limitations. Summary of the invention

[0005] In view of this, the purpose of this application is to provide a Japanese standard electric vehicle charging and discharging test method and charging and discharging test system, which can effectively solve the problem of low openness of charging and discharging tests of existing electric vehicles during the charging and discharging process on the basis of the safety of the charging and discharging test system, such as the inability to select charging protocol standards, incomplete data, inability to simulate real discharge and charging tests, and low safety.

[0006] In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0007] In a first aspect, an embodiment of the present application provides a Japanese standard electric vehicle charging and discharging test method, which is applied to a control unit of a charging and discharging test system, wherein the charging and discharging test system further comprises: a charging and discharging unit, wherein the charging and discharging unit is connected to a charging interface of a vehicle to be tested via a charging gun; the method comprises:

[0008] Receiving a first communication message sent by the vehicle to be tested, wherein the first communication message includes: a target battery voltage, charge and discharge indication information, and charge and discharge version information;

[0009] Performing a charge-discharge compatibility test on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and a preset output voltage of the charge-discharge unit;

[0010] If the charge-discharge compatibility test passes, determining a target charge-discharge standard that matches the vehicle to be tested according to the charge-discharge version information;

[0011] According to the charge and discharge indication information, it is determined that the vehicle to be tested executes a corresponding test process.

[0012] Optionally, the preset output voltage includes: a charge and discharge threshold voltage and a minimum output voltage of the charge and discharge unit;

[0013] The step of performing charge-discharge compatibility detection on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charge-discharge unit includes:

[0014] If the target battery voltage is not within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, determining that the charge and discharge compatibility test fails;

[0015] If the target battery voltage is within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, it is determined that the charge and discharge compatibility test has passed.

[0016] Optionally, the first communication message further includes: a set maximum charging time of the vehicle to be tested, a second maximum charging time and a current battery capacity of the vehicle to be tested;

[0017] Before determining, according to the charge and discharge indication information, that the vehicle to be tested executes a corresponding test process, the method further includes:

[0018] Calculating the available output current of the charge-discharge unit according to the rated power of the charge-discharge unit and the charge-discharge threshold voltage;

[0019] According to the available output current, the current battery capacity, the set maximum charging time and the second maximum charging time, setting the target maximum charging time and the remaining charging time of the charging and discharging unit;

[0020] A second communication message is sent to the vehicle to be tested, wherein the second communication message includes: the target maximum charging time and the remaining charging time.

[0021] Optionally, the first communication message further includes: the maximum battery voltage of the vehicle to be tested;

[0022] Before performing charge-discharge compatibility detection on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charge-discharge unit, the method further includes:

[0023] The charge and discharge threshold voltage is set to a minimum value between the maximum battery voltage and a preset available output voltage of the charge and discharge unit.

[0024] Optionally, the method further comprises:

[0025] If a guidance control signal triggered by the vehicle under test is detected, it means that the vehicle under test is allowed to perform the test process, wherein the guidance control signal is: a guidance control signal triggered after the vehicle under test determines that the target maximum charging time and the remaining charging time meet the preset vehicle requirements.

[0026] Optionally, the method further comprises:

[0027] If a guidance control signal triggered by the vehicle under test is detected, a third communication message is sent to the vehicle under test, and the third communication message includes: first indication information and second indication information, the first indication information is used to indicate that the charging and discharging unit is in the energy transmission stage, and the second indication information is used to indicate that the charging and discharging unit has not received a shutdown request.

[0028] Optionally, the first communication message further includes: a maximum charging current;

[0029] The step of determining, according to the charge and discharge indication information, that the vehicle to be tested executes a corresponding test process comprises:

[0030] According to the target charging and discharging standard and based on the maximum charging current, the charging and discharging unit is controlled to perform a charging test on the vehicle to be tested.

[0031] Optionally, determining that the vehicle to be tested executes a corresponding test process according to the charge and discharge indication information includes:

[0032] According to the target charge and discharge standard, the charge and discharge unit is controlled to perform a discharge test on the vehicle to be tested at a preset voltage lower than the target battery voltage of the vehicle to be tested and using a preset discharge current.

[0033] Optionally, the method further comprises:

[0034] Detecting an abnormal condition in a charging and discharging test process of the vehicle under test according to a fourth communication message of the vehicle under test;

[0035] Among them, the fourth communication message includes: charging and discharging process fault information.

[0036] In a second aspect, an embodiment of the present application provides a charge and discharge test system, the charge and discharge test system comprising: a control unit, a charge and discharge unit and a communication unit, the charge and discharge unit comprising: an energy conversion circuit and a guidance circuit, the energy conversion circuit, the guidance circuit and the communication unit in the charge and discharge unit are also connected to a charging interface of a vehicle to be tested through a charging gun;

[0037] The control unit is also connected to the energy conversion circuit, the steering circuit and the communication unit, and the control unit is used to execute any method described in the first aspect above.

[0038] Compared with the prior art, this application has the following beneficial effects:

[0039] The embodiment of the present application proposes a Japanese standard electric vehicle charging and discharging test method and a charging and discharging test system, which are applied to a control unit of the charging and discharging test system. The charging and discharging test system can be composed of a charging and discharging unit, which is connected to the charging interface of the vehicle to be tested through a charging gun, and is used to perform a charging and discharging test on the vehicle to be tested; the method may include: receiving a first communication message sent by the vehicle to be tested, wherein the first communication message may be composed of a target battery voltage, charging and discharging indication information, and charging and discharging version information; performing a charging and discharging compatibility test on the charging and discharging unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charging and discharging unit, thereby improving the test efficiency between the charging and discharging unit and the vehicle to be tested, and ensuring the safe and normal operation between the charging and discharging unit and the vehicle to be tested; if the charging and discharging compatibility test passes, according to the charging and discharging version information, that is, the charging and discharging test system provided by the present application can support multiple Japanese standard charging and discharging standards, and then determining the charging and discharging standard that matches the target charging and discharging standard that matches the vehicle to be tested, and then executing the corresponding test process for the vehicle to be tested according to the charging and discharging indication information and the target charging and discharging standard, to realize the charging and discharging test function of the charging and discharging test system, so that the charging and discharging test system has strong openness. At the same time, based on the safety of the charging and discharging test system, it effectively solves the problems of low development of charging and discharging tests for existing electric vehicles during the charging and discharging process, long discharge time, incomplete data, and low safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of the structure of a charge and discharge test system provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of a Japanese standard electric vehicle charging and discharging test method provided in an embodiment of the present application Figure 1 ;

[0043] Figure 3 A schematic diagram of a Japanese standard electric vehicle charging and discharging test method provided in an embodiment of the present application Figure 2 ;

[0044] Figure 4A schematic diagram of a Japanese standard electric vehicle charging and discharging test method provided in an embodiment of the present application Figure 3 ;

[0045] Figure 5 A schematic diagram of the structure of a Japanese standard electric vehicle charging and discharging test device provided in an embodiment of the present application;

[0046] Figure 6 A schematic diagram of the structure of a control unit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0049] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0050] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0051] In order to clearly describe a Japanese standard electric vehicle charging and discharging test method and a charging and discharging test system provided in an embodiment of the present application, the charging and discharging test system is first described in detail in conjunction with the accompanying drawings. Figure 1 This is a schematic diagram of the structure of a charge and discharge test system provided in an embodiment of the present application. Figure 1As shown, the charge and discharge test system 100 may include: a control unit 110 , a charge and discharge unit 120 and a communication unit 130 .

[0052] The charge and discharge unit 120 may include: an energy conversion circuit 121 and a steering circuit 122 .

[0053] The energy conversion circuit 121, the steering circuit 122 and the communication unit 130 in the charge and discharge unit 120 are also connected to the charging interface of the vehicle to be tested through a charging gun; the control unit 110 is also connected to the energy conversion circuit 121, the steering circuit 122 and the communication unit 130 to realize the charging and discharging functions of the vehicle to be tested and other functions to be tested. Other functions to be tested can be selected according to actual conditions and are not limited here.

[0054] The control unit 110 is used to execute the Japanese standard electric vehicle charging and discharging test method.

[0055] The charging and discharging unit 120 is used to cooperate with the control unit 110 to realize the charging and discharging functions of the vehicle under test. Among them, through the guidance circuit 122 and the energy conversion circuit 121 to cooperate with the control unit 110, when executing the charging test process, the contactor K1 and the contactor K2 on the DC+ and DC- in the charging and discharging unit 120 are first closed, and then the energy conversion circuit 121 is set to the DC source mode to charge the vehicle under test through the energy conversion circuit 121; when performing the discharge test process, on the basis of closing the contactor K1 and the contactor K2 on the DC+ and DC- in the charging and discharging unit 120, the energy conversion circuit 121 is set to the load mode, and the bypass contactor Kd is closed at the same time, and the diode D1 is bypassed, so that the battery voltage of the vehicle under test is fed back to the preset power grid through the energy conversion circuit 121.

[0056] It should be noted that in another possible implementation, Figure 1 The bypass contactor Kd and diode D1 in the circuit can also realize the charging and discharging functions of the vehicle under test.

[0057] The energy conversion circuit 121 is used to provide a bidirectional AC / DC energy conversion interface for the charge and discharge test system 100 so that electric energy can flow in both directions, and cooperates with the steering circuit 122 to realize the charging and discharging functions of the vehicle under test.

[0058] The steering circuit 122 is used to ensure the safety and efficiency of the vehicle under test during the charging process.

[0059] The communication unit 130 is used to complete the preset message interaction between the charge and discharge test system and the vehicle to be tested. The preset message can be selected according to the actual situation. For example, the messages of the charge and discharge test system are H108, H109, ​​H208, and H209; the messages of the vehicle to be tested are H100, H101, H102, H200, and H201. The messages of the charge and discharge unit and the vehicle to be tested jointly complete the entire charge and discharge process interaction of the charge and discharge test system. The charge and discharge unit can be selected according to the actual situation. For example, the charge and discharge unit can be a charger.

[0060] It should be noted that when the charging and discharging unit and the vehicle to be tested interact with each other through the S+ line and the S- line in the pilot circuit 122, the vehicle to be tested interacts with each other. In addition, it should be noted that the charging and discharging test system provided by the present application can display various status information in real time in a graphical manner, and record the information of each channel in a timing diagram, log, etc., which is convenient for tracking the whole process, supports secondary development by users, and is compatible with different models of power supplies and loads.

[0061] The charge and discharge test system provided by the present application is composed of a control unit, a charge and discharge unit and a communication unit, wherein the charge and discharge unit can be composed of an energy conversion circuit and a guiding circuit, and the energy conversion circuit, the guiding circuit and the communication unit in the charge and discharge unit are also connected to the charging interface of the vehicle to be tested through a charging gun; the control unit is also connected to the energy conversion circuit, the guiding circuit and the communication unit to realize the charge and discharge test of the vehicle to be tested, and the control unit is used to execute the Japanese standard electric vehicle charge and discharge test method. Thus, the present application can realize the real simulation of the Japanese standard charge and discharge process through the control unit, the charge and discharge unit and the communication unit, and improve the comprehensiveness and systematicness of the user's test of the Japanese standard vehicle to be tested. At the same time, the charge and discharge test system provided by the present application follows the principle of high and low voltage separation in terms of electrical design, that is, the connection between the energy conversion circuit and the vehicle to be tested is a high voltage line, and the connection between the guiding circuit and the vehicle to be tested is a low voltage line.

[0062] The following is a detailed explanation and description of the Japanese standard electric vehicle charging and discharging test method provided in the above embodiment of the present application in conjunction with the accompanying drawings. Figure 2 A schematic diagram of a Japanese standard electric vehicle charging and discharging test method provided in an embodiment of the present application Figure 1 .like Figure 2 As shown, the method is applied to a control unit of a charge and discharge test system, and may include:

[0063] S201. Receive a first communication message sent by a vehicle to be tested.

[0064] In one possible implementation, the charging gun is plugged into the charging interface of the vehicle to be tested, and the vehicle to be tested determines whether the charging and discharging test system is plugged in through the CPD signal. The CPD signal is used to control and adjust the working state of the charging and discharging unit 120. When the vehicle to be tested determines that the gun is plugged in, the control unit starts the Japanese standard electric vehicle charging and discharging test process, and the switch S1 in the charging and discharging unit 120 is closed, which is used to indicate the start of the Japanese standard electric vehicle charging and discharging test process. The vehicle to be tested begins to send all messages of the vehicle to be tested according to the preset periodicity. For example, the vehicle message may include H100, H101, H102, H200, H201, etc. The control unit in the charging and discharging test system receives all messages of the vehicle to be tested, wherein the first communication message sent by the vehicle to be tested may include: target battery voltage Target Battery Voltage, charging and discharging indication information VehicleDischg CompatibilityFlag and charging and discharging version information CHAdeMO control protocol number. Among them, the preset period can be selected according to the actual situation, for example, the preset period can be 100ms.

[0065] The target battery voltage Target Battery Voltage is used to indicate the real-time battery voltage of the vehicle under test. The charge and discharge indication information Vehicle Dischg CompatibilityFlag is used to indicate whether the vehicle under test supports the discharge function. The charge and discharge version information CHAdeMO control protocol number is used to indicate the charge and discharge version information that the vehicle under test can support.

[0066] It should be noted that the target battery voltage Target Battery Voltage, the charge and discharge indication information Vehicle Dischg CompatibilityFlag and the charge and discharge version information CHAdeMO controlprotocol number in the first communication message are all contents in the vehicle message H102 to be tested.

[0067] S202: Perform a charge-discharge compatibility test on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charge-discharge unit.

[0068] In one possible implementation, the control unit in the charge and discharge test system performs charge and discharge compatibility detection on the charge and discharge unit and the vehicle to be tested based on the relationship between the target battery voltage Target Battery Voltage and the preset output voltage of the charge and discharge unit. The preset output voltage of the charge and discharge unit can be selected according to actual conditions, and no restriction is made here.

[0069] S203: If the charge-discharge compatibility test passes, determine a target charge-discharge standard that matches the vehicle to be tested according to the charge-discharge version information.

[0070] The charge and discharge version information in the charge and discharge test system can be stored in the memory of the control unit. The charge and discharge version information can be selected according to actual conditions, for example, the charge and discharge version information can be selected as CHAdeMo2.0 version, CHAdeMo1.1 version, CHAdeMo1.0 version, CHAdeMo0.9 version, etc.

[0071] It should be noted that the charge and discharge version information in the charge and discharge test system provided in the present application may include other charge and discharge version information in addition to the above examples, which should not be understood as a limitation to the present application.

[0072] In one possible implementation, if the charge and discharge compatibility test passes, the target charge and discharge standard in the first communication message (for example, the H102 message) sent to the vehicle to be tested is determined according to the charge and discharge version information in the charge and discharge test system, so as to select the corresponding matching charge and discharge version in the existing charge and discharge test system.

[0073] It should be noted that if the target charge and discharge standard in the first communication message (eg H102 message) sent by the vehicle to be tested is not in the charge and discharge version information in the charge and discharge test system, the charge and discharge test process of the target is exited.

[0074] S204: Determine the corresponding test process for the vehicle to be tested according to the charge and discharge indication information.

[0075] In one possible implementation, after determining the target charge and discharge standard that matches the vehicle to be tested, the control unit may perform the corresponding charge and discharge test according to the target charge and discharge standard that matches the vehicle to be tested and the charge and discharge indication information Vehicle DischgCompatibilityFlag. That is, according to the charge and discharge indication information Vehicle Dischg CompatibilityFlag in the first communication message, it is determined whether the vehicle to be tested performs the corresponding test process. That is, if the charge and discharge indication information Vehicle Dischg CompatibilityFlag is 1, it means that the vehicle to be tested performs the discharge process; if the charge and discharge indication information Vehicle Dischg CompatibilityFlag is 0, it means that the vehicle to be tested performs the charging process.

[0076] The embodiment of the present application proposes a Japanese standard electric vehicle charging and discharging test method, which is applied to a control unit of a charging and discharging test system. The charging and discharging test system can be composed of a charging and discharging unit, which is connected to the charging interface of a vehicle to be tested through a charging gun, and is used to perform a charging and discharging test on the vehicle to be tested; the method may include: receiving a first communication message sent by the vehicle to be tested, wherein the first communication message may be composed of a target battery voltage, charging and discharging indication information, and charging and discharging version information; performing a charging and discharging compatibility test on the charging and discharging unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charging and discharging unit, thereby improving the test efficiency between the charging and discharging unit and the vehicle to be tested, and ensuring the safe and normal operation between the charging and discharging unit and the vehicle to be tested; if the charging and discharging compatibility test passes, according to the charging and discharging version information, that is, the charging and discharging test system provided by the present application can support multiple Japanese standard charging and discharging standards, and then determining the charging and discharging standard that matches the target charging and discharging standard that matches the vehicle to be tested, and then executing the corresponding test process for the vehicle to be tested according to the charging and discharging indication information and the target charging and discharging standard, thereby realizing the charging and discharging test function of the charging and discharging test system, so that the charging and discharging test system has strong openness. At the same time, based on the safety of the charging and discharging test system, it effectively solves the problems of low development of charging and discharging tests for existing electric vehicles during the charging and discharging process, long discharge time, incomplete data, and low safety.

[0077] Optionally, in a possible implementation embodiment, the preset output voltage may include: a charge and discharge threshold voltage and a minimum output voltage of the charge and discharge unit.

[0078] The available output voltage of the charge-discharge unit may represent the available rated output voltage of the charge-discharge unit.

[0079] The minimum output voltage of the charge-discharge unit is used to indicate the minimum value of the voltage actually output by the charge-discharge unit.

[0080] In a possible embodiment, the method described above performs charge-discharge compatibility detection on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charge-discharge unit, which may include:

[0081] If the target battery voltage is not within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, it is determined that the charge and discharge compatibility test fails.

[0082] In one possible implementation, if the target battery voltage Target Battery Voltage is not within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, that is, if the target battery voltage Target Battery Voltage is greater than the charge and discharge threshold voltage or less than the minimum output voltage of the charge and discharge threshold voltage, it is determined that the charge and discharge unit is incompatible with the vehicle to be tested, that is, the charge and discharge compatibility test of the charge and discharge unit fails, and the control unit controls the vehicle to be tested to exit the subsequent charge and discharge test process.

[0083] If the target battery voltage is within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, it is determined that the charge and discharge compatibility test has passed.

[0084] In one possible implementation, if the target battery voltage Target Battery Voltage is within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, that is, if the target battery voltage Target Battery Voltage is less than or equal to the charge and discharge threshold voltage or greater than or equal to the minimum output voltage of the charge and discharge threshold voltage, then it is determined that the charge and discharge unit is compatible with the vehicle to be tested, that is, the charge and discharge compatibility test of the charge and discharge unit is passed, and the control unit controls the vehicle to be tested to perform subsequent charge and discharge test processes.

[0085] In the Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application, the preset output voltage can be composed of the charging and discharging threshold voltage and the minimum output voltage of the charging and discharging unit; if the target battery voltage is not within the voltage range from the charging and discharging threshold voltage to the minimum output voltage, it is determined that the charging and discharging compatibility test fails, and the control unit controls the vehicle to be tested to exit the subsequent charging and discharging test process; if the target battery voltage is within the voltage range from the charging and discharging threshold voltage to the minimum output voltage, it is determined that the charging and discharging compatibility test passes, and the control unit controls the vehicle to be tested to perform the subsequent charging and discharging test process. Therefore, the present application improves the test efficiency and compatibility between the charging and discharging unit and the vehicle to be tested by judging the compatibility between the charging and discharging unit and the vehicle to be tested, and ensures the safe and normal operation between the charging and discharging unit and the vehicle to be tested.

[0086] Optionally, in a possible implementation embodiment, the first communication message may further include: a set maximum charging time MaxChgingTime10s of the vehicle to be tested, a second maximum charging time MaxChgingTime1Min and a current battery capacity of the vehicle to be tested.

[0087] It should be noted that the set maximum charging time MaxChgingTime10s, the second maximum charging time MaxChgingTime1Min and the current battery capacity of the vehicle under test in the first communication message are all contents of the vehicle under test message H101.

[0088] exist Figure 2 On this basis, the Japanese standard electric vehicle charging and discharging test method provided in the above embodiment of the present application is explained and illustrated in detail in combination with the accompanying drawings as follows. Figure 3 A schematic diagram of a Japanese standard electric vehicle charging and discharging test method provided in an embodiment of the present application Figure 2 .like Figure 3 As shown, in the above method, according to the charge and discharge indication information, it is determined whether the vehicle to be tested performs the discharge process or the charging process. The method may also include:

[0089] S301 : Calculate the available output current of the charge-discharge unit according to the rated power and charge-discharge threshold voltage of the charge-discharge unit.

[0090] In one possible implementation, after the compatibility test between the vehicle to be tested and the charging and discharging unit is passed, the available output current of the charging and discharging unit can be calculated, and the available output current of the charging and discharging unit can be obtained by dividing the rated power of the charging and discharging unit by the charging and discharging threshold voltage.

[0091] It should be noted that the available output current dynamically updates the available output current of the charging and discharging unit during the entire charging process.

[0092] S302: Set a target maximum charging time and a remaining charging time for the charging and discharging unit according to the available output current, the current battery capacity, the set maximum charging time and the second maximum charging time.

[0093] In one possible implementation, the maximum charging time MaxChgingTime10s and the second maximum charging time MaxChgingTime1Min are set according to the available output current, the current battery capacity, that is, the charge and discharge test system can make an estimate based on the current battery capacity and the available output current. If the charging time is in units of 10s, the second maximum charging time MaxChgingTime1Min is set to 0x00; if the charging time is in units of 1min, the maximum charging time MaxChgingTime10s is set to 0xFF. By converting the set maximum charging time MaxChgingTime10s to units of min and setting the parameter to the initial value of the remaining charging time of the charging and discharging unit, the remaining charging time of the charging and discharging unit is reduced in real time during the charging process. Among them, the target maximum charging time is used to indicate the time required to complete the charging of the vehicle to be tested. The remaining charging time is used to indicate the time required from the current charging time to the target maximum charging time.

[0094] S303: Send a second communication message to the vehicle to be tested.

[0095] The second communication message includes: a target maximum charging time and a remaining charging time.

[0096] In one possible implementation, the parameters set by the control unit, such as the target maximum charging time and the remaining charging time, are sent to the vehicle to be tested in the form of a second communication message at a preset period (such as 100ms). That is, the second communication message in this application is a message of the charging and discharging test system, such as H108, H109, ​​H208, and H209.

[0097] The Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application, the first communication message may also be composed of the set maximum charging time, the second maximum charging time and the current battery capacity of the vehicle to be tested; the available output current of the charging and discharging unit is calculated according to the rated power and the charging and discharging threshold voltage of the charging and discharging unit; then the target maximum charging time and the remaining charging time of the charging and discharging unit are set according to the available output current, the current battery capacity, the set maximum charging time and the second maximum charging time; and the second communication message is sent to the vehicle to be tested, and the second communication message may include: the target maximum charging time and the remaining charging time. Therefore, the present application clearly and truly simulates the time changes in the test process of Japanese standard charging and discharging and the changes in charging and discharging data during charging and discharging by setting the target maximum charging time and the remaining charging time.

[0098] Optionally, in a possible implementation, the first communication message may further include: a maximum battery voltage of the vehicle to be tested, wherein the maximum battery voltage of the vehicle to be tested is used to evaluate the charging state of the battery of the vehicle to be tested and the health state of the overall electrical system.

[0099] In a possible embodiment, before performing a charge-discharge compatibility test on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charge-discharge unit in the above method, the method may further include:

[0100] The charge and discharge threshold voltage is set to the minimum value of the maximum battery voltage and the preset available output voltage of the charge and discharge unit.

[0101] In one possible implementation, first, the charge and discharge threshold voltage is set to the minimum value between the maximum battery voltage and the preset available output voltage of the charge and discharge unit to ensure the stability and safety of the charge and discharge test system. Secondly, the charge and discharge threshold voltage is set to the minimum value between the maximum battery voltage and the preset available output voltage of the charge and discharge unit to determine the minimum voltage level of the vehicle under test during the charge and discharge test, ensuring the stability and safety during the charge and discharge test.

[0102] In the Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application, the first communication message may also be composed of the maximum battery voltage of the vehicle to be tested; by setting the charge and discharge threshold voltage to the minimum value of the maximum battery voltage and the preset available output voltage of the charge and discharge unit, the minimum voltage level of the vehicle to be tested during the charge and discharge test process can be determined to ensure stability and safety during the charge and discharge test process.

[0103] Optionally, in a possible implementation example, the method may further include:

[0104] If the pilot control signal VCP triggered by the vehicle to be tested is detected, it means that the vehicle to be tested is allowed to perform the test process.

[0105] The guidance control signal VCP is a guidance control signal triggered after the vehicle under test determines that the target maximum charging time and the remaining charging time meet the preset vehicle requirements.

[0106] In one possible implementation, if the vehicle under test receives a message from the charge and discharge test system (such as H108, H109, ​​H208, H209) and meets the charge and discharge requirements of the vehicle under test, the vehicle under test will close the pilot control signal VCP to notify the charge and discharge test system to allow charging and discharging. At this time, the charge and discharge test system closes the pilot switch S2, so that the charge and discharge contactors (such as K5 and K6) in the vehicle under test are closed, indicating that the vehicle under test is ready for charging and discharging, thereby laying the foundation for realizing the charge and discharge test process between the vehicle under test and the charge and discharge test system.

[0107] The Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application, if the guidance control signal triggered by the vehicle to be tested is detected, the charging and discharging unit is controlled to transfer energy with the vehicle to be tested, wherein the guidance control signal is a guidance control signal triggered after the vehicle to be tested determines the target maximum charging time and the remaining charging time meet the preset vehicle requirements. Therefore, the present application can realize the charging and discharging test process between the vehicle to be tested and the charging and discharging test system through the transmission of the guidance control signal.

[0108] Optionally, in a possible implementation example, the method may further include:

[0109] If the guidance control signal VCP triggered by the vehicle to be tested is detected, a third communication message is sent to the vehicle to be tested.

[0110] The third communication message may include: first indication information EVPSStatus=1 and second indication information Chg Or Dischg StopControl=0. The first indication information EVPSStatus=1 is used to indicate that the charge and discharge unit is in the energy transmission stage; the second indication information Chg Or Dischg StopControl=0 is used to indicate that the charge and discharge unit has not received a stop request.

[0111] In one possible implementation, if a guidance control signal VCP triggered by the vehicle to be tested is detected, indicating that the vehicle to be tested is allowed to carry out the test process, the charge and discharge test system closes the guidance switch S2. At this time, the third communication message in the charge and discharge test system can be set, such as the first indication information EVPSStatus=1, the second indication information Chg Or DischgStopControl=0, to indicate that the charge and discharge test system enters the energy transmission stage and there is no shutdown request.

[0112] It should be noted that the first indication information and the second indication information in the third communication message both belong to the message H209 of the charge and discharge test system.

[0113] The Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application, if the guidance control signal triggered by the vehicle to be tested is detected, a third communication message is sent to the vehicle to be tested, and the third communication message can be composed of a first indication information and a second indication information, the first indication information is used to indicate that the charging and discharging unit is in the energy transmission stage, and the second indication information is used to indicate that the charging and discharging unit has not received a shutdown request. Therefore, the present application can set the preset parameters before executing the charging and discharging test, or before realizing the energy transmission, to ensure the stability and safety of the charging and discharging test system during the charging and discharging test of the vehicle to be tested.

[0114] Optionally, in a possible implementation example, the first communication message may further include: a maximum charging current MaxChgCurrent. The maximum charging current MaxChgCurrent belongs to the message H102 of the vehicle to be tested.

[0115] In a possible implementation, the above method may include determining that the vehicle to be tested executes a corresponding test process according to the charge and discharge indication information:

[0116] According to the target charging and discharging standard, based on the maximum charging current, the charging and discharging unit is controlled to perform a charging test on the vehicle to be tested.

[0117] In one possible implementation, when performing a charging test, first close contactor K1 and contactor K2 on DC+ and DC- in the charging and discharging unit 120, then set the energy conversion circuit to DC source mode, and then control the charging and discharging unit to perform a charging test on the vehicle to be tested based on the target charging and discharging standard and the maximum charging current MaxChgCurrent of the vehicle to be tested, wherein PresentChargingCurrent in the charging and discharging system message H109 is filled with the charging current of the current charging process, which is a positive value.

[0118] In the Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application, the first communication message may also be composed of the maximum charging current; according to the target charging and discharging standard, based on the maximum charging current, the charging and discharging unit is controlled to perform a charging test on the vehicle to be tested. Thus, the present application can implement a charging test on the vehicle to be tested, and improve the reliability of the charging and discharging test system.

[0119] Optionally, in a possible implementation embodiment, in the above method, determining that the vehicle to be tested executes a corresponding test process according to the charge and discharge indication information may include:

[0120] According to the target charge and discharge standard, the charge and discharge unit is controlled to perform a discharge test on the vehicle to be tested at a preset voltage lower than the target battery voltage of the vehicle to be tested and using a preset discharge current.

[0121] In one possible implementation, when performing a discharge test, on the basis of closing the contactors K1 and K2 on DC+ and DC- in the charge-discharge unit 120, the energy conversion circuit 121 is set to load mode, and the bypass contactor Kd is closed at the same time, the diode D1 is bypassed, and the voltage of the energy conversion circuit 121 in the charge-discharge unit is turned on to a preset voltage lower than the target battery voltage of the vehicle to be tested, and the vehicle to be tested is discharged according to the preset discharge current set by the user according to the target charge-discharge standard, and the target battery voltage of the vehicle to be tested is fed back to the preset power grid through the energy conversion circuit 121. Among them, the discharge current of the current discharge process can be filled in by PresentDisChargingCurrent in the charge-discharge test system message H208, and the discharge current is a negative value.

[0122] The preset voltage and the preset discharge current can be selected according to actual conditions. For example, the preset voltage can be selected to be 20V.

[0123] The Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application controls the charging and discharging unit to perform a discharge test on the vehicle to be tested at a preset voltage lower than the target battery voltage of the vehicle to be tested, and adopts a preset discharge current according to the target charging and discharging standard. As a result, the present application can realize the discharge test of the vehicle to be tested, and improve the reliability of the charging and discharging test system. At the same time, the charging and discharging test system provided by the present application can help the vehicle to perform charging and discharging verification of various working conditions during the research and development stage, realize the vehicle's rapid discharge function, solve the pain points of enterprises, and improve the compatibility of vehicles with the Japanese standard charging and discharging test systems on the market.

[0124] Optionally, in a possible implementation example, the method may further include:

[0125] According to the fourth communication message of the vehicle to be tested, an abnormal condition in the charging and discharging test process of the vehicle to be tested is detected.

[0126] The fourth communication message may include: charging and discharging process fault information.

[0127] In one possible implementation, when the fourth communication message of the vehicle under test (such as charging and discharging process fault information) is received, the charging and discharging test system protection is triggered, the charging and discharging test system starts the shutdown process, turns off the charging and discharging unit, and ends the charging and discharging test process. The control unit detects abnormal conditions in the charging and discharging test process of the vehicle under test.

[0128] Among them, the charge and discharge process fault information mainly detects the guidance circuit and all messages in the charge and discharge process. Among them, the guidance circuit may include: switch S1, and / or guidance switch S2, and / or guidance control signal VCP, and / or CPD signal, and / or PE disconnection. Message detection may include: detecting the presence of battery overvoltage (Batteryovervoltage) state, and / or battery undervoltage (Batteryundervoltage) state, and / or battery overcurrent (Batteryovercurrent) state, and / or charge / discharge system faults (Charge / discharge systemfaults) state, and / or vehicle shift fault (Vehicleshiftposition) state, and / or battery overtemperature (Highbatterytemperature) state in the vehicle message to be tested.

[0129] It should be noted that the charge and discharge process fault information listed in the above embodiment cannot be understood as a limitation of the present application. For example, the charge and discharge process fault information listed in the above embodiment may also include fault detection and shutdown detection. In addition, it should be noted that the charge and discharge process fault information in the fourth communication message may belong to H102 in the vehicle message to be tested.

[0130] The Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application detects abnormal conditions in the charging and discharging test process of the vehicle to be tested according to the fourth communication message of the vehicle to be tested; wherein the fourth communication message can be composed of charging and discharging process fault information. Therefore, the present application can perform guidance circuit, message, fault and shutdown detection in the charging and discharging test system during the charging and discharging test process, thereby improving the safety, reliability and perfect protection mechanism of the charging and discharging test system, ensuring the safety of testers, detection equipment and the vehicle to be tested; at the same time, considering the comprehensiveness of the test, fault detection can be configured.

[0131] To facilitate understanding of the above-mentioned Japanese standard electric vehicle charging and discharging test method, the present application embodiment also provides an example of the process of a Japanese standard electric vehicle charging and discharging test method, which is described below in conjunction with the accompanying drawings. Figure 4 A schematic diagram of a Japanese standard electric vehicle charging and discharging test method provided in an embodiment of the present application Figure 3 .like Figure 4 As shown, the schematic diagram provided by the embodiment of the present application Figure 3 This may include:

[0132] S401, start the charge and discharge test process.

[0133] Specifically, the switch S1 in the charge and discharge unit 120 is closed, and the vehicle to be tested starts to send all messages of the vehicle to be tested according to a preset period (such as 100ms). For example, the vehicle message may include H100, H101, H102, H200, H201, etc.

[0134] S402: Receive a first communication message sent by the vehicle to be tested, and perform a charge-discharge compatibility test on the charge-discharge unit and the vehicle to be tested.

[0135] Specifically, the charge and discharge test system receives a first communication message sent by the vehicle to be tested, such as the target battery voltage Target Battery Voltage, the charge and discharge indication information Vehicle Dischg CompatibilityFlag, and the charge and discharge version information CHAdeMO control protocol number. Then, according to whether the target battery voltage Target BatteryVoltage is within the preset output voltage range of the charge and discharge unit, the charge and discharge compatibility detection is performed on the charge and discharge unit and the vehicle to be tested. That is, if the target battery voltage Target Battery Voltage is greater than the charge and discharge threshold voltage or less than the minimum output voltage of the charge and discharge threshold voltage, it is determined that the charge and discharge unit is incompatible with the vehicle to be tested, that is, the charge and discharge compatibility detection of the charge and discharge unit fails, and the control unit controls the vehicle to be tested to exit the subsequent charge and discharge test process; if the target battery voltage Target Battery Voltage is less than or equal to the charge and discharge threshold voltage or greater than or equal to the minimum output voltage of the charge and discharge threshold voltage, it is determined that the charge and discharge unit is compatible with the vehicle to be tested, that is, the charge and discharge compatibility detection of the charge and discharge unit passes, and the control unit controls the vehicle to be tested to perform the subsequent charge and discharge test process.

[0136] S403: If the charge-discharge compatibility test passes, determine a target charge-discharge standard that matches the vehicle to be tested according to the charge-discharge version information.

[0137] Specifically, if the charge and discharge compatibility test passes, the target charge and discharge standard matching the vehicle to be tested selects a charging and discharging version that matches it from the charging and discharging version information in the charging and discharging test system, and then determines the target charge and discharge standard matching the vehicle to be tested based on the charging and discharging version.

[0138] S404, setting parameters in the charge and discharge test system.

[0139] Specifically, after the compatibility test between the vehicle to be tested and the charging and discharging unit is passed, the available output current of the charging and discharging unit is obtained by dividing the rated power of the charging and discharging unit by the charging and discharging threshold voltage. Then, according to the available output current, the current battery capacity, the maximum charging time MaxChgingTime10s and the second maximum charging time MaxChgingTime1Min are set, that is, the charging and discharging test system can make an estimate based on the current battery capacity and the available output current. If the charging time is in units of 10s, the second maximum charging time MaxChgingTime1Min is set to 0x00; if the charging time is in units of 1min, the maximum charging time MaxChgingTime10s is set to 0xFF. By converting the set maximum charging time MaxChgingTime10s into units of min, and setting the parameter to the initial value of the remaining charging time of the charging and discharging unit, the remaining charging time of the charging and discharging unit is reduced in real time during the charging process. And the set information is sent to the vehicle to be tested as a second communication message. The second communication message includes: the target maximum charging time and the remaining charging time.

[0140] S405: Receive the guidance control signal, and send a third communication message to the vehicle to be tested.

[0141] The third communication message may include: first indication information EVPSStatus=1 and second indication information Chg OrDischg StopControl=0.

[0142] Specifically, if the vehicle to be tested meets the charging and discharging requirements of the vehicle to be tested after receiving the message (such as H108, H109, ​​H208, H209) from the charging and discharging test system, the vehicle to be tested will close the guide control signal VCP to notify the charging and discharging test system to allow charging and discharging. At this time, the charging and discharging test system closes the guide switch S2, so that the charging and discharging contactors (such as K5 and K6) in the vehicle to be tested are closed, indicating that the vehicle to be tested is ready for charging and discharging, thereby laying the foundation for realizing the charging and discharging test process between the vehicle to be tested and the charging and discharging test system. At this time, the third communication message in the charging and discharging test system can be set, such as the first indication information EVPSStatus=1, the second indication information Chg Or Dischg StopControl=0, to indicate that the charging and discharging test system has entered the energy transmission stage and there is no shutdown request.

[0143] S406: Determine the corresponding test process for the vehicle to be tested according to the charge and discharge indication information.

[0144] Specifically, after determining the target charge and discharge standard matched by the vehicle to be tested, the control unit can perform the corresponding charge and discharge test according to the target charge and discharge standard matched by the vehicle to be tested and the charge and discharge indication information Vehicle Dischg CompatibilityFlag. That is, if the charge and discharge indication information Vehicle Dischg CompatibilityFlag is 1, it means that the vehicle to be tested performs the discharge process; if the charge and discharge indication information Vehicle Dischg CompatibilityFlag is 0, it means that the vehicle to be tested performs the charging process.

[0145] When executing the charging process, when performing the charging test, first close the contactors K1 and K2 on DC+ and DC- in the charging and discharging unit 120, then set the energy conversion circuit 121 to the DC source mode, and then according to the target charging and discharging standard, based on the maximum charging current MaxChgCurrent of the vehicle to be tested, control the PresentChargingCurrent in the charging and discharging test system message H109, ​​and control the charging and discharging unit to perform a charging test on the vehicle to be tested.

[0146] When performing a discharge test, on the basis of closing the contactors K1 and K2 on DC+ and DC- in the charge and discharge unit 120, the energy conversion circuit 121 is set to load mode, and the bypass contactor Kd is closed at the same time to bypass the diode D1, and then the voltage of the energy conversion circuit 121 in the charge and discharge unit is turned on to a preset voltage (such as 20V) lower than the target battery voltage of the vehicle to be tested, and then the vehicle to be tested is discharged according to the preset discharge current set by the user according to the target charge and discharge standard, and the target battery voltage of the vehicle to be tested is fed back to the preset power grid through the energy conversion circuit 121.

[0147] It should be noted that if during the charge and discharge test process, the control unit receives the fourth communication message from the vehicle to be tested, the charge and discharge test system protection is triggered, the charge and discharge test system starts the shutdown process, turns off the charge and discharge unit, and ends the charge and discharge test process. The control unit detects abnormal conditions in the charge and discharge test process of the vehicle to be tested.

[0148] The Japanese standard electric vehicle charging and discharging test method provided in the embodiment of the present application starts the charging and discharging test process, receives the first communication message sent by the vehicle to be tested, and performs charging and discharging compatibility detection on the charging and discharging unit and the vehicle to be tested; if the charging and discharging compatibility detection passes, the target charging and discharging standard matching the vehicle to be tested is determined according to the charging and discharging version information; the parameters in the charging and discharging test system are set; the guidance control signal is received, and the third communication message is sent to the vehicle to be tested; according to the charging and discharging indication information, it is determined that the vehicle to be tested executes the corresponding test process. Therefore, the present application helps the vehicle to perform charging and discharging verification of various working conditions during the research and development stage, realizes the rapid discharge function of the vehicle to be tested, solves the pain points of the enterprise, and improves the compatibility of the vehicle to be tested and the Japanese standard charging and discharging test system on the market. Supports different versions of Japanese standard charging and discharging functions. The charge and discharge test system can automatically select the corresponding charging version to reply to the message according to the version information currently supported by the vehicle to be tested, and then execute the corresponding charge and discharge test process. At the same time, the charge and discharge test system has strong openness, supports user secondary development, and is compatible with different models of power supplies and loads; the charge and discharge test system can also display various status information in real time in a graphical manner, and record the information of each channel in a timing diagram, log, etc., to facilitate tracking of the entire process. At the same time, the charge and discharge test system provided by this application has a complete protection mechanism to ensure the safety of testers, testing equipment and vehicles to be tested; at the same time, the test is comprehensive and sufficient, and fault detection is configurable. That is, based on the safety of the charge and discharge test system, this application can effectively solve the problems of low system development, long discharge time, incomplete data, and low safety in the charging and discharging process of existing electric vehicles.

[0149] Based on the same inventive concept, a Japanese standard electric vehicle charging and discharging test device is also provided in the embodiment of the present application. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the above-mentioned Japanese standard electric vehicle charging and discharging test method in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0150] Figure 5 This is a schematic diagram of the structure of a Japanese standard electric vehicle charging and discharging test device provided in an embodiment of the present application. Figure 5 As shown, a control unit applied to a charge and discharge test system, the charge and discharge test system also includes: a charge and discharge unit, the charge and discharge unit is connected to the charging interface of the vehicle to be tested through a charging gun; the Japanese standard electric vehicle charge and discharge test device 50 may include:

[0151] The receiving module 51 is used to receive a first communication message sent by the vehicle to be tested, wherein the first communication message includes: a target battery voltage, charge and discharge indication information, and charge and discharge version information;

[0152] A detection module 52, used to perform a charge-discharge compatibility test on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charge-discharge unit;

[0153] A first determination module 53 is used to determine a target charge and discharge standard matching the vehicle to be tested according to the charge and discharge version information if the charge and discharge compatibility test passes;

[0154] The second determination module 54 is used to determine the corresponding test process to be executed by the vehicle to be tested according to the charge and discharge indication information.

[0155] In an optional embodiment, the preset output voltage includes: the charge and discharge threshold voltage and the minimum output voltage of the charge and discharge unit; the detection module 52 is specifically used to: if the target battery voltage is not within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, determine that the charge and discharge compatibility test fails; if the target battery voltage is within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, determine that the charge and discharge compatibility test passes.

[0156] In an optional embodiment, the first communication message also includes: the set maximum charging time of the vehicle to be tested, the second maximum charging time and the current battery capacity of the vehicle to be tested; the second determination module 54 is also used to: calculate the available output current of the charging and discharging unit according to the rated power and the charging and discharging threshold voltage of the charging and discharging unit; set the target maximum charging time and the remaining charging time of the charging and discharging unit according to the available output current, the current battery capacity, the set maximum charging time and the second maximum charging time; send a second communication message to the vehicle to be tested, the second communication message including: the target maximum charging time and the remaining charging time.

[0157] In an optional implementation, the first communication message also includes: the maximum battery voltage of the vehicle to be tested; the detection module 52 is further used to: set the charge and discharge threshold voltage to the minimum value between the maximum battery voltage and the preset available output voltage of the charge and discharge unit.

[0158] In an optional embodiment, the Japanese standard electric vehicle charging and discharging test device 50 is also used to: if a guidance control signal triggered by the vehicle to be tested is detected, control the charging and discharging unit to transfer energy with the vehicle to be tested, wherein the guidance control signal is: the guidance control signal triggered after the vehicle to be tested determines that the target maximum charging time and the remaining charging time meet the preset vehicle requirements.

[0159] In an optional embodiment, the Japanese standard electric vehicle charging and discharging test device 50 is also used to: if a guidance control signal triggered by the vehicle to be tested is detected, send a third communication message to the vehicle to be tested, and the third communication message includes: first indication information and second indication information, the first indication information is used to indicate that the charging and discharging unit is in the energy transmission stage, and the second indication information is used to indicate that the charging and discharging unit has not received a shutdown request.

[0160] In an optional implementation, the first communication message further includes: a maximum charging current; and a second determination module 54, specifically configured to: control the charging test of the vehicle to be tested by the charging and discharging unit according to the target charging and discharging standard and based on the maximum charging current.

[0161] In an optional implementation, the second determination module 54 is specifically configured to: according to the target charge and discharge standard, control the charge and discharge unit to perform a discharge test on the vehicle to be tested at a preset voltage lower than the target battery voltage of the vehicle to be tested and using a preset discharge current.

[0162] In an optional implementation, the Japanese standard electric vehicle charging and discharging test device 50 is further used to: detect abnormal conditions in the charging and discharging test process of the vehicle to be tested according to the fourth communication message of the vehicle to be tested; wherein the fourth communication message includes: charging and discharging process fault information.

[0163] It should be noted that for details not disclosed in the Japanese standard electric vehicle charging and discharging test device in the embodiment of the present application, please refer to the details disclosed in the Japanese standard electric vehicle charging and discharging test method in the embodiment of the present application, and the details will not be repeated here.

[0164] The above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more microprocessors, or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0165] Optionally, an embodiment of the present application also provides a control unit. Figure 6 This is a schematic diagram of the structure of a control unit provided in an embodiment of the present application. Figure 6As shown, the control unit 110 may include: a processor 111 and a memory 112 .

[0166] The memory 112 stores machine executable instructions that can be executed by the processor 111, that is, when the charge and discharge test system 100 is running, the above machine readable instructions are executed, and the processor 111 communicates with the memory 112 via a bus. The processor 111 can execute the machine executable instructions to implement the Japanese standard electric vehicle charge and discharge test method.

[0167] Among them, the memory 112, the processor 111 and the bus components are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The mobile storage device includes at least one software function module that can be stored in the memory 112 in the form of software or firmware or solidified in the operating system (OS) of the electronic device. The processor 111 is used to execute the executable modules stored in the memory 112, such as the software function modules and computer programs included in the Japanese standard electric vehicle charging and discharging test method of the mobile storage medium.

[0168] Among them, the memory 112 can be, but is not limited to, random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), programmable read-only memory (Programmable Read-Only Memory, PROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable read-only memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc.

[0169] Optionally, the embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the processor executes the steps of the Japanese standard electric vehicle charging and discharging test method for the mobile storage medium in the above embodiment. The specific implementation method and technical effect are similar and will not be repeated here.

[0170] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0171] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0172] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0173] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, abbreviated: ROM), random access memory (English: Random Access Memory, abbreviated: RAM), disk or optical disk and other media that can store program codes.

[0174] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A Japanese standard electric vehicle charging and discharging test method, characterized in that: A control unit applied to a charge and discharge test system, the charge and discharge test system further comprising: a charge and discharge unit, the charge and discharge unit being connected to a charging interface of a vehicle to be tested via a charging gun; the method comprising: Receiving a first communication message sent by the vehicle to be tested, wherein the first communication message includes: a target battery voltage, charge and discharge indication information, and charge and discharge version information; Performing a charge-discharge compatibility test on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and a preset output voltage of the charge-discharge unit; If the charge-discharge compatibility test passes, determining a target charge-discharge standard that matches the vehicle to be tested according to the charge-discharge version information; According to the charge and discharge indication information, it is determined that the vehicle to be tested executes a corresponding test process.

2. The Japanese standard electric vehicle charging and discharging test method according to claim 1, characterized in that: The preset output voltage includes: the charge and discharge threshold voltage and the minimum output voltage of the charge and discharge unit; The step of performing charge-discharge compatibility detection on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charge-discharge unit includes: If the target battery voltage is not within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, determining that the charge and discharge compatibility test fails; If the target battery voltage is within the voltage range from the charge and discharge threshold voltage to the minimum output voltage, it is determined that the charge and discharge compatibility test has passed.

3. The Japanese standard electric vehicle charging and discharging test method according to claim 2 is characterized in that: The first communication message also includes: the set maximum charging time of the vehicle to be tested, the second maximum charging time and the current battery capacity of the vehicle to be tested; Before determining, according to the charge and discharge indication information, that the vehicle to be tested executes a corresponding test process, the method further includes: Calculating the available output current of the charge-discharge unit according to the rated power of the charge-discharge unit and the charge-discharge threshold voltage; According to the available output current, the current battery capacity, the set maximum charging time and the second maximum charging time, setting the target maximum charging time and the remaining charging time of the charging and discharging unit; A second communication message is sent to the vehicle to be tested, wherein the second communication message includes: the target maximum charging time and the remaining charging time.

4. The Japanese standard electric vehicle charging and discharging test method according to claim 2, characterized in that: The first communication message also includes: the maximum battery voltage of the vehicle to be tested; Before performing charge-discharge compatibility detection on the charge-discharge unit and the vehicle to be tested according to the target battery voltage and the preset output voltage of the charge-discharge unit, the method further includes: The charge and discharge threshold voltage is set to a minimum value between the maximum battery voltage and a preset available output voltage of the charge and discharge unit.

5. The Japanese standard electric vehicle charging and discharging test method according to claim 3 is characterized in that: The method further comprises: If a guidance control signal triggered by the vehicle under test is detected, it means that the vehicle under test is allowed to perform the test process, wherein the guidance control signal is: a guidance control signal triggered after the vehicle under test determines that the target maximum charging time and the remaining charging time meet the preset vehicle requirements.

6. The Japanese standard electric vehicle charging and discharging test method according to claim 5, characterized in that: The method further comprises: If a guidance control signal triggered by the vehicle under test is detected, a third communication message is sent to the vehicle under test, and the third communication message includes: first indication information and second indication information, the first indication information is used to indicate that the charging and discharging unit is in the energy transmission stage, and the second indication information is used to indicate that the charging and discharging unit has not received a shutdown request.

7. The Japanese standard electric vehicle charging and discharging test method according to claim 1, characterized in that: The first communication message also includes: maximum charging current; The step of determining, according to the charge and discharge indication information, that the vehicle to be tested executes a corresponding test process comprises: According to the target charging and discharging standard and based on the maximum charging current, the charging and discharging unit is controlled to perform a charging test on the vehicle to be tested.

8. The Japanese standard electric vehicle charging and discharging test method according to claim 1, characterized in that: The step of determining, according to the charge and discharge indication information, that the vehicle to be tested executes a corresponding test process comprises: According to the target charge and discharge standard, the charge and discharge unit is controlled to perform a discharge test on the vehicle to be tested at a preset voltage lower than the target battery voltage of the vehicle to be tested and using a preset discharge current.

9. The Japanese standard electric vehicle charging and discharging test method according to claim 1, characterized in that: The method further comprises: Detecting an abnormal condition in a charging and discharging test process of the vehicle under test according to a fourth communication message of the vehicle under test; Among them, the fourth communication message includes: charging and discharging process fault information.

10. A charge and discharge test system, characterized in that: The charging and discharging test system comprises: a control unit, a charging and discharging unit and a communication unit, wherein the charging and discharging unit comprises: an energy conversion circuit and a guidance circuit, and the energy conversion circuit, the guidance circuit and the communication unit in the charging and discharging unit are also connected to the charging interface of the vehicle to be tested through a charging gun; The control unit is also connected to the energy conversion circuit, the steering circuit and the communication unit, and the control unit is used to execute the method described in any one of claims 1-9.

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