A charging test system and charging pile

Abstract

The application provides a charging test system and a charging pile, and relates to the technical field of charging. The charging test system comprises a charging power supply, a parameter configuration module and a control module. The control module is connected with the charging power supply and a vehicle. The control module is used for adjusting the output parameter of the charging power supply according to the charging information of the vehicle. The parameter configuration module is connected with the control module and is used for setting and adjusting the output range of the charging power supply through the control module. The output range comprises at least one of a charging voltage interval and a charging current interval. The charging test system provided by the application is used for testing the charging system of the vehicle and can reduce the cost of charging test.

Description

Technical Field

[0001] This application relates to the field of charging technology, and in particular to a charging test system and a charging pile. Background Technology

[0002] During the vehicle development phase, the vehicle's charging system needs to be tested. During the testing process, the charging station needs to be connected to the vehicle, and it needs to be checked whether the charging station can charge the vehicle normally.

[0003] In related technologies, in order to ensure that the finished vehicle can be well matched with various charging piles, the charging test phase requires the vehicle to be connected to various charging piles to test whether each charging pile can charge the vehicle normally, which results in high charging test costs. Utility Model Content

[0004] This application provides a charging test system and a charging pile, which can reduce the cost of charging test.

[0005] Firstly, this application provides a charging test system, including a charging power supply, a parameter configuration module, and a control module. The control module is connected to the charging power supply and a vehicle, and is used to adjust the output parameters of the charging power supply according to the vehicle's charging information. The parameter configuration module is connected to the control module and is used to set and adjust the output range of the charging power supply via the control module. The output range includes at least one of a charging voltage range and a charging current range.

[0006] The charging test system provided in this application has a parameter configuration module that can set and adjust the output range of the charging power supply. The output range includes at least one of a charging voltage range and a charging current range, allowing the charging test system to simulate different types of charging piles. Different types of charging piles have different charging voltage ranges and / or charging current ranges. The charging test system in this application has at least one adjustable charging voltage range and charging current range, enabling the charging test system to simulate different types of charging piles for vehicle testing. This reduces the number of charging piles required during the charging test and eliminates the need for switching between various charging piles, thus lowering the cost of the charging test. Therefore, the charging test system provided in this application can reduce the cost of charging testing.

[0007] Furthermore, in the charging test system provided in this application, the parameter configuration module is connected to the control module. The parameter configuration module sets and adjusts the output range through the control module. In other words, the output information of the parameter configuration module is transmitted to the charging power supply through the control module. This makes it easier to adjust the output range. The control module is not only used to interact with the vehicle, but also to receive the output information of the parameter configuration module. The control module is fully utilized, which is conducive to improving the integration of the system.

[0008] In conjunction with the first aspect, in some possible implementations, the control module includes a communication interaction unit and a power control unit. The communication interaction unit is connected to the vehicle and the parameter configuration module, and is used to receive charging information; the power control unit is connected to the charging power supply and the communication interaction unit, and receives the charging information sent by the communication interaction unit, and adjusts the output parameters of the charging power supply based on the charging information.

[0009] By including a communication interaction unit and a power control unit in the control module—the communication interaction unit receiving charging information and the power control unit adjusting the output parameters of the charging power supply—the part of the control module that controls the output parameters of the charging power supply is separated from the part that communicates with the vehicle. This helps reduce interference from the high voltage of the charging power supply to the communication interaction unit and also reduces interference from communication information between the communication interaction unit and the vehicle on the control of the charging power supply, thus improving the reliability of communication and the reliability of the charging power supply control. Furthermore, by connecting the communication interaction unit to the parameter configuration module, on the one hand, the output information of the parameter configuration module can be transmitted to the power control unit through the communication interaction unit, allowing the power control unit to control the output range based on the output information of the parameter configuration module. This facilitates the adjustment of the output range. On the other hand, the output information of the parameter configuration module can also be transmitted to the vehicle through the communication interaction unit, enabling the vehicle to send charging information to the communication interaction unit based on this information, thereby initiating charging.

[0010] In conjunction with the first aspect and the above implementation methods, in some possible implementations, the charging test system further includes a fault injection module. The fault injection module is connected to the control module and is used to inject preset fault types into the control module. The preset fault types include at least one of message timeout fault, message type fault, message interruption fault, and insulation fault.

[0011] By setting up a fault injection module, which injects preset fault types into the control module, the vehicle's responsiveness and safety in the event of a charging pile malfunction can be assessed. Based on the assessment results, personnel can improve the safety of the vehicle's charging system.

[0012] In conjunction with the first aspect and the above-described implementation methods, in some possible implementations, the charging test system further includes a low-voltage power supply, a charging gun, a first switch module, and an operation module. The charging gun includes a low-voltage interface; the first switch module is connected in series between the low-voltage interface and the low-voltage power supply, and the controlled end of the first switch module is connected to the control module; the operation module is connected to the control module and is used to control the on / off state of the first switch module via the control module.

[0013] In this way, personnel can control the connection between the low-voltage interface and the low-voltage power supply through the operation module, thereby controlling the connection between the low-voltage power supply and the vehicle. This can simulate the plugging and unplugging of the charging gun, so that personnel do not need to plug and unplug the charging gun on the vehicle to control the connection between the low-voltage power supply and the vehicle, which is beneficial to improving the convenience of testing when multiple charging is required.

[0014] Combining the first aspect and the above implementation methods, in some possible implementations, the low-voltage interface includes at least a low-voltage power output interface and a charging connection confirmation interface, and the first switch module includes at least a first switch unit and a second switch unit. The first switch unit is connected in series between the low-voltage power output interface and the low-voltage power supply, and the second switch unit is connected in series between the charging connection confirmation interface and the low-voltage power supply. The control module is connected to the controlled terminals of the first switch unit and the second switch unit. The charging test system also includes a fault injection module, which includes a charging gun abnormal disconnection unit connected to the control module. The charging gun abnormal disconnection unit is used to adjust the conduction state of the first switch unit and the second switch unit via the control module.

[0015] By adjusting the conduction states of the first and second switch units via the control module, the abnormal disconnection unit of the charging gun can be configured to accept fault types such as abnormal disconnection between the low-voltage power output interface and the vehicle, as well as abnormal disconnection between the charging connection confirmation interface and the vehicle. This allows personnel to assess the vehicle's responsiveness and safety in the face of these fault types, thereby improving the safety of the vehicle's charging system.

[0016] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the control module further includes a hard-wired interaction unit. The hard-wired interaction unit is connected to the operation module, the charging gun abnormal disconnection unit, and the first switch module. The operation module is used to control the on / off state of the first switch module via the hard-wired interaction unit, and the charging gun abnormal disconnection unit is used to adjust the conduction state of the first switch unit and the second switch unit via the hard-wired interaction unit.

[0017] By including a hardwired interaction unit in the control module, the operation module controls the first switch module via the hardwired interaction unit, and the charging gun abnormal disconnection unit adjusts the first and second switch units via the hardwired interaction unit. In other words, the part of the control module used to control the first switch module is separated from the communication interaction unit and the power control unit. This helps reduce interference from communication information between the communication interaction unit and the vehicle, as well as from the high voltage of the charging power supply, to the first switch module. Furthermore, the control of the first switch module requires rapid response; setting up a separate hardwired interaction unit to control the first switch module helps meet this requirement.

[0018] In conjunction with the first aspect and the above implementation methods, in some possible implementations, the charging gun further includes a high-voltage interface, and the charging test system further includes a second switch module. The second switch module is connected in series between the high-voltage interface and the charging power supply. The controlled terminal of the second switch module is connected to the hard-wired interaction unit, and the operation module is used to control the disconnection of the second switch module via the hard-wired interaction unit.

[0019] In this way, the hard-wired interaction unit can not only control the on / off state of the first switching module, but also control the off state of the second switching module. The hard-wired interaction unit is fully utilized, which helps improve the integration of the control module. Controlling the second switching module to disconnect via the hard-wired interaction unit can realize the charging emergency stop function, and can also be used to simulate abnormal disconnection faults of the charging gun. This allows personnel to assess the vehicle's response capability and safety in the face of abnormal charging gun fault types, enabling them to improve the safety of the vehicle's charging system based on the assessment results.

[0020] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the charging test system further includes a display module. The display module is connected to the control module and is used to display monitoring information based on the information output from the control module. The monitoring information includes at least one of the following: charging status jump information, preset voltage and current information, actual voltage and current information, and cabinet operation status information.

[0021] By displaying monitoring information based on the output from the control module, the display module enables personnel to assess the compatibility between the vehicle and the current charging test system, thus facilitating the testing of the vehicle charging system. Furthermore, personnel can adjust the charging test system based on the monitoring information, which helps reduce the occurrence of hazards and facilitates system improvements.

[0022] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the charging test system further includes a sensor. The sensor is connected to the charging power supply, the display module, and the control module. The sensor is used to detect the output voltage of the charging power supply and output it to the display module and the control module. The control module is also used to adjust the output parameters of the charging power supply according to the output voltage.

[0023] By having the sensor detect the output voltage of the charging power supply and output it to the display module, personnel can monitor the output voltage information accurately and promptly. By connecting the sensor to the control module, the sensor not only monitors information but also sends output voltage information to the control module, enabling the control module to adjust charging parameters more accurately. In this way, the sensor is fully utilized, resulting in a high degree of system integration.

[0024] Secondly, this application provides a charging pile, which includes the charging test system provided in the first aspect and the above implementation.

[0025] The charging pile provided in this application, including the charging test system provided in the first aspect of this application, can achieve the same technical effect, namely, it can reduce the cost of charging test. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the composition of a charging test system in some embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the composition of a charging test system in some other embodiments of this application;

[0029] Figure 3 This is a flowchart illustrating the operation method of the charging test system in some embodiments of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 01. Vehicle; 11. Charging Power Supply; 12. Parameter Configuration Module; 121. Maximum Voltage Configuration Unit; 122. Maximum Current Configuration Unit; 123. Minimum Voltage Configuration Unit; 124. Minimum Current Configuration Unit; 13. Control Module; 131. Communication Interaction Unit; 132. Power Control Unit; 133. Hardwire Interaction Unit; 134. Sensor Control Unit; 14. First Control Local Area Network Module; 15. Second Control Local Area Network Module; 16. Fault Injection Module; 161. Message Timeout Fault Unit; 162. Message Type Fault Unit; 163. Message Interruption Fault Unit; 164. Insulation Fault Unit ;165. Charging gun abnormal disconnection unit; 17. Charging gun; 171. A+ interface; 172. A- interface; 173. First charging connection confirmation interface; 174. Second charging connection confirmation interface; 175. Positive high voltage interface; 176. Negative high voltage interface; 18. Operation module; 181. Power start unit; 182. Charging gun connection unit; 183. Card swiping unit; 184. Emergency stop unit; 19. Display module; 191. Charging status jump unit; 192. Preset voltage and current unit; 193. Actual voltage and current unit; 194. Cabinet operation status unit; 20. Sensor; 21. Conversion module. Detailed Implementation

[0032] The technical solutions in this application will now be described clearly and in detail with reference to the accompanying drawings.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0036] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0037] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0038] This application provides a charging pile, which can be a DC charging pile, an AC charging pile, or a DC / AC dual-purpose charging pile, etc.

[0039] Please refer to Figure 1The charging pile provided in this application embodiment includes a charging pile charging test system. The charging test system includes a charging power supply 11, a parameter configuration module 12, and a control module 13. The control module 13 is connected to the charging power supply 11 and the vehicle 01. The control module 13 is used to adjust the output parameters of the charging power supply 11 according to the charging information of the vehicle 01. The parameter configuration module 12 is connected to the control module 13 and is used to set and adjust the output range of the charging power supply 11 via the control module 13. The output range includes at least one of a charging voltage range and a charging current range.

[0040] The charging test system provided in this application embodiment allows the parameter configuration module 12 to set and adjust the output range of the charging power supply 11. The output range includes at least one of a charging voltage range and a charging current range, enabling the charging test system to simulate different types of charging piles. Different types of charging piles have different charging voltage ranges and / or charging current ranges. The charging test system in this application embodiment is adjustable in at least one of the charging voltage and charging current ranges, allowing the charging test system to simulate different types of charging piles for testing the vehicle 01. This reduces the number of charging piles required during the charging test and eliminates the need for the vehicle 01 to switch connections between various charging piles, thus lowering the cost of the charging test. Therefore, the charging test system provided in this application embodiment can reduce the cost of charging tests.

[0041] Furthermore, in the charging test system provided in this application embodiment, the parameter configuration module 12 is connected to the control module 13. The parameter configuration module 12 sets and adjusts the output range through the control module 13, and the output information of the parameter configuration module 12 is transmitted to the charging power supply 11 through the control module 13. This makes it relatively convenient to adjust the output range. The control module 13 is not only used to interact with the vehicle 01, but also to receive the output information of the parameter configuration module 12. The control module 13 is fully utilized, which is beneficial to improving the integration of the system.

[0042] It should be explained that, in this embodiment, the output range refers to the range of output parameters, which can be at least one of the charging voltage and charging current of the charging power supply 11. After the output range is set by the parameter configuration module 12, the control module 13 can adjust the output parameters of the charging power supply 11 in real time according to the charging information of the vehicle 01 within the output range to charge the vehicle 01. During the adjustment process, the output parameters are limited to the output range, and the charging power supply 11 outputs based on the output parameters selected by the control module 12 within the output range.

[0043] Please refer to Figure 2In some embodiments of this application, the parameter configuration module 12 may include a maximum voltage configuration unit 121 and a minimum voltage configuration unit 123, or a maximum current configuration unit 122 and a minimum current configuration unit 124. The maximum voltage configuration unit 121 is used to set the maximum charging voltage of the charging power supply 11, and the minimum voltage configuration unit 123 is used to set the minimum charging voltage of the charging power supply 11. The maximum voltage configuration unit 121 and the minimum voltage configuration unit 123 can define the charging voltage range of the charging power supply 11. The maximum current configuration unit 122 is used to set the maximum charging voltage of the charging power supply 11, and the minimum current configuration unit 124 is used to set the maximum charging voltage of the charging power supply 11. The maximum current configuration unit 122 and the minimum current configuration unit 124 can define the charging current range of the charging power supply 11.

[0044] Please refer to Figure 2 In some embodiments of this application, the control module 13 includes a communication interaction unit 131 and a power control unit 132. The communication interaction unit 131 is connected to the vehicle 01 and the parameter configuration module 12, and is used to receive charging information. The power control unit 132 is connected to the charging power supply 11 and the communication interaction unit 131, and receives the charging information sent by the communication interaction unit 131, and adjusts the output parameters of the charging power supply 11 based on the charging information.

[0045] By including a communication interaction unit 131 and a power control unit 132 in the control module 13, where the communication interaction unit 131 receives charging information and the power control unit 132 adjusts the output parameters of the charging power supply 11, the part of the control module 13 used to control the output parameters of the charging power supply 11 is separated from the part used to communicate with the vehicle 01. This helps reduce the interference of the high voltage of the charging power supply 11 on the communication interaction unit 131 and also helps reduce the interference caused by the communication information between the communication interaction unit 131 and the vehicle 01 on the control of the charging power supply 11, thus improving the reliability of communication and the reliability of the control of the charging power supply 11. Furthermore, by connecting the communication interaction unit 131 to the parameter configuration module 12, on the one hand, the output information of the parameter configuration module 12 can be transmitted to the power control unit 132 through the communication interaction unit 131, allowing the power control unit 132 to control the output range based on the output information of the parameter configuration module 12. This facilitates the adjustment of the output range. On the other hand, the output information of the parameter configuration module 12 can be transmitted to the vehicle 01 through the communication interaction unit 131, enabling the vehicle 01 to send charging information to the communication interaction unit 131 based on this information, thereby initiating charging.

[0046] Please refer to Figure 2In some embodiments of this application, the charging test system further includes a first control area network (CAN) module. The first control area network module 14 is connected to the communication interaction unit 131 and is used to connect to the vehicle 01. The communication interaction unit 131 can communicate with the vehicle 01 through the first control area network module 14.

[0047] Please refer to Figure 2 In some embodiments of this application, the charging test system further includes a second control local area network module 15, which is connected to the power control unit 132 and the charging power supply 11. The power control unit 132 can adjust the output parameters of the charging power supply 11 through the second control local area network module 15.

[0048] Please refer to Figure 2 In some embodiments of this application, the communication interaction unit 131 is used not only to receive charging information from the vehicle 01, but also to send information to the vehicle 01 to provide feedback on the actual output parameters of the charging battery, etc.

[0049] Please refer to Figure 2 In some embodiments of this application, the power control unit 132 not only sends information to the charging power supply 11 to adjust the output parameters of the charging power supply 11, but also receives feedback information from the charging power supply 11 to obtain the actual output parameters of the charging power supply 11, etc.

[0050] Please refer to Figure 2 In some embodiments of this application, the communication interaction unit 131 is not only used to send information to the power control unit 132 so as to control the charging power supply 11 through the power control unit 132, but also used to receive feedback information from the power control unit 132 so as to obtain the actual output parameters of the charging power supply 11 through the power control unit 132.

[0051] Please refer to Figure 2 In some embodiments of this application, the charging test system further includes a fault injection module 16, which is connected to the control module 13. The fault injection module 16 is used to inject a preset fault type into the control module 13. The preset fault type includes at least one of message timeout fault, message type fault, message interruption fault, and insulation fault.

[0052] By setting up the fault injection module 16, the fault injection module 16 can inject preset fault types into the control module 13, which can evaluate the response capability and safety of vehicle 01 in the event of a fault in the charging pile. Based on the evaluation results, personnel can improve the safety of the charging system of vehicle 01.

[0053] Please refer to Figure 2In some embodiments of this application, a message timeout fault may refer to a message timeout fault between the communication interaction unit 131 and the vehicle 01, or a message timeout fault between the charging control unit and the charging power supply 11.

[0054] Please refer to Figure 2 In some embodiments of this application, a message type failure may refer to a timeout failure of a message between the communication interaction unit 131 and the vehicle 01, or a message type failure between the charging control unit and the charging power supply 11.

[0055] Please refer to Figure 2 In some embodiments of this application, a message interruption fault may refer to a timeout fault in the message between the communication interaction unit 131 and the vehicle 01, or a message interruption fault between the charging control unit and the charging power supply 11.

[0056] Please refer to Figure 2 In some embodiments of this application, the communication interaction unit 131 communicates with the vehicle 01 through the first control local area network module 14. The message interruption fault can refer to the control local area network bus (CAN BUS OFF) failure between the communication interaction unit 131 and the vehicle 01.

[0057] Please refer to Figure 2 In some embodiments of this application, the power control unit 132 communicates with the charging power supply 11 through the second control local area network module 15. The message interruption fault may refer to the failure of the control local area network bus between the communication interaction unit 131 and the vehicle 01 to be turned off.

[0058] Please refer to Figure 2 In some embodiments of this application, the fault injection module 16 includes at least one of a message timeout fault unit 161, a message type fault unit 162, a message interruption fault unit 163, and an insulation fault unit 164. The message timeout fault unit 161 is used to inject a message timeout fault, the message type fault unit 162 is used to inject a message type fault, the message interruption fault unit 163 is used to inject a message interruption fault, and the insulation fault unit 164 is used to inject an insulation fault.

[0059] Please refer to Figure 2 In some embodiments of this application, the charging test system further includes a low-voltage power supply, a charging gun 17, a first switch module, and an operation module 18. The charging gun 17 includes a low-voltage interface; the first switch module is connected in series between the low-voltage interface and the low-voltage power supply, and the controlled end of the first switch module is connected to the control module 13; the operation module 18 is connected to the control module 13 and is used to control the on / off state of the first switch module via the control module 13.

[0060] In this way, the operator can control the connection between the low-voltage interface and the low-voltage power supply through the operation module 18, thereby controlling the connection between the low-voltage power supply and the vehicle 01. This can simulate the plugging and unplugging of the charging gun 17, so that the operator does not need to plug and unplug the charging gun 17 on the vehicle 01 to control the connection between the low-voltage power supply and the vehicle 01, which is beneficial to improving the convenience of testing when multiple charging is required.

[0061] Please refer to Figure 2 In some embodiments of this application, the operation module 18 includes a charging gun connection unit 182, which controls the on / off state of the first switch module controlled by the control module 13. In some embodiments of this application, the operation module 18 also includes a power start unit 181, a card swiping unit 183, and an emergency stop unit 184. The power start unit 181 is connected to the power control unit 132 and controls the charging power supply 11 to start via the power control unit 132. The card swiping unit is connected to the communication interaction unit 131 and controls the communication interaction unit 131 to start, enabling the communication interaction unit 131 to communicate with the vehicle 01. The emergency stop unit 184 is connected to the hard-wired interaction unit 133 in the control module 13 and controls the second switch module to disconnect via the hard-wired interaction unit 133. The second switch module is connected in series between the high-voltage interface of the charging gun 17 and the charging power supply 11. When the charging gun 17 is plugged into the vehicle 01 and the second switch module is on, the high-voltage power supply charges the vehicle 01 via the high-voltage interface. When the second switch module is off, the connection between the high-voltage power supply and the vehicle 01 is disconnected.

[0062] Please refer to Figure 2 In some embodiments of this application, the low-voltage interface includes at least a low-voltage power output interface and a charging connection confirmation interface, and the first switch module includes at least a first switch unit and a second switch unit. The first switch unit is connected in series between the low-voltage power output interface and the low-voltage power supply, and the second switch unit is connected in series between the charging connection confirmation interface and the low-voltage power supply. The control module 13 is connected to the controlled terminals of the first switch unit and the second switch unit. The charging test system also includes a fault injection module 16, which includes a charging gun abnormal disconnection unit 165. The charging gun abnormal disconnection unit 165 is connected to the control module 13 and is used by the control module 13 to adjust the conduction state of the first switch unit and the second switch unit.

[0063] By adjusting the conduction states of the first and second switch units via the control module 13, the charging gun abnormal disconnection unit 165 can inject the fault types of abnormal disconnection between the low-voltage power output interface and vehicle 01, as well as the fault types of abnormal disconnection between the charging connection confirmation interface and vehicle 01. This allows personnel to assess the response capability and safety of vehicle 01 in the face of the above fault types, and improve the safety of the charging system of vehicle 01 by evaluating the results.

[0064] It should be explained that, in the embodiments of this application, the low-voltage power supply is used to wake up the battery management system (BMS) of vehicle 01 via the low-voltage power supply output interface, enabling the battery management system to communicate with the communication interaction module. In some embodiments of this application, the low-voltage power supply output interface includes an activation positive terminal (activation+, A+) interface and an activation negative terminal (activation-, A-) interface. When the first switching unit is in the on state, the A+ interface 171 is connected to the positive terminal of the low-voltage power supply, and the A- interface 172 is connected to the negative terminal of the low-voltage power supply.

[0065] Please refer to Figure 2 In some embodiments of this application, the charging connection confirmation interface includes a first charging connection confirmation interface 173 and a second charging connection confirmation interface 174. The first charging connection confirmation interface 173 is used to transmit a connection confirm 1 (CC1) signal, and the second charging connection confirmation interface 174 is used to transmit a connection confirm 2 (CC2) signal.

[0066] It should be explained that, in the embodiments of this application, the charging gun abnormal disconnection unit 165 can control the conduction state of the first switch unit and the second switch unit respectively. The charging gun abnormal disconnection unit 165 can control the first switch unit to be on and the second switch unit to be off; or, control the second switch unit to be on and the first switch unit to be off. In some embodiments of this application, the operation module 18 can simultaneously control the first switch unit and the second switch unit, so that the first switch unit and the second switch unit are both in the on state or both in the off state.

[0067] In this embodiment, the charging gun abnormal disconnection unit 165 can simulate different types of charging pile faults by controlling and switching the on / off states of the first and second switching units, offering high switching flexibility. When the charging gun abnormal disconnection unit 165 controls the first switching unit to be on and the second switching unit to be off, the simulated fault is: the BMS is awake, but the vehicle cannot detect the mechanical connection with the charging gun; when the charging gun abnormal disconnection unit 165 controls the second switching unit to be on and the first switching unit to be off, the simulated fault is: the vehicle has established a mechanical connection with the charging gun, but the BMS is not awake.

[0068] Please refer to Figure 2 In some embodiments of this application, the control module 13 further includes a hard-wired interaction unit 133, which is connected to the operation module 18, the charging gun abnormal disconnection unit 165, and the first switch module. The operation module 18 is used to control the on / off state of the first switch module via the hard-wired interaction unit 133, and the charging gun abnormal disconnection unit 165 is used to adjust the conduction state of the first switch unit and the second switch unit via the hard-wired interaction unit 133.

[0069] By including a hardwired interaction unit 133 in the control module 13, the operation module 18 controls the first switch module via the hardwired interaction unit 133, and the charging gun abnormal disconnection unit 165 adjusts the first and second switch units via the hardwired interaction unit 133. In other words, the part of the control module 13 used to control the first switch module is separated from the communication interaction unit 131 and the power control unit 132. This helps reduce interference from communication information between the communication interaction unit 131 and the vehicle 01, as well as the high voltage of the charging power supply 11, on the first switch module. Furthermore, the control of the first switch module requires a rapid response; setting up a separate hardwired interaction unit 133 to control the first switch module helps meet this requirement.

[0070] Please refer to Figure 2 In some embodiments of this application, the charging gun 17 further includes a high-voltage interface, and the charging test system further includes a second switch module. The second switch module is connected in series between the high-voltage interface and the charging power supply 11. The controlled terminal of the second switch module is connected to the hard-wired interaction unit 133, and the operation module 18 is used to control the disconnection of the second switch module via the hard-wired interaction unit 133.

[0071] In this way, the hard-wired interaction unit 133 can not only control the on / off state of the first switch module, but also control the off state of the second switch module. The hard-wired interaction unit 133 is fully utilized, which helps improve the integration of the control module 13. Controlling the second switch module to disconnect via the hard-wired interaction unit 133 can realize the charging emergency stop function, and can also be used to simulate an abnormal disconnection fault of the charging gun 17. This allows personnel to assess the response capability and safety of vehicle 01 in the face of abnormal fault types of the charging gun 17, enabling personnel to improve the safety of vehicle 01's charging system based on the assessment results.

[0072] It is understood that, in the embodiments of this application, when the charging gun 17 is plugged into the vehicle 01 and the second switch module is closed, the charging power supply 11 charges the vehicle 01 through the high-voltage interface. In some embodiments of this application, the high-voltage interface includes a positive high-voltage interface 175 and a negative high-voltage interface 176, and the second switch module may include a first relay and a second relay. The first relay is connected in series between the positive terminal of the charging power supply 11 and the positive high-voltage interface 175, and the second relay is connected in series between the negative terminal of the charging power supply 11 and the negative high-voltage interface 176.

[0073] Please refer to Figure 2 In some embodiments of this application, the hard-wired interaction unit 133 is connected to the communication interaction unit 131, and the communication interaction unit 131 can control the on / off state of the second switch module through the hard-wired interaction unit 133. In this way, the hard-wired interaction unit 133 not only achieves power disconnection and emergency stop functions under the control of the operation module 18, but also controls the on / off state of the power supply under the control of the communication interaction module to meet normal charging needs. The hard-wired interaction unit 133 is fully utilized, which is beneficial to improving the integration of the control module 13.

[0074] Please refer to Figure 2 In some embodiments of this application, the charging test system further includes a display module 19, which is connected to the control module 13. The display module 19 is used to display monitoring information based on the information output from the control module 13 to the display module 19. The monitoring information includes at least one of the following: charging status jump information, preset voltage and current information, actual voltage and current information, and cabinet operation status information.

[0075] By displaying monitoring information based on the information output from the control module 13, the display module 19 can assess the compatibility between vehicle 01 and the current charging test system, thus enabling testing of the vehicle 01's charging system. Furthermore, personnel can adjust the charging test system based on the monitoring information, which helps reduce the occurrence of hazards and facilitates improvements to the charging test system.

[0076] Please refer to Figure 2In some embodiments of this application, the display module 19 includes at least one of a charging state switching unit 191, a preset voltage and current unit 192, an actual voltage and current unit 193, and a cabinet operation status unit 194. The charging state switching unit 191 is used to display charging state switching information, the preset voltage and current unit 192 is used to display preset voltage and current information, the actual voltage and current unit 193 is used to display actual voltage and current information, and the cabinet operation status unit 194 is used to display cabinet operation status information.

[0077] It should be explained that, in this embodiment of the application, the preset voltage and current information is the charging information sent by vehicle 01, which represents the expected charging current and charging voltage of vehicle 01, while the actual voltage and current information represents the actual charging current and charging voltage of charging power supply 11.

[0078] Please refer to Figure 2 In some embodiments of this application, the charging test system further includes a sensor 20, which is connected to the charging power supply 11, the display module 19, and the control module 13. The sensor 20 is used to detect the output voltage of the charging power supply 11 and output it to the display module 19 and the control module 13. The control module 13 is also used to adjust the output parameters of the charging power supply 11 according to the output voltage. In some embodiments of this application, sensors 20 may be provided on the outer side of both the first relay and the second relay.

[0079] By having sensor 20 detect the output voltage of charging power supply 11 and output it to display module 19, personnel can monitor the output voltage information more accurately and in a timely manner. By connecting sensor 20 to control module 13, sensor 20 is not only used for information monitoring but also for sending output voltage information to control module 13, enabling control module 13 to adjust charging parameters more accurately. In this way, sensor 20 is fully utilized, resulting in a high degree of system integration.

[0080] Please refer to Figure 2In some embodiments of this application, the control module 13 further includes a sensor control unit 134, and the charging test system further includes a conversion module 21. The conversion module 21 is connected between the sensor control unit 134 and the sensor 20 to convert the analog signal output by the sensor 20 into a digital signal output value. In some embodiments of this application, the sensor control unit 134 is also connected to the display module 19 to transmit the output voltage information detected by the sensor 20 to the display module 19 for display. In some embodiments of this application, the sensor control unit 134 can be connected to the communication control module 13, so that the communication control module 13 can transmit the output voltage detected by the sensor 20 to the vehicle 01, and can also use the output voltage detected by the sensor 20 to control the power control unit 132, so that the power control unit 132 controls the output parameters of the charging power supply 11.

[0081] Please refer to Figure 2 In some embodiments of this application, the conversion module 21 may adopt the serial communication standard of recommended standard 232 (RS232).

[0082] Please refer to Figure 2 In some embodiments of this application, the sensing control unit 134 is connected to the hard-wired interaction unit 133, enabling the hard-wired interaction unit 133 to control the on / off state of the second switching module based on the output voltage information detected by the sensor 20. The output voltage information detected by the sensor 20 is accurate and timely, and the hard-wired interaction unit 133 controls the second switching module based on this information, which helps improve the safety of charging tests.

[0083] Please refer to Figure 2 and Figure 3 In some embodiments of this application, the operation method of the charging test system is as follows:

[0084] S1. Operation power start unit 181, start charging power supply 11.

[0085] The power start unit 181 controls the charging power supply 11 to start via the power control unit 132. After the charging power supply 11 starts, it can send actual charging parameter information to the power control unit 132. The power control unit 132 can then forward the actual charging parameter information to the display module 19, so that the display module 19 can display the actual charging parameter information.

[0086] S2, Operation parameter configuration module 12, sets the charging voltage range and charging current range of charging power supply 11;

[0087] The parameter configuration module 12 controls the charging voltage range and charging current range sequentially through the communication interaction unit 131 and the power control unit 132.

[0088] S3. Operate the charging gun connection unit 182 to control the first switch module to switch to the on state.

[0089] The charging gun connection unit 182 controls the first switch module to switch to the conducting state via the hard-wired interaction unit 133. After the first switch module switches to the conducting state, the BMS is woken up, and the vehicle 01 and the charging pile can detect that the charging gun 17 has established a mechanical connection with the vehicle 01.

[0090] S4. Swipe the card through the card swiping unit 183 to charge the vehicle 01 using the charging pile.

[0091] After the card is swiped, the communication interaction unit 131 communicates with the BMS and enters the handshake phase. After a successful handshake, the communication interaction unit 131 controls the second switch module to switch to the on state via the hard-wired interaction unit 133, enabling the charging power supply 11 to charge the vehicle 01. During the charging process, the communication interaction unit 131 can control the power control unit 132 according to the charging information sent by the BMS, so that the power control unit 132 adjusts the output parameters of the charging power supply 11. The charging information sent by the BMS can be forwarded by the communication interaction unit 131 to the display module 19 for display.

[0092] S5. Determine whether to perform fault injection. If yes, proceed to step S6; otherwise, skip step S6.

[0093] S6. Fault injection is performed through the fault injection module 16.

[0094] During charging, if it is necessary to detect the response of vehicle 01 to a charging pile malfunction, a preset fault type can be injected through the fault injection module 16. The fault injection module 16 can inject a preset fault type into the communication interaction module, causing a fault to occur during message transmission and reception. The preset fault type injected into the communication interaction module can include at least one of message timeout fault, message type fault, message interruption fault, and insulation fault. The fault injection module 16 can also inject a preset fault type into the hard-wired interaction unit 133, causing the hard-wired interaction unit 133 to control the first switching unit to conduct and the second switching unit to close, or to control the second switching unit to conduct and the first switching unit to close.

[0095] S7. Swipe the card through the card reader unit 183 to stop charging at the charging station.

[0096] After swiping the card, the card swiping unit 183 sends a signal to stop charging to the vehicle 01 via the communication interaction unit 131. The communication interaction unit 131 receives the feedback information from the vehicle 01, and controls the charging power supply 11 to stop charging via the power control unit 132 based on the feedback information from the vehicle 01. It also controls the second switch module to disconnect via the hard-wired interaction unit 133 based on the feedback information from the vehicle 01.

[0097] S8. Operate the charging gun connection unit 182 to control the first switch module to switch to the off state.

[0098] The charging gun connection unit 182 controls the first switch module to disconnect via the hard-wired interaction unit 133. The BMS detects that the charging gun 17 is disconnected, and the charging ends.

[0099] It should be noted that in the above description, "S1", "S2", etc. are used for descriptive purposes only and should not be construed as indicating or implying the order of execution of the steps. As long as there is no conflict, those skilled in the art can arbitrarily adjust the order of execution of the steps, and such adjustment does not depart from the protection scope of this application.

[0100] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A charging test system, characterized in that, include: Charging power supply; A control module is connected to the charging power supply and the vehicle. The control module is used to adjust the output parameters of the charging power supply according to the charging information of the vehicle. as well as, A parameter configuration module, connected to the control module, is used to set and adjust the output range of the charging power supply via the control module. The output range includes at least one of the charging voltage range and the charging current range.

2. The charging test system according to claim 1, characterized in that, The control module includes: A communication interaction unit, connected to the vehicle and the parameter configuration module, is used to receive the charging information; and... A power control unit is connected to the charging power supply and the communication interaction unit. The power control unit receives the charging information sent by the communication interaction unit and adjusts the output parameters of the charging power supply based on the charging information.

3. The charging test system according to claim 1, characterized in that, The charging test system also includes: A fault injection module is connected to the control module and is used to inject a preset fault type into the control module. The preset fault types include at least one of message timeout fault, message type fault, message interruption fault, and insulation fault.

4. The charging test system according to claim 1, characterized in that, The charging test system also includes: Low-voltage power supply; A charging gun, the charging gun including a low-voltage interface; A first switch module is connected in series between the low-voltage interface and the low-voltage power supply, and the controlled terminal of the first switch module is connected to the control module; and, An operation module is connected to the control module, and the operation module is used to control the on / off state of the first switch module via the control module.

5. The charging test system according to claim 4, characterized in that, The low-voltage interface includes at least a low-voltage power output interface and a charging connection confirmation interface, and the first switch module includes at least a first switch unit and a second switch unit. The first switching unit is connected in series between the low-voltage power output interface and the low-voltage power supply, and the second switching unit is connected in series between the charging connection confirmation interface and the low-voltage power supply. The control module is connected to the controlled terminal of the first switching unit and the controlled terminal of the second switching unit. The charging test system further includes a fault injection module, which includes a charging gun abnormal disconnection unit connected to the control module. The charging gun abnormal disconnection unit is used to adjust the conduction state of the first switch unit and the second switch unit via the control module.

6. The charging test system according to claim 5, characterized in that, The control module also includes: A hard-wired interaction unit is provided, which is connected to the operation module, the charging gun abnormal disconnection unit, and the first switch module. The operation module is used to control the on / off state of the first switch module via the hard-wired interaction unit, and the charging gun abnormal disconnection unit is used to adjust the conduction state of the first switch unit and the second switch unit via the hard-wired interaction unit.

7. The charging test system according to claim 6, characterized in that, The charging gun also includes a high-voltage interface, and the charging test system also includes a second switch module; The second switch module is connected in series between the high-voltage interface and the charging power supply. The controlled terminal of the second switch module is connected to the hard-wired interaction unit. The operation module is used to control the disconnection of the second switch module via the hard-wired interaction unit.

8. The charging test system according to any one of claims 1 to 7, characterized in that, The charging test system also includes: The display module is connected to the control module. The display module is used to display monitoring information based on the information output to the control module. The monitoring information includes at least one of the following: charging status jump information, preset voltage and current information, actual voltage and current information, and cabinet operation status information.

9. The charging test system according to claim 8, characterized in that, The charging test system also includes: A sensor is connected to the charging power supply, the display module, and the control module. The sensor is used to detect the output voltage of the charging power supply and output it to the display module and the control module. The control module is also used to adjust the output parameters of the charging power supply according to the output voltage.

10. A charging pile, characterized in that, The charging pile includes the charging test system as described in any one of claims 1 to 9.

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