Charging pile test system

Abstract

The utility model relates to a charging pile test system, comprising a photovoltaic simulation module, the input end of which is connected with a first node and is used for being connected with a power grid power supply through the first node and obtaining a photovoltaic simulation power supply based on the simulation of the power grid power supply; the output end of the photovoltaic simulation module is connected with the second node and is used for being connected with the test module through the second node; the input end of the test module is connected with the second node, and the test module is used for receiving a photovoltaic analog power supply; the output end of the test module is connected with the first node and used for being connected with a power grid power supply through the first node, and the second node is connected with the first node; the photovoltaic simulation module and the test module are both provided with a replaceable charging pile to be tested and an inverter. By adopting the charging pile test system, the power utilization cost can be reduced, and the test cost of the charging pile is reduced; and the charging pile to be tested can be replaced, so that the applicability of the charging pile test system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicle charging, in particular to a charging pile testing system. BACKGROUND

[0002] With the development of renewable energy, photovoltaic power generation has gradually become an important power supply form. In the charging pile system of electric vehicles, in order to ensure that the charging pile can be efficiently and safely connected with the photovoltaic system and charged, it is usually necessary to test the adaptability and performance of the charging pile by simulating the photovoltaic scene. This simulation of the photovoltaic scene test can verify the working stability of the charging pile under different photovoltaic power generation and environmental conditions, and ensure its reliability in actual application.

[0003] In the system for testing the charging pile in the traditional technology under the simulated photovoltaic scene, an inverter is usually externally connected to simulate photovoltaic power generation, and the simulated photovoltaic power generation is used to charge the charging pile. At this time, the charging pile obtains the current size and direction on the power grid through the current transformer (CT) ring of the external or internal detection unit, so as to determine whether the charging operation needs to be performed.

[0004] However, in the process of testing the charging pile in the traditional technology, the test current of the charging pile is consumed by the load, converted into heat and then dissipated, thereby causing a large amount of waste of electric energy and increasing the cost of testing. CONTENT OF THE INVENTION

[0005] Therefore, it is necessary to provide a charging pile testing system capable of reducing the cost of electricity and thereby reducing the cost of testing in view of the above technical problems.

[0006] The present application provides a charging pile testing system, which comprises:

[0007] a photovoltaic simulation module, an input end of the photovoltaic simulation module being connected with a first node, for being connected with a power grid power supply through the first node and obtaining a photovoltaic simulation power supply based on the power grid power supply; an output end of the photovoltaic simulation module being connected with a second node, for being connected with a testing module through the second node;

[0008] a testing module, an input end of the testing module being connected with the second node, for receiving the photovoltaic simulation power supply, the second node being connected with the first node; an output end of the testing module being connected with the first node, for being connected with the power grid power supply through the first node;

[0009] The photovoltaic simulation module and the testing module are both provided with a replaceable charging pile to be tested and an inverter.

[0010] In one of the embodiments, the system further comprises:

[0011] A detection unit is arranged between the first node and the second node, and is configured to detect the current state of the first node and the second node, and adjust the power supply mode of the grid power supply and the photovoltaic simulation power supply according to the current state.

[0012] In one of the embodiments, the system further comprises:

[0013] A control module is in communication connection with the photovoltaic simulation module, the test module and the detection unit.

[0014] In one of the embodiments, the replaceable test charging pile comprises an AC test charging pile and a DC test charging pile.

[0015] In one of the embodiments, the photovoltaic simulation module and the test module are both formed by independent test units; the test unit in the photovoltaic simulation module and the test unit in the test module can be used interchangeably.

[0016] In one of the embodiments, the test unit comprises an AC test charging pile and an OBC assembly, or the test unit comprises a DC test charging pile and an inverter; the OBC assembly comprises a DC power supply and an inverter.

[0017] In one of the embodiments, the test charging pile has a communication function and is used for communication with the OBC assembly.

[0018] In one of the embodiments, the photovoltaic simulation module and the test module are both formed by at least one independent test unit.

[0019] One end of the test unit in the photovoltaic simulation module is connected with the first node, and is used for receiving the grid power supply and simulating the grid power supply into the photovoltaic simulation power supply through the inverter.

[0020] In one of the embodiments, the inverter adjusts the output voltage and current according to the demand, so as to regulate the photovoltaic power generation of the photovoltaic simulation module.

[0021] In one of the embodiments, the test charging pile comprises a load adjustment circuit, and the test charging pile regulates the power consumption of the test charging pile through the load adjustment circuit.

[0022] The charging pile test system comprises a photovoltaic simulation module, an input end of the photovoltaic simulation module is connected with a first node, the photovoltaic simulation module is used for being connected with a power grid power supply through the first node, and a photovoltaic simulation power supply is simulated based on the power grid power supply; an output end of the photovoltaic simulation module is connected with a second node, the photovoltaic simulation module is used for being connected with a test module through the second node; the test module, an input end of the test module is connected with the second node, the test module is used for receiving the photovoltaic simulation power supply, and the second node is connected with the first node; an output end of the test module is connected with the first node, the test module is used for being connected with the power grid power supply through the first node; wherein the photovoltaic simulation module and the test module are both provided with replaceable to-be-tested charging piles and inverters. The charging pile test system can reduce actual power consumption, reduce power consumption cost, and further reduce the test cost of the charging pile. The charging pile test system can replace the to-be-tested charging pile, and improve the applicability of the charging pile test system. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 It is a structural schematic diagram of the charging pile test system in an embodiment. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below in conjunction with the drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0028] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0030] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes, and do not represent the only embodiment.

[0031] Reference Figure 1 , Figure 1The utility model discloses a charging pile test system, photovoltaic simulation module, the input of this photovoltaic simulation module is connected with first node, is used for connecting with the power grid power supply through first node, and obtains photovoltaic simulation power supply based on the power grid power supply simulation, the output of photovoltaic simulation module is connected with second node, is used for connecting with test module through second node, test module, the input of this test module is connected with second node, is used for receiving photovoltaic simulation power supply, the input of test module still connects with the power grid power supply through first node, is used for receiving the power grid power supply, this second node is connected with first node, makes the input of test module connect with the power grid power supply, wherein, photovoltaic simulation module and test module all are provided with the replaceable charging pile of measuring and inverter. In the above, make the current after testing flow to first node, and the current after testing can be the power grid power supply also can be photovoltaic simulation power supply.

[0032] Among them, simulation module and test module all adopt independent test unit constitution, and the test unit in the photovoltaic simulation module and the test unit in the test module can be used mutually replace. That is, the test unit in the photovoltaic simulation module and the test unit in the test module are interchangeable configuration, and the test unit in the photovoltaic simulation module and the test unit in the test module can realize the same function, and the test unit in the photovoltaic simulation module and the test unit in the test module can be flexibly interchanged, replace without affecting the performance or function of overall system, can improve the flexibility, compatibility and maintenance convenience of charging pile test system.

[0033] Exemplarily, test unit includes measured ac charging pile and OBC component, or test unit includes measured dc charging pile and inverter, wherein, OBC component includes dc power supply piece and inverter. The inside of the measured dc charging pile includes dc power supply piece. Simulation module and test module all adopt independent test unit constitution, so that simulation module and test module have multiplexing function. The dc power supply piece is a dc power supply module, which is a charging module used in the charging pile, for receiving external power supply (such as photovoltaic simulation power supply) and converting it into the electric energy required for charging electric vehicle battery.

[0034] Exemplarily, please refer to Figure 1 Test unit is composed of electric vehicle supply equipment (EVSE) component and on-board charger (OBC) component, wherein, EVSE component can be EVSE (AC), that is, EVSE component can be set as ac charging pile, and OBC component is composed of dc power supply piece and inverter. The EVSE component of test unit is set as EVSE (AC) suitable for testing ac charging pile.

[0035] The charging pile can be divided into AC charging pile and DC charging pile, and the two charging piles are different in power supply demand and test conditions. Therefore, in order to increase the flexibility of the charging pile test system, the to-be-tested charging pile is set as a replaceable to-be-tested charging pile, that is, the EVSE component in the test unit is replaceable, and the replaceable to-be-tested charging pile includes a to-be-tested AC charging pile and a to-be-tested DC charging pile. Optionally, if it is necessary to test the DC charging pile (EVSE (DC)), the EVSE (AC) in the test unit can be replaced by the EVSE (DC), and then the test unit is composed of the DC charging pile and the inverter.

[0036] By replacing the EVSE component, the charging pile test system can simulate and verify the performance of different to-be-tested charging piles in actual use according to test needs, thereby improving the flexibility and universality of the charging pile test system. In the present application, the test unit is modularized, which can simplify the wiring and wiring mode of the overall charging pile test system, simplify the structure and working process of the whole system, enable each test unit to be quickly connected or disconnected, and improve the flexibility and maintainability of the system.

[0037] The simulation module is used to convert the AC power of the power grid power supply into DC power to simulate the output characteristics of the photovoltaic cell panel, so as to generate a photovoltaic simulation power supply, and transmit the photovoltaic simulation power supply to the test module through the second node. Optionally, the simulation module is also used to simulate the output characteristics of the photovoltaic cell panel under different light conditions. Specifically, the simulation module can generate voltage, current and other characteristics according to the set simulation parameters (such as light intensity, temperature, etc.) through the inverter to simulate the output characteristics of the photovoltaic cell panel under different light conditions.

[0038] The test module is used to receive the photovoltaic simulation power supply from the simulation module and receive the power grid power supply, and use the photovoltaic simulation power supply and / or the power grid power supply to test the performance of at least one to-be-tested charging pile. The to-be-tested charging pile can be replaced as needed, that is, the test module supports testing different types of charging piles to meet different test needs, such as replacing the EVSE (AC) in the test unit with the EVSE (DC). Specifically, when the photovoltaic simulation power supply is transmitted to the test module through the second node, the test module tests the to-be-tested charging pile according to the performance requirements of the charging pile. For example, the test module can measure the performance of the to-be-tested charging pile under different simulated voltage and current conditions to verify its charging performance, efficiency and other key indicators. After the test module tests the to-be-tested charging pile, the tested current flows back to the first node of the simulation module, ensuring the recycling of the power supply and avoiding waste or excessive consumption of the power supply. The tested current can be the power grid power supply or the photovoltaic simulation power supply.

[0039] In this embodiment, the grid power first enters the simulation module through the first node. The simulation module converts the grid power into a photovoltaic simulation power that meets the characteristics of the photovoltaic system. The simulation module can simulate the output characteristics of the photovoltaic panel under different light conditions through the inverter, that is, the simulation module can simulate the input conditions of different photovoltaic power environments, and can comprehensively evaluate the performance of the to-be-tested charging pile, thereby ensuring the reliability and stability of the to-be-tested charging pile in the actual photovoltaic power generation scene. The photovoltaic simulation power is transmitted to the test module through the second node. The test module receives the photovoltaic simulation power and tests the performance of the to-be-tested charging pile. According to the test requirements, the to-be-tested charging pile can be an alternating current charging pile (EVSE (AC)) or a direct current charging pile (EVSE (DC)), which can improve the flexibility of the charging pile test system, so that the test module can adapt to different types of charging piles. After the test is completed, the tested current is returned to the first node, effectively avoiding the waste of power and reducing the electricity cost, thereby reducing the test cost of the charging pile. The tested current can be the grid power or the photovoltaic simulation power.

[0040] In an exemplary embodiment, the photovoltaic simulation module and the test module are each composed of at least one independent test unit. One end of the test unit in the photovoltaic simulation module is connected to the first node for receiving the grid power and simulating the grid power into a photovoltaic simulation power through the inverter. The other end of the test unit in the photovoltaic simulation module is connected to the second node for transmitting the photovoltaic simulation power to the test module through the second node.

[0041] Please refer again to Figure 1 The photovoltaic simulation module includes at least one test unit for simulating power output under different photovoltaic power generation scenarios. Each test unit converts the grid power into a photovoltaic simulation power through an inverter and provides power to the to-be-tested charging pile. The photovoltaic simulation power output by these test units has certain adjustability and can simulate photovoltaic power generation characteristics under various environmental conditions, such as varying light intensity and temperature.

[0042] Each test unit is connected to the second node for power transmission with the test module, that is, all test units are connected through a common electrical node, reducing the number of electrical wiring in the system, reducing the risk of wiring errors, and improving the reliability of the overall system. By connecting all test units of the simulation module to the second node, the power transmission path is clearer, improving the readability and maintainability of the system.

[0043] In this embodiment, the photovoltaic simulation power converted by the simulation module is stably transmitted to the test module through the additionally added second node, which can ensure that the photovoltaic simulation power is efficiently and stably delivered from the simulation module to the test module for subsequent charging pile test. In addition, at least one test unit is connected to the second node, which can also reduce the number of electrical wiring in the system, reduce the risk of wiring errors, and improve the reliability of the overall system.

[0044] In an exemplary embodiment, the inverter adjusts the output voltage and current according to the demand to regulate the photovoltaic power generation of the photovoltaic simulation module.

[0045] Optionally, the inverter can simulate the power output under different photovoltaic environments according to the test demand by precisely adjusting the output voltage and current, so that the simulation module can provide appropriate power under various photovoltaic power generation environments, and ensure that the charging pile under test is tested under different power input conditions. For example, when simulating a photovoltaic environment with sufficient sunlight, the inverter will increase the output voltage and current to simulate high photovoltaic power generation; when simulating a photovoltaic environment with weak light, the inverter will reduce the voltage and current output to simulate low photovoltaic power generation.

[0046] In this embodiment, the adjustment function of the inverter enables the simulation module to accurately simulate the output power of the photovoltaic power generation system, so that the charging pile test system can reflect the performance of the charging pile under test under different photovoltaic power generation conditions, effectively verify the charging efficiency and stability of the charging pile under test under different photovoltaic input conditions, and thus improve the adjustability and reliability of the charging pile test system.

[0047] In an exemplary embodiment, the charging pile under test includes a load adjustment circuit, and the charging pile under test regulates the power consumption of the charging pile under test through the load adjustment circuit.

[0048] During the operation of the charging pile, the charging pile will provide corresponding power output according to the battery demand of the electric vehicle. The load adjustment circuit adjusts the power obtained by the charging pile from the external power source (such as a photovoltaic simulation power or a grid power) by changing the size of the current or the change of the voltage, thereby affecting the overall power consumption of the charging pile. For example, the charging pile needs a large current for fast charging under high load (such as when the battery is low); and reduces the input of the current under low load (such as when the battery is close to full).

[0049] Optionally, in the actual charging process, the power supply of the charging pile is dynamically changed, especially in different charging time periods and different load conditions. The load adjustment circuit can simulate the load change in the actual working environment by adjusting the power consumption (i.e., power consumption) of the charging pile, so that the test process is more in line with the actual situation. When simulating the high load condition of the charging pile, the load adjustment circuit increases the input of the current to simulate the high power consumption of the charging pile when the battery is rapidly charged; when simulating the low load condition of the charging pile, the load adjustment circuit reduces the input of the current to test the low power consumption of the charging pile to be tested when the battery charging is close to completion. The introduction of the load adjustment circuit enables the charging pile to be tested under different power load conditions.

[0050] In the charging process, the power consumption of the charging pile to be tested changes with the change of the load. In the embodiment, the power consumption of the charging pile to be tested can be individually regulated by the load adjustment circuit; and by adjusting the load through the load adjustment circuit, the performance of the charging pile to be tested under different load conditions can be verified, such as efficiency, stability, etc. under low load and high load conditions, which can simulate more complex power consumption scenarios, so that the test of the charging pile to be tested can cover a wider range of application scenarios, and the versatility and stability of the charging pile test system are improved.

[0051] In an exemplary embodiment, the system further comprises a detection unit disposed between the first node and the second node, the detection unit being configured to detect a current state of the first node and the second node.

[0052] The detection unit is a current transformer (CT). The CT is configured to continuously detect the current condition and adjust the power supply mode of the grid power supply and the photovoltaic simulation power supply in real time according to the charging demand of the charging pile to be tested.

[0053] Please refer to Figure 1 The CT is disposed in the current path of the charging pile test system and is located in the detection loop between the first node and the second node. Specifically, the CT is located in the current detection link between the EVSE component and the grid power supply. The CT can detect the current flow condition between the charging pile to be tested and the grid power supply, so as to determine the charging demand. The CT can not only detect the size of the current, but also sense the flow direction of the current. For example, if the CT detects that the current direction is from the grid power supply to the charging pile to be tested, it means that the grid power supply is providing power to the charging pile to be tested, indicating that the photovoltaic power generation is insufficient; if the CT detects that the current direction is from the charging pile to be tested to the grid, it means that the charging pile to be tested is feeding power back to the grid power supply, indicating that the photovoltaic power generation is excessive.

[0054] If the CT detects insufficient photovoltaic power generation (such as the output of the photovoltaic panel being affected by the environment or the load demand increasing), the power supply of the grid power supply side is started to supplement the power supply to ensure the stable operation of the charging pile. Conversely, if the photovoltaic power generation is excessive, the photovoltaic analog power supply side is preferentially used to reduce the burden of the grid power supply.

[0055] In this embodiment, through the real-time current feedback of the detection unit, the charging pile test system can dynamically adjust the power supply mode of the grid power supply and the photovoltaic analog power supply side, optimize the use of electric energy, reduce waste, and ensure that the power demand of the charging pile is effectively met. Specifically, when the photovoltaic analog power supply is sufficient, the photovoltaic analog power supply is preferentially used to supply the charging pile to work, reducing the grid power consumption; if the photovoltaic analog power supply is insufficient, the system automatically switches to grid power supply to ensure the stable operation of the charging pile.

[0056] In the previous exemplary embodiment, the detection unit is further configured to adjust the power supply mode of the grid power supply and the photovoltaic analog power supply side according to the current state of the first node and the second node.

[0057] Optionally, when the detection unit detects that the current of the first node is flowing in the forward direction, the power supply mode is adjusted to increase the power supply proportion of the grid power supply; when the detection unit detects that the current of the first node is flowing in the reverse direction, the tested current is caused to flow back to the first node after the test module tests the to-be-tested charging pile.

[0058] Optionally, the forward flow is the current flowing direction from the grid power supply to the to-be-tested charging pile, indicating that the to-be-tested charging pile is charging from the grid power supply, and in this case, the to-be-tested charging pile is dependent on the power supply of the grid power supply. The reverse flow is the current flowing direction from the to-be-tested charging pile to the grid power supply, indicating that the photovoltaic power generation is excessive, and the to-be-tested charging pile feeds back the excess electric energy to the grid power supply.

[0059] For example, when the detection unit detects that the current is flowing in the forward direction, it indicates that the to-be-tested charging pile is obtaining electric energy from the grid power supply, and the system needs to adjust the power supply mode of the to-be-tested charging pile. Specifically, the power supply proportion of the grid power supply needs to be increased to ensure that the to-be-tested charging pile can stably obtain sufficient electric power during charging, avoiding the to-be-tested charging pile from being unable to normally charge due to insufficient power supply. When the detection unit detects that the current is flowing in the reverse direction, it indicates that the photovoltaic power generation of the analog module is excessive, and the photovoltaic analog power supply side is preferentially used to reduce the burden of the grid power supply. Moreover, the system returns the tested current to the grid power supply through the "backflow" mechanism, and the tested current can be excess grid power supply or excess photovoltaic analog power supply.

[0060] In the embodiment, the flow direction of the current is monitored by the detection unit, and the power supply mode of the to-be-tested charging pile is adjusted according to the current direction, so that the to-be-tested charging pile can not only efficiently obtain electric energy from the grid power supply or the photovoltaic simulation power supply, but also can feed back the excess photovoltaic simulation power supply to the grid, realize the rational utilization of electric energy and the sustainable operation of the system, and reduce the test cost.

[0061] In an exemplary embodiment, the to-be-tested charging pile has a communication function for communicating with the OBC component.

[0062] Optionally, the to-be-tested charging pile communicates with other devices such as the grid, the OBC component, etc. through its communication module for real-time data transmission. The communication function of the to-be-tested charging pile allows it to coordinate with the grid, and the communication function of the to-be-tested charging pile also allows the grid to communicate with the OBC component, transmits charging information to the OBC component, ensures that the charging demand of the vehicle-mounted battery during the charging process is met, and makes necessary adjustments. The to-be-tested charging pile can also include a control panel, which can record the power supply situation of the first node.

[0063] In the embodiment, the to-be-tested charging pile has a communication function, and the to-be-tested charging pile is also used to record the power supply situation of the first node, so that the to-be-tested charging pile can exchange real-time information with the grid and the OBC component, and automatically adjust the current, voltage and other parameters during the charging process according to the real-time data.

[0064] In an exemplary embodiment, the system further comprises a control module in communication connection with the photovoltaic simulation module, the test module and the detection unit.

[0065] The control module is in communication connection with the photovoltaic simulation module, the test module and the detection unit for real-time acquisition of the working state and data of each module. Optionally, the control module can adjust the output voltage and current of the photovoltaic simulation power supply in real time through the connection with the photovoltaic simulation module to ensure stable power supply for the to-be-tested charging pile. The control module is connected with the test module to adjust the test conditions according to the state of the to-be-tested charging pile, ensuring stable power supply during the test process and not affected by external power fluctuations. The control module also communicates with the detection unit to monitor the current and voltage state of the system in real time, and dynamically adjusts the power supply mode of the grid power supply and the photovoltaic simulation power supply side according to the monitoring data, to ensure that the entire system maintains a good operating state during the test process, avoiding unstable power supply or failure. The use of the control module can improve the automation and intelligent level of the charging pile test system, ensuring the accuracy, reliability and efficiency of the charging pile test process.

[0066] Any combination of the technical features in the above embodiments can be made, and for the sake of brevity, not all possible combinations are described above, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0067] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the application patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the application patent should be subject to the appended claims.

Claims

1. A charging pile test system, characterized in that, The system comprises: a photovoltaic simulation module, an input end of the photovoltaic simulation module being connected with a first node, for connecting with a grid power supply through the first node and simulating a photovoltaic simulation power supply based on the grid power supply; an output end of the photovoltaic simulation module being connected with a second node, for connecting with a test module through the second node; a test module, an input end of the test module being connected with the second node, for receiving the photovoltaic simulation power supply, the second node being connected with the first node; an output end of the test module being connected with the first node, for connecting with the grid power supply through the first node; wherein the photovoltaic simulation module and the test module are both provided with replaceable to-be-tested charging piles and inverters.

2. The system of claim 1, wherein, The system further comprises: a detection unit, the detection unit being arranged between the first node and the second node, the detection unit being used for detecting current states of the first node and the second node and adjusting power supply modes of the grid power supply and the photovoltaic simulation power supply side according to the current states.

3. The system of claim 2, wherein, The system further comprises: a control module, the control module being communicatively connected with the photovoltaic simulation module, the test module and the detection unit.

4. The system of claim 1, wherein, The replaceable to-be-tested charging pile comprises a to-be-tested alternating current charging pile and a to-be-tested direct current charging pile.

5. The system of claim 1, wherein, The photovoltaic simulation module and the test module are both formed by independent test units; the test units in the photovoltaic simulation module and the test units in the test module can be used interchangeably.

6. The system of claim 5, wherein, The test unit comprises a to-be-tested alternating current charging pile and an OBC assembly, or the test unit comprises a to-be-tested direct current charging pile and an inverter; wherein the OBC assembly comprises a direct current power supply and an inverter.

7. The system of claim 6, wherein, The to-be-tested charging pile has a communication function and is used for communicating with the OBC assembly.

8. The system of claim 6, wherein, The photovoltaic simulation module and the test module are both formed by at least one independent test unit; one end of the test unit in the photovoltaic simulation module is connected with the first node, for receiving the grid power supply and simulating the grid power supply into the photovoltaic simulation power supply through the inverter.

9. The system of claim 1, wherein, The inverter adjusts output voltage and current according to requirements, so as to regulate and control photovoltaic power generation of the photovoltaic simulation module.

10. The system of claim 1, wherein, The to-be-tested charging pile comprises a load adjustment circuit, the to-be-tested charging pile regulating and controlling power consumption of the to-be-tested charging pile through the load adjustment circuit.

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