Charging pile test system and test platform
The modularly designed charging pile testing system solves the problems of long setup time and difficult adjustment of traditional systems, enabling rapid and flexible setup of the testing environment, reducing costs and improving R&D efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHAANXI GREEN ENERGY ELECTRONIC TECH CO LTD
- Filing Date
- 2026-03-04
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional charging pile testing systems are complex in structure and bulky in size. They take a long time to set up and configure, and are difficult to adjust quickly and flexibly, resulting in slow test response speed and affecting the efficiency of R&D iteration.
The charging pile testing system adopts a modular design, including a charging module, a control module, a metering module, and an output module. It is connected to a communication bus through a standardized electrical interface, supports multiple communication protocols, and enables modular combination and flexible configuration.
It reduces testing costs, shortens development cycles, and improves the flexibility and efficiency of charging pile development, adapting to testing needs at different stages.
Smart Images
Figure CN122017423A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical equipment technology, and in particular to a charging pile testing system and testing platform. Background Technology
[0002] The widespread adoption of electric vehicles has highlighted the increasing importance of technological research and development and product testing for charging stations, which are crucial infrastructure for electric vehicles. During the development of charging station products, especially in the early stages of research and development, it is typically necessary to conduct repeated functional verification and performance testing of their core functional modules (such as charging control, energy metering, and safety protection).
[0003] Currently, traditional charging pile testing systems are often built upon complete charging pile cabinets or highly integrated testing platforms. These systems are typically complex in structure and bulky in size, requiring lengthy setup and configuration processes and significant initial investment costs. Furthermore, due to their high integration and strong coupling, traditional testing systems often struggle to adapt quickly and flexibly to changes in functional module specifications, communication protocols, or testing requirements from the early stages of development. This necessitates substantial resources for system-level reconfiguration or modification, resulting in slow test response times and severely impacting early-stage R&D iteration efficiency.
[0004] Therefore, in the early stages of charging pile development, especially when the module functions are not yet fully finalized and frequent verification and adjustments are required, existing technologies suffer from high testing system setup costs, long cycles, and insufficient flexibility. Summary of the Invention
[0005] Therefore, it is necessary to provide a charging pile testing system and testing platform to address the aforementioned technical problems.
[0006] A charging pile testing system includes: The charging module is used to provide charging power. A control module is connected to the charging module. The control module is used to acquire the test parameters of the device under test and control the working state of the charging module based on the test parameters. A metering module is connected to both the charging module and the control module. The metering module collects status information about the operating state of the charging module and feeds this status information back to the control module. The status information includes the voltage, current, and power information of the charging module. The output module is connected to the charging module, the control module and the metering module respectively, and the output module is used to output the electrical energy of the charging power supply to the device under test.
[0007] In one embodiment, the charging pile testing system further includes: The control module interacts with an external monitoring platform via a communication module.
[0008] In one embodiment, the communication module supports data interaction with an external monitoring platform via at least one of CAN bus, RS-485, 4G network, WIFI or Ethernet.
[0009] In one embodiment, the control module is used to acquire the test parameters of the device under test, and issue control commands based on the test parameters to control the working state of the charging module. The control commands include setting at least one of power on / off, output current, and output voltage.
[0010] In one embodiment, the metering module collects the status information of the charging module's working status according to a preset collection period, and feeds the status information back to the control module. The preset collection period is 2 seconds.
[0011] In one embodiment, the metering module is a smart meter.
[0012] In one embodiment, the metering module communicates via the DL / T645 protocol, Modbus protocol, or proprietary protocol, and transmits the collected voltage, current, and power information to the control module via an RS-485 interface.
[0013] In one embodiment, the charging pile testing system further includes: A power supply module is connected to the charging module, the control module, and the metering module respectively, and the power supply module is used to provide input power for the charging module, the control module, and the metering module when they are working.
[0014] In one embodiment, the power supply module provides an output voltage range including AC 0-700V, frequency 40-70Hz, and DC 0-1000V.
[0015] A testing platform, comprising the charging pile testing system described in any of the above embodiments.
[0016] Compared with existing technologies, the above-mentioned charging pile testing system and testing platform are superior. The charging pile testing system includes a charging module, a control module, a metering module, and an output module. The charging module provides charging power. The control module is connected to the charging module and is used to acquire the test parameters of the device under test and control the working state of the charging module based on the test parameters. The metering module is connected to both the charging module and the control module. The metering module collects the status information of the charging module's working state and feeds the status information back to the control module. The status information includes the voltage, current, and power information of the charging module. The output module is connected to the charging module, the control module, and the metering module and is used to output the electrical energy from the charging power supply to the device under test. Each functional module in this application is independent and can be flexibly combined according to testing needs, adapting to different stages of development and testing. Furthermore, it eliminates the need for a complete server rack, significantly reducing the time required to set up and adjust the testing environment, improving development efficiency, and lowering testing costs in the early stages of development. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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.
[0018] Figure 1 This is a structural block diagram of a charging pile testing system provided in one embodiment of this application; Figure 2 This is a structural block diagram of a test platform provided in an embodiment of this application.
[0019] Explanation of reference numerals in the attached figures: 10. Charging pile testing system; 100. Charging module; 200. Control module; 300. Metering module; 400. Output module; 500. Communication module; 600. Power supply module; 20. Testing platform. Detailed Implementation
[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0021] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the objects being described and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0024] 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 in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0025] Please see Figure 1 This application provides a charging pile testing system 10 in one embodiment. This charging pile testing system 10 is mainly used for rapid and flexible functional and performance verification of the core functional modules in the early stages of charging pile product development. The system adopts a modular design, which facilitates construction, adjustment, and reuse, significantly reducing testing costs and shortening the development cycle.
[0026] The charging pile testing system 10 includes a charging module 100, a control module 200, a metering module 300, and an output module 400. The charging module 100 provides charging power. The control module 200 is connected to the charging module 100 and is used to acquire the test parameters of the device under test and control the operating state of the charging module 100 based on these parameters. The metering module 300 is connected to both the charging module 100 and the control module 200. The metering module 300 collects the operating status information of the charging module 100 and feeds this information back to the control module 200. The status information includes the voltage, current, and power information of the charging module 100. The output module 400 is connected to the charging module 100, the control module 200, and the metering module 300, and is used to output the electrical energy from the charging power supply to the device under test.
[0027] In some embodiments, the modules are connected to each other via standardized electrical interfaces and communication buses (e.g., via an integrated wiring harness backplane) to form a complete and compact test system.
[0028] In some embodiments, the charging module 100 is the core power supply unit of this test system. The charging module 100 is essentially a programmable power module used to simulate the power output unit of a charging pile. The charging module 100 supports flexible output at different voltage levels (e.g., from low voltage to up to several hundred volts of DC or AC voltage) and current levels. Through system configuration, various charging control protocols can be set for the charging module 100, such as the State Grid standard protocol and proprietary protocols of specific manufacturers. During specific testing, operators can remotely set the operating parameters of the charging module 100 through host computer software or a control panel, such as setting the communication baud rate, sending power-on / off commands, setting the target output voltage value, the target output current value, and configuring the module group number. Simultaneously, the charging module 100 can provide real-time feedback on its operating status, including but not limited to: the actual module output current value, the module output voltage value, the ambient temperature inside the module, the firmware version number, and characteristic words used to identify module features. This design allows the test system to simulate both ideal operating conditions and various responses and fault states of real charging modules.
[0029] In some embodiments, the control module 200 serves as the "brain" of the entire testing system, responsible for coordinating and controlling the testing process. The control module 200 is typically implemented using a microcontroller unit (MCU), programmable logic controller (PLC), or industrial computer, and runs customized test logic and control software internally. The control module 200 is connected to the charging module 100 via a high-speed communication bus (preferably a CAN bus). Its main functions include: 1) Receive "parameters to be tested" from user or external test scripts. These parameters define the target operating conditions for this test, such as the expected charging curve (changes in voltage and current over time), simulated fault injection points, etc. 2) Based on the parameters to be tested, generate a specific sequence of control commands and send them to the charging module 100 via the CAN bus, such as instructing it to turn on, turn off, adjust the output voltage to a set value, or limit the output current to a set value. 3) Receive and process feedback data from the metering module 300 and the charging module 100 itself to achieve closed-loop control. For example, when the actual power fed back by the metering module 300 deviates from the target value, the control module 200 will dynamically adjust the instructions sent to the charging module 100 to ensure the accuracy of the test conditions.
[0030] In some embodiments, the metering module 300 is the system's measurement and data acquisition unit, whose core task is to measure key electrical parameters in the charging circuit with high precision. In some preferred embodiments, the metering module 300 is implemented using a high-precision smart meter, such as a Tianzheng smart meter conforming to national standards. This smart meter is connected to the control module 200 through a standard communication interface (such as an RS-485 interface). The metering module 300 continuously collects status information such as voltage (U), current (I), and active power (P) at the output of the charging module 100 according to a preset acquisition cycle (e.g., a cycle of 2 seconds). The acquisition process follows a specific communication protocol, such as the DL / T645 protocol, the Modbus protocol, or a custom proprietary protocol. The acquired real-time data is immediately packaged and sent to the control module 200 via the RS-485 bus. This data is not only used for closed-loop control but also serves as the original basis for subsequent performance analysis (such as efficiency calculation and ripple analysis).
[0031] In some embodiments, the output module 400 serves as both an interface and a safety barrier between the system and the charging pile or load simulator under test. The output module 400 receives electrical energy from the charging module 100 and transmits it to a standard charging interface, such as a GB / T standard charging gun interface, a European standard charging interface, or a high-power overcharger interface, via an output contactor (or solid-state relay) configured at its front end. The output module 400 integrates output regulation and protection circuitry. On one hand, it can accept instructions from the control module 200 to fine-tune the final output voltage and current or apply specific disturbance signals to test the response of the device under test. On the other hand, it possesses independent hardware protection functions, continuously monitoring the output voltage and current. Once the output value is detected to exceed a preset safety threshold (such as overvoltage or overcurrent), the output module 400 can drive the contactor to disconnect within milliseconds (e.g., less than 10 milliseconds), cutting off the output circuit and thus protecting the expensive downstream device under test from damage.
[0032] Each functional module in this embodiment is independent and can be flexibly combined according to testing needs to adapt to different stages of development and testing. At the same time, it does not require a complete server rack, which greatly shortens the time for setting up and adjusting the testing environment, improves development efficiency, and reduces testing costs in the early stages of development.
[0033] In some embodiments, the charging pile testing system further includes a communication module 500. The control module 200 interacts with an external monitoring platform via the communication module 500. In some embodiments, the communication module 500 supports data interaction with the external monitoring platform via at least one of CAN bus, RS-485, 4G network, WIFI, or Ethernet.
[0034] In some embodiments, the communication module 500 serves as a bridge for the system to interact with the outside world. It allows the testing system to be easily integrated into larger automated test production lines or remote monitoring platforms. The communication module 500 supports multiple communication methods, such as networking with other test equipment via a CAN bus, connecting to a local industrial control computer via RS-485, or accessing the Internet via wireless / wired methods such as 4G, Wi-Fi, and Ethernet. In a typical application scenario, the control module 200 packages all collected data (including control commands, charging module feedback, and metering data) and uploads it to a remote cloud monitoring platform via the 4G network of the communication module 500. Engineers can observe the testing process and analyze data charts in real time on the platform. Simultaneously, the monitoring platform can also issue new test cases or parameter configurations, enabling dynamic updates of remote control and testing strategies.
[0035] In some embodiments, the charging pile testing system further includes a power supply module 600. The power supply module 600 is connected to the charging module 100, the control module 200, and the metering module 300, respectively. The power supply module 600 provides input power to the charging module 100, the control module 200, and the metering module 300 during operation. In some embodiments, the output voltage range provided by the power supply module 600 includes AC 0-700V and a frequency of 40-70Hz, and DC 0-1000V.
[0036] In some embodiments, the power supply module 600 is responsible for providing a stable and reliable power supply to all other modules within the system. It features a wide input range and multi-functional output. The power supply module 600 can be connected to conventional mains power (AC 220V / 380V) or a DC power supply. Internally, it includes AC / DC and DC / DC conversion circuits, as well as a sophisticated power management chip. It can provide the specific voltage required by different modules: for example, providing 24V DC to the control circuit of the charging module 100, 12V DC or 5V DC to the control module 200 and communication module 500, and 220V AC to the display section of the metering module 300, etc. More importantly, the power supply module 600 integrates input monitoring and protection functions. It monitors the voltage and current of the input power supply in real time. When an input abnormality is detected, such as voltage fluctuations exceeding the ±3% threshold, or an input short circuit / overcurrent occurs, the protection circuit inside the power supply module 600 will immediately activate, cutting off the main input within milliseconds to ensure the safety of the entire internal circuitry of the test platform.
[0037] In some embodiments, taking the testing of the Youyou module (without physical object) by the charging pile testing system 10 described in this embodiment as an example: using the protocol, module power (40kW), baud rate, characteristic word, power on / off, input and output parameters, ambient temperature, fault, alarm information, group address information, etc. provided by the Youyou module manufacturer, the charging module 100 sets the corresponding parameters and transmission cycle; then, the control module 200 inputs the module call logic according to the system architecture and software design logic, reads the module information parameters and executes the module control, and sends and receives module information through the CAN bus in the wiring harness module. The charging module sets the power on / off, output current, output voltage, module group number, etc., and adjusts the module control parameters in real time through the module feedback values such as module execution current, module execution voltage, module temperature, module version number, etc.
[0038] The metering module 300 uses the Tianzheng meter DL / T645 protocol to periodically read the meter's total active power, current, and voltage parameters every 2 seconds. The communication module 500 uses a 4G module to transmit module information, control information, and meter information to the debugging and receiving platform via the 4G network and issue new module call strategies. The power supply module is configured with voltage and power according to power requirements: 380VAC 40kW 50HZ for module operation, 12V DC for the control system, 220V AC for the metering module, and 12V DC for the communication control module. By monitoring the input voltage, if it exceeds a set threshold (>±3V) and an overcurrent occurs, the input supply is cut off within milliseconds to ensure the safety of downstream equipment. The output module controls the output contactor to send voltage, current, and power data to the simulator via the national standard charging port according to the GB / T 27930 protocol. Test data is collected, and the performance indicators of the charging pile (such as efficiency, stability, and functional control logic) are analyzed to view the test results.
[0039] Please see Figure 2 This application provides a test platform 20 in one embodiment. The test platform 20 includes the charging pile test system 10 described in any of the above embodiments. Physically, the test platform 20 is an integrated chassis or desktop device, which integrates all the modules of the charging pile test system 10. Each module is placed inside the platform via plug-in cards or fixed installation and interconnected through a backplane bus. The front panel of the platform is equipped with various input / output interfaces (power input port, charging gun output port, network port, debugging serial port, etc.), status indicator lights, and an emergency stop button. This integrated design makes the test platform 20 easy to move, deploy, and operate, making it ideal for use in R&D laboratories, production test lines, and other similar scenarios.
[0040] In summary, the charging pile testing system and platform provided in this embodiment, through a highly modular design, decouples charging, control, metering, output, communication, and power supply functions, enabling rapid system setup and flexible configuration. Developers can replace or upgrade individual modules (such as replacing charging modules with different protocols or upgrading to higher-precision meters) according to the needs of early testing, without altering the entire system architecture. This greatly satisfies the needs of frequent iterations and rapid verification in the early stages of charging pile development, effectively reducing testing costs and shortening time to market.
[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0042] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A charging pile testing system, characterized in that, include: The charging module is used to provide charging power. A control module is connected to the charging module. The control module is used to acquire the test parameters of the device under test and control the working state of the charging module based on the test parameters. A metering module is connected to both the charging module and the control module. The metering module is used to collect the status information of the charging module's working status and feed the status information back to the control module. The status information includes the voltage, current and power information of the charging module. as well as The output module is connected to the charging module, the control module and the metering module respectively, and the output module is used to output the electrical energy of the charging power supply to the device under test.
2. The charging pile testing system as described in claim 1, characterized in that, Also includes: The control module interacts with an external monitoring platform via a communication module.
3. The charging pile testing system as described in claim 2, characterized in that, The communication module supports data interaction with an external monitoring platform via at least one of the following methods: CAN bus, RS-485, 4G network, WIFI, or Ethernet.
4. The charging pile testing system as described in claim 1, characterized in that, The control module is used to acquire the test parameters of the device under test, and issue control commands based on the test parameters to control the working state of the charging module. The control commands include setting at least one of power on / off, output current and output voltage.
5. The charging pile testing system as described in claim 1, characterized in that, The metering module collects the status information of the charging module's working status according to a preset collection period of 2 seconds and feeds the status information back to the control module.
6. The charging pile testing system as described in claim 5, characterized in that, The metering module is a smart meter.
7. The charging pile testing system as described in claim 5, characterized in that, The metering module communicates via the DL / T645 protocol, Modbus protocol, or proprietary protocol, and transmits the collected voltage, current, and power information to the control module via the RS-485 interface.
8. The charging pile testing system as described in claim 1, characterized in that, Also includes: A power supply module is connected to the charging module, the control module, and the metering module respectively, and the power supply module is used to provide input power for the charging module, the control module, and the metering module when they are working.
9. The charging pile testing system as described in claim 8, characterized in that, The power supply module provides an output voltage range of AC 0-700V, frequency 40-70Hz, and DC 0-1000V.
10. A testing platform, characterized in that, Includes the charging pile testing system as described in any one of claims 1-9.