Control panel test platform

By designing a control board test platform including sampling panels, short wiring, fixed resistors, grid simulators and host computers, the problems of high testing costs and low efficiency in the existing technology are solved, and efficient and low-cost testing of the control circuit board is achieved.

CN222887748UActive Publication Date: 2025-05-20JIANGSU TRINATEC ELECTRIC CO LTD
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Patent Information

Application Number
CN202421988182.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-15
Publication Date
2025-05-20
Estimated Expiration
2034-08-15

AI Technical Summary

Technical Problem

The existing technology has problems of high cost and low efficiency in the testing of control circuit boards, which is difficult to meet the market's demand for efficient and low-cost testing platforms.

Method used

A control board test platform is designed, including sample panels, short wiring, fixed resistors, grid simulators and host computers. These components simulate actual signals or input digital signals to test the response of the control board to be tested.

Benefits of technology

It realizes efficient testing of the circuit board to be tested, which can not only simulate actual signals to judge the circuit board response, but also input digital signals to test with strict requirements. The platform structure is simple and low-cost, which improves the testing efficiency.

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Abstract

The utility model provides a control panel test platform. The control panel test platform comprises a sampling board, a short-circuit wire, a fixed resistor, a power grid simulator and an upper computer, the sampling board comprises a first dry contact state interface, a first temperature sampling interface, a first power grid and an inverter voltage sampling interface; the short-circuit wire is connected with the first dry contact state interface; the fixed resistor is connected with the first temperature sampling interface; the power grid simulator is connected with the first power grid and the inverter voltage sampling interface; the sampling board is further connected with a control board to be tested, and the upper computer is connected with the control board to be tested. The circuit board to be tested can simulate actual signals and input set digital signals, not only can the response of the circuit board to be tested to the actual input signals be judged, but also the response of the circuit board to be tested to the digital signals with strict requirements can be judged, the structure is simple, the cost is low, and the test efficiency can be improved.
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Description

Technical Field

[0001] The utility model relates to the field of circuit board testing, in particular to a control board testing platform. Background Technique

[0002] With the booming development of the new energy industry, the market demand for photovoltaic inverters and energy storage converters is increasing day by day. Many photovoltaic and energy storage enterprises have joined the ranks of independently developing photovoltaic inverters and energy storage converters. These devices all contain control circuit boards, and the circuit boards and their testing schemes independently developed by each enterprise have their own advantages and differences.

[0003] During the R & D and testing process, devices such as analog sources, oscilloscopes, and signal generators are usually used for testing, but this method is complex to operate and has low efficiency. Although FCT (functional test) testing can improve efficiency, its cost is relatively high. Therefore, in order to control costs while improving testing efficiency, there is an urgent need to develop a simple testing platform dedicated to testing control circuit boards.

[0004] Therefore, there is an urgent need to invent a control board testing platform to effectively solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to propose a control board testing platform to effectively solve the problems of high testing cost and low testing efficiency.

[0006] To achieve the above purpose, the utility model provides a control board testing platform, including: a sampling board, a short connection wire, a fixed resistor, a grid simulator, and a host computer;

[0007] The sampling board includes a first dry contact state interface, a first temperature sampling interface, and a first grid and inverter voltage sampling interface;

[0008] The short connection wire is connected to the first dry contact state interface;

[0009] The fixed resistor is connected to the first temperature sampling interface;

[0010] The grid simulator is connected to the first grid and inverter voltage sampling interface;

[0011] The sampling board is also connected to the control board to be tested, and the host computer is connected to the control board to be tested.

[0012] The host computer is connected to the RS485 interface on the control board to be tested.

[0013] Further, it also includes a battery simulator; the sampling board also includes a first battery and bus voltage sampling interface; the battery simulator is connected to the first battery and bus voltage sampling interface.

[0014] Further, it further includes a switching power supply; the sampling board further includes a power interface; the switching power supply is connected to the power interface.

[0015] Further, it further includes a signal generator, which is connected to the current sampling interface of the control board to be tested.

[0016] Further, it further includes a display board, which is connected to the IGBT drive interface of the control board to be tested.

[0017] Further, the debugging software applied by the host computer is a three-phase energy storage converter acquisition and monitoring system.

[0018] Further, the sampling board further includes a first relay control interface, a second dry contact status interface and a second temperature sampling interface. The first relay control interface is connected to the second relay control interface of the control board to be tested; the second dry contact status interface is connected to the third dry contact status interface of the control board to be tested; the second temperature sampling interface is connected to the third temperature sampling interface of the control board to be tested.

[0019] Further, the sampling board further includes a second power grid and an inverter voltage sampling interface, which is connected to the third power grid and the inverter voltage sampling interface of the control board to be tested.

[0020] Further, the sampling board further includes a second battery and a bus voltage sampling interface, which is connected to the third battery and the bus voltage sampling interface of the control board to be tested.

[0021] Compared with the prior art, the beneficial effects of the present utility model are mainly reflected in: providing a control board test platform, including: a sampling board, a short wire, a fixed resistor, a power grid simulator and a host computer; the sampling board includes a first dry contact status interface, a first temperature sampling interface, a first power grid and an inverter voltage sampling interface; the short wire is connected to the first dry contact status interface; the fixed resistor is connected to the first temperature sampling interface; the power grid simulator is connected to the first power grid and the inverter voltage sampling interface; the sampling board is also connected to the control board to be tested, and the host computer is connected to the control board to be tested. It can simulate actual signals for the control board to be tested, or input set digital signals, and can judge the response of the control board to be tested to actual input signals, and can also judge the response of the control board to be tested to strictly required digital signals. Moreover, the structure of the present utility model is simple and the cost is low, which can improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the principle of the control board test platform according to an embodiment of the present utility model;

[0023] Figure 2Structural schematic diagram of a control board test platform according to an embodiment of the present utility model;

[0024] Figure 3 Schematic diagram of the upper computer debugging interface in an embodiment of the present utility model;

[0025] Figure 4 Flow schematic diagram of the upper computer debugging software in an embodiment of the present utility model;

[0026] Figure 5 Schematic diagram of the test result in an embodiment of the present utility model;

[0027] In the figure, 1, switching power supply; 2, battery simulator; 3, grid simulator; 4, fixed resistor; 5, short circuit wire; 6, sampling board; 7, control board to be tested; 8, upper computer; 9, signal generator; 10, display board; 11, battery voltage display; 12, bus voltage display; 13, positive half bus voltage display; 14, negative half bus voltage display; 15, three-phase grid voltage display; 16, three-phase inverter voltage display; 17, 7-channel temperature display; 18, 10-channel dry contact status display; 19, 10-channel relay control button; 20, 18-channel PWM drive; 21, 6-channel fault display; 22, three-phase inverter current display. Detailed implementation manners

[0028] The following will describe a control board test platform of the present utility model in more detail with reference to the accompanying drawings, which show the preferred embodiments of the present utility model. It should be understood that those skilled in the art can modify the present utility model described herein while still achieving the advantageous effects of the present utility model. Therefore, the following description should be understood as a broad guidance for those skilled in the art and not as a limitation to the present utility model.

[0029] In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present utility model will be clearer according to the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present utility model.

[0030] As Figure 1 and Figure 2 shown, this embodiment provides a control board test platform, including: a sampling board 6, a short circuit wire 5, a fixed resistor 4, a grid simulator 3, and an upper computer 8; the sampling board 6 includes a first dry contact status interface, a first temperature sampling interface, a grid and a first inverter voltage sampling interface; the short circuit wire 5 is connected to the first dry contact status interface; the fixed resistor 4 is connected to the first temperature sampling interface; the grid simulator 3 is connected to the first grid and inverter voltage sampling interface;

[0031] The sampling board 6 is also connected to the control board 7 to be measured, and the host computer 8 is connected to the control board 7 to be measured.

[0032] The host computer 8 is connected to the RS485 interface on the control board 7 to be measured.

[0033] Furthermore, a battery simulator 2 is further included; the sampling board 6 further includes a first battery and a bus voltage sampling interface; the battery simulator 2 is connected to the first battery and the bus voltage sampling interface.

[0034] In this embodiment, a switching power supply 1 is further included; the sampling board 6 further includes a power interface; the switching power supply 1 is connected to the power interface.

[0035] In this example, a signal generator 9 is further included, which is connected to the current sampling interface of the control board 7 to be measured.

[0036] Specifically, a display board 10 is further included, which is connected to the IGBT drive interface of the control board 7 to be measured.

[0037] In this embodiment, the debugging software applied by the host computer 8 is a three-phase energy storage converter acquisition and monitoring system. This debugging software is prior art and will not be introduced in detail here.

[0038] Furthermore, the sampling board 6 further includes a first relay control interface, a second dry contact status interface and a second temperature sampling interface. The first relay control interface is connected to the second relay control interface of the control board 7 to be measured; the second dry contact status interface is connected to the third dry contact status interface of the control board 7 to be measured; the second temperature sampling signal is connected to the third temperature sampling interface of the control board 7 to be measured.

[0039] Specifically, the sampling board 6 further includes a second power grid and an inverter voltage sampling interface, which are connected to the third power grid and the inverter voltage sampling interface of the control board 7 to be measured.

[0040] Even further, the sampling board 6 further includes a second battery and a bus voltage sampling interface, which are connected to the third battery and the bus voltage sampling interface of the control board 7 to be measured.

[0041] As Figure 3 shown, it is a schematic diagram of the host computer debugging interface in this embodiment. The host computer debugging interface includes: battery voltage display 11, bus voltage display 12, positive half bus voltage display 13, negative half bus voltage display 14, three-phase power grid voltage display 15, three-phase inverter voltage display 16, 7-channel temperature display 17, 10-channel dry contact status display 18, 10-channel relay control buttons 19, 18-channel PWM drive 20, 6-channel fault display 21, and three-phase inverter current display 22.

[0042] The test platform for the control board of the present utility model, and the specific test method is as follows:

[0043] 1. Build a test platform to realize the connection of each module;

[0044] 2. Start the switching power supply 1 to supply power to the sampling board 6;

[0045] 3. Observe whether the values of the 7-channel temperature display 17 on the debugging interface of the host computer 8 are within the qualified range;

[0046] 4. Start the battery simulator 2 to provide a DC voltage to the sampling board 6, and observe whether the values of the battery voltage display, bus voltage display 12, positive half bus voltage display, and negative half bus voltage display 14 on the debugging interface of the host computer 88 are within the qualified range;

[0047] 5. Start the grid simulator 3 to provide an AC voltage to the sampling board 66, and observe whether the values of the three-phase grid voltage display 15 and three-phase inverter voltage display on the debugging interface of the host computer 8 are within the qualified range;

[0048] 6. Observe whether the state of the 10-channel dry contact status display 18 on the debugging interface of the host computer 8 is closed. Pull out the short wire 5, and then observe whether the state of the 10-channel dry contact status display 18 on the debugging interface of the host computer 8 changes to open;

[0049] 7. Operate the 10-channel relay control button 19 on the debugging interface of the host computer 8, and observe whether the relay on the sampling board 6 is closed;

[0050] 8. Operate the 18-channel PWM drive 20 on the debugging interface of the host computer 8, and observe whether the LED lights on the display board 10 flash;

[0051] 9. Observe whether the state of the 6-channel fault display 21 on the debugging interface of the host computer 8 is a fault;

[0052] 10. Start the signal generator 9 to provide an AC current simulation signal to the control board 7 to be tested, and observe whether the value of the three-phase inverter current display on the debugging interface of the host computer 8 is within the qualified range;

[0053] 11. Record relevant test data.

[0054] As Figure 4 shown, the flow of the debugging software of the host computer 8 in the present utility model is as follows:

[0055] 1. Power on and observe whether the temperature is qualified;

[0056] 2. Start the battery simulator 2 to output 1300V, and judge whether the battery, bus, and half bus voltages of the host computer 8 are qualified;

[0057] 3. Start the grid simulator 3 to output 690V, and determine whether the inverter grid voltage of the host computer 8 is qualified and whether the dry contact state of the host computer 8 is closed;

[0058] 4. Determine whether the dry contact state of the host computer 8 is open;

[0059] 5. Determine whether the relay of the sampling board 6 is closed;

[0060] 6. Determine whether the indicator light of the display board 10 is flashing;

[0061] 7. Determine whether the IGBT state of the host computer 8 is faulty;

[0062] 8. Start the signal generator 9 to output 1V, and determine whether the inverter current of the host computer 8 is qualified.

[0063] As Figure 5 shown, it is a schematic diagram of the test results of the temperature, voltage, current, digital input / output, and PWM output functions of the control board test platform of the present invention for the control board 7 to be tested. It can be seen from the figure that the test device of the present invention can measure the relevant data of the control board 7 to be tested.

[0064] In summary, the present invention provides a control board test platform, including: a sampling board, a short wire, a fixed resistor, a grid simulator, and a host computer; the sampling board includes a first dry contact state interface, a first temperature sampling interface, a first grid and inverter voltage sampling interface; the short wire is connected to the first dry contact state interface; the fixed resistor is connected to the first temperature sampling interface; the grid simulator is connected to the first grid and inverter voltage sampling interface; the sampling board is also connected to the control board to be tested, and the host computer is connected to the control board to be tested. The actual signal can be simulated for the circuit board to be tested, or the set digital signal can be input. It can not only judge the response of the circuit board to be tested to the actual input signal, but also judge the response of the circuit board to be tested to the strictly required digital signal. Moreover, the structure of the present invention is simple and the cost is low, which can improve the test efficiency.

[0065] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A control panel test platform, characterized in that: include: Sampling board, short-circuit wire, fixed resistor, power grid simulator and host computer; The sampling board includes a first dry contact state interface, a first temperature sampling interface, a first power grid, and an inverter voltage sampling interface; the short-circuit wire is connected to the first dry contact state interface; the fixed resistor is connected to the first temperature sampling interface; the power grid simulator is connected to the first power grid and the inverter voltage sampling interface; The sampling board is also connected to the control board to be tested, and the host computer is connected to the control board to be tested.

2. The control panel test platform according to claim 1, characterized in that: It also includes a battery simulator; the sampling board also includes a first battery and a bus voltage sampling interface; the battery simulator is connected to the first battery and the bus voltage sampling interface.

3. The control panel test platform according to claim 1, characterized in that: It also includes a switching power supply; the sampling board also includes a power supply interface; the switching power supply is connected to the power supply interface.

4. The control panel test platform according to claim 1, characterized in that: It also includes a signal generator connected to the current sampling interface of the control board to be tested.

5. The control panel test platform according to claim 1, characterized in that: It also includes a display panel connected to the IGBT drive interface of the control panel to be tested.

6. The control panel test platform according to claim 1, characterized in that: The sampling board also includes a first relay control interface, which is connected to a second relay control interface of the control board to be tested.

7. The control panel test platform according to claim 1, characterized in that: The sampling board also includes a second dry contact status interface, and the second dry contact status interface is connected to the third dry contact status interface of the control board to be tested.

8. The control panel test platform according to claim 1, characterized in that: The sampling board also includes a second temperature sampling interface, which is connected to a third temperature sampling interface of the control board to be tested.

9. The control panel test platform according to claim 1, characterized in that: The sampling board also includes a second power grid and an inverter voltage sampling interface, which are connected to a third power grid and an inverter voltage sampling interface of the control board to be tested.

10. The control panel test platform according to claim 1, characterized in that: The sampling board also includes a second battery and a bus voltage sampling interface, which are connected to a third battery and a bus voltage sampling interface of the control board to be tested.