Automatic testing device for efficiency of power supply module
By designing an automatic testing device, using electronic load and data acquisition modules to automatically change and measure current and voltage, the existing power module efficiency testing methods are solved, and a more efficient testing process is achieved.
Patent Information
- Application Number
- CN202420482010.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-03-12
AI Technical Summary
The efficiency testing methods of existing power modules are cumbersome and the testing time is long.
Design an automatic testing device, including electronic load, data acquisition module, precision resistor, power supply module and upper computer, change the current of the power module through electronic load, and use the data acquisition module and precision resistor to obtain voltage and current data, and the upper computer calculates and Demonstrate the efficiency of the power module.
It simplifies the cumbersomeness of power module efficiency testing, reduces test time, and improves work efficiency.
Smart Images
Figure CN222529461U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power module efficiency testing, in particular to an automatic testing device for power module efficiency. Background Art
[0002] At present, the efficiency test of power modules basically requires manual adjustment of electronic loads and the use of multimeters to measure input voltage, input current, and output voltage. In general, the efficiency test needs to test the efficiency of the power module under multiple output current values from small to large. The original test method is cumbersome and takes a long time. Utility Model Content
[0003] In view of this, the utility model provides an automatic testing device for power module efficiency to solve the technical problems that the current testing method is complicated and the testing time is long.
[0004] The utility model provides an automatic test device for power module efficiency, which comprises: an electronic load, a data acquisition module, a resistor, a power module and a host computer; the data acquisition module is respectively connected to the host computer, the resistor, the power module and the electronic load, and is used for obtaining the voltage of the resistor, the input voltage, and the output voltage of the power module, and outputting them to the host computer; the electronic load is respectively connected to the power module and the host computer, and is used for receiving instructions from the host computer and changing the current of the power module; the host computer is used for determining the power module efficiency of the current module through the voltage of the resistor, the input voltage, the output voltage and the output current.
[0005] In an optional embodiment, the above device further includes: a first acquisition line and a second acquisition line;
[0006] The data acquisition module is connected to one end of the resistor through a first acquisition line and to the other end of the resistor through a second acquisition line, and is used to acquire the voltage of the resistor.
[0007] In an optional implementation, the host computer is also used to display the power module efficiency corresponding to each current in the form of a chart.
[0008] In an optional implementation, the resistor is a precision resistor.
[0009] In an optional embodiment, the electronic load is a programmable electronic load.
[0010] In an optional embodiment, the above-mentioned device also includes: a first communication line; the host computer and the data acquisition module are connected through the first communication line.
[0011] In an optional embodiment, the above-mentioned device also includes a second communication line; the host computer and the electronic load are connected through the second communication line.
[0012] In an optional implementation, the data acquisition module is a data acquisition instrument.
[0013] In an optional embodiment, the above device further includes: a third acquisition line; the data acquisition module is connected to the positive input terminal of the power module through the third acquisition line.
[0014] In an optional embodiment, the above device further includes: a fourth acquisition line; the data acquisition module is connected to the positive output terminal of the power module through the fourth acquisition line
[0015] The utility model provides an automatic test device for power module efficiency, which comprises: an electronic load, a data acquisition module, a resistor, a power module and a host computer; the data acquisition module is respectively connected to the host computer, the resistor, the power module and the electronic load, and is used to obtain the voltage of the resistor, the input voltage, and the output voltage of the power module, and output them to the host computer; the electronic load is respectively connected to the power module and the host computer, and is used to receive instructions from the host computer and change the current of the power module; the host computer is used to determine the power module efficiency of the current module through the voltage of the resistor, the input voltage, the output voltage and the output current.
[0016] The automatic testing device for the power module efficiency provided in the present embodiment can change the current of the power module through an electronic load. When the electronic load changes the current, the power module efficiency of the power module is determined by the voltage of the resistor, the resistance value of the resistor, the input voltage, and the output voltage of the power module. Compared with the method of manually adjusting the electronic load and using a multimeter to measure the input voltage, input current, and output voltage, the present embodiment can simplify the tediousness of the power module efficiency test, reduce the test time, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a structural block diagram of an automatic testing device for power module efficiency according to an embodiment of the utility model. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0020] Based on relevant technologies, the efficiency test of power modules currently basically requires manual adjustment of electronic loads and the use of multimeters to measure input voltage, input current, and output voltage. In general, efficiency testing requires testing the efficiency of the power module at multiple output current values from small to large. The original test method is cumbersome and takes a long time to test.
[0021] Based on this, the present embodiment provides an automatic testing device for the efficiency of a power module, which can change the current of the power module through an electronic load. When the electronic load changes the current, the power module efficiency of the power module is determined by the voltage of the resistor, the resistance value of the resistor, the input voltage, and the output voltage between the power module and the electronic load. Compared with manually adjusting the electronic load and using a multimeter to measure the input voltage, input current, and output voltage, the present embodiment can simplify the tediousness of the power module efficiency test, reduce the test time, and improve work efficiency.
[0022] In this embodiment, a device for automatically testing the efficiency of a power module is provided. Figure 1 As shown, the device includes: an electronic load 105, a data acquisition module 102, a resistor 104, a power module 103 and a host computer 101; the data acquisition module 102 is respectively connected to the host computer 101, the resistor 104, the power module 103 and the electronic load 105, and is used to obtain the voltage of the resistor 104, the input voltage, and the output voltage of the power module 103, and output them to the host computer 101; the electronic load 105 is respectively connected to the power module 103 and the host computer 101, and is used to receive instructions from the host computer 101 and change the current of the power module 103; the host computer 101 is used to obtain the power module efficiency of the power module 103 through the voltage of the resistor 104, the input voltage and the power module 103.
[0023] The host computer 101 can be used to represent a computer or single-chip microcomputer that directly sends operation instructions, and can be a user operation interactive interface and display feedback data to the user, wherein the host computer 101 can be a computer, a mobile phone, a tablet, a panel, a touch screen, etc., and can also refer to an industrial computer, a workstation, etc., which is not specifically limited here. In addition, the host computer 101 can also be software for completing the operation interaction of the host computer 101, such as equipment debugging and testing software, simulation test software, production test software, industrial control configuration software, etc.
[0024] The power module efficiency refers to the ratio of input power to output power, usually expressed as a percentage. A high-efficiency power module 103 can convert input power into useful output power to the maximum extent possible, reducing energy loss and waste.
[0025] The data acquisition module 102 is used to collect information of each device in the automatic test device of the power module efficiency. Specifically, the data acquisition module 102 is connected to the host computer 101, the resistor 104, the power module 103 and the electronic load 105 respectively, and is used to obtain the voltage of the resistor 104, the input voltage, and the output voltage of the power module 103. After the data acquisition module 102 collects the above data, it can be sent to the host computer 101, and then the host computer 101 determines the power module efficiency of the current module through the voltage of the resistor 104, the input voltage, the output voltage and the power supply.
[0026] Preferably, the power module efficiency can be determined by the formula: VOUT*IOUT / VIN / (V1 / R); wherein VOUT is the output voltage, IOUT is the current, VIN is the input voltage, V1 is the voltage of the resistor 104, and R is the resistance value of the resistor 104. Specifically, the output power can be determined by VOUT*IOUT, the input power can be determined by VIN*(V1 / R), and then the power module efficiency corresponding to the current is determined by dividing the output power by the input power.
[0027] The automatic testing device for power module efficiency provided in the present embodiment can change the current of the power module 103 through the electronic load 105. When the electronic load 105 changes the current, the power module efficiency of the power module 103 is determined by the voltage of the resistor 104, the resistance value of the resistor 104, the input voltage, and the output voltage between the power module 103 and the electronic load 105. Compared with the method of manually adjusting the electronic load 105 and using a multimeter to measure the input voltage, input current, and output voltage, the present embodiment can simplify the tediousness of the power module efficiency test, reduce the test time, and improve work efficiency.
[0028] Combination Figure 1As shown, in an optional embodiment, the above-mentioned device also includes: a first acquisition line 107 and a first acquisition line 108; the data acquisition module 102 is connected to one end of the resistor 104 through the first acquisition line 107, and is connected to the other end of the resistor 104 through the first acquisition line 108, for collecting the voltage of the resistor 104.
[0029] In the process of data acquisition module 102 collecting voltage, the specific type of acquisition line may vary depending on the model, purpose and acquisition environment requirements of different data acquisition modules 102. For example, some acquisition instruments may use acquisition lines with specific insulating materials and shielding layers to ensure that voltage signals can be accurately and stably collected under high voltage or strong electromagnetic interference environments. At the same time, the length, diameter and other parameters of the acquisition line may also need to be selected according to the specific application scenario to meet the requirements of acquisition accuracy and real-time performance.
[0030] Specifically, the types of the first acquisition line 107 and the first acquisition line 108 may be the same or different. The types of acquisition lines are exemplified below;
[0031] Coaxial cable: This type of acquisition cable is often used to acquire high-frequency signals, such as radio frequency signals. Coaxial cable has a central conductor, an insulation layer, a shielding layer, and an outer sheath, which can effectively reduce electromagnetic interference and signal attenuation. In high-frequency voltage acquisition systems, coaxial cable can ensure the integrity and stability of the signal.
[0032] Twisted pair: Twisted pair is a common type of acquisition line, especially in the acquisition of low-frequency signals. Its two wires are twisted together in a certain way, which can effectively resist external electromagnetic interference. Twisted pair is relatively cheap and suitable for general voltage acquisition tasks.
[0033] Fiber optic: In voltage acquisition environments that require extremely high accuracy and stability, such as high-voltage measurement in power systems, fiber optic acquisition lines may be an ideal choice. Fiber optics use optical signals for transmission, are not affected by electromagnetic interference, and have fast transmission speeds and high accuracy.
[0034] High temperature resistant cables: When collecting voltage in a high temperature environment, cables that can withstand high temperatures are required. Such cables usually use special insulation materials and sheaths to ensure stable electrical performance at high temperatures.
[0035] Shielded cable: Shielded cable is a good choice for situations where electromagnetic interference needs to be reduced. It effectively blocks the interference of external electromagnetic fields by adding a metal shielding layer to the outside of the cable, thereby improving the accuracy of voltage collection.
[0036] It should be noted that the types of acquisition lines are not limited to the above types, which are only used as examples for illustration, and the specific types of acquisition lines may be implemented by those skilled in the art.
[0037] Specifically, the data acquisition module 102 is connected to one end of the resistor 104 through a first acquisition line 107 , and is connected to the other end of the resistor 104 through a first acquisition line 108 , and is used to acquire the voltage of the resistor 104 and the resistance value of the resistor 104 .
[0038] The automatic test device for the efficiency of the power module provided in this embodiment connects the two ends of the resistor 104 respectively through two independent acquisition lines. The data acquisition module 102 can accurately acquire the voltage difference between the two ends of the resistor 104, thereby helping to accurately calculate the resistance value of the resistor 104 and improve the measurement accuracy.
[0039] In addition, the design of two acquisition lines allows the data acquisition module 102 to be easily connected to different resistors 104 without complicated changes to the module. This design improves the flexibility and configurability of the system, allowing the data acquisition module 102 to adapt to different application scenarios.
[0040] In addition, the design of two acquisition lines reduces the risk of single point failure. Even if one of the acquisition lines fails, the other acquisition line can still maintain normal operation, ensuring continuous data acquisition and transmission. This helps to improve the stability and reliability of the system.
[0041] In an optional implementation, the resistor 104 may be a precision resistor.
[0042] Precision resistors are electronic components that provide high-precision resistance values and have the characteristics of high accuracy, high stability and low-temperature drift rate.
[0043] The automatic test device for power module efficiency provided in this embodiment has a very high resistance value accuracy of precision resistors, which can usually reach an accuracy level of ±0.01% or even higher. In the circuit, the precision resistors can more accurately control the current and voltage, thereby improving the performance and stability of the entire circuit.
[0044] In addition, the temperature coefficient (TCR) value of precision resistors is low, and their resistance value changes less with temperature. Therefore, in high or low temperature environments, precision resistors can maintain a relatively stable resistance value 104 and avoid circuit performance fluctuations caused by temperature changes.
[0045] In addition, the temperature drift characteristics of precision resistors (the degree to which the resistance value changes with temperature) are very good, and can achieve very low temperature drift values, such as ±1ppm / ℃ or even lower. This makes precision resistors perform well in applications that require high precision and stability. The noise index of precision resistors is usually low, which means that in the circuit, the noise interference generated by precision resistors is small, which is conducive to improving the signal-to-noise ratio and the performance of the overall circuit.
[0046] In an optional implementation, the host computer 101 is further configured to display the power module efficiency corresponding to each current in a graphical form.
[0047] Specifically, the host computer 101 can communicate with the power module 103 to obtain parameters such as the input current, output voltage, and output current of the power module 103 in real time. Based on these parameters, the host computer 101 can calculate the efficiency of the power module 103 and organize the efficiency data corresponding to each current into the form of a chart. In terms of chart display, the host computer 101 can use a variety of chart types, such as a line chart, a bar chart, or a scatter chart, so that the user can more intuitively understand the efficiency change trend and distribution of the power module 103. At the same time, the host computer 101 can also provide rich interactive functions, such as zooming, dragging, selecting data points, etc., so that the user can more deeply analyze and compare the efficiency data under different current conditions.
[0048] Through the chart display function of the host computer 101, the user can quickly find the efficiency peak or valley of the power module 103 under different current conditions, and then adjust the working parameters of the power module 103 or optimize the circuit design to improve the efficiency of the power module 103. This is of great significance for improving the energy efficiency and stability of the entire system.
[0049] In addition, the host computer 101 can also save the efficiency data of the power module 103 as files, so that users can perform subsequent data processing and analysis. These files can be in common text format or spreadsheet format, which is convenient for users to use various data processing software for further analysis and mining.
[0050] In an optional implementation, the electronic load 105 is a programmable electronic load.
[0051] A programmable electronic load is a load instrument that uses a high-performance chip to provide high-precision current, voltage, and power regulation to meet the needs of different tests and applications.
[0052] The automatic test device for power module efficiency provided in this embodiment has a programmable electronic load 105 with high reliability and stability, and the control system adopted therein can simulate various currents more accurately, thereby improving the reliability of the test.
[0053] Combination Figure 1 As shown, in an optional embodiment, the above-mentioned device also includes: a first communication line 109 and a second communication line 111; the host computer 101 is connected to the data acquisition module 102 through the first communication line 109; the host computer 101 is connected to the electronic load 105 through the second communication line 111.
[0054] First, the first communication line 109 connects the host computer 101 and the data acquisition module 102. Among them, the data acquisition module 102 is responsible for obtaining various operating parameters of the power module 103, the resistor 104, and the electronic load 105, such as current, voltage, etc. Through the first communication line 109, the host computer 101 can receive the data sent by the data acquisition module 102 in real time, and process, analyze and display these data. At the same time, the host computer 101 can also send instructions to the data acquisition module 102 through this communication line to control the frequency, accuracy and other parameters of the data collected to meet the needs of different tests and applications.
[0055] Secondly, the second communication line 111 connects the host computer 101 and the electronic load 105. As a device for simulating real load conditions, the electronic load 105 plays an important role in the test of the power module 103. Through the second communication line 111, the host computer 101 can realize remote control and monitoring of the electronic load 105. For example, the host computer 101 can set the working mode of the electronic load 105 (such as constant current, constant voltage, etc.), adjust the size and change rate of the load, etc., to simulate different test scenarios. At the same time, the host computer 101 can also receive the working status and data of the electronic load 105 in real time for subsequent analysis and processing.
[0056] In an optional implementation, the data acquisition module 102 is a data acquisition instrument.
[0057] The data acquisition instrument is a device used to measure, record and analyze various physical quantities (such as the above-mentioned input voltage, the above-mentioned output voltage, the voltage of the resistor 104, etc.).
[0058] The automatic testing device for power module efficiency provided in this embodiment can accurately obtain the voltage of resistor 104, input voltage, output voltage and power supply due to the high precision and high reliability of the data acquisition instrument, thereby ensuring the accuracy of the power module efficiency.
[0059] Combination Figure 1 As shown, in an optional embodiment, the above-mentioned device also includes: a third acquisition line 106 and a fourth acquisition line 110; the data acquisition module 102 is connected to the positive input terminal of the power module 103 through the third acquisition line 106; the data acquisition module 102 is connected to the positive output terminal of the power module 103 through the fourth acquisition line 110.
[0060] Combination Figure 1 As shown, the positive electrode of the power supply of the input voltage is connected to one end of the third acquisition line 106, the other end of the third acquisition line 106 is connected to the data acquisition module 102, and the negative electrode of the power supply of the input voltage is grounded. The data acquisition module 102 is connected to the positive output end of the power module 103 through the fourth acquisition line 110. Through the combined use of the third acquisition line 106 and the fourth acquisition line 110, the data acquisition module 102 can fully and accurately obtain the input and output data of the power module 103, and then calculate the efficiency of the power module 103.
[0061] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. An automatic test device for power module efficiency, characterized in that: include: Electronic load, data acquisition module, resistor, power module and host computer; The data acquisition module is connected to the host computer, the resistor, the power module and the electronic load respectively, and is used to obtain the resistor voltage, the input voltage, the output voltage of the power module, and output it to the host computer; The electronic load is connected to the power module and the host computer respectively, and is used to receive instructions from the host computer and change the current of the power module; The host computer is used to determine the power module efficiency of the current module through the voltage of the resistor, the input voltage, the output voltage and the output current.
2. The automatic testing device for power module efficiency according to claim 1, characterized in that: Also includes: a first acquisition line and a second acquisition line; The data acquisition module is connected to one end of the resistor through a first acquisition line and to the other end of the resistor through a second acquisition line, and is used to acquire the voltage of the resistor.
3. The automatic testing device for power module efficiency according to claim 1, characterized in that: The host computer is also used to display the power module efficiency corresponding to each current in the form of a chart.
4. The automatic testing device for power module efficiency according to any one of claims 1 to 3, characterized in that: The resistor is a precision resistor.
5. The automatic testing device for power module efficiency according to any one of claims 1 to 3, characterized in that: The electronic load is a programmable electronic load.
6. The automatic testing device for power module efficiency according to claim 1, characterized in that: Also includes: First line of communication; The host computer is connected to the data acquisition module via a first communication line.
7. The automatic testing device for power module efficiency according to claim 1, characterized in that: Also included is a second communication line; The host computer and the electronic load are connected via a second communication line.
8. The automatic testing device for power module efficiency according to claim 1, characterized in that: The data acquisition module is a data acquisition instrument.
9. The automatic testing device for power module efficiency according to claim 1, characterized in that: Also includes: The third acquisition line; The data acquisition module is connected to the positive input terminal of the power module through a third acquisition line.
10. The automatic testing device for power module efficiency according to claim 1, characterized in that: Also includes: The fourth acquisition line; The data acquisition module is connected to the positive output terminal of the power module through a fourth acquisition line.