Power supply load capacity testing device and method

Abstract

The present disclosure relates to a testing device and method for the load carrying capacity of a power supply, and the testing device includes: a control module, at least one load simulation module and at least one detection module. The control module is used to output a conduction control signal; the control end of the load simulation module is connected to the control module, and the load simulation module is correspondingly connected to at least one target power supply of the power supply network; the load simulation module is used to adjust the output current of the target power supply according to the conduction control signal; the detection end of the detection module is connected to the target power supply, and the detection module is used to detect the stability parameters of the target power supply. The present disclosure adjusts the current output from the target power supply to the load simulation module according to the conduction control signal through the load simulation module, so as to simulate the operation of the target power supply when connected to different loads. And the stability parameters of the target power supply are detected by the detection module when the target power supply outputs different currents, so as to detect the stability of the target power supply when it outputs different currents.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power supply testing, and in particular to a device and method for testing the load capacity of a power supply. Background Art

[0002] In recent years, semiconductor equipment has developed rapidly, and electron beam defect detection and line width measurement technology have had a very large application space and have also developed rapidly.

[0003] The electron beam needs to be controlled by a series of drivers to achieve the expected application effect. In order to ensure the control effect of the driver on the electron beam and improve the performance of the circuit, a more stable power supply is needed to power it. Therefore, how to simulate the operation of the power supply connected to different loads and how to effectively test the stability of the power supply when it outputs currents of different amplitudes and frequencies have become technical problems that technicians in this field need to solve urgently. Summary of the invention

[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a device and method for testing the load capacity of a power supply.

[0005] In a first aspect, the present disclosure provides a device for testing the load carrying capacity of a power supply, comprising: a control module, at least one load simulation module, and at least one detection module. The control module is used to output a conduction control signal; the control end of the load simulation module is connected to the control module, and the load simulation module is correspondingly connected to at least one target power supply of a power supply network; the load simulation module is used to adjust the output current of the target power supply according to the conduction control signal; the detection end of the detection module is connected to the target power supply, and the detection module is used to detect the stability parameter of the target power supply.

[0006] Optionally, the load simulation module includes a switch unit; a control end of the switch unit is connected to the control module, a first end of the switch unit is connected to the target power supply, and a second end of the switch unit is grounded; the switch unit is used to adjust the conduction amplitude according to the conduction control signal.

[0007] Optionally, the switching unit includes a transistor; the control end of the transistor is connected to the control module, the first pole of the transistor is connected to the target power supply, and the second pole of the transistor is grounded; the transistor is used to adjust the amplitude and frequency of the output current according to the conduction control signal.

[0008] Optionally, the transistor is a MOS tube; the gate of the MOS tube is connected to the control module, the first pole of the MOS tube is connected to the target power supply, and the second pole of the MOS tube is grounded; wherein the conduction control signal is a voltage signal, and the MOS tube is used to adjust the amplitude of the output current according to the voltage amplitude of the conduction control signal and adjust the frequency of the output current according to the frequency of the conduction control signal.

[0009] Optionally, the load simulation module further includes a current limiting unit; the first end of the switch unit is connected to the target power supply through the current limiting unit.

[0010] Optionally, the control module includes a controller, at least one digital-to-analog conversion unit and at least one amplification unit; at least one output end of the controller is connected to the digital-to-analog conversion unit, and the output end of the digital-to-analog conversion unit is connected to the control end of the load simulation module through the amplification unit; at least one output end of the controller is used to output a start control signal; the start control signal is converted into a conduction control signal through the digital-to-analog conversion unit and the amplification unit.

[0011] Optionally, the testing device also includes a display module; the display module is connected to the control module; the control module is also used to send the signal frequency and signal amplitude corresponding to the start control signal to the display module.

[0012] In a second aspect, the present disclosure also provides a method for testing the load capacity of a power supply, which is applied to the device for testing the load capacity of a power supply of the first aspect; the testing method comprises: outputting different conduction control signals to at least one load simulation module; wherein the current amplitude or current frequency of the output current corresponding to any two conduction control signals is different; and when outputting each conduction control signal, obtaining the stability parameters of the target power supply corresponding to the load simulation module.

[0013] Optionally, the method further includes: obtaining a stability parameter of a first power supply when outputting each conduction control signal; wherein the first power supply is any power supply in the power supply network that is located on the same power supply branch as the target power supply.

[0014] Optionally, the method further includes: obtaining stability parameters of the second power supply when the target power supply outputs different currents; wherein the second power supply is any power supply in the power supply network that is located on a different power supply branch from the target power supply.

[0015] The present disclosure provides a test device and method for the load carrying capacity of a power supply, wherein the test device comprises: a control module, at least one load simulation module and at least one detection module. The load simulation module is connected to at least one target power supply in a power supply network. During the load test process for the power supply network, the load simulation module adjusts the current outputted by the target power supply to the load simulation module according to the conduction control signal outputted by the control module, thereby simulating the operation of the target power supply when connected to different loads. The detection module is connected to the output end of the target power supply, and the detection module can determine the stability parameters of the target power supply when connected to different loads by detecting the stability parameters of the target power supply when outputting different currents, thereby determining the stability of the target power supply when using different loads. In addition, the detection module can also be used to connect to other power supplies in the power supply network except the target power supply, and detect the fluctuation of the connected power supply, thereby realizing the detection of the influence of the target power supply on other power supplies in the power supply network when the target power supply outputs different currents, that is, when the target power supply is connected to different loads, thereby realizing the detection of the stability of all power supplies in the power supply network when the target power supply is connected to different loads, and realizing the effective test of the stability of the entire power supply network under load. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a device for testing the load capacity of a power supply provided in an embodiment of the present disclosure.

[0018] Figure 2 A schematic diagram of the structure of another device for testing the load capacity of a power supply provided in an embodiment of the present disclosure.

[0019] Figure 3 A flowchart of a method for testing the load capacity of a power supply provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiment is only for providing a better understanding of the application by illustrating the example of the application.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0022] The embodiment of the present disclosure provides a test device for the load carrying capacity of a power supply, comprising: a control module, at least one load simulation module and at least one detection module. The control module is used to output a conduction control signal; the control end of the load simulation module is connected to the control module, and the load simulation module is correspondingly connected to at least one target power supply of the power supply network; the load simulation module is used to adjust the output current of the target power supply according to the conduction control signal; the detection end of the detection module is connected to the target power supply, and the detection module is used to detect the stability parameter of the target power supply.

[0023] For example, Figure 1 A schematic diagram of a structure of a power supply load capacity testing device provided in an embodiment of the present disclosure, such as Figure 1 As shown, at least one load simulation module includes a first load simulation module 101, a second load simulation module 102, a third load simulation module 103 and a fourth load simulation module 104. At least one detection module includes a first detection module 201, a second detection module 202, a third detection module 203 and a fourth detection module 204. The power supply network includes a first target power supply 401, a second target power supply 402, a third target power supply 403 and a fourth target power supply 404.

[0024] The control module 300 is respectively connected to the control end of the first load simulation module 101, the control end of the second load simulation module 102, the control end of the third load simulation module 103, and the control end of the fourth load simulation module 104. The first load simulation module 101 is connected to the output end of the first target power supply 401, the second load simulation module 102 is connected to the output end of the second target power supply 402, the third load simulation module 103 is connected to the output end of the third target power supply 403, and the fourth load simulation module 104 is connected to the output end of the fourth target power supply 404. The output end of the first target power supply 401 is also connected to the first detection module 201, the output end of the second target power supply 402 is also connected to the second detection module 202, the output end of the third target power supply 403 is also connected to the third detection module 203, and the output end of the fourth target power supply 404 is also connected to the fourth detection module 204.

[0025] In the process of testing the load carrying capacity of the first target power supply 401, the control module 300 outputs a conduction control signal to the first load simulation module 101, controls the first load simulation module 101 to adjust the first target power supply 401 to output different currents, and detects the stability parameters of the first target power supply 401 under different output current conditions through the first detection module 201, and finally determines the specific stability of the first target power supply 401 according to the stability parameters, for example, whether the first target power supply 401 is stable under all output current conditions, or whether the first target power supply 401 is stable under certain output current conditions. Since the load simulation module can adjust the output current of the corresponding connected target power supply according to the conduction control signal output by the control module 300, and the target power supply will output currents of different amplitudes and frequencies when connected to different loads during actual operation, the present disclosure can simulate the current conditions of the target power supply when connected to different loads through the load simulation module, and thus can simulate the operation conditions of the target power supply when connected to different loads. In addition, the detection module can determine the stability parameters of the target power supply when it is connected to different loads by detecting the stability parameters of the target power supply when it outputs different currents, and further determine the stability of the target power supply when it uses different loads, thereby realizing the detection of the stability of the target power supply when it is connected to different loads.

[0026] The connection relationship between the first target power supply 401 and the second target power supply 402, the third target power supply 403 and the fourth target power supply 404 is that the first target power supply 401 is connected to the second target power supply 402 and the third target power supply 403 respectively, and the third target power supply 403 is connected to the fourth target power supply 404. In the process of testing the load capacity of the third target power supply 403, the influence of the third target power supply 403 on the operation of the first target power supply 401, the second target power supply 402 and the fourth target power supply 404 during the load operation can also be tested. The control module 300 only controls the third load simulation module 103 to be turned on, and the first load simulation module 101, the second load simulation module 102 and the fourth load simulation module 104 are all kept in the off state, the first detection module 201 detects the stability parameters of the first target power supply 401, the second detection module 202 detects the stability parameters of the second target power supply 402, and the fourth detection module 204 detects the stability parameters of the fourth target power supply 404. By detecting the second target power supply 402 through the second detection module 202 and detecting the fourth target power supply 404 through the fourth detection module 204, the coupling influence of the third target power supply 403 on other power supplies in the same branch can be tested. By detecting the second target power supply 402 through the second detection module 202, the influence of the third target power supply 403 on the stability of other power supplies in different branches can be tested.

[0027] Therefore, the present disclosure can detect the influence of the target power supply on other power supplies in the power supply network when the target power supply outputs different currents, that is, when the target power supply is connected to different loads, thereby detecting the stability of all power supplies in the power supply network when the target power supply is connected to different loads, and effectively testing the stability of the entire power supply network under load. The present disclosure can also simultaneously start any one or more of the first load simulation module 101, the second load simulation module 102, the third load simulation module 103 and the fourth load simulation module 104 through the control module 300, thereby simulating the operation of any one or more power supplies in the power supply network when connected to the load, and respectively detecting the stability parameters of each target power supply through each detection module, so as to detect the stability of the power supply network under any working condition.

[0028] It should be noted that the detection module may be, for example, an oscilloscope, and the stability parameter may be a waveform parameter of the target power supply displayed by the oscilloscope. The specific detection module may be set according to actual conditions and is not specifically limited here.

[0029] It should be noted that testing the load capacity of the first target power supply 401 and the third target power supply 403 is only an example. The present disclosure can also test the load capacity of other target power supplies in the power network. The specific target power supply to be tested needs to be selected according to actual conditions and is not specifically limited here.

[0030] It should be noted that at least one load simulation module includes a first load simulation module 101, a second load simulation module 102, a third load simulation module 103 and a fourth load simulation module 104. At least one detection module includes a first detection module 201, a second detection module 202, a third detection module 203 and a fourth detection module 204. The power supply network includes a first target power supply 401, a second target power supply 402, a third target power supply 403 and a fourth target power supply 404, which are all examples. The specific number of modules needs to be set according to actual conditions and is not specifically limited here.

[0031] In some embodiments, the load simulation module includes a switch unit; the control end of the switch unit is connected to the control module, the first end of the switch unit is connected to the target power supply, and the second end of the switch unit is grounded; the switch unit is used to adjust the conduction amplitude according to the conduction control signal.

[0032] Specifically, the control module adjusts the conduction amplitude of the switch unit by outputting a conduction control signal to the control end of the switch module. Since the current parameter of the target power supply when outputting current through the switch unit can change according to the change of the conduction amplitude of the switch unit, the present disclosure adjusts the output current of the target power supply by adjusting the conduction amplitude of the switch module. Since the most important change of the target power supply when connecting different loads is the change of the output current of the target power supply, the present disclosure can simulate the operation of the target power supply when connecting different loads.

[0033] In some embodiments, the switch unit includes a transistor; the control end of the transistor is connected to the control module, the first pole of the transistor is connected to the target power supply, and the second pole of the transistor is grounded; the transistor is used to adjust the amplitude and frequency of the output current according to the conduction control signal.

[0034] Specifically, the control module adjusts the conduction amplitude of the transistor by outputting a conduction control signal to the control end of the transistor. Since the amplitude and frequency of the current when the target power supply outputs the current through the switch unit can change according to the change of the conduction amplitude of the transistor, the present disclosure adjusts the conduction amplitude of the transistor to adjust the amplitude and frequency of the output current of the target power supply. Since the most important change of the target power supply when connecting different loads is the change of the output current of the target power supply, the present disclosure can simulate the operation of the target power supply when connecting different loads.

[0035] In some embodiments, the transistor is a MOS tube; the gate of the MOS tube is connected to the control module, the first electrode of the MOS tube is connected to the target power supply, and the second electrode of the MOS tube is grounded; wherein the conduction control signal is a voltage signal, and the MOS tube is used to adjust the amplitude of the output current according to the voltage amplitude of the conduction control signal and adjust the frequency of the output current according to the frequency of the conduction control signal.

[0036] Specifically, the second electrode of the MOS tube is the source electrode of the MOS tube, and the source electrode of the MOS tube is grounded, so the gate-source voltage of the MOS tube is related to the conduction control signal output by the control module, so when the target power supply outputs current through the MOS tube, the amplitude of the output current is related to the voltage amplitude of the conduction control signal, and the frequency of the output current is related to the frequency of the conduction control signal. Therefore, the present disclosure adjusts the voltage amplitude and frequency of the conduction control signal output to the gate of the MOS tube through the control module, thereby realizing the adjustment of the amplitude and frequency of the output current of the target power supply, and because the most important change of the target power supply when connecting different loads is the change of the output current of the target power supply, the present disclosure can realize the simulation of the operation of the target power supply when connecting different loads.

[0037] In some embodiments, the load simulation module further includes a current limiting unit; and the first end of the switch unit is connected to the target power supply through the current limiting unit.

[0038] Specifically, in order to prevent the target power supply from outputting an excessively large current when the switch unit is turned on, thereby damaging the switch unit, the present disclosure connects a current limiting unit between the switch unit and the target power supply, thereby protecting the switch unit.

[0039] In some embodiments, the control module includes a controller, at least one digital-to-analog conversion unit and at least one amplification unit; at least one output end of the controller is connected to the digital-to-analog conversion unit, and the output end of the digital-to-analog conversion unit is connected to the control end of the load simulation module through the amplification unit; at least one output end of the controller is used to output a start control signal; the start control signal is converted into a conduction control signal through the digital-to-analog conversion unit and the amplification unit.

[0040] Exemplarily, the digital-to-analog conversion unit and the amplification unit are set in a one-to-one correspondence. At least one output end of the controller can generate a pulse of 0 to 1 MHz as a start control signal to be output to the digital-to-analog conversion unit. The start control signal is a digital signal. The digital-to-analog conversion unit converts the received start control signal from a digital signal to an analog signal, and then converts it into a conduction control signal after amplification by the amplification unit. The conduction control signal is a voltage signal, and the output current of the target power supply can be adjusted through the load simulation module, thereby simulating the operation of the target power supply when connected to different loads.

[0041] In some embodiments, the detection device further includes a display module; the display module is connected to the control module; the control module is further used to send the signal frequency and signal amplitude corresponding to the start control signal to the display module.

[0042] Specifically, the signal frequency and signal amplitude corresponding to the start control signal generated by the control module can be sent to the display module, and the display module can display these data in real time to facilitate the test personnel to perform real-time detection of the data during the test process.

[0043] Figure 2 Another power supply load capacity testing device provided in the embodiment of the present disclosure is as follows: Figure 2As shown, the test device includes a controller 310, a first digital-to-analog conversion unit 321, a second digital-to-analog conversion unit 322, a third digital-to-analog conversion unit 323, a fourth digital-to-analog conversion unit 324, a fifth digital-to-analog conversion unit 325, a sixth digital-to-analog conversion unit 326, a seventh digital-to-analog conversion unit 327, an eighth digital-to-analog conversion unit 328, a ninth digital-to-analog conversion unit 329, a first amplifying unit 331, a second amplifying unit 332, a third amplifying unit 333, a fourth amplifying unit 334, a fifth amplifying unit 335, a sixth amplifying unit 336, a seventh amplifying unit 337, an eighth amplifying unit 338, a ninth amplifying unit 339, a first MOS tube Q1, a second MOS tube Q2, a third MOS tube Q3, a The fourth MOS transistor Q4, the fifth MOS transistor Q5, the sixth MOS transistor Q6, the seventh MOS transistor Q7, the eighth MOS transistor Q8, the ninth MOS transistor Q9, the first current limiting unit 111, the second current limiting unit 112, the third current limiting unit 113, the fourth current limiting unit 114, the fifth current limiting unit 115, the sixth current limiting unit 116, the seventh current limiting unit 117, the eighth current limiting unit 118, the ninth current limiting unit 119, the first detection module 201, the second detection module 202, the third detection module 203, the fourth detection module 204, the fifth detection module 205, the sixth detection module 206, the seventh detection module 207, the eighth detection module 208, the ninth detection module 209 and the display module 500.

[0044] The display module 500 is connected to the controller 310, the first output terminal 311 of the controller 310 is connected to the first digital-to-analog conversion unit 321, the first digital-to-analog conversion unit 321 is connected to the first amplification unit 331, the first amplification unit 331 is connected to the gate of the first MOS tube Q1, the source of the first MOS tube Q1 is grounded, the drain of the first MOS tube Q1 is used to be connected to the output terminal of the first target power supply 401 through the first current limiting unit 111, and the detection terminal of the first detection module 201 is connected to the output terminal of the first target power supply 401.

[0045] The second output terminal 312 of the controller 310 is connected to the second digital-to-analog conversion unit 322, the second digital-to-analog conversion unit 322 is connected to the second amplification unit 332, the second amplification unit 332 is connected to the gate of the second MOS tube Q2, the source of the second MOS tube Q2 is grounded, the drain of the second MOS tube Q2 is used to be connected to the output terminal of the second target power supply 402 through the second current limiting unit 112, and the detection terminal of the second detection module 202 is connected to the output terminal of the second target power supply 402.

[0046] The third output terminal 313 of the controller 310 is connected to the third digital-to-analog conversion unit 323, the third digital-to-analog conversion unit 323 is connected to the third amplification unit 333, the third amplification unit 333 is connected to the gate of the third MOS tube Q3, the source of the third MOS tube Q3 is grounded, the drain of the third MOS tube Q3 is used to be connected to the output terminal of the third target power supply 403 through the third current limiting unit 113, and the detection terminal of the third detection module 203 is connected to the output terminal of the third target power supply 403.

[0047] The fourth output terminal 314 of the controller 310 is connected to the fourth digital-to-analog conversion unit 324, the fourth digital-to-analog conversion unit 324 is connected to the fourth amplification unit 334, the fourth amplification unit 334 is connected to the gate of the fourth MOS tube Q4, the source of the fourth MOS tube Q4 is grounded, the drain of the fourth MOS tube Q4 is used to be connected to the output terminal of the fourth target power supply 404 through the fourth current limiting unit 114, and the detection terminal of the fourth detection module 204 is connected to the output terminal of the fourth target power supply 404.

[0048] The fifth output terminal 315 of the controller 310 is connected to the fifth digital-to-analog conversion unit 325, the fifth digital-to-analog conversion unit 325 is connected to the fifth amplification unit 335, the fifth amplification unit 335 is connected to the gate of the fifth MOS tube Q5, the source of the fifth MOS tube Q5 is grounded, the drain of the fifth MOS tube Q5 is used to be connected to the output terminal of the fifth target power supply 405 through the fifth current limiting unit 115, and the detection terminal of the fifth detection module 205 is connected to the output terminal of the fifth target power supply 405.

[0049] The sixth output terminal 316 of the controller 310 is connected to the sixth digital-to-analog conversion unit 326, the sixth digital-to-analog conversion unit 326 is connected to the sixth amplification unit 336, the sixth amplification unit 336 is connected to the gate of the sixth MOS transistor Q6, the source of the sixth MOS transistor Q6 is grounded, the drain of the sixth MOS transistor Q6 is used to be connected to the output terminal of the sixth target power supply 406 through the sixth current limiting unit 116, and the detection terminal of the sixth detection module 206 is connected to the output terminal of the sixth target power supply 406.

[0050] The seventh output terminal 317 of the controller 310 is connected to the seventh digital-to-analog conversion unit 327, the seventh digital-to-analog conversion unit 327 is connected to the seventh amplification unit 337, the seventh amplification unit 337 is connected to the gate of the seventh MOS tube Q7, the source of the seventh MOS tube Q7 is grounded, the drain of the seventh MOS tube Q7 is used to be connected to the output terminal of the seventh target power supply 407 through the seventh current limiting unit 117, and the detection terminal of the seventh detection module 207 is connected to the output terminal of the seventh target power supply 407.

[0051] The eighth output terminal 318 of the controller 310 is connected to the eighth digital-to-analog conversion unit 328, the eighth digital-to-analog conversion unit 328 is connected to the eighth amplification unit 338, the eighth amplification unit 338 is connected to the gate of the eighth MOS tube Q8, the source of the eighth MOS tube Q8 is grounded, the drain of the eighth MOS tube Q8 is used to be connected to the output terminal of the eighth target power supply 408 through the eighth current limiting unit 118, and the detection terminal of the eighth detection module 208 is connected to the output terminal of the eighth target power supply 408.

[0052] The ninth output terminal 319 of the controller 310 is connected to the ninth digital-to-analog conversion unit 329, the ninth digital-to-analog conversion unit 329 is connected to the ninth amplification unit 339, the ninth amplification unit 339 is connected to the gate of the ninth MOS tube Q9, the source of the ninth MOS tube Q9 is grounded, the drain of the ninth MOS tube Q9 is used to be connected to the output terminal of the ninth target power supply 409 through the ninth current limiting unit 119, and the detection terminal of the ninth detection module 209 is connected to the output terminal of the ninth target power supply 409.

[0053] For example, in the process of testing the load capacity of the first target power supply 401, the first output terminal 311 of the controller 310 outputs a start control signal, which is converted into a conduction control signal after passing through the first digital-to-analog conversion unit 321 and the first amplification unit 331 and output to the gate of the first MOS transistor Q1. The first MOS transistor Q1 adjusts the amplitude and frequency of the current output by the first target power supply according to the voltage amplitude and frequency of the conduction control signal. Therefore, the present disclosure can simulate the current condition of the first target power supply 401 when connected to different loads through the first MOS transistor Q1, thereby simulating the operation condition of the first target power supply 401 when connected to different loads. The present disclosure also detects the stability parameters of the first target power supply 401 when outputting different currents through the first detection module 201, and finally determines the specific stability of the first target power supply 401 according to the stability parameters, thereby realizing the stability detection of the first target power supply 401 when connected to different loads.

[0054] In the process of testing the load capacity of the first target power supply 401, the operation influence of the first target power supply 401 on other target power supplies during the load operation can also be tested. The controller 310 only outputs the start control signal through the first output terminal 311 to turn on the first MOS tube Q1, and the other MOS tubes remain in the off state. The detection module corresponding to each target power supply detects the stability parameters of each target power supply. There are power supplies in each target power supply that are located in the same branch or in different branches as the first target power supply 401. Therefore, the coupling influence of the first target power supply 401 on other power supplies in the same branch can be tested, or the influence of the first target power supply 401 on the stability of power supplies in different branches can be tested. Therefore, the present disclosure can realize the detection of the influence of the target power supply on other power supplies in the power supply network when the target power supply outputs different currents, that is, when the target power supply is connected to different loads, thereby realizing the detection of the stability of all power supplies in the power supply network when the target power supply is connected to different loads, and realizing the effective test of the stability of the entire power supply network under load. The present disclosure can also simultaneously turn on any one or more of the first MOS tube Q1, the second MOS tube Q2, the third MOS tube Q3, the fourth MOS tube Q4, the fifth MOS tube Q5, the sixth MOS tube Q6, the seventh MOS tube Q7, the eighth MOS tube Q8 and the ninth MOS tube Q9 through the controller 310, thereby simulating the operation of any one or more power supplies in the power supply network when connected to the load, and respectively detecting the stability parameters of each target power supply through each detection module, so as to detect the stability of the power supply network under any working condition.

[0055] It should be noted that testing the load capacity of the first target power supply 401 is only an example. The present disclosure can also test the load capacity of other target power supplies in the power network 400. The specific target power supply to be tested needs to be selected according to actual conditions and is not specifically limited here.

[0056] Figure 3 The present invention provides a flow chart of a method for testing the load capacity of a power supply provided in an embodiment of the present invention. The testing method is applied to a device for testing the load capacity of a power supply corresponding to any of the above embodiments. Figure 3 As shown, the testing method includes: S610 and S620.

[0057] S610: Output different conduction control signals to at least one load simulation module, wherein the current amplitudes or current frequencies of output currents corresponding to any two conduction control signals are different.

[0058] Specifically, in the process of testing the load carrying capacity of the target power supply, the control module will output different conduction control signals to the load simulation module connected to the target power supply, and the load simulation module will make the target power supply output different output currents according to the different conduction control signals received, and the current amplitude or current frequency between each output current is not the same. Since the load simulation module can adjust the output current of the corresponding connected target power supply according to the different conduction control signals output by the control module, and the target power supply will output currents of different amplitudes and frequencies when connected to different loads during actual operation, the present disclosure can simulate the current conditions of the target power supply when connected to different loads through the load simulation module, and thus can simulate the operation conditions of the target power supply when connected to different loads.

[0059] S620. When each conduction control signal is output, obtain a stability parameter of a target power supply corresponding to the load simulation module.

[0060] Specifically, since the target power supply will output different currents accordingly when the control module outputs different conduction control signals, the detection module can determine the stability parameters of the target power supply when it is connected to different loads by detecting the stability parameters of the target power supply when it outputs different currents, and then determine the stability of the target power supply when using different loads, thereby realizing the detection of the stability of the target power supply when connected to different loads.

[0061] In some embodiments, the testing method further includes: obtaining stability parameters of the first power supply when each conduction control signal is output; wherein the first power supply is any power supply in the power supply network that is located on the same power supply branch as the target power supply.

[0062] Exemplarily, the first power supply can be a power supply directly connected to the target power supply in the power supply network. During the process of testing the load capacity of the target power supply, the detection module will also detect the stability parameters of the first power supply, thereby testing the coupling effect of the target power supply on other power supplies in the same branch when running under load.

[0063] It should be noted that the first power source may also be other power sources in the power network that are located in the same power branch as the target power source, which is not specifically limited here.

[0064] In some embodiments, the testing method further includes: obtaining stability parameters of the second power supply when the target power supply outputs different currents; wherein the second power supply is any power supply in the power supply network that is located on a different power supply branch from the target power supply.

[0065] Specifically, during the process of testing the load capacity of the target power supply, the detection module will also detect the stability parameters of the second power supply, thereby testing the impact of the target power supply on the stability of the power supply in the power network that is in a different branch from the target power supply when running under load.

[0066] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0067] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for testing the load capacity of a power supply, characterized in that: include: A control module, used for outputting a conduction control signal; At least one load simulation module, a control end of the load simulation module is connected to the control module, and the load simulation module is correspondingly connected to at least one target power supply of the power supply network; the load simulation module is used to adjust the output current of the target power supply according to the conduction control signal; At least one detection module, a detection end of the detection module is connected to the target power supply, and the detection module is used to detect the stability parameter of the target power supply.

2. The power supply load capacity testing device according to claim 1, characterized in that: The load simulation module includes a switch unit; The control end of the switch unit is connected to the control module, the first end of the switch unit is connected to the target power supply, and the second end of the switch unit is grounded; The switch unit is used to adjust the conduction amplitude according to the conduction control signal.

3. The power supply load capacity testing device according to claim 2, characterized in that: The switch unit comprises a transistor; a control terminal of the transistor is connected to the control module, a first electrode of the transistor is connected to the target power supply, and a second electrode of the transistor is grounded; The transistor is used to adjust the amplitude and frequency of the output current according to the conduction control signal.

4. The power supply load capacity testing device according to claim 3, characterized in that: The transistor is a MOS tube; The gate of the MOS tube is connected to the control module, the first electrode of the MOS tube is connected to the target power supply, and the second electrode of the MOS tube is grounded; The conduction control signal is a voltage signal, and the MOS tube is used to adjust the amplitude of the output current according to the voltage amplitude of the conduction control signal and to adjust the frequency of the output current according to the frequency of the conduction control signal.

5. The device for testing the load capacity of a power supply according to claim 2, characterized in that: The load simulation module further includes a current limiting unit; the first end of the switch unit is connected to the target power supply through the current limiting unit.

6. The device for testing the load capacity of a power supply according to claim 1, characterized in that: The control module includes a controller, at least one digital-to-analog conversion unit and at least one amplification unit; At least one output terminal of the controller is connected to the digital-to-analog conversion unit, and the output terminal of the digital-to-analog conversion unit is connected to the control terminal of the load simulation module through the amplification unit; At least one output terminal of the controller is used to output a start control signal; the start control signal is converted into the conduction control signal through the digital-to-analog conversion unit and the amplification unit.

7. The device for testing the load capacity of a power supply according to claim 6, characterized in that: Also includes a display module; The display module is connected to the control module; The control module is further used to send the signal frequency and signal amplitude corresponding to the start control signal to the display module.

8. A method for testing the load capacity of a power supply, characterized in that: A device for testing the load capacity of a power supply as claimed in any one of claims 1 to 7; The method comprises: Outputting different conduction control signals to at least one load simulation module; wherein the current amplitudes or current frequencies of the output currents corresponding to any two conduction control signals are different; In the case of outputting each conduction control signal, a stability parameter of a target power supply corresponding to the load simulation module is obtained.

9. The method for testing the load capacity of a power supply according to claim 8, characterized in that: The method further comprises: In the case of outputting each conduction control signal, obtaining a stability parameter of the first power supply; The first power source is any power source in the power network that is located on the same power branch as the target power source.

10. The method for testing the load capacity of a power supply according to claim 8, characterized in that: The method further comprises: Obtaining stability parameters of the second power supply when the target power supply outputs different currents; The second power source is any power source in the power network that is located on a different power branch from the target power source.

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