Power device test inductor switching device and test method

Abstract

The invention provides a power device test inductor switching device comprising a stator which is provided with a plurality of first connection terminals; the air core inductor is provided with a plurality of different inductive load gears, and at least part of the first connecting terminals are connected with the different inductive load gears; the rotor is provided with a pair of second connecting terminals which are used for being connected with the positive electrode and the negative electrode of a device to be tested respectively, and the pair of second connecting terminals are sequentially connected with the multiple pairs of different first connecting terminals along with rotation of the rotor; according to the switching device, under the condition that the size of the inductance switching device is not increased, the to-be-tested device is selectively connected with the multiple different inductance loads through the rotor, and therefore the to-be-tested device can be selectively connected with the multiple different inductance loads through the rotor, and the different inductance loads can be switched according to the different inductance load gears connected with the multiple pairs of different first connecting terminals. And the efficiency of inductive load switching is improved.

Description

Technical Field

[0001] The present application relates to a test inductor, and in particular to a power device test inductor switching device and a test method. Background Art

[0002] Power devices are crucial in many fields. Inductive loads simulate actual loads, energy storage, auxiliary current commutation, etc. in tests. For different power devices, the test equipment needs to have different inductive load gear switching functions. The existing test inductive switching device includes a slide rail and a clamping assembly. Multiple inductive loads are loaded on the slide rail. Through the movement of the slide rail, different inductive loads are connected in parallel with the test device and the device to be tested is clamped by the clamping assembly. However, as the demand for inductive load gears increases, the slide rail is lengthened, resulting in an increase in the overall size of the device. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide an inductor switching device and a testing method for a power device test, so as to solve the problem of large size of the existing inductor load switching device.

[0004] Based on the above purpose, the present application provides a power device test inductor switching device, comprising:

[0005] A stator, wherein a plurality of first connection terminals are provided on the stator;

[0006] The air-core inductor is provided with a plurality of different inductive load gears, and at least part of the first connecting terminals are connected to different said inductive load gears;

[0007] A rotor is provided with a pair of second connection terminals, which are respectively used to connect the positive and negative electrodes of the device under test, and the pair of second connection terminals are sequentially connected to multiple pairs of different first connection terminals as the rotor rotates, so that the device under test switches to different inductive loads according to the inductive load gears connected to the multiple pairs of different first connection terminals.

[0008] Optionally, the first connecting terminals are arranged in a circular array and are evenly and equidistantly distributed along the circumference of the circular array.

[0009] Optionally, a plurality of mounting holes for mounting the second connecting terminal are provided on the rotor, so that the second connecting terminal is connected to two adjacent first connecting terminals or to two spaced first connecting terminals.

[0010] Optionally, it also includes a first drive assembly, which includes a rotating motor, a reducer and a coupling, the output shaft of the rotating motor is connected to the reducer, the output shaft of the reducer is connected to the coupling, and the coupling is installed at the center position of the rotor.

[0011] Optionally, a second driving component is further included, which includes a driving member and a slider, the output shaft of the driving member is fixedly connected to the slider, the rotating motor is installed on the slider, and the driving member drives the slider to move and thereby drives the second connecting terminal to connect to the first connecting terminal.

[0012] Optionally, a limiting shaft is provided on a side of the rotor close to the stator, a limiting groove is provided on the stator, and the limiting shaft is arranged in the limiting groove.

[0013] Optionally, the second connecting terminal is a spring pin.

[0014] Optionally, the stator is a cylinder, and the second connecting terminal is an L-shaped copper bar, one end of the L-shaped copper bar is attached to the end surface of the stator close to the rotor for connecting to the second connecting terminal, and the other end is attached to the side surface of the stator for connecting to the inductive load gear.

[0015] Optionally, a mounting member is further included for mounting the stator, the rotor, the first drive assembly and the second drive assembly.

[0016] Based on the same inventive concept, the present disclosure also provides a power device testing method, which is applied to the above-mentioned device and is characterized by comprising:

[0017] Determine multiple target inductor load levels in the air-core inductor according to the test power requirement of the device under test;

[0018] Connecting each of the target inductive load levels to one of the first connecting terminals;

[0019] Connecting one end of a pair of the second connection terminals to the positive and negative electrodes of the device under test respectively;

[0020] The rotor is controlled to intermittently rotate relative to the stator. During the intermittent rotation, the other end of the pair of second connection terminals is connected to multiple pairs of first connection terminals, and multiple closed loops are formed between the device under test, the second connection terminals, the first connection terminals and the air-core inductor; wherein the air-core inductor in each of the closed loops is a different inductive load;

[0021] The performance of the device under test is tested with each inductive load connected.

[0022] As can be seen from the above, a power device test inductor switching device provided in the present application includes a stator, a rotor and an air-core inductor, a first connecting terminal is provided on the stator, a plurality of different inductance load gears are provided on the air-core inductor, at least part of the first connecting terminals are connected to different inductance load gears, a pair of second connecting terminals is provided on the rotor, and as the rotor rotates, a pair of the second connecting terminals on the rotor are sequentially connected to the plurality of pairs of first connecting terminals on the stator, therefore, a plurality of closed loops are sequentially formed between the device under test, the second connecting terminals, the first connecting terminals and the air-core inductor, since each second connecting terminal is connected to a different air-core inductance gear, and the size of the inductance load is determined by the two inductance load gears connected to the pair of first connecting terminals, therefore, the air-core inductor in each of the closed loops is an inductance load of different sizes, and the above-mentioned switching device selectively connects a plurality of different inductance loads to the device under test through the rotor without increasing the volume of the inductance switching device, and improves the efficiency of inductance load switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0025] Figure 2 A schematic diagram showing the structure of an air-core inductor according to an embodiment of the present application;

[0026] Figure 3 A schematic diagram showing the structure of a stator in an embodiment of the present application;

[0027] Figure 4 This is a schematic diagram showing the structure of the rotor in an embodiment of the present application;

[0028] Figure 5 Schematic diagram of the connection between the stator terminal and the first air-core inductor and part of the terminal of the second air-core inductor in the embodiment of the present application.

[0029] Figure 6 This is a schematic diagram of an octagonal connection relationship between the first connection terminals in an embodiment of the present application;

[0030] Figure 7 This is a schematic diagram of the snowflake-shaped connection relationship between the first connection terminals in the embodiment of the present application;

[0031] Figure 8Schematic diagram of the star connection relationship between the first connection terminals in the embodiment of the present application.

[0032] Fig. 9 Flow chart of the testing method in the embodiment of the present application.

[0033] Fig.10 This is a schematic diagram of the hardware structure of the electronic device in the embodiment of the present application.

[0034] Figure numerals: 1. stator; 11. first connecting terminal; 111. stator terminal; 12. limiting groove; 2. air-core inductor; 21. first air-core inductor; 22. second air-core inductor; 3. rotor; 31. second connecting terminal; 311. mounting hole; 3111. first mounting hole; 3112. second mounting hole; 3113. third mounting hole; 3114. fourth mounting hole; 32. limiting shaft; 4. first drive assembly; 41. rotating motor; 42. reducer; 43. coupling; 5. second drive assembly; 51. driving member; 52. slider; 6. mounting member. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0036] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] Based on the background, power devices play an important role in energy conversion, motor control, industrial automation, intelligent manufacturing and other fields. As the performance of power devices improves, the demand for power device testing is also growing. In the process of power device testing, inductive loads mainly play the role of simulating actual loads, providing energy storage, assisting current commutation, and generating shutdown overvoltage. For different high-power semiconductor devices, the test equipment is required to have the switching function of different inductive loads to meet the needs of different test conditions.

[0038] There are currently two main technical solutions to achieve load switching of power devices during testing:

[0039] Technical solution for switching inductive loads through DC contactors: The inductive load gear required for the test is connected in parallel with the device under test through a DC contactor. During the test, the inductive load required for the test is connected by controlling the DC contactor switch to meet the test conditions.

[0040] The technical solution for switching the inductive load by means of a slide rail and a clamping device: the inductive load gear required for the test is brought out through a cable and the docking interfaces are distributed in a straight line on the slide rail. The clamping devices at both ends of the slide rail are connected to the device under test. During the test, the inductive load required for the test is selected by controlling the slide rail and the inductive load is connected in parallel with the test device through the clamping device to meet the test conditions.

[0041] With the development of power devices and the continuous strong demand from the application end, higher requirements are placed on the switching function of inductive loads in power device test equipment. In the face of the research and development needs of power device test equipment, the existing technology has the following problems:

[0042] Due to the performance and application scenarios of power devices, the device requires a test voltage of more than 2000V and a test current of 2000A during the test process. The DC contactor that adapts to this working condition is expensive and bulky. As the demand for inductive load gears increases, the demand for DC contactors also increases linearly. The design of using DC contactors to switch inductive loads will increase the cost of equipment development and greatly increase the size of the test equipment.

[0043] The technical solution of switching inductive loads by means of slide rails and clamping devices is not flexible in design. When the number of gears for the inductive load has been determined (generally, four switching gears are provided), if the demand for the inductive load gears increases, it is necessary to lengthen the slide rail stroke to provide more selection gears, resulting in an increase in the overall size of the inductive load switching device. This will not only increase the volume of the test equipment, but also require reconsidering the assembly problem of the device after the size modification and the impact of the modification on the overall design of the test equipment.

[0044] In order to solve the above problems, the present application provides a power device testing inductor switching device.

[0045] The following is combined with Figure 1-10 The embodiments of the present application will be described in detail.

[0046] like Figure 1 , Figure 2 and Figure 3 As shown, a power device testing inductor switching device comprises:

[0047] A stator 1, wherein the stator 1 is provided with a plurality of first connection terminals 11;

[0048] The air-core inductor 2 is provided with a plurality of inductive load gears, and at least part of the first connecting terminals 11 are connected to different inductive load gears;

[0049] The rotor 3 is provided with a pair of second connection terminals 31, which are respectively used to connect the positive and negative electrodes of the device under test, and the pair of second connection terminals 31 are sequentially connected to multiple pairs of different first connection terminals 11 as the rotor 3 rotates, so that the device under test switches to different inductive loads according to the inductive load gears connected to the multiple pairs of different first connection terminals 11.

[0050] Specifically, the stator 1 is a cylinder, the first connection terminals 11 are connected to the stator 1, and are evenly distributed around the central axis of the cylinder, that is, the first connection terminals 11 are arranged in a circular array, and are evenly and equidistantly distributed along the circumference of the circular array, so that the second connection terminals 31 can sequentially connect to different pairs of first connection terminals 11 as the rotor 3 rotates. The rotor 3 is opposite to the stator 1, so that the first connection terminals 11 and the second connection terminals 31 are opposite to each other, thereby facilitating the connection between the first connection terminals 11 and the second connection terminals 31.

[0051] In addition, the air-core inductor 2 is provided with a plurality of inductive load gears. During testing, part or all of the first connecting terminals 11 can be selected to connect to different inductive load gears according to the test requirements, and each first connecting terminal 11 is connected to an inductive load gear. The second connecting terminals 31 are provided as a pair, one end of the pair of second connecting terminals 31 is respectively connected to the positive and negative electrodes of the device under test, and the other end is used to connect to a pair of first connecting terminals 11. When the first connecting terminal 11 and the second connecting terminal 31 are connected, the device under test, the first connecting terminal, the second connecting terminal and the air-core inductor 2 form a closed loop. In this closed loop, the air-core inductor 2 is an inductive load, that is, in this closed loop, the device under test is connected to a specific value of Inductive load, the size of which is determined by the two inductive load levels connected to a pair of first connecting terminals 11 in the closed loop; when the device under test needs to switch to inductive loads of different sizes, the rotor 3 rotates, and the second connecting terminal 31 is connected to another different pair of first connecting terminals 11 as the rotor 3 rotates. Since the inductive load level connected to the pair of first connecting terminals 11 is different from the inductive load level connected to the previous pair of first connecting terminals 11, the inductive load in the new closed loop is different in size from the inductive load in the previous closed loop. The rotor 3 continues to rotate, and the above steps are repeated to form multiple different closed loops, so that the device under test is connected to different inductive loads, thereby meeting the test requirements.

[0052] In summary, as the rotor 3 rotates, a pair of the second connection terminals 31 on the rotor 3 are sequentially connected to multiple pairs of the first connection terminals 11. Therefore, multiple closed loops are sequentially formed between the device under test, the second connection terminals 31, the first connection terminals 11 and the air-core inductor 2. Since the air-core inductor 2 connected to each second connection terminal 31 has a different gear, and the size of the inductive load is determined by the two inductive load gears connected to a pair of first connection terminals 11, the air-core inductor 2 in each of the closed loops is a different inductive load. The above-mentioned switching device enables the device under test to selectively connect to multiple different inductive loads through the rotor 3 without increasing the volume of the inductive switching device, and improves the efficiency of inductive load switching.

[0053] In some embodiments, Figure 1 and Figure 4 As shown, the rotor 3 is provided with a plurality of mounting holes 311 for mounting the second connection terminals 31 , so that the second connection terminals 31 are connected to two adjacent first connection terminals 11 or to two spaced first connection terminals 11 .

[0054] Exemplarily, eight first connection terminals 11 are provided, four mounting holes 311 are provided, and two second connection terminals 31 are selectively installed in the four mounting holes 311 so that the second connection terminals 31 connect adjacent first connection terminals 11 or connect two spaced first connection terminals 11, wherein the two first connection terminals 11 connected by the second connection terminals 31 may be spaced apart by two first connection terminals 11 or by three first connection terminals 11, so as to increase the diversity of connectivity of different first connection terminals 11, thereby enabling the device under test to connect to more inductive loads of different sizes.

[0055] Specifically, the mounting hole 311 includes a first mounting hole 3111, a second mounting hole 3112, a third mounting hole 3113 and a fourth mounting hole 3114. When a pair of second connecting terminals 31 are respectively installed in the first mounting hole 3111 and the second mounting hole 3112 or respectively installed in the third mounting hole 3113 and the fourth mounting hole 3114, the second connecting terminal 31 connects two adjacent first connecting terminals 11; a pair of second connecting terminals 31 are respectively installed in the first mounting hole 3111 and the fourth mounting hole 3114 or respectively installed in the second mounting hole 3112 and the third mounting hole 3113. When in the installation hole position 3113, the second connection terminal 31 connects two spaced first connection terminals 11, and three first connection terminals 11 are spaced between the two first connection terminals 11, that is, the two first connection terminals 11 are symmetrically distributed along the central axis of the stator 1; when a pair of second connection terminals 31 are respectively installed in the first installation hole position 3111 and the third installation hole position 3113 or respectively installed in the second installation hole position 3112 and the fourth installation hole position 3114, the second connection terminal 31 connects two spaced first connection terminals 11, and two first connection terminals 11 are spaced between the two first connection terminals 11.

[0056] Furthermore, a plurality of air-core inductors 2 may be selected, and a plurality of air-core inductors 2 may be selectively connected in series to increase the inductive load connected to the device under test. For example, Figure 2 As shown, two air-core inductors 2 are selected, which are named as the first air-core inductor 21 and the second air-core inductor 22. The first air-core inductor 21 and the second air-core inductor 22 are connected in series. Each air-core inductor 2 can provide an inductive load range of 0 to 520uH, and each air-core inductor 2 has 13 terminals to provide different ranges of inductive load gear selection. Figure 3 and Figure 5 As shown, the first connection end 11 is provided with a stator terminal 111, and the stator terminal 111 1-8 is the connection position of different first connection terminals 11 on the stator 1, and the connection ports AI on the first air-core inductor 21 and the second air-core inductor 22 are part of the terminals on the two air-core inductors 2, and the corresponding inductance values ​​are shown in Table 1:

[0057] Table 1 Correspondence between hollow inductor terminals and inductance values

[0058] Binding Posts A B C D E F G H I Sensitivity 0uH 20uH 520uH 0uH 20uH 30uH 100uH 230uH 520uH

[0059] Figure 5This is a case of connection between the stator terminal 111 and the first air-core inductor 21 and part of the terminal of the second air-core inductor 22. This case is used as an example to describe the connection relationship between the stator terminal 111 and the air-core inductor 2. Taking the connection of a 1000uh inductive load as an example, the stator terminal 111 6 connects the E column of the second air-core inductor 22 and flows out from the I column, so that the second air-core inductor 22 is an inductive load of 500uh. After the connection comes out from I, it connects the B column of the first air-core inductor 21 and flows out from C, so that the first air-core inductor 21 is an inductive load of 500uh. The two air-core inductors are connected in series to form an inductive load of 1000uh, which is connected to the stator terminal 111 5. When the stator terminal 111 5 and the stator terminal 111 6 are connected and the device under test is connected through the second connection terminal 31, the device under test is loaded with an inductive load of 1000uh.

[0060] according to Figure 1 and Figure 6 As shown, when a pair of second connection terminals 31 are placed in the first mounting hole 3111 and the second mounting hole 3112 or in the third mounting hole 3113 and the fourth mounting hole 3114, the second connection terminals 31 are connected to the adjacent first connection terminals 11, and the stator terminals 111 1-8 are the connection positions of the first connection terminals 11 on the stator 1. The connection of each line segment will realize the switching of an inductive load gear. Figure 5 According to the connection relationship between the hollow inductor 2 terminal and the first connecting terminal 11 and the inductance value corresponding to the hollow inductor 22 terminal in Table 1, the inductor switching device can provide eight inductance load options: short circuit, 20uH, 30uH, 100uH, 200uH, 500uH, 790uH, and 1000uH.

[0061] according to Figure 1 and Figure 7 As shown, when a pair of second connection terminals 31 are respectively installed in the first installation hole position 3111 and the fourth installation hole position 3114 or respectively installed in the second installation hole position 3112 and the third installation hole position 3113, the second connection terminal 31 connects two first connection terminals 11 that are spaced apart, and three first connection terminals 11 are spaced apart between the two first connection terminals 11, that is, the two first connection terminals 11 are symmetrically distributed along the central axis of the stator 1, and the stator terminals 111 1-8 are the connection positions of the first connection terminals 11 on the stator 1. The connection of each line segment will realize the switching of an inductive load. Figure 5 The connection relationship between the hollow inductor 2 terminal and the first connecting terminal 11 and the inductance value corresponding to the hollow inductor 22 terminal in Table 1, at this time, the inductor switching device can provide 4 inductance load options of 80uH, 210uH, 490uH, and 1020uH.

[0062] like Figure 1 and Figure 8 As shown, when a pair of second connection terminals 31 are respectively installed in the first installation hole position 3111 and the third installation hole position 3113 or respectively installed in the second installation hole position 3112 and the fourth installation hole position 3114, the second connection terminal 31 connects two first connection terminals 11 that are spaced apart, and two first connection terminals 11 are spaced apart between the two first connection terminals 11, and the stator terminals 111 1-8 are the connection positions of the first connection terminals 11 on the stator 1, and the connection of each line segment will realize the switching of an inductive load, according to Figure 5 The connection relationship between the hollow inductor 2 terminal and the first connecting terminal 11 and the inductance value corresponding to the hollow inductor 22 terminal in Table 1, at this time, the inductor switching device can provide 8 types of inductive load selections of 10uH, 20uH, 230uH, 290uH, 420uH, 510uH, 920uH, and 520uH.

[0063] In summary, without changing the overall design and size of the device, the inductance switching device can provide 20 inductance load options by changing the position of the first connection terminal 11. Since the connection relationship between the stator terminal 111 and the air-core inductor 2 terminal can also be changed, the device is more flexible and can meet more inductance load requirements as needed during the test process.

[0064] In some embodiments, Figure 1 As shown, the power device testing inductance switching device also includes a first drive component 4, which includes a rotating motor 41, a reducer 42 and a coupling 43. The output shaft of the rotating motor 41 is connected to the reducer 42, and the output shaft of the reducer 42 is connected to the coupling 43. The coupling 43 is installed at the center position of the rotor 3.

[0065] Specifically, the first driving component 4 is connected to an intelligent control system, which can accurately control the rotation angle of the output shaft of the rotating motor 41, thereby accurately controlling the rotation angle of the rotor 3, so that the second connecting terminal 31 is accurately connected to the first connecting terminal 11.

[0066] In this embodiment, the rotating motor 41 serves as a power source to provide a stable and controllable torque output to ensure smooth switching of the inductive load. The reducer 42 reduces the rotation speed of the rotating motor 41 and increases the output torque to make the first connection terminal 11 and the second connection terminal 31 more accurately connected. The coupling 43 tightly connects the output shaft of the reducer 42 with the center position of the rotor 3 to ensure the synchronization and accuracy of the rotation action, thereby improving the precision and accuracy of the inductive load switching.

[0067] In some embodiments, Figure 1As shown, the power device test inductance switching device also includes a second driving component 5, the second driving component 5 includes a driving member 51 and a slider 52, the output shaft of the driving member 51 is fixedly connected to the slider 52, the rotating motor 41 is installed on the slider 52, and the driving member 51 drives the slider 52 to move and thereby drives the second connecting terminal 31 to connect to the first connecting terminal 11.

[0068] In this embodiment, the accurate alignment between the second connection terminal 31 and the first connection terminal 11 can be ensured by the stable driving of the driving member 51 and the precise movement of the slider 52, thereby improving the stability and reliability of the connection between the second connection terminal 31 and the first connection terminal 11. When it is necessary to switch the inductive load, the driving member 51 can also drive the rotating motor 41, the rotor 3 and the second connection terminal 31 to retreat, reserving space for the rotation of the rotor 3. After the rotation of the rotor 3 is completed, the driving member 51 drives the slider 52 forward, and the slider 52 drives the rotating motor 41, the rotor 3 and the second connection terminal 31 forward, so that the second connection terminal 31 is connected to the new first connection terminal 11, thereby completing the smooth switching of the inductive load of the device under test.

[0069] In some embodiments, the second connection terminal 31 is an L-shaped copper bar, one end of which is attached to the end surface of the stator 1 close to the rotor 3 for connecting to the second connection terminal 31, and the other end is attached to the side surface of the stator 1 for connecting to the inductive load gear.

[0070] In addition, the second connection terminal 31 is a spring pin.

[0071] Specifically, the L-shaped copper busbar serves as the second connecting terminal 31, one end of which is attached to the end face of the stator 1 close to the rotor 3 to connect to the spring pin, and the other end is attached to the side face of the stator 1 and extends to a sufficient length so that the stator terminal 111 can be set thereon, thereby facilitating the connection of the inductive load gear.

[0072] In this embodiment, the L-shaped copper busbar has good electrical conductivity and can ensure the stability and efficiency of the current during transmission. The L-shaped copper busbar is adapted to the shape of the stator 1, one end of which is connected to the spring pin and the other end is connected to the air-core inductor 2, so that the air-core inductor 2 maintains a stable connection with the device under test. The spring pin is an elastic electrical connection element that can automatically adapt to slight deviations in the connection position. Even if it cannot be accurately and completely abutted with the first connection terminal 11, the spring pin can achieve a stable electrical connection through its elastic deformation. This elastic connection characteristic helps to reduce poor contact caused by poor connection.

[0073] In some embodiments, Figure 1 and Figure 4As shown, a limiting shaft 32 is provided on a side of the rotor 3 close to the stator 1 , a limiting groove 12 is provided on the stator 1 , and the limiting shaft 32 is arranged in the limiting groove 12 .

[0074] In this embodiment, the cooperation between the limiting shaft 32 and the limiting groove 12 can ensure the precise positioning of the rotor 3 on the stator 1, and can provide an additional fixing effect to prevent the rotor 3 from moving or offsetting during operation, thereby improving the operating efficiency and stability of the entire device.

[0075] In some embodiments, Figure 1 As shown, the power device testing inductance switching apparatus further includes a mounting member 6 for mounting the stator 1 , the rotor 3 , the first drive assembly 4 and the second drive assembly 5 .

[0076] Specifically, the mounting member 6 includes a first mounting plate and a second mounting plate, the first mounting plate is located on one side of the second mounting plate, and the two are connected to form an L-shaped structure, the stator 1 is mounted on the first mounting plate, and the rotor 3 is mounted on the second mounting plate so as to be opposite to the stator 1, and the first drive component 4 and the second drive component 5 are both mounted on the second mounting plate.

[0077] In this embodiment, the stator 1, the rotor 3, the first drive assembly 4 and the second drive assembly 5 are integrated on a mounting plate, which is convenient for carrying and using the device.

[0078] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, Fig. 9 As shown, the present application also provides a power device testing method, comprising:

[0079] S101: determining a plurality of target inductor load gears in the air-core inductor 2 according to the test power requirement of the device under test;

[0080] Specifically, a plurality of different target inductive loads are determined according to the power requirement of the device under test, and a plurality of required target inductive load gears are determined by the values ​​of these target inductive loads, wherein the plurality of inductive load gears can obtain the required inductive load by connecting the inductive load gears. In addition, a plurality of air-core inductors 2 can be set in parallel and connected in series according to the situation to increase the range of the inductive load.

[0081] S102: Connect each of the target inductive load levels to one of the first connecting terminals 11;

[0082] Specifically, the target inductive load level is connected to the stator terminal 111 of the first connecting terminal 11. When connecting, it should be ensured that the connection between the stator terminal 111 and the inductive load level is firm and reliable to avoid loosening or falling off during the test. In order to facilitate subsequent testing and data analysis, the corresponding inductive load level information can be marked on each first connecting terminal 11, and the relevant information can be recorded in the test record table.

[0083] S103: connecting one end of a pair of the second connection terminals 31 to the positive and negative electrodes of the device under test respectively;

[0084] Specifically, the rotor 3 is provided with a plurality of mounting holes 311 for mounting the second connection terminal 31. The second connection terminal 31 can be installed on different mounting holes 311 so that the second connection terminal 31 is connected to two adjacent first connection terminals 11 or to two spaced first connection terminals 11, thereby increasing the range of the inductive load connected to the device under test.

[0085] S103: Control the rotor 3 to intermittently rotate relative to the stator 1. During the intermittent rotation, the other end of the pair of second connection terminals 31 is connected to multiple pairs of first connection terminals 11, and multiple closed loops are formed between the device under test, the second connection terminals 31, the first connection terminals 11, and the air-core inductor 2; wherein the air-core inductor 2 in each of the closed loops is a different inductive load;

[0086] Specifically, during the test, the rotor 3 is close to the stator 1, the first connection terminal 11 and the second connection terminal 31 are connected, and the device under test, the first terminal, the second terminal and the air-core inductor 2 form a closed loop. In this closed loop, the air-core inductor 2 is an inductive load, that is, the device under test is connected to a target inductive load of a specific value; when the device under test needs to switch the inductive load, the rotor 3 rotates, and the second connection terminal 31 is connected to another different pair of first connection terminals 11 as the rotor 3 rotates. Since the inductive load gear connected to the pair of first connection terminals 11 is different from the inductive load gear connected to the previous pair of first connection terminals 11, the device under test in the new closed loop is connected to a different target inductive load, the rotor 3 continues to rotate, and the above steps are repeated to form multiple different closed loops, and the device under test is connected to different target inductive loads.

[0087] S104: Perform performance test on the device under test connected to each inductive load.

[0088] Specifically, after connecting each inductive load, the device under test is subjected to performance testing, such as measuring its key indicators such as output power, efficiency, and temperature rise, and the test data is recorded in a test record sheet, and data analysis is performed to evaluate the performance of the device under different inductive loads.

[0089] In this embodiment, by selecting multiple target inductive load gears, the target inductive loads that need to be connected to the device under test are covered, thereby ensuring the comprehensiveness of the test; by precisely controlling the intermittent rotation of the rotor 3, it is ensured that the second connecting terminal 31 is accurately connected to multiple pairs of first connecting terminals 11, so that the device under test can quickly switch multiple inductive loads, thereby increasing the test speed and test efficiency.

[0090] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the test method described in any of the above embodiments is implemented.

[0091] Fig.10 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0092] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0093] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0094] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0095] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0096] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0097] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0098] The electronic device of the above embodiment is used to implement the corresponding test method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0099] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the test method described in any of the above embodiments.

[0100] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0101] The computer instructions stored in the storage medium of the above embodiments are used to enable the computer to execute the test method described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0102] It is understandable that before using the technical solutions of each embodiment of the present disclosure, the type, scope of use, usage scenarios, etc. of the personal information involved will be informed to the user in an appropriate manner, and the user's authorization will be obtained.

[0103] For example, in response to receiving an active request from a user, a prompt message is sent to the user to clearly remind the user that the operation requested to be performed will require obtaining and using the user's personal information. Thus, the user can independently choose whether to provide personal information to software or hardware such as an electronic device, application, server, or storage medium that performs the operation of the technical solution of the present disclosure according to the prompt message.

[0104] As an optional but non-limiting implementation, in response to receiving the user's active request, the prompt information may be sent to the user in the form of a pop-up window, in which the prompt information may be presented in text form. In addition, the pop-up window may also carry a selection control for the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0105] It is understandable that the above notification and the process of obtaining user authorization are merely illustrative and do not constitute a limitation on the implementation of the present disclosure. Other methods that meet relevant laws and regulations may also be applied to the implementation of the present disclosure.

[0106] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0107] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0108] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0109] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A power device testing inductor switching device, characterized in that: include: A stator (1), wherein the stator (1) is provided with a plurality of first connection terminals (11); The air-core inductor (2) is provided with a plurality of different inductive load gears, and at least some of the first connecting terminals (11) are connected to different inductive load gears; A rotor (3), wherein a pair of second connection terminals (31) are provided on the rotor (3), respectively used to connect the positive and negative electrodes of the device under test, and the pair of second connection terminals (31) are sequentially connected to a plurality of different pairs of the first connection terminals (11) as the rotor (3) rotates, so that the device under test switches to different inductive loads according to the inductive load gears connected to the plurality of different pairs of the first connection terminals (11).

2. The power device test inductor switching device according to claim 1, characterized in that: The first connecting terminals (11) are arranged in a circular array and are evenly and equidistantly distributed along the circumference of the circular array.

3. The power device test inductor switching device according to claim 2, characterized in that: The rotor (3) is provided with a plurality of mounting holes (311) for mounting the second connecting terminal (31), so that the second connecting terminal (31) connects two adjacent first connecting terminals (11) or connects two spaced first connecting terminals (11).

4. The power device test inductor switching device according to claim 1, characterized in that: The invention also comprises a first drive assembly (4), wherein the first drive assembly (4) comprises a rotating motor (41), a reducer (42) and a coupling (43), wherein the output shaft of the rotating motor (41) is connected to the reducer (42), the output shaft of the reducer (42) is connected to the coupling (43), and the coupling (43) is installed at the center position of the rotor (3).

5. The power device test inductor switching device according to claim 4, characterized in that: The invention also comprises a second driving assembly (5), wherein the second driving assembly (5) comprises a driving member (51) and a slider (52), wherein an output shaft of the driving member (51) is fixedly connected to the slider (52), the rotating motor (41) is mounted on the slider (52), and the driving member (51) drives the slider (52) to move, thereby driving the second connecting terminal (31) to connect to the first connecting terminal (11).

6. The power device test inductor switching device according to claim 1, characterized in that: A limiting shaft (32) is provided on a side of the rotor (3) close to the stator (1), a limiting groove (12) is provided on the stator (1), and the limiting shaft (32) is arranged in the limiting groove (12).

7. A power device testing inductor switching device according to claim 1, characterized in that: The second connecting terminal (31) is a spring pin.

8. The power device testing inductor switching device according to claim 1, characterized in that: The stator (1) is a cylinder, and the second connecting terminal (31) is an L-shaped copper bar, one end of the L-shaped copper bar is attached to the end surface of the stator (1) close to the rotor (3) for connecting to the second connecting terminal (31), and the other end is attached to the side surface of the stator (1) for connecting to the inductive load gear.

9. A power device testing inductor switching device according to claim 5, characterized in that: It also comprises a mounting member (6) for mounting the stator (1), the rotor (3), the first drive assembly (4) and the second drive assembly (5).

10. A power device testing method, applied to the device according to any one of claims 1 to 9, characterized in that: include: Determining a plurality of target inductor load levels in the air-core inductor (2) according to the test power requirement of the device under test; Connecting each of the target inductive load levels to one of the first connecting terminals (11); Connecting one end of a pair of the second connection terminals (31) to the positive and negative electrodes of the device under test respectively; The rotor (3) is controlled to rotate intermittently relative to the stator (1); during the intermittent rotation, the other end of the pair of second connection terminals (31) is connected to a plurality of pairs of first connection terminals (11), and a plurality of closed loops are formed between the device under test, the second connection terminals (31), the first connection terminals (11) and the air-core inductor (2); wherein the air-core inductor (2) in each of the closed loops is a different inductive load; The performance of the device under test is tested with each inductive load connected.

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