Power supply module testing device

Abstract

The utility model discloses a power supply module testing device, which comprises a box body, a plurality of fixing assemblies and a temperature control assembly, and is characterized in that the inner side wall of the box body is provided with a mounting rack fixedly connected with the inner side wall of the box body, so that a testing bin and an air guide bin are formed in the box body corresponding to the two vertical sides of the mounting rack; the plurality of fixing assemblies are uniformly arranged on the inner side wall of the test bin at intervals along the vertical direction so as to limit and fix the power supply module; the temperature control assembly is arranged in the air guide bin and corresponds to the multiple fixing assemblies so that the temperature of the power modules on the multiple fixing assemblies can be kept constant, in the technical scheme, the fixing assemblies can fix and release the power modules conveniently, and the temperature control assembly is arranged on the air guide bin and corresponds to the multiple fixing assemblies to keep the temperature of the power modules constant. And meanwhile, the circulating fan is arranged to circularly guide the hot air in the box body, so that the test temperatures of the upper part and the lower part in the cavity are kept consistent as far as possible, and the stability and the accuracy of test data of the power supply module are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power module testing, in particular to a power module testing device. Background Art

[0002] The safe startup test of the power module needs to be tested under a certain temperature condition. The test process needs to maintain this temperature range. In addition, the test process involves large current and requires high test accuracy. In order to ensure the accuracy of the test data, a stable connection relationship needs to be formed between the power module and the test equipment. Therefore, a corresponding fixed structure is usually provided to limit and fix the power module. However, the traditional fixed structure has poor flexibility and it is difficult to fix power modules of different specifications and sizes. At the same time, traditional test equipment also needs to take into account efficiency and production capacity during the test process. Therefore, multiple power modules are usually tested in a relatively closed environment at the same time. Generally, a multi-layer frame is provided to receive and fix the power modules. However, this fixing method cannot effectively keep the temperature in the upper and lower test spaces consistent, which will affect the test results of the power module. Utility Model Content

[0003] The main purpose of the utility model is to provide a power module testing device, aiming to solve the problem that the traditional power module testing device cannot well balance the test efficiency and the consistency of the test environment, and easily affects the accuracy of the test result.

[0004] To achieve the above-mentioned purpose, the power module testing device proposed by the utility model comprises:

[0005] A box body, wherein a mounting frame fixedly connected to the inner wall of the box body is provided, so as to form a test chamber and an air guide chamber on two vertical sides of the mounting frame inside the box body;

[0006] A plurality of fixing components are evenly installed on the inner wall of the test chamber in a vertical direction to limit and fix the power module; and

[0007] The temperature control component is arranged in the air guide bin and corresponds to the plurality of fixed components to keep the temperature of the power modules on the plurality of fixed components constant.

[0008] Preferably, an air outlet and an air inlet are respectively provided on the top surface of the box body corresponding to the test chamber and the air guide chamber;

[0009] The temperature control component includes an air inlet device, a heating device and a circulating fan. The heating device is installed at the air inlet. The circulating fan and the air inlet device are respectively installed at both ends of the heating device corresponding to the inner and outer sides of the air inlet, and the air outlet of the circulating fan is arranged vertically downward corresponding to the multiple vertical parts. A partition plate extending horizontally is provided on the mounting frame corresponding to the side of the test chamber, and an air guide port is formed between one lateral end of the partition plate and the inner wall of the box body. The air outlet is arranged above the air guide port, and an exhaust fan is provided on the air outlet.

[0010] Preferably, a plurality of air guide baffles corresponding to the plurality of fixed components are provided in the vertical direction on one side of the mounting frame corresponding to the air guide bin, and the plurality of air guide baffles each include a connecting portion connected to the fixed frame and a vertical portion extending vertically upward along one end of the connecting portion, and the horizontal extension distances of the plurality of connecting portions increase successively from top to bottom so as to evenly divide the transverse cavity of the air guide bin by the plurality of vertical portions.

[0011] Preferably, a plurality of partitions are evenly spaced in the vertical direction on the inner wall of the test chamber, a plurality of the partitions are provided with receiving plates slidably connected thereto, and a plurality of the fixing components are respectively mounted on the plurality of receiving plates; and / or,

[0012] Ventilation holes are arranged on the plurality of partitions.

[0013] Preferably, the fixing assembly includes two first handles and two fixed shafts, and fixing plates fixedly connected to the two horizontal ends close to the supporting plate are respectively provided, and the two fixed shafts are respectively slidably mounted on the two fixed plates, and contact plates fixedly connected to the two opposite ends of the two fixed shafts are respectively provided, and the two first handles are respectively fixedly mounted on the other ends of the two fixed shafts, and a first spring is passed through the two fixed shafts and located in the middle of the first handles and the fixed plates, and the two ends of the first spring are respectively fixedly connected to the first handle and the fixed plate, and the first handle is also provided with a limiting assembly for limiting the end of the fixed shaft at the current position.

[0014] Preferably, the limiting assembly includes a second handle and a locking pin, the second handle is slidably mounted on the inner side of the first handle, and a third spring is provided between the first handle and the second handle, a mounting portion is provided on the side wall of the first handle, a guide wheel is provided on the mounting portion for rotationally connected thereto, and a guide ring is also provided on the downward end of the mounting portion, the locking pin is slidably mounted on the inner side of the guide ring, a connecting rope is provided at one end of the locking pin, and one end of the connecting rope is connected to the second handle after being guided by the guide wheel, a plurality of locking holes corresponding to one end of the locking pin are provided on the receiving plate, and a second spring is provided between the mounting portion and one end of the locking pin away from the receiving plate.

[0015] Preferably, an end portion of the locking pin away from the receiving plate is provided with a convex shaft portion, and one end portion of the second spring is sleeved on the convex shaft portion and connected to the end portion of the locking pin.

[0016] Preferably, the box body is provided with a test chamber door and an air guide chamber door rotatably connected thereto corresponding to the test chamber and the air guide chamber; and / or,

[0017] A control panel is provided on the test chamber door.

[0018] Preferably, a second mounting plate is provided vertically upward along one end of the receiving plate away from the test chamber door, a limiting plate is provided on the second mounting plate, and a plurality of test connectors are passed through the limiting plate.

[0019] Preferably, an auxiliary fire-fighting system is also provided inside the box body, and the auxiliary fire-fighting system includes a flame-retardant gas cylinder and a plurality of monitoring elements, and the plurality of monitoring elements are respectively arranged on the inner wall of the box body in the vertical direction, and a multi-way valve is provided on the gas outlet end of the flame-retardant gas cylinder, and the multi-way valve is provided with a plurality of connecting pipes, one end of the plurality of connecting pipes is correspondingly installed on the plurality of connecting parts, and the plurality of connecting pipes are provided with control valves.

[0020] In the technical solution of the utility model, a plurality of retractable receiving plates are provided to receive the power modules, which makes it more convenient to take and place the power modules. At the same time, the fixing components can fix power modules of various specifications and sizes. The operation of fixing and releasing the power modules is convenient, and the power modules can be kept in a good fixed state during the test, thereby ensuring the accuracy of the test data as much as possible. At the same time, a circulating fan is provided to circulate and guide the hot air in the box, and the hot air from top to bottom is evenly guided to the receiving space of each receiving plate through the air guide baffle, so as to keep the test temperature above and below the cavity as consistent as possible, thereby improving the stability and accuracy of the power module test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the power module testing device provided by the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the fixed component structure in;

[0024] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A in the diagram.

[0025] Description of Figure Numbers:

[0026] Label name Label name 1000 Power module test equipment 301 First pull handle 100 Cabinet 301a Installation Department 101 Test Warehouse 304 Connection rope 102 Air guide chamber 305 Fixed plate 103 Partition 306 Fixed axis 103a Ventilation holes 307 Contact plate 104 Divider 308 First Spring 105 Air guide 401 Second handle 106 Air outlet 402 Locking hole 107 Air Inlet 403 Locking pin 108 Mounting bracket 403a Convex shaft 109 Attachment board 404 Third spring 110 Second mounting plate 405 Guide wheel 111 Limit plate 406 Guide ring 111a Test connector 407 Second spring 112 Test components 501 Flame-retardant cylinder 201 Air guide baffle 502 Monitoring components 201a Connection 503 Multi-way valve 201b Vertical part 504 Connecting pipe 202 Air Inlet Device 505 Control valve 202a Metal filter 601 Air guide door 203 Heating device 602 Test chamber door 204 Circulation fan 602a control Panel 205 Exhaust fan

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] The safe startup test of the power module needs to be tested under a certain temperature condition. The test process needs to maintain this temperature range. In addition, the test process involves large current and requires high test accuracy. In order to ensure the accuracy of the test data, a stable connection relationship needs to be formed between the power module and the test equipment. Therefore, a corresponding fixed structure is usually provided to limit and fix the power module. However, the traditional fixed structure has poor flexibility and it is difficult to fix power modules of different specifications and sizes. At the same time, traditional test equipment also needs to take into account efficiency and production capacity during the test process. Therefore, multiple power modules are usually tested in a relatively closed environment at the same time. Generally, a multi-layer frame is provided to receive and fix the power modules. However, this fixing method cannot effectively keep the temperature in the upper and lower test spaces consistent, which will affect the test results of the power module.

[0032] In order to solve the above problems, the utility model proposes a power module testing device 1000, which aims to solve the problem that the traditional power module testing device cannot well balance the test efficiency and the consistency of the test environment, and easily affects the accuracy of the test results. Figures 1 to 3 A schematic structural diagram of an embodiment of a power module testing device 1000 of the present invention is provided.

[0033] Please refer to Figures 1 to 3 The utility model proposes a power module testing device 1000, including a box body 100, multiple fixed components and a temperature control component. Specifically, the inner side of the box body 100 is divided into a test chamber 101 and an air guide chamber 102 by two sides of a mounting frame 108. Multiple power modules are placed in the test chamber 101 and on multiple fixed components spaced apart in the vertical direction. A temperature control component is provided in the air guide chamber 102. The output end of the temperature control component corresponds to one end of the multiple fixed components in the vertical direction, so as to ensure that the constant temperature wind output by the temperature control component can be delivered to each power module on the fixed component, so as to minimize the temperature difference of the multiple fixed components in the vertical direction, thereby improving the accuracy of the test data.

[0034] Among them, in order to achieve the above-mentioned guarantee that the constant temperature air output by the temperature control component can be delivered to the power module on each of the fixed components, a plurality of air guide baffles 201 are provided on the side of the mounting frame 108 corresponding to the air guide bin 102. Specifically, the connecting portion 201a of the air guide baffle 201 is arranged corresponding to the horizontal position of the fixed component, and the horizontal extension distance of the plurality of connecting portions 201a increases successively from top to bottom, so that the plurality of vertical portions 201b evenly divide the transverse cavity of the air guide bin 102 into a plurality of air guide passages, and the plurality of air guide passages correspond one-to-one to the plurality of fixed components, so that the constant temperature air of the temperature control component can be evenly guided to the plurality of fixed components, thereby maintaining the temperature consistency at the power modules on the plurality of fixed components.

[0035] Specifically, the temperature control component includes an air inlet device 202, a heating device 203 and a circulating fan 204. When working, the heating device 203 at the air inlet 107 is first preheated. After the preheating is completed, the air inlet device 202 located at its outer end introduces external air and heats the air through the heating device 203. After the heating is completed, the heated air is vertically transported downward by the circulating fan 204 on the other end of the heating device 203. The heated air is guided to the multiple fixed components through the multiple air guide baffles 201, so that the power module is in a suitable test temperature range, wherein the constant temperature wind first goes vertically downward, then passes horizontally through the multiple power modules, and then goes vertically upward on the other horizontal side of the test chamber 101. , part of the hot air refluxes into the air guide bin 102 at the partition plate 103, and part of the hot air passes through the air guide port 105 at the end of the partition plate 103, and is discharged from the test bin 101 through the exhaust fan 205 at the air outlet 106 vertically above the air guide port 105. The circulating fan can recycle part of the hot air at the air guide port 105, thereby reducing some energy consumption. In actual application, the air inlet device 202 can be set to a negative pressure fan component or an electrically controlled air valve, etc. As for the heating device 203, the choice is relatively wide. The use of traditional heating wires can ensure the heating effect while well controlling the cost. At the same time, a metal filter 202a is provided at one end of the air inlet device 202 to filter large particles of debris in the air, thereby ensuring the cleanliness of the inner cavity of the box body 100.

[0036] Among them, multiple partitions 103 are arranged from top to bottom on the inner wall of the test chamber 101, and each of the multiple partitions 103 is provided with a receiving plate 109 slidably connected thereto for installing the fixed component. The slidably installed receiving plate 109 is similar to a pull-out drawer structure, and is connected to the partition 103 by an aluminum alloy slide assembly. In actual use, the receiving plate 109 can be pulled out of the test chamber 101 to take and place the power module on the fixed component. At this time, it is more convenient for the operator to take and place the power module. In addition, ventilation holes 103a are also provided on the partition 103, and circulating hot air circulates from one side of the test chamber 101 through the ventilation holes 103a.

[0037] Specifically, when fixing the power module, firstly, the two fixed shafts 306 are pulled apart on the fixed plate 305 by the two first pull handles 301, and then the two fixed shafts 306 are fixed at the current position by the limit assembly on the first pull handle 301. At this time, the operator can release both hands, take the power module, and place the power module in the placement space formed between the ends of the two fixed shafts 306. The first spring 308 is in a stretched state, and then the limit assembly is released to fix the fixed shaft 306. At this time, the first spring 308 is reset. The power module is moved and clamped and fixed by the contact plate 307 at its end. During this operation, when the first spring 308 resets and clamps the power module, the operator can hold the first handle 301 to minimize the impact of the end of the fixed shaft 306 on the unit module. When removing the power module from the receiving plate 109, the operation is the same as above. The power module can be fixed in the above manner, and power modules of different sizes can be fixed. During the operation, the limit assembly can free the operator's hands, making it more convenient to take and place the power module.

[0038] For the convenience of operation, in this embodiment, the limit assembly is integrally arranged on the first handle 301. Specifically, when holding the first handle 301, the second handle 401 can be pulled by the fingers to slide on the first handle 301. At this time, the second handle 401 drives the locking pin 403 to slide on the mounting portion 301a on the first handle 301 through the connecting rope 304. The mounting portion 301a is provided with a guide ring 406 to guide the movement of the locking pin 403. 1a is provided with a guide wheel 405 to guide the connecting rope 304. When the locking pin 403 moves upward, the bottom end is separated from the locking hole 402 on the receiving plate 109. At this time, the fixed shaft 306 can be driven to slide on the fixed plate 305 by pulling the first handle 301. When the operator's fingers release the second handle 401, the third spring 404 and the second spring 407 are reset to drive one end of the locking pin 403 to cooperate with the locking hole 402, thereby fixing the fixed shaft 306 at the current position.

[0039] It should be noted that the locking hole 402 and the locking pin 403 are matched to maintain a certain distance between the two fixed shafts 306 so that the operator can free his hands to take and place the power module. After clamping the power module, one end of the locking pin 403 does not necessarily match the locking hole 402.

[0040] One end of the locking pin 403 is provided with a convex shaft portion 403a which penetrates one end of the second spring 407 , so that during the movement of the locking pin 403 , the second spring 407 can be effectively prevented from falling off.

[0041] In addition, the box body 100 is provided with a test chamber door 602 and an air guide chamber 102 door rotatably connected thereto corresponding to the test chamber 101 and the air guide chamber 102. The corresponding chamber doors can open the corresponding chambers for easy maintenance, while keeping the interior of the box body 100 in a relatively isolated state.

[0042] When testing the unit module, the test connector 111a on the limit plate 111 can be pulled to slide at the limit hole on the limit plate 111, and then one end of the test connector 111a is connected to the plug interface of the power module, and tested by the test element 112. During this process, the limit plate 111 can limit the movement of the connecting wire of the test connector 111a, so as to make its connection with the power module more stable as possible.

[0043] A plurality of monitoring elements 502 are disposed inside the box 100, and can monitor the maximum temperature inside the box 100 and whether smoke is generated inside the box 100. When the temperature inside the box 100 is higher than a preset temperature, or when smoke is generated and a fire is about to occur, a plurality of control valves 505 are opened, and the flame-retardant gas inside the flame-retardant cylinder 501 is introduced to the plurality of power modules through a plurality of connecting pipes 504, thereby ensuring the safety of the power modules as much as possible. At the same time, the start and stop operations of the components inside the box 100 can be controlled by the control panel 602a on the test chamber door 602.

[0044] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A power module testing device, characterized in that: include: A box body, wherein a mounting frame fixedly connected to the inner wall of the box body is provided, so as to form a test chamber and an air guide chamber on two vertical sides of the mounting frame inside the box body; A plurality of fixing components are evenly installed on the inner wall of the test chamber in a vertical direction to limit and fix the power module; and The temperature control component is arranged in the air guide bin and corresponds to the plurality of fixed components to keep the temperature of the power modules on the plurality of fixed components constant.

2. The power module testing device according to claim 1, characterized in that: A plurality of air guide baffles corresponding to the plurality of fixed components are provided in the vertical direction on one side of the mounting frame corresponding to the air guide bin, and the plurality of air guide baffles each include a connecting portion connected to the fixed frame and a vertical portion extending vertically upward along one end of the connecting portion, and horizontal extension distances of the plurality of connecting portions increase successively from top to bottom so as to evenly divide the transverse cavity of the air guide bin by the plurality of vertical portions.

3. The power module testing device according to claim 2, characterized in that: An air outlet and an air inlet are respectively arranged on the top surface of the box body corresponding to the test chamber and the air guide chamber; The temperature control component includes an air inlet device, a heating device and a circulation fan, the heating device is installed at the air inlet, the circulation fan and the air inlet device are respectively installed at both ends of the heating device corresponding to the inner and outer sides of the air inlet, and the air outlet of the circulation fan is vertically arranged downward corresponding to the plurality of vertical parts, a partition plate extending laterally is arranged on the mounting frame corresponding to the side of the test chamber, an air guide port is formed between one lateral end of the partition plate and the inner side wall of the box body, the air outlet is arranged correspondingly above the air guide port, and an exhaust fan is arranged on the air outlet; and / or, A metal filter is provided at one end of the air inlet device.

4. The power module testing device according to claim 1, characterized in that: A plurality of partitions are evenly spaced in the vertical direction on the inner wall of the test chamber, each of the plurality of partitions is provided with a receiving plate slidably connected thereto, and the plurality of fixing components are respectively mounted on the plurality of receiving plates; and / or, Ventilation holes are arranged on the plurality of partitions.

5. The power module testing device according to claim 4, characterized in that: The fixing assembly includes two first handles and two fixed shafts, and fixing plates fixedly connected to the two horizontal ends close to the supporting plate are respectively provided, and the two fixed shafts are respectively slidably mounted on the two fixed plates, and the two opposite ends of the two fixed shafts are respectively provided with contact plates fixedly connected to the two fixed shafts, and the two first handles are respectively fixedly mounted on the other ends of the two fixed shafts, and a first spring is passed through the two fixed shafts and located in the middle position between the first handles and the fixing plate, and the two ends of the first spring are respectively fixedly connected to the first handle and the fixing plate, and the first handle is also provided with a limiting assembly for limiting the end of the fixed shaft to the current position.

6. The power module testing device according to claim 5, characterized in that: The limiting assembly includes a second handle and a locking pin, the second handle is slidably mounted on the inner side of the first handle, and a third spring is provided between the first handle and the second handle, a mounting portion is provided on the side wall of the first handle, a guide wheel is provided on the mounting portion and is rotatably connected thereto, and a guide ring is also provided on the downward end of the mounting portion, the locking pin is slidably mounted on the inner side of the guide ring, a connecting rope is provided at one end of the locking pin, and one end of the connecting rope is connected to the second handle after being guided by the guide wheel, a plurality of locking holes corresponding to one end of the locking pin are provided on the connecting plate, and a second spring is provided between the end of the locking pin away from the connecting plate and the mounting portion.

7. The power module testing device according to claim 6, characterized in that: A convex shaft portion is provided at one end of the locking pin away from the receiving plate, and one end of the second spring is sleeved on the convex shaft portion and connected to the end of the locking pin.

8. The power module testing device according to claim 5, characterized in that: The box body is provided with a test chamber door and an air guide chamber door rotatably connected thereto corresponding to the test chamber and the air guide chamber; and / or, A control panel is provided on the test chamber door.

9. The power module testing device according to claim 8, characterized in that: A second mounting plate is vertically arranged on one end of the receiving plate away from the test chamber door, and a limiting plate is arranged on the second mounting plate. A plurality of test connectors are passed through the limiting plate.

10. The power module testing device according to claim 2, characterized in that: An auxiliary fire-fighting system is also provided inside the box, and the auxiliary fire-fighting system includes a flame-retardant gas cylinder and a plurality of monitoring elements. The plurality of monitoring elements are respectively arranged on the inner wall of the box in the vertical direction. A multi-way valve is provided on the gas outlet end of the flame-retardant gas cylinder, and the multi-way valve is provided with a plurality of connecting pipes. One end of the plurality of connecting pipes is correspondingly installed on the plurality of connecting parts, and the plurality of connecting pipes are provided with control valves.

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