CN117214646A - Power loss testing device for wide forbidden band power device - Google Patents
Power loss testing device for wide forbidden band power device Download PDFInfo
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- CN117214646A CN117214646A CN202311243887.2A CN202311243887A CN117214646A CN 117214646 A CN117214646 A CN 117214646A CN 202311243887 A CN202311243887 A CN 202311243887A CN 117214646 A CN117214646 A CN 117214646A
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 42
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- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 230000001737 promoting effect Effects 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000007921 spray Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000004321 preservation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
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- 238000011056 performance test Methods 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a power loss testing device of a wide band gap power device, which comprises a device body, wherein a door body is arranged on the device body, and the device further comprises: the detection substrate is used for conducting power-on test on the device; a collision mechanism for pushing the device mounted on the detection substrate to collide; the environment adjusting mechanism is used for adjusting the environment in the device body; the balance mechanism is used for promoting the detection substrate to be in a horizontal balance state and comprises a support rod, a piston plate, a limit frame and a limit assembly arranged on the device body, wherein the piston plate is fixedly connected with the support rod, one end of the support rod extends into the first cavity and is in sliding fit with the device body, and liquid is filled in the first cavity; the invention can evaluate the wide forbidden band performance by detecting the power loss of the broadband power device after collision, and can detect the wide forbidden band power loss in different environments.
Description
Technical Field
The invention belongs to the technical field of detection, and particularly relates to a power loss testing device for a wide bandgap power device.
Background
The wide bandgap semiconductor power device has the advantages of high switching speed, low on-resistance and the like, and is applied to the power electronic converter in an increasingly large range.
The wide band gap power device generally needs performance test when leaving the factory, for example, the power loss test of the wide band gap power device under different environments is generally realized by adopting an environment simulation mode, and the wide band gap power device power loss test device which can collide the wide band gap power device and compare the power loss change before and after the collision so as to evaluate the performance of the wide band gap power device is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a power loss testing device for a wide bandgap power device, which solves the problems.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a wide forbidden band power device power loss testing arrangement, includes the device body, install the door body on the device body, still include:
the detection substrate is used for conducting power-on test on the device;
the collision mechanism is arranged on the device body and used for pushing devices arranged on the detection substrate to collide;
the environment adjusting mechanism is arranged on the device body and used for adjusting the environment in the device body; and
the balance mechanism is arranged on the device body and used for promoting the detection substrate to be in a horizontal balance state, the balance mechanism comprises a supporting rod, a piston plate, a limiting frame and a limiting assembly arranged on the device body, the limiting frame is arranged in a first cavity formed in the device body and is fixedly connected with the device body, the piston plate is in sliding fit with the limiting frame, the piston plate and one end of the piston plate extend into the first cavity and are fixedly connected with the supporting rod which is in sliding fit with the device body, and liquid is filled in the first cavity.
Based on the technical scheme, the invention also provides the following optional technical schemes:
the technical scheme is as follows: the limiting assembly comprises an arc-shaped pressing plate and a first linear motion piece, wherein the arc-shaped pressing plate is fixedly connected to the output end of the first linear motion piece, and the first linear motion piece is fixedly connected to the device body.
The technical scheme is as follows: the collision mechanism comprises a limit slide block, the detection substrate is detachably connected to the limit slide block, the limit slide block is in sliding fit with the device body, the limit slide block is in sliding fit with a guide rod fixedly connected to the device body, and the collision mechanism further comprises:
the displacement assembly is arranged on the device body and used for pushing the limit sliding block to perform linear motion in the horizontal direction; and
the energy supply assembly is arranged on the device body and used for providing kinetic energy for the limiting slide block.
The technical scheme is as follows: the displacement assembly comprises a first plate body, a second plate body and a second linear motion piece, wherein the first plate body is fixedly connected to the limiting sliding block, the first plate body is detachably connected to the second plate body through a magnetic attraction unit, and the second plate body is fixedly connected with the output end of the second linear motion piece fixedly connected to the device body.
The technical scheme is as follows: the energy supply assembly comprises a push rod, a sleeve and a first elastic piece, wherein the push rod is in sliding fit with the sleeve, one end of the push rod is fixedly connected with the limiting slide block, the other end of the push rod extends into the sleeve, the elastic piece is located in the sleeve, two ends of the elastic piece are respectively and correspondingly fixedly connected with the push rod and the sleeve, and the sleeve is fixedly connected with the end part of the sleeve and the device body.
The technical scheme is as follows: the magnetic attraction unit comprises an inserting rod, a second elastic piece and two groups of electromagnets, wherein the inserting rod is in sliding fit with a limiting sliding groove formed in a second plate body, one end of the inserting rod is fixedly connected with the second elastic piece fixedly arranged in the limiting sliding groove, one group of electromagnets are embedded in a groove formed in a first plate body and are fixedly connected to the second plate body, and the other group of electromagnets are embedded in the other end of the inserting rod.
The technical scheme is as follows: the environment adjusting mechanism comprises a first pipeline, a second pipeline, a first spray head, a second spray head, a temperature sensor and a humidity sensor, wherein the first pipeline penetrates through the device body and is fixedly connected with the device body, the second pipeline penetrates through the first pipeline and is fixedly connected with the first pipeline, the first spray head is embedded between the first pipeline and the second pipeline and is fixedly connected with the first pipeline and the second pipeline, the second spray head is fixedly connected with the second pipeline, the first valve body is fixedly connected with the second pipeline in an embedded mode, and the temperature sensor and the humidity sensor are fixedly connected with the device body.
The technical scheme is as follows: the device comprises a device body, and is characterized in that a third pipeline is fixedly connected to the device body, one end of the third pipeline extends into the device body, the other end of the third pipeline extends out of the device body, and a second valve body is fixedly connected in the third pipeline.
The technical scheme is as follows: the device body is internally provided with a circulation assembly for promoting internal circulation of gas inside the device body.
The technical scheme is as follows: the circulating assembly comprises a box body, a fan assembly and air holes, wherein the box body is fixedly connected to the upper end inside the device body, the two fan assemblies are symmetrically embedded and fixedly connected to the box body, and the air holes are symmetrically formed in two sides of the box body.
Advantageous effects
The invention provides a power loss testing device of a wide bandgap power device, which has the following beneficial effects compared with the prior art:
1. according to the invention, as the liquid is filled in the first cavity and the four support rods are in sliding fit with the device body, when the fall exists on the ground contacted with the support rods, the support rods positioned at higher positions push the piston plate to squeeze the liquid positioned in the first cavity to flow to the support rods positioned at lower positions, at the moment, the liquid pushes the other piston plate fixedly connected with the support rods to drive the support rods to perform linear motion in the vertical direction until the whole device body is in a horizontal state, namely the detection substrate is in a horizontal state, at the moment, the limiting assembly is started to limit the four support rods, and the device is mounted on the detection substrate, so that the device can be mounted on the detection substrate in a horizontal state, at the moment, a related technician starts the collision mechanism to enable the device mounted on the detection substrate to collide with a certain kinetic energy, so that the device can be subjected to a test of power loss change before and after collision, and the technical effect of evaluating and testing the quality of the device can be realized, and at the same time, the related technician can adjust the temperature and humidity in the device body through the environment adjusting mechanism, and perform different temperature and lower power loss tests on the device mounted on the detection substrate, so that the quality of the device is evaluated;
2. the displacement assembly can drive the limit sliding block to perform linear motion in the horizontal direction, so that the limit sliding block can perform reset processing, meanwhile, the reset limit sliding block can compress the output end of the energy supply assembly, the energy supply assembly output end is energized, when a device mounted on the detection substrate is required to be subjected to a collision test, the limit of the limit sliding block by the displacement assembly is only required to be released, the detection substrate mounted on the limit sliding block can perform linear motion in the horizontal direction at a certain initial speed under the collision of the output end of the energy supply assembly until the detection substrate collides with a rubber pad mounted on the device body, and at the moment, related technicians can complete the technical effect of detecting the quality of the device by comparing the power loss of the device mounted on the detection substrate before and after the collision (if the internal unit connection of the device is not tight enough, the device can shake after the collision, and the power loss of the device is caused to rise);
3. the related technician can introduce high-pressure hot gas into the device body through the first pipeline, two gases collide with each other in the device body at the moment, the two gases are filled in the device body rapidly, meanwhile, the temperature sensor can monitor the temperature of the device body in real time until the temperature in the device body reaches the preset temperature, if the humidity in the device body is required to be changed, the related technician releases the limit of the limit component on the support rod and opens the first valve body, at the moment, the device body moves linearly in the vertical direction relative to the support rod under the self gravity, the piston plate extrudes liquid in the first cavity, and the liquid is sprayed into the device body from the second spray head in an atomization state so as to change the humidity in the device body, so that the temperature and the humidity in the device body are changed, the related technician can be prompted to test the power loss of the device under different temperatures and humidity states, and meanwhile, the liquid in the first cavity can be used for carrying out heat preservation treatment on the space in the device body for the heat preservation layer;
4. according to the invention, the fan assembly is matched with the box body to drive the air in the device body to flow interactively between the device body and the cavity in the box body, so that the cold air and the hot air in the device body are quickly mixed, the temperature lifting efficiency in the device body is improved, and meanwhile, the mist sprayed in the second pipeline and the gas in the device body can be fully mixed.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the present invention.
Fig. 3 is a schematic structural view of the balancing mechanism of the present invention.
Fig. 4 is a schematic structural view of the collision mechanism of the present invention.
Fig. 5 is a schematic structural view of the environment adjusting mechanism of the present invention.
FIG. 6 is a schematic view of the circulation assembly of the present invention.
Reference numerals annotate: 1. a device body; 101. a first cavity; 2. a door body; 3. a balancing mechanism; 301. a support rod; 302. a piston plate; 303. a limit frame; 304. a limit component; 3041. an arc pressing plate; 3042. a first linear motion member; 4. an environment adjustment mechanism; 401. a first pipe; 402. a second pipe; 403. a first nozzle; 404. a second nozzle; 5. detecting a substrate; 6. a collision mechanism; 601. a limit sliding block; 602. a displacement assembly; 6021. a first plate body; 6022. a second plate body; 6023. a second linear motion member; 603. an energy supply assembly; 6031. a push rod; 6032. a sleeve; 604. a guide rod; 7. a circulation assembly; 701. a case; 702. a fan assembly; 703. and a wind hole.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Referring to fig. 1 to 3, a power loss testing device for a wide bandgap power device according to an embodiment of the present invention includes a device body 1, a door body 2 is installed on the device body 1, and the device further includes:
a detection substrate 5 for conducting an energization test on the device;
a collision mechanism 6 mounted on the apparatus body 1 for pushing the devices mounted on the detection substrate 5 to collide;
an environment adjusting mechanism mounted on the device body 1 for adjusting the environment in the device body 1; and
the balance mechanism 3 is installed on the device body 1 and is used for promoting the detection substrate 5 to be in a horizontal balance state, the balance mechanism 3 comprises a supporting rod 301, a piston plate 302, a limiting frame 303 and a limiting assembly 304 installed on the device body 1, the limiting frame 303 is arranged in a first cavity 101 formed in the device body 1 and is fixedly connected with the device body 1, the piston plate 302 is in sliding fit with the limiting frame 303, the piston plate 302 and one end of the piston plate extend into the first cavity 101 and are fixedly connected with the supporting rod 301 which is in sliding fit with the device body 1, and liquid (not shown in the drawing) is filled in the first cavity 101.
Preferably, the limiting assembly 304 includes an arc-shaped pressing plate 3041 and a first linear moving member 3042, the arc-shaped pressing plate 3041 is fixedly connected to the output end of the first linear moving member 3042, and the first linear moving member 3042 is fixedly connected to the device body. The purpose of this arrangement is to achieve the technical effect of limiting 301 by pushing the arc-shaped pressing plate 3041 against 301 by the first linear motion member 3042.
In the embodiment of the invention, since the first cavity 101 is filled with liquid, and the four support rods 301 are in sliding fit with the device body 1, when the ground contacted by the support rods 301 has a fall, the support rods 301 positioned at a higher position push the piston plate 302 to squeeze the liquid positioned in the first cavity 101 to flow to the support rods 301 positioned at a lower position, at the moment, the liquid pushes the other piston plates 302 fixedly connected with the support rods 301 to drive the support rods 301 to perform linear motion in the vertical direction until the whole device body 1 is in a horizontal state, namely the detection substrate 5 is in a horizontal state, at the moment, the limit component 304 is started to limit the four support rods 301, and the device is mounted on the detection substrate 5, so that the device can be mounted on the detection substrate 5 in a horizontal state, at the moment, the related technician starts the collision mechanism 6 to give the device mounted on the detection substrate 5 a certain kinetic energy to enable the device to collide, so that the device can be tested for evaluating the quality of the device, the technical effect of evaluating and testing the quality of the device can be achieved, at the same time, the related technician can adjust the temperature and humidity in the device body 1 until the whole device is in a horizontal state, namely the detection substrate 5 is in a horizontal state, the device is in a horizontal state, the temperature state, and the device is mounted on the temperature and the humidity on the device is different, and the quality of the device can be evaluated.
Referring to fig. 1, 2 and 4, as an embodiment of the present invention, the collision mechanism 6 includes a limit slider 601, the detection substrate 5 is detachably connected to the limit slider 601, the limit slider 601 is slidably engaged with the device body 1, and the limit slider 601 is slidably engaged with a guide rod 604 fixedly connected to the device body 1, and further includes:
a displacement assembly 602, mounted on the device body 1, for pushing the limit slider 601 to perform linear motion in a horizontal direction; and
the energy supply component 603 is installed on the device body 1 and is used for providing kinetic energy for the limit slider 601.
Preferably, the detection substrate 5 is detachably connected to the limit slider 601 through a bolt assembly, and one skilled in the art will recognize that the purpose of this arrangement is to limit the detection substrate 5 to the limit slider 601, so in some embodiments, the detection substrate 5 may also be detachably connected to the limit slider 601 through a snap connection, or fixedly connected to the limit slider 601 through welding.
Preferably, the displacement assembly 602 includes a first plate 6021, a second plate 6022 and a second linear motion member 6023, the first plate 6021 is fixedly connected to the limit slider 601, the first plate 6021 is detachably connected to the second plate 6022 through a magnetic unit (not shown), and the second plate 6022 is fixedly connected to an output end of the second linear motion member 6023 fixedly connected to the device body 1. The purpose of this kind of setting is, utilize second linear motion spare 6023 push-pull second plate body 6022, make second plate body 6022 carry out the linear motion in horizontal direction in device body 1, second plate body 6022 drives first plate body 6021 and promotes spacing slider 601 and carry out the linear motion in horizontal direction, spacing slider 601 promotes the mode that detection base plate 5 who is connected with it carries out synchronous linear motion, realize making detection base plate 5 collide the back and can reset, can control the position of spacing slider 601 through the magnetism simultaneously, carry out spacing processing to spacing slider 601.
Preferably, the magnetic unit includes a plunger (not shown in the drawing), a second elastic member (not shown in the drawing), two sets of electromagnets (not shown in the drawing), the plunger is slidably matched with a limit chute (not shown in the drawing) formed on the second plate 6022, one end of the plunger is fixedly connected with the second elastic member fixedly arranged in the limit chute, one set of electromagnets are embedded in a slot (not shown in the drawing) formed on the first plate 6021 and are fixedly connected to the second plate 6022, and the other set of electromagnets are embedded in and fixedly connected to the other end of the plunger. The purpose of this kind of setting is that utilizing the like-pole repulsion of electro-magnet, the nature that opposite sex attracts, push-and-pull inserted bar carries out the linear motion in vertical direction, makes the inserted bar can insert the trench or retract the mode in the spacing spout, realizes the controllable technological effect of limiting first plate 6021 on second plate 6022.
In particular, the second elastic member is a spring, and it should be understood by those skilled in the art that such an arrangement is intended to elastically support the insert rod, so that in some embodiments, the second elastic member may be further provided as any one of a compression spring or an elastic steel plate.
Preferably, the energy supply assembly 603 includes a push rod 6031, a sleeve 6032 and a first elastic member (not shown in the figure), the push rod 6031 is slidably matched with the sleeve 6032, one end of the push rod 6031 is fixedly connected with the limit slider 601, the other end of the push rod 6031 extends into the sleeve 6032, the elastic member is located in the sleeve 6032, two ends of the elastic member are respectively and correspondingly fixedly connected with the push rod 6031 and the sleeve 6032, and the sleeve 6032 is fixedly connected with the end part of the device body 1. The limiting slide block 601 is driven by the displacement assembly 602 to perform linear motion in the horizontal direction, at this time, the limiting slide block 601 can push the push rod 6031 to extrude the first elastic piece located in the sleeve 6032 and prompt the first elastic piece to perform linear motion in the horizontal direction along the length direction of the sleeve 6032, when the detection substrate 5 needs to be energized, the limiting of the limiting slide block 601 by the displacement assembly 602 is only required to be released, the compressed first elastic piece can be utilized to energize the detection substrate 5, the detection substrate 5 is prompted to perform linear motion in the horizontal direction, and the first elastic piece is impacted by a rubber pad (not marked in the figure) fixedly connected in the device body 1 and matched with the collision mechanism 6, so that the device is prompted to perform collision vibration.
In particular, the first elastic member is a spring, and it should be understood by those skilled in the art that this is provided for the purpose of elastically supporting the push rod 6031, so that in some embodiments, the first elastic member may be provided as an elastic steel plate or other part having elastic contraction energy.
In the embodiment of the invention, the displacement assembly 602 can drive the limit slider 601 to perform linear motion in the horizontal direction, so that the limit slider 601 can perform reset processing, meanwhile, the reset limit slider 601 can compress the output end of the energy supply assembly 603, the energy supply assembly 603 output end is energized, when a device mounted on the detection substrate 5 needs to be subjected to a collision test, the limit of the limit slider 601 by the displacement assembly 602 is only required to be removed, the detection substrate 5 mounted on the limit slider 601 can perform linear motion in the horizontal direction at a certain initial speed under the collision of the output end of the energy supply assembly 603 until the detection substrate 5 collides with a rubber pad mounted on the device body 1, and at the moment, related technicians can complete the technical effect of detecting the quality of the device by comparing the power loss of the device mounted on the detection substrate 5 before and after the collision (if the connection of the internal units of the device is not tight enough, the device can shake after the collision, and the power loss of the device is caused).
Referring to fig. 2, 4 and 5, the environment adjusting mechanism includes a first pipe 401, a second pipe 402, a first nozzle 403, a second nozzle 404, a temperature sensor (not shown) and a humidity sensor (not shown), the first pipe 401 penetrates through the device body 1 and is fixedly connected with the device body 1, the second pipe 402 penetrates through the first pipe 401 and is fixedly connected with the first pipe 401, the first nozzle 403 is embedded between the first pipe 401 and the second pipe 402 and is fixedly connected with the first pipe 402, the second nozzle 404 is fixedly connected with the second pipe 402, a first valve body (not shown) is embedded in the second pipe 402 and is fixedly connected with the second pipe, and the temperature sensor (not shown) and the humidity sensor (not shown) are both fixedly connected with the device body 1.
Preferably, a third pipe (not shown) is fixedly connected to the device body 1, one end of the third pipe extends into the device body 1, the other end extends out of the device body 1, and a second valve body (not shown) is fixedly connected to the third pipe. The purpose of this arrangement is that when the second valve body is in the open state, the cavity in which the detection substrate 5 is placed in the device body 1 can be caused to be in an air pressure balance state with the external environment, and if the second valve body is in the closed state, air is injected into the cavity through the environment adjusting mechanism 4, so that the air pressure in the cavity can be promoted to rise, and the air pressure balance state with the external environment can not be maintained.
In the embodiment of the invention, a related technician can introduce high-pressure hot gas into the device body 1 through the first pipeline 401, at this time, two gases collide with each other in the device body 1 to quickly fill the inside of the device body 1, meanwhile, the temperature sensor can monitor the temperature of the device body 1 in real time until the temperature in the device body 1 reaches a preset temperature, if the humidity in the device body 1 is to be changed, the related technician releases the limit of the limit component 304 on the support rod 301 and opens the first valve body, at this time, the device body 1 performs linear motion in the vertical direction relative to the support rod 301 under the self-gravity, the piston plate 302 extrudes liquid in the first cavity 101, and the liquid is sprayed into the device body 1 from the second spray head 404 in an atomized state to change the humidity in the device body 1.
Preferably, a circulation assembly 7 for promoting internal circulation of gas in the device body 1 is disposed in the device body 1, the circulation assembly 7 includes a box 701, a fan assembly 702 and a wind hole 703, the box 701 is fixedly connected to the upper end in the device body 1, two fan assemblies 702 are symmetrically embedded and fixedly connected to the box 701, and wind holes 703 are symmetrically formed in two sides of the box 701.
In the embodiment of the present invention, the fan assembly 702 is used in cooperation with the box 701 to drive the air in the device body 1 to flow alternately between the device body 1 and the internal cavity of the box 701, so as to realize rapid mixing of the cold air and the hot air in the device body 1, improve the temperature lifting efficiency in the device body 1, and simultaneously fully mix the mist sprayed in the second pipeline 402 with the air in the device body 1.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a wide forbidden band power device power loss testing arrangement, includes device body (1), install door body (2) on device body (1), its characterized in that still includes:
a detection substrate (5) for conducting an electrical test on the device;
a collision mechanism (6) mounted on the device body (1) for pushing the devices mounted on the detection substrate (5) to collide;
the environment adjusting mechanism is arranged on the device body (1) and is used for adjusting the environment in the device body (1); and
balance mechanism (3), install on device body (1) for impel to detect base plate (5) and be in the horizontal balanced state, balance mechanism (3) include bracing piece (301), piston board (302), spacing frame (303) and install spacing subassembly (304) on device body (1), spacing frame (303) set up in first cavity (101) of seting up on device body (1) and with device body (1) fixed connection, piston board (302) and spacing frame (303) sliding fit, piston board (302) and one end extend to in first cavity (101) and with device body (1) sliding fit's bracing piece (301) fixed connection, first cavity (101) intussuseption is filled with liquid.
2. The wide bandgap power device power loss testing apparatus of claim 1, wherein said limiting assembly (304) comprises an arc-shaped pressing plate (3041) and a first linear motion member (3042), said arc-shaped pressing plate (3041) is fixedly connected to an output end of the first linear motion member (3042), and said first linear motion member (3042) is fixedly connected to the apparatus body.
3. The wide bandgap power device power loss testing apparatus of claim 1, wherein said collision mechanism (6) comprises a limit slider (601), said detection substrate (5) is detachably connected to the limit slider (601), said limit slider (601) is in sliding fit with the apparatus body (1), said limit slider (601) is in sliding fit with a guide rod (604) fixedly connected to the apparatus body (1), and further comprising:
the displacement assembly (602) is arranged on the device body (1) and is used for pushing the limit slider (601) to perform linear motion in the horizontal direction; and
the energy supply assembly (603) is arranged on the device body (1) and is used for providing kinetic energy for the limit sliding block (601).
4. The wide bandgap power device power loss testing apparatus according to claim 3, wherein said displacement assembly (602) comprises a first plate body (6021), a second plate body (6022) and a second linear motion member (6023), said first plate body (6021) is fixedly connected to a limit slider (601), said first plate body (6021) is detachably connected to said second plate body (6022) through a magnetic attraction unit, and said second plate body (6022) is fixedly connected to an output end of said second linear motion member (6023) fixedly connected to said apparatus body (1).
5. The wide bandgap power device power loss testing device according to claim 3, wherein the energy supply assembly (603) comprises a push rod (6031), a sleeve (6032) and a first elastic piece, the push rod (6031) is in sliding fit with the sleeve (6032), one end of the push rod (6031) is fixedly connected with the limit slider (601), the other end of the push rod (6031) extends into the sleeve (6032), the elastic piece is located in the sleeve (6032), two ends of the elastic piece are respectively and fixedly connected with the push rod (6031) and the sleeve (6032), and the sleeve (6032) is fixedly connected with the end part of the device body (1).
6. The power loss testing device of the wide bandgap power device according to claim 4, wherein the magnetic attraction unit comprises an inserting rod, a second elastic piece and two groups of electromagnets, the inserting rod is in sliding fit with a limiting chute formed in a second plate body (6022), one end of the inserting rod is fixedly connected with the second elastic piece fixedly arranged in the limiting chute, one group of electromagnets are embedded into a groove formed in a first plate body (6021) and are fixedly connected to the second plate body (6022), and the other group of electromagnets are embedded into and fixedly connected to the other end of the inserting rod.
7. The wide bandgap power device power loss testing device according to claim 1, wherein said environment adjusting mechanism comprises a first pipe (401), a second pipe (402), a first nozzle (403), a second nozzle (404), a temperature sensor and a humidity sensor, said first pipe (401) penetrates through the device body (1) and is fixedly connected with the device body (1), said second pipe (402) penetrates through the first pipe (401) and is fixedly connected with the first pipe (401), said first nozzle (403) is embedded between the first pipe (401) and the second pipe (402) and is fixedly connected with the first pipe (402), said second nozzle (404) is fixedly connected with the second pipe (402), said second pipe (402) is embedded with a first valve body, and said temperature sensor and said humidity sensor are fixedly connected with the device body.
8. The power loss testing device of the wide bandgap power device according to claim 7, wherein a third pipeline is fixedly connected to the device body (1), one end of the third pipeline extends into the device body (1) and the other end extends out of the device body (1), and a second valve body is fixedly connected to the third pipeline.
9. The wide bandgap power device power loss testing device according to claim 1, wherein a circulation assembly (7) for promoting internal circulation of gas inside the device body (1) is arranged inside the device body (1).
10. The wide bandgap power device power loss testing device according to claim 9, wherein the circulating assembly (7) comprises a box body (701), a fan assembly (702) and air holes (703), the box body (701) is fixedly connected to the upper end inside the device body (1), the two fan assemblies (702) are symmetrically embedded and fixedly connected to the box body (701), and the air holes (703) are symmetrically formed in two sides of the box body (701).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN118031894A (en) * | 2024-04-12 | 2024-05-14 | 中国海洋大学 | Beach erosion and deposition monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118031894A (en) * | 2024-04-12 | 2024-05-14 | 中国海洋大学 | Beach erosion and deposition monitoring device |
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