CN214794886U

CN214794886U - Power module testboard

Info

Publication number: CN214794886U
Application number: CN202023186057.5U
Authority: CN
Inventors: 王锦迪
Original assignee: Nanjing Hengqian Electronic Technology Co ltd
Current assignee: Nanjing Hengqian Electronic Technology Co ltd
Priority date: 2020-12-26
Filing date: 2020-12-26
Publication date: 2021-11-19
Anticipated expiration: 2030-12-26

Abstract

The utility model discloses a power module testboard, load the load platform and air exhaust the wall including main testboard assembly, power module load platform, load, main testboard assembly front end is located to power module load platform, main testboard assembly right side is located to load platform, main testboard assembly rear end is located to the wall of airing exhaust, main testboard assembly front end is equipped with the switch and uses the timer with the disturbance, main testboard assembly includes main testboard box, motor, elastic coupling, preceding backup pad, back backup pad, screw rod, guide bar, slider, insulating step, conducting rod, fixed screw, shell fragment and contact rail. The utility model relates to a power supply test technical field specifically is a power module testboard that easy operation, optional switch mode, automatic continuation test, simulation AC end wiring are unusual.

Description

Power module testboard

Technical Field

The utility model relates to a power supply test technical field specifically is a power module testboard.

Background

With the development of science and technology, various electrical appliances are more and more, and the power supply technology is also developed and advanced. In electric equipment, mains supply is often required to be converted into different voltages, alternating current is often required to be converted into direct current, the power supply technology is widely applied, and the performance of a power supply is greatly improved under the condition that the functions of a power supply chip are increasingly powerful. Compared with the traditional power supply in the past, the circuit with the special power supply chip is adopted in the power supply, various indexes of the power supply are greatly improved, for example, the size of the power supply is greatly reduced, the service life of the power supply is greatly prolonged, the EMI conduction radiation of the power supply is effectively reduced, the temperature resistance range of the power supply is wider and wider, and the voltage resistance value and the surge impact resistance of the power supply are obviously improved. The modern power supply is manufactured by adopting means of modular design, modular production and modular test, so that the production efficiency is improved. Because the power circuit is more and more complicated, for example, a switching power supply is the most widely used power supply structural form with the highest power supply conversion efficiency at present, the switching power supply can be divided into a forward-striking switching power supply and a back-striking switching power supply, the forward-striking switching power supply can realize power output in a larger range, the back-striking power supply can have very high efficiency, and the power supply energy conversion loss is very small. Circuits inside the switching power supply are relatively complex correspondingly, for example, a primary side voltage sampling circuit, a primary side current sampling circuit, a secondary side voltage sampling feedback circuit, a secondary side current sampling feedback circuit, a primary side switching control circuit, a power factor compensation circuit, an overload short-circuit protection circuit and the like are usually arranged inside the switching power supply related to a power supply chip, and in the actual use process of the switching power supply, the switching power supply can not output normally or work abnormally, for example, the switching power supply can not work after being powered on and powered off for a plurality of times, when the AC connecting line of the switching power supply is in poor contact, the switching power supply is damaged, and the reason of the phenomenon is not unique, for example, the primary side switching control circuit is abnormal, the voltage of the secondary side can be increased suddenly to reach the upper limit of the withstand voltage of electronic components, causing damage to the electronic components. Under the large background that modular design, modular production and modular test are mostly adopted in power supply manufacturing, how to accurately find potential problems of the switching power supply, such as the problem of damage to the switching power supply caused by poor contact of an AC end or frequent switching, is a problem which needs to be solved urgently in the modular test stage of the switching power supply.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned condition, for overcoming current technical defect, the utility model provides a power module testboard that easy operation, optional switch mode, automatic continuous test, simulation AC end wiring are unusual.

The utility model adopts the following technical scheme: a power module test bench comprises a main test bench assembly, a power module loading platform, a load loading platform and an air exhaust wall, wherein the power module loading platform is arranged at the front end of the main test bench assembly, the load loading platform is arranged on the right side of the main test bench assembly, the air exhaust wall is arranged at the rear end of the main test bench assembly, a timer for switching and a timer for disturbance are arranged at the front end of the main test bench assembly, the main test bench assembly comprises a main test bench box body, a motor, an elastic coupling, a front support plate, a rear support plate, a screw rod, a guide rod, a slide block, an insulating step, a conductive rod, a fixing screw, an elastic sheet and a contact track, the motor is arranged on the upper surface of the main test bench box body, the elastic coupling is arranged on a motor output shaft, the front support plate and the rear support plate are arranged on the upper surface of the main test bench box body, and the front support plate and the rear support plate are provided with circular openings, the two ends of the screw rod are respectively and rotatably arranged on the front supporting plate and the rear supporting plate, one end of the screw rod is connected with the output shaft of the motor through an elastic coupling, the two ends of the guide rod are respectively arranged on the front supporting plate and the rear supporting plate, the guide rod is arranged in parallel with the screw rod, the center of the slide block is provided with a threaded hole, the slide block is arranged on the screw rod through threaded connection, the slide block is provided with a guide rod hole, the slide block is slidably arranged on the guide rod, the insulating step is arranged on the upper surface of the slide block, one end of the conducting rod is arranged on the insulating step, the other end of the conducting rod is provided with a threaded hole, a fixing screw is arranged in the threaded hole of the conducting rod through threaded connection, the elastic piece is connected with the conducting rod through a fixing screw, the contact track is arranged on the upper surface of the main test board box body, the upper surface of the contact track is provided with bulges and grooves which are distributed at intervals, the elastic sheet is arranged on the contact track in a sliding mode, the plane of the power module loading platform is provided with an AC wiring end and a DC wiring end, two sets of side walls are symmetrically arranged on two sides of the power module loading platform, the upper ends of the side walls are hinged to form an explosion-proof plate, the width and the length of the explosion-proof plate are not smaller than those of the power module loading platform, the plane of the main testing platform box body is provided with an air switch, a motor switch, a switch power switch and a relay respectively, and an exhaust fan is arranged on the exhaust wall.

Further, the motor is a forward and reverse rotating motor.

Furthermore, a front limit switch is arranged on the front supporting plate, and a rear limit switch is arranged on the rear supporting plate.

Further, the contact rail is made of metal, and the distribution density of the protrusions and the grooves at the two ends of the contact rail is smaller than that of the protrusions and the grooves in the middle of the contact rail.

Further, the insulating step is an acrylic insulating step.

Furthermore, the explosion-proof plate is a transparent acrylic explosion-proof plate, so that the power condition can be observed conveniently and instantly.

Furthermore, a plurality of groups of LED lamps are arranged on the load loading platform, and outgoing lines are arranged on the LED lamps.

Further, exhaust fan, relay, motor switch, switching power supply switch, disturbance are all connected with the air switch electricity with timer and switch, the normally open contact of timer for the switch inserts the return circuit of relay, conducting rod, relay normally closed contact are connected with the switching power supply switch electricity, shell fragment and conducting rod electricity are connected, the AC wiring end is connected with relay normally closed contact, contact rail electricity, the DC wiring end is connected with the public wiring end electricity, the motor is connected with the motor switch electricity, the disturbance inserts the return circuit that motor and motor switch formed with the normally closed contact of timer, preceding limit switch, back limit switch insert the circuit that the disturbance used timer and motor to form simultaneously.

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: the utility model relates to a power module testboard has an unusual power module testboard of easy operation, optional switch mode, automatic continuation test, simulation AC end termination line.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of an overall structure of a power module test board according to the present invention;

fig. 2 is the utility model relates to a power module testboard's circuit connection schematic diagram.

The device comprises a power module loading platform, a load loading platform, a power exhaust wall, a switch timer, a disturbance timer, a main test platform box, a motor, a flexible coupling, a front support plate, a rear support plate, a screw rod, a guide rod, a slider, a 14, an insulating step, a conductive rod 15, a conductive rod 16, a fixing screw 17, a spring plate 18, a contact rail 19, an AC terminal 20, a DC terminal 21, a side wall 22, an explosion-proof plate 23, an air switch 24, a motor switch 25, a switch power switch 26, a relay 27, an exhaust fan 28, a front limit switch 29, an LED lamp 30, an LED lamp terminal 31, a common terminal 32 and a rear limit switch 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-2, the technical scheme adopted by the utility model is as follows: the utility model relates to a power module testboard, including main testboard assembly, power module load platform 1, load platform 2 and the wall 3 of airing exhaust, main testboard assembly front end is located to power module load platform 1, main testboard assembly right side is located to load platform 2, the wall 3 of airing exhaust is located main testboard assembly rear end, main testboard assembly front end is equipped with timer 4 and timer 5 for the disturbance for the switch, main testboard assembly includes main testboard box 6, motor 7, elastic coupling 8, preceding backup pad 9, back backup pad 10, screw rod 11, guide bar 12, slider 13, insulating step 14, conducting rod 15, fixed screw 16, shell fragment 17 and contact track 18, motor 7 locates main testboard box 6 upper surface, elastic coupling 8 locates on the output shaft of motor 7, preceding backup pad 9, The rear support plate 10 is arranged on the upper surface of the main test board box 6, the front support plate 9 and the rear support plate 10 are provided with circular openings, two ends of the screw rod 11 are respectively rotatably arranged on the front support plate 9 and the rear support plate 10, one end of the screw rod 11 is connected with an output shaft of the motor 7 through an elastic coupling 8, two ends of the guide rod 12 are respectively arranged on the front support plate 9 and the rear support plate 10, the guide rod 12 and the screw rod 11 are arranged in parallel, a threaded hole is arranged at the center of the slide block 13, the slide block 13 is connected on the screw rod 11 through threads, the slide block 13 is provided with a guide rod hole, the slide block 13 is slidably arranged on the guide rod 12, the insulating step 14 is arranged on the upper surface of the slide block 13, one end of the conductive rod 15 is arranged on the insulating step 14, the other end of the conductive rod 15 is provided with a threaded hole, and the fixing screw 16 is connected in the threaded hole of the conductive rod 15 through threads, the shell fragment 17 is connected with conducting rod 15 through set screw 16, the contact track 18 is located main test platform box 6 upper surface, contact track 18 upper surface is equipped with arch and recess, arch and recess interval distribution, shell fragment 17 slides and locates on the contact track 18, the plane is equipped with AC wiring end 19 and DC wiring end 20 on the power module load platform 1, 1 bilateral symmetry of power module load platform is equipped with two sets of lateral walls 21, and is a set of the articulated explosion-proof board 22 that is equipped with in lateral wall upper end, the width and the length of explosion-proof board 22 are all not less than the width and the length of power module load platform 1, main test platform box 6 upper surface is equipped with air switch 23, motor switch 24, switching power supply switch 25 and relay 26 respectively, be equipped with exhaust fan 27 on the exhaust wall 3.

Wherein the motor 7 is a positive and negative rotation motor.

The front support plate 9 is provided with a front limit switch 28, and the rear support plate 10 is provided with a rear limit switch 32.

The contact rail 18 is made of metal, the distribution density of the protrusions and the grooves at two ends of the contact rail 18 is smaller than that of the protrusions and the grooves in the middle of the contact rail 18, the larger the distribution density of the protrusions and the grooves of the contact rail 18 is, the larger the impact on the switching power supply is, the different distribution densities of the protrusions and the grooves of the contact rail 18 are used so as to enable the switching power supply to avoid continuous high-load impact, and meanwhile, the potential problem of the switching power supply under the condition of low-load impact can be found.

The insulating step 14 is an acrylic insulating step.

The explosion-proof plate 22 is a transparent acrylic explosion-proof plate, which is convenient for observing the power condition immediately.

The LED lamp loading platform is characterized in that a plurality of groups of LED lamps 29 are arranged on the load loading platform 2, LED lamp wiring ends 30 are arranged on the LED lamps 29, and a common wiring end 31 is arranged on the load loading platform 2.

Exhaust fan 27, relay 26, motor switch 24, switch power switch 25, for the disturbance timer 5 and switch timer 4 all are connected with air switch 23 electricity, the normally open contact of timer 4 for the switch inserts the return circuit of relay 26, conducting rod 15, relay 26 normally closed contact are connected with switch power switch 25 electricity, shell fragment 17 and conducting rod 15 electricity are connected, AC wiring end 19 is connected with relay 26 normally closed contact, contact rail 18 electricity simultaneously, DC wiring end 20 is connected with public wiring end 31 electricity, motor 7 is connected with motor switch 24 electricity, the disturbance inserts the return circuit that motor 7 and motor switch 24 formed with timer 5's normally closed contact, preceding limit switch 28, back limit switch 32 insert the circuit that the disturbance timer 5 and motor 7 formed simultaneously.

When the test device is used specifically, a power supply module to be tested is placed on the power supply module loading platform 1, a public wiring terminal 31 and a specific LED lamp wiring terminal are connected through a wire according to the power of the power supply module, the air switch 23 is connected to commercial power, the air switch 23 is closed, the exhaust fan 27 starts working, the delay on-off time and the delay off-time of the timer 4 for switching and the timer 5 for disturbance are respectively set, the test under the switch mode is started firstly, the switch power switch 25 is closed, the motor switch 24 is disconnected at the moment, the motor 7 does not work, the power supply module continues on-off experiments at the moment, the switch action during use is simulated, after the specific time is continued, the timer 4 for switching stops working, the motor switch 24 is closed, the abnormal state of an AC end wiring is simulated at the moment, the motor 7 starts working, the output shaft of the motor 7 drives the screw rod 11 to rotate, the slider 13 slides along the guide rod 12, the conducting rod 15 on the sliding block 13 slides along with the sliding block 13, the conducting rod 15 drives the elastic sheet 17 to slide together, the elastic sheet 17 slides on the contact track 18, when the elastic sheet 17 contacts with the protrusion of the contact track 18, the power supply module AC end starts to supply power, when the elastic sheet 17 enters the groove area of the contact track 18, the power supply module AC end stops supplying power, because the time interval between the contact and the separation of the elastic sheet 17 and the protrusion of the contact track 18 is short, in the process that the elastic sheet 17 slides on the contact track 18, electric arcs and a little smoke can be generated, the working state of the switching power supply is unstable at the moment, but the bearing capacity of the switching power supply in the limit state can be tested best, the exhaust fan 27 exhausts the smoke, the sliding length of the elastic sheet 17 along the contact track 18 is determined by the timing setting of the timer 5 for disturbance, and the limit switch 28 limits the sliding of the sliding block 13 in the allowable range.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a power module testboard which characterized in that: the power supply module loading platform is arranged at the front end of the main test platform assembly, the load loading platform is arranged on the right side of the main test platform assembly, the air exhaust wall is arranged at the rear end of the main test platform assembly, a timer for switching and a timer for disturbance are arranged at the front end of the main test platform assembly, the main test platform assembly comprises a main test platform box body, a motor, an elastic coupling, a front support plate, a rear support plate, a screw rod, a guide rod, a sliding block, an insulating step, a conductive rod, a fixing screw, a spring sheet and a contact track, the motor is arranged on the upper surface of the main test platform box body, the elastic coupling is arranged on an output shaft of the motor, the front support plate and the rear support plate are arranged on the upper surface of the main test platform box body, the front support plate and the rear support plate are provided with circular openings, and two ends of the screw rod are respectively rotatably arranged on the front support plate and the rear support plate, one end of the screw is connected with an output shaft of the motor through an elastic coupling, two ends of the guide rod are respectively arranged on the front support plate and the rear support plate, the guide rod and the screw are arranged in parallel, a threaded hole is formed in the center of the slide block, the slide block is connected with the screw through threads, a guide rod hole is formed in the slide block, the slide block is slidably arranged on the guide rod, the insulating step is arranged on the upper surface of the slide block, one end of the conductive rod is arranged on the insulating step, a threaded hole is formed in the other end of the conductive rod, a fixing screw is connected with the threaded hole of the conductive rod through threads, the elastic piece is connected with the conductive rod through a fixing screw, the contact track is arranged on the upper surface of the main test board box body, bulges and grooves are arranged on the upper surface of the contact track and are distributed at intervals, the elastic piece is slidably arranged on the contact track, and an AC wiring end and a DC wiring end are arranged on the upper plane of the power module loading platform, the power module loading platform bilateral symmetry is equipped with two sets of lateral walls, and is a set of the articulated explosion-proof board that is equipped with in lateral wall upper end, the width and the length of explosion-proof board are all not less than the width and the length of power module loading platform, state main testboard box upper flat and are equipped with air switch, motor switch, switch power switch and relay respectively, be equipped with the exhaust fan on the wall of airing exhaust.

2. The power module test stand of claim 1, wherein: the motor is a positive and negative rotation motor.

3. The power module test stand of claim 1, wherein: the front supporting plate is provided with a front limit switch, and the rear supporting plate is provided with a rear limit switch.

4. The power module test stand of claim 1, wherein: the contact track is made of metal, and the distribution density of the protrusions and the grooves at the two ends of the contact track is smaller than that of the protrusions and the grooves in the middle of the contact track.

5. The power module test stand of claim 1, wherein: the insulating step is an acrylic insulating step.

6. The power module test stand of claim 1, wherein: the explosion-proof plate is a transparent acrylic explosion-proof plate.

7. The power module test stand of claim 1, wherein: the load loading platform is provided with a plurality of groups of LED lamps, and the LED lamps are provided with outgoing lines.

8. A power module test stand according to claim 3, wherein: exhaust fan, relay, motor switch, switching power supply switch, for disturbance timer and switch timer all are connected with the air switch electricity, the normally open contact of timer for the switch inserts the return circuit of relay, conducting rod, relay normally closed contact are connected with the switching power supply switch electricity, shell fragment and conducting rod electricity are connected, the AC wiring end is connected with relay normally closed contact, contact rail electricity, the DC wiring end is connected with public wiring end electricity, the motor is connected with motor switch electricity, the disturbance inserts the return circuit that motor and motor switch formed with the normally closed contact of timer, preceding limit switch, back limit switch insert the circuit that the disturbance used timer and motor to form simultaneously.