DCDC Power Module Test System

Abstract

The present invention relates to a DCDC power module test system, which includes a positioning tooling for placing the DCDC power module, an auxiliary tooling arranged on one side of the positioning tooling, a loading and unloading manipulator arranged on the auxiliary tooling, a loading and unloading suction head arranged at the front end of the loading and unloading manipulator and used for replacing the DCDC power module to be tested, a bottom suction head arranged below the positioning tooling and used for adsorbing or taking out the DCDC power module, a detection device arranged on the auxiliary tooling, a front positioning manipulator arranged on the auxiliary tooling and located at the front end of the positioning tooling, a front measuring head arranged at the front end of the front positioning manipulator, and a measuring probe arranged at the front end of the front measuring head and used for electrical contact with the DCDC power module. The design of the present invention is reasonable, the structure is compact and it is convenient to use.

Description

Technical Field

[0001] The present invention relates to a DCDC power module test system. Background Art

[0002] Currently, for the systems and methods of testing the output voltage of DCDC modules using conventional special connectors, it is simply a connection test with low test accuracy. Because no matter how small the contact resistance of the connector is, voltage drop will occur under large current, which is an unacceptable error for high-precision tests. The significance of the method of the present invention is to divide the power and voltage signals into two paths. The power part still uses the traditional connector terminals, and an additional set of spring probes is used to specifically test the output pins of the module. Since the actual current generated by the multimeter for voltage measurement is extremely small, and the contact resistance of the spring probes is also extremely small, the voltage drop generated can be ignored, effectively improving the test accuracy. In the traditional method, since the alligator clip and the converter pin are in point contact, it is extremely easy to cause damage to the converter or "soft breakdown" of the internal circuit due to poor contact of the clip, greatly increasing the probability of human error and product scrapping, thus sharply increasing the production cost. Although CN201520454637.8, a special test bench for full-type series DC-DC converters, provides a set of solutions, its detection accuracy is still not high enough and it is still not suitable for high-precision fields such as aerospace remote control, inertial navigation systems, and deep-sea exploration.

[0003] In addition, the existing test technologies rely heavily on manual labor, with high cost expenditures, are prone to mismeasurement and cause product damage, and are also somewhat dangerous to the operators. When testing with electrodes held by humans, not only is it easy to be electrocuted by high voltage, but it is even easier to cause internal breakdown of the module due to accidental touch. While using automated testing, one only needs to place the module on a specific fixture and then connect it to the test instrument. The tester automatically switches the test points, and the efficiency is also improved. Summary of the Invention

[0004] Generally speaking, the technical problem to be solved by the present invention is to provide a DCDC power module test system and method. No matter how small the contact resistance of the traditional connector is, voltage drop will occur under large current, which is an unacceptable error for high-precision military tests. The significance of the test of the present invention is to divide the power and voltage signals into two paths. The power part still uses the traditional connector terminals, and an additional set of spring probes is used to specifically test the output pins of the module. Since the actual current generated by the multimeter for voltage measurement is extremely small, and the contact resistance of the spring probes is also extremely small, the voltage drop generated can be ignored, effectively improving the test accuracy. Due to the adoption of an ergonomic action structure, the clamping efficiency is also improved. The present invention adopts an action mode similar to pulling a trigger, which can effectively improve the test efficiency of the module.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A DCDC power module testing system includes a positioning tooling for placing the DCDC power module, an auxiliary tooling arranged on one side of the positioning tooling, a loading and unloading manipulator arranged on the auxiliary tooling, a loading and unloading suction head arranged at the front end of the loading and unloading manipulator and used for replacing the DCDC power module to be tested, a bottom suction head arranged below the positioning tooling and used for adsorbing or taking out the DCDC power module, a detection device arranged on the auxiliary tooling, a front positioning manipulator arranged on the auxiliary tooling and located at the front end of the positioning tooling, a front measuring head arranged at the front end of the front positioning manipulator, and a measuring probe arranged at the front end of the front measuring head and used for electrically contacting the DCDC power module.

[0007] As a further improvement of the above technical solution:

[0008] The positioning tooling includes a fixedly arranged gun handle frame, a gun handle front support and a gun handle rear seat respectively arranged on the gun handle frame, a gun handle body frame arranged on the gun handle frame and the gun handle rear seat, a horizontal channel arranged between the gun handle body frame and the gun handle front support, a gun trigger movably arranged in the horizontal channel, a bolt positioning pedestal arranged at the front end of the gun handle body frame and used for placing the DCDC power module, a process vertical through hole arranged on the bolt positioning pedestal and below the DCDC power module, a gun wrench arranged at the rear side of the lower end of the gun trigger and used for manual or mechanical control, a force regulator arranged at the lower end of the bolt positioning pedestal and directly in front of the gun trigger, adjustment positioning slot holes distributed on the force regulator, a gun return spring with one end located in the adjustment positioning slot hole and the other end connected to the front end of the gun trigger, a guiding positioning slot arranged on the gun handle body frame and in which the upper part behind the gun trigger longitudinally slides, a bolt body arranged above the gun handle body frame and connected to the top of the gun trigger, two symmetrically arranged link arms with the roots distributed and hinged on both sides of the rear part of the gun handle body frame, a link long slot inclinedly arranged on the link arm, a driving cross shaft arranged on the bolt body and with the corresponding end located in the link long slot, a bolt guiding rear cover arranged at the rear part of the gun handle body frame and in which the bolt body slides in its lower through slot, mounting process slots arranged side by side at the front end of the bolt body and used for placing spring probes, an upper movable cover which is L-shaped and with the lower end hinged on the horizontal bent arm of the link arm, front process grooves vertically distributed on the front end face of the vertical plate of the upper movable cover, a pushing ejector rod arranged on the lower end face of the upper movable cover and corresponding to the corresponding mounting process slot and used for pushing the spring probe forward, a guiding arc angle arranged at the cantilever head of the pushing ejector rod and used for guiding into the mounting process slot, and a pulling spring arranged between the pushing ejector rod and the upper movable cover.

[0009] On the bolt positioning pedestal, there is a workpiece positioning process concave platform for placing the DCDC power module. Longitudinally in front of the workpiece positioning process concave platform, there is a longitudinal front groove for placing the front probe of the detection device, and below the longitudinal front groove, there is a pick-up process groove for taking out the front probe.

[0010] The detection device includes a probe respectively used for measuring the electrical insulation of the DCDC power module, and an insulation test circuit; the insulation test circuit includes a triode Q1, a zener diode D1, a single-chip microcomputer, several triodes Q2, and several relays;

[0011] The external detection circuit detects that the high-voltage input is grounded through the zener diode D1, and through the base of the triode Q1. The emitter of the triode Q1 is grounded, and the collector of the triode Q1 is connected to the pin 1 of the single-chip microcomputer; the pin 40 of the single-chip microcomputer is connected to the power supply, and the pin 20 of the single-chip microcomputer is grounded; the output pin of the single-chip microcomputer is connected to the base of the triode Q2. The emitter of the triode Q2 is grounded, and the collector of the triode Q2 is connected to the relay control coil and electrically connected to the power supply. The normally open contact of the relay is connected to the test circuit for testing the high voltage and several test points;

[0012] The single-chip microcomputer turns on and off several triodes Q2 to realize the test switching of the corresponding test points.

[0013] The test circuit is electrically connected to the measurement points of the DCDC power module through the corresponding probes.

[0014] The detection device includes a front probe respectively used for detecting the power of the DCDC power module and electrically connected to the detection connector terminal, and a spring probe used for detecting the voltage signal of the DCDC power module; the spring probe is electrically connected to the multimeter through a wire. This device is mainly used for testing the output voltage of the DCDC module power supply. Compared with the previous special connectors, the method of the present invention has significantly improved accuracy. Because no matter how small the contact resistance of the connector is, there will be a voltage drop phenomenon under large current, which is an unacceptable error for high-precision testing. The significance of the method of the present invention is to divide the power and voltage signals into two paths. The power part still uses the traditional connector terminals, and an additional group of spring probes is used to specifically test the output pins of the module. Since the actual current generated by the multimeter for testing voltage is extremely small, and the contact resistance of the spring probe is also extremely small, the voltage drop generated can be ignored, effectively improving the test accuracy. The present invention has high test accuracy, more reasonable ergonomic design, and high test efficiency.

[0015] The core of the test device of the present invention is a 51 single-chip microcomputer. The external detection circuit detects the input of high voltage (higher than the safe voltage, such as 500V). Once the voltage input is detected, the relay starts to work automatically until the test is completed.

[0016] With automated testing, all that needs to be done is to place the module on a specific fixture and then connect it to the test instrument. The test instrument automatically switches the test points, and the efficiency is also improved. This device is mainly used for automatically testing the electrical insulation performance of power modules. Compared with the previous manual testing, the safety performance of automated testing is significantly improved: when testing with an electrode held by a person, not only is it easy to be electrocuted by high voltage, but it is also easier to cause internal breakdown of the module due to accidental touch. With automated testing, all that needs to be done is to place the module on a specific fixture and then connect it to the test instrument. The test instrument automatically switches the test points, and the efficiency is also improved.

[0017] The design of the present invention is reasonable, with low cost, durable, safe and reliable, simple to operate, time-saving and labor-saving, cost-saving, compact in structure and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention.

[0019] Figure 2 is the structural schematic diagram of the first perspective of the present invention.

[0020] Figure 3 is the structural schematic diagram of the second perspective of the present invention.

[0021] Figure 4 is the exploded structural schematic diagram of the present invention.

[0022] Figure 5 is the control structural schematic diagram of the present invention.

[0023] Wherein: 1. Auxiliary fixture; 2. Positioning fixture; 3. Loading and unloading manipulator; 4. Loading and unloading suction head; 5. Bottom suction head; 6. Detection device; 7. Front positioning manipulator; 8. Front measuring head; 9. Measuring probe; 10. Gun handle frame; 11. Gun handle rear seat; 12. Gun handle sub-frame; 13. Bolt positioning pedestal; 14. Process vertical through hole; 15. Gun trigger; 16. Gun wrench; 17. Force regulator; 18. Adjusting positioning slot; 19. Gun return spring; 20. Guide positioning slot; 21. Link arm; 22. Link long slot; 23. Bolt guide rear cover; 24. Bolt body; 25. Installation process slot; 26. Upper movable cover plate; 27. Front process groove; 28. Push ejector rod; 29. Guide arc angle; 30. Pulling spring; 31. Workpiece positioning process concave table; 32. Longitudinal front groove; 33. Front probe; 34. Pick-up process slot. DETAILED DESCRIPTION OF THE INVENTION

[0024] As Figures 1-4As shown in the figure, the DCDC power module test system of this embodiment includes a positioning tooling 2 for placing the DCDC power module, an auxiliary tooling 1 arranged on one side of the positioning tooling 2, a loading and unloading manipulator 3 arranged on the auxiliary tooling 1, a loading and unloading suction head 4 arranged at the front end of the loading and unloading manipulator 3 and used for replacing the DCDC power module to be tested, a bottom suction head 5 arranged below the positioning tooling 2 and used for adsorbing or taking out the DCDC power module, a detection device 6 arranged on the auxiliary tooling 1, a front positioning manipulator 7 arranged on the auxiliary tooling 1 and located at the front end of the positioning tooling 2, a front measuring head 8 arranged at the front end of the front positioning manipulator 7, and a measuring probe 9 arranged at the front end of the front measuring head 8 and used for electrical contact with the DCDC power module.

[0025] The positioning tooling 2 includes a fixedly arranged pistol grip frame 10, a pistol grip front support and a pistol grip rear seat 11 respectively arranged on the pistol grip frame 10, a pistol grip body frame 12 arranged on the pistol grip frame 10 and the pistol grip rear seat 11, a horizontal channel arranged between the pistol grip body frame 12 and the pistol grip front support, a pistol trigger 15 movably arranged in the horizontal channel, a bolt positioning pedestal 13 arranged at the front end of the pistol grip body frame 12 and used for placing the DCDC power module, a process vertical through hole 14 arranged on the bolt positioning pedestal 13 and located below the DCDC power module, a pistol wrench 16 arranged at the rear side of the lower end of the pistol trigger 15 and used for manual or motorized control, a force regulator 17 arranged at the lower end of the bolt positioning pedestal 13 and directly in front of the pistol trigger 15, adjustment positioning slot holes 18 distributed on the force regulator 17, a gun return spring 19 with one end located in the adjustment positioning slot hole 18 and the other end connected to the front end of the pistol trigger 15, a guiding positioning slot 20 arranged on the pistol grip body frame 12 and in which the upper rear part of the pistol trigger 15 longitudinally slides, a bolt body 24 located above the pistol grip body frame 12 and connected to the top of the pistol trigger 15, two symmetrically arranged link arms 21 with roots distributed and hinged on both sides of the rear part of the pistol grip body frame 12, a link long slot 22 obliquely arranged on the link arm 21, a driving cross shaft arranged on the bolt body 24 and with corresponding ends located in the link long slot 22, a bolt guiding rear cover 23 arranged at the rear part of the pistol grip body frame 12 and in which the bolt body 24 slides in its lower through slot, mounting process grooves 25 arranged side by side at the front end of the bolt body 24 and used for placing spring probes, an upper movable cover plate 26 with a lower end hinged on the horizontal bent arm of the link arm 21 and in an L shape, a front process groove 27 vertically distributed on the front end face of the vertical plate of the upper movable cover plate 26, a pushing ejector rod 28 arranged on the lower end face of the upper movable cover plate 26 and corresponding to the corresponding mounting process groove 25 and used for pushing the spring probe forward, a guiding arc angle 29 arranged at the cantilever head of the pushing ejector rod 28 and used for guiding into the mounting process groove 25, and a pulling spring 30 arranged between the pushing ejector rod 28 and the upper movable cover plate 26.

[0026] On the bolt positioning pedestal 13, there is a workpiece positioning process concave platform 31 for placing the DCDC power module. Longitudinally arranged at the front end of the workpiece positioning process concave platform 31 is a longitudinal front groove 32 for placing the front probe 33 of the detection device 6. Below the longitudinal front groove 32, there is a workpiece taking process groove 34 for taking out the front probe 33.

[0027] The detection device 6 includes a probe respectively used for measuring the electrical insulation of the DCDC power module and an insulation test circuit; the insulation test circuit includes a triode Q1, a zener diode D1, a single-chip microcomputer, several triodes Q2, and several relays;

[0028] As a specific way, such as Figure 5 The external detection circuit detects that the high-voltage input is grounded through the zener diode D1, and through the base of the triode Q1. The emitter of the triode Q1 is grounded, and the collector of the triode Q1 is connected to the pin 1 of the single-chip microcomputer; the pin 40 of the single-chip microcomputer is connected to the power supply, and the pin 20 of the single-chip microcomputer is grounded; the output pin of the single-chip microcomputer is connected to the base of the triode Q2. The emitter of the triode Q2 is grounded, and the collector of the triode Q2 is connected to the relay control coil and electrically connected to the power supply. The normally open contact of the relay is connected to the test circuit of the high voltage and several test points for testing;

[0029] The single-chip microcomputer turns on and off several triodes Q2 to realize the test switching of the corresponding test points.

[0030] The test circuit is electrically connected to the measurement points of the DCDC power module through the corresponding probes.

[0031] The detection device 6 includes a front probe 33 respectively used for detecting the power of the DCDC power module and electrically connected to the detection connector terminal, and a spring probe used for detecting the voltage signal of the DCDC power module; the spring probe is electrically connected to the multimeter through a wire.

[0032] The method for testing the performance parameters of the DC power supply in this embodiment includes the following steps. First, load the material through the manipulator; then, position and clamp through the tooling; secondly, measure the insulation parameters, power parameters, and voltage signals of the DC power supply respectively through the probes; thirdly, after the measurement is completed, take out the DC power supply through the manipulator.

[0033] For the loading step, the loading and unloading manipulator 3 controls the loading and unloading suction head 4 to adsorb / claw-hold the DC power supply onto the workpiece positioning process concave platform 31;

[0034] For the positioning and clamping steps of the tooling, first, pull the gun wrench 16, and the gun trigger 15 slides longitudinally in the horizontal channel and the guiding positioning groove 20 against the pulling force of the gun return spring 19. At the same time, the bolt body 24 is pulled back along the bolt guiding rear cover 23. Then, the bolt body 24 is pulled to move along the connecting rod long groove 22 through the driving cross shaft, so as to realize the backward swing of the upper movable cover plate 26. Secondly, place the spring probe into the installation process groove 25. Thirdly, release the gun wrench 16. Under the action of the restoring force of the gun return spring 19 and the gravity of the upper movable cover plate 26, the upper movable cover plate 26 swings forward, and the guiding arc angle 29 enters the rear part of the installation process groove 25, so that the pushing ejector rod 28 pushes the spring probe forward. Immediately afterwards, the front process groove 27 pushes the DC power supply forward and positions it. Then, by using the distance difference from the front process groove 27, the spring probe contacts the test point of the DC power supply. After that, the front positioning manipulator 7 drives the measuring probe 9 to contact the test point of the DC power supply through the front measuring head 8.

[0035] For the steps of respectively measuring the insulation parameters of the DC power supply through the probes, first, start the single-chip microcomputer. Then, when the single-chip microcomputer detects an external high-voltage input, according to the preset programming sequence, control the on-off of the relay to realize the test of each insulation test point by the probe of the detection device 6.

[0036] For the steps of respectively measuring the power parameters and voltage signals of the DC power supply through the probes, the spring probe measures the voltage signal through the multimeter, and the connector terminal measures the power parameters through the front probe 33.

[0037] The auxiliary tooling 1 realizes the installation of the measuring device, the positioning tooling 2 realizes the positioning of the DCDC DC power module, the loading and unloading manipulator 3 realizes automatic loading and unloading, the loading and unloading suction head 4 realizes adsorption and positioning during detection, and reverse blowing when picking up materials. The bottom suction head 5 or the manipulator realizes the lossless transportation of the power supply. The detection device 6 is a common detection device. The front positioning manipulator 7, the front measuring head 8, and the measuring probe 9 realize the measurement of the general power. The gun handle frame 10, the gun handle rear seat 11, and the gun handle sub-frame 12 realize support. The gun bolt positioning pedestal 13 and the process vertical through hole 14 facilitate the lifting of the lower suction nozzle. The gun trigger 15 realizes the guiding linkage drive. The gun wrench 16 realizes the drive input. The force regulator 17 adjusts the speed according to the workpiece conditions. The adjustment positioning slot 1 realizes the length adjustment of the gun return spring 19 to realize the force adjustment. The guiding positioning slot 20 realizes the guiding. The connecting rod arm 21 and the connecting rod long slot 22 realize the linkage. The gun bolt guiding rear cover 23 realizes the guiding. The gun bolt body 24 realizes the linkage. The installation process slot 25 realizes the guiding drive. The upper movable cover plate 26 realizes the downward pressure to guide the spring probe, and at the same time realizes the swinging through swinging. At the same time, it realizes the downward swing by using its own weight and the spring force. The front process groove 27 realizes the side push positioning of the power supply. A buffer pad can be added to reduce the impact loss of the power supply. The pushing ejector rod 28 realizes the subsequent pushing of the probe. The guiding arc angle 29 facilitates the pushing ejector rod to enter the slot. The pulling spring 30 controls the ejector rod to avoid the downward swing due to gravity. The workpiece positioning process concave table 31 facilitates positioning. The longitudinal front groove 32 facilitates the guiding of the front probe 33. The picking process slot 34 facilitates the manual or mechanical picking of the workpiece.

[0038] The present invention is fully described for a clearer disclosure, and the prior arts are not listed one by one.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; as is obvious to those skilled in the art, combinations of multiple technical solutions of the present invention are possible. And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A DCDC power module test system, characterized in that: It includes a positioning tooling (2) for placing the DCDC power module, an auxiliary tooling (1) arranged on one side of the positioning tooling (2), a loading and unloading manipulator (3) arranged on the auxiliary tooling (1), a loading and unloading suction head (4) arranged at the front end of the loading and unloading manipulator (3) and used for replacing the DCDC power module to be tested, a bottom suction head (5) arranged below the positioning tooling (2) and used for adsorbing or taking out the DCDC power module, a detection device (6) arranged on the auxiliary tooling (1), a front positioning manipulator (7) arranged on the auxiliary tooling (1) and located at the front end of the positioning tooling (2), a front measuring head (8) arranged at the front end of the front positioning manipulator (7), and a measuring probe (9) arranged at the front end of the front measuring head (8) and used for electrically contacting the DCDC power module; The positioning tooling (2) includes a fixedly arranged pistol grip frame (10), a pistol grip front support and a pistol grip rear seat (11) respectively arranged on the pistol grip frame (10), a pistol grip body frame (12) arranged on the pistol grip frame (10) and the pistol grip rear seat (11), a horizontal channel arranged between the pistol grip body frame (12) and the pistol grip front support, a pistol trigger (15) movably arranged in the horizontal channel, a bolt positioning pedestal (13) arranged at the front end of the pistol grip body frame (12) for placing the DCDC power module, a process vertical through hole (14) arranged on the bolt positioning pedestal (13) and below the DCDC power module, a pistol wrench (16) arranged at the rear side of the lower end of the pistol trigger (15) for manual or mechanical control, a force regulator (17) arranged at the lower end of the bolt positioning pedestal (13) and directly in front of the pistol trigger (15), adjustment positioning slot holes (18) distributed on the force regulator (17), a pistol return spring (19) with one end located in the adjustment positioning slot hole (18) and the other end connected to the front end of the pistol trigger (15), a guiding positioning slot (20) arranged on the pistol grip body frame (12) in which the upper rear part of the pistol trigger (15) longitudinally slides, a bolt body (24) located above the pistol grip body frame (12) and connected to the top of the pistol trigger (15), two symmetric connecting rod arms (21) with roots distributed and hinged on both sides of the rear part of the pistol grip body frame (12), a connecting rod long slot (22) obliquely arranged on the connecting rod arm (21), a driving cross shaft arranged on the bolt body (24) with corresponding ends located in the connecting rod long slot (22), a bolt guiding rear cover (23) arranged at the rear part of the pistol grip body frame (12) in which the bolt body (24) slides in its lower through slot, mounting process grooves (25) arranged side by side at the front end of the bolt body (24) for placing spring probes, an upper movable cover plate (26) with the lower end hinged on the horizontal bent arm of the connecting rod arm (21) and in an L shape, a front process groove (27) vertically distributed on the front end face of the vertical plate of the upper movable cover plate (26), a pushing ejector rod (28) arranged on the lower end face of the upper movable cover plate (26) corresponding to the corresponding mounting process groove (25) and used for pushing the spring probe forward, a guiding arc angle (29) arranged at the cantilever head of the pushing ejector rod (28) for guiding into the mounting process groove (25), and a pulling spring (30) arranged between the pushing ejector rod (28) and the upper movable cover plate (26); A workpiece positioning process concave platform (31) for placing the DCDC power module is arranged on the bolt positioning pedestal (13), a longitudinal front groove (32) for placing the front probe (33) of the detection device (6) is longitudinally arranged at the front end of the workpiece positioning process concave platform (31), and a workpiece taking process groove (34) for taking out the front probe (33) is arranged below the longitudinal front groove (32); The detection device (6) includes a front probe (33) for detecting the power of the DCDC power module and electrically connected to the detection connector terminal, and a spring probe for detecting the voltage signal of the DCDC power module; the spring probe is electrically connected to a multimeter through a wire.

2. The DCDC power module test system according to claim 1, wherein : The detection device (6) includes a probe for measuring the electrical insulation of the DCDC power module respectively, and an insulation test circuit; the insulation test circuit includes a triode Q1, a zener diode D1, a single-chip microcomputer, a number of triodes Q2, and a number of relays; The external detection circuit detects that the high-voltage input is grounded through the zener diode D1, and through the base of the triode Q1. The emitter of the triode Q1 is grounded, and the collector of the triode Q1 is connected to the pin 1 of the single-chip microcomputer; the pin 40 of the single-chip microcomputer is connected to the power supply, and the pin 20 of the single-chip microcomputer is grounded; the output pin of the single-chip microcomputer is connected to the base of the triode Q2. The emitter of the triode Q2 is grounded, and the collector of the triode Q2 is connected to the relay control coil and electrically connected to the power supply. The normally open contact of the relay is connected to the test circuit for testing the high voltage and a number of test points; The single-chip microcomputer turns on and off a number of triodes Q2 to realize the test switching of the corresponding test points.

3. The DCDC power module test system according to claim 2, wherein : The test circuit is electrically connected to the measurement points of the DCDC power module through the corresponding probes.

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