391 results about "Test power" patented technology

The invention discloses a broadband oscillation characterization platform of a multi-chip power module and a near-field characteristic evaluation method, and belongs to the technical field of power electronics. The continuous operation condition of the power converter is decoupled into a series of discrete switching points, transient near-field radiation data of a to-be-tested power module under the discrete switching points are obtained through a double-pulse test, and near-magnetic field radiation signals are reconstructed; performing time-frequency analysis on the reconstructed near magnetic field radiation signal to generate a two-dimensional time-frequency matrix; and calculating a radiation energy entropy value based on the two-dimensional time-frequency matrix, fusing the radiation energy entropy value with the peak amplitude in the two-dimensional time-frequency matrix to generate a comprehensive EMI index for evaluating the broadband oscillation electromagnetic interference risk, and triggering EMI risk early warning when the comprehensive EMI index exceeds a threshold value. According to the method, the spectrum complexity is quantified through the radiation energy entropy, the multi-dimensional EMI risk assessment is carried out by fusing the peak amplitude of the time-frequency matrix, and the broadband oscillation in the multi-chip parallel power module can be accurately and efficiently represented.

The invention provides a power device failure positioning method and system based on multi-physics field coupling, and the method comprises the steps: applying dynamic electric stress to a tested power device, and synchronously collecting the thermal field data, electric field data and mechanical field data of the tested power device; wherein the thermal field data is used for representing the surface temperature distribution of the to-be-measured power device, the electric field data is used for representing the electrical parameters of the to-be-measured power device, and the mechanical field data is used for representing the internal morphology of the to-be-measured power device; synchronizing the thermal field data, the electric field data and the mechanical field data through timestamps, and aligning in a preset three-dimensional coordinate system to obtain multi-dimensional alignment data; and generating a failure probability distribution diagram according to the multi-dimensional alignment data so as to determine corresponding failure point coordinates. Through multi-physics field data coupling analysis, the problem of failure point fuzzy positioning in a complex packaging structure is solved, and the detection sensitivity under a dynamic working condition is improved.

The invention relates to a multi-path power supply parallel automatic test system and a test method. The multi-path power supply parallel automatic test system comprises a main control module, an instruction scheduling module, a test instrument group and a plurality of test fixtures, each test fixture is used as an independent test channel with self-defined configuration; a request signal input end of the main control module is connected with a request signal output end of the independent test channel, a test signal input end of the main control module is connected with a test signal output end of the test instrument group, and a control signal output end of the main control module is connected with a control signal input end of the instruction scheduling module; the signal output end of the instruction scheduling module is connected with the signal input end of the test instrument group, and the test instrument group is used for executing corresponding test operation on the to-be-tested power supply according to the control signal; the testing efficiency is remarkably improved, manual operation is reduced, and the basic capability of automatic parallel testing of multiple power supplies is achieved.

The invention discloses a load matching method of a tested power supply and related equipment. The method comprises the following steps: acquiring rated voltage, rated current and rated power of a tested power supply, drawing a power supply parameter curve based on the group of parameters, and determining a current turning point from the power supply parameter curve; according to the magnitude relationship between the actual output voltage of the tested power supply and the voltage corresponding to the current turning point, the rated current or rated power is flexibly selected as a reference basis to determine the resistance value of each load in the load box; and finally, selecting a plurality of loads connected in parallel from the load box as test loads according to the actual output voltage, and ensuring that the actual output current of the tested power supply reaches the rated current or the actual output power reaches the rated power. The rated current or the rated power is dynamically switched through the current turning point to serve as a reference basis, the load requirements of the tested power supply in different voltage intervals are accurately adapted, and the adaptability of load matching is greatly improved.

The invention discloses a withstand voltage test method and device for transformer production and a medium, and belongs to the technical field of transformer tests.The method specifically comprises the steps that firstly, a frequency conversion test power source is connected to the input end of a to-be-tested transformer and connected with a high-precision non-inductive shunt in series, and an environment monitoring unit is started to lock temperature and humidity in real time; the control power supply outputs a standard sine test voltage with a preset frequency; then, a high-frequency broadband acquisition card is used for synchronously obtaining instantaneous waveform data of voltage and total leakage current of the transformer, and analog signals are converted into discrete digital signals; performing second-order difference on the total leakage current signal to position a high-frequency abrupt change point, and reconstructing a smooth waveform through Lagrange interpolation; a current phase difference is calculated by taking a voltage zero crossing point as a phase reference, a complex plane coordinate system is constructed, and resistive and capacitive current components are calculated through waveform amplitude projection; and finally, according to the temperature and the humidity, a correction coefficient is called to normalize the resistive current, and a quality inspection result is output by comparing an insulation safety threshold.

The invention relates to a two-way current smooth switching system and method without crossover distortion and a double-quadrant power supply, and the system comprises a signal setting unit, a dynamic bias ClassAB push-pull output unit, a feedback sampling unit and a control processing unit. According to the dynamic bias ClassAB push-pull output unit, static micro-conduction bias is provided for N-type and P-type power tubes in a push-pull output subunit through an internal bias subunit, and closed-loop control is combined, so that continuous and smooth transition can be realized when system output current is switched at a zero crossing point in the positive and negative directions, and the system stability is improved. And the problems of crossover distortion and switching dead zone existing in the traditional bidirectional power supply are thoroughly eliminated. According to the invention, high-efficiency, high-speed and distortionless bidirectional current output is realized, the system structure is simplified, and the system can be widely applied to the fields of high-precision test power supplies, battery simulators, servo drivers and the like.

The invention provides a testing device of a power semiconductor device and a testing method based on the testing device, and relates to the field of semiconductors, and the testing device comprises a first probe loop which comprises a first probe which can be separated from or electrically contacted with a tested power semiconductor device; when the first probe is in electric contact with the tested power semiconductor device, the dynamic voltage change rate applying circuit applies dynamic voltage to the tested power semiconductor device through the first probe loop; the second probe loop comprises a second probe which is electrically contacted with the tested power semiconductor device; when the first probe is separated from the tested power semiconductor device, the parameter measuring circuit measures the electrical parameters of the tested power semiconductor device through the second probe loop; and the first stray inductance of the first probe loop is smaller than the second stray inductance of the second probe loop, so that the electrical parameters of the power semiconductor device can be accurately extracted under the condition that high dV / dt dynamic voltage is applied to the power semiconductor device.

The application discloses a local discharge signal processing method and device under high-frequency square wave voltage, wherein the method comprises the following steps: filtering low-frequency noise signals of a test power supply by using a high-pass filter with a preset cutoff frequency, wherein the test power supply is a high-frequency square wave power supply for local discharge test of an insulation sample; obtaining a local discharge starting voltage of the insulation sample, collecting a local discharge signal when a test voltage is the local discharge starting voltage, obtaining a characteristic frequency band of local discharge of the insulation sample according to the local discharge signal, and the test voltage is a high-frequency square wave voltage of the test power supply; performing modal decomposition on the local discharge signal of the characteristic frequency band to obtain a plurality of modal components, selecting a plurality of modal components satisfying a preset condition to perform noise reduction processing and signal reconstruction, and obtaining a denoised local discharge signal of the insulation sample under the high-frequency square wave voltage. The application can avoid interference of the high-frequency square wave power supply on the local discharge signal, and obtain a local discharge signal with high signal-to-noise ratio under the high-frequency square wave voltage.

The invention provides double-layer soft package battery normal temperature capacity grading power supply built-in all-in-one machine equipment, which comprises a rack assembly, a battery tray probe assembly and a power supply unit layer, and is characterized in that the battery tray probe assembly comprises a bottom plate, a fire-fighting spraying part, a fan heat dissipation part, a battery tray, a tray clamping and positioning toggle clamp and a probe clamp part; the device has the beneficial effects that the test fixture and the charge and discharge test power supply are integrated, the device integration degree is high, the occupied space is small, the device is divided into two layers to independently control the flexible test battery, the degree is high, the efficiency is high, the device appearance is attractive, operation and maintenance are simple, and particularly, exposed maintenance of a large number of channel lines is avoided; and the device can be widely applied to various large battery plant laboratories and scientific research institutions, and is suitable for being maturely popularized to the market in a large scale.

The application discloses a kind of ship generator set reactive power testing device, method and computer program product, wherein the device includes: at least two adjustable reactors and control unit;The control unit includes at least two switch units and busbar;The adjustable reactor is connected in parallel by one the switch unit and accesses the busbar;The control end of the control unit is connected to each the adjustable reactor;The control unit is used to control the on-off state of the switch unit, and the reactive power regulation of the adjustable reactor and the adjustable reactor in ship generator power test.The technical scheme provided by the embodiment of the application can avoid the problem of repeated wiring under different test power, adapt to the test requirements of multiple power changes, and improve the test efficiency.

The present application relates to a kind of switching loading system for rock test equipment, steel frame (11) and base (12) are connected to form loading frame, steel frame (11) is to U type structure, its two side wings and base (12) are connected, normal stroke piston (15) is from top to bottom through the top plate of steel frame (11), can be applied from the normal pressure of steel frame (11) upper direction to lower;Tangential fixed piston (16) is from left through the left side wing of steel frame (11), its position can be adjusted by hand wheel, for jacking test equipment;Tangential stroke piston (17) one end is from right through the right side wing of steel frame (11), the other end is driven by oil pressure pump to provide test power for test equipment;Loading platform (13) is placed on base (12), and cantilever crane (14) of free rotation is installed on the top of steel frame (11), and the lower end of cantilever crane (14) is higher than the topmost of normal stroke piston (15).

This application provides an automated testing method and integrated testing system for spaceborne SAR, comprising: a test host reading a test configuration file corresponding to the spaceborne SAR under test, generating a test command package based on the test configuration file and sending it to the spaceborne SAR under test; the spaceborne SAR under test powering on according to the test command package, generating a microwave signal corresponding to the test command package and transmitting it to the echo reflection simulation module, receiving the echo signal fed back from the echo reflection simulation module and feeding it back to the test host; and the test host analyzing the echo signal and generating a target test report. By pre-uploading the test configuration file corresponding to the spaceborne SAR to the test host, fully automated testing of different types of spaceborne SARs is achieved, improving testing efficiency, reducing testing costs, and improving the accuracy and reliability of test results.

The invention provides 4680 cylindrical battery normal temperature formation and capacity grading test power supply built-in all-in-one machine equipment, which comprises a rack assembly, a test clamp assembly and a power supply unit layer, and is characterized in that the rack assembly comprises a rack, a clamp mounting plate, an operation panel part, a wire slot cover plate and a wire slot; the equipment has the beneficial effects that the equipment is manufactured according to the hot 4680 cylindrical battery formation and capacity grading charge and discharge requirements in the new energy power battery industry, the test fixture and the charge and discharge test power supply are integrated, the equipment is high in integration level and small in occupied space, the equipment is divided into two layers, four independent control fixtures are arranged, the flexible battery test degree is high, the efficiency is high, and the cost is low. The device is beautiful in appearance and simple to operate and maintain, especially avoids the bare maintenance of a large number of channel lines, reduces the maintenance cost of manual training, is widely applied to various large battery plant laboratories and scientific research institutions, and is suitable for large-scale mature popularization in the market.

The invention belongs to the technical field of component measurement, and particularly relates to a device capable of switching components in a closed box body outside the box body to carry out an electrical test, which comprises a measurement button, a controller, a relay, a driving module of the relay and a component fixing clamp, the measuring button, the controller, the relay and the driving module of the relay are sequentially connected, and the controller receives a control instruction sent by the measuring button and drives the relay and the driving module of the relay to switch electrical connection of components in the closed box body according to the control instruction; the component fixing clamp is used for installing a component to be tested, and a port is reserved in the component fixing clamp and used for being connected with a test power source. According to the invention, components in the closed box body are switched to carry out an electrical test under the condition that the closed box body is not opened, and the change of a test environment caused by opening the closed box body to replace the components is avoided, so that the influence on an electrical test result of the components is avoided, and the time for readjusting the test environment to be stable is saved.

The utility model relates to the technical field of high-power power amplifier testing, in particular to a high-power power amplifier testing jig, which comprises a testing seat, a power amplifier positioning assembly arranged on the testing seat, a testing sliding seat slidably connected behind the power amplifier positioning assembly along the front-back direction, and a testing power mechanism used for driving the testing sliding seat to slide, the test sliding seat is sequentially provided with a power line module, a test probe module and an RCA plug module from left to right, the test power mechanism is arranged on the test seat, and the output end of the test power mechanism is in driving connection with the test sliding seat; according to the utility model, the power-on test of the high-power power amplifier can be carried out instead of the conventional manual wiring mode, the operation is simpler, the conditions of wrong test and re-test caused by wrong wire insertion can be avoided, the overall test efficiency can be improved, the wire does not need to be touched by hands, and the overall operation is safer.

The invention discloses a measuring instrument flexibility detection system and method, and belongs to the technical field of measuring instrument detection. The system comprises a detection unit main body frame; a measurement and control unit is arranged at the lower part of the detection unit main body frame; multiple layers of detection units are arranged at the upper part of the detection unit main body frame; each layer of detection unit comprises a conveying line module and a line connecting and disconnecting subunit; the conveying line module can convey different types of measuring instruments to the connecting and disconnecting line subunit; the measurement and control unit is electrically connected with the wire connecting and disconnecting subunit through a wire harness, and is used for providing a test power supply for the wire disconnecting subunit and calculating errors. According to the invention, through automatic adjustment of related parts, automatic detection of various measuring instruments can be compatible, the field utilization rate is high, synchronous detection of more detection meter positions can be realized, and the logistics conveying flexibility and the detection unit mobility are high.

The invention relates to a modulation method and system for improving test power supply efficiency of a current transformer, and the method comprises the specific steps: building a time domain model based on a primary side resonant capacitor uCr1, a primary side resonant inductive current iLr1 and an excitation inductive current im of an LLC resonant converter, deducing a time domain expression of a single-phase-shift mode of the LLC resonant converter through a time domain analysis method, and calculating the test power supply efficiency of the LLC resonant converter. Calculating a phase shift angle of the LLC resonant converter in a low-frequency light-load working mode by combining a modal time domain equation; when the LLC resonant converter works, the output load and the working frequency of the LLC resonant converter are detected, and the working state of the LLC resonant converter is judged; when the output load of the LLC resonant converter is lower than a light-load threshold value and the working frequency is lower than a low-frequency threshold value, the LLC resonant converter automatically enters a low-frequency light-load operation mode; and when the LLC resonant converter enters the low-frequency light-load operation mode, the size of the phase shift angle is adjusted according to the time domain model, so that the LLC resonant converter is separated from the low-frequency light-load operation mode.

The utility model discloses a power plug cord high-voltage tester which comprises a high-voltage testing mechanism and an auxiliary mechanism, the high-voltage testing mechanism is provided with a high-voltage output end and a grounding end, the auxiliary mechanism comprises a three-hole socket and a three-core cable, a live wire end and a zero wire end of the three-hole socket are in short circuit, one end of the three-core cable is connected with the three-hole socket, and the other end of the three-core cable is connected with the grounding end of the three-hole socket. The other end of the three-core cable is connected with the high-voltage output end and the grounding end, and a to-be-tested power plug cord is directly inserted into the three-hole socket for high-voltage testing. The beneficial effects of the utility model are that the to-be-tested power plug cord is directly inserted into the three-hole socket for high-voltage test, and manual operation of a tester is not needed after the test is started, so that the safety of the tester is ensured, and the test efficiency is improved.

The utility model belongs to the technical field of transformer performance detection, and particularly relates to a portable transformer loss test power box which is characterized by comprising a suitcase shell, a panel and a three-phase compensation power capacitor, the panel and the three-phase compensation power capacitor are both accommodated in the suitcase shell, and the panel is connected with the three-phase compensation power capacitor. An input ammeter, an input voltmeter, an output ammeter, an output voltmeter, an input side connector socket and an output side connector socket are arranged on the panel; three groups of three-phase compensation power capacitors are arranged, and three fling-cut switches are correspondingly arranged on a panel; the input side connector socket is connected with a voltage regulator through a cable, and the output side connector socket is connected with a to-be-tested transformer through a cable. The beneficial effects of the utility model are that the portable box-type structure is adopted, which is convenient to carry and is especially suitable for the on-site loss test of a large-scale transformer; the switching type three-phase compensation power capacitor can be suitable for various transformer models and is high in universality; the method is very suitable for transformer loss batch test operation.

The application provides a performance test method, system, device and medium of a parallel converter, the parallel converter comprising a plurality of first devices and a plurality of second devices; each device comprises at least two modules; the module types comprise first modules and second modules; the method comprises: controlling the first modules to operate in a voltage source mode and the second modules to operate in an alternating current source mode; sending a power reference value instruction to realize parallel power test of each module; controlling the first devices to operate in the voltage source mode and the second devices to operate in the alternating current source mode; sending the power reference value instruction to realize parallel power test of the devices, and obtaining a performance test result of the parallel converter. By controlling part of the modules or devices in the parallel converter to be in the voltage source mode and simultaneously controlling another part of the modules or devices to be in the alternating current source mode, the power demand for external test power supply can be reduced.

The invention discloses a voltage time type function test method and system suitable for power distribution terminals, and the method comprises the steps: building protocol connection between to-be-tested power distribution terminals and test software of a pre-built test system, building transmission channels between the test software and a plurality of to-be-tested power distribution terminals, and carrying out the initialization of the test software, the method comprises the following steps: acquiring an initial position of a to-be-tested power distribution terminal in normal operation, remote signaling information of a detection function, message receiving time and displacement information and displacement time after a fault is triggered according to a fault condition, and acquiring fault triggering time in a fault test process; and calculating reference deflection time and theoretical deflection time of the to-be-tested power distribution terminal by taking the trigger fault time as a reference, comparing the message receiving time or deflection time, the reference deflection time and the theoretical deflection time, judging whether the voltage time type function of the to-be-tested power distribution terminal is qualified or not, and obtaining a voltage time type function test conclusion. The method has the effect of improving the voltage time type function test comprehensiveness of the power distribution terminal.

This invention relates to the field of high-speed magnetic levitation transportation technology and discloses a test device for a ground module of a magnetic levitation electromagnetic propulsion system. The device includes a superconducting magnet, a ground test bench, a frequency converter, a through-core transformer, a high-voltage generator, connecting leads, dry-type terminals, and two power supply cables for the tested module. The tested ground module and the superconducting magnet are arranged opposite each other on the ground test bench. One end of the power supply cable for the tested module is equipped with a dry-type terminal, and the other end is connected to the lead-out end of the propulsion coil of the tested ground module. The dry-type terminal of one power supply cable passes through the through-core transformer and is connected to the dry-type terminal of the other power supply cable through a connector to form a conductive loop. The connection point of the dry-type terminal is connected to the high-voltage generator through connecting leads. The frequency converter is connected to one vertical side of the through-core transformer. The shielding shell of the tested ground module and the shielding layer of the tested power supply cables are grounded. This allows for multi-field coupling durability testing.

The utility model discloses a lithium battery power supply for detection, which relates to the field of lithium battery power supplies and comprises a lower shell, an upper shell and a battery, the battery is fixed between the lower shell and the upper shell, and the lower shell and the upper shell are spliced into a whole. The lower shell comprises a long-end bottom shell, a short-end bottom shell, four groups of first connecting bulges, first positioning bolts and second positioning bolts, the short-end bottom shell is fixedly connected to one side of the long-end bottom shell, the first connecting bulges are uniformly fixed at the front ends of the long-end bottom shell and the short-end bottom shell, and the first positioning bolts are fixedly connected to the top end of the long-end bottom shell; the utility model provides a lithium battery power supply for detection, which comprises a lower shell, an upper shell and a battery, the battery is fixed between the lower shell and the upper shell, the lower shell and the upper shell are spliced into a whole, and the power supply utilizes an upper group of lower shell and an upper group of upper shell which are staggered to protect the internal battery. And a plurality of groups of power supplies can be longitudinally spliced and mounted.

A stepless adjustable constant power load, comprising a power resistance adjustment device, a heat dissipation system, and a controller. The power resistance adjustment device comprises at least three fixed-value resistors having different resistance values, and a primary-circuit frequency converter; each fixed-value resistor is connected in series with a contactor to serve as a load module, and load modules are connected in parallel; an input end of the primary-circuit frequency converter is connected to a test power supply, the load modules are connected in parallel and then connected to an output end of the primary-circuit frequency converter, and the primary-circuit frequency converter serves as an adjustable-voltage power consumption unit. The controller selects a loading combination from the load modules on the basis of the magnitude of a target power, the loading combination is configured to enable combined power consumption to be less than the target power and a difference between the combined power consumption and the target power to be the minimum, and the controller outputs a PWM signal to adjust an output voltage of the primary-circuit frequency converter until power consumption of the primary-circuit frequency converter is equal to the difference.

The invention discloses a multi-standard power supply system and method for a locomotive test, and relates to the technical field of test power supplies, and the structural design of the system is as follows: an input power supply is a three-phase alternating current 10kV power supply; the high-voltage switch K realizes access control and isolation of the system and a public power grid, the connection reactor L realizes energy buffering and inhibits switch ripples in output current, and the soft charging circuit pre-charges the three-stage converter. The three-level converter converts three-phase alternating current 10kV into DC1500 / 750V and outputs the DC1500 / 750V to the direct-current bus, one path of the direct-current bus supplies power to a subway vehicle test line, and the other path of the direct-current bus is inverted into single-phase alternating current 25kV through the output inverter and supplies power to a railway locomotive test line. According to the invention, alternating current test conditions of railway electric traction locomotive vehicles and direct current test conditions of subway vehicles can be satisfied, reliability and quality of power supply are ensured, repeated construction is reduced, and resource waste is avoided.

The invention provides a method, equipment, medium and product for monitoring the state of a power device by using the nonlinear characteristic of a stress wave in a local frequency domain. The method comprises the following steps: acquiring a stress wave signal released by the tested power device at the current turn-off moment; preprocessing the stress wave signal, and extracting a stress wave signal component of a characteristic frequency band; performing frequency domain analysis on the stress wave signal component, and calculating characteristic parameters of a characteristic frequency band; and comparing the calculated characteristic parameters with the characteristic parameters of the tested power device in the initial state, and evaluating the health state of the tested power device at the current moment. According to the power device health state monitoring method, the health state of the power device is identified through the characteristic parameters of the local frequency band on the basis of the nonlinear phenomenon of the stress wave signal generated at the turn-off moment of the power device in the power circulation process in the frequency domain; the non-linear phenomenon on the frequency domain can better reflect the health state of the power device in the early stage and the whole life cycle, and the monitoring accuracy and sensitivity are higher.

The application provides a vehicle battery power mapping relationship correction method, device, equipment and medium. The method comprises the following steps: obtaining an initial power mapping table; adjusting the vehicle battery to a test state of charge and obtaining a test power corresponding to the test state of charge based on the initial power mapping table; discharging the vehicle battery based on the test power to obtain a test result; and correcting the initial power mapping table based on the test result to obtain a corrected battery power mapping relationship. The method tests the discharge state of the vehicle according to the discharge power of the battery monomer, and corrects the battery power mapping relationship based on the test result, so that the corrected battery power mapping relationship is more suitable for the use scenario of the vehicle, and the battery management system can accurately provide the required maximum power under different states of charge and environmental temperature conditions, thereby improving the stability during the use of the vehicle and the user experience.

The invention discloses a micro-grid energy storage multi-stage economic dispatching method, system and device based on differential evolution and a storage medium, solves the problem of how to improve micro-grid energy storage dispatching efficiency, and belongs to the field of power system operation and control. Comprising the following steps: generating a forced charging baseline instruction of which the system net power accords with a photovoltaic surplus period threshold; setting a power upper limit to initialize population individuals of a differential evolution (DE) algorithm, and generating a test vector; superposing the forced charging baseline instruction and the test vector to synthesize a preliminary attempt power, correcting a capacity boundary exceeding a capacity constraint, and outputting a first correction power; superposing the first corrected power and the system net power to synthesize a system net load, and outputting second corrected power when the corrected system net load is greater than a power boundary of a threshold value; constructing a high-fidelity objective function to execute DE optimization, and outputting an optimal individual to perform microgrid energy storage scheduling control; according to the method, the nonlinear battery life loss and the refined peak-valley arbitrage economy are taken into consideration under the condition that the physical operation safety of the bottom layer is guaranteed.

The utility model provides a power battery bottom impact system, which comprises an electric servo spring loading device, the electric servo spring loading device is used for providing vertically upward loading energy required by a test for a power battery, the electric servo spring loading device comprises an impact rod, and the top end of the impact rod is provided with an impact head; a to-be-tested power battery is placed on the battery testing frame, and the electric servo spring loading device is fixed below the to-be-tested power battery. The power battery bottom impact system has the beneficial effects that the electric servo spring loading device is fixed on the ground below the battery test frame for placing the power battery to be tested, and when the power battery needs to be tested, the electric servo spring loading device is fixed on the ground below the battery test frame for placing the power battery to be tested; and the impact head of the electric servo spring loading device is used for replacing manual work to carry out tests such as puncture on the power battery above, so that the personal safety of workers is ensured.

This utility model relates to an automated transport line and testing system for testing power semiconductor devices. The system comprises N testing devices, where N is greater than or equal to two, arranged side-by-side along a first straight line. The transport line includes: a tray, each capable of holding N devices simultaneously; a first conveying channel located in front of the inlet of the testing devices for transporting the trays; a gripper mechanism comprising N gripper units, each gripper unit gripping one device; and a transport device, with the N gripper units mounted on the moving end of the transport device. The transport device drives the gripper mechanism to move, adapting the gripper units to grip the N devices on the trays and sequentially transporting the N devices to each testing device. After testing, once the N gripper units have sequentially gripped the N devices, the transport device drives the gripper mechanism to move, transporting the devices to the next workstation, thereby saving space while improving testing efficiency.