381 results about "Power test" patented technology

The invention discloses a method and a device for detecting networking and grid-connected capabilities of a networking type energy storage system, and belongs to the field of power system detection. The method comprises the following steps: disconnecting the energy storage system from an external power grid, testing whether the energy storage system is independently started or not, and establishing a stable voltage; a dynamic power compensation algorithm is adopted to ensure that the voltage and the frequency are kept stable under load fluctuation, and a time domain response analysis method is adopted to ensure that the recovery time is less than or equal to 200ms; the grid-connected power is gradually increased or reduced, and the adjustment and response capability of the system within the rated power range of 0-100% is tested; applying voltage disturbances with different amplitudes, observing the dynamic response of the tested energy storage system, and testing whether the system can operate stably and keep active power output; a main power grid is simulated to be disconnected, whether an energy storage system recognizes and enters an island mode is detected, and the island detection speed is increased by using an improved positive and negative sequence impedance measurement method. A positive and negative sequence impedance measurement algorithm is adopted, the disconnection state of the main power grid is detected more quickly, island detection time is remarkably shortened, and fluctuation of voltage and frequency is reduced.

The invention discloses a method for evaluating the quality of a photovoltaic module. The evaluation method comprises the following steps: before a sequence aging test, heating a to-be-tested photovoltaic module, and performing a power test on the to-be-tested photovoltaic module to obtain a first power test result; after the sequence aging test, performing EL test and power test on the to-be-tested photovoltaic module under a T98% temperature condition to obtain a first EL test result and a second power test result; the defect percentage is calculated according to a second EL test result and the first EL test result of the photovoltaic module to be tested under the STC, and the second EL test result is obtained before the sequence aging test; calculating the power attenuation of the to-be-tested photovoltaic module under the T98% temperature condition by using the first power test result and the second power test result; and evaluating the quality of the photovoltaic module to be tested by using the defect percentage and the power attenuation. The evaluation method can effectively improve the accuracy and integrity of quality evaluation of the photovoltaic module.

The invention discloses an electric inertia simulation braking power test bench and an electric inertia control method thereof, and relates to the technical field of electric transmission simulation of flywheels, the electric inertia simulation braking power test bench comprises a motor, an incremental encoder, a main shaft, a flywheel, a force arm frame, a mechanical friction braking torque sensor, an electric transmission control system and a brake disc; an incremental encoder is installed at the rear end of the motor, the transmission end of the motor is connected with the main shaft through a coupler, the flywheel is installed on the main shaft, a brake disc is installed on the force arm frame, and meanwhile the force arm frame is connected with a mechanical friction braking torque sensor. According to the invention, the angular speed, the angular displacement and the mechanical friction braking torque are synchronously collected, and the motor torque is calculated and given, so that the test bench operates in a state of approaching an equivalent flywheel and equivalently having no system resistance; the algorithm can control the total error within a very small range; accurate matching of rotational inertia is achieved, and the control precision can meet the high-precision test requirement. And investment and operation cost are saved.

The invention relates to an automatic power test method and device for a photovoltaic module, and relates to the field of photovoltaic test technology, and the method comprises the steps: controlling a mechanical arm to clamp the photovoltaic module in response to an optical signal; controlling the mechanical arm to move according to the moving track and placing the photovoltaic module; adjusting the light source to preset target brightness; collecting electrical performance parameters when the light source is adjusted to the target brightness; and performing power prediction and anomaly scoring on the electrical performance parameters. According to the invention, a photovoltaic module is clamped and placed through a mechanical arm by using light spots, a shading unit in the mechanical shading array module is controlled to perform shading according to a target shading mode instruction, the problems that manual adjustment is difficult to respond to test requirements of different modules and the photovoltaic module test efficiency is low are solved, automatic operation of photovoltaic module power test is realized, and the test efficiency is improved. And the testing efficiency and the testing precision of the photovoltaic module are improved.

The invention relates to the technical field of database structures, in particular to an electric power test database management analysis method and system.The electric power test database management analysis method comprises the following steps that all test data are collected and arranged in an electric power test database, and data access frequency and response time records are generated by calculating the query frequency and response time of all data columns; and based on the data access frequency and the response time record, evaluating a data access mode, and generating an index performance monitoring result. According to the method, accurate perception of the data access performance is realized through acquisition and analysis of the data column query frequency and the response time, a mode stability value is introduced into evaluation of the index performance, a multi-dimensional evaluation system of the data access performance is established, and index structure optimization is promoted to be more targeted. In the index structure reconstruction process, the CPU utilization rate, the memory occupancy rate and the I / O throughput are monitored and recorded in real time, and the resource use condition and the adjustment effect feedback condition in the index adjustment process are controlled.

The invention discloses a testing device for LCD (liquid crystal display) production, and particularly relates to the technical field of LCD production, the testing device comprises a power tester, a voltage regulating mechanism and a testing mechanism, and a supporting mechanism, a rotating mechanism and a controller are arranged above the testing mechanism. Through the synergistic effect of the testing mechanism, the conveying mechanism, the supporting mechanism, the rotating mechanism and the adsorption mechanism, automatic testing and sorting are achieved; according to the device, a sensor is adopted to trigger an automatic testing process, a rotating mechanism and an adsorption mechanism which are driven by an electric oil cylinder are combined, automatic adsorption, multi-section type rotation (90 degrees anticlockwise / 3 degrees clockwise / 6 degrees anticlockwise / vertical downward movement) and accurate positioning of the display screen are completed, traditional manual operation is replaced, and the testing efficiency is remarkably improved; according to the switching assembly, through the linkage design of a magnetic block and a metal limiting block, automatic distribution of qualified products and unqualified products is achieved in cooperation with a discharging pressing rod and a waste pressing rod, secondary sorting is avoided, and the production safety is improved.

The invention discloses a high-power thin film thermopile laser power meter and a preparation method thereof, and relates to the technical field of laser detection equipment. The high-power thin-film thermopile laser power meter comprises a thermopile chip and a heat sink packaging shell, the thermopile chip comprises a substrate, a thermopile layer is arranged on the substrate, the thermopile layer comprises a plurality of thermocouple lines, the adjacent thermocouple lines are connected in series, the thermocouple lines are distributed in a square shape, the thermocouple lines are distributed in a step shape, and the thermopile chip is connected with the heat sink packaging shell. And a cold end thermal resistance layer and a hot end thermal resistance layer are respectively arranged above the cold end and below the hot end of the thermopile layer. The structure of the thermopile is optimized, the heat transfer path in the thermopile chip is regulated and controlled, the stability of the thermopile chip in a low laser power test is improved, the preparation process is improved, and the cost is reduced. The problems that an existing thin film thermopile laser power meter is low in sensitivity and poor in stability during low-power measurement, and a thermopile chip is prone to aging and poor in stability during high-power density measurement are effectively solved.

The invention discloses a microwave power test method and platform and a multi-channel microwave power consistency control method. The microwave power test method comprises the following steps: firstly, adjusting the test environment temperature or the preheating time of a microwave signal source until the test environment temperature is within a preset temperature range and the preheating time of the microwave signal source meets a preset time range, then setting test parameters of the microwave signal source, and then starting from the initial power; adjusting the current output power of the microwave signal source according to the power step length, and controlling the microwave signal source to output a microwave signal to the to-be-detected detection module according to the current output power; the method comprises the steps that a microwave signal source is connected with a detection module to be tested, output voltage of the detection module to be tested is obtained, the output voltage is processed and stored, when current output power of the microwave signal source reaches end power, a test end signal is displayed, test is stopped, and input power test data and corresponding output voltage test data of the detection module to be tested are obtained. According to the invention, the efficiency and reliability of microwave power testing can be effectively improved.

The invention discloses a high-speed magnetic levitation power load hardware-in-the-loop simulation test platform and method, and relates to the technical field of hardware-in-the-loop, and the high-speed magnetic levitation power load hardware-in-the-loop simulation test platform comprises a tested controller and a power load simulation module. The power load simulation module is connected with the tested controller through a power cable and a digital signal line, and the power load simulation module can provide a power test environment required by operation for the tested controller. According to the high-speed magnetic levitation power load hardware-in-loop simulation test platform, high-power signal transmission and power characteristic real-time online simulation are realized, and the defect that signal-level hardware-in-loop simulation cannot meet the high-power test requirement of a controller driving part in the prior art is overcome; and the integrity and the accuracy of the test of the high-speed magnetic levitation system controller are obviously improved.

The invention belongs to the technical field of radiation refrigeration, and provides a radiation refrigeration power testing device and method, and the device comprises a testing device main body which comprises a case, and a water-cooling reverse synchronous verification module, a heating constant-temperature power testing module and a synchronous parallel comparison testing module which are disposed in the case; the small meteorological station is independently arranged around the testing device main body, comprises a temperature sensor, a humidity sensor, a wind speed sensor, an atmospheric pressure sensor, a solar irradiance sensor and a wireless transmission module, and is used for monitoring and transmitting environmental parameters in real time; and the monitoring terminal is used for receiving and storing the environment parameters and the test data sent by the wireless transmission module. Compared with the prior art, the water-cooling reverse synchronous verification module and the heating constant-temperature power test module are introduced, so that the accuracy of a test result can be verified in real time, active correction is performed through comparison with a theoretical value, and the accuracy of the test result is ensured.

The invention provides an equivalent test device and method for exploring gravity energy storage power characteristics. The device is characterized in that a test circuit is connected with an upper computer after being connected to a power grid; the test circuit is built based on a gravity energy storage grid-connected type and is used for outputting a torque curve corresponding to an equivalent torque curve signal of gravity energy storage so as to equivalently convert the reference power of the gravity energy storage into the torque of a motor for an equivalent test; the upper computer is used for generating a torque curve signal based on the reference power of gravity energy storage and writing the torque curve signal into the test circuit; and measuring the network side power of the test circuit in the test as a test result. According to the invention, the topological structure can be flexibly changed according to the gravity energy storage grid-connected type so as to be suitable for equivalent tests of different gravity energy storage grid-connected schemes; limitation of a gravity energy storage test site can be overcome, power characteristics of the gravity energy storage system in steady-state operation under different grid-connected topologies can be truly restored, equivalent tests of gravity energy storage technologies of different power levels can be carried out, and the accuracy of power test data can be improved.

The invention relates to the technical field of power equipment testing, in particular to a power test intelligent testing system which comprises a nameplate analysis module, a channel optimization module, a path configuration module, an interference identification module and an excitation regulation and control module. According to the method, the content of the nameplate of the equipment is extracted through image recognition to complete structural analysis of electrical parameters, a parameter feature set is established through information such as frequency, capacity, phase number and current, and test channel screening is achieved according to a set frequency point and channel capacity matching relation. The method comprises the steps of setting a path sorting mode and mapping response time parameters in combination with physical wiring characteristics and a phase number structure, marking channel combination interference levels based on an inductive interference identification mode, optimizing channel interference in an excitation process by adjusting an excitation sequence and a grounding strategy, and executing interval discrete regulation and control operation in combination with a frequency interval real-time judgment result. And collaborative optimization of test path construction, interference control and excitation sequence allocation is realized.

The invention discloses a generation power testing device and method for a small nuclear power generation system, and relates to the technical field of power testing, and the device comprises a deionized purified water tank, a coil pipe type electric heater and a heat exchanger. Wherein the coiled tube type electric heater is connected with a test prototype of a small nuclear power generation system to be tested through a power supply cable, and is used for converting electric energy output by the test prototype of the small nuclear power generation system into heat energy; deionized purified water with a set temperature in the deionized purified water tank enters the coil pipe type electric heater through a pipeline and a water pump, and after the temperature is increased through heat exchange, the deionized purified water carrying heat energy is subjected to heat exchange through the heat exchanger to reach the set temperature and then flows back to the deionized purified water tank. According to the invention, the problem of inaccurate generation power measurement caused by unstable generation quality of the small nuclear power generation system test prototype can be solved, and the generation power of the small nuclear power generation system test prototype can be accurately tested.

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 invention discloses an optical module testing system, which relates to the field of optical module testing technology. The optical module testing system includes an operating platform, multiple circuit sockets, multiple water sockets, and a test execution component. The operating platform is formed with multiple test stations, and the test stations are used to place optical modules; multiple circuit sockets are respectively arranged on the operating platform corresponding to the multiple test stations, and the circuit sockets are used to connect to the working circuit of the optical module for power supply; multiple water sockets are respectively arranged on the operating platform corresponding to the multiple test stations, and the water sockets are used to connect to the cooling water channel of the optical module for water supply; the test execution component is arranged on the operating platform and has a temperature test unit and a power test unit that can switch between the multiple test stations. The technical solution provided by the present invention alleviates the problem of long waiting time of the execution component in the existing optical module testing system, which leads to low testing efficiency of the testing system.

The invention discloses a lithium ion battery explosive power testing device and method. The testing device comprises an anti-explosion tank, a functional material, a thermal runaway triggering unit, a shock wave overpressure testing unit, an optical testing unit and an explosion noise testing unit. The functional material is laid on the inner wall of the anti-explosion tank and has the functions of heat insulation, flame retardance, sound absorption and wave absorption; a lithium ion battery to be tested is arranged in the anti-explosion tank; the thermal runaway triggering unit is used for triggering thermal runaway of the lithium ion battery to explode; the shock wave overpressure test unit is used for measuring a shock wave pressure curve after the battery explodes; the optical test unit is used for measuring luminous intensity and temperature after the battery explodes; the explosion noise test unit is located above the lithium ion battery to be tested and is used for measuring the sound intensity generated by battery explosion. According to the invention, the explosive power of the battery after thermal runaway can be comprehensively evaluated through a multi-dimensional test means.

The invention belongs to the technical field of quality detection, and provides a light high-reliability heat dissipation cold plate brazing forming process which comprises the steps that through multi-power testing, the surface temperature conditions of a heat dissipation cold plate finished product under different powers are obtained, a local overheating area is screened, the diameter of a welding spot air hole in the heat dissipation cold plate finished product is obtained, and a suspected welding spot defect area is obtained; carrying out coincidence analysis on the local overheating area and the suspected welding spot defect area to obtain a co-occurrence sub-area, carrying out synchronism analysis on the temperature and the pore diameter in the co-occurrence sub-area under overload power, judging whether relevance exists or not, if yes, obtaining a local temperature-welding spot defect relevance model, and if not, obtaining a local temperature-welding spot defect relevance model; and whether a high error exists in the current air hole diameter detection result of the heat dissipation cold plate finished product or not is judged based on the correlation model, if yes, correction is carried out, heat dissipation cold plate defect classification is carried out according to the air hole diameter of the heat dissipation cold plate finished product after correction, and the production quality and use reliability of the heat dissipation cold plate can be improved.

The present invention discloses a rapid evaluation method for the reflection crosstalk influence of a circulator fronthaul system, and relates to the field of optical communication technology. The method comprises: taking the DU side of the circulator fronthaul system as the local end and the AAU side as the opposite end, connecting a power test device to any receiving end of a local multiplexer for demodulating optical signals; obtaining a reflection equivalent influence factor of the receiving end based on the power test device, which is defined as the power difference between the power of the optical signal transmitted by the opposite end reaching the receiving end of the local end and the power difference between the reflected optical signal of the corresponding optical signal transmitted by the local end reaching the receiving end of the local end; comparing the reflection equivalent influence factor with a threshold value under predetermined conditions to evaluate the influence weight of the reflected optical signal on the circulator fronthaul system, and then determining whether the transmission line meets the design or construction requirements.

The utility model belongs to the technical field of electric power testing, and particularly relates to a DCC capacitor switching device for electric power testing, which comprises a rack, a sheath, three groups of switching electrifying mechanisms, a copper rod and a connection relation thereof. According to the invention, 'switching of three groups of capacitors' is converted into'switching of three electrified ball rods', the copper rod can only be in contact with one of the three electrified ball rods, and connection switching of the three electrified ball rods is completed by means of rotation of the sheath, so that capacitance switching of the three groups of capacitors is completed; only one servo motor is needed, multiple driving sources are not needed, the operation mode is greatly simplified, and the failure rate is reduced; meanwhile, the overall structure is compact, structural components are reduced, correspondingly, the size and weight of the overall structure are reduced, and practical application is facilitated.

The invention belongs to the technical field of robots, and particularly relates to a hydraulic drive robot power system test platform which comprises horizontal double guide rails (1), parallel double stand columns (2), a robot connecting plate (3), a power test robot (4), a hydraulic system (5) comprising a tested power system and a sensing and control system (6). In order to realize actions of multiple motion modes of the robot, each mechanical leg is driven by three driving branches, and each driving branch is controlled by an independent hydraulic servo valve; the hydraulic servo valve controls the pressure and the flow supplied to the hydraulic cylinder by controlling the position of the valve core, so as to control the action of the mechanical leg; state data of the power test robot (4) in various motion modes are monitored in real time through the sensing and control system (6), so that whether indexes of power, pressure, flow and response time of the tested power system (5.1) in different working conditions meet requirements or not is tested.

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 utility model is suitable for the technical field of automobile testing, and provides an aerocar power unit test board, which comprises a support table, a flight power test unit and a plurality of natural wind simulation components, and is characterized in that the support table is used for being assembled on the ground or a building; the flight power test unit is assembled on the supporting table and is used for carrying out flight power test; the plurality of natural wind simulation assemblies are annularly assembled on the supporting table in a sliding manner; the flight power test unit comprises a flight impeller assembly, a connecting belt assembly and a dynamometer; the dynamometer is assembled on the supporting table, and the flying impeller assembly is connected to the dynamometer through the connecting belt assembly; the connecting belt assembly is used for transmitting the flight power of the flight impeller assembly to the dynamometer from multiple angles; and the plurality of natural wind simulation assemblies provide natural wind with different wind speeds for the flight impeller assembly from different angles, so that simulation tests can be carried out by simulating actual environments with different types of natural wind.

The utility model discloses a laser power test auxiliary device, which comprises a base, a fixing assembly, a beam expanding assembly and a laser power meter, and is characterized in that the fixing assembly is mounted on the base and is used for mounting a laser output head; the beam expanding assembly is used for expanding the laser output by the laser output head; the laser power meter is installed on the base and used for receiving the laser expanded by the beam expanding assembly and detecting the power of the laser. According to the laser power test auxiliary device provided by the embodiment of the invention, the laser output by the laser output head is expanded through the beam expanding assembly so as to reduce the energy density of the laser, then the laser expanded by the beam expanding assembly is transmitted to the laser power meter, and the power of the laser expanded by the laser is detected by the laser so as to reduce the energy density of the laser. The risk of laser breakdown of the laser power meter can be reduced.

The invention discloses a resistance test device for a depth-variable underwater vehicle, and the device is characterized in that a support frame is fixedly installed at the bottom of a hydrodynamic test trailer, and two groups of guide rail assemblies in the support frame are symmetrically arranged at the two sides of the bottom of the central axis of the hydrodynamic test trailer; two groups of sliding block connecting structures at the bottom end of the motion bearing platform are fixedly connected with the sliding blocks in the guide rails on the two sides, and the motion bearing platform and the supporting frame are locked and fixed; the lifting test mechanism penetrates through the middle part of the motion bearing platform through a lifting screw rod, and the lifting screw rod is matched with a hand wheel; the underwater vehicle model lifting device is fixedly connected with an underwater vehicle model through a model connecting assembly on the lower portion of the underwater vehicle model lifting device, and the model connecting assembly and the underwater vehicle model are vertically lifted or descended through the action of a hand wheel on a lifting lead screw, so that the underwater vehicle model is mounted or dismounted on the water surface. And ascending and descending of the underwater vehicle model in the test process.

The invention relates to the technical field of battery modeling, and discloses a battery multi-dimensional parameter identification method, a battery multi-dimensional parameter identification device and battery multi-dimensional parameter identification equipment for electric power energy storage. Determining to-be-identified parameters of the to-be-detected electric energy storage battery, wherein the to-be-identified parameters comprise an instant response parameter, a fast polarization parameter, a medium polarization parameter and a slow polarization parameter; performing a constant current mixed pulse power characteristic test on the to-be-tested electric energy storage battery to obtain a constant current test result, and obtaining an instant response parameter and a fast polarization parameter according to the constant current test result; performing constant-power mixed pulse power characteristic test on the to-be-tested electric energy storage battery to obtain a constant-power test result; and optimizing and calibrating a constant-current test result by combining the instantaneous response parameter, the fast polarization parameter and the constant-power test result to obtain an identification parameter of the to-be-tested electric energy storage battery. The battery parameters obtained through identification are closer to the operation condition of the electric energy storage battery, and distortion is reduced.

The invention discloses a thermodynamic test bench with pressure large amplitude transient regulation, and belongs to the technical field of thermodynamic test equipment, the thermodynamic test bench comprises a thermal test bench, the front and rear sides of a thermal test sleeve are respectively communicated with a gas injection pipe and a material injection pipe, and the thermal test sleeve is provided with a gas injection regulation mechanism for regulating the gas injection pressure and temperature. An exhaust adjusting mechanism is arranged on the thermal test sleeve and used for adjusting exhaust pressure. Through cooperation of the exhaust partition plate and the electric push rod, when the electric push rod rapidly moves the exhaust partition plate, the volume of an exhaust cavity of a combustion chamber can be instantly changed, a sudden pressure drop or rise working condition is created, and pressure transient change in flight of an airspace engine is accurately simulated, and through cooperation of an air pressure monitoring plug and a compression spring, when the air inlet pressure is lower than a threshold value, the air pressure can be monitored. And the pre-tightening force of the compression spring is adjusted through the hydraulic push rod, so that the minimum air inlet pressure threshold value can be flexibly set, and different test scenes of the airspace engine can be adapted.

This application provides a method, electronic device, and storage medium for online power monitoring of photovoltaic modules. The method includes: constructing verification conditions; determining a valid test time based on pre-established verification conditions (string operating status verification, irradiance integer value verification, and irradiance stability verification); real-time power correction of the module based on the measured irradiance and cell temperature at the valid test time; determining the online power test value based on the corrected power value under the same integer irradiance reference value; when the integer irradiance reference value reaches a preset high irradiance threshold, correcting the online power test value to standard test conditions to obtain a comparable online power test value; determining the current control reference for the current test cycle based on its corresponding factory power correction value; and updating the dynamic iterative control reference based on the current control reference and historical control references to perform power anomaly monitoring. This application achieves accurate online testing and anomaly identification of photovoltaic module power.

The invention provides a complete machine test system calibration method and device applied to a power test, and particularly relates to the technical field of radio frequency and microwave. According to the method, a radio frequency signal is generated through a signal source, is amplified through a power amplifier and then is guided to a bi-directional coupler through a circulator, one path is transmitted to the input end of a test line in a vacuum tank, and the other path is transmitted to the output end of the test line; after being attenuated by the attenuator, the signals are detected by the power probe and transmitted to the power meter; and the other path of coupling signal is processed by the signal separation device, detected by the power probe and transmitted to the power analyzer. And by comparing a detection value of the power meter with a display value of the power analyzer, the power analyzer is set to be offset so as to realize calibration. The method solves the technical problems of how to accurately and efficiently calibrate the complete machine test system in a high-power state and how to ensure the reliability and safety of the equipment during high-power operation, so that the calibration accuracy of the complete machine test system can be remarkably improved, the test speed is accelerated, and the test efficiency is improved. And the reliability and the safety of the equipment during high-power operation are ensured.

The present invention provides a modular testing device for fuel cells, which belongs to the field of fuel cell technology and solves the problem that existing testing devices do not meet the current high-power test requirements and the testing process costs are too high. The device includes an air supply unit, a signal acquisition unit, a temperature control unit, and a host computer. The air supply end of the fuel cell to be tested is connected to the output end of the air supply unit, and the cooling end is connected to the temperature control unit. The signal acquisition unit collects the output electrical signal of the fuel cell to be tested in real time, and sends the power supply signals of the air supply unit, the signal acquisition unit, and the temperature control unit to the host computer. The host computer controls the start-up of the air supply unit, the signal acquisition unit, and the temperature control unit; and, based on the electrical signal output by the signal acquisition unit, determines the health status of the fuel cell and the total power consumption and power consumption trend of the device, and switches the power supply of each unit from single use to parallel mode when the total power consumption continues to increase or the collected electrical signals continue to increase.

The application discloses an explosion-proof test circuit based on an IGCT power module, wherein a first plate of a capacitor module is electrically connected with a first end of a first power test unit, a second plate of the capacitor module is electrically connected with a second end of a second power test unit, and the first power test unit and the second power test unit are connected in series. The first power test unit comprises a conductive pad and an insulating pad, or the second power test unit comprises a conductive pad and an insulating pad. In this way, a straight-through short-circuit fault between the first power test unit and the second power test unit is simulated through the insulating pad and the conductive pad, and the voltage information and the current information of the capacitor module when the straight-through circuit fault occurs are verified, so that the straight-through short-circuit fault test can be realized through the explosion-proof test module, a complete converter valve or valve section is not needed to be formed, the experimental condition is simple, and the test is convenient.