148 results about "Temperature testing" patented technology

The invention relates to the technical field of material mechanical property testing, and provides an ultralow-temperature slow strain mechanical tensile test platform which comprises a vacuum Dewar unit, a liquid helium temperature control unit, a slow strain tensile unit, a measuring unit and a control unit, the vacuum Dewar unit comprises a vacuum Dewar body and is used for providing a closed low-temperature test environment; the liquid helium temperature control unit comprises a direct injection module and a recovery module, the direct injection module is used for directly injecting liquid helium to the gauge length section of the sample for cooling, and the recovery module is used for recovering and recycling unevaporated liquid helium; the slow strain stretching unit is used for stretching a sample arranged in the vacuum Dewar body at a low strain rate; the measuring unit is arranged in the vacuum Dewar body and is used for monitoring the temperature, the force value and the strain data of the sample in real time. Liquid helium is used as a cold source, the liquid helium is directly aligned to the gauge length section of the sample through the direct injection module, and compared with a traditional liquid helium steam natural convection heat exchange mode, the heat exchange coefficient is increased, and automatic precise temperature control is achieved.

Systems and methods are directed toward low temperature testing of motion, vibration, or force responses of test fixtures. For cryogenic shock testing, a test object can be secured on a test apparatus, such as a test fixture of a shock table. An elongated enclosure, such as a flexible tube, can be connected between the test fixture and a laser vibrometer, positioned orthogonal to a surface normal at a test region of the test fixture to enable light emitted by the vibrometer to be reflected from the test region back to the vibrometer. A flow of purge gas can be introduced into the tube, proximate the test fixture, to direct moisture away from the test fixture. The flow can prevent condensation or ice from forming on the surface of the test fixture at the cryogenic temperature. A shock event can be simulated, and the response of the test region measured by the laser vibrometer. The impact of the shock event on the test object can then be observed.

The invention discloses a testing method and device of a low-temperature pump, electronic equipment and a storage medium, and relates to the technical field of vacuum technology and vacuum pump performance tests.The testing method of the low-temperature pump comprises the steps that the first pressure of a first inflation chamber is obtained, and an air distribution mode is determined based on the first pressure; after gas distribution is completed based on the gas distribution mode, an impact test is started to introduce gas into the cryogenic pump; and acquiring temperature test data of the cryogenic pump, and determining the validity of the current test based on the temperature test data. According to the testing method of the low-temperature pump, the gas distribution process is more accurate through multiple gas distribution modes, the validity of the test data is judged through the temperature test data of the impact test, and the transition capacity parameter of the low-temperature pump is subjected to process inspection depending on experience; the method is converted into a standardized metering process which is high in reliability, high in efficiency and reproducible.

The present application relates to the technical field of temperature test, in particular to a structure surface temperature test system based on color difference identification of photosensitive coating, which comprises a color difference feature extraction module, a heat conduction track analysis module and a temperature gradient reconstruction module.In the present application, the dynamic gradient analysis technology is used to capture the space-time evolution characteristics of the chroma field, improve the identification sensitivity of the non-uniform thermal field, maintain the stable temperature resolution under complex illumination, identify the propagation path of the transient thermal shock based on the cluster motion mode recognition of the heat conduction track, shorten the system response delay, adopt the nonlinear temperature-sensitive characteristic compensation mechanism to overcome the measurement deviation caused by the coating process difference, realize the higher precision temperature reconstruction of the curved surface structure, combine the spatial correction and the directional weighting to enhance the spatial analysis ability of the temperature gradient field, accurately identify the small heat influence area, and significantly reduce the temperature field reconstruction error of the large-scale structure through the multi-dimensional coupling analysis, so that the engineering applicability is better than that of the traditional method.

A variable temperature test system and an operation method thereof are provided. The variable temperature test system includes a main control device, multiple test devices, and a variable temperature test platform. The variable temperature test platform is coupled to the main control device and the test devices. The main control device provides an adjustment parameter according to at least one pending test. The variable temperature test platform includes multiple test areas, multiple temperature sensors, and a temperature control module. The test areas are respectively coupled to the test devices. The temperature sensors are respectively disposed in the test areas. The temperature control module is coupled to the test areas. The temperature control module adjusts a temperature of at least one test area according to the adjustment parameter.

This invention discloses a testing method, apparatus, electronic device, and storage medium for cryogenic pumps, relating to the technical fields of vacuum technology and vacuum pump performance testing. The testing method includes: acquiring a first pressure in a first filling chamber and determining a gas distribution mode based on the first pressure; after completing gas distribution based on the gas distribution mode, initiating an impact test to introduce gas into the cryogenic pump; acquiring temperature test data of the cryogenic pump and determining the validity of the current test based on the temperature test data. This invention's cryogenic pump testing method makes the gas distribution process more precise through multiple gas distribution modes, and determines the validity of the test data through the temperature test data from the impact test. This transforms the cryogenic pump's pass-through capacity parameter from an experience-dependent process check into a highly reliable, efficient, and reproducible standardized measurement process.

The invention discloses a mechanical friction spark temperature testing method based on multiple thermocouples and particle size analysis, which comprises the following steps of: 1, preparing a test piece, processing the surface of a friction test piece, and fixing an embedded thermocouple array in the test piece; secondly, dynamic pressure loading is conducted, and friction pressure is adjusted through a high-pressure air bottle and a piston type air cylinder; 3, synchronously monitoring multiple thermocouples, and arranging the thermocouples to synchronously acquire data; step 4, spark particle size capturing: a high-speed camera and a laser particle size analyzer are adopted to acquire particle size distribution and speed track of spark particles in real time; 5, temperature-particle size correlation correction is carried out, and a temperature attenuation model is established based on the specific heat capacity and the heat conductivity coefficient of spark particles; and step 6, data fusion output: fusing and outputting analysis results. A plurality of thermocouple arrays are arranged at the center and the edge of a friction interface and on a spark splashing path, and temperature data in the friction heat and spark cooling process are synchronously collected.

The utility model provides a device for testing airflow temperature of a hot air gun. The device comprises an airflow protection box body assembly, a hot air gun fixing assembly and a temperature sensor fixing assembly. The airflow protection box body assembly comprises a box body, a heat insulation cabin, a heat flow guider, a flow guide pipe and a noise reduction buffer, and drainage and isolation of high-temperature airflow of the heat gun are achieved. The hot air gun fixing assembly comprises a first guide rail, a sliding seat, a connecting piece and a hoop, and is used for fixing a hot air gun body and adjusting the horizontal distance and the vertical distance between the hot air gun body and the sensor; the sensor fixing assembly comprises a second guide rail, a sliding block and a mounting base, and the temperature sensor is fixed and the distance between a probe and a hot air gun muzzle is adjusted. The device can solve the problem that no fixing device exists during calibration of the heat gun, and ensures that the axial distance from the center of a muzzle of the heat gun to a probe of a temperature sensor meets the requirement during testing; meanwhile, the influence of high-temperature airflow on the detection environment temperature can be effectively prevented, and the risk of burn caused by the high-temperature airflow is avoided.

The invention belongs to the technical field of high-temperature testing of pipes, and discloses a non-magnetic high-temperature testing device and a non-magnetic high-temperature testing method. The non-magnetic high-temperature testing device comprises a non-magnetic high-temperature heating cylinder made of a non-magnetic material, a moving and transporting sliding table and a moving and transporting trolley, the non-magnetic high-temperature heating cylinder is provided with a heating layer, and the axis direction of the non-magnetic high-temperature heating cylinder is arranged in the first direction; the moving sliding table is arranged at one end of the non-magnetic high-temperature heating cylinder and can be far away from or close to the non-magnetic high-temperature heating cylinder in the first direction; the moving and transporting sliding table is provided with a moving and transporting track arranged in the first direction, the to-be-tested pipe is supported on the at least two moving and transporting trolleys in a height-adjustable mode, the moving and transporting trolleys can run along the moving and transporting track to drive the to-be-tested pipe to enter or leave the interior of the non-magnetic high-temperature heating cylinder, and the to-be-tested pipe and the non-magnetic high-temperature heating cylinder are coaxial. According to the invention, the influence of magnetic interference on the high-temperature test of the pipe is solved, and the transfer of the to-be-tested pipe with the long-axis characteristic and the improvement of the heating uniformity are facilitated.

The utility model discloses a kind of thermocouple response time measuring devices, including measuring pipeline, vertical pipeline, electric heating equipment and fixture, one end of measuring pipeline is provided with import, the other end is provided with export, vertical pipeline is vertically set on measuring pipeline, and with the inside of measuring pipeline is communicated, electric heating wire is set on the outer surface of measuring pipeline and vertical pipeline, fixture is located at the top of measuring pipeline, and fixed plate is vertically slidably arranged on fixture;High thermal conductivity lead bismuth liquid is used as medium in the application, heat can be quickly transferred to thermocouple and armored sleeve, reduce the lag caused by sleeve thermal resistance, fit actual working condition, reduce the measurement deviation caused by medium thermal property difference;Electric heating equipment precision temperature control, cooperate with flowing lead bismuth liquid, both ensure that step temperature test is accurate, and simulate actual dynamic heat exchange, avoid the response time misjudgment caused by heat accumulation at sleeve under static state.

This application discloses an in-situ mechanical testing system and method for aero-engine turbine blade materials. The system includes: a multi-axis loading unit for simulating the multi-axis stress state of turbine blades under actual operating conditions; a high-temperature environment module for achieving localized rapid heating of the sample; an in-situ observation system integrating a long-working-distance high-temperature microscope and a high-speed camera for real-time observation and recording of the microscopic damage evolution of the turbine blade sample during high-temperature loading; and a control unit with a built-in temperature-stress decoupling control model and a microscopic defect identification model for real-time compensation of the thermal effects of plastic deformation and quantification of the damage factor D. This application achieves synchronous loading of centrifugal force through a three-axis servo actuator, accurately reproducing composite stress with small load errors, overcoming the limitation of traditional single-axis testing in simulating multi-source loads on blades. Simultaneously, this application reduces interference from plastic work-induced temperature rise, solving the technical problem of data distortion caused by temperature drift in high-temperature testing.

The invention discloses a remanufacturing method for reusing a K-type thermocouple temperature sensor, and the method comprises the steps: shearing a choke plug metal tube through a pair of pliers, taking out an insulating sheath, shearing a burnt section in a connection part of a first metal wire and a second metal wire, separating the first metal wire and the second metal wire, and stripping insulating skins outside the first metal wire and the second metal wire by 1-2cm, the exposed parts of the first metal wire and the second metal wire are fixedly connected, and the connecting part of the first metal wire and the second metal wire is adhered to the shell of the sealing equipment which needs to be sealed during use by using a sealant. By modifying the damaged sensor probe, the damaged sensor can be reused for testing some temperature testing requirements without special tools, and by matching with the sealant and adding a temporary shield to the modified thermocouple probe, temperatures such as air temperature, water temperature and the like with sealing requirements can be more conveniently tested. Tooling procedures are omitted, and convenience and quickness are achieved.

The invention discloses detection equipment applied to a traffic operation and maintenance heat pump system and a fault diagnosis method, and belongs to the technical field of traffic infrastructure maintenance, the detection equipment comprises a box body and a heat pump fault tester, and the tester is internally provided with a temperature test unit, a power consumption test unit, a data acquisition unit and a fault analysis unit. The temperature testing unit detects environment temperature and inlet and outlet temperatures of a heat pump condenser and an evaporator. The power consumption testing unit detects operation current of a compressor of a heat pump. Monitoring data are stored in the data acquisition unit, and the fault type is judged and fault information is output through the fault analysis unit. According to the fault diagnosis method provided by the invention, the comparison judgment basis and the fault diagnosis logic of the normal range and the multi-order change interval of the heat pump state index are provided, the real condition of the heat pump can be comprehensively reflected, and an accurate fault type judgment result is given. Fault diagnosis is performed on the heat pump system by taking the temperature and the current as test indexes, and the device is convenient to carry and high in detection efficiency.

The utility model aims at providing a kind of high-efficient real-time constant-temperature control measuring device of constant temperature control and monitoring provided by simulation heat source.It is provided that the utility model includes heating unit, control unit and temperature acquisition unit, the control unit includes processor and heating control module connected by electric signal, the temperature acquisition unit acquires the temperature data of the heating unit and is connected with the processor by electric signal, the heating control module includes two-way control module, controllable power output module, controllable constant-current source module and current acquisition module, one output of the two-way control module is connected to the controllable power output module, another output of the two-way control module is connected with the controllable constant-current source module, the output of the controllable power output module is connected with the controllable constant-current source module, and the controllable constant-current source module is electrically connected with the heating unit.The utility model is applied to the technical field of temperature test.

The utility model provides a heat conduction testing device in a vacuum environment. When a product is tested, the product to be tested is placed on the test fixture in the vacuum box through the vacuum cover plate door, then the vacuum generator vacuumizes the interior of the vacuum box, meanwhile, the air pressure sensor monitors the air pressure in the vacuum box until the air pressure in the vacuum box reaches a set negative pressure value, and then the test fixture is started. The heating circulation system heats or cools a to-be-tested product on the test fixture through a temperature conducting medium for providing the temperature of the water cooling plate conveying belt, and meanwhile, the test fixture monitors the temperature of the to-be-tested product through a temperature monitoring element, so that a temperature test environment is provided for the to-be-tested product; the product to be tested is isolated from the outside through the vacuum environment, so that when the product is tested, the influence of external temperature change and fluctuation and interference of other impurities such as heat radiation and the like on the stability and the accuracy of the test can be effectively avoided; the utility model belongs to the technical field of test equipment.

This utility model relates to the field of lubricating oil performance testing technology, specifically a two-phase separation temperature testing device, including a sapphire autoclave. A testing component is mounted on the top of the sapphire autoclave, and a protective component is mounted on one side of the autoclave. The testing component includes a sealed top cover, and a first sample inlet tube is fixedly connected inside the sealed top cover. This two-phase separation temperature testing device, by installing the testing component, allows the first and second sample inlet tubes to be inlet pipes for refrigerant and refrigeration oil at room temperature. A "constant pressure injection vessel" achieves high-temperature, constant-pressure refrigerant injection, thereby changing the refrigerant / refrigeration oil ratio in the system. This allows for continuous testing without cooling, saving testing time.

The utility model provides sealant performance detection equipment, which comprises a heat insulation box, a heating assembly, a temperature detection assembly and a test assembly, a heating cavity is formed in the heat insulation box, a test seat is arranged in the heating cavity, the test seat is used for placing sealant, the heating assembly is arranged in the heating cavity, the temperature detection assembly is arranged around the test seat, and the temperature detection assembly is arranged around the test seat. One end of the testing assembly is arranged in the heat preservation box, and the other end of the testing assembly penetrates through the heat preservation box and extends into the heating cavity so as to test the sealant of the testing seat. According to the sealant performance detection equipment provided by the invention, the test assembly is arranged in the heat preservation box, and the temperature in the heat preservation box is cooperatively controlled through the heating assembly and the temperature test assembly, so that the temperature of the test assembly during an experiment is controlled, and the problem that some sealant performance detection equipment can only be used for an experiment at room temperature is solved.

The utility model discloses a gasoline saturated vapor pressure constant-temperature testing device which comprises a box body, a water bath is arranged at the top of the box body, a cover plate is rotatably matched with the top of the water bath, a fixing assembly is arranged between the water bath and the cover plate, and a pressure gauge, a glass thermometer and a testing instrument are installed at the top of the box body. A moving frame is slidably matched in the water bath, the bottom of the moving frame is elastically matched with the bottom of the water bath, the moving frame is U-shaped, the bottom of the cover plate abuts against the top of the moving frame, a placing groove is formed in the bottom of the inner wall of the moving frame, and two rotating rods are rotatably matched in the moving frame. Through the arrangement of the rotating rod, a tank body for storing gasoline can be placed on the placing groove in the moving frame, and the cover plate extrudes the moving frame and the placing groove to enter the water bath, so that the rotating rod extrudes the bottom of the water bath to rotate, and the rotating rod conveniently drives the arc-shaped clamping block to fixedly support the tank body; and the influence of special conditions on the tank body is reduced.

Disclosed herein is a test handler and corresponding test system for thermally controlling a plurality of devices under test (DUTs) by use of one or more thermal heads, while they are being tested in parallel. In some embodiments, a thermal head comprises a heat exchanger assembly, a piston block assembly, and a match plate assembly. In some embodiments, each individual DUT may have its temperature controlled independently by components, such as individual heaters, within the thermal head. The test handler may comprise a T-tray loading area, a temperature pre-soak area, a testing area, a temperature de-soak area, and a JEDEC tray loading area. In some embodiments the pick and place mechanism in the T-tray loading area may change the pitch or grid location of DUTs picked from a transport medium on the fly to a different pitch or location grid to match the socket placement on the tester load board.

The utility model discloses a high and low temperature testing device for a manipulator, which comprises a testboard, the top of the testboard is provided with a measuring and moving mechanism capable of horizontally moving, the measuring and moving mechanism comprises a clamp assembly for locking and hanging the manipulator, and the clamp assembly comprises a motor and a hanging frame arranged at the output end of the motor; a plurality of clamp structures are hinged to the hanging frame, and the mechanical arms are locked on the clamp structures. The device further comprises a cold medium groove and a hot medium groove which are matched with the displacement measuring mechanism, in the testing process, the mechanical arm is soaked in the cold medium groove to be subjected to cold soaking, the displacement measuring mechanism moves into the hot medium groove to be subjected to hot soaking, automatic testing is achieved in the mode, the testing efficiency is improved, and the testing safety is improved.

The utility model discloses an A2L hot surface ignition temperature test special device, which comprises a test box and a spraying type pipe arranged in the test box, the surface of one end of the spraying type pipe is fixedly connected with a refrigerant tank with a valve, one side of the refrigerant tank is provided with the valve which is communicated with the interior of the refrigerant tank through the spraying type pipe, and the other side of the refrigerant tank is provided with the spraying type pipe. A glass barrel is arranged on the peripheral side, close to one end, of the spraying type pipe, a metal disc is fixedly installed on the surface of the lower end of the glass barrel, a thermocouple is fixedly installed on the surface of one side of the metal disc, a heat insulation pad is fixedly connected to the peripheral side surface of the metal disc, and one side, extending to the heat insulation pad, of one end of the metal disc is fixedly connected with a heating plate; according to the utility model, through the arrangement of the spraying type pipe, stable conveying and controlled release of the refrigerant can be realized, the refrigerant can be accurately sprayed on the metal disc, and the refrigerant is fully contacted with the hot surface, so that the ignition temperature of the hot surface is tested, and the effect of accurate test result is achieved.

The invention belongs to the technical field of low-temperature testing, and particularly relates to a new material low-temperature testing device based on sodium hexadecyl sulfonate, which comprises low-temperature equipment, a supporting mechanism, a transverse moving mechanism, a valve plate component, a heat preservation cover, a mixing mechanism, a movable cover and a vibration component, the supporting mechanism comprises a positioning frame, a lead screw, a driving motor and a convex block, the positioning frame is connected between the low-temperature equipment, the lead screw is arranged at the front end of the positioning frame, the driving motor is arranged at the tail end of the lead screw, test liquid is dropped into the low-temperature equipment, and the transversely-moving movable cover synchronously drives the mixing mechanism to move; after the transverse moving mechanism crosses the water pool, the mixing mechanism drives the movable cover to reset, temperature loss is avoided, manual opening and adding one by one are not needed, the testing efficiency is improved, and meanwhile the testing effect is guaranteed.

This utility model discloses a windless temperature uniformity control device for a temperature testing machine, including a temperature testing machine body. A pull-out box is provided in the chamber of the temperature testing machine body. The pull-out box includes a panel and a support frame. The panel is positioned in the opening of the chamber, and the support frame is installed on the inner side of the panel. Grooves are provided on both sides of the panel. The inner wall of the chamber protrudes from the grooves to form a sealing part, which is inserted into the groove. The opening of the chamber is covered by the panel and the sealing part. Multiple support plates are provided inside the support frame. A baffle, positioned and pressed by the pull-out box, is located deep within the chamber of the temperature testing machine body. This utility model has a simple structure, allowing products to be removed all at once, eliminating the need for individual removal. As the pull-out box is removed, the baffle is pushed out by the return of a second compression spring until it blocks the opening of the chamber, greatly reducing the intake of external air and minimizing fluctuations in the internal temperature, thus ensuring the efficiency and quality of subsequent testing.

This application relates to a resistance temperature coefficient testing device, comprising: a controller; a temperature control stage assembly electrically connected to the controller, the temperature control stage assembly being used to place a sample to be tested, allowing the sample to be subjected to multiple different temperature environments; a temperature testing element for detecting the temperature value at the location where the sample is placed on the temperature control stage assembly; a resistance detection structure including a clamping assembly and at least one pair of probes, the clamping assembly clamping the sample to the temperature control stage assembly, and the probes simultaneously contacting the sample to form a detection circuit to detect the resistance value of the sample; the clamping assembly including a mounting plate having multiple equally spaced mounting holes, into which the probes are inserted. This device can solve the problem of the inability to quantitatively control the probe spacing during repeated testing, improving testing accuracy; in addition, the multiple equally spaced mounting holes on the mounting plate can simultaneously fix multiple pairs of probes, enabling simultaneous testing at multiple sites and improving testing efficiency.

The utility model relates to the field of fan testing, in particular to a temperature control room for fan temperature testing, which comprises a controller, a temperature control room body, a heating component, a room door and an air outlet, the heating component comprises a main heating assembly with a plurality of output ends, and a plurality of temperature sensors are further arranged in the temperature control room body. The controller is electrically connected with the heating part and used for controlling the heating part to work, the stability and the consistency of the testing environment are ensured by accurately controlling the temperature condition in the temperature control room, and therefore the accuracy and the reliability of the fan temperature testing result are improved. The problems that the fan performance temperature test condition is unstable and the test result is inaccurate under the specific temperature condition are solved.

The utility model discloses a high safety type high temperature testing machine relates to high temperature testing machine field, including high temperature testing machine body, the bottom rotation of high temperature testing machine body is connected with movable strip, the bottom installation of high temperature testing machine body has safety protection seat, the both sides symmetry of safety protection seat inner chamber are connected with positioning assembly, the inner chamber of safety protection seat installs heat dissipation subassembly, the outer wall of high temperature testing machine body is installed and has fire extinguishing subassembly, the top of fire extinguishing subassembly installs fire extinguisher, the side of fire extinguishing subassembly top is swinged and is connected with positioner. The utility model discloses a high safety type high temperature testing machine, through setting up fire extinguisher, can cooperate with the fire extinguishing treatment of feed pipe and spray opening to it when the fault appears when high temperature testing machine body test, based on this can improve the safety of high temperature testing machine body test, through setting up positioner, can adapt to the installation of various size fire extinguisher.

The utility model relates to the technical field of oil quality detection, in particular to a device for measuring density and temperature on line during oil discharge of a gas station, which comprises a transparent glass measuring cylinder, a hydraulic quick connector is arranged on the side face of the lower end of the transparent glass measuring cylinder, and one end of a quick connection hose is connected to the hydraulic quick connector. And a sealing cover and an anti-overflow valve are arranged at the top of the transparent glass measuring cylinder. After density and temperature testing is completed, the sample oil can be sucked back to the oil tank along with negative pressure generated after oil discharging. The overall design of the device can effectively ensure that an oil sample is not in contact with external air in the whole measurement process, and the influence of external factors on a measurement result is avoided, so that the accuracy and the consistency of measurement data are improved, operators are protected to be healthier without inhaling oil gas, and the operators are protected to be safer without exposing oil in the air; meanwhile, continuous and real-time density and temperature measurement is achieved, instant feedback is provided, the detection efficiency is improved, and health and safety are achieved.

The utility model discloses a temperature testing device which comprises a testing box, a thermal resistance testing mechanism and a thermal radiation testing mechanism. The thermal resistance testing mechanism comprises a first heating base arranged above the testing box, a first thermocouple arranged in the first heating base in a penetrating mode, a first rack arranged on the rear side of the first heating base and arranged above the testing box, a lifting adjusting lead screw arranged on the table top of the first rack in a penetrating mode, and a lifting plate arranged below the first rack and connected with the lifting adjusting lead screw. The clamping plate is arranged on the side, close to the first heating base, of the lifting plate, the heat dissipation assembly is arranged above the clamping plate, the first temperature measuring assembly is arranged in the first heating base and connected with the control assembly, and the second temperature measuring assembly is arranged in the first clamping plate and connected with the control assembly. According to the invention, thermal resistance testing and thermal radiation testing can be rapidly carried out on different electronic products, changes of real-time test data of the products can be accurately mastered, the accuracy and reliability of the test data are effectively improved, and data management and sharing are facilitated.

The utility model relates to the technical field of high and low temperature testing environment boxes, in particular to a material high and low temperature mechanical property testing environment box which comprises a sealing box door hinged to the high and low temperature testing environment box, and a testing mechanism is arranged in the high and low temperature testing environment box. Through cooperation of the rotating lead screw and the threaded sliding table, the U-shaped frame is pulled to move outwards, so that a plate is pulled to be stretched outwards until the plate is broken, the ultimate stretching value of the plate is measured, the plate clamped in the U-shaped frame is driven by the driving motor to be bent until the plate is distorted, and the distortion value of the plate is measured. Laser emitted by the laser generator irradiates the laser receiving plate until the laser emitted by the laser generator moving downwards is partially shielded by the expanded plate and cannot irradiate the laser receiving plate, the expansion height of the plate at the moment is recorded and compared with the initial thickness, and the expansion deformation degree of the plate after thermal expansion and cold contraction can be measured.

The present utility model relates to the technical field of low-temperature testing apparatuses. Disclosed is a BMS low-temperature functionality testing device, comprising: a housing, a temperature changing member, and a temperature control assembly; the volume of the housing is less than 150 cm3, the housing is provided with a through hole, the temperature changing member is disposed in the housing, and the temperature changing member is provided with a thermally conductive accommodating portion, used for accommodating a BMS; the thermally conductive accommodating portion at least partially protrudes from the through hole; the temperature control assembly is connected to the housing, and is electrically connected to the temperature changing member, so as to adjust the temperature such that the thermally conductive accommodating portion reaches a temperature required for BMS low-temperature testing. Compared with existing BMS low-temperature testing devices, the overall volume of the BMS low-temperature functionality testing device of the present application is smaller, while ensuring that the BMS can undergo low-temperature testing. When the BMS low-temperature functionality testing device needs to be used outside, the mobile housing can move the BMS low-temperature functionality testing device, which is more convenient to carry, enables the BMS low-temperature functionality testing device to be used indoors or outdoors, has wider application scenarios, can be carried and used at any time as a portable tool, and has better practicability.