55 results about "Life testing" patented technology

The invention relates to a dynamic adjust gyroscope life forecasting method based on gray model. By data collection of vibration effective value, random drift and environmental temperature parameter which are preprocessed using radial neural networks, influence of environmental temperature on vibration effective value and random drift is eliminated and random drift and effective value just related to time are obtained by subtracting drift constant value term, then trend term of vibration effective value and random drift are extracted by using wavelet transformation and gray model are built separately for their trend term. The smaller data in two values of life predicted of dynamic adjust gyroscope unless two predicted values exceeding performance parameter limitation when dynamic adjust gyroscope is considered losing effect. The invention uses performance parameter of life probative period of product to predict its life, showing discipline of performance parameter and life of dynamic adjust gyroscope. It is easy and convenient economical and reliable.

The utility model discloses a device for testing the service life of a gear motor, and particularly relates to the technical field of detection equipment, which comprises a torque sensor and an input transition seat. The torque sensor, the input transition seat and the load gear motor are all arranged on the workbench, the tested gear motor is fixedly installed at one end of the input transition seat, and an output shaft of the tested gear motor is fixedly connected with the input end of the input transition seat. The output end of the input transition seat is fixedly connected with the input end of a torque sensor through a first coupler, and the output end of the torque sensor is fixedly connected with a rotating shaft of a load gear motor through a second coupler. According to the utility model, the load gear motor and the input transition seat are arranged, the tested gear motor is fixed on the input transition seat and is powered by the tested gear motor, and the load gear motor is arranged at the tail end to serve as a load, so that the working environment of a conventional gear motor is simulated, and the service life of the gear motor can be conveniently tested after long-time operation of the gear motor.

The invention discloses a device for testing the service life of a disc spring under a special working condition, which belongs to the technical field of disc spring testing and comprises a base and a disc spring body, four testing cylinders and a testing lifting plate are sequentially arranged above the base, a limiting cover plate is arranged above each testing cylinder, a driving assembly and a fixing rod are arranged in each testing cylinder, and a liquid storage tank is fixed on the outer side wall of the base. By arranging the wave-shaped action grooves and the spraying channels which are alternately arranged, the driven pressing plate synchronously generates axial lifting motion during rotation so as to compress and release the disc spring body, acid mist is sprayed to the surface of the disc spring body through the spraying pipe, fatigue stress and a dynamic corrosion environment are synchronously applied in a single device, and the service life of the device is prolonged. Through cooperative use of the action gear and the adjusting assembly, when the rotating shaft is adjusted to rotate, the action gear generates a time sequence difference by using the notch to control the locking and unlocking states of the locking blocks with different heights in the fixed rod, so that sequential independent loading test of odd-numbered and even-numbered disc springs in the same disc spring group is realized.

This application provides a method, apparatus, device, and storage medium for detecting the lifespan of an in-vehicle air conditioning filter. In the method for detecting the lifespan of an in-vehicle air conditioning filter, the lifespan factor of the filter can be determined based on the air quality of the vehicle's driving environment and the circulation mode of the vehicle's air conditioning system. Based on the duration of the air conditioning fan speed being less than or equal to a specified setting, the duration of the fan speed being greater than a specified setting, the lifespan factor, and the total lifespan of the filter, the remaining lifespan of the air conditioning filter is calculated. Based on the remaining lifespan of the filter, corresponding filter maintenance reminder information is output. This implementation method can calculate the remaining lifespan of the in-vehicle air conditioning filter, eliminating the need for vehicle maintenance personnel to assess the filter's lifespan, thus saving labor costs. Furthermore, it can remind passengers to maintain the filter in a timely manner based on the remaining lifespan, preventing harm to passengers' health due to decreased filter performance.

The invention provides a SiC MOSFET DC power cycle accelerated life test system and method. The system comprises a DC power supply, a main power circuit, a conduction voltage drop measurement circuit and a controller. The main power circuit comprises N device sub-circuits which are connected in parallel, and each device sub-circuit is provided with a SiC MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor); the conduction voltage drop measuring circuit comprises N measuring sub-circuits which are respectively connected with the SiCMOSFETs of the N device sub-circuits; the measurement sub-circuit is used for measuring the conduction voltage drop of the SiC MOSFET when the connected device sub-circuit is switched on and the body diode voltage drop of the SiC MOSFET when the connected device sub-circuit is switched off in a preset cycle period; the controller is used for controlling the N device sub-circuits to be sequentially switched on within the power-on time, and only one device sub-circuit is switched on; and obtaining the body diode voltage drop sequence of the SiC MOSFET in the preset cycle period collected by each measurement sub-circuit, thereby determining the junction temperature sequence of the SiC MOSFET of each device sub-circuit. According to the invention, accelerated life tests of SiC MOSFETs under a plurality of different working conditions can be realized at the same time, and the test efficiency is improved.

This utility model discloses a comprehensive valve life testing device, belonging to the technical field of valve testing devices. The device includes a gantry frame, a base at the bottom of the gantry frame, a valve body to be tested at the top of the base, and a first half-box and a second half-box positioned opposite each other on the outside of the valve body. A fixing component is located on the top of the base, and a testing component is located on the top of the gantry frame. The fixing component includes a fixed shell fixedly connected to the top edge of the base, a first clamping unit located on the side of the fixed shell, and a second clamping unit positioned opposite each other on the outside of the fixed shell. The testing component includes a movable frame mounted on the top of the gantry frame, a sliding plate located on the top of the movable frame, a first displacement unit located between the sliding plate and the movable frame, and a commutator located on the side of the sliding plate. A second displacement unit is located between the movable frame and the gantry frame. This utility model, through its fixing and testing components, offers convenient operation and improves testing efficiency.

The invention relates to the technical field of sliding table testing, in particular to a three-axis sliding table automatic testing system and method, electronic equipment and a storage medium. The system has the advantages that the Python script is integrated with the mechanical sliding table control module, the image recognition module and the report generation module, full-closed-loop automatic testing from button pressing to result analysis is achieved, and manual operation errors are eliminated. Compared with a traditional manual method, the test efficiency is improved by more than 80%, the single test period is shortened from 8 seconds to 1.5 seconds, the method is particularly suitable for a ten thousand secondary service life test scene, the labor cost is remarkably reduced, full-process automation and test efficiency improvement are achieved, and the consistency of pressing actions is ensured by combining a dynamic G code generation technology with pressure sensor feedback; through the multi-scale SSIM algorithm and histogram equalization processing, the identification accuracy of 98% is still kept when the illumination change is + / -500 lux, the problem of misjudgment caused by ambient light interference in a traditional method is solved, and the high-precision control and environment anti-interference capability is improved.

The application discloses a semiconductor EPI process bulb life test device and a test method, and belongs to the technical field of fault prediction and health management, and comprises the following steps: collecting the resistance values of filaments in each bulb under different states through a resistance measurement module, acquiring an actual temperature change curve of the filaments, determining a nonlinear inflection point, and analyzing the aging characteristics of the filaments before and after the nonlinear inflection point; performing accelerated life test, adopting a double-voltage input cycle method to periodically load voltage on the filaments, and recording the resistance value change curves of the filaments under different voltage stress levels; and performing multidimensional test in cooperation with an execution device to simulate an actual use environment. In the technical scheme implementation process of the application, the resistance values of filaments in each bulb under different states are collected through the resistance measurement module, the temperature change curves of the filaments are acquired, then the nonlinear inflection point is determined, and the life is analyzed before and after the inflection point by using different methods, so that the current life of the bulb can be accurately acquired.

The invention relates to the technical field of motor testing, in particular to a durability testing device for a permanent magnet type stepping motor, which comprises a testing machine, a driving piece, a piece to be tested, an electrical sensor and a grounding wire, the device is characterized by further comprising an electric measurement shielding shell, an electric isolation signal transmission shaft, a fixed plate, a bidirectional cam, an electromagnetic isolation assembly, an electric measurement signal transmission connection assembly and an electromagnetic damping type current discharge assembly, wherein the electric measurement shielding shell is fixed in the testing machine; according to the invention, the electric measurement shielding housing, the electric isolation signal transmission shaft, the bidirectional cam, the electromagnetic isolation assembly, the electric measurement signal transmission connection assembly and the electromagnetic damping type current discharge assembly cooperate with each other; the problem of test result distortion caused by thermal attenuation, electrocorrosion and electromagnetic interference in the permanent magnet type stepping motor durability test in the prior art is solved, and the permanent magnet type stepping motor durability test device has the remarkable advantages of high precision, high reliability and long service life test.

This invention provides a method and system for life testing of a transmission mechanism in a vehicle reducer. The method includes: assembling the transmission mechanism under test with a braking mechanism; placing a load on a track, such that the load can be subjected to force by the braking mechanism in a braking state, wherein the load simulates a vehicle, and the load's velocity relative to the track along the track's extension direction is 0 when placed on the track; controlling the transmission mechanism under test to drive the braking mechanism to move, causing the braking mechanism to continuously switch between a braking state and a releasing state; collecting state data of the transmission mechanism under test when it drives the braking mechanism; and determining the lifespan of the transmission mechanism under test based on the state data. The method provided by this invention can relatively accurately simulate the actual working state of the transmission mechanism under test, obtain state data of the transmission mechanism under test, and, by analyzing the state data, can relatively accurately detect the lifespan of the transmission mechanism.

This utility model relates to the field of hydraulic oil testing technology for engineering machinery, specifically a hydraulic oil oxidation life testing device. The device includes a main body with an outer frame. An equipment cavity is formed inside the outer frame, and an oil tank is fixed to the bottom of the equipment cavity. In this utility model, during a circulation simulation process in a circulating pipeline, a plunger pump, in conjunction with this testing device, can simulate the operating conditions of engineering machinery equipment. Hydraulic oil oxidation durability tests are conducted under high temperature, high pressure, ventilation, and the presence of a Cu catalyst. By examining indicators such as changes in oil viscosity, increase in acid value, sludge formation, and remaining oxidation life, the device can monitor the performance change trend during oil degradation, comprehensively evaluate the oxidation durability of the hydraulic oil, predict the service life of the oil in the equipment, thereby reflecting the true lifespan of the oil, improving evaluation efficiency, and also enabling comparative experiments with multiple samples, which is more conducive to the screening of oil formulations.

The utility model discloses a lubricating grease service life testing device, which comprises a temperature control box and a grease service life testing mechanism, the grease service life testing mechanism is arranged in the temperature control box, the grease service life testing mechanism comprises a driving piece, a first gear, a second gear and a load assembly, the driving piece is in transmission connection with the first gear, and the second gear is in transmission connection with the load assembly. The first gear is meshed with the second gear, and the load assembly is installed on the second gear. Through friction meshing of the first gear and the second gear, the service state of lubricating grease in actual operation can be simulated, and accelerated aging conditions under actual working conditions can be simulated through applying a load by the load assembly, providing a preset temperature by the temperature control box and adjusting the rotating speed by the driving piece; therefore, the time required by traditional long-term whole machine testing can be greatly shortened, the evaluation efficiency can be improved, and the requirement for rapid model selection in product development can be met.

The utility model relates to the technical field of battery life testing devices, and particularly discloses an integrated lithium ion battery cycle life acceleration testing platform, which comprises an integrated cabinet, supporting plates are uniformly and fixedly arranged on the integrated cabinet, charging relay groups are uniformly and fixedly arranged on the integrated cabinet, and the charging relay groups are connected with the integrated cabinet. Discharging relay sets, a charging power source and a storage battery are evenly and fixedly installed on the integrated cabinet, an aluminum oxide ceramic battery box is fixedly installed on the supporting plate, positive columns are evenly and fixedly installed on the aluminum oxide ceramic battery box, and a battery box is fixedly installed on the aluminum oxide ceramic battery box. Cathode springs are uniformly and fixedly mounted on the aluminum oxide ceramic battery box, charging indicating lamps are uniformly and fixedly mounted on the integrated cabinet, and discharging indicating lamps are uniformly and fixedly mounted on the integrated cabinet; and the result of the conventional multiplying power test is deduced by using the high multiplying power test, so that the effect of greatly shortening the test period of the loop test is achieved.

This invention relates to the field of reliability assessment technology for electric vehicle charging equipment, specifically disclosing a method for predicting the lifespan of charging connectors by integrating accelerated life testing and field data. The method includes: constructing a laboratory lifespan dataset and a field dataset; preprocessing the two types of data and converting the laboratory degradation time into equivalent field usage time using an acceleration factor model; pre-training a priori lifespan inference model using the preprocessed laboratory data, synthetic data, and the mapped equivalent field time; inputting historical data of the target device into the priori lifespan inference model and directly outputting the lifespan prediction result; and using the lifespan prediction result for operation and maintenance decisions. This invention uses laboratory accelerated life testing as the main data source, combines a small amount of field data, and can infer lifespan status without field training. It can model the lifespan degradation of key components of charging guns under complex operating conditions, predict remaining lifespan, and assess failure risk.

This invention relates to the field of pipeline life testing, specifically to a multi-station rapid fatigue life testing device for corrugated pipe compensators. The device includes a testing base with a base plate slidably connected to it. A fixing structure is mounted on the testing base, and a testing frame is fixedly mounted on the testing base. Multiple visual sensors are mounted on the testing frame, and a hydraulic telescopic rod is mounted on the testing frame. This invention uses the fixing structure to center and fix the compensator at the bottom. When the hydraulic telescopic rod operates, and the pressing plate applies pressure to the compensator under the drive of the hydraulic telescopic rod, the pushing component drives the positioning block to extend from the rectangular groove and abut against the upper flange of the compensator in the middle, thereby achieving stable positioning of the compensator. This positioning and fixing method, using both upper and lower components, prevents displacement during testing and ensures the accuracy of the test data.

This invention belongs to the field of automotive electronics reliability testing technology, and relates to a method and apparatus for accelerated life testing of controllers based on multi-stress coupling. The method includes: selecting an on-board electronic controller sample and performing performance testing; determining the core failure mechanism and stress limit boundary; constructing a multi-stress coupling life conversion model; designing a cyclic accelerated test profile; setting the test condition parameters of the on-board electronic controller sample; conducting accelerated life testing based on the cyclic accelerated test profile; determining the failure state of the on-board electronic controller sample according to multi-level failure criteria; solving the life conversion model using the failure data corresponding to the failure state; inputting the target operating condition parameters into the solved life conversion model; and calculating the corresponding actual service life according to a preset reliability target. This invention addresses industry pain points such as low life prediction accuracy, incomplete failure identification, and high verification costs for complex on-board electronic systems like smart cockpits throughout their entire lifecycle.

The invention provides a thin-wall sandwich structure thermal and force impact test piece and a processing method thereof, and is mainly used for solving the technical problems that an existing box-shaped simulation test piece is large in heat conduction volume, a test area is not concentrated, and a temperature field of a real product cannot be well reproduced. The thin-wall sandwich structure thermal and force impact test piece can be used for screening of a thin-wall sandwich structure design scheme and strength and service life test examination verification, and has the characteristics of low cost, easiness in processing, easiness in assembly and disassembly and high safety. According to the thin-wall sandwich structure thermal and force impact test piece machining method, the center body and the input end and the output end at the two ends are separately machined, and finally the input end and the output end are welded to the two ends of the center body. A step-by-step process is adopted for the center body, and independent machining of a supporting brazing part and a test brazing part of the center body, brazing connection of the supporting brazing part and the test brazing part, profile machining, electroplating, heat treatment, boring and shape modification are sequentially completed.

This utility model discloses a roller life testing machine, including a base truss, a load applying component, a drive component, and a pressure releasing and unloading component. A lever arm is provided on the base truss. The drive component includes a drive motor A and a guide wheel. The load applying component includes a roller clamping mechanism, a pressure applying mechanism, a pressure sensor, and a mounting box. The pressure applying mechanism applies pressure to the roller clamping mechanism, allowing the roller clamped by the roller clamping mechanism to abut against the guide wheel to form a rolling friction pair. The pressure sensor is located between the roller clamping mechanism and the pressure applying mechanism. A controller is provided on the lever arm, and the pressure sensor is signal-connected to the controller. This roller life testing machine, with its specific structure, can infinitely pressurize the roller. During the pressurization process, the pressure is displayed in real time on the controller's display screen via the pressure sensor, achieving precise pressure control. Furthermore, the load pressure adjustment operation is simple and quick, and it is less likely to cause workplace injuries.

This utility model discloses a rotary joint service life testing device; belonging to the technical field of joint testing devices; its key technical features include a test chamber, the top of which is hinged with an L-shaped flip cover, and a control panel installed on the outside of the test chamber. This utility model, by setting a second clamping mechanism, uses a second motor to drive the first gear to rotate, thereby driving the outer and inner gear rings to rotate. The rotation of the inner gear ring drives multiple second gears to rotate synchronously, thereby driving multiple bidirectional lead screws to rotate synchronously. The rotation of the bidirectional lead screws causes two sliding sleeves to move relative to each other, and through the cooperation of push rods, drives the clamping plates to move towards the central axis, so that multiple sets of clamping plates move towards the central axis simultaneously, clamping the test joint. This greatly shortens the single clamping time and ensures that the axis of the test joint coincides with the rotation center, avoiding eccentric loads during high-speed rotation testing.

The utility model provides safety valve service life detection equipment, which belongs to the technical field of valve detection equipment and comprises a base and a shell at the top of the base, a pressure reducing valve connected with an external air source is arranged on one side of the shell, a through groove is formed in one side of the shell, a key bottom plate is arranged in the through groove, and a key plate is arranged on one side of the key bottom plate. A plurality of groups of flowmeters are arranged on the button plate, a plurality of groups of pressure sensors corresponding to the plurality of groups of flowmeters are arranged on the other side of the button plate, a clamp assembly used for placing a valve to be detected is arranged on the top of the base, gas pressure can be monitored in real time through the pressure sensors, and gas flow information can be synchronously measured through the flowmeters. When the safety valve fails in the service life detection process, detection personnel can obtain the failure information of the safety valve at the first time, and the problem that the traditional detection equipment cannot obtain the failure information of the safety valve at the first time due to separation of detection links is solved.

1. Name of the design product: high-accelerated life testing machine (large). 2. Use of the design product: the equipment for applying high temperature, high humidity, high pressure and other environmental conditions to electronic components, integrated circuits and other products to conduct reliability tests. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: perspective view.

This invention discloses a method for intermediate testing in a high-temperature accelerated life test of smart meters. All smart meter samples are divided into M groups, with N meters in each group. Each group is equipped with a circuit switch. The N groups of smart meter samples are connected in series with the input power supply via the circuit switch, and then connected to a load, forming a series circuit structure. The input power supply, load, and all sockets and plugs are placed outside the high-temperature test chamber. This invention performs intermediate testing every 72 hours, allowing the failure time of the samples in the high-temperature accelerated life test to be controlled within 72 hours. The longest time the tested sample is removed from the high temperature during intermediate testing is controlled to approximately 10 minutes, and the temperature decay is controlled within 3°C, keeping the impact of temperature decay on measurement accuracy within an acceptable range. The method of removing the samples from the high-temperature test chamber only requires personnel to wear ordinary cotton gloves to prevent injury from the high temperature of the samples.

The application relates to the technical field of motor testing, in particular to a durability testing device for a permanent magnet type stepping motor, which comprises a testing machine, a driving piece, a piece to be tested, an electrical sensor and a grounding wire, and is characterized in that the device further comprises an electrical measurement shielding shell, an electrical isolation signal transmission shaft, a fixing plate, a bidirectional cam, an electromagnetic isolation assembly, an electrical measurement signal transmission connecting assembly and an electromagnetic damping type current discharge assembly; the electrical measurement shielding shell is fixed in the interior of the testing machine; the device solves the problems of heat attenuation, electric corrosion and electromagnetic interference leading to distortion of testing results in the prior art durability testing of the permanent magnet type stepping motor in a cooperative mode of the electrical measurement shielding shell, the electrical isolation signal transmission shaft, the bidirectional cam, the electromagnetic isolation assembly, the electrical measurement signal transmission connecting assembly and the electromagnetic damping type current discharge assembly, and has the remarkable advantages of high precision, high reliability and long service life testing.

The utility model provides a deep groove ball bearing service life testing machine, relates to the technical field of bearing service life testing devices, and aims to solve the problems that the actual rotating speed of a deep groove bearing cannot be accurately simulated, the operation condition of the bearing at a high temperature cannot be simulated, and the influence of the high temperature on the service life of the bearing cannot be researched. Comprising a bearing bottom frame, a bearing sleeve shaft, a shielding carrying frame and a bearing support. An assembling support frame is arranged at the top of the bearing bottom frame, and a rotating shaft seat is arranged on the inner side of the assembling support frame; the bearing sleeve shaft is arranged at the top of the assembling clamping block; the shielding carrying frame is arranged at the top of the assembly supporting frame, a rotating carrying groove is formed in the side face of the shielding carrying frame, and a closed top frame is arranged on the inner side of the shielding carrying frame. The bearing support is arranged on the inner side of the mounting open groove, and an assembling sliding groove is formed in the inner side of the bearing support. The sliding supporting column supports the heating wire and is arranged on the top of the bearing sleeve shaft, the test motor cooperates with the threaded supporting shaft to drive the bearing sleeve shaft to support the bearing to rotate, and the bearing is tested through heating of the heating wire and supporting rotation of the bearing sleeve shaft.

The invention discloses cable bending fatigue life testing equipment, which comprises a mounting rack, and further comprises a test driving mechanism arranged in the mounting rack and used for driving the middle part of a cable to move; the end limiting mechanisms are mounted on the two sides of the test driving mechanism and used for limiting the two ends of the to-be-tested cable; the buffer extrusion assemblies are arranged in the mounting frame and located on the two sides of the test driving mechanism, hydraulic oil is arranged in the buffer extrusion assemblies, and movement of the test driving mechanism is buffered; the elastic pipe is communicated between the end limiting mechanism and the buffer extrusion assembly and is used for conveying hydraulic oil; according to the invention, through the arrangement of a hydraulic linkage structure of the buffer extrusion assembly and the end part limiting mechanism, the self-adaptive adjustment of the clamping force of the cable and the buffer protection of the test driving mechanism are realized.

The utility model relates to a flexible circuit board connecting part bending life detection device comprising a supporting bottom plate, a push plate is slidably arranged on one side above the supporting bottom plate, a supporting plate is fixedly arranged on the other side above the supporting bottom plate, and a first plugging groove and a second plugging groove are arranged on the surface of the upper end of the supporting plate. A sliding plate is arranged on the side, away from the first inserting groove and the second inserting groove, of the lower end of the push plate, and a mechanical recorder is arranged between the push plate and the supporting plate. According to the flexible circuit board connecting part bending life detection equipment, the push plate is manually pushed to move towards one side of the flexible circuit board and is pressed, and the flexible circuit board is bent on the surface of the supporting plate based on the flexibility of the flexible circuit board and the supporting of the surface of the supporting plate, so that the bending operation of the flexible circuit board is achieved; the pressing cambered surface has a certain radian, so that the pressing cambered surface is more attached to the palm of a person, and the pressing cambered surface is more comfortable to use.

This invention proposes a rapid cycle life testing system and method for lithium-ion batteries, relating to the field of functional testing, and more specifically to the field of electrical performance testing. The system includes: multiple analysis mechanisms for acquiring various radio electromagnetic test data, correlation parameters, and the average cycle life and previous batch intervals of lithium-ion batteries from each historical production batch; and a cycle life assessment mechanism for intelligently assessing the cycle life of the current lithium-ion battery based on the analysis results from the multiple analysis mechanisms using an intelligent cycle life assessment model. This invention addresses the technical problem of the difficulty in rapidly and accurately testing the cycle life of massive quantities of lithium-ion batteries one by one. By introducing a customized intelligent cycle life assessment model and comprehensively selecting multiple fundamental information sources, an intelligent cycle life numerical analysis mechanism is constructed, thereby solving the aforementioned technical problem.

The invention discloses a portable high-reliability valve action life testing machine, and belongs to the technical field of automatic testing equipment. The testing machine comprises a switching power supply, a PLC all-in-one machine, an input module, an output module and a solid-state relay. The input module is connected between a power supply positive electrode and a PLC input point through an input switch, and a PLC input common end is connected with a power supply negative electrode to form a source type input circuit; the PLC output common end of the output module is connected with the negative electrode of the power supply to form a drain type output circuit; the control side of the solid-state relay is connected among the power supply anode, the PLC output point and the cathode, and the load side is connected in series between the power supply anode and the tested valve coil. The solid-state relay is used for replacing a traditional electromechanical relay, PLC control is combined, and the technical problems that in the prior art, a control system is short in service life, poor in reliability, low in control precision, large in electromagnetic interference and inconvenient to adjust parameters are solved.

The invention provides a rapid detection system and method for the cycle life of a lithium ion battery, and relates to the field of function testing, in particular to the field of electrical performance testing. The system comprises a plurality of analysis mechanisms which are used for respectively acquiring a plurality of wireless electromagnetic test data and associated parameters of a current lithium ion battery, the average cycle life times of the lithium ion battery of each historical production batch and the interval duration of a previous batch; and the service life identification mechanism is used for intelligently identifying the cycle life times of the current lithium ion battery according to the analysis results of the plurality of analysis mechanisms by adopting an intelligent cycle life identification model. In order to solve the technical problem that the requirement for one-by-one rapid and accurate detection of the cycle life of massive lithium ion batteries in batches is difficult to meet, an intelligent cycle life numerical value analysis mechanism is constructed by introducing a cycle life intelligent identification model designed in a customized structure and multiple items of basic information fully and comprehensively selected; therefore, the technical problem is solved.

The utility model discloses a spring fatigue testing arrangement, including spring life testing machine, spring life testing machine includes base, fixed frame, movable frame, outer tube and inner tube, the fixed frame is fixed at base top one end, and movable frame swing connection is in base top, and is located fixed frame side, outer tube and inner tube share four groups, and two groups are fixed respectively on fixed frame and movable frame, limiting component, limiting component includes first aperture, second aperture, T type plug -in block and arc -shaped groove, first aperture is set up in outer tube upper end, and second aperture is set up in inner tube upper end, and second aperture is located first aperture directly below, and T type plug -in block is inserted in first aperture and second aperture, and arc -shaped groove sets up in T type plug -in block lower extreme. The utility model discloses through being provided with limiting component, in addition to locking screw, the T type plug -in block is additionally added to the both ends of spring, to play the limiting effect, and the both ends of spring are increased the connection intensity.