15results about How to "Save test resources" patented technology

The invention relates to the technical field of transistor detection, in particular to a quick test method and system for an MOSFET device. The method comprises the following steps: acquiring and integrating multi-source parallel data of the MOSFET device to obtain real-time I-V characteristic data of the device; performing MOSFET device performance prediction based on the real-time device I-V characteristic data to obtain MOSFET device performance prediction data; screening according to the performance prediction data of the MOSFET device to obtain performance data of a primarily screened qualified device; performing adjustment based on the performance data of the preliminarily screened qualified device to obtain an MOSFET device test scheme; acquiring real-time test data of the MOSFET device, and screening qualified devices to obtain performance data of re-screened qualified devices; and performing device test summarization based on the performance data of the primarily screened qualified device and the performance data of the secondarily screened qualified device to obtain an MOSFET device test report. According to the invention, the test period can be shortened.

The invention discloses a DRAM (Dynamic Random Access Memory) repair method, test equipment, a storage medium and a computer program product, relates to the technical field of memory repair, and discloses the DRAM repair method, which can find and locate potential fault points in the DRAM in real time by dynamically acquiring an error unit address of the DRAM to provide an accurate target for subsequent repair work. And judging whether the error unit is really damaged or not by performing a repeated read-write test on the error unit. According to the invention, when the number of errors reported by the error unit reaches the preset number of times, it is judged that the error unit is damaged, misjudgment caused by a single test error is avoided, meanwhile, invalid or excessive tests on the damaged unit are prevented, and the test time and resources are saved. And finally, through a remapping technology, the service life of the chip is prolonged, the system shutdown risk caused by chip faults is reduced, and the stability of the DRAM is improved.

The invention provides a server testing system and method, electronic equipment and a computer readable storage medium, the server testing system comprises the electronic equipment, the electronic equipment is provided with a USB port, and the electronic equipment is in communication connection with a server through the USB port; the touch display screen is used for displaying a test item menu bar; the electronic equipment comprises an interaction module which responds to a selection operation of a user on a test item menu bar through a touch display screen so as to generate configuration parameters for a server; the configuration module is used for modifying a pre-stored test script according to the configuration parameters to obtain a modified test script; the sending module is used for sending the modified test script to the server through the USB port; and the test module is used for controlling the server to execute the modified test script and generate a test result. According to the method, the test process is packaged into the test script in advance, and one or more tests can be automatically executed by connecting the USB port of the electronic equipment with the server, so that the server test automation is realized.

The invention relates to a system testing method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: in the process of executing each test case of the distributed system, obtaining a call tree and a coverage rate of the test case, obtaining a case weight corresponding to the test case according to the coverage rate, clustering all the test cases according to the call tree to obtain multiple groups of clusters, and sending the multiple groups of clusters to the distributed system; and determining a test priority corresponding to each test case under each group of clusters according to the case weight, and carrying out regression testing on the distributed system based on the test priorities. By adopting the method, the distributed system can be tested more comprehensively and specifically, and the test time and resources are saved, so that the stability and reliability of the system are ensured.

This application provides a method, apparatus, electronic device, and storage medium for predicting battery heat generation power. It acquires multiple first average heat generation powers of the battery when charged and discharged at different rates at a target temperature, and multiple second average heat generation powers of the battery when charged and discharged at the target rate at different temperatures. The target temperature includes the middle temperature of the battery's operating temperature range, and the target rate includes the rate at the middle position of the battery's rate range and the rate at the beginning and / or end positions. The multiple first average heat generation powers and multiple second average heat generation powers are fitted to obtain a relationship between the heat generation power of the battery when charged and discharged at different rates at different temperatures. Based on the obtained heat generation power relationship, the heat generation power of the battery when charged and discharged at any rate at any temperature is determined. This application can save testing time and resources while ensuring prediction accuracy.

The invention discloses a lithium ion battery OCV-DCR cross test method. The method comprises the following steps: S1, carrying out capacity calibration on a to-be-tested lithium ion battery; s2, carrying out a discharge OCV and DCR cross test; s3, charging OCV and DCR cross test is carried out; and S4, data processing is carried out, and DCR calculation of all temperatures and SOC points is completed through calculation. According to the OCV-DCR cross test method for the lithium ion battery, on the basis that the test time is not increased, the charge and discharge OCV and the charge and discharge DCR of the battery can be tested at the same time, and test resources are saved.

The application discloses a power battery alternating current charging time calculation method and device, medium and electronic equipment, and belongs to the technical field of batteries. The power battery alternating current charging time calculation method comprises the following steps: acquiring an alternating current charging voltage change curve of a battery cell in a power battery; determining the charging power of the power battery according to the power of a high-voltage accessory and a low-voltage accessory assembly in a vehicle provided with the power battery; determining the relationship between the charging current and the charging time of the power battery according to the alternating current charging voltage change curve of the battery cell and the charging power; and determining the alternating current charging time of the power battery according to the target SOC change amount of the power battery and the relationship between the charging current and the charging time. The embodiment of the application can realize quantitative measurement of the alternating current charging time of the power battery in the whole available SOC range.

The present invention provides a method, device and electronic device for obtaining modeling parameters of a lithium-ion battery energy storage system, wherein the method includes: obtaining the pulse voltage response of the lithium-ion battery energy storage system under different charge states; obtaining the initial value of the constructed equivalent circuit parameter according to the pulse voltage response under each charge state; obtaining the operating voltage response curve of the lithium-ion battery energy storage system; dividing the operating voltage response curve into segments with each charge state as a dividing point; assigning the corresponding initial value to the equivalent circuit for each actual use condition, using the operating voltage response curve of the actual use condition as a target curve for parameter identification and optimization, and obtaining the equivalent circuit parameters that meet the actual use condition. The present invention can save test resources, only requires less measured data to complete the parameter acquisition of the actual use condition, reduce development costs, and also improve the simulation accuracy of the energy storage system, and obtain equivalent circuit parameters that match different actual use conditions.

The invention discloses a performance inflection point determination method and device, a medium and a program product, and belongs to the technical field of big data, the field of financial science and technology and the field of software test.The method comprises the steps that on the basis of a target value interval of a target test parameter, an inflection point search interval is determined through a dichotomy; determining a detection step length, and determining candidate performance inflection points from the inflection point search interval according to the detection step length; and under the constructed system simulation environment, performing accuracy verification on the candidate performance inflection points, and determining the candidate performance inflection points as target performance inflection points under the condition that the verification is passed. According to the invention, the determination efficiency and accuracy of the target performance inflection point are improved.

The invention discloses a hierarchical test method of a three-dimensional stacked memory, which relates to the technical field of memory testing, and comprises the following steps of: performing initialization operation on each storage layer of the three-dimensional stacked memory, and formulating a hierarchical test mode of the current three-dimensional stacked memory according to the structure type of the storage layer; testing each storage layer of the three-dimensional stacked memory, marking a certain storage layer as a to-be-checked storage layer if the storage abnormity of the certain storage layer is detected, recording the storage position and the storage type of the storage layer, carrying out a global test on the to-be-checked storage layer, and ending the test if the storage abnormity is not detected in all the storage layers; and according to a test result of the global test, all abnormal storage boundaries of corresponding storage layers of the three-dimensional stacked memory are positioned, diagnosis and repair are carried out, and then the abnormal storage boundaries are converted into normal storage boundaries.

The invention discloses a test system and a test method for confirming the gunpowder amount of an active front cover jacking exploder, the test system comprises a rack, a front cover module and a jacking device, the front cover module is arranged on the rack through a hinge; the jacking device comprises a sleeve and a jacking rod, an opening is formed in the upper end of the sleeve, the first end of the jacking rod extends out of the opening, the second end of the jacking rod extends into the sleeve, a driving mechanism is arranged between the jacking rod and the bottom wall of the sleeve, and the second end of the jacking rod is connected to the output end of the driving mechanism; the ejector rod is located below the front cover module, and the position, facing the front cover module, of the first end of the ejector rod is consistent with the position, facing the automobile front cover, of the jacking exploder. The device has the advantages that the front cover module is jacked up through the jacking rod to simulate the movement process that the jacking exploder jacks up the automobile front cover, and the gunpowder dosage equivalent to the kinetic energy equivalent E of the jacking rod can be calculated through the kinetic energy equivalent E of the jacking rod when the jacking rod makes contact with the front cover module.

This invention provides an IGBT testing line, comprising a testing machine and a first side thereof, sequentially arranged from one end to the other, a loading and unloading mechanism, a front multi-functional testing area, a preheating plate, and a front testing module. The first side of the testing machine also sequentially arranges a rear testing module, a rear multi-functional testing area, and a multi-layer material distribution mechanism, with the rear testing module symmetrically arranged to the front, rear, and front multi-functional testing areas. A fast passage is provided between the front and rear multi-functional testing areas. The second side of the testing machine sequentially arranges a cooling plate and an arch testing module. Material transport or skip-station testing on the entire line is completed by a handling arm. The IGBT testing line of this invention requires only software operation and can quickly achieve skip-station testing without requiring personnel to modify the equipment, and does not affect production efficiency.

The present invention belongs to the technical field of automobile environmental testing, and in particular, relates to a safety control system and method for automobile environmental wind tunnel rainfall test, wherein the automobile environmental wind tunnel comprises an environmental adjustment module and a wind tunnel operating system, wherein the environmental adjustment module communicates with the wind tunnel operating system, and the wind tunnel operating system controls the running state of the environmental adjustment module; the safety control system comprises a monitoring module, an alarm module and a safety control module; the wind tunnel operating system is connected in communication with the safety control module; the monitoring module and the alarm module are connected in communication with the safety control module, the safety control module receives the monitoring signal of the monitoring module, and analyzes the monitoring signal according to a preset safety risk monitoring model to generate a risk result, and the safety control module is also used to control the wind tunnel operating system according to the risk result to adjust the running state of the environmental adjustment module; the safety control module is also used to control the running state of the alarm module according to the risk result. The present invention can solve the problem that the existing environmental wind tunnel A-pillar overflow test and wheel water throwing test lack safety assurance.

The present invention discloses a method for rapidly and synchronously testing the maximum pulse current, peak power and DC internal resistance of a battery, comprising: a first step of calibrating the capacity of the battery for a preset number of times; a second step of discharging the battery that has passed the capacity calibration in the first step and has been fully charged until the battery SOC is equal to a pre-specified state of charge; a third step of discharging the battery at the pre-specified state of charge C TC In the fourth step, the initial voltage V0 of the battery is recorded, and the battery is discharged or charged in turn with multiple operating currents I, and the battery voltage value V is tested and recorded; the fourth step is to obtain the quantitative relationship between the operating current I and the battery voltage value V; the fifth step is to obtain the maximum pulse current value I of the battery under the pre-specified charge state max ; Step 6: Calculate the battery peak power P max The invention can efficiently, conveniently and reliably measure the maximum pulse current, peak power and DC internal resistance of the battery.

The invention provides a screening method of a lithium primary battery electrolyte. The method comprises the following steps: putting three electrodes into an electrolyte to be detected, and carrying out n-circle scanning by using cyclic voltammetry; the current of the first circle is defined as I1, and the current of the nth circle is defined as In; if I1 is larger than or equal to In, it is judged that an SEI film formed by the to-be-detected electrolyte is stable; and if I1 is less than In, judging that the SEI film formed by the electrolyte to be detected is unstable. According to the method, the stability of the SEI film formed by the electrolyte and the lithium metal is judged by utilizing the cyclic voltammetry, so that the stability of the battery electrolyte is judged, and the electrolyte capable of stabilizing in the lithium primary battery is screened out; according to the electrochemical testing method, the stability of the electrolyte can be judged in advance, the stable electrolyte is screened out in advance for testing the full performance of the battery cell, and production and testing resources can be greatly saved.