Method and device for testing reliability of solid state disk

Abstract

The invention discloses a method and a device for testing reliability of a solid state disk. The testing method comprises the steps of S1, multi-factor coupling environment cycle testing and S2, performance detection after testing. The method comprises the following steps: S1, carrying out a multi-factor coupling environment cycle test by taking salt mist infiltration, temperature and humidity cycle and power-on work test which are sequentially carried out as a cycle; in the testing process, a sensing system is adopted to detect environmental data, and an image acquisition system is adopted to acquire images of the solid state disk; s2, judging hidden defects and electrical performance changes of the solid state disk, and evaluating the hidden defects and the electrical performance changes; dissecting the detected solid state disk; chemical element components in the corrosion area are analyzed to confirm corrosion products and trace corrosion paths; and observing the dissected section to judge the corrosion depth of the solid state disk. According to the testing method, the reliability of the solid state disk can be truly and accurately detected, and the salt spray corrosion resistance of the sample can be analyzed in multiple dimensions.

Description

Technical Field

[0001] This invention relates to the field of semiconductor manufacturing technology, and in particular to a reliability testing method and testing apparatus for solid-state drives. Background Technology

[0002] Solid-state drives (SSDs), as core data storage components, are widely used in consumer electronics, industrial control, automotive electronics, and data centers. To ensure the mechanical reliability and environmental adaptability of SSDs, salt spray testing has become an important reliability verification method. Existing salt spray testing methods place samples in a constant-temperature, constant-humidity environment and spray a fixed concentration of salt solution to simulate long-term salt spray exposure. After the test, the corrosion resistance of the SSD can be evaluated by cleaning and visual inspection of the sample. While existing salt spray testing methods provide a basic and unified evaluation standard for assessing the protective performance of electronic product casings and surface coatings, the operating environments of today's SSDs are becoming increasingly complex and diverse, especially in harsh environments such as coastal areas, offshore areas, or industrial zones, where devices are exposed to high-temperature, high-humidity, and salt-rich air for extended periods. Chloride ions in salt spray in application scenarios are highly corrosive and can penetrate the tiny gaps in the device casing, causing electrochemical corrosion to the internal integrated circuits, component solder joints, interface connectors, and metal lines on the PCB board of the SSD. This can lead to performance degradation, functional failure, or even data loss, seriously threatening the reliability and security of the storage system.

[0003] However, existing salt spray testing methods have several drawbacks: the simulated environment is too limited and mismatched with real-world scenarios, failing to simulate actual usage conditions and thus unable to expose potential product failure risks under real-world conditions; post-test visual inspection can only detect macroscopic surface corrosion, unable to detect hidden corrosion inside the SSD package, on the PCB bottom layer, or at BGA solder joints. Therefore, providing a reliability testing method that can realistically and accurately test the reliability of solid-state drives and analyze the salt spray corrosion resistance of samples from multiple dimensions is an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems and provide a reliability testing method and testing device for solid-state drives. The reliability testing method can accurately and realistically detect the reliability of solid-state drives and can analyze the salt spray corrosion resistance of samples from multiple dimensions.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a reliability testing method for a solid-state drive, comprising the following steps: S1, Multi-factor coupled environment cyclic test: The solid-state drive is placed in a reliability test chamber, and a multi-factor coupled environment cyclic test is performed in a cycle consisting of salt spray immersion, temperature and humidity cycling, and power-on operation test. During the multi-factor coupled environment cyclic test, a sensing system is used to detect the environmental data in the reliability test chamber, and an image acquisition system is used to acquire images of the solid-state drive. S2, Post-test Performance Detection; includes the following steps: Post-processing is performed on the solid-state drive after the test in step S1; X-ray imaging was used to inspect the post-processed solid-state drives (SSDs) to determine whether there were hidden defects inside the SSD packaging; the electrical performance of the SSDs was retested, and the initial electrical performance data before the test was used as a comparison object to evaluate the electrical performance of the SSDs. The solid-state drive (SSD) after step S1 is dissected; the chemical elemental composition of the corroded area is analyzed to identify corrosion products and trace the corrosion path; the dissected cross-section is observed to determine the depth of corrosion of the SSD.

[0006] Optionally, in step S1, the salt spray immersion includes step S11: spraying sodium chloride solution into the reliability test chamber in an intermittent manner at a first temperature and a first relative humidity, with the spraying lasting for a first time.

[0007] Optionally, in step S1, the temperature and humidity cycle includes: Step S12: Reduce the temperature inside the reliability test chamber from the first temperature to the second temperature, and reduce the relative humidity from the first relative humidity to the second relative humidity, and then keep it at the second temperature and the second relative humidity for a second time; Step S13: Lower the temperature inside the reliability test chamber from the second temperature to the third temperature, and increase the relative humidity from the second relative humidity to the third relative humidity; maintain the temperature at the third temperature and the third relative humidity for a third time. Steps S12 and S13 are performed repeatedly in a loop, and the number of repetitions is at least 2.

[0008] Optionally, in step S1, the power-on operation test includes step S14: during the process of heat preservation for a third time at the third temperature and the third relative humidity in step S13, the solid-state drive is powered on through the load board and a simulated load is run; and the performance parameters of the solid-state drive are detected in real time.

[0009] Optionally, in step S1, the number of cycles of salt spray immersion, temperature and humidity cycling, and power-on operation test is 2-5.

[0010] Optionally, before step S1, step S0, preprocessing and initial baseline establishment, is also included; including the following steps: S01, Sample Preprocessing and Initial Performance Calibration: The solid-state drive under test was left to stand for 24 hours under standard atmospheric conditions to stabilize its state; subsequently, a standardized read / write load was run on the performance test platform using the FIO tool, with 70% random read / 30% random write and a queue depth of 32 to simulate a typical data center load, and baseline performance data, including IOPS, read / write latency, UECC count, total number of bad blocks, and all SMART attribute values, was continuously recorded for at least 30 minutes; the obtained data served as the benchmark for performance degradation analysis. S02, Initial Appearance and Structure Recording: The initial state of the solid-state drive was photographed from all angles using a high-resolution microscope; the internal structure was imaged to obtain an initial internal structure baseline image.

[0011] Secondly, the present invention provides a reliability testing apparatus for a solid-state drive (SSD), the apparatus being used in the SSD reliability testing method described above; the apparatus includes: A salt spraying system is used to perform salt spray immersion operations based on preset salt spraying conditions; A temperature control system is used to perform temperature control operations based on preset temperature conditions. A humidity control system is used to perform humidity control operations based on preset humidity conditions. Power-on load board, used to power the solid-state drive; Sensing systems are used to detect environmental data; An image acquisition system is used to acquire images from solid-state drives.

[0012] Optionally, the device includes a reliability test chamber, in which the salt spray system, temperature control system, humidity control system, sensing system, and image acquisition system are integrated.

[0013] Optionally, the power-on load board is externally mounted on the reliability test chamber; the power-on load board is connected to the solid-state drive via a connecting cable; the reliability test chamber has a through hole for the connecting cable to pass through, and a flexible sealing ring is provided on the through hole along its axial direction; the reliability test chamber is equipped with a movable docking mechanism for connecting the connecting cable to the solid-state drive.

[0014] Optionally, the moving docking mechanism includes a driving component and a fixing member disposed at the driving end of the driving component, and the end of the connecting line near the solid-state drive is disposed on the fixing member.

[0015] The beneficial effects of this invention include at least the following: The solid-state drive (SSD) reliability testing method of this invention performs salt spray testing on the SSD in a multi-factor coupled testing environment, simulating a complex natural environment and improving the realism and reliability of the SSD reliability test. A sensing system is used to test environmental data, enabling real-time monitoring and adjustment of environmental parameters during the reliability test, thereby ensuring the accuracy of the SSD reliability test. After the multi-factor coupled environment cyclic test, a non-destructive testing method is first used to inspect the internal structure of the SSD to observe whether corrosion has caused cracks, voids, or foreign matter formation in the package (such as chips, capacitors, solder joints, and bonding wires), providing a preliminary detection of hidden defects in the SSD. Then, the SSD is dissected for sample preparation, and the chemical element composition of the corroded areas is analyzed to identify corrosion products. The morphology of the cross-section of the corroded area is observed to determine the depth of corrosion. This invention employs a combination of macroscopic morphology observation and microscopic detection to perform multi-dimensional observation and analysis of the structure of solid-state drives (SSDs) corroded under the aforementioned multi-factor coupled testing environment. This method not only determines whether a product has failed but also accurately locates the failure point, analyzes the composition of corrosion products, and traces the failure mechanism. Furthermore, this invention combines non-destructive analysis and destructive physical analysis to form a systematic corrosion assessment mechanism that can accurately locate the cause and location of corrosion, providing comprehensive technical support for product quality improvement and design enhancement. Attached Figure Description

[0016] Figure 1 This is a process flow diagram of the reliability testing method for solid-state drives according to the present invention. Detailed Implementation

[0017] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0018] To facilitate understanding of the present invention, preferred embodiments are provided below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0019] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0020] In this invention, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0021] In a first aspect, embodiments of the present invention provide a reliability testing method for solid-state drives (SSDs), specifically applicable to salt spray testing of SSDs under complex environments; see also Figure 1 As shown, it includes the following steps: S1, Multi-factor coupled environment cyclic test: The solid-state drive is placed in a reliability test chamber, and a multi-factor coupled environment cyclic test is performed in a cycle consisting of salt spray immersion, temperature and humidity cycling, and power-on operation test. During the multi-factor coupled environment cyclic test, a sensing system is used to detect the environmental data in the reliability test chamber, and an image acquisition system is used to acquire images of the solid-state drive. S2, Post-test Performance Detection; includes the following steps: The solid-state drive after the test in step S1 undergoes post-processing; the post-processing includes cleaning and drying. X-ray imaging was used to inspect the post-processed solid-state drives (SSDs) to determine whether there were hidden defects inside the SSD packaging; the electrical performance of the SSDs was retested, and the initial electrical performance data before the test was used as a comparison object to evaluate the electrical performance of the SSDs. The solid-state drive (SSD) after step S1 is dissected; the chemical elemental composition of the corroded area is analyzed to identify corrosion products and trace the corrosion path; the dissected cross-section is observed to determine the depth of corrosion of the SSD.

[0022] The solid-state drive (SSD) reliability testing method of this invention performs salt spray testing on the SSD in a multi-factor coupled testing environment, simulating a complex natural environment and improving the realism and reliability of the SSD reliability test. A sensing system is used to test environmental data, enabling real-time monitoring and adjustment of environmental parameters during the reliability test, thereby ensuring the accuracy of the SSD reliability test. After the multi-factor coupled environment cyclic test, a non-destructive testing method is first used to inspect the internal structure of the SSD to observe whether corrosion has caused cracks, voids, or foreign matter formation in the package (such as chips, capacitors, solder joints, and bonding wires), providing a preliminary detection of hidden defects in the SSD. Then, the SSD is dissected for sample preparation, and the chemical element composition of the corroded areas is analyzed to identify corrosion products. The morphology of the cross-section of the corroded area is observed to determine the depth of corrosion. This invention employs a combination of macroscopic morphology observation and microscopic detection to perform multi-dimensional observation and analysis of the structure of solid-state drives (SSDs) corroded under the aforementioned multi-factor coupled testing environment. This method not only determines whether a product has failed but also accurately locates the failure point, analyzes the composition of corrosion products, and traces the failure mechanism. Furthermore, this invention combines non-destructive analysis and destructive physical analysis to form a systematic corrosion assessment mechanism that can accurately locate the cause and location of corrosion, providing comprehensive technical support for product quality improvement and design enhancement.

[0023] In step S1, the salt spray immersion includes step S11: spraying sodium chloride solution intermittently into the reliability test chamber at a first temperature and a first relative humidity, with the spraying lasting for a first time. During the salt spray immersion process, the intermittent spraying of the sodium chloride solution avoids excessive accumulation of droplets forming a liquid film due to continuous spraying, ensuring that the salt spray atmosphere closely resembles the actual operating environment of the solid-state drive, thereby guaranteeing the authenticity and reliability of the reliability test. Optionally, during the salt spray immersion, the first temperature is 35±1℃, the first relative humidity is >95%, and the first time is 8 hours. The concentration of the sodium chloride solution, by mass percentage, is 5.0%±0.05%, and the pH value is 6.8-7.0.

[0024] In step S1, the temperature and humidity cycle includes: Step S12: The temperature inside the reliability test chamber is reduced from the first temperature to the second temperature, and the relative humidity is reduced from the first relative humidity to the second relative humidity. Then, the chamber is kept at the second temperature and the second relative humidity for a second time. Optionally, the second temperature is 65°C, the second relative humidity is 30%Rh, and the second time is 2 hours. The first temperature is increased to the second temperature at a rate of 1°C / minute.

[0025] Step S13: Lower the temperature inside the reliability test chamber from the second temperature to the third temperature, and raise the relative humidity from the second relative humidity to the third relative humidity; maintain the temperature at the third temperature and the third relative humidity for a third time; optionally, the third temperature is 25°C, the third humidity is 95%, and the third time is 2 hours.

[0026] Steps S12 and S13 are performed repeatedly in a loop, and the number of repetitions is at least 2.

[0027] In step S1, the power-on operation test includes step S14: during the heat preservation process at the third temperature and the third relative humidity for the third time in step S13, the solid-state drive is powered on and a simulated load is run through the load board; and the performance parameters of the solid-state drive are monitored in real time. By powering on and running a simulated load during the high humidity stage and monitoring its performance parameters in real time, this method can effectively detect progressive performance degradation and functional failures caused by changes in conduction resistance due to electrochemical migration and corrosion. This achieves a leap from "post-event static inspection" to "process dynamic monitoring," enabling precise location of the time point and triggering conditions of the failure. The performance parameters of the solid-state drive include IOPS (read / write speed), Latency, ECC (error correction code) error rate / increase number, BadBlock increase number, SMART (Self-Monitoring Analysis Reporting Technology), etc.

[0028] In step S1, the salt spray immersion, temperature and humidity cycling, and power-on operation tests are performed 2-5 times. Specifically, the cycle coefficient can be set according to the reliability level requirements of the solid-state drive; for example, the number of cycles can be 2, 3, 4, or 5. The total duration is 96-240 hours. This method can stimulate and expose failure modes that may only appear after long-term use within a relatively short test cycle, making it a highly efficient accelerated life test. It avoids the waste of resources caused by simply extending the test time, achieves the goal of obtaining maximum reliability information within a limited time, and significantly shortens the product development and verification cycle.

[0029] The sensing system can detect environmental data including temperature and humidity within the reliability test chamber, as well as the pH value and conductivity of the sodium chloride solution. The sensing system records the environmental data within the reliability test chamber in real time, facilitating timely adjustments to ensure the environmental data remains within preset conditions. The image acquisition system includes a camera embedded within the reliability test chamber. This camera captures and records images of the solid-state drive's appearance, label detachment, and interface corrosion, enabling real-time recording of the solid-state drive's macroscopic evolution during testing.

[0030] In step S2, the chemical elemental composition of the corroded area is analyzed using scanning electron microscopy and energy-dispersive X-ray spectroscopy; the dissected cross-section is observed using a microscope.

[0031] Before step S1, there is also step S0, preprocessing and initial baseline establishment; including the following steps: S01, Sample Preprocessing and Initial Performance Calibration: The solid-state drive under test was left to stand for 24 hours under standard atmospheric conditions to stabilize its state; subsequently, a standardized read / write load was run on the performance test platform using the FIO tool, with 70% random read / 30% random write and a queue depth of 32 to simulate a typical data center load, and baseline performance data, including IOPS, read / write latency, UECC count, total number of bad blocks, and all SMART attribute values, was continuously recorded for at least 30 minutes; the obtained data served as the benchmark for performance degradation analysis. S02, Initial Appearance and Structure Recording: A high-resolution microscope is used to take comprehensive photographs of the solid-state drive (SSD) in its initial state; the internal structure is imaged to obtain an initial baseline image of the internal structure. Specifically, a high-resolution microscope is used to take comprehensive photographs of the SSD's casing, interfaces, PCB board, and key components for archiving. Non-destructive X-ray imaging is also performed on peripheral key components such as BGA solder joints and power management chips to obtain an initial baseline image of the internal structure.

[0032] In step S2, the cleaning process includes the following steps: S21. Pre-cleaning: Wipe the surface of the solid-state drive (SSD) with a dry, soft microfiber cloth or soft brush to remove large particles adhering to the SSD; and / or, use high-pressure, clean purge gas to purge the interfaces and other gaps of the SSD to remove large particles of impurities from the interfaces and gaps. The purge gas includes dry air or nitrogen, and the pressure of the purge gas is 0.2-0.3 MPa.

[0033] S22. Fine cleaning; including the steps of: using deionized water to perform a second cleaning on the solid-state drive after the pre-cleaning treatment in step S21; and / or, performing ultrasonic cleaning on the solid-state drive after the second cleaning.

[0034] Optionally, heated deionized water can be used to perform a secondary cleaning of the solid-state drive.

[0035] The ultrasonic cleaning is used to deeply clean the solid-state drive (SSD) when stubborn salt crystals remain after the secondary cleaning. Optionally, the ultrasonic cleaning uses a low-frequency ultrasonic cleaning device to ultrasonically treat the SSD to prevent damage to the solder joints or internal bonding wires. In some embodiments, the frequency of the low-frequency ultrasonic cleaning device is 40±5kHz. A short-pulse cyclic operation is used, with each pulse lasting 10 seconds, followed by a 30-second interval, repeated 2-3 times.

[0036] In step S2, the drying process includes the step of subjecting the cleaned solid-state drive to a temperature of 50℃±5℃. This temperature is far below the temperature tolerance limit of most electronic components and effectively promotes moisture evaporation.

[0037] Secondly, embodiments of the present invention provide a reliability testing apparatus for a solid-state drive (SSD), the apparatus being used in the aforementioned SSD reliability testing method; the apparatus includes: A salt spraying system is used to perform salt spray immersion operations based on preset salt spraying conditions; A temperature control system is used to perform temperature control operations based on preset temperature conditions. A humidity control system is used to perform humidity control operations based on preset humidity conditions. Power-on load board, used to power the solid-state drive; Sensing systems are used to detect environmental data; An image acquisition system is used to acquire images from solid-state drives.

[0038] The device includes a reliability testing chamber, within which the salt spray system, temperature control system, humidity control system, sensing system, and image acquisition system are integrated. This invention employs a composite reliability testing device capable of simulating natural environments, integrating multiple environmental simulation systems such as a salt spray system, a high and low temperature control system, and a humidity control system. It can precisely control multiple environmental parameters such as temperature, humidity, salt concentration, and pH value, comprehensively simulating the usage conditions of solid-state drives in a marine environment, overcoming the limitations of traditional single-condition testing. This invention achieves real-time monitoring of the testing environment through a built-in image acquisition system and sensing system, enabling timely capture of changes in the sample's appearance and performance data, and realizing dynamic analysis and monitoring of the corrosion process, thus solving the problem of lacking real-time monitoring capabilities in existing technologies.

[0039] The power-on load board is externally mounted on the reliability test chamber. The power-on load board is connected to the solid-state drive (SSD) via a connecting cable. The reliability test chamber has a through-hole for the connecting cable to pass through, and a flexible sealing ring is provided along its axial direction on the through-hole. A movable docking mechanism is provided inside the reliability test chamber to connect the connecting cable to the SSD. This reliability test device of the present invention externally mounts the power-on load board for powering the SSD within the reliability test chamber, extending only the connecting cable into the chamber. This avoids the power-on load board and the SSD being subjected to salt spray corrosion together within the reliability test chamber, protecting the power-on load board, reducing its wear, preventing corrosion failure of the load board itself from affecting the reliability of the SSD test, ensuring the long-term stability and reliability of the power-on load board, and reducing the cost of SSD reliability testing. The flexible sealing ring ensures the airtightness of the reliability test chamber, preventing the impact on the test environment inside the chamber and further ensuring the reliability of the SSD reliability test. It is understood that, in order to improve the corrosion resistance and operational stability of the connecting cable, a flexible, high and low temperature resistant, and corrosion-resistant connecting cable is selected; for example, in some embodiments, a silicone-sheathed shielded cable is selected. The end of the connecting cable that interfaces with the solid-state drive is coated with an anti-corrosion layer, and the portion of the connecting cable extending at least into the reliability test chamber is coated with conformal coating or covered with a corrosion-resistant protective layer.

[0040] The movable docking mechanism includes a driving component and a fixing member disposed at the driving end of the driving component. The end of the connecting cable near the solid-state drive (SSD) is disposed on the fixing member. In use, the driving component drives the fixing member to move, thereby causing the end of the connecting cable near the SSD to move closer to or away from the SSD. The movable docking mechanism enables automatic connection between the connecting cable and the SSD without manual operation, avoiding disturbance or interference to the testing atmosphere within the reliability testing chamber caused by manual operation, and improving testing efficiency. Optionally, in some embodiments, the driving component is a lead screw module or a synchronous belt module.

[0041] The reliability test chamber is equipped with a positioning fixture for securing the solid-state drive (SSD). The positioning fixture includes the SSD body and a guide member located in the area corresponding to the interface between the body and the SSD. The guide member guides the connector of the connecting cable, improving the connection efficiency between the connector and the SSD. In use, the SSD is fixed to the positioning fixture with its interface end facing the connection end of the connecting cable. The positioning fixture positions the SSD, preventing positional shift during connection with the connecting cable, thus improving the connection efficiency between the cable and the SSD and enhancing testing efficiency.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above embodiments merely illustrate preferred implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A method for testing reliability of a solid state drive, the method comprising: The method comprises the steps of: ​ S1, multi-factor coupling environment cycle test: placing the solid state disk in a reliability test box to sequentially perform salt spray immersion, temperature and humidity cycle, and power-on working test as a cycle to perform multi-factor coupling environment cycle test; in the multi-factor coupling environment cycle test process, an sensing system is used to detect the environmental data in the reliability test box, and an image acquisition system is used to acquire the image of the solid state disk; S2, performance detection after test; The method comprises the steps of: post-processing the solid state disk after the test in step S1; X-ray imaging is used to detect the solid state disk after the post-processing to determine whether there is hidden defect in the package of the solid state disk; the electrical performance of the solid state disk is retested, and the initial electrical performance data before the test is used as the comparison object to evaluate the electrical performance of the solid state disk; the solid state disk after the step S1 is dissected; the chemical element composition of the corrosion area is analyzed to confirm the corrosion product and trace the corrosion path; the cross section after the dissection is observed to determine the depth of the corrosion of the solid state disk. In step S1, the salt spray immersion comprises the step S11: intermittently spraying sodium chloride solution in the reliability test box at a first temperature and a first relative humidity for a first time.

2. The method of claim 1, wherein, In step S1, the temperature and humidity cycle comprises:

3. The method of claim 2, wherein, Step S12: reducing the temperature in the reliability test box from the first temperature to a second temperature, and reducing the relative humidity from the first relative humidity to a second relative humidity, and then maintaining the second temperature and the second relative humidity for a second time; Step S13: reducing the temperature in the reliability test box from the second temperature to a third temperature, and increasing the relative humidity from the second relative humidity to a third relative humidity; maintaining the third temperature and the third relative humidity for a third time; wherein the step S12 and the step S13 are repeated, and the number of the repeated cycles is at least 2. In step S1, the power-on working test comprises the step S14: during the process of maintaining the third temperature and the third relative humidity for the third time in step S13, the solid state disk is powered on and runs the simulated load through the load board; and the performance parameters of the solid state disk are detected in real time.

4. The method of claim 3, wherein, In step S1, the number of cycles of the sequentially performed salt spray immersion, temperature and humidity cycle, and power-on working test is 2-5.

5. The method of claim 1, wherein Before step S1, the method further comprises the step S0 of pre-processing and initial reference establishment; 6. The method of claim 1, wherein, The method comprises the steps of: S01, sample pre-processing and initial performance calibration: placing the solid state disk to be tested under standard atmospheric conditions for 24 hours to stabilize its state; Subsequently, on the performance test platform, a standardized read-write load is run, the FIO tool is used, 70% random read / 30% random write is set, the queue depth=32 is set to simulate the typical load of a data center, and the benchmark performance data including IOPS, read-write delay, UECC count, total number of bad blocks, and all SMART attribute values are recorded for at least 30 minutes; the obtained data is used as the benchmark for performance degradation analysis; ​ S02, initial appearance and structure record: using high-resolution microscope to take all-around photos of initial state of solid state disk; imaging internal structure to obtain initial internal structure reference image.

7. A reliability test device of a solid state drive, characterized by, The reliability testing device is used for the reliability testing method of the solid state disk as claimed in any one of claims 1-6; the device comprises: A salt spray system for performing salt spray soaking operation based on preset salt spray spraying conditions; A temperature control system for performing temperature control operation based on preset temperature conditions; A humidity control system for performing humidity control operation based on preset humidity conditions; A power-on load board for powering on the solid state disk; A sensing system for detecting environmental data; An image acquisition system for acquiring images of the solid state disk.

8. The reliability test device of claim 7, wherein, The device comprises a reliability testing box, and the salt spray system, the temperature control system, the humidity control system, the sensing system and the image acquisition system are integrated in the reliability testing box.

9. The reliability test device of claim 8, wherein, The power-on load board is externally provided on the reliability testing box; the power-on load board is connected to the solid state disk through a connecting line, a through hole is formed on the reliability testing box for the connecting line to pass through, a flexible sealing ring is arranged on the through hole in an axial direction, and a mobile docking mechanism is arranged in the reliability testing box, which is used for connecting the connecting line to the solid state disk.

10. The reliability test device of claim 9, wherein, The mobile docking mechanism comprises a driving assembly and a fixing member arranged on a driving end of the driving assembly, and an end of the connecting line close to the solid state disk is arranged on the fixing member.

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