A compression deformation and resilience performance analysis system and device for thermal conductive gasket

Abstract

The present invention relates to the technical field of performance analysis of thermal conductive gaskets, and discloses a compression deformation rebound performance analysis system and device of thermal conductive gaskets. A detection parameter acquisition module is used to collect compression rebound data and environmental data of the thermal conductive gasket in real time; a compression rebound data processing unit in a detection data processing module processes the compression rebound data to obtain a performance evaluation coefficient; an environmental data processing unit processes the environmental temperature and environmental humidity to obtain an environmental evaluation coefficient; a detection performance analysis module is used to calculate a performance evaluation value based on the performance evaluation coefficient and the environmental evaluation coefficient; the performance evaluation value calculated is compared with a preset comparison interval by the performance evaluation module, and the performance of the thermal conductive gasket is judged according to the analysis result of the detection performance analysis module; the present invention comprehensively analyzes the compression rebound data and environmental data of the thermal conductive gasket to accurately judge the performance of the thermal conductive gasket and match it with the use environment.

Description

Technical Field

[0001] The invention relates to the technical field of thermal conductive gasket performance analysis, and in particular to a compression deformation rebound performance analysis system and device for a thermal conductive gasket. Background Art

[0002] Thermally conductive pads have good thermal conductivity, high compressibility, softness and elasticity, stable long-term reliability, suitable for low-pressure application environments, self-adhesive without the need for additional surface adhesive coating, and can provide a variety of thickness options; widely used in rail transportation, new energy vehicles, aerospace, urban lighting, electronics, communications equipment, mobile phones and other industries,

[0003] Thermal pads need to undergo rigorous compression deformation and rebound performance analysis to adapt to different usage environment scenarios. Although the existing compression deformation and rebound performance analysis can realize the performance analysis of thermal pads, it lacks environmental monitoring for performance analysis, resulting in the analysis results being affected by the environment and inaccurate, with certain judgment errors. In addition, the performance of thermal pads is only analyzed separately, lacking matching analysis with the usage environment, resulting in the theoretical performance of thermal pads being qualified but unable to adapt to the actual usage environment, which poses certain potential risks. Summary of the invention

[0004] The purpose of the present invention is to provide a compression deformation rebound performance analysis system and device for a thermally conductive gasket to solve the above technical problems.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A compression deformation and resilience performance analysis system for a thermally conductive gasket, comprising:

[0007] Detection parameter acquisition module, used to collect the compression rebound data and environmental data of the thermal pad in real time;

[0008] The detection data processing module includes a compression-rebound data processing unit and an environmental data processing unit. The compression-rebound data processing unit is used to process the compression-rebound data to obtain a performance evaluation coefficient. The environmental data processing unit is used to process the ambient temperature and ambient humidity to obtain the environmental assessment coefficient ;

[0009] Detection performance analysis module, used to evaluate the performance coefficient and environmental assessment coefficient , through the formula: Calculate the performance evaluation value ;

[0010] In the formula, is the performance evaluation coefficient of the jth thermal pad changing with time under the i-th time gradient, To obtain the performance evaluation coefficient of the jth thermal pad under the i-th time gradient that meets the use environment based on historical data, , is the preset weight coefficient, is the reference value for performance evaluation. is the compensation coefficient, , is the start time point and the end time point, is the number of time gradients;

[0011] The performance evaluation module is used to calculate the performance evaluation value Compare with the preset interval Compare and judge the performance of the thermal pad according to the analysis results of the detection performance analysis module.

[0012] As a further technical solution, the compression rebound data includes compression data and rebound data, wherein the compression data includes the surface area, initial height, displacement, load force, compression rate, and holding time of the thermal pad, and the rebound data includes the rebound height. , Unloading Rate , rebound time , the environmental data includes ambient temperature and ambient humidity.

[0013] As a further technical solution, the performance evaluation coefficient The method to obtain is:

[0014] By formula: ; Calculate the performance evaluation coefficient of the current thermal pad ; In the formula, , is the preset scale factor, is the compression evaluation coefficient, is the rebound evaluation coefficient;

[0015] in, ;

[0016] in, ;

[0017] In the formula, , , , , , is the preset weight coefficient, , , , , , They are the surface area, initial height, displacement, load force, compression rate, and holding time of the current thermal pad. is the corresponding difference function of load force rebound height, is the rebound data of item b, is the conversion coefficient; is the load force variation curve of the jth thermal pad over time, is the curve of the rebound height of the jth thermal pad changing with time.

[0018] As a further technical solution, the ;

[0019] in, is the function of load force versus rebound height; It is the preset standard reference value.

[0020] As a further technical solution, the environmental assessment coefficient The method to obtain is:

[0021] Based on the temperature and humidity sensor, the ambient temperature value of the jth thermal pad during detection is obtained in real time and ambient humidity ;

[0022] By formula: Calculate the environmental assessment coefficient of the jth thermal pad ;

[0023] in, ; ;

[0024] In the formula, , are the standard deviations of the ambient temperature and humidity when the jth thermal pad is tested, It is the system preset ambient temperature warning value. It is the system preset environmental humidity warning value. , is the weight factor.

[0025] As a further technical solution, the working process of the performance evaluation module is as follows:

[0026] The performance evaluation value obtained will be calculated Compare with the preset interval Make comparisons;

[0027] like > , then the compression resilience performance of the thermal conductive gasket is judged to be excellent;

[0028] like ∈ , then the compression resilience performance of the thermal conductive gasket is judged to be qualified;

[0029] like < , then the compression rebound performance of the thermal conductive gasket is judged to be unqualified.

[0030] As a further technical solution, the system further includes a quality management module, which is used to perform quality analysis based on performance evaluation results of randomly selected thermal pads.

[0031] As a further technical solution, the working process of the quality management module is:

[0032] Random draw A group of thermal conductive pads, each group includes n thermal conductive pads, and the performance evaluation values ​​of the thermal conductive pads in each group are obtained in turn , , …, ,… ;

[0033] By formula: ;

[0034] Calculate the quality factor ; In the formula, is the total number of unqualified items;

[0035] The quality factor With preset quality threshold Make comparisons;

[0036] like Greater than , then it is judged that the thermal pad is of poor quality;

[0037] like Less than or equal to , then the thermal pad is considered to be of qualified quality.

[0038] A device for analyzing the compression deformation and resilience performance of a thermally conductive gasket uses the above-mentioned system for analyzing the compression deformation and resilience performance of a thermally conductive gasket.

[0039] Beneficial effects of the present invention:

[0040] The compression rebound data and environmental data collected in real time by the detection parameter acquisition module are then processed by the detection data processing module to obtain the corresponding performance evaluation coefficient and environmental evaluation coefficient, and then the performance evaluation calculation of the current type of thermal gasket is performed through the detection performance analysis module to obtain the performance evaluation value; a preset experimental duration is divided into multiple time gradients, and the change data of the performance evaluation coefficient over time in each time gradient is obtained. Obviously, the greater the deviation from the standard change data, the greater the difference between the performance evaluation coefficient of the currently detected thermal gasket and the standard performance evaluation coefficient, which means that the performance of the thermal gasket is worse and the less it meets the requirements of the required use environment; in summary, the environmental data and the compression rebound data of the thermal gasket itself can be combined to establish a connection and then conduct a comprehensive analysis to accurately judge the matching situation of the current type of thermal gasket and the required use environment. If the performance evaluation value is larger, it means that the performance of this type of thermal gasket is worse relative to the required use environment, and the less it meets the requirements of the required use environment, so as to avoid using the thermal gasket in an unsuitable use environment by only analyzing the performance of the thermal gasket alone. Risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] Figure 1 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1 As shown, the present invention is a compression deformation resilience performance analysis system of a thermal conductive gasket, comprising:

[0045] Detection parameter acquisition module, used to collect the compression rebound data and environmental data of the thermal pad in real time;

[0046] The detection data processing module includes a compression-rebound data processing unit and an environmental data processing unit. The compression-rebound data processing unit is used to process the compression-rebound data to obtain a performance evaluation coefficient. The environmental data processing unit is used to process the ambient temperature and ambient humidity to obtain the environmental assessment coefficient ;

[0047] Detection performance analysis module, used to evaluate the performance coefficient and environmental assessment coefficient , through the formula: Calculate the performance evaluation value ;

[0048] In the formula, is the performance evaluation coefficient of the jth thermal pad changing with time under the i-th time gradient, To obtain the performance evaluation coefficient of the jth thermal pad under the i-th time gradient that meets the use environment based on historical data, , is the preset weight coefficient, is the reference value for performance evaluation. is the compensation coefficient, , is the start time point and the end time point, is the number of time gradients;

[0049] The performance evaluation module is used to calculate the performance evaluation value Compare with the preset interval Compare and judge the performance of the thermal pad according to the analysis results of the detection performance analysis module.

[0050] The compression-rebound data includes compression data and rebound data. The compression data includes the surface area, initial height, displacement, load force, compression rate, and holding time of the thermal pad. The rebound data includes the rebound height. , Unloading Rate , rebound time , the environmental data includes ambient temperature and ambient humidity.

[0051] The working process of the performance evaluation module is as follows:

[0052] The performance evaluation value obtained will be calculated Compare with the preset interval Make comparisons;

[0053] like > , then the compression resilience performance of the thermal conductive gasket is judged to be excellent;

[0054] like ∈ , then the compression resilience performance of the thermal conductive gasket is judged to be qualified;

[0055] like < , then the compression rebound performance of the thermal conductive gasket is judged to be unqualified.

[0056] In this embodiment, the compression rebound data and environmental data collected in real time by the detection parameter acquisition module are processed by the detection data processing module to obtain the corresponding performance evaluation coefficient and environmental evaluation coefficient, and then the performance evaluation calculation of the current type of thermal conductive gasket is performed by the detection performance analysis module, which can be specifically calculated by the following formula: Calculate the performance evaluation value According to the formula, a preset experimental duration is divided into N time gradients, and the performance evaluation coefficient variation data over time in each time gradient is obtained. The larger the value, the greater the difference between the performance evaluation coefficient of the thermal pad currently being tested and the standard performance evaluation coefficient, which means that the performance of the thermal pad is worse and it is less in line with the requirements of the required use environment. It is a reference value for performance evaluation, which is formulated based on historical data and experimental data. The compensation coefficient is determined by obtaining historical data and experience data based on big data; in summary, the environmental data and the compression and rebound data of the thermal gasket itself can be combined to establish a connection and then conduct a comprehensive analysis to accurately determine the matching situation between the current type of thermal gasket and the required use environment. If the performance evaluation value is larger, it means that the performance of this type of thermal gasket is worse relative to the required use environment, and the less it meets the requirements of the required use environment. Avoid analyzing the performance of the thermal gasket alone and using it in an inappropriate use environment, which may cause potential risks for the thermal gasket.

[0057] It should be noted that the ambient temperature and ambient humidity are detected and acquired based on multiple sets of temperature and humidity sensors, and the compression data and rebound data are detected based on special instruments such as displacement sensors and pressure detectors, which will not be elaborated here.

[0058] The performance evaluation coefficient The method to obtain is:

[0059] By formula: ; Calculate the performance evaluation coefficient of the current thermal pad ; In the formula, , is the preset scale factor, is the compression evaluation coefficient, is the rebound evaluation coefficient;

[0060] in, ;

[0061] in, ;

[0062] In the formula, , , , , , is the preset weight coefficient, , , , , , They are the surface area, initial height, displacement, load force, compression rate, and holding time of the current thermal pad. is the corresponding difference function of load force rebound height, is the rebound data of item b, is the conversion coefficient; is the load force variation curve of the jth thermal pad over time, is the curve of the rebound height of the jth thermal pad changing with time.

[0063] Said ;

[0064] in, is the function of load force versus rebound height; It is the preset standard reference value.

[0065] In this embodiment, a method for obtaining a performance evaluation coefficient is provided, specifically, by formula combination: , the calculated , Substituting into the first row of formula, the performance evaluation coefficient of the current type of thermal pad can be calculated. ;pass It can be seen that The larger the value, the The bigger, The larger the compression evaluation coefficient is, the higher the performance evaluation coefficient is. The larger the value, the larger the rebound evaluation coefficient, and the performance evaluation coefficient The larger the value, the faster and more accurately it reflects the performance of the current type of thermal pad.

[0066] The environmental assessment factor The method to obtain is:

[0067] Based on the temperature and humidity sensor, the ambient temperature value of the jth thermal pad during detection is obtained in real time and ambient humidity ;

[0068] By formula: Calculate the environmental assessment coefficient of the jth thermal pad ;

[0069] in, ; ;

[0070] In the formula, , are the standard deviations of the ambient temperature and humidity when the jth thermal pad is tested, It is the system preset ambient temperature warning value. It is the system preset environmental humidity warning value. , is the weight factor, which is formulated based on historical data and experimental data;

[0071] In this embodiment, by formula: ; ; , Substitute into the following formula Calculate the environmental assessment coefficient of the jth thermal pad ; Obviously, the greater the difference between the real-time detected ambient temperature value and the ambient temperature warning value, the greater the environmental assessment coefficient; the greater the difference between the ambient humidity value and the ambient humidity warning value, the greater the environmental assessment coefficient, and the greater the impact on the thermal conductive gasket performance evaluation value.

[0072] The system further comprises a quality management module, which is used for performing quality analysis according to performance evaluation results of randomly selected thermally conductive pads.

[0073] The working process of the quality management module is as follows:

[0074] Random draw A group of thermal conductive pads, each group includes n thermal conductive pads, and the performance evaluation values ​​of the thermal conductive pads in each group are obtained in turn , , …, ,… ;

[0075] By formula: ;

[0076] Calculate the quality factor ; In the formula, is the total number of unqualified items;

[0077] The quality factor With preset quality threshold Make comparisons;

[0078] like Greater than , then it is judged that the thermal pad is of poor quality;

[0079] like Less than or equal to , then the thermal pad is considered to be of qualified quality.

[0080] In this embodiment, a method for quality management of the type of thermally conductive pads that meet the use environment is also provided. Specifically, Calculate the quality coefficient, obviously The larger the difference, the worse the quality stability of the batch of thermal pads, and the greater the potential risk of use; It is the ratio of the thermal gaskets judged as unqualified in the sampling data to the total number. Obviously, the larger the ratio, the greater the impact on the overall quality coefficient. Therefore, the above content can dynamically judge the overall quality situation according to the performance evaluation value, so as to realize the quality stability monitoring and control of the thermal gasket, so as to avoid potential risks in the later use environment.

[0081] A device for analyzing the compression deformation and resilience performance of a thermally conductive gasket uses the above-mentioned system for analyzing the compression deformation and resilience performance of a thermally conductive gasket.

[0082] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A compression deformation and resilience performance analysis system for a thermally conductive gasket, characterized in that: include: Detection parameter acquisition module, used to collect the compression rebound data and environmental data of the thermal pad in real time; The detection data processing module includes a compression-rebound data processing unit and an environmental data processing unit. The compression-rebound data processing unit is used to process the compression-rebound data to obtain a performance evaluation coefficient. The environmental data processing unit is used to process the ambient temperature and ambient humidity to obtain the environmental assessment coefficient ; Detection performance analysis module, used to evaluate the performance coefficient and environmental assessment coefficient , through the formula: Calculate the performance evaluation value ; In the formula, is the performance evaluation coefficient of the jth thermal pad changing with time under the i-th time gradient, To obtain the performance evaluation coefficient of the jth thermal pad under the i-th time gradient that meets the use environment based on historical data, , is the preset weight coefficient, is the reference value for performance evaluation. is the compensation coefficient, , is the start time point and the end time point, is the number of time gradients; The performance evaluation module is used to calculate the performance evaluation value Compare with the preset interval Compare and judge the performance of the thermal pad according to the analysis results of the detection performance analysis module; The compression-rebound data includes compression data and rebound data. The compression data includes the surface area, initial height, displacement, load force, compression rate, and holding time of the thermal pad. The rebound data includes the rebound height. , Unloading rate , rebound time , the environmental data includes environmental temperature and environmental humidity; The performance evaluation coefficient The method to obtain is: By formula: ; Calculate the performance evaluation coefficient of the current thermal pad ; In the formula, , is the preset scale factor, is the compression evaluation coefficient, is the rebound evaluation coefficient; in, ; in, ; In the formula, , , , , , is the preset weight coefficient, , , , , , They are the surface area, initial height, displacement, load force, compression rate, and holding time of the current thermal pad. is the corresponding difference function of load force rebound height, is the rebound data of item b, is the conversion coefficient; is the load force variation curve of the jth thermal pad over time, is the curve of the rebound height of the jth thermal pad changing with time; Said ; in, is the function of load force versus rebound height; is the preset standard reference value; The environmental assessment factor The method to obtain is: Based on the temperature and humidity sensor, the ambient temperature value of the jth thermal pad during detection is obtained in real time and ambient humidity ; By formula: Calculate the environmental assessment coefficient of the jth thermal pad ; in, ; ; In the formula, , are the standard deviations of the ambient temperature and humidity when the jth thermal pad is tested, It is the system preset ambient temperature warning value. It is the system preset environmental humidity warning value. , is the weight factor.

2. The compression deformation and resilience performance analysis system of the thermal conductive gasket according to claim 1, characterized in that: The working process of the performance evaluation module is as follows: The performance evaluation value obtained will be calculated Compare with the preset interval Make comparisons; like > , then the compression resilience performance of the thermal conductive gasket is judged to be excellent; like ∈ , then the compression resilience performance of the thermal conductive gasket is judged to be qualified; like < , then the compression rebound performance of the thermal conductive gasket is judged to be unqualified.

3. The compression deformation and resilience performance analysis system of the thermal conductive gasket according to claim 1, characterized in that: The system further comprises a quality management module, wherein the quality management module is used to perform quality analysis according to performance evaluation results of randomly selected thermally conductive pads.

4. The compression deformation and resilience performance analysis system of the thermal conductive gasket according to claim 3, characterized in that: The working process of the quality management module is as follows: Random draw A group of thermal conductive pads, each group includes n thermal conductive pads, and the performance evaluation values ​​of the thermal conductive pads in each group are obtained in turn , , …, ,… ; By formula: ; Calculate the quality factor ; In the formula, is the total number of unqualified items; The quality factor With preset quality threshold Make comparisons; like Greater than , then it is judged that the thermal pad is of poor quality; like Less than or equal to , then the thermal pad is considered to be of qualified quality.

5. A compression deformation and resilience performance analysis device for a thermally conductive gasket, characterized in that: The analysis device uses the compression deformation resilience performance analysis system of the thermal conductive gasket described in any one of claims 1-4.

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