Method and system for detecting service life of electrochromic glass
By measuring the transmittance and electrochemical impedance of electrochromic glass and combining historical data, the problems of long time consumption and low accuracy of traditional detection methods have been solved, and efficient and accurate life prediction and performance monitoring have been achieved.
Patent Information
- Application Number
- CN202511177963.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-21
- Publication Date
- 2025-11-25
AI Technical Summary
Traditional methods for testing the lifespan of electrochromic glass are time-consuming, costly, and lack comprehensive consideration of electrochemical impedance, resulting in low accuracy in lifespan prediction.
By measuring the transmittance and electrochemical impedance of electrochromic glass, a first curve and a second curve are obtained. Combined with historical data, the cycle stability index of transmittance and impedance change rate is calculated to predict the life of the glass.
It enables efficient and accurate detection of the lifespan of electrochromic glass in a short time, and can monitor performance changes in real time, improving the accuracy and universality of predictions and adapting to different types and batches of glass.
Smart Images
Figure CN121008031A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of glass life testing technology, and in particular to a method and system for testing the life of electrochromic glass. Background Technology
[0002] Electrochromic glass is a type of smart glass whose optical properties (such as light transmittance) can be altered by applying voltage. This type of glass has wide applications in construction, automotive, and electronics. However, the lifespan of electrochromic glass is an important performance indicator that directly affects its market acceptance and application scope.
[0003] Currently, the lifespan testing of electrochromic glass mainly relies on long-term cyclic testing, which is time-consuming, costly, and difficult to monitor in real time. Furthermore, traditional testing methods often lack a comprehensive consideration of electrochemical impedance, resulting in low accuracy in lifespan prediction. Summary of the Invention
[0004] In view of the problems existing in the life detection and systems of electrochromic glass, this invention is proposed.
[0005] Therefore, the problem that this invention aims to solve is that traditional methods are time-consuming and costly.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: In a first aspect, embodiments of the present invention provide a method for detecting the lifetime of electrochromic glass, which includes the following steps: The transmittance and electrochemical impedance of electrochromic glass were measured, and different voltages were applied to the electrochromic glass to obtain the first curve and the second curve. By analyzing the first and second curves, the relationship between the transmittance and cycle life of the electrochromic glass, as well as the relationship between the impedance value and cycle life of the electrochromic glass, were obtained. Based on historical data, the lifespan test results of electrochromic glass were obtained.
[0007] In a preferred embodiment of the life testing method for electrochromic glass according to the present invention, the step of obtaining the first curve includes: Without the application of an external voltage, the colorless transmittance curve was obtained by measuring the transmittance of the electrochromic glass, and the colorless conductivity mechanism impedance curve was obtained by measuring the electrochemical impedance of the electrochromic glass. Under a preset voltage, the color transmittance curve is obtained by measuring the transmittance of the electrochromic glass, and the color conduction mechanism impedance curve is obtained by measuring the electrochemical impedance of the electrochromic glass. By comparing the colorless transmittance curve and the colored transmittance curve, the threshold transmittance curve of the electrochromic glass is obtained. The threshold transmittance curve includes the upper threshold transmittance curve and the lower threshold transmittance curve. Obtain the transmittance curve values for the states above the upper threshold and below the lower threshold, and set the voltage of both sets of values to... ; Obtain the transmittance curve values for the state below the upper threshold and the state above the lower threshold, and set the voltage of both sets of values to ; ; In voltage and voltage Between these, a first curve of transmittance and voltage is obtained, the first curve including a colorless transmittance curve and a colored transmittance curve; In voltage and voltage Between these points, a second curve is obtained showing the impedance value and voltage. This second curve includes a colorless conductivity mechanism impedance curve and a colored conductivity mechanism impedance curve.
[0008] In a preferred embodiment of the life testing method for electrochromic glass according to the present invention, the step of analyzing the first curve and the second curve includes, The rate of change in transmittance for each cycle number is calculated and expressed as follows: ; In the formula, Expressed as the rate of change in transmittance, It is expressed as transmittance in the colored state. It is expressed as transmittance in the colorless state; The rate of change of impedance for each cycle number is calculated and expressed as follows: ; In the formula, Expressed as the rate of change of impedance, Represented as impedance in the colored state. Represented as impedance in the colorless state; By combining the rate of change in transmittance and the rate of change in impedance, the cyclic stability index is calculated for each cycle number, as follows: ; In the formula, S represents the cycle stability index.
[0009] As a preferred embodiment of the life testing method for electrochromic glass according to the present invention, the step of combining the cycle stability index with historical data information includes, Determine if there exists a transmittance change rate in historical data that is identical to the current transmittance change rate: If it exists, then obtain N impedance change rates that are closest to the current impedance change rate, and obtain the historical data information corresponding to the impedance change rate; The cyclic stability index is read from the obtained historical data, and the predicted stability index is obtained through calculation. The calculation formula is as follows: ; In the formula, This is represented as a predicted stability index. Represented as the Nth weight index, It is represented as the cycle stability index in the Nth historical data information; If it does not exist, then perform a reverse check; The reverse judgment includes determining whether there exists an impedance change rate in historical data that is the same as the current impedance change rate: If it exists, then obtain M transmittance change rates that are closest to the current transmittance change rate, and obtain the historical data information corresponding to the transmittance change rate; The cyclic stability index is read from the obtained historical data, and the predicted stability index is obtained through calculation. The calculation formula is as follows: ; In the formula, This is represented as the Mth weight index; If it does not exist, it is marked as missing historical data information.
[0010] As a preferred embodiment of the life testing method for electrochromic glass described in this invention, the step of combining the cycle stability index with historical data information further includes, When the predicted stability index is obtained, the stability index error value is calculated using the following formula: ; In the formula, K represents the stability exponent error value; The stability index error value K is compared with the error threshold. When comparing, When, then perform level one output, when If so, then delete the predicted stability index.
[0011] In a preferred embodiment of the lifespan detection method for electrochromic glass described in this invention, the primary output is: ; In the formula, represents the final cycle stability value; Obtain the cycle stability index closest to the final cycle stability value from historical data, and use the number of cycles of that historical data as the lifetime detection result.
[0012] In a preferred embodiment of the lifespan detection method for electrochromic glass described in this invention, the primary output is: ; In the formula, represents the final cycle stability value; Obtain the cycle stability index closest to the final cycle stability value from historical data, and use the number of cycles of that historical data as the lifetime detection result.
[0013] Secondly, embodiments of the present invention provide a life detection system for electrochromic glass, which includes a data acquisition module, a data analysis module, and an information output module; The acquisition module is used to obtain the changes in transmittance and electrochemical impedance of electrochromic glass under different voltages. The data analysis module is used to analyze and calculate the first curve and the second curve; The information output module is used to provide the lifespan test results of the electrochromic glass.
[0014] Thirdly, embodiments of the present invention provide a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement any step of the above-described method for detecting the lifespan of electrochromic glass.
[0015] Fourthly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, it implements any step of the above-described method for detecting the lifespan of electrochromic glass.
[0016] The beneficial effects of this invention are: This method, by measuring the transmittance and electrochemical impedance of electrochromic glass and combining it with historical data, can complete lifetime testing in a shorter time, greatly improving testing efficiency. Furthermore, by combining the cycle stability index with historical data, the test results can be more accurate and comprehensively reflect the performance changes of electrochromic glass, thereby improving the accuracy of lifetime prediction.
[0017] This method can also monitor the performance changes of electrochromic glass in real time after each cycle, promptly detect potential performance degradation, and help with early warning and maintenance. By using historical data, it can better adapt to different types and batches of electrochromic glass, improving the universality of prediction. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a scene illustration illustrating a lifespan testing method for electrochromic glass. Detailed Implementation
[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.
[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.
[0022] This invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.
[0023] Furthermore, in the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this invention should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0025] Example 1 Reference Figure 1 This is the first embodiment of the present invention, which provides a method for detecting the lifetime of electrochromic glass, including the following steps: S1. Measure the transmittance and electrochemical impedance of the electrochromic glass, and apply different voltages to the electrochromic glass to obtain the first curve and the second curve.
[0026] The steps for obtaining the first curve include: Without the application of an external voltage, the colorless transmittance curve was obtained by measuring the transmittance of the electrochromic glass, and the colorless conductivity mechanism impedance curve was obtained by measuring the electrochemical impedance of the electrochromic glass. Under a preset voltage, the color transmittance curve is obtained by measuring the transmittance of the electrochromic glass, and the color conduction mechanism impedance curve is obtained by measuring the electrochemical impedance of the electrochromic glass. By comparing the colorless transmittance curve and the colored transmittance curve, the threshold transmittance curve of the electrochromic glass is obtained. The threshold transmittance curve includes the upper threshold transmittance curve and the lower threshold transmittance curve. Obtain the transmittance curve values for the states above the upper threshold and below the lower threshold, and set the voltage of both sets of values to... ; Obtain the transmittance curve values for the state below the upper threshold and the state above the lower threshold, and set the voltage of both sets of values to ; ; In voltage and voltage Between these, a first curve of transmittance and voltage is obtained, the first curve including a colorless transmittance curve and a colored transmittance curve; In voltage and voltage Between these points, a second curve is obtained showing the impedance value and voltage. This second curve includes a colorless conductivity mechanism impedance curve and a colored conductivity mechanism impedance curve.
[0027] By simultaneously measuring the transmittance and electrochemical impedance of electrochromic glass, the optical and electrochemical properties of the material under different voltages can be comprehensively evaluated. For experienced personnel, this step can serve as a reminder for subsequent predictions, preventing the predicted results from deviating too much from their own understanding.
[0028] S2. Analyze the first and second curves to obtain the relationship between the transmittance and cycle life of the electrochromic glass, and the relationship between the impedance value and cycle life of the electrochromic glass.
[0029] The steps for analyzing the first and second curves include: The rate of change in transmittance for each cycle number is calculated and expressed as follows: ; In the formula, Expressed as the rate of change in transmittance, It is expressed as transmittance in the colored state. It is expressed as transmittance in the colorless state; The rate of change of impedance for each cycle number is calculated and expressed as follows: ; In the formula, Expressed as the rate of change of impedance, Represented as impedance in the colored state. Represented as impedance in the colorless state; By combining the rate of change in transmittance and the rate of change in impedance, the cyclic stability index is calculated for each cycle number, as follows: ; In the formula, S represents the cycle stability index.
[0030] In this embodiment, it is assumed that 100 experiments were conducted, and the data obtained is shown in Table 1. Table 1: Experimental Parameter Table
[0031] Calculate the rate of change in transmittance, for example, for 0 cycles: ; ; therefore, .
[0032] At this point, the performance changes of electrochromic glass can be comprehensively evaluated, and its lifespan can be predicted. These methods not only improve the efficiency and accuracy of testing but also provide a scientific basis for product quality control and optimization.
[0033] S3. Based on historical data, obtain the life test results of electrochromic glass.
[0034] The steps involved in combining cycle stability metrics with historical data include: Determine if there exists a transmittance change rate in historical data that is identical to the current transmittance change rate: If it exists, then obtain N impedance change rates that are closest to the current impedance change rate, and obtain the historical data information corresponding to the impedance change rate; The cyclic stability index is read from the obtained historical data, and the predicted stability index is obtained through calculation. The calculation formula is as follows: ; In the formula, This is represented as a predicted stability index. Represented as the Nth weight index, It is represented as the cycle stability index in the Nth historical data information; If it does not exist, then perform a reverse check; The reverse judgment includes determining whether there exists an impedance change rate in historical data that is the same as the current impedance change rate: If it exists, then obtain M transmittance change rates that are closest to the current transmittance change rate, and obtain the historical data information corresponding to the transmittance change rate; The cyclic stability index is read from the obtained historical data, and the predicted stability index is obtained through calculation. The calculation formula is as follows: ; In the formula, This is represented as the Mth weight index; If it does not exist, it is marked as missing historical data information.
[0035] In this embodiment, the data obtained through experiments are shown in Table 2; Table 2: Experimental Data on Cyclic Stability Indicators
[0036] Furthermore, the historical data obtained is shown in Table 3; Table 3: Historical Data Information Table
[0037] Assuming that the number of cycles in a certain experimental data is 50, the corresponding rate of change in transmittance is -0.20, the rate of change in impedance is 0.60, and the cycle stability index is -0.33.
[0038] Historical data does indeed contain data with the same rate of change in transmittance as the current rate. Finding data from historical data that matches this rate of change... The closest rate of change of impedance, assuming we choose 3 of the closest rates of change of impedance, namely: , and ; Obtain historical data information corresponding to these impedance change rates, i.e.: corresponding And its lifespan is 70 years; corresponding And its lifespan is 60 years; corresponding And its lifespan is 80 years; By using the calculation formula, assuming the weighting index , and ; Calculated Predicted Stability Index It equals -0.337.
[0039] The steps of combining cycle stability indices with historical data also include, When the predicted stability index is obtained, the stability index error value is calculated using the following formula: ; In the formula, K represents the stability exponent error value; The stability index error value K is compared with the error threshold. When comparing, When, then perform level one output, when If so, then delete the predicted stability index.
[0040] In this embodiment, the stability index error value is calculated. The result obtained was 0.163; Assuming a set error threshold The value is 0.2, which meets the requirements. Therefore, a first-level output is performed.
[0041] The first-level output is, ; In the formula, represents the final cycle stability value; Obtain the cycle stability index closest to the final cycle stability value from historical data, and use the number of cycles of that historical data as the lifetime detection result.
[0042] When historical data is missing, the steps for obtaining lifetime testing results include: Multiple sets of stability index ranges are set, and each set of stability index ranges corresponds to a service life range; Determine which stability index range the cycle stability index falls into, and obtain that stability index range. Output the service life range corresponding to the stability index range, and use the service life range as the service life test result.
[0043] In summary, this method, by measuring the transmittance and electrochemical impedance of electrochromic glass and combining it with historical data, can complete lifetime testing in a shorter time, greatly improving testing efficiency. Furthermore, the combination of cycle stability indicators and historical data ensures that the test results are more accurate and comprehensively reflect the performance changes of electrochromic glass, thereby improving the accuracy of lifetime prediction.
[0044] This method can also monitor the performance changes of electrochromic glass in real time after each cycle, promptly detect potential performance degradation, and help with early warning and maintenance. By using historical data, it can better adapt to different types and batches of electrochromic glass, improving the universality of prediction.
[0045] Example 2 Based on the first embodiment, this embodiment further provides a life detection system for electrochromic glass, including a data acquisition module, a data analysis module, and an information output module; The acquisition module is used to obtain the changes in transmittance and electrochemical impedance of electrochromic glass under different voltages. The data analysis module is used to analyze and calculate the first curve and the second curve; The information output module is used to provide the lifespan test results of the electrochromic glass.
[0046] This embodiment also provides a computer device applicable to the life detection method of electrochromic glass, including a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement the life detection method of electrochromic glass as proposed in the above embodiment.
[0047] The computer device can be a terminal, comprising a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.
[0048] This embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements the life detection method for electrochromic glass as proposed in the above embodiments.
[0049] The storage medium proposed in this embodiment and the data storage method proposed in the above embodiments belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.
[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. A method for detecting the lifespan of electrochromic glass, characterized in that: Includes the following steps, The transmittance and electrochemical impedance of electrochromic glass were measured, and different voltages were applied to the electrochromic glass to obtain the first curve and the second curve. By analyzing the first and second curves, the relationship between the transmittance and cycle life of the electrochromic glass, as well as the relationship between the impedance value and cycle life of the electrochromic glass, were obtained. Based on historical data, the lifespan test results of electrochromic glass were obtained.
2. The lifespan testing method for electrochromic glass as described in claim 1, characterized in that: The steps for obtaining the first curve include: Without the application of an external voltage, the colorless transmittance curve was obtained by measuring the transmittance of the electrochromic glass, and the colorless conductivity mechanism impedance curve was obtained by measuring the electrochemical impedance of the electrochromic glass. Under a preset voltage, the color transmittance curve is obtained by measuring the transmittance of the electrochromic glass, and the color conduction mechanism impedance curve is obtained by measuring the electrochemical impedance of the electrochromic glass. By comparing the colorless transmittance curve and the colored transmittance curve, the threshold transmittance curve of the electrochromic glass is obtained. The threshold transmittance curve includes the upper threshold transmittance curve and the lower threshold transmittance curve. Obtain the transmittance curve values for the states above the upper threshold and below the lower threshold, and set the voltage of both sets of values to... ; Obtain the transmittance curve values for the state below the upper threshold and the state above the lower threshold, and set the voltage of both sets of values to ; ; In voltage and voltage Between these, a first curve of transmittance and voltage is obtained, the first curve including a colorless transmittance curve and a colored transmittance curve; In voltage and voltage Between these points, a second curve is obtained showing the impedance value and voltage. This second curve includes a colorless conductivity mechanism impedance curve and a colored conductivity mechanism impedance curve.
3. The lifespan testing method for electrochromic glass as described in claim 2, characterized in that: The steps for analyzing the first and second curves include: The rate of change in transmittance for each cycle number is calculated and expressed as follows: ； In the formula, Expressed as the rate of change in transmittance, It is expressed as transmittance in the colored state. It is expressed as transmittance in the colorless state; The rate of change of impedance for each cycle number is calculated and expressed as follows: ； In the formula, Expressed as the rate of change of impedance, Represented as impedance in the colored state. Represented as impedance in the colorless state; By combining the rate of change in transmittance and the rate of change in impedance, the cyclic stability index is calculated for each cycle number, as follows: ； In the formula, S represents the cycle stability index.
4. The lifespan testing method for electrochromic glass as described in claim 3, characterized in that: The steps involved in combining cycle stability metrics with historical data include: Determine if there exists a transmittance change rate in historical data that is identical to the current transmittance change rate: If it exists, then obtain N impedance change rates that are closest to the current impedance change rate, and obtain the historical data information corresponding to the impedance change rate; The cyclic stability index is read from the obtained historical data, and the predicted stability index is obtained through calculation. The calculation formula is as follows: ； In the formula, This is represented as a predicted stability index. Represented as the Nth weight index, It is represented as the cycle stability index in the Nth historical data information; If it does not exist, then perform a reverse check; The reverse judgment includes determining whether there exists an impedance change rate in historical data that is the same as the current impedance change rate: If it exists, then obtain M transmittance change rates that are closest to the current transmittance change rate, and obtain the historical data information corresponding to the transmittance change rate; The cyclic stability index is read from the obtained historical data, and the predicted stability index is obtained through calculation. The calculation formula is as follows: ; In the formula, This is represented as the Mth weight index; If it does not exist, it is marked as missing historical data information.
5. The lifespan testing method for electrochromic glass as described in claim 4, characterized in that: The steps of combining cycle stability indices with historical data also include, When the predicted stability index is obtained, the stability index error value is calculated using the following formula: ； In the formula, K represents the stability exponent error value; The stability index error value K is compared with the error threshold. When comparing, When, then perform level one output, when If so, then delete the predicted stability index.
6. The lifespan testing method for electrochromic glass as described in claim 5, characterized in that: The first-level output is, ； In the formula, represents the final cycle stability value; Obtain the cycle stability index closest to the final cycle stability value from historical data, and use the number of cycles of that historical data as the lifetime detection result.
7. The lifespan testing method for electrochromic glass as described in claim 6, characterized in that: When historical data is missing, the steps for obtaining lifetime testing results include: Multiple sets of stability index ranges are set, and each set of stability index ranges corresponds to a service life range; Determine which stability index range the cycle stability index falls into, and obtain that stability index range. Output the service life range corresponding to the stability index range, and use the service life range as the service life test result.
8. A lifespan testing system for electrochromic glass, based on the lifespan testing method for electrochromic glass according to any one of claims 1 to 7, characterized in that: It includes a data acquisition module, a data analysis module, and an information output module; The acquisition module is used to obtain the changes in transmittance and electrochemical impedance of electrochromic glass under different voltages. The data analysis module is used to analyze and calculate the first curve and the second curve; The information output module is used to provide the lifespan test results of the electrochromic glass.
9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, it implements the steps of the life detection method for electrochromic glass according to any one of claims 1 to 7.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the steps of the life detection method for electrochromic glass according to any one of claims 1 to 7.