Method and apparatus for testing consistency of electrochromic device, and terminal device

Abstract

A method and apparatus for testing the consistency of an electrochromic device, and a terminal device. The method comprises: performing activation charging and discharging processing on an electrochromic device (101), and then measuring and acquiring the current performance parameters of the electrochromic device, wherein the current performance parameters comprise at least one of the current light transmittance, the current open-circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity, and the current discharging time (102). Therefore, charging and discharging operations are performed on the electrochromic device, so as to fully activate a chromic material in the electrochromic device, thereby improving the reaction activity of the electrochromic device, and ultimately improving the consistency of various measured performance parameters of the electrochromic device.

Description

Method and device for testing consistency of electrochromic device, and terminal equipment Cross-reference to related applications

[0001] The present application claims priority to the Chinese patent application No. 202410465259.7, filed on April 17, 2024 in the China Patent Office and entitled "Method and device for testing consistency of electrochromic device, and terminal equipment", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application belongs to the technical field of electrochromic technology, and in particular relates to a method and device for testing consistency of electrochromic device, and terminal equipment. BACKGROUND

[0003] Electrochromic devices are a class of advanced functional materials that can be controlled by external electric fields to change their optical properties. The working principle is based on the electrochromic effect, that is, under the action of an external electric field, the optical properties of the material change reversibly, thereby realizing color change or transparency adjustment. Such devices have wide applications in smart windows, display technology and energy-saving buildings. Common electrochromic materials include electrolytes, conductive polymers and inorganic oxides, etc. By adjusting the electric field strength, electrochromic devices have the characteristics of fast response, low power consumption and long service life, and their application in the fields of buildings, automobiles and electronic products provides an advanced and sustainable solution for realizing adjustable light and intelligent control.

[0004] In related technologies, the preparation process of electrochromic devices involves multiple process flows, resulting in inconsistent states of the prepared electrochromic devices, which in turn causes inconsistent performance parameters of the tested electrochromic devices. TECHNICAL PROBLEM

[0005] The embodiments of the present application provide a method and device for testing consistency of electrochromic device, terminal equipment and storage medium, which can solve the problem of inconsistent performance parameters of the tested electrochromic device based on the current electrochromic device preparation method. TECHNICAL SOLUTION

[0006] In a first aspect, the embodiments of the present application provide a method for testing consistency of electrochromic device, comprising: performing activation and charge-discharge processing on the electrochromic device; detecting and obtaining current performance parameters of the electrochromic device, the current performance parameters including at least one of current transmittance, current open-circuit voltage, current charging current, current charging capacity, current charging time, current discharging current, current discharging capacity and current discharging time.

[0007] The technical scheme of the present application mainly comprises the following steps: firstly, the electrochromic device is subjected to activation charging and discharging treatment; and secondly, the electrochromic device is subjected to performance parameter test operation. Thus, the electrochromic device is subjected to activation charging and discharging, so that the electrochromic material in the electrochromic device is fully activated, thereby improving the reaction activity of the electrochromic device, and finally the consistency of the detected performance parameters of the electrochromic device can be improved.

[0008] In a possible implementation manner of the first aspect, the activation charging and discharging treatment of the electrochromic device comprises the following steps:

[0009] The activation charging treatment of the electrochromic device and the activation discharging treatment of the electrochromic device are performed.

[0010] Optionally, in another possible implementation manner of the first aspect, after the activation charging treatment of the electrochromic device, the method further comprises the following steps:

[0011] The charging standing treatment is that the electrochromic device is statically placed for a preset charging standing time after the activation charging treatment of the electrochromic device is stopped.

[0012] Optionally, in another possible implementation manner of the first aspect, after the activation discharging treatment of the electrochromic device, the method further comprises the following steps:

[0013] The discharging standing treatment is that the electrochromic device is statically placed for a preset discharging standing time after the activation discharging treatment of the electrochromic device is stopped.

[0014] Optionally, in another possible implementation manner of the first aspect, the activation charging and discharging treatment of the electrochromic device further comprises the following steps:

[0015] The activation charging treatment of the electrochromic device is performed, the electrochromic device is statically placed for a preset charging standing time, the activation discharging treatment of the electrochromic device is performed, and the electrochromic device is statically placed for a preset discharging standing time, so as to complete the activation charging and discharging treatment.

[0016] The above steps are repeatedly performed for N times, where N is a positive integer.

[0017] Optionally, in another possible implementation manner of the first aspect, when the above steps are repeatedly performed for two times, the activation charging and discharging treatment comprises a first activation charging and discharging treatment and a second activation charging and discharging treatment, the first activation charging and discharging treatment comprises a first activation charging treatment, a first charging standing treatment, a first activation discharging treatment and a first discharging standing treatment, and the first discharging standing treatment is that the electrochromic device is statically placed for a first preset discharging standing time.

[0018] The second activation charge-discharge treatment includes a second activation charge treatment, a second charge standing treatment, a second activation discharge treatment, and a second discharge standing treatment, wherein the second discharge standing treatment is standing the electrochromic device for a second preset discharge standing time length; and the first preset discharge standing time length is less than the second preset discharge standing time length.

[0019] Optionally, in a further possible implementation manner of the first aspect, the above-mentioned activation charge-discharge treatment on the electrochromic device further includes:

[0020] the activation charge treatment on the electrochromic device is stopped when the electrochromic device reaches one of a charge cut-off current, a charge cut-off capacity, and a charge cut-off time; and / or,

[0021] the activation discharge treatment on the electrochromic device is stopped when the electrochromic device reaches one of a discharge cut-off current, a discharge cut-off capacity, and a discharge cut-off time.

[0022] Optionally, in a further possible implementation manner of the first aspect, the above-mentioned activation charge-discharge treatment on the electrochromic device further includes:

[0023] the activation charge treatment on the electrochromic device is stopped when the current charge current of the electrochromic device is equal to the charge cut-off current; and / or, the activation discharge treatment on the electrochromic device is stopped when the current discharge current of the electrochromic device is equal to the discharge cut-off current.

[0024] Optionally, in a further possible implementation manner of the first aspect, the above-mentioned activation charge-discharge treatment on the electrochromic device further includes:

[0025] the activation charge treatment on the electrochromic device is continued when the current charge current of the electrochromic device is higher than the charge cut-off current, until the current charge capacity of the electrochromic device is equal to the charge cut-off capacity; and / or,

[0026] the activation discharge treatment on the electrochromic device is continued when the current discharge current of the electrochromic device is higher than the discharge cut-off current, until the current discharge capacity of the electrochromic device is equal to the discharge cut-off capacity.

[0027] Optionally, in a further possible implementation manner of the first aspect, the above-mentioned activation charge-discharge treatment on the electrochromic device further includes:

[0028] activating the electrochromic device, when a current charging current of the electrochromic device is higher than a charging cutoff current, continuing to charge the electrochromic device until a current charging time of the electrochromic device is equal to a charging cutoff time, and stopping charging; and / or,

[0029] activating the electrochromic device, when a current charging current of the electrochromic device is higher than a charging cutoff current, continuing to charge the electrochromic device until a current charging time of the electrochromic device is equal to a charging cutoff time, and stopping charging; and / or,

[0030] Optionally, in a further possible implementation manner of the first aspect, the method further includes:

[0031] activating the electrochromic device N times, where N is a positive integer;

[0032] measuring a current performance parameter of the electrochromic device, and determining whether the current performance parameter falls into a corresponding preset parameter interval according to the current performance parameter;

[0033] when the current performance parameter falls into the corresponding preset parameter interval, the test result of the electrochromic device is qualified.

[0034] Optionally, in a further possible implementation manner of the first aspect, after the performance parameter of the electrochromic device is detected and acquired, the method further includes:

[0035] activating the electrochromic device N times, where N is a positive integer;

[0036] measuring a current performance parameter of the electrochromic device, and determining whether the current performance parameter falls into a corresponding preset parameter interval according to the current performance parameter;

[0037] when the current performance parameter does not fall into the corresponding preset parameter interval, activating the electrochromic device for an N+1th time;

[0038] detecting and acquiring a calibrated current performance parameter, and comparing the calibrated current performance parameter with the preset parameter interval.

[0039] In a second aspect, an embodiment of the present application provides a device for testing consistency of an electrochromic device, including: a controller configured to activate the electrochromic device; and a tester configured to detect and acquire a current performance parameter of the electrochromic device, the current performance parameter including at least one of a current transmittance, a current open-circuit voltage, a current charging current, a current charging capacity, a current charging time, a current discharging current, a current discharging capacity, and a current discharging time.

[0040] In a third aspect, an embodiment of the present application provides a terminal device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor implements the method for testing consistency of an electrochromic device as described above when running the computer program.

[0041] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method for testing consistency of an electrochromic device as described above. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0043] FIG. 1 is a flowchart of a method for testing consistency of an electrochromic device according to an embodiment of the present application;

[0044] FIG. 2 is a structural diagram of an electrochromic device according to an embodiment of the present application;

[0045] FIG. 3 is a flowchart of a method for testing consistency of an electrochromic device according to another embodiment of the present application;

[0046] FIG. 4 is a flowchart of a method for testing transmittance of an electrochromic device according to still another embodiment of the present application;

[0047] FIG. 5 is a schematic diagram of full charging of an electrochromic device according to an embodiment of the present application;

[0048] FIG. 6 is a schematic diagram of charging of an electrochromic device according to an embodiment of the present application;

[0049] FIG. 7 is a flowchart of a method for testing consistency of an electrochromic device according to yet another embodiment of the present application;

[0050] FIG. 8 is a structural diagram of a testing device for testing consistency of an electrochromic device according to an embodiment of the present application;

[0051] FIG. 9 is a structural diagram of a terminal device according to an embodiment of the present application.

[0052] REFERENCE SIGNS

[0053] Electrochromic device - 20, substrate layer - 21, electrochromic layer - 22, substrate layer - 23. Embodiments of the present application

[0054] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular architectures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known methods, devices, circuits, and

[0055] It is to be understood that the terminology “includes”, “has”, “holds”, “comprises”, “containing”, “having” or “including” when used in this specification and / or the claims indicates an inclusion of one or more features, integers, steps, operations, elements, and / or components but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0056] It is also to be understood that the terminology “and / or” when used in this specification and / or the claims indicates an inclusion of one or more of the associated listed items and all possible combinations thereof.

[0057] As used in this specification and claims, the terms “if’ and “when” can be interpreted to mean “upon” or “in response to a determination” or “in response to a detection” of, as applicable. Similarly, the phrase “if determined” or “if detected” can be interpreted to mean “upon determining” or “in response to determining” or “upon detecting” or “in response to detecting” [the recited condition or event], as applicable.

[0058] In addition, the terms “first”, “second”, “third”, etc. in the description of the specification and the claims are used only to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0059] Reference in the specification to “one embodiment” or “some embodiments” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrases “in one embodiment”, “in some embodiments”, “in other embodiments”, “in additional embodiments” or the like in various places in the specification are not necessarily all referring to the same embodiment, unless otherwise specified. The terms “comprise”, “comprising”, “have”, “having”, “include”, “including” and “contain”, “containing” or variants thereof are meant to be inclusive in that a statement that a composition, method, or process “comprises”, “comprising”, “have”, “having”, “include”, “including” or “contain”, “containing” something, means that something is included, but does not mean that the composition, method, or process cannot include more than one of something.

[0060] The test method, device, terminal equipment and storage medium for consistency of electrochromic device provided by the present application are described in detail below with reference to the accompanying drawings.

[0061] FIG. 1 shows a flowchart of a method for testing consistency of an electrochromic device according to an embodiment of the present application.

[0062] As shown in FIG. 1, the method for testing consistency of the electrochromic device includes the following steps:

[0063] In step 101, the electrochromic device is subjected to activation charging and discharging treatment.

[0064] The electrochromic device can be a device formed by placing an electrochromic layer between two substrate layers and pressing them together, where the substrate layers can be glass or other materials. As shown in FIG. 2, the electrochromic device 20 includes a substrate layer 21, an electrochromic layer 22, and a substrate layer 23, and the electrochromic device 20 is formed by pressing the substrate layer 21, the electrochromic layer 22, and the substrate layer 23 together. The electrochromic layer can be a solid-state electrochromic material, which can include a color-changing material layer, an electrolyte layer, and an ion storage layer stacked in order. The materials of the color-changing material layer, the electrolyte layer, and the ion storage layer can be materials in the prior art, which are not specifically limited in the present application.

[0065] The activation charging and discharging operation can refer to applying a predetermined voltage or current to the electrochromic device to achieve the charging and discharging processes of the electrochromic device. After the preparation of the electrochromic device, due to the complex high-temperature and high-pressure process conditions, the microstructure of the color-changing material layer has not yet shrunk to a stable form, or the ion reaction sites on the surface of the color-changing material layer have not yet fully opened, resulting in low reactivity of the color-changing material layer, hindering the intercalation and deintercalation processes of ions in the electrolyte layer. Therefore, activation charging and discharging treatment is needed to improve the reactivity of the electrochromic device. As the activation proceeds, the color-changing material in the device is fully activated, and the performance of the device reaches an optimal state.

[0066] As a possible implementation, when the electrochromic device has already undergone activation charging and discharging treatment, but has been placed for a long time, the states of the various electrochromic devices will differ. In order to eliminate the state differences between the devices, a simple one-time activation charging and discharging treatment can be used at this time.

[0067] As another possible implementation, in order to make the reactivity of the electrochromic device higher, the number of activation charging and discharging treatments can be increased, and the electrochromic device can be subjected to two or more activation charging and discharging treatments. With the increase in the number of activation charging and discharging treatments, the state of the electrochromic device will also be more stable.

[0068] In the embodiments of the present application, the activation charging and discharging treatment of the electrochromic device can make the performance of the electrochromic device more stable, thereby improving the consistency of the performance parameters of the tested electrochromic device.

[0069] In step 102, the current performance parameter of the electrochromic device is detected and acquired, and the current performance parameter includes at least one of the current transmittance, the current open circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity and the current discharging time.

[0070] The transmittance can refer to the degree of light passing through the electrochromic device when it is regulated by an electric field (applied voltage or current). The transmittance changes with the electric field intensity, enabling the electrochromic device to realize color change.

[0071] The open circuit voltage can refer to the voltage difference between the positive and negative electrodes of the electrochromic device when the device is powered off and there is no load between the positive and negative electrodes.

[0072] The charging current can refer to the charge flow in the closed circuit during the charging process of the electrochromic device under a given voltage. When the electrochromic device is in the charging state, an external voltage is applied in the closed circuit composed of the device and the power supply, and the flow of electric charge forms a current, which is called charging current. The magnitude of the charging current depends on multiple factors, including the structure of the device, the material properties, the external voltage, etc. Generally, when the electrochromic device is in the initial stage of charging, the charging current reaches a maximum peak value, and as the charging process of the device proceeds, the charging current gradually decreases until it approaches 0. The change in the charging current reflects the response and characteristics of the electrochromic device during the charging process.

[0073] The current charging current can refer to the current charge flow in the closed circuit during the activation and charging process of the electrochromic device when an external voltage is applied to the device for testing.

[0074] The discharging current can refer to the charge flow in the closed circuit during the discharging process of the electrochromic device under a given voltage. When the electrochromic device is in the discharging state, an external voltage is applied in the closed circuit composed of the device and the power supply, and the flow of electric charge forms a current, which is called discharging current. The magnitude of the discharging current depends on multiple factors, including the structure of the device, the material properties, the external voltage, etc. Generally, when the electrochromic device is in the initial stage of discharging, the discharging current reaches a maximum peak value, and as the discharging process of the device proceeds, the discharging current gradually decreases until it approaches 0. The change in the discharging current reflects the response and characteristics of the electrochromic device during the discharging process. It should be noted that the direction of the external voltage forming the charging current is opposite to that of the external voltage forming the discharging current.

[0075] The current discharge current can refer to the current charge flowing in the closed circuit when the electrochromic device is activated and discharged by applying an external voltage during testing.

[0076] The current discharge capacity can refer to the amount of charge required for the electrochromic device to change from the second state to the first state by applying an external voltage to activate the discharge of the electrochromic device during testing.

[0077] It should be noted that the above examples of the first state and the second state are only exemplary. Depending on the material of the electrochromic device, the first state can also be the bright state of the electrochromic device, and the second state can be the dark state of the electrochromic device. The present application does not limit this. In addition, the dark state of the first state can be the darkest state of the electrochromic device, and the bright state of the second state can be the brightest state of the electrochromic device. Alternatively, the bright state of the first state can be the brightest state of the electrochromic device, and the dark state of the second state can be the darkest state of the electrochromic device. At the same time, the following limitations related to the first state and the second state of the electrochromic device can refer to one of the above embodiments of the first state and the second state.

[0078] The current discharge capacity can refer to the amount of charge required for the electrochromic device to change from the second state to the first state by applying an external voltage to activate the discharge of the electrochromic device during testing.

[0079] The current discharge time can refer to the time required for the electrochromic device to change from the first state to the second state by applying an external voltage to activate the discharge of the electrochromic device during testing.

[0080] The current discharge time can refer to a time required for applying an external voltage to the electrochromic device to perform an activation discharge process to make the electrochromic device change from the second state to the first state during the testing of the electrochromic device. The method for testing the consistency of the electrochromic device provided in the application first performs an activation charge-discharge process on the electrochromic device, and then detects and obtains the current performance parameter of the electrochromic device, the current performance parameter including at least one of the current transmittance, the current open-circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity, and the current discharging time. In this way, by performing the activation charge-discharge process on the electrochromic device, the electrochromic material in the electrochromic device is fully activated, the reactivity of the electrochromic device is improved, and thus the consistency of the detected performance parameter of the electrochromic device can be improved.

[0081] The method for testing the consistency of the electrochromic device provided in the embodiments of the application will be further described below in combination with FIG. 3.

[0082] FIG. 3 shows a flowchart of another method for testing the consistency of the electrochromic device provided in the embodiments of the application.

[0083] As shown in FIG. 3, the method for testing the consistency of the electrochromic device includes the following steps:

[0084] Step 301: performing an activation charging process on the electrochromic device and performing a charging standing process.

[0085] Step 302: performing an activation discharging process on the electrochromic device and performing a discharging standing process.

[0086] It should be noted that when performing the activation charge-discharge process on the electrochromic device, the electrochromic device can be first charged at a constant voltage with current limiting, so as to brighten the electrochromic device. At this time, the activation charging of the electrochromic device is stopped and a period of time is allowed to stand. After the charging standing process, the electrochromic device can be discharged at a constant voltage with current limiting, so as to darken the electrochromic device. At this time, the activation discharging of the electrochromic device is stopped and a period of time is allowed to stand. After the discharging standing process, one activation charge-discharge process on the electrochromic device is completed.

[0087] For example, in an embodiment, the electrochromic device can be activated and charged using a constant voltage of 1.4 V to reach the second state, and then the activation and charging is stopped and the electrochromic device is left for 10 seconds, wherein the protection current during the activation and charging process can be 600 mA. After the charging and resting process, the electrochromic device can be activated and discharged using a constant voltage of -0.8 V to reach the first state, and then the activation and discharging is stopped and the electrochromic device is left for 10 seconds, wherein the protection current during the activation and discharging process can be 600 mA. In the above activation and charging / discharging process, the charging voltage range can be 0.6 V to 1.6 V, the protection current range can be 50 mA to 2000 mA, and the discharging voltage range can be -0.4 V to -1.2 V. The above description is only exemplary, and the present application is not limited in this regard.

[0088] It should be noted that the main reason for setting the resting time is that in the continuous charging and discharging process, the pressure difference of the external voltage changes sharply, resulting in unstable line voltage, and the high voltage generated can damage the electrochromic device, and even cause the device to burn out. Therefore, by setting the resting time, the change range of the external voltage pressure difference in a short time is avoided, the stability of the applied voltage is improved, and the situation of the device being damaged by high voltage is effectively avoided, thereby protecting the electrochromic device from being damaged. For example, the resting time can be set to 2 s to 180 s.

[0089] Step 303, the above steps are repeatedly executed N times, wherein N is a positive integer.

[0090] It should be noted that when the electrochromic device has undergone an activation and charging / discharging process, N is 1, but in actual situations, in order to make the state of the electrochromic device after the activation and charging / discharging process more stable, the electrochromic device can be repeatedly activated and charged / discharged multiple times to ensure that the electrochromic device reaches the expected performance level and has the required stability and reliability.

[0091] Further, in an embodiment of the present application, the step 303 can further include: when N is equal to 2, i.e. when the step is repeated twice, the activation charge-discharge process includes a first activation charge-discharge process and a second activation charge-discharge process, the first activation charge-discharge process includes a first activation charging process, a first charging standing process, a first activation discharging process and a first discharging standing process, wherein the first discharging standing process is to stand the electrochromic device for a first preset discharging standing time; the second activation charge-discharge process includes a second activation charging process, a second charging standing process, a second activation discharging process and a second discharging standing process, wherein the second discharging standing process is to stand the electrochromic device for a second preset discharging standing time; the first preset discharging standing time is less than the second preset discharging standing time.

[0092] It should be noted that when the number of activation charge-discharge processes is greater than one, the current discharging standing time is longer than the discharging standing time corresponding to the last activation discharging process, because after each activation charge-discharge process, especially after the last activation discharging process, although the external voltage is no longer applied to the electrochromic device, the internal reaction of the electrochromic device material has not stopped, and ions will continue to migrate relying on the force of potential difference, thereby causing the performance parameters of the electrochromic device to change, and further causing the test to be inaccurate. For example, the light transmittance of the electrochromic device is in a non-uniform state, so during the standing process, it can be seen that the light transmittance of some positions is still rising or falling, so the current discharging standing time is set to be longer than the discharging standing time corresponding to the last activation discharging process, so that the overall performance of the electrochromic device tends to be stable during the standing process, and the measured light transmittance data is more accurate.

[0093] In step 304, the current performance parameters of the electrochromic device are detected and acquired, and the current performance parameters include at least one of the current light transmittance, the current open circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity and the current discharging time.

[0094] The electrochromic device consistency test method provided by the application first activates and charges the electrochromic device, and then performs charging and standing treatment. The electrochromic device is activated and discharged, and then performs discharging and standing treatment. The above steps are repeated N times, wherein N is a positive integer. Finally, the current performance parameters of the electrochromic device are detected and obtained, including at least one of the current transmittance, the current open-circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity and the current discharging time. Thus, by activating and discharging the electrochromic device multiple times, the performance stability and reliability of the device can be improved. Through repeated charging and discharging cycles, the reaction activity of the electrochromic material can be improved, and the ion insertion and extraction process in the electrolyte can be improved, thereby enhancing the electrochemical performance of the device. In addition, multiple activations can gradually bring the device to the best working state, improve the optical response speed and the uniformity of color change, and enable the electrochromic device to achieve higher performance and longer-term stability.

[0095] The electrochromic device consistency test method provided by the application will be further described below in combination with FIG. 4.

[0096] FIG. 4 shows a flowchart of another electrochromic device consistency test method provided by an embodiment of the application.

[0097] As shown in FIG. 4, the electrochromic device consistency test method includes the following steps:

[0098] Step 401: Activate and charge the electrochromic device until the electrochromic device reaches one of the charging cutoff current, the charging cutoff capacity and the charging cutoff time, and stop charging.

[0099] Step 402: Activate and discharge the electrochromic device until the electrochromic device reaches one of the discharging cutoff current, the discharging cutoff capacity and the discharging cutoff time, and stop discharging.

[0100] It should be noted that, in order to avoid the problem of overcharging caused by abnormality of the electrochromic device during the activation charging process or the activation discharging process, different cut-off conditions are set during the activation charging and discharging process of the electrochromic device. Further, due to the low consistency of the device, part of the device will trigger the cut-off current, and part of the device will continue to charge until the cut-off capacity and cut-off time are triggered. When the electrochromic device reaches one of the charging cut-off current, the charging cut-off capacity and the charging cut-off time, or one of the discharging cut-off current, the discharging cut-off capacity and the discharging cut-off time, the charging or discharging is stopped, so as to avoid the overcharging or overdischarging problem caused by abnormality of the electrochromic device, so as to ensure the stability of the electrochromic device, shorten the time of the activation charging and discharging process, and improve the efficiency of the activation charging and discharging process.

[0101] The determination of the charging and discharging cut-off current will be described below.

[0102] As shown in the electrochromic device charging and discharging schematic diagram of FIG. 5, as the charging time of the device increases, the charging current or discharging current of the device will gradually tend to zero. Since it takes a long time to reach zero current, in order to reduce the waiting time, a charging cut-off current and a discharging cut-off current close to zero are set. When the current value of the current charging current is equal to the current value of the cut-off charging current, or the current value of the current discharging current is equal to the current value of the cut-off discharging current, the device stops charging or discharging. At this time, the time when the electrochromic device reaches the charging cut-off current or the discharging cut-off current is the stop charging time and the stop discharging time, and the capacity when the electrochromic device reaches the charging cut-off current or the discharging cut-off current is the stop charging capacity and the stop discharging capacity. When performing the activation charging and discharging process, the priority of triggering the charging cut-off current condition and the discharging cut-off current condition is the highest, and the absolute value range of the charging and discharging cut-off current is usually 10-100 mA. In the embodiments of the present application, the current charging current, the current discharging current, the charging cut-off current and the discharging cut-off current all represent the absolute value of the corresponding current.

[0103] For example, when charging the electrochromic device using an external voltage, the charging of the electrochromic device is stopped when the current value of the current of the electrochromic device is detected to be equal to the current value of the charging cutoff current; when discharging the electrochromic device using an external voltage, the discharging of the electrochromic device is stopped when the current value of the current of the electrochromic device is detected to be equal to the current value of the discharging cutoff current. In some embodiments, when charging the electrochromic device using an external voltage, the current value of the current of the electrochromic device is detected to be greater than the current value of the charging cutoff current, or when discharging the electrochromic device using an external voltage, the current value of the current of the electrochromic device is detected to be greater than the current value of the discharging cutoff current. This is because part of the electrochromic device internally forms a circuit independent of the normal electrochemical reaction of the device when the voltage exists, generating additional current, thereby causing the current charging current or the current discharging current to be too high.

[0104] The determination of the charging and discharging cutoff time will be described below.

[0105] In the activation charging process of the electrochromic device using an external voltage, as shown in the electrochromic device charging schematic diagram of FIG. 6, because part of the electrochromic device has a slow charging problem, when the stop charging time T1 is reached, the current value of the current of the current charging current of part of the electrochromic device is greater than the current value of the charging cutoff current, so the charging cutoff current condition is not triggered. However, as time increases, the electrochromic device is always in a charging state, and the charging cutoff current condition can be triggered at T11. In order to avoid abnormal overcharging of the electrochromic device, the charging cutoff time T11 can be set to be greater than the stop charging time T1, so that abnormal overcharging of the device can be avoided. When setting the charging cutoff time, the charging cutoff time T11 is generally 1 to 10 seconds longer than the stop charging time.

[0106] Similarly, in the activation discharging process of the electrochromic device using an external voltage, because part of the electrochromic device has a slow discharging problem, when the stop discharging time is reached, the current value of the current of the current discharging current of part of the electrochromic device is greater than the current value of the discharging cutoff current, so the discharging cutoff current condition is not triggered. However, as time increases, the electrochromic device is always in a discharging state, and the discharging cutoff current condition can be triggered at a certain time. In order to avoid abnormal overdischarging of the electrochromic device, the discharging cutoff time can be set to be greater than the stop discharging time, so that overdischarging of the device can be avoided. When setting the discharging cutoff time, the discharging cutoff time is generally 1 to 10 seconds longer than the stop discharging time.

[0107] The determination of the charging and discharging cutoff capacity will be described below.

[0108] In the activation charging process of the electrochromic device using an external voltage, because part of the electrochromic device has a slow charging problem, when the stop charging time is reached, the current value of the current charging current of part of the electrochromic device is greater than the current value of the charging cutoff current, so the condition of the charging cutoff current cannot be triggered. However, the current charging capacity of the electrochromic device is greater than the stop charging capacity. In order to avoid the current charging capacity of the electrochromic device from increasing all the time, the charging cutoff capacity can be set to be greater than the stop charging capacity to avoid overcharging of the device. For example, the charging cutoff capacity can be 0.5 mAh greater than the stop charging capacity. The range of the charging cutoff capacity greater than the stop charging capacity can be set to 0.2-1.0 mAh.

[0109] Similarly, in the activation discharging process of the electrochromic device using an external voltage, because part of the electrochromic device has a slow discharging problem, when the stop discharging time is reached, the current value of the current discharging current of part of the electrochromic device is greater than the current value of the discharging cutoff current, so the condition of the discharging cutoff current cannot be triggered. However, the current discharging capacity of the electrochromic device is greater than the stop discharging capacity. In order to avoid the current discharging capacity of the electrochromic device from increasing all the time, the discharging cutoff capacity can be set to be greater than the stop discharging capacity to avoid overcharging of the device. For example, the discharging cutoff capacity can be 0.5 mAh greater than the stop discharging capacity. The range of the discharging cutoff capacity greater than the stop discharging capacity can be set to 0.2-1.0 mAh.

[0110] Step 403, detecting and acquiring the current performance parameters of the electrochromic device, the current performance parameters including at least one of the current transmittance, the current open circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity and the current discharging time.

[0111] The specific implementation process and principles of the above step 403 can refer to the detailed description of the above embodiments, which will not be repeated here.

[0112] The electrochromic device consistency test method provided by the application first activates and charges the electrochromic device until one of the charging cut-off current, the charging cut-off capacity and the charging cut-off time of the electrochromic device is reached, and then stops charging. Then the electrochromic device is activated and discharged until one of the discharging cut-off current, the discharging cut-off capacity and the discharging cut-off time of the electrochromic device is reached, and then stops discharging. The current performance parameters of the electrochromic device are detected and obtained, and the current performance parameters include at least one of the current transmittance, the current open circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity and the current discharging time. In this way, by setting different charging and discharging cut-off conditions, the electrochromic devices with different consistencies can all complete the activation and discharging process when detected, and the overcharging and overdischarging of the electrochromic device during the activation process can be avoided. For example, the test temperature can be set to 0-25℃.

[0113] The electrochromic device consistency test method provided by the application will be further described below in combination with FIG. 7.

[0114] FIG. 7 shows a flowchart of another electrochromic device consistency test method provided by an embodiment of the application.

[0115] As shown in FIG. 7, the electrochromic device consistency test method includes the following steps:

[0116] Step 701: Activating and charging the electrochromic device for N times, where N is a positive integer; and step 702: detecting and obtaining the current performance parameters of the electrochromic device, and the current performance parameters include at least one of the current transmittance, the current open circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity and the current discharging time.

[0117] The specific implementation process and principles of steps 701-702 are described above, and will not be repeated here.

[0118] Step 703: According to the current performance parameters, it is judged whether they fall into the corresponding preset parameter interval.

[0119] Step 704: When the current performance parameters fall into the corresponding preset parameter interval, the test result of the electrochromic device is qualified.

[0120] In an embodiment, the following operation steps can be performed on the electrochromic device: 7011. First constant voltage charging to the device to reach the second state, and standing until it is stable; 7012. First constant voltage discharging to the device to reach the first state, and standing until it is stable; 7013. Second constant voltage charging to the device to reach the second state, and standing until it is stable; 7014. Second constant voltage discharging to the device to reach the first state, and standing until it is stable; 7021. Third constant voltage charging to the device to reach the second state, and measuring the current charging current of the device, and standing until it is stable; 7022. Third constant voltage discharging to the device to reach the first state, and measuring the current discharging current of the device, and standing until it is stable.

[0121] In the present embodiment, the step 701 includes a first activation charging and discharging process and a second activation charging and discharging process, and N is 2, wherein the steps 7011 and 7012 are the first activation charging and discharging process performed on the electrochromic device, and the steps 7013 and 7014 are the second activation charging and discharging process performed on the electrochromic device.

[0122] The step 702 includes detecting the current charging current and the current discharging current of the electrochromic device, wherein the step 7021 is detecting the current charging current of the electrochromic device, and the step 7022 is detecting the current discharging current of the electrochromic device. In the step 7021, the current charging current of the electrochromic device at the end of the third constant voltage charging process can be measured after the third constant voltage charging makes the device reach the second state. In the step 7022, the current discharging current of the electrochromic device at the end of the third constant voltage discharging process can be measured after the third constant voltage discharging makes the device reach the first state.

[0123] In the steps 703 and 704, it is determined whether the current performance parameter falls within the corresponding preset parameter interval according to the current performance parameter. If the current value of the current charging current falls within the preset parameter interval, the test result of the current charging current of the electrochromic device is qualified. If the current value of the current discharging current falls within the preset parameter interval, the test result of the current discharging current of the electrochromic device is qualified. The current charging current after charging and / or the current discharging current after discharging can be tested by the person skilled in the art according to the consistency requirement of the electrochromic device.

[0124] In another embodiment, the following operation steps can be performed on the electrochromic device: 7011. First constant voltage charging to the device to reach the second state, and standing until it is stable; 7012. First constant voltage discharging to the device to reach the first state, and standing until it is stable; 7013. Second constant voltage charging to the device to reach the second state, and standing until it is stable; 7014. Second constant voltage discharging to the device to reach the first state, and standing until it is stable; 7021. Third constant voltage charging to the device to reach the second state, and measuring the current charging capacity of the device, and standing until it is stable; 7022. Third constant voltage discharging to the device to reach the first state, and measuring the current discharging capacity of the device, and standing until it is stable.

[0125] In the present embodiment, step 701 includes a first activation charging and discharging process and a second activation charging and discharging process, and N is 2, wherein steps 7011 and 7012 are the first activation charging and discharging process performed on the electrochromic device, and steps 7013 and 7014 are the second activation charging and discharging process performed on the electrochromic device.

[0126] Step 702 includes detecting the current charging capacity and the current discharging capacity of the electrochromic device, wherein step 7021 is detecting the current charging capacity of the electrochromic device, and step 7022 is detecting the current discharging capacity of the electrochromic device. In step 7021, the current charging capacity of the electrochromic device at the end of the third constant voltage charging process can be measured after the third constant voltage charging makes the device reach the second state. In step 7022, the current discharging capacity of the electrochromic device at the end of the third constant voltage discharging process can be measured after the third constant voltage discharging makes the device reach the first state.

[0127] In steps 703 and 704, it is determined whether the current performance parameters fall within the corresponding preset parameter intervals. If the capacity value of the current charging capacity falls within the preset parameter interval, the test result of the current charging capacity of the electrochromic device is qualified. If the capacity value of the current discharging capacity falls within the preset parameter interval, the test result of the current discharging capacity of the electrochromic device is qualified.

[0128] In yet another embodiment, the following operation steps can be performed on the electrochromic device: 7011. First constant voltage charging to the device to reach the second state, and standing until it is stable; 7012. First constant voltage discharging to the device to reach the first state, and standing until it is stable; 7013. Second constant voltage charging to the device to reach the second state, and standing until it is stable; 7014. Second constant voltage discharging to the device to reach the first state, and standing until it is stable; 7021. Third constant voltage charging to the device to reach the second state, and measuring the current charging time of the device, and standing until it is stable; 7022. Third constant voltage discharging to the device to reach the first state, and measuring the current discharging time of the device, and standing until it is stable. The current charging capacity after charging and / or the current discharging capacity after discharging can be tested by the person skilled in the art according to the consistency requirements of the electrochromic device.

[0129] In the present embodiment, step 701 includes first and second activation charging and discharging processes, and N is 2, wherein steps 7011 and 7012 are first activation charging and discharging processes performed on the electrochromic device, and steps 7013 and 7014 are second activation charging and discharging processes performed on the electrochromic device.

[0130] Step 702 includes detecting the current charging time and the current discharging time of the electrochromic device, wherein step 7021 is detecting the current charging time of the electrochromic device, and step 7022 is detecting the current discharging time of the electrochromic device. In step 7021, the current charging time of the electrochromic device at the end of the third constant voltage charging process can be measured after the third constant voltage charging makes the device reach the second state. In step 7022, the current discharging time of the electrochromic device at the end of the third constant voltage discharging process can be measured after the third constant voltage discharging makes the device reach the first state.

[0131] In steps 703 and 704, it is determined whether the current performance parameters fall within the corresponding preset parameter intervals. If the time value of the current charging time falls within the preset parameter interval, the test result of the current charging time of the electrochromic device is qualified. If the time value of the current discharging time falls within the preset parameter interval, the test result of the current discharging time of the electrochromic device is qualified. The current charging time after charging and / or the current discharging time after discharging can be tested by the person skilled in the art according to the consistency requirements of the electrochromic device.

[0132] In yet another embodiment, the following steps can be performed on the electrochromic device: 7011. First constant voltage charging to the device to reach the second state, and resting until it is stable; 7012. First constant voltage discharging to the device to reach the first state, and resting until it is stable; 7013. Second constant voltage charging to the device to reach the second state, and resting until it is stable; 7014. Second constant voltage discharging to the device to reach the first state, and resting until it is stable; 7021. Third constant voltage charging to the device to reach the second state, and resting until it is stable, and measuring the current open circuit voltage of the device; 7022. Third constant voltage discharging to the device to reach the first state, and resting until it is stable, and measuring the current open circuit voltage of the device.

[0133] In the present embodiment, the step 701 comprises a first activation charging and discharging process and a second activation charging and discharging process, and N is 2, wherein the steps 7011 and 7012 are the first activation charging and discharging process performed on the electrochromic device, and the steps 7013 and 7014 are the second activation charging and discharging process performed on the electrochromic device.

[0134] The step 702 comprises detecting the current open circuit voltage of the electrochromic device, wherein the step 7021 is detecting the current open circuit voltage of the electrochromic device after being charged and disconnected, and the step 7022 is detecting the current open circuit voltage of the electrochromic device after being discharged and disconnected. In the step 7021, after the third constant voltage charging makes the device reach the second state, the current open circuit voltage of the electrochromic device is measured after resting until it is stable. In the step 7022, after the third constant voltage discharging makes the device reach the first state, the current open circuit voltage of the electrochromic device is measured after resting until it is stable.

[0135] In the steps 703 and 704, according to the current performance parameter, it is determined whether it falls into the corresponding preset parameter interval. If the voltage value of the current open circuit voltage after charging falls into the preset parameter interval, and / or the voltage value of the current open circuit voltage after discharging falls into the preset parameter interval, the test result of the current open circuit voltage of the electrochromic device is qualified. The current open circuit voltage after charging can be tested, and / or the current open circuit voltage after discharging can be tested according to the consistency requirement of the electrochromic device by those skilled in the art.

[0136] In some other embodiments, in the step 7014, the current open circuit voltage of the electrochromic device after discharging can also be measured after resting until it is stable, in which case the step 7022 does not need to be performed. After the step 7014, the constant voltage discharging process is completed and resting, the electrochromic device has completed the charging and discharging activation, and at this time, the current open circuit voltage of the electrochromic device is measured, which can not only obtain a more accurate test result, but also save test time and improve test efficiency.

[0137] In yet another embodiment, the following steps can be performed on the electrochromic device: 7011. First constant voltage charging to the device to reach the second state, and resting until it is stable; 7012. First constant voltage discharging to the device to reach the first state, and resting until it is stable; 7013. Second constant voltage charging to the device to reach the second state, and resting until it is stable; 7014. Second constant voltage discharging to the device to reach the first state, and resting until it is stable; 7021. Third constant voltage charging to the device to reach the second state, and resting until it is stable, and measuring the current transmittance of the device; 7022. Third constant voltage discharging to the device to reach the first state, and resting until it is stable, and measuring the current transmittance of the device.

[0138] In the present embodiment, the step 701 comprises a first activation charging and discharging process and a second activation charging and discharging process, and N is 2, wherein the steps 7011 and 7012 are the first activation charging and discharging process performed on the electrochromic device, and the steps 7013 and 7014 are the second activation charging and discharging process performed on the electrochromic device.

[0139] The step 702 comprises detecting the current transmittance of the electrochromic device, wherein the step 7021 is detecting the current transmittance of the electrochromic device after the resting after the charging, and the step 7022 is detecting the current transmittance of the electrochromic device after the resting after the discharging. In the step 7021, after the third constant voltage charging to the device to reach the second state, and resting until it is stable, the current transmittance of the electrochromic device is measured. In the step 7022, after the third constant voltage discharging to the device to reach the first state, and resting until it is stable, the current transmittance of the electrochromic device is measured.

[0140] In the steps 703 and 704, according to the current performance parameter, it is determined whether it falls into the corresponding preset parameter interval. If the current transmittance value after the charging falls into the preset parameter interval, and / or the current transmittance value after the discharging falls into the preset parameter interval, the test result of the current transmittance of the electrochromic device is qualified. The current transmittance after the charging can be tested, and / or the current transmittance after the discharging can be tested according to the consistency requirement of the electrochromic device by those skilled in the art.

[0141] In some other embodiments, in the step 7014, the current transmittance of the electrochromic device after the discharging can also be measured after resting until it is stable, in which case the step 7022 does not need to be performed. After the constant voltage discharging process ends and rests, the electrochromic device has completed the charging and discharging activation, and at this time, the current transmittance of the electrochromic device is measured, which can not only obtain a more accurate test result, but also save test time and improve test efficiency.

[0142] It should be noted that in the above embodiment, in step 702, the current performance parameters of the electrochromic device are detected and obtained, the current performance parameters include at least one of the current transmittance, the current open circuit voltage, the current charging current, the current charging capacity, the current charging time, the current discharging current, the current discharging capacity and the current discharging time, when detecting, the electrochromic device which has completed the activation charging and discharging process needs to be charged or discharged, and after completing the charging or discharging, the current performance parameters of the electrochromic device are detected and obtained.

[0143] Step 705, when the current performance parameters do not fall into the corresponding preset parameter interval, the electrochromic device is subjected to the N+1th activation charging and discharging process.

[0144] Step 706, detecting and obtaining the calibrated current performance parameters, and comparing the calibrated current performance parameters with the preset parameter interval.

[0145] It should be noted that the purpose of the N+1th activation is to further adjust the performance of the electrochromic device, so that its performance parameters are as stable as possible, and it can meet the preset performance parameter interval. If the performance of the device still cannot reach the expectation after the Nth activation process, the N+1th activation process needs to be performed. Through further activation charging and discharging cycle, the performance of the device can be further adjusted to make it as close to the expected performance level as possible.

[0146] Further, after the above step 706, when the calibrated performance parameters fall into the corresponding preset parameter interval, the test result of the test parameter of the electrochromic device is qualified. When the calibrated performance parameters do not fall into the corresponding preset parameter interval, the test result of the test parameter of the electrochromic device is unqualified.

[0147] It should be noted that the current performance parameters of the electrochromic device in step 702 can be completed in one charging and discharging process, or can be completed in multiple charging and discharging processes. For example, after completing the Nth activation charging process of the electrochromic device, the electrochromic device is charged, the current charging current, the current charging capacity and the current charging time of the electrochromic device are measured, and the current transmittance after charging is measured after standing; the electrochromic device is discharged, the current discharging current, the current discharging capacity and the current discharging time of the electrochromic device are measured, and the current transmittance after discharging is measured after standing. The electrochromic device is disconnected from the power supply, and the current open circuit voltage of the electrochromic device is measured. In this embodiment, after completing the charging and discharging activation process, the performance parameters of the electrochromic device can be tested by one charging and discharging process, which improves the efficiency of the device consistency test.

[0148] In the embodiments of the present application, the preset parameter range includes a preset range of the current light transmittance, a preset range of the current open circuit voltage, a preset range of the current charge-discharge current, a preset range of the current charge-discharge capacity, and a preset range of the current charge-discharge time. The preset parameter range in the embodiments of the present application is obtained by detection after the activation charge-discharge treatment of the plurality of electrochromic devices. It should be noted that the person skilled in the art can set different preset parameter ranges according to the different structures and properties of the electrochromic devices, and the present application does not limit the test method for obtaining the preset parameter range of the electrochromic device. For example, the constant voltage applied in the above charging process can be determined as the upper limit value of the current open circuit voltage after charging; or the constant voltage applied in the above discharging process can be determined as the lower limit value of the current open circuit voltage after discharging. The constant voltage in the charging process and the constant voltage in the discharging process have opposite directions, for example, the charging voltage is 1.2V and the discharging voltage is -0.8V.

[0149] In an embodiment, in the test of the current light transmittance of the electrochromic device, for small devices, a small number of test positions can be selected, for example, 1 point, and the light transmittance at the center of the device is preferably tested. For large devices, the number of test positions can be increased, for example, 9 points are selected, and the 9 test positions form a 3x3 matrix distribution, and the center point is aligned with the overall center of the device, and the remaining 8 points are uniformly distributed at the edges of the device. In addition, in order to improve the accuracy of the test, the test position and the number of tests can be adjusted according to the shape and size of the device, and after the test is completed, it is evaluated whether the light transmittance at each position is within the standard range. In the bright state, the light transmittance of different devices is usually between 6-80%; while in the dark state, the light transmittance range of different devices is usually 0.01%-15%. The above test method fully considers the shape and properties of the device, which helps to ensure the accurate evaluation of the light transmittance parameter.

[0150] The application provides a test method for consistency of an electrochromic device. The electrochromic device is activated and subjected to charging and discharging treatment for the Nth time. Current performance parameters of the electrochromic device are detected and obtained, the current performance parameters including at least one of a current transmittance, a current open-circuit voltage, a current charging current, a current charging capacity, a current charging time, a current discharging current, a current discharging capacity and a current discharging time. Whether the current performance parameters fall within a corresponding preset parameter interval is determined according to the current performance parameters. When the current performance parameters fall within the corresponding preset parameter interval, the test result of the electrochromic device is qualified. When the current performance parameters do not fall within the corresponding preset parameter interval, the electrochromic device is activated and subjected to charging and discharging treatment for the N+1th time. The calibrated current performance parameters are detected and obtained, and the calibrated current performance parameters are compared with the preset parameter interval. In this way, the stability and consistency of the device are ensured through multiple activation charging and discharging treatment and performance parameter detection. The working state of the device is evaluated by measuring the performance parameters. For the device that does not reach the preset parameter interval, further activation treatment and calibration are performed to adjust the performance to meet the requirements. The above method helps to improve the production consistency of the device, ensures the stability of product quality, meets the preset performance indicators, and improves the reliability and stability of the electrochromic device in application.

[0151] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution. The execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the application.

[0152] Corresponding to the test method for consistency of the electrochromic device of the above embodiment, FIG. 8 shows a structural block diagram of a test device for consistency of the electrochromic device provided by the embodiments of the application. For ease of illustration, only parts related to the embodiments of the application are shown.

[0153] Referring to FIG. 8, the device 800 includes:

[0154] The controller 801 is configured to activate and subject the electrochromic device to charging and discharging treatment.

[0155] The tester 802 is configured to detect and obtain current performance parameters of the electrochromic device, the current performance parameters including at least one of a current transmittance, a current open-circuit voltage, a current charging current, a current charging capacity, a current charging time, a current discharging current, a current discharging capacity and a current discharging time.

[0156] In actual use, the test device for consistency of the electrochromic device provided by the embodiments of the application can be configured in any terminal device to execute the test method for consistency of the electrochromic device.

[0157] The application provides a testing device for consistency of an electrochromic device. The electrochromic device is subjected to activation charging and discharging treatment, and current performance parameters of the electrochromic device are detected and acquired, the current performance parameters including at least one of current light transmittance, current open-circuit voltage, current charging current, current charging capacity, current charging time, current discharging current, current discharging capacity and current discharging time. Thus, the active material in the electrochromic device is fully activated by the activation charging and discharging treatment, the reactivity of the electrochromic device is improved, and the consistency of the detected performance parameters of the electrochromic device can be improved.

[0158] In a possible implementation manner of the embodiment of the application, the controller 801 is specifically used for:

[0159] The electrochromic device is subjected to activation charging treatment, and the electrochromic device is subjected to activation discharging treatment.

[0160] Further, in another possible implementation manner of the embodiment of the application, the controller 801 is further used for:

[0161] The charging static treatment is that the electrochromic device is statically placed for a preset charging static duration after the activation charging treatment of the electrochromic device is stopped.

[0162] Further, in another possible implementation manner of the embodiment of the application, the controller 801 is further used for:

[0163] The discharging static treatment is that the electrochromic device is statically placed for a preset discharging static duration after the activation discharging treatment of the electrochromic device is stopped.

[0164] In the embodiment of the application, after the activation charging treatment of the electrochromic device is performed, the electrochromic device after the activation charging treatment is statically placed for a preset charging static duration, and after the activation discharging treatment of the electrochromic device is performed, the electrochromic device after the activation discharging treatment is statically placed for a preset discharging static duration. The device is statically placed to stabilize the device for a period of time before the performance parameters are measured, so that the performance of the electrochromic device is more stable, the measured performance parameters of the device are more accurate, and the consistency of the testing of various performance parameters of the electrochromic device by the device can be further improved.

[0165] Further, in another possible implementation manner of the embodiment of the application, the controller 801 is specifically used for:

[0166] The activation charging treatment is performed on the electrochromic device, the electrochromic device is statically placed for a preset charging static duration, the activation discharging treatment is performed on the electrochromic device, and the electrochromic device is statically placed for a preset discharging static duration, so as to complete the activation charging and discharging treatment.

[0167] The above steps are repeated N times, where N is a positive integer.

[0168] Further, in another possible implementation of the embodiment of the application, the controller 801 is further configured to:

[0169] The above steps are repeated twice, and the activation charge-discharge treatment includes a first activation charge-discharge treatment and a second activation charge-discharge treatment.

[0170] The first activation charge-discharge treatment includes a first activation charging treatment, a first charging standing treatment, a first activation discharging treatment, and a first discharging standing treatment, wherein the first discharging standing treatment is standing the electrochromic device for a first preset discharging standing time.

[0171] The second activation charge-discharge treatment includes a second activation charging treatment, a second charging standing treatment, a second activation discharging treatment, and a second discharging standing treatment, wherein the second discharging standing treatment is standing the electrochromic device for a second preset discharging standing time; and the first preset discharging standing time is less than the second preset discharging standing time.

[0172] In the embodiment of the application, the electrochromic device can be subjected to multiple activation charge-discharge treatments. Through repeated charge-discharge cycles, the reactivity of the electrochromic material can be optimized, the ion insertion and extraction process in the electrolyte can be improved, and the electrochemical performance of the device can be enhanced, which helps to improve the stability and reliability of the device performance, and further improves the consistency of the performance parameters of the electrochromic device tested by the device. In addition, by setting the first preset discharging standing time to be less than the second preset discharging standing time, the overall performance of the electrochromic device can be stabilized during the standing process, and the measured performance parameters are more accurate.

[0173] Further, in another possible implementation of the embodiment of the application, the controller 801 is specifically configured to:

[0174] The electrochromic device is subjected to an activation charging treatment until the electrochromic device reaches one of a charging cutoff current, a charging cutoff capacity, and a charging cutoff time, and the charging is stopped; and / or,

[0175] The electrochromic device is subjected to an activation discharging treatment until the electrochromic device reaches one of a discharging cutoff current, a discharging cutoff capacity, and a discharging cutoff time, and the discharging is stopped.

[0176] In the embodiments of the present application, in order to avoid the use of an external constant voltage in the process of activating the charging treatment or the discharging treatment of the electrochromic device, different cutoff conditions are set, part of the devices will trigger the cutoff current, and part of the devices will continue to charge or discharge until the cutoff capacity and the cutoff time are triggered. When the electrochromic device reaches one of the charging cutoff current, the charging cutoff capacity and the charging cutoff time, the charging is stopped, or when one of the discharging cutoff current, the discharging cutoff capacity and the discharging cutoff time is reached, the discharging is stopped. Thus, the overcharging or overdischarging problem caused by abnormal conditions of the electrochromic device can be avoided, thereby ensuring the stability of the electrochromic device, shortening the time of the activating charging and discharging treatment, improving the efficiency of the activating charging and discharging treatment, and further improving the consistency of the performance parameters of the electrochromic device tested by the device.

[0177] Further, in another possible implementation manner of the embodiments of the present application, the controller 801 is specifically used for:

[0178] activating the charging treatment of the electrochromic device, and stopping the charging when the current charging current of the electrochromic device is equal to the charging cutoff current; and / or,

[0179] activating the discharging treatment of the electrochromic device, and stopping the discharging when the current discharging current of the electrochromic device is equal to the discharging cutoff current.

[0180] Further, in another possible implementation manner of the embodiments of the present application, the controller 801 is specifically used for:

[0181] activating the charging treatment of the electrochromic device, and continuing to charge the electrochromic device until the current charging capacity of the electrochromic device is equal to the charging cutoff capacity, and stopping the charging when the current charging current of the electrochromic device is higher than the charging cutoff current; and / or,

[0182] activating the discharging treatment of the electrochromic device, and continuing to discharge the electrochromic device until the current discharging capacity of the electrochromic device is equal to the discharging cutoff capacity, and stopping the discharging when the current discharging current of the electrochromic device is higher than the discharging cutoff current.

[0183] Further, in another possible implementation manner of the embodiments of the present application, the controller 801 is specifically used for:

[0184] activating the charging treatment of the electrochromic device, and continuing to charge the electrochromic device until the current charging time of the electrochromic device is equal to the charging cutoff time, and stopping the charging when the current charging current of the electrochromic device is higher than the charging cutoff current; and / or,

[0185] The electrochromic device is subjected to an activation discharge process. When a current discharge current of the electrochromic device is higher than a discharge cutoff current, the electrochromic device continues to be discharged until a current discharge time of the electrochromic device is equal to a discharge cutoff time, and the discharge is stopped.

[0186] Further, in another possible implementation of the embodiment of the application, the controller 801 is further configured to:

[0187] The electrochromic device is subjected to N times of activation charge-discharge processes, where N is a positive integer.

[0188] The tester 802 is further configured to:

[0189] The current performance parameter of the electrochromic device is measured, and it is determined whether the current performance parameter falls within a corresponding preset parameter interval.

[0190] When the current performance parameter falls within the corresponding preset parameter interval, the test result of the electrochromic device is qualified.

[0191] Further, in another possible implementation of the embodiment of the application, the controller 801 is further configured to:

[0192] The electrochromic device is subjected to N times of activation charge-discharge processes, where N is a positive integer.

[0193] The tester 802 is further configured to measure the current performance parameter of the electrochromic device, and determine whether the current performance parameter falls within a corresponding preset parameter interval.

[0194] The controller 801 is further configured to, when the current performance parameter does not fall within the corresponding preset parameter interval, perform an (N+1)th activation charge-discharge process on the electrochromic device.

[0195] The tester 802 is further configured to detect and acquire the calibrated current performance parameter, and compare the calibrated current performance parameter with the preset parameter interval.

[0196] In the embodiment of the application, it should be noted that the purpose of the (N+1)th activation is to further adjust the performance of the electrochromic device, so that the performance parameter is as stable as possible, and the electrochromic device can meet the preset performance parameter interval. If the performance of the device still cannot meet the expectation after the Nth activation process, the (N+1)th activation process needs to be performed. Through the further activation charge-discharge cycle, the performance of the device can be further adjusted to be as close as possible to the expected performance level. Thus, by determining whether the performance parameter tested after the multiple activation charge-discharge processes is within the preset parameter interval, the performance of the device can be further adjusted, and the consistency of the device in testing various performance parameters of the electrochromic device is improved.

[0197] In the embodiments of the present application, the controller 801 can include a driving circuit for applying voltage or current to the electrochromic device, the electrochromic device can be placed in a test box or a circulation cabinet containing the controller 801 or a laboratory for charging and discharging treatment, the tester 802 can be a spectrum tester and / or an electrochemical tester, and through cooperation of the controller 801 and the tester 802, the performance parameters of the electrochromic device can be tested.

[0198] In order to achieve the above-mentioned embodiments, the present application further provides a terminal device.

[0199] FIG. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

[0200] As shown in FIG. 9, the terminal device 200 includes a memory 210 and at least one processor 220, a bus 230 connecting different components (including the memory 210 and the processor 220), and the memory 210 stores a computer program, and when the processor 220 executes the program, the electrochromic device consistency test method according to the embodiments of the present application is realized.

[0201] The bus 230 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to industry standard architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video electronics standards association (VESA) local bus, and peripheral component interconnect (PCI) bus.

[0202] The terminal device 200 typically includes a variety of electronic device readable media. These media can be any available media that can be accessed by the terminal device 200, including volatile and non-volatile media, removable and non-removable media.

[0203] The memory 210 can also include computer system readable media in the form of volatile memory, such as random access memory (RAM) 240 and / or cache memory 250. The terminal device 200 can further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 260 can be used for reading from and writing to non-removable, non-volatile magnetic media (not shown in FIG. 9), such as a hard disk. Although not specifically shown, a magnetic disk controller (not shown) can also be used to read from and write to a removable, non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk controller (not shown) can be used to read from and write to a removable, non-volatile optical disk (such as a CD-ROM, DVD-ROM or other optical media). In these instances, the disk controller and the optical disk controller can be used in conjunction with a disk drive or disk recorders, respectively. In these instances, the disk controller and the optical disk controller can also be used in conjunction with a disk drive or disk recorders, respectively. These devices can be connected to the bus 230 by one or more data media interfaces. The memory 210 can include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the application.

[0204] Program / utility 280 having a set (at least one) of program modules 270 can be stored in memory 210 by way of example, and not limitation, including an operating system, one or more application programs, other program modules, and program data, each or some combination thereof, can include implementation of the network environment. Program modules 270 generally carry out the functions and / or methodologies of embodiments of the application as described herein.

[0205] Terminal device 200 can also communicate with one or more external devices 290 such as a keyboard, a pointing device, a display 291, etc.; one or more devices that enable a user to interact with terminal device 200; and / or one or more devices that enable terminal device 200 to communicate with one or more other computing devices. Such communication can be via input / output (I / O) interfaces 292. Further, terminal device 200 can communicate with one or more networks, such as a local area network (LAN), a wide area network (WAN), and / or the public network, such as the Internet, via network adapter 293. As depicted, network adapter 293 communicates with the other components of terminal device 200 via bus 230. It should be appreciated that although not shown, other hardware and / or software modules could be used in conjunction with terminal device 200. Such as, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc.

[0206] Processor 220 performs functions of various embodiments of the application by executing program code stored in memory 210.

[0207] It should be noted that the implementation process and technical principles of the terminal device in this embodiment are consistent with the above-mentioned explanation of the test method for the consistency of the electrochromic device of the embodiments of the present application, and will not be repeated here.

[0208] The computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps in each of the above method embodiments.

[0209] The computer program product is provided in the embodiments of the present application, and when the computer program product is run on the terminal device, the terminal device is caused to implement the steps in each of the above method embodiments.

[0210] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the above embodiment methods can be completed by a computer program instructing related hardware, and the computer program can be stored in a computer readable storage medium. The computer program is executed by a processor to implement the steps in each of the above method embodiments. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or some intermediate forms. The computer readable medium at least includes any entity or device capable of carrying the computer program code to the photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. For example, a U disk, a mobile hard disk, a magnetic disk or an optical disk, etc. In some jurisdictions, according to legislation and patent practice, the computer readable medium cannot be an electrical carrier signal and a telecommunications signal.

[0211] In the above embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0212] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0213] In the embodiments provided in this application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0214] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0215] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A method of testing the consistency of an electrochromic device, characterized in that, The method comprises: activating the electrochromic device by charging and discharging; detecting and obtaining current performance parameters of the electrochromic device, the current performance parameters comprising at least one of current transmittance, current open-circuit voltage, current charging current, current charging capacity, current charging time, current discharging current, current discharging capacity and current discharging time.

2. The method of claim 1, wherein, The activating the electrochromic device by charging and discharging comprises: activating the electrochromic device by charging and activating the electrochromic device by discharging.

3. The method of claim 2, wherein, After the activating the electrochromic device by charging, the method further comprises: a charging resting process, wherein the charging resting process is to rest the electrochromic device for a preset charging resting time after stopping the activating the electrochromic device by charging.

4. The method of claim 3, wherein, After the activating the electrochromic device by discharging, the method further comprises: a discharging resting process, wherein the discharging resting process is to rest the electrochromic device for a preset discharging resting time after stopping the activating the electrochromic device by discharging.

5. The method of claim 4, wherein, The activating the electrochromic device by charging and discharging further comprises: activating the electrochromic device by charging, resting the electrochromic device for the preset charging resting time, activating the electrochromic device by discharging, and resting the electrochromic device for the preset discharging resting time to complete the activating the electrochromic device by charging and discharging; repeating the above steps for N times, wherein N is a positive integer.

6. The method of claim 5, wherein, When the above steps are repeated for 2 times, the activating the electrochromic device by charging and discharging comprises a first activating the electrochromic device by charging and discharging and a second activating the electrochromic device by charging and discharging, wherein the first activating the electrochromic device by charging and discharging comprises a first activating the electrochromic device by charging, a first charging resting process, a first activating the electrochromic device by discharging and a first discharging resting process, and the first discharging resting process is to rest the electrochromic device for a first preset discharging resting time. The second activating the electrochromic device by charging and discharging comprises a second activating the electrochromic device by charging, a second charging resting process, a second activating the electrochromic device by discharging and a second discharging resting process, and the second discharging resting process is to rest the electrochromic device for a second preset discharging resting time; and the first preset discharging resting time is less than the second preset discharging resting time.

7. The method of claim 2, wherein, The activating the electrochromic device by charging and discharging further comprises: activating the electrochromic device by charging until one of a charging cut-off current, a charging cut-off capacity and a charging cut-off time of the electrochromic device is reached, and stopping charging; and / or activating the electrochromic device by discharging until one of a discharging cut-off current, a discharging cut-off capacity and a discharging cut-off time of the electrochromic device is reached, and stopping discharging.

8. The method of claim 7, wherein, The activating the electrochromic device by charging and discharging further comprises: activating the electrochromic device, and stopping charging when the current charging current of the electrochromic device is equal to the charging cutoff current; and / or, activating the electrochromic device, and stopping discharging when the current discharging current of the electrochromic device is equal to the discharging cutoff current.

9. The method of claim 8, wherein, The method further comprises: activating the electrochromic device, and stopping charging when the current charging current of the electrochromic device is higher than the charging cutoff current, and continuing charging the electrochromic device until the current charging capacity of the electrochromic device is equal to the charging cutoff capacity, and stopping charging; and / or, activating the electrochromic device, and stopping discharging when the current discharging current of the electrochromic device is higher than the discharging cutoff current, and continuing discharging the electrochromic device until the current discharging capacity of the electrochromic device is equal to the discharging cutoff capacity, and stopping discharging.

10. The method of claim 8, wherein, The method further comprises: activating the electrochromic device, and stopping charging when the current charging current of the electrochromic device is higher than the charging cutoff current, and continuing charging the electrochromic device until the current charging time of the electrochromic device is equal to the charging cutoff time, and stopping charging; and / or, activating the electrochromic device, and stopping discharging when the current discharging current of the electrochromic device is higher than the discharging cutoff current, and continuing discharging the electrochromic device until the current discharging time of the electrochromic device is equal to the discharging cutoff time, and stopping discharging.

11. The method of claim 1, wherein, The method further comprises: activating the electrochromic device for N times, wherein N is a positive integer; measuring the current performance parameter of the electrochromic device, and determining whether the current performance parameter falls into a corresponding preset parameter interval according to the current performance parameter; when the current performance parameter falls into the corresponding preset parameter interval, the test result of the electrochromic device is qualified.

12. The method of claim 1, wherein, After detecting and acquiring the performance parameter of the electrochromic device, the method further comprises: activating the electrochromic device for N times, wherein N is a positive integer; measuring the current performance parameter of the electrochromic device, and determining whether the current performance parameter falls into a corresponding preset parameter interval according to the current performance parameter; when the current performance parameter does not fall into the corresponding preset parameter interval, activating the electrochromic device for the (N+1)th time; detecting and acquiring a calibrated current performance parameter, and comparing the calibrated current performance parameter with the preset parameter interval.

13. A device for testing the consistency of electrochromic devices, characterized in that it comprises: comprises: a controller configured to activate the electrochromic device for charging and discharging; a tester configured to detect and acquire a current performance parameter of the electrochromic device, the current performance parameter comprising at least one of a current transmittance, a current open circuit voltage, a current charging current, a current charging capacity, a current charging time, a current discharging current, a current discharging capacity, and a current discharging time.

14. The test device of claim 13, wherein, The controller is specifically used for: activating the electrochromic device for charging treatment, and activating the electrochromic device for discharging treatment.

15. The test device of claim 14, wherein, The controller is further used for: charging static treatment, which is to statically place the electrochromic device for a preset charging static time after stopping the activating charging treatment.

16. The test device of claim 15, wherein, The controller is further used for: discharging static treatment, which is to statically place the electrochromic device for a preset discharging static time after stopping the activating discharging treatment.

17. The test device of claim 16, wherein, The controller is specifically used for: activating the electrochromic device for charging treatment, statically placing the electrochromic device for the preset charging static time, activating the electrochromic device for discharging treatment, and statically placing the electrochromic device for the preset discharging static time to complete the activating charging and discharging treatment; The above step is repeatedly executed for N times, where N is a positive integer.

18. The test device of claim 17, wherein, The controller is further used for: the activating charging and discharging treatment includes a first activating charging and discharging treatment and a second activating charging and discharging treatment, and the above step is repeatedly executed for 2 times; The first activating charging and discharging treatment includes a first activating charging treatment, a first charging static treatment, a first activating discharging treatment, and a first discharging static treatment, where the first discharging static treatment is to statically place the electrochromic device for a first preset discharging static time; The second activating charging and discharging treatment includes a second activating charging treatment, a second charging static treatment, a second activating discharging treatment, and a second discharging static treatment, where the second discharging static treatment is to statically place the electrochromic device for a second preset discharging static time; and the first preset discharging static time is less than the second preset discharging static time.

19. The test device of claim 14, wherein, The controller is specifically used for: activating the electrochromic device for charging treatment until one of a charging cutoff current, a charging cutoff capacity, and a charging cutoff time of the electrochromic device is reached, and stopping charging; and / or, activating the electrochromic device for discharging treatment until one of a discharging cutoff current, a discharging cutoff capacity, and a discharging cutoff time of the electrochromic device is reached, and stopping discharging.

20. The test device of claim 19, wherein, The controller is specifically used for: activating the electrochromic device for charging treatment, and stopping charging when the current charging current of the electrochromic device is equal to the charging cutoff current; and / or, activating the electrochromic device for discharging treatment, and stopping discharging when the current discharging current of the electrochromic device is equal to the discharging cutoff current.

21. The test device of claim 20, wherein, The controller is specifically used for: activating the electrochromic device for charging treatment, and continuing to charge the electrochromic device until the current charging capacity of the electrochromic device is equal to the charging cutoff capacity when the current charging current of the electrochromic device is higher than the charging cutoff current; and / or, activating the electrochromic device for discharging treatment, and continuing to discharge the electrochromic device until the current discharging capacity of the electrochromic device is equal to the discharging cutoff capacity when the current discharging current of the electrochromic device is higher than the discharging cutoff current. The electrochromic device is subjected to an activation discharge process, when the current discharge current of the electrochromic device is higher than the discharge cutoff current, the electrochromic device continues to discharge until the current discharge capacity of the electrochromic device is equal to the discharge cutoff capacity, and the discharge is stopped.

22. The test device of claim 20, wherein, The controller is specifically used for: The electrochromic device is subjected to an activation charging process, when the current charging current of the electrochromic device is higher than the charging cutoff current, the electrochromic device continues to charge until the current charging time of the electrochromic device is equal to the charging cutoff time, and the charging is stopped; and / or, The electrochromic device is subjected to an activation discharge process, when the current discharge current of the electrochromic device is higher than the discharge cutoff current, the electrochromic device continues to discharge until the current discharge time of the electrochromic device is equal to the discharge cutoff time, and the discharge is stopped.

23. The test device of claim 13, wherein, The controller is further used for: The electrochromic device is subjected to N activation charging and discharging processes, where N is a positive integer; The tester is further used for: Measuring the current performance parameter of the electrochromic device, and determining whether the current performance parameter falls into a corresponding preset parameter interval according to the current performance parameter; When the current performance parameter falls into the corresponding preset parameter interval, the test result of the electrochromic device is qualified.

24. The test device of claim 13, wherein, The controller is further used for: The electrochromic device is subjected to N activation charging and discharging processes, where N is a positive integer; The tester is further used for measuring the current performance parameter of the electrochromic device, and determining whether the current performance parameter falls into a corresponding preset parameter interval according to the current performance parameter; The controller is further used for, when the current performance parameter does not fall into the corresponding preset parameter interval, performing an N+1 activation charging and discharging process on the electrochromic device; The tester is further used for detecting and acquiring a calibrated current performance parameter, and comparing the calibrated current performance parameter with the preset parameter interval.

25. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein, The processor executes the computer program to implement the method of any one of claims 1-12. 26.A computer readable storage medium, storing a computer program, characterized in that, The computer program is executed by the processor to implement the method of any one of claims 1-12.

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