A device driving apparatus and driving method for a printed electrochromic device

Abstract

The application provides a printed electrochromic device driving device and driving method, comprising a light emitting structure for providing a light source, a brightness detection structure and an interaction structure, the light emitting structure and the detection structure are oppositely arranged on two sides of the electrochromic device, the interaction structure is connected with the detection structure, and the brightness detection structure is internally provided with a brightness detection sensor for detecting the light transmittance of the electrochromic device. The device maintains the coloring state of the electrochromic device by adopting a timing pressurizing mode instead of continuously pressurizing the electrochromic device, thereby saving the electric quantity, avoiding damage of the electrochromic device due to excessive pressurization, ensuring the service life of the device and reducing the electric quantity consumption.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of printed electronics, and particularly relates to a printed electrochromic device driving device and driving method. BACKGROUND

[0002] In the prior art, an electrochromic device can undergo reversible color change under the action of an applied electric field. By applying a certain voltage to both sides of the electrochromic layer of the electrochromic device, it can be switched between transparent and colored states. The electrochromic device in the colored state will gradually fade in color and eventually become transparent after the voltage on both sides of the electrochromic layer is removed. To maintain the colored state, a continuous voltage must be applied to both sides of the electrochromic layer. However, long-term voltage application can cause ions in the electrolyte of the device to penetrate the electrode layer and react with the electrode layer material, reducing the service life of the electrochromic device and even causing damage to the electrochromic device. SUMMARY

[0003] The present application aims to provide a printed electrochromic device driving device and driving method, which aims to solve the problem of reduced service life or even damage of the electrochromic device caused by excessive pressure in the prior art.

[0004] The present application is implemented as follows: a printed electrochromic device driving device, comprising a light-emitting structure for providing a light source, a brightness detection structure, and an interaction structure, the light-emitting structure and the detection structure being oppositely arranged on both sides of the electrochromic device, the interaction structure being connected to the detection structure, and the brightness detection structure being provided with a brightness detection sensor for detecting the light transmittance of the electrochromic device.

[0005] A further technical solution of the present application is that the light-emitting structure comprises a light-emitting element, a lower cover, and a first magnet, the light-emitting element being arranged in close proximity to one side of the electrochromic device, the lower cover being arranged on the top of the light-emitting element, and the first magnet being arranged on the inner side of the lower cover.

[0006] A further technical solution of the present application is that the brightness detection structure comprises a PCB board, an upper cover, and a mounting plate, the mounting plate being arranged on the other side of the electrochromic device, the PCB board being arranged on the mounting plate, and the upper cover being arranged on the top of the PCB board.

[0007] A further technical solution of the present application is that a second magnet is arranged on the mounting plate, and the second magnet is magnetically connected to the first magnet.

[0008] A further technical solution of the present application is that the brightness detection sensor is arranged on the PCB board, a through hole is arranged on the mounting plate, the brightness detection sensor is arranged at the through hole and in close proximity to the electrochromic device, and the brightness detection sensor is oppositely arranged with the light-emitting element.

[0009] A further technical solution of the present application is that the PCB is provided with driving devices for providing voltage for the electrochromic device, and the PCB is provided with a control device connected with the driving devices, the luminance detection sensor and the light emitting element.

[0010] A further technical solution of the present application is that the two sides of the PCB are respectively provided with a first interface and a second interface, the first interface and the second interface are connected with the control device, the first interface is connected with the electrochromic device, and the second interface is connected with the interactive device.

[0011] A further technical solution of the present application is that the interactive structure includes a connecting plate, a first button for turning on or resetting the electrochromic device, a second button for deepening the color of the electrochromic device, and a third button for lightening the color of the electrochromic device, the first button, the second button and the third button are arranged on the connecting plate, and the connecting plate is connected with the second interface.

[0012] Another object of the present application is to provide a driving method of a printed electrochromic device driving device, comprising the following steps:

[0013] Step S1: pressing the first button, the control device receives the signal, turns on the luminance detection sensor and the light emitting element, and sends an instruction to the driving device, the driving device applies a forward voltage to the electrochromic device, the luminance detection sensor measures the brightness of the light emitting element in real time and sends data to the control device, and the control device calculates the transmittance according to the data of the luminance detection sensor;

[0014] Step S2: if the transmittance remains unchanged within 3-5s, the driving device stops applying voltage to the electrochromic device, the electrochromic device fades, the transmittance is increased to a set threshold value, and the control device records the time t1 from fading of the electrochromic device to applying voltage to the set threshold value;

[0015] Step S3: when the transmittance increases to the set threshold value, the control device sends an instruction to control the driving device to apply voltage to the electrochromic device to restore the state of the lowest transmittance, and the control device records the time t2 from the set threshold value to the lowest transmittance;

[0016] Step S4: the control device stops applying voltage to the electrochromic device, after t1 time, step S3 is executed, after t2 time, step S2 is executed, and then step S4 is repeated.

[0017] The further technical scheme of the present application is that after the step S3 ends, the light emitting part and the brightness detection sensor are not turned on again unless the first button is pressed again for resetting or the second button and the third button are pressed.

[0018] The present application has the beneficial effect that the device maintains the coloring state of the electrochromic device by adopting the way of timing pressurization instead of continuously pressurizing the electrochromic device, thereby saving the electric quantity and avoiding damage of the electrochromic device due to excessive pressurization, ensuring the service life of the device and reducing the consumption of electric quantity. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is the exploded view of the present application;

[0020] Fig. 2 is the schematic view of the PCB of the present application;

[0021] Fig. 3 is the main flow chart of the driving method of the present application.

[0022] Reference signs: 1-electrochromic device, 2-light emitting part, 3-PCB, 4-upper cover, 5-mounting plate, 6-through hole, 7-second magnet, 8-lower cover, 9-first magnet, 10-connection plate, 11-first button, 12-second button, 13-third button, 14-brightness detection sensor, 15-control device, 16-driving device, 17-first interface, 18-second interface. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific part.

[0024] Figs. 1-3 A printed electrochromic device driving device provided by the present application is shown, which comprises a light emitting structure for providing a light source, a brightness detection structure and an interactive structure, the light emitting structure and the detection structure are oppositely arranged on both sides of the electrochromic device 1, the interactive structure is connected with the detection structure, and the brightness detection structure is provided with a brightness detection sensor 14 for detecting the light transmittance of the electrochromic device 1.

[0025] Preferably, the light-emitting structure comprises a light-emitting piece 2, a lower cover 8 and a first magnet 9, the light-emitting piece 2 is arranged close to one side of the electrochromic device 1, the lower cover 8 is arranged on the top of the light-emitting piece 2, and the first magnet 9 is arranged on the inner side of the lower cover 8.

[0026] Preferably, the brightness detection structure comprises a PCB board 3, an upper cover 4 and a mounting plate 5, the mounting plate 5 is arranged on the other side of the electrochromic device 1, the PCB board 3 is arranged on the mounting plate 5, and the upper cover 4 is arranged on the top of the PCB board 3.

[0027] Preferably, a second magnet 7 is arranged on the mounting plate 5, and the second magnet 7 is magnetically connected with the first magnet 9.

[0028] Preferably, the brightness detection sensor 14 is arranged on the PCB board 3, a through hole 6 is arranged on the mounting plate 5, the brightness detection sensor 14 is arranged at the through hole 6 and close to the electrochromic device 1, and the brightness detection sensor 14 is arranged opposite to the light-emitting piece 2.

[0029] Preferably, the PCB board 3 is provided with a driving device 16 for providing voltage for the electrochromic device 1, the PCB board 3 is provided with a control device 15, and the control device 15 is connected with the driving device 16, the brightness detection sensor 14 and the light-emitting piece 2 respectively.

[0030] Preferably, the two sides of the PCB board 3 are respectively provided with a first interface 17 and a second interface 18, the first interface 17 and the second interface 18 are connected with the control device 15, the first interface 17 is connected with the electrochromic device 1, and the second interface 18 is connected with the interaction device.

[0031] Preferably, the interaction structure comprises a connecting plate 10, a first button 11 for turning on or resetting the electrochromic device 1, a second button 12 for deepening the color of the electrochromic device 1 and a third button 13 for lightening the color of the electrochromic device 1, the first button 11, the second button 12 and the third button 13 are arranged on the connecting plate 10, and the connecting plate 10 is connected with the second interface 18.

[0032] The application further provides a driving method of the driving device of the printed electrochromic device, comprising the following steps:

[0033] Step S1: Pressing the first button 11, the control device 15 turns on the brightness detection sensor 14 and the light-emitting element 2 after receiving the signal, and sends a command to the driving device 16. The driving device 16 applies a forward voltage to the electrochromic device 1. The brightness detection sensor 14 measures the brightness of the light-emitting element 2 in real time and sends the data to the control device 15. The control device 15 calculates the transmittance based on the data from the brightness detection sensor 14.

[0034] Step S2: If the transmittance remains unchanged within 3-5 seconds, the driving device 16 stops applying pressure to the electrochromic device 1, the electrochromic device 1 fades, and the transmittance is increased to a set threshold value. The control device 15 records the time t1 from the time the electrochromic device 1 fades to the time the transmittance is increased to the set threshold value.

[0035] Step S3: When the transmittance reaches the set threshold, the control device 15 issues an instruction to control the driving device 16 to pressurize the electrochromic device 1 to restore it to the lowest transmittance state. The control device 15 records the time t2 from the set threshold to the restoration of the lowest transmittance;

[0036] Step S4: the control device 15 stops applying pressure to the electrochromic device 1, and executes step S3 after time t1, and executes step S2 after time t2, and then repeats step S4.

[0037] Preferably, after step S3 is completed, unless the first button 11 is pressed again to perform a reset operation, or the second button 12 and the third button 13 are pressed, the light emitting element 2 and the brightness detection sensor 14 are no longer turned on.

[0038] The present invention provides a printed electrochromic device driving device and driving method. The device maintains the coloring state of the electrochromic device 1 by using a timed pressurization method instead of continuously pressurizing the electrochromic device 1. While saving power, it also avoids damage to the electrochromic device 1 due to excessive pressurization, thereby ensuring the service life of the device and reducing power consumption.

[0039] The device is provided with the light emitting structure and the brightness detection structure on both sides of the electrochromic device 1, and the two structures are tightly attached by the magnetic attraction between the first magnet 9 and the second magnet 7, so that the external light cannot enter or the internal light cannot be emitted. The light emitting element 2 provides a light source with constant brightness, and the light emitted by the light emitting element 2 will be weakened after passing through the electrochromic device 1. The light intensity of the light passing through the electrochromic device 1 is detected by the brightness detection sensor 14, and the data is fed back to the control device 15. The upper cover 4 and the lower cover 8 are lightproof shells, which can avoid affecting the detection data. The through hole 6 is arranged on the mounting plate 5, so that the brightness detection sensor 14 can receive the light emitted by the light emitting element 2. The light emitting element 2 is preferably an LED lamp bead. The control device 15, the driving device 16 and the brightness detection sensor 14 are integrated on the PCB 3.

[0040] The coloring and discoloring of the electrochromic device 1 are controlled by the positive and negative polarities of the two electrodes on the device. The discoloring of the device in the coloring state only needs to reverse the electrodes. The interactive structure is a touch switch film made of screen printing, which can be attached to the electrochromic device 1. Three buttons are arranged in the interactive structure. Pressing the first button 11 realizes the start or reset of the electrochromic device. Pressing the second button 12 reduces the transmittance of the electrochromic device to the next state, so that the color is deeper. Pressing the third button 13 increases the transmittance of the electrochromic device to the next state, so that the color is lighter. After pressing the first button 11 and the second button 12, the control device 15 receives the signal and controls the light emitting element 2 and the brightness detection sensor 14 to start working. The brightness detection sensor 14 feeds back the transmittance data of the electrochromic device 1 to the control device 15 at this time. The control device 15 judges the current state of the electrochromic device 1 and issues an instruction to control the driving device 16 to apply pressure or reverse voltage to the electrochromic device 1 until the transmittance is reduced or increased to the next state. The state of the electrochromic device 1 can be stepless adjustment or step adjustment. At the same time, the reset function of the first button 11 can also be used to calibrate the data of the electrochromic device 1 recorded by the control device 15.

[0041] The electrochromic device 1 needs to be adjusted by pressure. If the pressure is continuously applied, the electrochromic device 1 will be damaged. Therefore, in the present application, an automatic color changing driving method is designed by recording the color changing time of the electrochromic device 1. The whole driving process is explained below by way of an embodiment.

[0042] When the first button 11 is pressed, the control device 15 receives the signal and turns on the luminance detection sensor 14 and the light emitting part 2, and the driving device 16 starts to apply a constant 3V positive voltage to the electrochromic device 1 (the voltage is determined by the electrochromic device 1 and can be adjusted between 1-5V). As the voltage time changes, the color of the electrochromic device 1 gradually deepens, and the transmittance gradually decreases. The voltage time and the transmittance data are one-to-one corresponding, which are monitored in real time by the luminance detection sensor 14 and recorded into the control device 15. As the voltage time increases, the color transmittance of the electrochromic device 1 gradually decreases, and the transmittance remains unchanged (i.e. the data of the luminance detection sensor 14 does not change) within 3-5s, and the driving device 16 stops applying voltage to the electrochromic device 1. After the voltage is removed, the electrochromic device 1 cannot maintain the colored state and will gradually fade, and when the transmittance increases to a threshold value (increases by 5%-10%), the control device 15 will issue an instruction to control the driving device 16 to apply voltage to the electrochromic device 1 to restore the lowest transmittance state. The first time the electrochromic device 1 fades to the threshold value and the process of reapplying voltage to restore the lowest transmittance involves the light emitting part 2 and the luminance detection sensor 14, and the time t1 and t2 of the two processes are recorded by the control device 15. After that, the light emitting part 2 and the luminance detection sensor 14 do not need to participate in the process of maintaining the electrochromic device 1, and only the control device 15 needs to issue instructions to the driving device 16 to control whether the driving device supplies power to the electrochromic device 1. After the transmittance is at the lowest value, the control device 15 controls the driving device 16 to stop applying voltage, and after t1 time, the transmittance returns to the threshold point, then the driving device applies voltage, and after t2 time, the transmittance returns to the lowest value. This cycle can control the transmittance to dynamically change within the range of the lowest transmittance to the threshold value, and the electrochromic device 1 is in the best working state. If the transmittance is not satisfactory, the first button 11 can be pressed again to reset, and the second button 12 and the third button 13 can be used to adjust the color depth of the electrochromic device 1, and the luminance detection sensor 14 and the light emitting part 2 can be used to detect and adjust the transmittance until the best working state is adjusted.

[0043] The above method can use the control device 15 and the driving device 16 to automatically adjust the color of the electrochromic device 1, and avoid continuous voltage application to the electrochromic device 1, thereby prolonging the service life of the device. After the first use, the light emitting part 2 and the luminance detection sensor 14 do not need to be turned on unless the reset operation is performed, and long-time turning on of the light source will cause unnecessary waste of power. Then, the coloring state of the electrochromic device 1 is maintained by using a timing voltage application method.

[0044] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A printed electrochromic device drive apparatus, characterized by comprising: a printed electrochromic device; a power supply; a drive circuit; and a printed electrochromic device drive program. The application relates to a printing electrochromic device driving method, which comprises the following steps: S1, pressing a first button, the control device receives a signal, opens a brightness detection sensor and a light-emitting piece, and sends an instruction to a driving device; the driving device applies a forward voltage to the electrochromic device; the brightness detection sensor measures the brightness of the light-emitting piece in real time and sends data to the control device; and the control device calculates the transmittance according to the data of the brightness detection sensor; S2, if the transmittance remains unchanged within 3-5s, the driving device stops applying voltage to the electrochromic device, the electrochromic device fades, the transmittance is increased to a set threshold, and the control device records the time t1 from fading of the electrochromic device to applying voltage to the set threshold; S3, when the transmittance is increased to the set threshold, the control device sends an instruction to control the driving device to apply voltage to the electrochromic device to restore the state of the lowest transmittance, and the control device records the time t2 from the set threshold to the state of the lowest transmittance; and S4, the control device stops applying voltage to the electrochromic device, step S3 is executed after the time t1, step S2 is executed after the time t2, and then step S4 is repeated. The light-emitting structure comprises a lower cover and a first magnet, the light-emitting piece is arranged close to one side of the electrochromic device, the lower cover is arranged on the top of the light-emitting piece, and the first magnet is arranged on the inner side of the lower cover. The brightness detection structure comprises an upper cover and a mounting plate, the mounting plate is arranged on the other side of the electrochromic device, the PCB plate is arranged on the mounting plate, and the upper cover is arranged on the top of the PCB plate. The mounting plate is provided with a second magnet which is magnetically connected with the first magnet. The brightness detection sensor is arranged on the PCB plate, the mounting plate is provided with a through hole, the brightness detection sensor is arranged close to the electrochromic device at the through hole, and the brightness detection sensor is arranged opposite to the light-emitting piece.

2. A printed electrochromic device driving apparatus according to claim 1, wherein The two sides of the PCB plate are respectively provided with a first interface and a second interface, the first interface and the second interface are connected with the control device, the first interface is connected with the electrochromic device, and the second interface is connected with the interactive structure.

3. A device driving apparatus of a printed electrochromic device according to claim 2, wherein ​ 4. A device driving apparatus of a printed electrochromic device according to claim 3, wherein ​ 5. A printed electrochromic device driving apparatus according to claim 4, wherein ​ 6. The printed electrochromic device driving apparatus according to claim 1, wherein ​ 7. A printed electrochromic device driving apparatus according to claim 6, wherein The interaction structure comprises a connecting plate, a second button for deepening the color of the electrochromic device, and a third button for lightening the color of the electrochromic device, the first button, the second button and the third button are arranged on the connecting plate, and the connecting plate is connected with the second interface.

8. A printed electrochromic device driving apparatus according to claim 7, wherein After the step S3, unless the first button is pressed again for resetting or the second button and the third button are pressed, the light-emitting element and the brightness detection sensor are not turned on again.

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