CN114355693B - Charge compensation device for electrochromic device and control method - Google Patents
Charge compensation device for electrochromic device and control method Download PDFInfo
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- CN114355693B CN114355693B CN202111586266.5A CN202111586266A CN114355693B CN 114355693 B CN114355693 B CN 114355693B CN 202111586266 A CN202111586266 A CN 202111586266A CN 114355693 B CN114355693 B CN 114355693B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a charge compensation device and a control method for an electrochromic device, wherein the charge compensation device comprises a Hall sensor, a transmittance sensor and a charging module, wherein the Hall sensor and the transmittance sensor are respectively connected with a test element, the test element is the electrochromic device, the Hall sensor and the transmittance sensor detect the transmittance and residual voltage of the electrochromic device, then a test signal is output to the charging module, and if the transmittance exceeds a specified threshold value or the residual voltage is greater than 0, the charging module performs charge compensation on the electrochromic device until no charge accumulation and fading of the electrochromic device are complete. The invention effectively solves the problems of fading residue and charge accumulation of the electrochromic device, thereby prolonging the service life of the electrochromic device.
Description
Technical Field
The invention relates to the technical field of electrochromic, in particular to a charge compensation device for an electrochromic device and a control method.
Background
An electrochromic device is a device that undergoes a significant color change upon energization. The color change is used as a non-luminous and low-power consumption display technology, and is very suitable for the fields of buildings, automobiles, indoor designs, consumer products and the like. Electrochromic devices (ECDs) have found wide application in energy efficient construction, optical information, and the like over the past decades. The device coloring and fading process is accompanied with ion injection and extraction of the color-changing material, but ions are attached to the surface of the color-changing material in the repeated use process, so that the device cannot fade completely or the phenomenon of charge accumulation still exists after fading. This phenomenon results in reduced device performance and lifetime, and thus compensation control of charge is necessary during use of electrochromic devices.
Disclosure of Invention
The invention aims to solve the defects of incomplete charge accumulation and fading of devices in the prior art, and provides a charge compensation device and a control method for electrochromic devices.
The first object of the present invention can be achieved by adopting the following technical scheme:
the charge compensation device comprises a Hall sensor, a transmittance sensor and a charging module, wherein the Hall sensor and the transmittance sensor are respectively connected with a test element, the test element is an electrochromic device, the Hall sensor and the transmittance sensor detect the transmittance and residual voltage of the electrochromic device, then test signals are output to the charging module, and if the transmittance exceeds a specified threshold value or the residual voltage is greater than 0, the charging module performs charge compensation on the electrochromic device until no charge accumulation and fading of the electrochromic device are complete.
Further, the electrochromic device comprises three electrochromic structures, wherein the first electrochromic structure comprises a transparent conductive layer, an electrochromic layer, an ion conductive layer and an ion storage layer which are adjacent in sequence; the second electrochromic structure is a transparent conductive layer, an electrochromic layer and an ion conductive layer which are adjacent in sequence; the third electrochromic structure is a transparent conductive layer and an electrochromic layer which are adjacent in sequence. The device with three structures has the same color changing principle, different working voltages and different initial transmittance.
Further, the front substrate and the back substrate of the electrochromic device are respectively connected with a transmittance sensor and a Hall sensor. The three use the same power system, namely a battery chip, but the transmittance sensor, the Hall sensor and the electrochromic device can independently excite the battery chip.
The other object of the invention can be achieved by adopting the following technical scheme:
a control method of a charge compensation device for an electrochromic device, the control method comprising the steps of:
collecting the transmittance L1 of the emitted electrochromic device through a transmittance sensor, comparing the collected transmittance L1 with a preset initial set value L0, outputting a working signal to a battery chip if the transmittance L1 is smaller than the initial set value L0, and not outputting the working signal to the chip if the transmittance L1 is larger than or equal to the initial set value; collecting residual voltage of the electrochromic device through a Hall sensor, inputting a voltage signal as an output signal into a battery chip of a charging module, and naming the voltage signal as L2;
when L1 < L0, l2=0, the battery chip is started until l1=initial value, and simultaneously l2=0, the battery chip is closed;
when L1∈ [ L0,100% ] (100% is the normal difference when the electrochromic device is not changing color), L2+.0, the battery chip is started until L2=0, the battery chip is closed;
when L1 is less than L0 and l2 is not equal to 0, starting the battery chip until l1=initial value, and simultaneously l2=0, and closing the battery chip;
when L1 > L0, l2=0, the battery chip is not started.
Further, the transmittance signal is detected by a transmittance sensor. The sensor compares the signal value with the initial set value to output a 1 or 0 signal to the battery chip
Further, the voltage signal is detected by a hall sensor. The sensor compares the signal value with 0V to output a 1 or 0 signal to the battery chip.
Compared with the prior art, the invention has the following advantages and effects:
1) According to the invention, the transmittance sensor and the Hall sensor are utilized to respectively detect the transmittance and the residual voltage of the electrochromic device, and the transmittance and the residual voltage are detected simultaneously, so that the problem of reduced transmittance caused by unbalanced charge or balanced charge of the device due to excessive fading is solved.
2) The invention effectively solves the problems of fading residue and charge accumulation of the electrochromic device, thereby prolonging the service life of the electrochromic device.
3) The control method designed by the invention is simple and universal, and can be suitable for electrochromic devices with all structures.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a block diagram of a charge compensation device for electrochromic devices according to the present disclosure;
FIG. 2 is a flow chart of a control method of a charge compensation apparatus for electrochromic devices according to the present disclosure;
fig. 3 is a block diagram showing the constitution of an electrochromic device disclosed in an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment discloses a charge compensation device for electrochromic device, this charge compensation device includes hall sensor, transmissivity sensor, charging module, wherein, hall sensor, transmissivity sensor link to each other with test element respectively, test element is electrochromic device, hall sensor and transmissivity sensor detect the transmissivity and the residual voltage of electrochromic device, then export the test signal to charging module, if the transmissivity exceeds appointed threshold value or residual voltage is greater than 0, charging module carries out charge compensation to electrochromic device, until electrochromic device's no charge accumulation fades completely.
When the fading process of the electrochromic device is finished, the self-checking process of the charge compensation device is started, the transmittance sensor works, incident light is injected into the electrochromic device, and the transmittance of the electrochromic device is detected to be 80% and smaller than an initial value of 90%. The hall sensor works and detects the residual voltage of the electrochromic device of 0.8V. The transmittance sensor and the Hall sensor output working signals to the battery chip, and the battery chip works to output reverse voltage. The electrochromic device is self-checked again, the transmittance sensor works, the Hall sensor works, incident light enters the electrochromic device, the transmittance of the electrochromic device is detected to be 90%, and the residual voltage of the electrochromic device is 0V. The self-checking process of the charge compensation device is ended.
Example 2
The embodiment discloses a charge compensation device for electrochromic device, this charge compensation device includes hall sensor, transmissivity sensor, charging module, wherein, hall sensor, transmissivity sensor link to each other with test element respectively, test element is electrochromic device, hall sensor and transmissivity sensor detect the transmissivity and the residual voltage of electrochromic device, then export the test signal to charging module, if the transmissivity exceeds appointed threshold value or residual voltage is greater than 0, charging module carries out charge compensation to electrochromic device, until electrochromic device's no charge accumulation fades completely.
When the fading process of the electrochromic device is finished, the self-checking process of the charge compensation device is started, the transmittance sensor works, incident light is injected into the electrochromic device, and the transmittance of the electrochromic device is detected to be 90%. The hall sensor works and detects the residual voltage of the electrochromic device of 0.8V. The Hall sensor outputs a working signal to the battery chip, and the battery chip works to output reverse voltage. The electrochromic device is self-checked again, the transmittance sensor works, the Hall sensor works, incident light enters the electrochromic device, the transmittance of the electrochromic device is detected to be 90%, and the residual voltage of the electrochromic device is 0V. The self-checking process of the charge compensation device is ended.
Example 3
The embodiment discloses a charge compensation device for electrochromic device, this charge compensation device includes hall sensor, transmissivity sensor, charging module, wherein, hall sensor, transmissivity sensor link to each other with test element respectively, test element is electrochromic device, hall sensor and transmissivity sensor detect the transmissivity and the residual voltage of electrochromic device, then export the test signal to charging module, if the transmissivity exceeds appointed threshold value or residual voltage is greater than 0, charging module carries out charge compensation to electrochromic device, until electrochromic device's no charge accumulation fades completely.
When the fading process of the electrochromic device is finished, the self-checking process of the charge compensation device is started, the transmittance sensor works, incident light is injected into the electrochromic device, and the transmittance of the electrochromic device is detected to be 80% and smaller than an initial value of 90%. The hall sensor works and detects the residual voltage of the electrochromic device of 0V. The transmittance sensor outputs a working signal to the battery chip, and the battery chip works to output reverse voltage. The electrochromic device is self-checked again, the transmittance sensor works, the Hall sensor works, incident light enters the electrochromic device, the transmittance of the electrochromic device is detected to be 90%, and the residual voltage of the electrochromic device is 0V. The self-checking process of the charge compensation device is ended.
Example 4
The embodiment discloses a charge compensation device for electrochromic device, this charge compensation device includes hall sensor, transmissivity sensor, charging module, wherein, hall sensor, transmissivity sensor link to each other with test element respectively, test element is electrochromic device, hall sensor and transmissivity sensor detect the transmissivity and the residual voltage of electrochromic device, then export the test signal to charging module, if the transmissivity exceeds appointed threshold value or residual voltage is greater than 0, charging module carries out charge compensation to electrochromic device, until electrochromic device's no charge accumulation fades completely.
When the fading process of the electrochromic device is finished, the self-checking process of the charge compensation device is started, the transmittance sensor works, incident light is injected into the electrochromic device, and the transmittance of the electrochromic device is detected to be 90% and is equal to the initial value of 90%. The hall sensor works and detects the residual voltage of the electrochromic device of 0V. The transmittance sensor outputs a working signal to the battery chip, the battery chip does not work, and the device self-checking is completed.
The above embodiment includes an example that two sensors work simultaneously and a certain single sensor works and does not need to work, and the above embodiment utilizes a transmittance sensor and a hall sensor to respectively detect the transmittance and the residual voltage of the electrochromic device, and the two sensors detect simultaneously, so that the problem of reduced transmittance caused by unbalanced charge or balanced charge of the device due to excessive fading is solved; meanwhile, the problems of fading residues and charge accumulation of the electrochromic device are effectively solved, and the service life of the electrochromic device is further prolonged.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (6)
1. The charge compensation device for the electrochromic device is characterized by comprising a Hall sensor, a transmittance sensor and a charging module, wherein the Hall sensor and the transmittance sensor are respectively connected with a test element, the test element is the electrochromic device, the transmittance and the residual voltage of the electrochromic device are detected by the Hall sensor and the transmittance sensor, then a test signal is output to the charging module, and if the transmittance exceeds a specified threshold value or the residual voltage is larger than 0, the charging module performs charge compensation on the electrochromic device until no charge accumulation and fading of the electrochromic device are complete.
2. The charge compensation device for an electrochromic device of claim 1, wherein the electrochromic device comprises three electrochromic structures, wherein a first electrochromic structure is a transparent conductive layer, an electrochromic layer, an ion conductive layer, an ion storage layer, which are adjacent in sequence; the second electrochromic structure is a transparent conductive layer, an electrochromic layer and an ion conductive layer which are adjacent in sequence; the third electrochromic structure is a transparent conductive layer and an electrochromic layer which are adjacent in sequence.
3. A charge compensation device for an electrochromic device according to claim 1, characterized in that the front and back substrates of the electrochromic device are connected with a transmittance sensor and a hall sensor, respectively.
4. A control method of a charge compensation device for an electrochromic device according to any one of claims 1 to 3, characterized in that the control method comprises the following steps:
collecting the transmittance L1 of the emitted electrochromic device through a transmittance sensor, comparing the collected transmittance L1 with a preset initial set value L0, outputting a working signal to a battery chip if the transmittance L1 is smaller than the initial set value L0, and not outputting the working signal to the chip if the transmittance L1 is larger than or equal to the initial set value; collecting residual voltage of the electrochromic device through a Hall sensor, inputting a voltage signal as an output signal into a battery chip of a charging module, and naming the voltage signal as L2;
when L1 < L0, l2=0, the battery chip is started until l1=initial value, and simultaneously l2=0, the battery chip is closed;
when L1∈ [ L0,100% ], L2++0, the battery chip is started until L2=0, and the battery chip is closed;
when L1 is less than L0 and l2 is not equal to 0, starting the battery chip until l1=initial value, and simultaneously l2=0, and closing the battery chip;
when L1 > L0, l2=0, the battery chip is not started.
5. The control method of a charge compensation device for an electrochromic device according to claim 4, wherein the transmittance difference signal is detected by a transmittance sensor.
6. The control method of a charge compensation device for an electrochromic device according to claim 4, wherein the voltage signal is detected by a hall sensor.
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| CN202111586266.5A CN114355693B (en) | 2021-12-20 | 2021-12-20 | Charge compensation device for electrochromic device and control method |
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| CN202111586266.5A CN114355693B (en) | 2021-12-20 | 2021-12-20 | Charge compensation device for electrochromic device and control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073011A (en) * | 1989-10-31 | 1991-12-17 | Toyoda Gosei Co., Ltd. | Electrochromic device with a reference electrochromic element |
| CN106773439A (en) * | 2017-04-11 | 2017-05-31 | 吉晟光电（深圳）有限公司 | Electrochromic system, control method and electrochromic rearview |
| CN108780260A (en) * | 2016-01-12 | 2018-11-09 | 显色公司 | Method for controlling electrochromic device and electrochromic device |
| CN210706824U (en) * | 2019-08-23 | 2020-06-09 | 重庆海德世拉索系统（集团）有限公司 | Automobile electrochromic window control system |
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2021
- 2021-12-20 CN CN202111586266.5A patent/CN114355693B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073011A (en) * | 1989-10-31 | 1991-12-17 | Toyoda Gosei Co., Ltd. | Electrochromic device with a reference electrochromic element |
| CN108780260A (en) * | 2016-01-12 | 2018-11-09 | 显色公司 | Method for controlling electrochromic device and electrochromic device |
| CN106773439A (en) * | 2017-04-11 | 2017-05-31 | 吉晟光电（深圳）有限公司 | Electrochromic system, control method and electrochromic rearview |
| CN210706824U (en) * | 2019-08-23 | 2020-06-09 | 重庆海德世拉索系统（集团）有限公司 | Automobile electrochromic window control system |
Non-Patent Citations (1)
| Title |
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| 电致变色薄膜研究进展;孙宁 等;《中国陶瓷》;第34卷(第5期);第34-37页 * |
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