Electrochromic and infrared reflective composite regulated window assembly and control method

Abstract

The application discloses a kind of electrochromic and infrared reflection composite regulating window assemblies and control methods, composite regulating window assemblies include two pieces of toughened glass substrate in parallel, form hollow cavity;Inner glass is sequentially arranged lower transparent conductive electrode, electrochromic film layer, electrically controllable infrared reflective film, upper transparent conductive electrode;Two layers of electrodes are connected by conductive terminal two independent drive sub-modules integrated in drive control unit;Drive control unit is externally connected temperature sensor, illumination sensor, control interface and power interface, and all optical components are prefabricated into standard hollow glass unit and assembled in support frame.Control method is by sensor collection environmental parameter, output three kinds of independent voltage pulse combination respectively adjust two layer function film optical gear position, switch off after completion, rely on film layer memory characteristics maintain state;Support local manual switching, building system remote linkage two kinds of control channel.

Description

Technical Field

[0001] This invention relates to the field of intelligent adjustment window technology, and in particular to a composite adjustment window assembly and control method that combines electrochromic and infrared reflection. Background Technology

[0002] While existing smart window technologies have made some progress in visible light modulation or passive heat insulation, they generally suffer from the following shortcomings: First, limited functionality: most products can only achieve simple dimming in the visible light band, or rely solely on a fixed Low-E coating for passive heat insulation, making it difficult to meet the multiple needs of lighting, heat insulation, and thermal insulation. Second, high energy consumption: active modulation methods such as electrochromic glass require continuous power supply after switching to maintain the state, and lack memory effect, leading to increased energy consumption over long-term operation. Third, slow response speed: passive phase change materials or thermochromic and photochromic materials rely on threshold triggering to respond to environmental changes, making it impossible to achieve rapid and precise control over sudden changes in sunlight and temperature. Fourth, complex integration and installation: existing film spraying or on-site bonding processes are easily affected by the environment, and on-site modification is difficult, which is not conducive to standardized factory prefabrication and rapid on-site installation. Therefore, there is an urgent need for an intelligent photothermal control window that integrates electrochromic and electrically controllable infrared reflective film, and achieves band division, rapid switching and memory retention through dual independent drive, in order to meet the building envelope requirements of all seasons, all weather and full spectrum, and to achieve factory prefabrication and easy on-site installation. Summary of the Invention

[0003] Given the limited adjustment capabilities of current smart windows, this invention provides a composite adjustment window component and control method combining electrochromic and infrared reflection, which can enrich the adjustment capabilities of smart windows.

[0004] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0005] An electrochromic and infrared reflective composite adjustment window assembly includes an outer tempered glass substrate and an inner tempered glass substrate arranged in parallel, forming a hollow cavity; it also includes an electrochromic film layer attached to the inner surface of the inner tempered glass substrate, an electrically controllable infrared reflective film stacked on the outer side of the electrochromic film layer, transparent conductive electrodes electrically connected to the two functional films respectively, a drive control unit, and a support frame; the transparent conductive electrodes are electrically connected to the drive control unit, and the support frame fixes all components and connects to the window frame.

[0006] According to one aspect of the present invention, the transparent conductive electrode adopts an ITO or silver nanowire mesh structure.

[0007] According to one aspect of the present invention, the thickness of the hollow cavity is 8 mm to 20 mm.

[0008] According to one aspect of the present invention, the control interface of the drive control unit supports ModbusTCP, BACnet / IP, and MQTT communication protocols, and can communicate with a building automation system.

[0009] According to one aspect of the present invention, the drive control unit is provided with a local manual switching terminal, which is electrically connected in parallel with the control interface.

[0010] According to one aspect of the present invention, the glass substrate, two functional films, and transparent conductive electrodes are integrated to form a standard insulated glass unit, which is detachably embedded in a support frame.

[0011] A control method includes the following steps:

[0012] S1. The drive control unit collects ambient temperature data through a temperature sensor and light intensity data through a light sensor.

[0013] S2. The drive control unit outputs a corresponding voltage pulse signal according to the preset judgment logic. The voltage pulse signal is sent to the electrochromic drive submodule and the infrared reflection drive submodule in two separate paths.

[0014] S3, the electrochromic driving submodule outputs a first type of pulse voltage to the lower transparent conductive electrode to adjust the visible light transmittance of the electrochromic film layer; the infrared reflection driving submodule outputs a second type of pulse voltage to the upper transparent conductive electrode to adjust the near-infrared reflection level of the electrically controllable infrared reflective film.

[0015] S4. After the pulse voltage output is completed, the dual-path drive module stops supplying power and relies on the electrochromic film layer and the self-memory structure of the electrically controllable infrared reflective film to maintain the current light transmission and reflection level.

[0016] S5. The drive control unit receives external building system commands or local manual switching commands through the control interface and executes steps S2 to S4 in a loop to complete gear switching.

[0017] According to one aspect of the present invention, when the first voltage pulse combination is output in step S2, the electrochromic film layer is at the highest light transmittance level, and the electrically controllable infrared reflective film is at the low reflectance level.

[0018] According to one aspect of the present invention, when the second voltage pulse combination is output in step S2, the light transmittance of the electrochromic film layer is at the highest light transmittance level, and the electrically controllable infrared reflective film is at the high reflectance level.

[0019] According to one aspect of the present invention, when the third voltage pulse combination is output in step S2, the light transmittance of the electrochromic film layer is at the lowest light transmittance level, and the electrically controllable infrared reflective film is at the high reflectance level.

[0020] Advantages of implementing this invention:

[0021] Independent adjustment by wavelength: It is equipped with a layered electrochromic film and an electrically controllable infrared reflective film, and two independent conductive electrodes and driving sub-modules, which can independently adjust the visible light and near-infrared wavelengths, thus solving the problem that traditional smart windows can only control a single spectral wavelength.

[0022] Low power consumption operation: The pulse voltage is only output at the moment of gear switching. No continuous power supply is required during the steady-state operation. The optical state is maintained by the memory structure of the two functional films, which greatly reduces the power consumption of the window during long-term operation.

[0023] Standardization and modularization: All optical functional components are pre-sealed and integrated into standard insulated glass units. On-site assembly can be completed simply by embedding a support frame and connecting to a low-voltage power supply and communication interface, simplifying on-site construction procedures.

[0024] High compatibility: It has two control paths: local manual switching and remote linkage with building automation system. It is compatible with mainstream building communication protocols and adapts to centralized management and control scenarios of intelligent buildings.

[0025] Wide range of adjustable optical parameters: The standardized design of the hollow cavity thickness and film layer light transmission / reflection adjustment range can adapt to the hardware parameter requirements of various working conditions such as winter heat preservation, summer heat insulation, and strong light shading. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a composite adjustment window assembly of electrochromic and infrared reflection according to the present invention;

[0028] Figure 2 This is a control block diagram of a composite adjustment window assembly combining electrochromic and infrared reflection according to the present invention.

[0029] Illustrations: 1. Outer tempered glass substrate; 2. Inner tempered glass substrate; 3. Hollow cavity; 4. Electrochromic film layer; 5. Electrochromic infrared reflective film; 6a. Lower transparent conductive electrode; 6b. Upper transparent conductive electrode; 7a. First conductive terminal; 7b. Second conductive terminal; 8a. Electrochromic driving submodule; 8b. Infrared reflective driving submodule; 9. Temperature sensor; 10. Light sensor; 11. Support frame; 12. Control interface; 13. Power interface. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1 , Figure 2 As shown, a composite adjustment window assembly of electrochromic and infrared reflection: an outer tempered glass substrate 1 and an inner tempered glass substrate 2 are arranged in parallel and spaced apart, and the two are sealed around to form a hollow cavity 3 with a thickness of 12mm. The hollow cavity is filled with inert heat-insulating gas.

[0032] The inner tempered glass substrate 2 facing the hollow cavity 3 is sequentially arranged with a lower transparent conductive electrode 6a, an electrochromic film layer 4, an electrically controllable infrared reflective film 5, and an upper transparent conductive electrode 6b.

[0033] The lower and upper transparent conductive electrodes are made of ITO conductive glass. The lower transparent conductive electrode 6a is electrically connected to the electrochromic driving submodule 8a through the first conductive terminal 7a, and the upper transparent conductive electrode 6b is electrically connected to the infrared reflection driving submodule 8b through the second conductive terminal 7b. The electrochromic driving submodule 8a and the infrared reflection driving submodule 8b are integrated into the same driving control unit to form a dual-path driving module.

[0034] The drive control unit is connected to an external temperature sensor 9, a light sensor 10, a control interface 12, and a power interface 13; the control interface 12 supports the Modbus TCP communication protocol, and the drive control unit is connected in parallel to set a local manual switching terminal.

[0035] The outer tempered glass substrate 1, the inner tempered glass substrate 2, the hollow cavity 3, the two functional films, and the transparent conductive electrode group are pre-sealed in the factory to form a standard hollow glass unit. The standard hollow glass unit can be detached and snapped into the support frame 11 for fixed assembly.

[0036] In this embodiment, the visible light transmittance of the electrochromic film layer is adjustable in the range of 10% to 80%, and the near-infrared reflectance of the electrically controllable infrared reflective film is adjustable in the range of 10% to 90%.

[0037] Control process:

[0038] S1. The drive control unit collects the ambient temperature value output by temperature sensor 9 and the outdoor light intensity value output by light sensor 10 in real time.

[0039] S2. The drive control unit reads the internal preset judgment logic, matches and outputs the corresponding voltage pulse combination, and transmits the two pulse signals to the electrochromic drive submodule 8a and the infrared reflection drive submodule 8b respectively.

[0040] S3. The electrochromic driving submodule 8a outputs a pulse voltage to the lower transparent conductive electrode 6a to change the light transmission level of the electrochromic film layer 4; the infrared reflection driving submodule 8b outputs an independent pulse voltage to the upper transparent conductive electrode 6b to switch the near-infrared reflection level of the electrically controllable infrared reflective film 5.

[0041] S4. After the pulse voltage output duration is completed, the dual-path drive module synchronously cuts off the electrode power supply circuit. The electrochromic film layer 4 and the electrically controllable infrared reflective film 5 rely on their own memory characteristics to lock the current optical state, and there is no continuous power input.

[0042] S5, scene switching triggers are divided into two paths:

[0043] Path 1: Control interface 12 receives remote control commands from the building automation system and drives the control unit to repeat steps S2~S4 to complete gear switching;

[0044] Pathway 2: The operator operates the local manual switching terminal to output a switching signal, driving the control unit to repeat steps S2~S4 to complete the gear switching.

[0045] Three pulse combination conditions are implemented: Condition 1 (first voltage pulse combination): the electrochromic film layer 4 switches to the highest light transmittance level of 80%, and the electrically controllable infrared reflective film 5 switches to the low reflectance level of 10%; Condition 2 (second voltage pulse combination): the electrochromic film layer 4 maintains the highest light transmittance level of 80%, and the electrically controllable infrared reflective film 5 switches to the high reflectance level of 90%; Condition 3 (third voltage pulse combination): the electrochromic film layer 4 switches to the lowest light transmittance level of 10%, and the electrically controllable infrared reflective film 5 maintains the high reflectance level of 90%.

[0046] Furthermore, the aforementioned standard insulated glass units are embedded in batches into the exterior support frame of the office building. The power interface 13 is uniformly connected to the building's low-voltage power distribution circuit, and the control interface 12 is connected to the building's BMS system via a network cable. Data communication is achieved using the BACnet / IP protocol. Maintenance personnel can issue switching commands through the building's central control platform to drive the control unit to automatically execute the aforementioned control process. In scenarios without network access, operators can manually adjust the local gear position through the local switching terminal on the window side.

[0047] Advantages of implementing this invention:

[0048] Independent adjustment by wavelength: It is equipped with a layered electrochromic film and an electrically controllable infrared reflective film, and two independent conductive electrodes and driving sub-modules, which can independently adjust the visible light and near-infrared wavelengths, thus solving the problem that traditional smart windows can only control a single spectral wavelength.

[0049] Low power consumption operation: The pulse voltage is only output at the moment of gear switching. No continuous power supply is required during the steady-state operation. The optical state is maintained by the memory structure of the two functional films, which greatly reduces the power consumption of the window during long-term operation.

[0050] Standardization and modularization: All optical functional components are pre-sealed and integrated into standard insulated glass units. On-site assembly can be completed simply by embedding a support frame and connecting to a low-voltage power supply and communication interface, simplifying on-site construction procedures.

[0051] High compatibility: It has two control paths: local manual switching and remote linkage with building automation system. It is compatible with mainstream building communication protocols and adapts to centralized management and control scenarios of intelligent buildings.

[0052] Wide range of adjustable optical parameters: The standardized design of the hollow cavity thickness and film layer light transmission / reflection adjustment range can adapt to the hardware parameter requirements of various working conditions such as winter heat preservation, summer heat insulation, and strong light shading.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A composite adjustment window assembly combining electrochromic and infrared reflection, characterized in that, The device includes an outer tempered glass substrate and an inner tempered glass substrate arranged in parallel, forming a hollow cavity; it also includes an electrochromic film layer attached to the inner surface of the inner tempered glass substrate, an electrically controllable infrared reflective film stacked on the outer side of the electrochromic film layer, transparent conductive electrodes electrically connected to the two functional films respectively, a drive control unit, and a support frame; the transparent conductive electrodes are electrically connected to the drive control unit, and the support frame fixes all components and connects to the window frame.

2. The composite adjustment window assembly of electrochromic and infrared reflection according to claim 1, characterized in that, The transparent conductive electrode adopts an ITO or silver nanowire mesh structure.

3. The composite adjustment window assembly of electrochromic and infrared reflection according to claim 1, characterized in that, The thickness of the hollow cavity is 8mm to 20mm.

4. The composite adjustment window assembly of electrochromic and infrared reflection according to claim 1, characterized in that, The control interface of the drive control unit supports ModbusTCP, BACnet / IP, and MQTT communication protocols, and can communicate with the building automation system.

5. The composite adjustment window assembly of electrochromic and infrared reflection according to claim 1, characterized in that, The drive control unit is equipped with a local manual switching terminal, which is electrically connected in parallel with the control interface.

6. The composite adjustment window assembly of electrochromic and infrared reflection according to claim 1, characterized in that, The glass substrate, two functional films, and transparent conductive electrodes are integrated to form a standard hollow glass unit, which can be detachably embedded into a support frame.

7. A control method for the composite adjustment window assembly as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. The drive control unit collects ambient temperature data through a temperature sensor and light intensity data through a light sensor. S2. The drive control unit outputs a corresponding voltage pulse signal according to the preset judgment logic. The voltage pulse signal is sent to the electrochromic drive submodule and the infrared reflection drive submodule in two separate paths. S3, the electrochromic driving submodule outputs a first type of pulse voltage to the lower transparent conductive electrode to adjust the visible light transmittance of the electrochromic film layer; the infrared reflection driving submodule outputs a second type of pulse voltage to the upper transparent conductive electrode to adjust the near-infrared reflection level of the electrically controllable infrared reflective film. S4. After the pulse voltage output is completed, the dual-path drive module stops supplying power and relies on the electrochromic film layer and the self-memory structure of the electrically controllable infrared reflective film to maintain the current light transmission and reflection level. S5. The drive control unit receives external building system commands or local manual switching commands through the control interface and executes steps S2 to S4 in a loop to complete gear switching.

8. The control method according to claim 7, characterized in that, When the first voltage pulse combination is output in step S2, the electrochromic film layer is at its highest light transmittance level, and the electrically controllable infrared reflective film is at its lowest reflectance level.

9. The control method according to claim 7, characterized in that, When the second voltage pulse combination is output in step S2, the electrochromic film layer is at its highest light transmittance level, and the electrically controllable infrared reflective film is at its high reflectance level.

10. The control method according to claim 7, characterized in that, When the third voltage pulse combination is output in step S2, the light transmittance of the electrochromic film layer is at the lowest light transmittance level, and the electrically controllable infrared reflective film is at the high reflectance level.

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