Dimming film power supply and control device and dimming film system

Abstract

The application provides a dimming film power supply and control device and a dimming film system. The device body is provided with a shell. The shell is internally provided with a first battery, a second battery and a circuit board. The surface of the device body is provided with a photovoltaic panel and a power supply interface. The first battery supplies power to the dimming film through the power supply interface, and the photovoltaic panel charges the second battery. The second battery supplies power to the main control unit of the circuit board. The main control unit controls the standby switch to cut off the discharge of the first battery when the dimming film is set to be in a non-dimming state. The application can prolong the power supply time of the first battery, support the application scene without laying an additional power supply line when the dimming frequency is not high, and reduce the design and construction cost in the early stage.

Description

Technical Field

[0001] This invention relates to the field of dimming film control technology, and more particularly to dimming film power supply and control devices and dimming film systems. Background Technology

[0002] Dimming film is a new type of electronic light-controlling product that instantly switches between transparent and opaque states under applied voltage. For example, it is opaque (frosted) without applied voltage and transparent with applied voltage, and the settings can be reversed. Dimming film is composited between two pieces of glass to form dimming glass, replacing traditional walls or transparent glass partitions, intelligently controlling the transparency and frosting states. The power consumption of dimming film is approximately 5W / ㎡. In some applications, such as when the dimming film is used as a partition in an opaque state for extended periods and only briefly dimmed to a transparent state for user observation, the direct energy consumption of the dimming film during dimming operation is not high.

[0003] The existing dimming film power supply and control lines are inconvenient to lay. They usually need to be laid in advance during the interior decoration stage, resulting in high early design and construction costs. If the lines are laid after the decoration is completed, they often need to be laid in the open or in a detour, which not only makes the construction difficult, but also easily damages the original decoration effect and affects the overall aesthetics.

[0004] Chinese patent CN201811077236.X proposes an easy-to-install, self-powered dimming film. The package contains a built-in DC power supply, including a battery and an inverter. When the external power supply is interrupted, the DC power supply can be activated. The DC power output from the battery is converted into AC power by the inverter, enabling the dimming film to operate. However, without an external power supply, all electrical components within the package are powered by the battery, and the dimming film's operating state is controlled by various control commands received through a control module. The battery is constantly consuming power, making it difficult to support long-term operation without an external power source.

[0005] Therefore, how to extend the power supply duration of the dimming film system in application scenarios where dimming frequency is not high, so as to achieve the goal of eliminating the need to lay additional power lines, is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] This invention proposes a dimming film power supply and control device and a dimming film system. The dimming film is powered by a first battery, and the main control unit is continuously powered by a photovoltaic panel and a second battery. When the dimming film is in a non-dimming state, the discharge of the first battery can be completely cut off, extending the power supply time of the first battery. This can support applications with low dimming frequency without the need to lay additional power lines.

[0007] This invention provides the following solution:

[0008] According to a first aspect, the present invention provides a dimming film power supply and control device. The device body is provided with a housing, and the housing is provided with a first battery, a second battery and a circuit board. The surface of the device body is provided with a photovoltaic panel and a power supply interface. The first battery supplies power to the dimming film through the power supply interface, and the photovoltaic panel charges the second battery.

[0009] The circuit board is equipped with:

[0010] A voltage-regulating inverter unit is installed in the line from the first battery to the power supply interface, and is used to convert the DC power output by the first battery into AC power that is compatible with the dimming film.

[0011] A standby switch, connected to the first battery, is used to selectively control the discharge of the first battery.

[0012] The main control unit is connected to the voltage regulating inverter unit and the standby switch, and is used to control the output of the voltage regulating inverter unit and to control the standby switch to cut off the discharge of the first battery when the dimming film is in a non-dimming state.

[0013] A voltage regulator unit is installed in the power supply line from the second battery to the main control unit, and is used to convert the DC power output by the second battery into DC power that is compatible with the main control unit.

[0014] In some embodiments, the main body of the device further includes an input unit electrically connected to the main control unit for receiving user input signals.

[0015] In some embodiments, the circuit board is further provided with a wireless communication unit electrically connected to the main control unit for receiving wireless control signals to the dimming film.

[0016] In some embodiments, the main body of the device further includes a display unit electrically connected to the main control unit for displaying the device status.

[0017] In some embodiments, the surface of the device body is further provided with a charging interface, through which an external power source charges the first battery; the circuit board further includes a first charging unit connected between the charging interface and the first battery, used to control the charging of the first battery by the external power source.

[0018] In some embodiments, the circuit board further includes a second charging unit connected between the photovoltaic panel and the second battery, for controlling the photovoltaic panel to charge the second battery.

[0019] In some embodiments, the voltage regulating inverter unit includes:

[0020] The first voltage regulating subunit is connected to the standby switch and is used to adjust the output voltage of the first battery to a set DC voltage.

[0021] An inverter subunit, connected to the first voltage regulating subunit and the power supply interface, is used to convert the DC power output by the first voltage regulating subunit into AC power.

[0022] The second voltage regulation subunit is connected to the standby switch, the first voltage regulation subunit, and the inverter subunit. It is used to adjust the output voltage of the first battery to a set DC voltage to power the devices of the first voltage regulation subunit and the inverter subunit.

[0023] In some embodiments, the dimming film power supply and control device further includes a bracket, the bracket including a base plate and a back plate, the base plate and the back plate being combined to form an L-shape, the base plate and the back plate being used to support the main body of the device, so that the photovoltaic panel is exposed outward, the back plate having a power supply electrode at the position corresponding to the power supply interface, the power supply electrode being electrically connected to the electrode terminal of the dimming film, and the power supply electrode being able to contact and connect with the power supply interface of the main body of the device.

[0024] In some embodiments, the back plate is provided with a first magnetic attractor, and the housing is provided with a second magnetic attractor, wherein the first magnetic attractor and the second magnetic attractor are magnetically attracted to each other.

[0025] According to the second aspect, this application provides a dimming film system, including a dimming film and a dimming film power supply and control device according to the first aspect above. The dimming film is electrically connected to the dimming film power supply and control device through the power supply interface, and the dimming film power supply and control device provides power supply and drive control for the dimming film, eliminating the need for additional power supply lines.

[0026] This application has the following advantages compared with the prior art:

[0027] The dimming film power supply and control device and dimming film system proposed in this application embodiment provide suitable AC power to the dimming film through the control of the main control unit. The photovoltaic panel and the second battery provide uninterrupted power supply to the main control unit. The main control unit controls the standby switch to control the discharge of the first battery to the dimming film. When the dimming film is not dimming, the power supply of the first battery can be completely cut off, eliminating the power loss of the first battery during standby and extending the power supply time of the first battery. It can support the long-term power supply of the dimming film by the first battery in application scenarios where the dimming frequency is not high. Thus, it can eliminate the need to lay additional power lines in the installation of the dimming film and reduce the initial design and construction costs. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 These are schematic diagrams of the main structure of the device according to some embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the main body of the device according to some embodiments of this application from another angle;

[0031] Figure 3 This is an exploded schematic diagram of the main structure of the device according to some embodiments of this application;

[0032] Figure 4 This is a block diagram of the main electrical structure of the device according to some embodiments of this application;

[0033] Figure 5 These are schematic diagrams of standby switch circuits according to some embodiments of this application;

[0034] Figure 6 This is another electrical structure block diagram of the main body of the device according to some embodiments of this application;

[0035] Figure 7 These are schematic diagrams of the charging interface and the first charging unit circuit of some embodiments of this application;

[0036] Figure 8 This is a schematic diagram of the second charging unit circuit in some embodiments of this application;

[0037] Figure 9 This is another electrical structure block diagram of the main body of the device according to some embodiments of this application;

[0038] Figure 10 This is a schematic diagram of the device body and the support frame in some embodiments of this application;

[0039] Figure 11 These are schematic diagrams of the main body and support structure of some embodiments of this application;

[0040] Figure 12 This is a schematic diagram of the magnetic attraction structure of the main body and support of the device in some embodiments of this application;

[0041] Figure 13 This is a schematic diagram of the installation of a dimming film and a dimming film power supply and control device according to some embodiments of this application.

[0042] In the picture:

[0043] 100. Main body of the device; 110. Housing; 111. Battery mounting position; 112. Circuit board mounting position; 113. Roller mounting groove; 114. Charging interface mounting position; 115. Power supply interface mounting position; 116. Second magnetic component mounting position; 120. Photovoltaic panel; 130. First battery; 140. Second battery; 150. Circuit board; 1501. First voltage detection unit; 1502. First current detection unit; 1503. Second voltage detection unit; 1504. Second current detection unit; 151. Voltage regulating inverter unit; 1511. First voltage regulating subunit; 1512. Inverter subunit; 1513. Second voltage regulating subunit; 152. Standby switch; 153. First charging unit; 154. Main control unit; 155. Voltage regulator unit; 156. Second charging unit; 157. Input unit; 1571. Roller; 1572. Rotary encoder; 158. Display unit; 1581. First battery power indicator; 1582. Photovoltaic panel charging status indicator; 1583. Wireless communication indicator; 159. Wireless communication unit; 160. Power supply interface; 170. Charging interface; 180. Second magnetic clasp; 200. Bracket; 210. Base plate; 220. Back plate; 221. Power supply electrode; 222. First magnetic clasp; 2221. First magnetic clasp mounting position; 300. Dimming film; 310. Port electrode; 400. Glass plate; 410. Glass glue; 500. Frame. Detailed Implementation

[0044] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0045] Example 1

[0046] See Figures 1 to 12 This invention provides a dimming film power supply and control device. The main body 100 of the device is provided with a housing 110. The housing 110 is provided with a first battery 130, a second battery 140 and a circuit board 150. The surface of the main body 100 of the device is provided with a photovoltaic panel 120 and a power supply interface 160.

[0047] In some implementations, see Figure 1 , Figure 3The housing 110 and the photovoltaic panel 120 together form a closed accommodating space. The first battery 130 is disposed in the battery mounting position 111 of the housing 110, and the circuit board 150 is disposed in the circuit board mounting position 112 of the housing 110. In some other embodiments, not shown in the drawings, the housing may be formed by splicing an upper piece and a lower piece to form an accommodating space, and the photovoltaic panel is disposed on the outer surface of the housing.

[0048] The power supply interface 160 can be located at the power supply interface mounting position 115 on the bottom surface of the housing 110 relative to the photovoltaic panel 120, and can be a contact interface. The first battery 130 provides power to the dimming film 300 through the power supply interface 160. In some applications, see [reference needed]. Figure 13 The dimming film 300 can be installed in the interlayer of the glass plate 400 or attached to the surface of the glass plate 400, which is then installed in the frame 500. The main body 100 of the dimming film power supply and control device can be fixed to the surface of the glass plate 400 or the surface of the frame 500 (not shown in the figure). The port electrode 310 of the dimming film 300 is led out through a wire and electrically connected to the power supply interface 160 of the main body 100 through an electrical connector, such as a plug.

[0049] The photovoltaic panel 120 is electrically connected to the second battery 140, providing power to charge the second battery 140. In some applications, when the photovoltaic panel 120 receives sufficient sunlight, it can charge the second battery 140 and simultaneously provide power to the load of the second battery 140. When the photovoltaic panel 120 receives insufficient sunlight, the second battery 140 provides power to the load.

[0050] The circuit board 150 includes a voltage regulating inverter unit 151, a standby switch 152, a main control unit 154, and a voltage regulator unit 155. The circuit board 150 can be a single unit or composed of multiple circuit boards.

[0051] The voltage regulating inverter unit 151 is disposed in the line from the first battery 130 to the power supply interface 160, and is used to convert the DC power output by the first battery 130 into AC power that is compatible with the dimming film 300.

[0052] It should be noted that the operating voltage range of the dimming film is typically 18V to 75V AC, with a frequency of 50 / 60Hz. The main control unit 154 can control the voltage regulating inverter unit 151 to output AC power that meets the operating requirements of the dimming film.

[0053] Standby switch 152 is connected to the first battery 130 and is used to selectively control the discharge of the first battery 130. See also, as an example. Figure 5The standby switch can be implemented using PMOS switch Q1 and NMOS switch Q2. The source of PMOS switch Q1 is connected to the positive terminal of the first battery, and the drain of PMOS switch Q1 is connected to the power input terminal of the voltage-regulating inverter unit. The gate of PMOS switch Q1 is connected to the drain of NMOS switch Q2 through resistor R18. The source of NMOS switch Q2 is grounded, and the gate of NMOS switch Q2 is connected to the main control unit. When the main control unit controls the gate of NMOS switch Q2 to a high level, both NMOS switch Q2 and PMOS switch Q1 are turned on, the first battery can discharge externally, the dimming film 300 is powered, and it is in dimming mode. When the main control unit controls the gate of NMOS switch Q2 to a low level, both NMOS switch Q2 and PMOS switch Q1 are turned off, the path for the first battery to discharge externally is cut off, the power supply to dimming film 300 is cut off, and it is in non-dimming mode.

[0054] The main control unit 154 is connected to the voltage regulating inverter unit 151 and the standby switch 152. It controls the output of the voltage regulating inverter unit 151 and the standby switch 152 to cut off the discharge of the first battery 130 when the dimming film 300 is in a non-dimming state. The main control unit 154 may include a microprocessor (MCU) and peripheral devices. The microprocessor (MCU) has general-purpose I / O port control functions, ADC functions, and communication functions. The main control unit 154 can control the dimming film 300 to be in a dimming state or a non-dimming state based on user input signals received through the general-purpose port or communication unit. The main control unit 154 can also control the dimming film according to its own program settings. The main control unit 154 can determine whether to control the dimming film to be in a dimming state based on its own program settings, user input signals received through the general-purpose I / O port, or communication signals received through the communication port, and perform corresponding control outputs.

[0055] To illustrate, consider the estimation of the time required for the first battery to deplete when the main control unit 154 employs a control strategy that controls the standby switch 152 to cut off the discharge of the first battery 130 when the dimming film 300 is in a non-dimming state. Assume the dimming film's power consumption is 5W / m², the maximum power consumption of the voltage-regulating inverter unit is 1.2W, each dimming session lasts 5-10 seconds, and a single 3600mAh 18650 battery can support 360-720 dimming sessions on a 2.4m² dimming film. As an example, if the first battery uses 16 3600mAh 18650 batteries, and each dimming session lasts 10 seconds, Table 1 shows the time required for the first battery to deplete for different dimming film areas and daily dimming frequency. It is evident that for applications with low dimming frequency, the first battery can be used to power the dimming film for extended periods.

[0056] Table 1

[0057]

[0058] A voltage regulator unit 155 is installed in the power supply line from the second battery 140 to the main control unit 154. It converts the DC power output from the second battery 140 into DC power compatible with the main control unit 154. Since the power consumption of the main control unit 154 and commonly used peripherals is low, it can be controlled below 0.5W. It can even be configured to operate in a periodic sleep mode to further reduce power consumption. A photovoltaic panel with an area of ​​0.025㎡ can provide approximately 5W of power generation. Therefore, utilizing the photovoltaic panel in conjunction with the second battery for energy storage can provide a long-term uninterrupted power supply to the main control unit.

[0059] The dimming film power supply and control device proposed in this invention provides suitable AC power to the dimming film through the control of the main control unit. The photovoltaic panel and the second battery provide uninterrupted power supply to the main control unit. The main control unit controls the standby switch to control the power supply of the first battery to the dimming film. When the dimming film is not dimming, the power supply of the first battery can be completely cut off, eliminating the power loss of the first battery during standby and extending the power supply time of the first battery. It can support the long-term power supply of the dimming film by the first battery in application scenarios where the dimming frequency is not high. Thus, it can eliminate the need to lay additional power lines in the installation of the dimming film and reduce the initial design and construction costs.

[0060] In some embodiments, see Figures 1 to 4 The main body 100 of the device also includes an input unit 157, electrically connected to the main control unit 154, for receiving user input signals. In some embodiments, the input unit 157 includes a roller 1571, a rotary encoder 1572 disposed on the circuit board 150, and a push-button switch (not shown). The roller 1571 protrudes from the roller mounting groove 113 on the side of the housing 110. One end of the central shaft of the roller 1571 is fixed to the center hole of the rotary encoder 1572, and the other end of the central shaft of the roller 1571 is used to press the push-button switch, which can realize a function similar to the output of pressing and rotating signals of a mouse scroll wheel. In use, the user can turn the dimming state on or off by pressing the roller 1571 to output a pressing signal, and the user can also change the transparency of the dimming film by rolling the roller 1571 to output a rotating signal via the rotary encoder 1572.

[0061] In some embodiments, see Figure 3 , Figure 4 The circuit board 150 also includes a wireless communication unit 159, electrically connected to the main control unit 154, for receiving wireless control signals to the dimming film. The wireless control signals to the dimming film may include enabling or disabling dimming, and setting the transparency of the dimming film. The wireless communication unit 159 may be a Bluetooth module, a 3G / 4G / 5G mobile communication module, an RF communication module, or an IoT communication module, etc.

[0062] In some embodiments, see Figures 1 to 4 The main body 100 of the device also includes a display unit 158, electrically connected to the main control unit 154, for displaying the device status. In some embodiments, the display unit 158 ​​includes multiple status indicator lights. As some examples, the status indicator lights may include: a first battery power indicator light 1581 for displaying the power level of the first battery 130; a photovoltaic panel charging status indicator light 1582 for displaying the charging status of the photovoltaic panel 120; and a wireless communication indicator light 1583 for displaying the wireless communication status, such as Bluetooth communication status.

[0063] In some embodiments, see Figures 1 to 3 , Figure 6 The surface of the main body 100 of the device is also provided with a charging interface 170, through which an external power source charges the first battery 130; the circuit board 150 also includes a first charging unit 153, which is connected between the charging interface 170 and the first battery 130 and is used to control the charging of the first battery 130 by the external power source.

[0064] As an example, see Figure 6 , Figure 7 The charging interface 170 is a USB Type-C interface USB1. The first charging unit 153 includes a USB PD fast charging protocol chip U2 and a boost circuit composed of a transformer L1, capacitors C3 and C4, diode D4, and NMOS switch Q3. The USB PD fast charging protocol chip U2 is connected to the USB Type-C interface USB1, providing PD fast charging protocol communication for the connected external power supply, enabling the external power supply to provide the specified DC power. Under the control of the main control unit 154, the boost circuit can increase the voltage of the DC power to facilitate charging of the first battery 130. See also... Figure 3 The charging port 170 can be located at the charging port mounting position 114 of the housing 110.

[0065] In some embodiments, see Figure 6 The circuit board 150 also includes a second charging unit 156, which is connected between the photovoltaic panel 120 and the second battery 140, and is used to control the photovoltaic panel 120 to charge the second battery 140.

[0066] As an example, see Figure 6 , Figure 8 The interface CN3 connects to the photovoltaic panel 120. The lithium battery charging management chip U10 of the second charging unit 156 converts the DC power from the photovoltaic panel 120 to provide a stable DC charging voltage for the second battery 140, controls the indicator LED7 to display the charging status, and also detects the charging temperature through the thermocouple R62.

[0067] In some embodiments, see Figure 9 The voltage regulating inverter unit 151 includes a first voltage regulating subunit 1511, an inverter subunit 1512, and a second voltage regulating subunit 1513.

[0068] The first voltage regulating subunit 1511 is connected to the standby switch 152 and is used to adjust the output voltage of the first battery 130 to a set DC voltage. The first voltage regulating subunit 1511 can be a half-bridge buck circuit, which is driven and controlled by the main control unit 154 through a buck control circuit to control the output voltage of the half-bridge buck circuit. In some applications, the transparency of the dimming film can be adjusted by changing the output voltage of the first voltage regulating subunit 1511.

[0069] Inverter subunit 1512 connects the first voltage regulating subunit 1511 and the power supply interface 160, and is used to convert the DC power output by the first voltage regulating subunit 1511 into AC power. Inverter subunit 1512 can be a full-bridge inverter circuit, and the main control unit 154 drives and controls each switch of the full-bridge inverter circuit through the inverter control circuit to convert the input DC power into AC power.

[0070] The second voltage regulating subunit 1513 is connected to the standby switch 152, the first voltage regulating subunit 1511 and the inverter subunit 1512, and is used to adjust the output voltage of the first battery 130 to a set DC voltage to power the devices of the first voltage regulating subunit 1511 and the inverter subunit 1512.

[0071] In some implementations, the second voltage regulating subunit 1513 also supplies power to the devices of the first charging unit 153.

[0072] In some implementations, see Figure 9 The circuit board 150 also includes a first voltage detection unit 1501, a first current detection unit 1502, a second voltage detection unit 1503, and a second current detection unit 1504, all of which are connected to the main control unit 154 to provide feedback for voltage regulation and inverter control. Specifically, the first voltage detection unit 1501 detects the voltage of the first battery 130, the first current detection unit 1502 detects the current of the first battery, the second voltage detection unit 1503 detects the output voltage of the first voltage regulation subunit 1511, and the second current detection unit 1504 detects the current of each arm of the full-bridge inverter circuit.

[0073] In some embodiments, see Figure 10 , Figure 11The dimming film power supply and control device also includes a bracket 200, which includes a base plate 210 and a back plate 220. The base plate 210 and back plate 220 are combined to form an L-shape. The base plate 210 and back plate 220 support the main body 100 of the device, allowing the photovoltaic panel 120 to be exposed outwards. The back plate 220 has a power supply electrode 221 at the corresponding power supply interface 160 position. The power supply electrode 221 is electrically connected to the electrode terminals of the dimming film 300. If directly connected by a wire, the power supply electrode 221 can also make contact and conduct electricity with the power supply interface 160 of the main body 100 of the device. (Reference) Figure 13 As illustrated, the bracket 200 and the device body 100 can be fixed to the surface of the glass plate 400 or the surface of the frame 500 (not shown in the figure). During use, when the device body 100 is placed on the bracket 200, the power supply interface 160 of the device body 100 contacts and conducts with the power supply electrode 221 of the bracket 200, allowing the device body 100 to supply power to the dimming film 300. When the first battery 130 is depleted, the device body 100 can be removed from the bracket 200 for charging or battery replacement.

[0074] In some embodiments, see Figure 12 The back plate 220 of the bracket 200 is provided with a first magnetic attractor 222, and the housing 110 of the main body 100 is provided with a second magnetic attractor 180. The first magnetic attractor 222 and the second magnetic attractor 180 are magnetically attracted to each other, so that the bracket 200 can more stably support the main body 100. The first magnetic attractor 222 can be set in the first magnetic attractor mounting position 2221 of the back plate 220, and the second magnetic attractor 180 can be set in the second magnetic attractor mounting position 116 of the housing 110. The first magnetic attractor 222 and the second magnetic attractor 180 can be a magnetic sheet and an iron sheet, respectively, or they can be magnetic sheets with different magnetic poles.

[0075] Example 2

[0076] See Figures 1 to 13 The present invention provides a dimming film system, including a dimming film 300 and a dimming film power supply and control device of the above embodiment 1. The dimming film 300 is electrically connected to the dimming film power supply and control device through a power supply interface 160. The dimming film power supply and control device provides power supply and drive control for the dimming film 300, eliminating the need for additional power supply lines.

[0077] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art and should not be interpreted in an idealized or overly formal sense unless specifically defined.

[0078] It should be noted that certain terms are used in this specification to refer to specific components. Those skilled in the art will understand that different manufacturers and producers may use different terms to refer to the same component. This specification does not distinguish components based on differences in terminology, but rather on differences in their functions.

[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention and form different embodiments.

[0081] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed herein and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed herein may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dimming film power supply and control device, characterized in that, The main body of the device is provided with a housing, inside which are a first battery, a second battery and a circuit board. The surface of the main body of the device is provided with a photovoltaic panel and a power supply interface. The first battery supplies power to the dimming film through the power supply interface, and the photovoltaic panel charges the second battery. The circuit board is equipped with: A voltage-regulating inverter unit is installed in the line from the first battery to the power supply interface, and is used to convert the DC power output by the first battery into AC power that is compatible with the dimming film. A standby switch, connected to the first battery, is used to control the first battery to discharge to the voltage-regulating inverter unit; The main control unit is connected to the voltage-regulating inverter unit and the standby switch, and is used to control the output of the voltage-regulating inverter unit and to control the standby switch to cut off the discharge of the first battery to the voltage-regulating inverter unit when the dimming film is in a non-dimming state. A voltage regulator unit is installed in the power supply line from the second battery to the main control unit, and is used to convert the DC power output by the second battery into DC power that is compatible with the main control unit.

2. The dimming film power supply and control device according to claim 1, characterized in that, The main body of the device also includes an input unit, which is electrically connected to the main control unit and is used to receive user input signals.

3. The dimming film power supply and control device according to claim 1, characterized in that, The circuit board is also equipped with a wireless communication unit, which is electrically connected to the main control unit and is used to receive wireless control signals to the dimming film.

4. The dimming film power supply and control device according to claim 1, characterized in that, The main body of the device also includes a display unit, which is electrically connected to the main control unit and is used to display the device status.

5. The dimming film power supply and control device according to claim 1, characterized in that, The surface of the main body of the device is also provided with a charging interface, through which an external power source charges the first battery; the circuit board also includes a first charging unit, which is connected between the charging interface and the first battery, and is used to control the charging of the first battery by the external power source.

6. The dimming film power supply and control device according to claim 1, characterized in that, The circuit board also includes a second charging unit connected between the photovoltaic panel and the second battery, used to control the photovoltaic panel to charge the second battery.

7. The dimming film power supply and control device according to claim 1, characterized in that, The voltage regulating inverter unit includes: The first voltage regulating subunit is connected to the standby switch and is used to adjust the output voltage of the first battery to a set DC voltage. An inverter subunit, connected to the first voltage regulating subunit and the power supply interface, is used to convert the DC power output by the first voltage regulating subunit into AC power. The second voltage regulation subunit is connected to the standby switch, the first voltage regulation subunit, and the inverter subunit. It is used to adjust the output voltage of the first battery to a set DC voltage to power the devices of the first voltage regulation subunit and the inverter subunit.

8. The dimming film power supply and control device according to claim 1, characterized in that, It also includes a support frame, which includes a base plate and a back plate. The base plate and the back plate are combined to form an L-shape. The base plate and the back plate are used to support the main body of the device, so that the photovoltaic panel is exposed outward. The back plate is provided with a power supply electrode at the position corresponding to the power supply interface. The power supply electrode is electrically connected to the electrode terminal of the dimming film. The power supply electrode can contact and connect with the power supply interface of the main body of the device.

9. The dimming film power supply and control device according to claim 8, characterized in that, The back plate is provided with a first magnetic attraction element, and the housing is provided with a second magnetic attraction element, and the first magnetic attraction element and the second magnetic attraction element are magnetically attracted to each other.

10. A dimming film system, comprising a dimming film and a dimming film power supply and control device according to any one of claims 1 to 9, wherein the dimming film is electrically connected to the dimming film power supply and control device through the power supply interface, and the dimming film power supply and control device provides power and drive control to the dimming film, eliminating the need for additional power supply lines.

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