Intelligent switch and power supply system

Abstract

The utility model provides a kind of intelligent switch and power supply system, it is related to intelligent switch technical field.The intelligent switch is configured with function module, it is characterized in that, the intelligent switch is connected with load, the intelligent switch includes control module, power supply circuit connected with the control module, the power supply circuit includes the first power supply module connected with the function module, wherein, the control module is used to detect the power mode of the intelligent switch;The first power supply module is used to power supply for the function module in the case where the power mode is first power mode and the working state of the load is first state;Solved the problem that screen cannot be stably displayed and is easy to cause luminaire ghost fire in off state in related art.

Description

Technical Field

[0001] This application relates to the field of intelligent switch technology, and more specifically, to an intelligent switch and power supply system. Background Technology

[0002] With the development of IoT technology, the types of smart switches are becoming more and more diverse. For example, according to the power supply method, smart switches can be divided into zero-live smart switches, single-live smart switches, and single-zero-live smart switches.

[0003] For single-live and single-neutral live smart switches, when the power is drawn from the live wire for internal power supply, the neutral wire is not connected. This means that even when the load connected to the smart switch is off, current will still flow from the live wire through the neutral wire into the load, causing abnormal phenomena in the load. Taking lighting fixtures as an example, for lower-wattage fixtures, even when the light is off, the fixture may still emit a faint glow or flicker, a phenomenon known as "ghosting."

[0004] Therefore, for smart switches equipped with display screens, when the load is off, on the one hand, if the power obtained by the smart switch from the live wire is small, it will not be able to support the display screen with enough power; on the other hand, if the power obtained by the smart switch from the live wire is high, although the display screen can be displayed, it will cause abnormal load phenomena. Utility Model Content

[0005] This utility model provides an intelligent switch that solves the problem in related technologies where the screen cannot display stably when the lights are off, and which easily causes ghosting lights. The technical solution is as follows:

[0006] According to one aspect of the present invention, a smart switch is configured with a functional module, characterized in that the smart switch is connected to a load, the smart switch includes a control module and a power supply circuit connected to the control module, the power supply circuit includes a first power supply module connected to the functional module, wherein the control module is used to detect the power-taking mode of the smart switch; the first power supply module is used to supply power to the functional module when the power-taking mode is a first power-taking mode and the working state of the load is a first state.

[0007] In one exemplary embodiment, the power supply circuit further includes a second power supply module connected to the functional module. The second power supply module is used to supply power to the functional module when the power extraction mode is the second power extraction mode; or, the second power supply module is used to supply power to the functional module when the power extraction mode is the first power extraction mode and the load is in a first operating state; or, the second power supply module is used to supply power to the functional module and / or charge the first power supply module connected thereto when the power extraction mode is the first power extraction mode and the load is in a second operating state.

[0008] In an exemplary embodiment, the power supply circuit further includes a selection module, wherein the first power supply module and the second power supply module are respectively connected to the functional module through the selection module, wherein the selection module is used to select the first power supply module and / or the second power supply module to supply power to the functional module under the control of the control module.

[0009] In one exemplary embodiment, the selection module includes a first switch connected between the second power supply module and the functional module, the first switch being used to turn on or off the power supply path between the second power supply module and the functional module.

[0010] In one exemplary embodiment, the selection module includes a second switch connected between the first power supply module and the functional module, the second switch being used to turn on or off the power supply path between the first power supply module and the functional module.

[0011] In one exemplary embodiment, the power supply circuit further includes a third switch connected between the second power supply module and the first power supply module, the third switch being used to turn on or off the charging path between the second power supply module and the first power supply module.

[0012] In an exemplary embodiment, the smart switch further includes a third power supply module, which is connected to the control module and the power supply circuit respectively. The third power supply module is used to obtain electrical energy according to the first power extraction method or the second power extraction method supported by the smart switch, and to supply power to the control module and / or the second power supply module in the power supply circuit based on the obtained electrical energy; wherein, the first power extraction method refers to the smart switch obtaining electrical energy through a live wire path without a neutral wire; the second power extraction method refers to the smart switch obtaining electrical energy through a neutral-live wire path with both a live wire and a neutral wire connected simultaneously.

[0013] In one exemplary embodiment, the first power supply module is configured as an energy storage module, and / or the second power supply module is configured as a constant current module, and / or the third power supply module is configured as an AC-DC power supply.

[0014] In one exemplary embodiment, the smart switch includes an electronic switch and / or a relay, the electronic switch and / or the relay forming a series path with the load, the series path being connected between the live wire and the neutral wire.

[0015] In one exemplary embodiment, the smart switch further includes a wireless communication module connected to the control module, for transmitting or receiving wireless signals to transmit data of the smart switch when a communication connection is established between the smart switch and an external device.

[0016] According to one aspect of the present invention, a power supply system includes a smart switch and a load connected thereto; the smart switch includes a control module and a power supply circuit connected to the control module, the power supply circuit including a first power supply module connected to the functional module, wherein the control module is used to detect the power-taking mode of the smart switch; the first power supply module is used to supply power to the functional module when the power-taking mode is a first power-taking mode and the working state of the load is a first state.

[0017] The beneficial effects of the technical solution provided by this utility model are:

[0018] In the above technical solution, when the first power supply mode and the load are in the first state, the power supply circuit is switched by the control module, and the strategy of using the first power supply module to supply power to the functional module is adopted. This can provide short-term power to maintain the operation of the functional module even when the smart switch cannot draw power from the live wire and the neutral wire to form a stable closed loop, thereby avoiding abnormal phenomena of the functional module and / or the load.

[0019] Taking a scenario where the primary power source is a single live wire, the load is a lamp, and the functional module is a display screen as an example, directly drawing power from the live wire when the lights are off may cause current to flow through the lamp's circuit, resulting in a dim or flickering "ghost light" phenomenon. By employing a strategy of using the primary power supply module to power the display screen, the problem of abnormal lamp illumination caused by power supply current leakage is effectively avoided. This not only ensures a stable display effect but also significantly improves the user experience and the stability of the smart switch under the single live wire power source method. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below.

[0021] Figure 1 This is a structural block diagram of a smart switch according to an exemplary embodiment;

[0022] Figure 2 This is a partial circuit diagram of a smart switch according to an exemplary embodiment;

[0023] Figure 3 This is a schematic diagram illustrating a single-wire power supply method according to an exemplary embodiment;

[0024] Figure 4 This is a schematic diagram illustrating a power supply method using live and neutral wires according to an exemplary embodiment; Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0027] The following is an introduction and explanation of several terms involved in this utility model:

[0028] Single-wire switch: refers to a switch that can operate by connecting only the live wire and the load wire.

[0029] Neutral-live wire switch: refers to a switch that requires the live wire, load wire and neutral wire to be connected simultaneously in order to work.

[0030] Single-wire / neutral-wire universal switch: refers to a switch that can operate when connected to only the live wire, or when connected to both the live and neutral wires simultaneously.

[0031] As mentioned earlier, smart switches are divided into single-live-wire switches, neutral-live-wire switches, and single-neutral-live-wire universal switches.

[0032] Single-wire switches or single-neutral-live universal switches in single-wire mode are widely used due to their advantages such as simple wiring and suitability for old house renovations. They only need to be connected to the live wire to realize the control function, without the need to connect an additional neutral wire.

[0033] Taking a single-wire switch as an example, in order for the internal functions of a single-wire switch to operate normally, the power module of the single-wire switch needs to draw power from the live wire to supply power to each functional module. However, since it is only connected to the live wire and not the neutral wire, the power module cannot directly draw power through the live wire and the neutral wire to form a circuit. The power path needs to go from the live wire to the power module, then through the load, and finally to the neutral wire. Therefore, when the single-wire switch is open and the load is in the off state, there is a problem that the power module's power draw is limited. The single-wire switch itself cannot obtain a stable power supply current, and it is also easy to cause abnormal phenomena in the load.

[0034] Taking lighting fixtures as an example, if a single-wire switch is disconnected and the light fixture is in the off state, attempting to draw power from the live wire to maintain the internal function of the single-wire switch may cause the supply current to flow through the circuit containing the light fixture, resulting in a dim or flickering "ghost light" phenomenon. This is especially true for single-wire switches with display screens, where obtaining power in the off state is more difficult, and the display screen may become unstable. Even slight mishaps can cause abnormal responses from the light fixture, thus affecting user experience and equipment stability.

[0035] As can be seen from the above, for single-wire switches equipped with a display screen, there is still a problem that the display screen cannot display stably when the lights are off and is prone to causing ghost lights.

[0036] Therefore, the intelligent switch provided by this utility model can effectively maintain the normal display function of the display screen when the load (such as a lamp) is in the off state, and effectively avoid abnormal light emission of the load caused by power supply.

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0038] In one exemplary embodiment, the smart switch is configured with functional modules, such as Figure 1 As shown, the smart switch is connected to the load. The smart switch includes a control module and a power supply circuit connected to the control module. The power supply circuit includes a first power supply module.

[0039] First, the load can be household appliances such as lighting fixtures and electric fans. The smart switch is used to control the on / off state of the load and to manage the power supply to the internally configured functional modules when the load is on / off. The functional modules can be functional modules such as display screens and digital tubes.

[0040] The control module is used to detect the power supply method of the smart switch and the working status of the load.

[0041] The control module is the core control unit of the smart switch. It can be an embedded microcontroller. It is used to collect the current power supply mode of the smart switch and detect the working status of the load connected to it (such as on or off state), and determine the power supply strategy based on the above status information.

[0042] The control module can also be used to control the on / off logic of the smart switch, as well as the switching of the power supply path, such as switching between battery power and live wire power.

[0043] The power supply circuit connected to the control module is a circuit module used to provide power to the internal functional modules of the smart switch (such as the display screen). The power supply circuit can be directly powered by the live wire or auxiliary powered by energy storage, thus adapting to different power supply conditions.

[0044] The first power supply module can refer to an energy storage unit set in the power supply circuit. The first power supply module can be used to supply power to the functional module when the control module detects that the power supply mode of the smart switch is the first power supply mode and the working state of the load is the first state.

[0045] In one possible implementation, the first power supply module is configured as an energy storage module, such as a rechargeable battery. The capacity of the rechargeable battery can be selected from small-sized, high-energy-density, and highly reliable components, such as rechargeable button batteries (e.g., lithium manganese button batteries) or thin lithium-ion batteries. Its capacity can be set according to the power consumption requirements of the internal load of the smart switch, and can be selected according to the power consumption and / or continuous working time requirements of the internal functional modules of the smart switch (such as display screens).

[0046] For example, this functional module can be a low-power PMOLED screen. The smart switch is equipped with 1 to 4 PMOLED screens to display status information, control menus, and other interface content. The average power consumption of each PMOLED screen is about 15 milliwatts. Taking the power consumption of two PMOLED screens as an example of 30 milliwatts, if the first power supply module is a rechargeable button battery with a capacity of about 144 milliwatt-hours, a fully charged rechargeable button battery has a capacity of 144 milliwatt-hours and can release about 90% of its capacity, that is, the actual usable power is about 129.6 mWh. Then, it can maintain the use of 2 screens for 4.32 hours; if 4 PMOLED screens are used, it can maintain the use of the screens for 2.16 hours.

[0047] Therefore, by properly configuring the battery capacity, multiple display screens can continue to operate for several hours under the first power supply mode and the first load working state, without having to draw power from the live wire, effectively alleviating the power supply limitation problem, ensuring the user interaction experience, and avoiding ghosting phenomenon through control strategies.

[0048] The power supply method of a smart switch can refer to the power supply method used to obtain electrical energy to drive functional modules and other components.

[0049] The first power supply method refers to the method where the smart switch is only connected to the live wire and not the neutral wire, i.e., the single live wire power supply method. Under the first power supply method, the power supply path of the smart switch is a closed circuit formed between the live wire, the smart switch, the load, and the neutral wire, and it is not possible to directly form a closed circuit between the live wire and the neutral wire.

[0050] The operating status of a load refers to the current on / off state of the circuit in which the load (such as a lamp or fan) is electrically connected to the smart switch.

[0051] The first state of the load can be the off state, that is, the smart switch is off and the load is not receiving power.

[0052] Furthermore, the operating status of the load can be determined by the control module of the smart switch by detecting the voltage and current feedback of the current circuit in which the load is located, and by controlling the logic register.

[0053] In this embodiment, when the power supply mode of the smart switch is the first power supply mode, that is, the switch is only connected to the live wire and not to the neutral wire (i.e., the first power supply mode is the single live wire power supply mode), and the connected load is in the first state, that is, the load is off (e.g., the light is not lit), the live wire cannot form a stable closed current loop with the smart switch through the load, and the current that the smart switch can obtain from the live wire is extremely limited.

[0054] Under the aforementioned conditions, if the smart switch directly draws power from the live wire to supply power to the functional module, it may cause the current to flow through the lamp, thereby causing the lamp to emit abnormal light (i.e., ghost light), which is especially noticeable in scenarios using low-power LED lamps.

[0055] Based on this, if the control module detects that the current power supply mode is the first power supply mode (such as single live wire power supply mode) and the load is in the first state (such as the off state), it will control the power supply circuit to switch to power supply from the first power supply module (such as a rechargeable battery) and stop directly drawing power from the live wire. This not only provides a stable operating current for the functional module, but also avoids the generation of interference current that could cause abnormal phenomena in the load.

[0056] Through the above process, the strategy of using the first power supply module to power the switch in the single live wire power supply mode and when the light fixture is off enables the functional module to maintain operation for a short time under the condition of no stable main power supply. This avoids directly drawing the live wire current, effectively preventing the ghosting phenomenon caused by the current passing through the light fixture, and greatly improving the adaptability of the smart switch in the old wiring scenario and the user experience.

[0057] In an exemplary embodiment, the power supply circuit of the smart switch further includes a second power supply module connected to the functional module. The second power supply module is used to supply power to the functional module when the power extraction mode is the second power extraction mode.

[0058] Alternatively, the second power supply module is used to supply power to the functional module when the power supply method is the first power supply method and the load is in the first working state;

[0059] Alternatively, the second power supply module is used to supply power to the functional module and / or charge the first power supply module connected thereto when the power supply method is the first power supply method and the load is in the second operating state.

[0060] The second power supply method refers to the smart switch being connected to both the live and neutral wires simultaneously, i.e., the live-neutral wire power supply method. In this method, the power supply circuit has a complete closed loop with both the live and neutral wires, allowing for a stable and larger current draw. Therefore, the second power supply module can directly power the functional modules without concern about interference from the current draw on the load. Under this second power supply method, the functional modules can operate continuously without current limiting, resulting in high system stability.

[0061] Regarding the second power supply module, it can be used to supply power to the functional module in a constant current manner and / or charge the first power supply module. The second power supply module can refer to a constant current module. Furthermore, the operating state of the load is the second state, which can refer to the load being in the on state.

[0062] Based on this, when the control module detects that the power draw method is the first power draw method and the load is in the second state, that is, the smart switch is in the single live wire power draw mode and the connected load is in the on state (second state), the live wire can form a temporary closed current path through the conducting load, thereby allowing the second power supply module to stably draw power from the live wire. In this state, the second power supply module can be used to power the functional modules. If the control module detects that the first power supply module is not fully charged, it can also charge it through the second power supply module. The constant current power supply ensures that the drawn current is maintained within a safe range, avoiding excessive current that could cause load flickering or unstable power supply.

[0063] Furthermore, the second power supply module supplies power to the functional module when the power extraction method is the first power extraction method and the load is in the first state. Taking the second power supply module as a constant current module, the first power extraction method as a single live wire power extraction method, and the first state of the load as the off state as an example, the constant current module draws power from the live wire to supply power to the functional module. Although the current drawn will still flow through the load at this time, because the constant current module uses a constant current power supply method, it can limit the magnitude of the current drawn, thereby avoiding excessive current flowing through the load and causing abnormal phenomena in the load.

[0064] In addition, when the power supply method is the first power supply method and the load is in the first state, the second power supply module can also supply power to the functional module together with the first power supply module, so as to avoid the power obtained by the second power supply module through the first power supply method being insufficient to support the normal operation of the functional module.

[0065] Through the above process, the power supply strategy of the smart switch under different power supply modes can be realized. When the power supply mode of the smart switch is the second power supply mode, a stable closed loop can be formed directly between the smart switch and the live wire and the neutral wire, and the live wire directly supplies power to the functional module without the need to start the first power supply module, thereby realizing the continuous and stable operation of the functional module. When the power supply mode of the smart switch is the first power supply mode and the load is in the second state, the second power supply module is started to stably draw power from the live wire in a constant current limiting manner. On the one hand, this ensures the normal power supply of the functional module, and on the other hand, it effectively suppresses the interference of current fluctuations on the load. Meanwhile, the control module can activate the charging path in a timely manner according to the power status of the first power supply module, and replenish the rechargeable battery through the constant current module to enhance the display endurance of the system in the power outage or load off state, thereby ensuring the reliability and continuity of the display function under adverse power supply conditions. In addition, when the power supply mode of the smart switch is the first power supply mode and the load is in the first state, the functional module is powered through the second power supply module. Since the output current of the second power supply module is controlled by constant current limiting, the current flowing through the load is limited to a safe range, thereby effectively avoiding abnormal phenomena of the load due to excessive power supply current.

[0066] In an exemplary embodiment, the power supply circuit of the smart switch further includes a selection module, and the first power supply module and the second power supply module are respectively connected to the functional module through the selection module.

[0067] The selection module, under the control of the control module, selects a first power supply module and / or a second power supply module to power the functional module. Specifically, the selection module may include multiple controllable electronic switches, which are controlled by the control module to switch the power input path of the functional module under different power supply scenarios.

[0068] For example, when the control module detects that the smart switch's power supply mode is the second power supply mode, the selection module selects the second power supply module to supply power to the functional module using a constant current limiting method. When the control module detects that the power supply mode is the first power supply mode (i.e., single live wire power supply mode) and the load is in the second state (i.e., on state), the selection module still selects the second power supply module as the power source, while the control module can determine whether to charge the first power supply module. When the control module detects that the power supply mode is the first power supply mode and the load is in the first state (i.e., off state), since the live wire cannot form a stable circuit, and to avoid excessive current draw when drawing power from the live wire... If the load malfunctions, the selection module can choose either the second power supply module or the first power supply module as the power source. The second power supply module supplies power to the functional module in a constant current limiting mode, or the first power supply module can directly supply power to the functional module without drawing power from the live wire. This can also prevent malfunctions in low-power loads even when the second power supply module is using a constant current limiting mode to supply power to the functional module. Alternatively, the selection module can simultaneously select both the second and first power supply modules as power sources to provide power to the functional module, preventing the second power supply module from obtaining insufficient power through the first power source method from being unable to support the normal operation of the functional module.

[0069] By setting the selection module, the power supply path can be automatically switched under different power supply modes, ensuring that the functional modules can obtain a suitable power source under various power supply conditions. This not only ensures the continuity of the display, but also improves the flexibility, safety and energy-saving effect of the overall system. At the same time, it avoids abnormal load phenomena caused by excessive current when drawing power from the live wire.

[0070] In an exemplary embodiment, the smart switch selection module includes a first switch connected between a second power supply module and a functional module. The first switch is used to turn on or off the power supply path between the second power supply module and the functional module.

[0071] Specifically, when the control module detects that the smart switch is currently in the second power supply mode (i.e., neutral and live wire power supply mode), or in the first power supply mode (i.e., single live wire power supply mode) and the load is in the second state (i.e., load on state), the control module sends a conduction command to the first switch to turn it on, so that the current output by the second power supply module can directly supply the functional module; if the control module detects that the smart switch is currently in the first power supply mode and the load is in the first state (i.e., off state), the control module can also send a conduction command to the first switch to turn it on, so that the current output by the second power supply module can directly supply the functional module. Although the second power supply module draws power from the live wire through the first power extraction method, it uses a constant current limiting method to supply power to the functional module. This limits the current flowing through the load and prevents excessive current from causing abnormal load phenomena. However, for some low-power loads, even with the current limit, the second power supply module may still cause abnormal phenomena when supplying power to the functional module in a constant current limiting manner. To prevent abnormal phenomena in low-power loads, the control module controls the first switch to open, cutting off the power supply path from the second power supply module to the functional module.

[0072] Figure 2 The diagram shows a partial circuit diagram of an intelligent switch as illustrated in an exemplary embodiment. Figure 2 As shown, taking the second power supply module as a constant current module and the first power supply module as a rechargeable battery as an example, the selection module includes three electronic switches. The first switch S1 is located between the constant current module and the functional module, and is used to turn on or off the power supply path between the constant current module and the functional module. When S1 is on, the functional module is powered by the constant current module; when S1 is off, the power supply path between the constant current module and the functional module is disconnected.

[0073] Therefore, under the second power supply method, the control module can control the first switch S1 to be turned on, the third switch S2 to be turned off, and the second switch S3 to be turned off, so that the functional module is directly powered by the constant current module. Alternatively, the control module can control S1 to be turned on, S2 to be turned on, and S3 to be turned off, so that the constant current module can power the functional module and charge the rechargeable battery.

[0074] In the first power extraction mode and the load is in the second state, the control module also controls S1 to be turned on, and the constant current module stably draws power to supply the functional modules. It can also control S2 to be turned on as needed to charge the rechargeable battery. In the first power extraction mode and the load is in the first state, the control module selects whether to keep S1 turned on according to the load type and current condition: if the load power is large, the constant current module can be allowed to supply power; if the load is a low-power device, the control module disconnects S1 and turns on S3, and the rechargeable battery supplies power only.

[0075] By setting a first switch and linking it with the control module, the second power supply module can be flexibly controlled to supply power to the functional module according to the real-time power supply method and load working status. This achieves stable power supply under suitable conditions, improves the intelligence and adaptability of the overall power supply strategy, and utilizes the constant current and current limiting characteristics of the second power supply module to limit the current flowing through the load even when using a single live wire power supply method. This avoids abnormal phenomena in the load, especially when the load is a lamp, significantly improving the problem of ghosting in lamps under the single live wire power supply method.

[0076] In an exemplary embodiment, the smart switch includes a selection module comprising a second switch connected between a first power supply module and a functional module, the second switch being used to turn on or off the power supply path between the first power supply module and the functional module.

[0077] Specifically, when the control module detects that the current power supply mode of the smart switch is the first power supply mode (i.e., single-wire power supply mode) and the working state of the load is the first state (i.e., load off state), for some low-power loads, when the second power supply module (constant current module) supplies power to the functional module in a constant current limiting mode, even after the current is limited, the low-power load may still experience abnormal phenomena. In order to avoid abnormal phenomena in the low-power load, the control module controls the first switch to open, cutting off the power supply path from the second power supply module (constant current module) to the functional module. The control module controls the second switch to turn on, so that the first power supply module (e.g., a rechargeable battery) supplies power to the functional module to maintain the short-term working capability of the functional module.

[0078] Alternatively, for some high-power loads, when the second power supply module (constant current module) supplies power to the functional module in a constant current limiting manner, and the power provided by the second power supply module (constant current module) is insufficient to enable the functional module to work normally, the control module simultaneously controls the first switch and the second switch to be turned on, so that the first power supply module (e.g., a rechargeable battery) and the second power supply module (constant current module) supply power to the functional module at the same time, so as to maintain the normal working capability of the functional module.

[0079] It should be noted that in the first power supply mode, when the load is in the second state (load on state), the live wire forms a temporary closed loop through the conducting load. Furthermore, in the second power supply mode, the smart switch simultaneously connects to both the live and neutral wires, directly forming a stable closed loop between them. In both cases, the constant current module can stably draw power from the live wire and directly power the functional module. In this case, there is no need for a first power supply module (e.g., a rechargeable battery) to power the functional module; the control module can control the second switch to open and the first switch to close. Because the constant current module has constant current limiting characteristics, its output current is controlled within a preset range, thus ensuring the normal operation of the functional module while avoiding interference to the load caused by current fluctuations. Especially when the load, such as a lamp, is an LED light, directly drawing power from the live wire can easily cause flickering due to unstable current. Drawing power through the constant current module effectively suppresses this interference.

[0080] In addition, when the control module detects that the smart switch has entered a low-power mode, or detects that the first power supply module is low on power, it controls the second switch to turn off, cutting off the power supply path from the first power supply module to the functional module, thus preventing unnecessary power consumption or battery over-discharge.

[0081] Using the previous example again, please refer to [link to previous text]. Figure 2 ,like Figure 2 As shown, the second switch S3 is located between the rechargeable battery and the functional module, and is used to control whether the rechargeable battery supplies power to the functional module. When the smart switch is in the first power-taking mode and the load is off, the control module turns on S3, and the rechargeable battery provides energy to the functional module to maintain its operation; if the rechargeable battery has insufficient power or does not need power, S3 turns off.

[0082] If the smart switch is in the first power supply mode and the load is in the open state, the control module controls S3 to disconnect and S1 to turn on, so that the constant current module can stably draw power to supply the functional module, and can control S2 to turn on as needed to charge the rechargeable battery.

[0083] If the smart switch is in the second power supply mode, the control module also controls S3 to be disconnected and S1 to be turned on, so that the constant current module directly supplies power to the functional module. It can also select whether to turn on S2 according to the rechargeable battery power, so as to charge the rechargeable battery while ensuring the continuous and stable operation of the functional module.

[0084] By setting a second switch, the power supply path of the first power supply module can be independently controlled. When the first power supply method cannot provide effective power, the first power supply module maintains the operation of the functional module. When the power of the first power supply module is insufficient or the power supply conditions are improved, the output path of the first power supply module is automatically cut off. This not only effectively prevents ghosting and over-discharge phenomena, but also improves the stability, safety and power management intelligence of the smart switch.

[0085] In an exemplary embodiment, the power supply circuit of the smart switch further includes a third switch connected between the second power supply module and the first power supply module, the third switch being used to turn on or off the charging path between the second power supply module and the first power supply module.

[0086] Specifically, when the control module detects that the current power supply mode of the smart switch is the second power supply mode (i.e., neutral-live wire power supply mode) or the first power supply mode (i.e., single live wire power supply mode) and the load is in the second state (i.e., load on state), the smart switch can stably obtain power from the neutral-live wire or single live wire through the second power supply module. At this time, the control module determines whether to enable the charging path based on the current power status of the first power supply module. If it detects that the first power supply module is not fully charged, it controls the third switch to be turned on, allowing the second power supply module to supply power to the first power supply module for charging. If it detects that the first power supply module is fully charged, or is in a state where charging is prohibited such as high temperature or low temperature, the control module disconnects the third switch to prevent overcharging or charging in abnormal state.

[0087] Using the previous example again, please refer to [link to previous text]. Figure 2 ,like Figure 2 As shown, the third switch S2 is located between the constant current module and the rechargeable battery, and is used to control whether the constant current module charges the battery. When the intelligent switch is detected to have good power supply and the rechargeable battery is not fully charged, the control module can turn on S2 to enable charging; if charging is not required, S2 will be turned off to prevent overcharging.

[0088] If the smart switch is in the first power-drawing mode and the load is in the on state, the control module controls S3 to be disconnected and S1 to be turned on, so that the constant current module stably draws power to supply the functional module, and can control S2 to be turned on as needed to charge the rechargeable battery; if the smart switch is in the first power-drawing mode and the load is in the off state, it controls S3 to be turned on and S2 to be disconnected, so that the rechargeable battery supplies power to the functional module.

[0089] If the smart switch is in the second power supply mode, the control module also controls S3 to be disconnected and S1 to be turned on, so that the constant current module directly supplies power to the functional module. It can also select whether to turn on S2 according to the rechargeable battery power, so as to charge the rechargeable battery while ensuring the continuous and stable operation of the functional module.

[0090] By setting a third switch, intelligent control of the charging path of the first power supply module is realized. When the intelligent switch has a stable power input, the charging process is arranged reasonably; when there is no need to charge or it is not suitable to charge, the third switch is disconnected in time to avoid safety hazards such as overcharging or abnormal charging of the first power supply module, and further enhance the power management capability and safety performance of the intelligent switch under multi-mode power supply.

[0091] In an exemplary embodiment, the smart switch further includes a third power supply module, which is connected to the control module and the power supply circuit respectively. The third power supply module is used to obtain electrical energy according to the first power extraction method or the second power extraction method supported by the smart switch, and to supply power to the control module and / or the second power supply module in the power supply circuit based on the obtained electrical energy.

[0092] The first power supply method refers to the method by which the smart switch obtains power through the live wire path that is not connected to the neutral wire; the second power supply method refers to the method by which the smart switch obtains power through the neutral-live wire path that is connected to both the live wire and the neutral wire.

[0093] Specifically, the third power supply module can obtain power according to the power extraction method supported by the current smart switch (including the first power extraction method or the second power extraction method). In the first power extraction method supported by the smart switch, one end of the third power supply module is connected to the live wire and the other end is connected to the load. The live wire, the third power supply module, the load, and the neutral wire form a closed loop. The third power supply module can obtain power through this closed loop. Alternatively, in the second power extraction method supported by the smart switch, one end of the third power supply module is connected to the live wire and the other end is connected to the neutral wire. The live wire, the third power supply module, and the neutral wire directly form a closed loop. The third power supply module can obtain power through this closed loop to power the control module and / or the second power supply module in the power supply circuit. This allows the control module to perform stable control based on the power obtained from the third power supply module. The second power supply module then uses the power obtained from the third power supply module to power the functional modules and / or charge the first power supply module.

[0094] Taking the third power supply module as an AC-DC conversion module as an example, the third power supply module has input adaptive capability and can obtain AC power under the above two power acquisition methods. The third power supply module can obtain AC power from the mains input terminal and convert it into DC power suitable for the low-voltage control circuit inside the smart switch based on the obtained AC power.

[0095] By setting up a third power supply module and enabling it to acquire and convert power in both single-wire and neutral-wire modes, the versatility and stability of smart switches in various wiring environments can be significantly improved.

[0096] In an exemplary embodiment of the smart switch, the first power supply module is configured as an energy storage module, and / or the second power supply module is configured as a constant current module, and / or the third power supply module is configured as an AC-DC power supply.

[0097] Specifically, the first power supply module is configured as an energy storage module, such as a rechargeable battery, to supply power to the functional modules when the power extraction method is the first power extraction method and the load is in the first operating state. The second power supply module is configured as a constant current module to supply power to sensitive loads such as functional modules in a constant current output manner, or to charge the first power supply module (such as the rechargeable battery). The third power supply module is configured as an AC-DC power supply to convert the AC voltage input by the live wire / neutral wire into a stable low-voltage DC voltage, which can be used to provide operating power to core control circuits such as control modules and wireless communication modules.

[0098] Figure 3 The diagram shows a single-wire power supply method, such as... Figure 3 As shown, taking the first power supply method as single live wire power supply, the load as a lamp, the first power supply module as a rechargeable battery, the second power supply module as a constant current module, and the third power supply module as an AC-DC power supply as an example, the smart switch adopts the single live wire connection method (i.e., the first power supply method), that is, only the mains live wire (L) is connected, and the mains neutral wire (N) is not directly connected. It is suitable for old wiring environments where there is no neutral wire connection condition. The internal structure of a smart switch includes an electronic switch and relay: used to control the connection and disconnection of the live wire and the load, determining the on / off state of the light fixture; an AC-DC power supply (i.e., the third power supply module): drawing power from the weak leakage current between the live wire and ground to provide a limited DC operating voltage for the control module and wireless module; a constant current module (i.e., the second power supply module): used to power the functional modules (such as the display screen) or charge the rechargeable battery when the light fixture is on; a power selection module (i.e., the selection module): switching to the battery power path when the live wire power supply is insufficient; a rechargeable battery (i.e., the first power supply module): used to power the functional modules when the light fixture is off, maintaining the normal operation of the functional modules; a control module: determining the power supply method and the operating state of the load, and controlling the power supply switching logic; a wireless module: used for communication and control with external devices; and functional modules, such as the display screen, which can be used to display the current operating status of the load and user interface information.

[0099] Now on Figure 3 The current path shown is explained as follows: If the light is on (electronic switch and relay closed and conducting): the live wire forms a closed circuit through the light and the neutral wire, and both the AC-DC module and the constant current module can draw power stably; if the light is off (electronic switch and / or relay open): the circuit formed by the live wire, load and neutral wire is interrupted, the constant current module cannot draw power stably to provide stable power to the functional module, and the control module will switch to the rechargeable battery power supply path to ensure the normal operation of the functional module.

[0100] It is understandable that if the power supply to the functional module is directly drawn from the live wire, for example, if the functional module is a display screen, and the power obtained by the smart switch from the live wire is small, it will not be able to support the display screen with sufficient power. If the power obtained by the smart switch from the live wire is high, although the display screen can display, when the AC-DC module draws power from the live wire, the current will also flow through the lamps, which may produce weak leakage light in low-power lamps (such as low-power LED lamps), i.e., "ghost light phenomenon". This implementation avoids this by switching the power supply strategy and using the first power supply module to provide auxiliary power to the functional module.

[0101] Figure 4 The diagram shows a power supply method using the live and neutral wires, as shown below. Figure 4 As shown, taking the second power supply method as the live and neutral wire power supply method, the load as a lamp, the first power supply module as a rechargeable battery, the second power supply module as a constant current module, and the third power supply module as an AC-DC power supply as an example, the smart switch adopts the live and neutral wire connection method, that is, it is connected to the mains live wire (L) and neutral wire (N) at the same time, which is suitable for new wiring scenarios. The smart switch can stably obtain power internally.

[0102] Intelligent switch structure and Figure 3 Basically the same, compared with the first power source method, Figure 4 The AC-DC module shown, which draws power from the live and neutral wires, can directly form an AC closed loop between the live and neutral wires, providing stable power to the control module and the constant current module. The control module controls the relays and electronic switches according to the load's operating state and selects whether to enable the rechargeable battery. The constant current module can directly power the functional modules or charge the rechargeable battery under any load operating state. The rechargeable battery serves only as a backup power source, providing power outage protection or auxiliary power in special scenarios. Therefore, even when the light fixture is off, the AC-DC module can directly draw power from the live and neutral wires to power the constant current module, which in turn ensures the continuous operation of the functional modules. This eliminates the need for frequent reliance on the battery, and the current drawn from the module will not flow through the light fixture, preventing the light fixture from triggering a ghosting phenomenon.

[0103] in, Figure 3 and Figure 4 The blue path in the diagram is used to distinguish the control module controlling the constant current module in this embodiment.

[0104] Through the above process, the smart switch can intelligently identify the current power supply mode according to the actual wiring method and dynamically switch the power supply path according to the working status of the load. In the second power supply mode, it is stably powered by AC-DC power supply. In the first power supply mode and the load is off, it automatically switches to the first power supply module. This not only ensures the continuous operation of the functional modules, but also effectively avoids ghosting phenomenon and improves the adaptability of the system and user experience.

[0105] In an exemplary embodiment, the smart switch includes an electronic switch and / or a relay, wherein the electronic switch and / or the relay form a series path with the load, the series path being connected between the live wire and the neutral wire.

[0106] Specifically, electronic switches and relays can be used to create a load path between the live wire and the neutral wire to control the power supply status of the load.

[0107] In one possible implementation, the smart switch consists only of an electronic switch connected in series with the load, forming a series path. The electronic switch is driven by a control module to quickly turn on or off the current path between the live wire and the load, thus controlling the load's on / off state. This structure offers advantages such as fast response and suitability for low-power applications.

[0108] In one possible implementation, the smart switch consists only of a relay, which is connected in series with the load to form a series path. The relay is controlled by a control module to establish or disconnect a mechanical electrical connection between the live wire and the load. Because relays have the ability to carry large currents and provide electrical isolation, they are more suitable for high-power load scenarios.

[0109] In another exemplary embodiment, the smart switch includes both an electronic switch and a relay, with the electronic switch, relay, and load connected in series to form a series path. Specifically, one end of the electronic switch is connected to the live wire, and the other end is connected to one end of the relay. The other end of the relay is connected to the load input terminal, and the load output terminal is connected to the neutral wire. The electronic switch can be a transistor, used to respond to fast control signals from the control module to achieve rapid adjustment of current conduction; the relay acts as the main power switching device, responsible for the load circuit's on / off state. This combination of electronic switch and relay not only balances fast response and high current carrying capacity but also improves the system's adaptability and stability in different application environments.

[0110] Using the previous example again, please refer to [link to previous text]. Figure 3 or Figure 4 The electronic switch can be a transistor. One end of the electronic switch is connected to the live wire (L) of the mains to control the conduction of the live wire current. The other end of the electronic switch is connected to one end of the relay. The control terminal of the electronic switch is connected to the control module. The other end of the relay is connected to the input terminal of the lamp. The output terminal of the lamp is connected to the neutral wire (N) of the mains.

[0111] In the above structure, the relay is used to control the on and off of the lamp, the electronic switch can be a transistor, which can respond to the fast control signal of the control module and realize the rapid adjustment of the current conduction state; while the relay serves as the main power switching device, used to carry a large load current and provide mechanical disconnection protection and electrical isolation.

[0112] The control module controls the electronic switch to turn on and / or drives the relay to engage when power is needed for the load. This allows the live wire current to flow sequentially through the electronic switch and / or relay, eventually flowing into the load and forming a closed loop through the neutral wire, thus achieving normal power supply. When power is not needed, the electronic switch is turned off and / or the relay is disconnected, cutting off the current path and de-energizing the load.

[0113] By using electronic switches and / or relays, it is possible to balance fast response capability with high current carrying capacity, thereby improving control accuracy and response speed, as well as enhancing the stability and anti-interference capability of intelligent switches.

[0114] In an exemplary embodiment, the smart switch further includes a wireless communication module connected to the control module for transmitting or receiving wireless signals to transmit data of the smart switch when a communication connection is established between the smart switch and an external device.

[0115] Specifically, the wireless communication module can support one or more wireless communication protocols, such as Wi-Fi, Bluetooth, Zigbee, NB-IoT, or LoRa, to wirelessly transmit and receive status information, control commands, or configuration information of the smart switch.

[0116] The wireless communication module can be driven and managed by the control module in the smart switch. After the smart switch is running, it can automatically search for or connect to preset target devices (such as mobile APP, home gateway or cloud platform).

[0117] By setting up a wireless communication module, the intelligence level of smart switches can be further improved, enabling remote monitoring and cloud management, and meeting the needs of modern smart home systems for low power consumption, high stability, and convenient communication.

[0118] In an exemplary embodiment, a power supply system includes a smart switch and a load connected thereto; the smart switch includes a control module and a power supply circuit connected to the control module, the power supply circuit including a first power supply module connected to a display function module, wherein the control module is used to detect the power-taking mode of the smart switch; the first power supply module is used to supply power to the function module when the power-taking mode is a first power-taking mode and the working state of the load is a first state.

[0119] This smart switch can solve the problems of insufficient power supply to the functional modules of the smart switch in single-wire power supply scenarios and the phenomenon of ghosting lights in lighting loads.

[0120] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0121] The above description is only a partial embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An intelligent switch, configured with functional modules, characterized in that, The smart switch is connected to a load. The smart switch includes a control module and a power supply circuit connected to the control module. The power supply circuit includes a first power supply module connected to the functional module. The control module is used to detect the power supply mode of the smart switch; The first power supply module is used to supply power to the functional module when the power supply mode is the first power supply mode and the working state of the load is the first state.

2. The switch as described in claim 1, characterized in that, The power supply circuit further includes a second power supply module connected to the functional module. The second power supply module is used to supply power to the functional module when the power extraction mode is the second power extraction mode. Alternatively, the second power supply module is used to supply power to the functional module when the power supply method is the first power supply method and the working state of the load is the first state; Alternatively, the second power supply module is used to supply power to the functional module and / or charge the first power supply module connected thereto when the power supply method is the first power supply method and the working state of the load is the second state.

3. The switch as described in claim 2, characterized in that, The power supply circuit further includes a selection module, wherein the first power supply module and the second power supply module are respectively connected to the functional module through the selection module. The selection module is used, under the control of the control module, to select the first power supply module and / or the second power supply module to supply power to the functional module.

4. The switch as described in claim 3, characterized in that, The selection module includes a first switch connected between the second power supply module and the functional module. The first switch is used to turn on or off the power supply path between the second power supply module and the functional module.

5. The switch as described in claim 3, characterized in that, The selection module includes a second switch connected between the first power supply module and the functional module. The second switch is used to turn on or off the power supply path between the first power supply module and the functional module.

6. The switch as described in claim 2, characterized in that, The power supply circuit also includes a third switch connected between the second power supply module and the first power supply module, the third switch being used to turn on or off the charging path between the second power supply module and the first power supply module.

7. The switch as claimed in any one of claims 1 to 6, characterized in that, The smart switch further includes a third power supply module, which is connected to the control module and the power supply circuit respectively. The third power supply module is used to obtain power according to the first power extraction method or the second power extraction method supported by the smart switch, and to supply power to the control module and / or the second power supply module in the power supply circuit based on the obtained power. The first power supply method refers to the method by which the smart switch obtains power through a live wire path that is not connected to the neutral wire; the second power supply method refers to the method by which the smart switch obtains power through a neutral-live wire path that is simultaneously connected to both the live wire and the neutral wire.

8. The switch as described in claim 7, characterized in that, The first power supply module is configured as an energy storage module, and / or the second power supply module is configured as a constant current module, and / or the third power supply module is configured as an AC-DC power supply.

9. The switch as claimed in any one of claims 1 to 6, characterized in that, The smart switch includes an electronic switch and / or a relay, wherein the electronic switch and / or the relay form a series path with the load, and the series path is connected between the live wire and the neutral wire.

10. The switch according to any one of claims 1 to 6, characterized in that, The smart switch also includes a wireless communication module connected to the control module, used to transmit or receive wireless signals to transmit data of the smart switch when a communication connection is established between the smart switch and an external device.

11. A power supply system, characterized in that, The system includes a smart switch and a load connected thereto; the smart switch is configured with a functional module; the smart switch includes a control module and a power supply circuit connected to the control module, the power supply circuit including a first power supply module connected to the functional module, wherein the control module is used to detect the power-taking mode of the smart switch; the first power supply module is used to supply power to the functional module when the power-taking mode is a first power-taking mode and the working state of the load is a first state.

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